JP6795438B2 - Gas treatment equipment, gas treatment methods, and programs - Google Patents

Description

The present invention relates to gas treatment equipment, gas treatment methods, and programs.

The gas used by the customer is supplied to each customer via a gas pipe and a gas meter. In addition, the gas meter is required to be replaced at regular intervals by the Measurement Law. When the gas meter is replaced, air remains in the new gas meter that was replaced. Therefore, after the replacement of the gas meter, the work of purging the air remaining in the gas meter is performed (see, for example, Patent Document 1 and Patent Document 2). In the following, for convenience of explanation, the air remaining in the new gas meter will be referred to as "residual air". Further, in the following, for convenience of explanation, the operation of purging the residual air is referred to as "purging operation".

Conventionally, when performing purging work, the gas test port of the gas outlet of the gas meter is opened, gas is supplied to the gas meter from the gas inlet, and residual air is dissipated into the atmosphere through the gas test port, for example. As described in Patent Document 3, an ignition test was conducted in the field. Further, in recent years, a gas recovery container is connected to a gas test port via a conduit, and the purged residual air and the gas released during the purging operation are recovered in the gas recovery container (for example). , Patent Document 4). Further, a method of replacing the residual air in the gas meter with gas in advance is also known (see, for example, Patent Document 5).

Japanese Unexamined Patent Publication No. 2003-166867 Japanese Patent No. 5295159 Japanese Patent No. 3778388 Japanese Patent No. 3589192 Japanese Unexamined Patent Publication No. 2006-53071

However, in the conventional purging operation, for example, when performing a combustion process, it is necessary to enter indoors such as a consumer's home, which limits the work. In addition, when performing an ignition test using the test port of the gas outlet of a gas meter, it is not necessary to enter indoors such as the customer's home, but the ignition test is prohibited from the viewpoint of fire prevention in underground malls and closed spaces. There are times. In addition, when recovering gas, a gas recovery container is prepared, and after the gas is recovered, the gas recovery container is brought back. Therefore, the gas recovery container is not damaged or a gas leak does not occur during transportation of the gas recovery container. As such, workers are required to have sufficient experience and attention. Further, even when the gas is released into the atmosphere during the purging operation, the operator is required to have sufficient experience and caution so as not to cause a ignition accident or an oxygen deficiency accident.

An object of the present invention is to provide a gas treatment device, a gas treatment method, and a program that can contribute to the safe treatment of gas discharged from a gas meter in connection with a purging operation on the gas meter.

In order to achieve the above object, the gas treatment apparatus according to claim 1 is a container having an intake port for taking in flammable gas and a discharge port for dissipating the gas, and the gas meter and the gas meter are said to be described. The container that takes in the gas separated from the main flow path, which is at least one of the gas outlets from which the gas is released, and the gas taken into the container from the intake port are diluted. The processing according to the detection result by the supply means for supplying the nonflammable diluting gas to the container so as to be dissipated from the emission port and the detection means for detecting the concentration of the gas emitted from the emission port is performed. seen including an execution unit, the executing, the process is feed process for feeding to said supply means, said diluting gas at a feed rate which is determined in accordance with the detected density by the detection means to the container It is a process including .

In order to achieve the above object, in the gas treatment method according to claim 4 , a gas meter in which the purging of residual air is not completed has a gas inlet that allows flammable gas to flow into the gas meter, and the gas is discharged from the gas meter. A main flow path in which a container having an intake port for taking in the gas and a release port for dissipating the gas is at least one of the gas meter and the gas discharge pipe when attached to the gas discharge pipe. The gas separated from the gas is taken in from the intake port, and the supply means is dissipated from the emission port so as to dilute the gas taken into the container from the intake port and dissipate the gas from the emission port. This includes supplying the container with a non-flammable diluting gas to the supply means at a supply amount determined according to the concentration of the gas .

In order to achieve the above object, the program according to claim 8 is a program for causing a computer to function as the execution unit included in the gas processing apparatus according to any one of claims 1 to 3. Is.

According to the present invention, it is possible to contribute to the safe treatment of the gas discharged from the gas meter due to the purging operation on the gas meter.

The first and second reference example, a front view showing an example of a configuration of a gas meter gas processing apparatus is applied according to the first to the second embodiment. The first and second reference example, is a side view showing an example of a gas meter of a configuration gas processing apparatus is applied according to the first to the second embodiment. It is a schematic block diagram which shows an example of the structure of the gas processing apparatus which concerns on 1st reference example . It is a block diagram which shows an example of the structure of the electric system of the gas processing apparatus which concerns on 1st reference example . It is a flowchart which is an example of the flow of gas processing which concerns on 1st reference example . It is a schematic block diagram which shows an example of the structure of the gas processing apparatus which concerns on 1st Embodiment . It is a block diagram which shows an example of the structure of the electric system of the gas processing apparatus which concerns on 1st Embodiment . A flowchart of an example of the flow of gas processing according to the first embodiment, is a continuation of the flowchart shown in FIG. It is a schematic block diagram which shows an example of the structure of the gas processing apparatus which concerns on 2nd Embodiment . It is a block diagram which shows an example of the structure of the electric system of the gas processing apparatus which concerns on 2nd Embodiment . An example of the flow of gas treatment according to the second embodiment is a flowchart, which is a continuation of the flowchart shown in FIG. It is a schematic block diagram which shows an example of the structure of the gas processing apparatus which concerns on 2nd reference example . It is a block diagram which shows an example of the structure of the electric system of the gas processing apparatus which concerns on 2nd reference example . An example of the flow of gas treatment according to the second reference example is a flowchart, which is a continuation of the flowchart shown in FIG. It is a schematic block diagram which shows an example of the structure of the bag body applied to the gas processing apparatus and the gas meter which concerns on 1st | It is a conceptual diagram which shows an example of the mode in which the gas treatment program is installed in the gas treatment apparatus from the storage medium which stored the gas treatment program which concerns on 1st and 2nd reference example, 1st and 2nd Embodiment .

Hereinafter, examples of embodiments for carrying out the present invention will be described in detail with reference to the drawings. In the following description, for convenience of explanation, the flammable gas is simply referred to as "gas". Further, in the following description, the gas refers to a city gas containing methane as a main component, but the present invention is not limited to this, and may be another flammable gas such as LP gas. .. Further, in the following, for convenience of explanation, the gas concentration will be described on the premise that it is expressed as a percentage concentration.

[ First reference example ]
As an example, as shown in FIGS. 1 and 2, the gas meter 10 is used by being attached to the gas inlet pipe 12 and the gas outlet pipe 14. The gas inlet pipe 12 is a pipe that allows gas to flow into the gas meter 10, and the gas outlet pipe 14 is a pipe that discharges gas from the gas meter 10. The gas outlet pipe 14 is an example of the main flow path according to the present invention.

The gas inlet pipe 12 and the gas outlet pipe 14 are connected to the gas meter 10 via the union nut 12A and the union nut 14A, respectively. Further, the gas inlet pipe 12 is provided with a meter cock 16, and the gas outlet pipe 14 is provided with cheese 18. Further, the cheese 18 is provided with a diversion port 18A. The diversion port 18A is provided with a lid (not shown), and when the gas flows through the gas outlet pipe 14 with the lid removed, the gas is discharged to the outside of the gas outlet pipe 14 through the diversion port 18A. To.

As an example, as shown in FIG. 3, the gas treatment device 20 is attached to the gas meter 10 and used to perform gas treatment. The gas treatment refers to the treatment of the gas released from the gas outlet 14 through the diversion port 18A. The gas treatment performed by the gas treatment apparatus 20 includes a dilution and emission treatment. The dilution and emission treatment refers to a treatment in which the gas is diluted with air so that the concentration of the gas is less than the lower limit of the flammable region, and the gas diluted with air is released.

The gas treatment device 20 includes a container 22, a hose 24, a deodorizer 30, a blower 34, and a control device 38.

The container 22 is a bottomed cylindrical container having thermal conductivity. An opening 22A, which is an example of the emission port according to the present invention, is formed on the upper surface of the container 22, and the entire upper surface of the container 22 is opened by the opening 22A.

An intake port 22B is formed in the container 22. The intake port 22B is an opening for taking in gas, and is arranged between the opening 22A and the bottom surface 22C of the container 22 in the height direction of the container 22.

One end of the hose 24, which is an example of the diversion channel according to the present invention, is connected to the diversion port 18A, and the other end of the hose 24 is connected to the intake port 22B. When gas flows through the gas outlet pipe 14 while the diversion port 18A and the intake port 22B are connected by the hose 24, the gas is discharged from the gas outlet pipe 14 to the hose 24 via the diversion port 18A, and the hose 24 The gas released into the container 22 is taken into the container 22 through the intake port 22B.

A deodorizer 30 is interposed in the middle of the hose 24, and the deodorizer 30 deodorizes the gas by removing the sulfur component contained in the gas flowing in the hose 24.

A blower 34 is provided on the bottom surface 22C of the container 22, and the blower 34 sends air from the bottom surface 22C side toward the opening 22A side in the container 22.

The control device 38 controls the entire gas processing device 20. As an example, as shown in FIG. 4, the control device 38 includes a main control unit 40. The main control unit 40 includes a CPU (Central Processing Unit: Central Processing Unit) 42, a primary storage unit 44, and a secondary storage unit 46.

The primary storage unit 44 is a volatile memory used as a work area or the like when executing various programs. An example of the primary storage unit 44 is a RAM (Random Access Memory). The secondary storage unit 46 is a non-volatile memory in which various programs such as the gas processing program 48 and various parameters are stored in advance. Examples of the secondary storage unit 46 include EEPROM (Electrically Erasable Programmable Read Only Memory), SSD (Solid State Drive), flash memory, and the like.

The CPU 42, the primary storage unit 44, and the secondary storage unit 46 are connected to each other via the bus line 50. The CPU 42 reads the gas processing program 48 from the secondary storage unit 46, expands it into the primary storage unit 44, and executes the gas processing program 48 expanded in the primary storage unit 44.

The control device 38 includes a reception I / F 52, a reception device 54, a display control unit 56, and a display 58. In this first reference example , "I / F" refers to an abbreviation for an interface.

The reception device 54 receives an instruction from the user. Examples of the reception device 54 include a keyboard, a mouse, a touch panel, and the like.

The reception I / F 52 is connected to the bus line 50 and the reception device 54, and outputs an instruction content signal indicating the content of the instruction received by the reception device 54 to the CPU 42 via the bus line 50. The CPU 42 executes processing according to the input instruction content signal.

The display 58 displays various information. Examples of the display 58 include a liquid crystal display, an organic electroluminescence display, and the like.

The display control unit 56 is connected to the bus line 50 and the display 58, and controls the display 58 according to an instruction from the CPU 42.

The control device 38 includes an external I / F60. The external I / F 60 is connected to the bus line 50 and various input / output devices, and controls the transmission and reception of various information between the CPU 42 and various input / output devices. In this first reference example , the blower 34 is adopted as an example of various input / output devices. Therefore, the CPU 42 can control the blower 34.

Next, the operation of the portion of the gas treatment apparatus 20 according to the present invention will be described.

First, the worker closes the meter cock 16 and connects the gas meter 10 in which the purging of the residual air is not completed to the gas inlet pipe 12 and the gas outlet pipe 14 by using the union nuts 12A and 14A. Next, the worker opens the diversion port 18A, connects one end of the hose 24 to the diversion port 18A via the diversion port side connector (not shown), and connects the other end of the hose 24 to the intake port side connector. It is connected to the intake port 22B via (not shown). As a result, the diversion port 18A and the intake port 22B are connected by the hose 24.

The worker opens the meter cock 16 with the diversion port 18A and the intake port 22B connected by the hose 24, and instructs the gas processing device 20 to start executing the gas processing. I do. The gas processing execution start instruction is received by the reception device 54.

In this way, when the meter cock 16 is opened with the diversion port 18A and the intake port 22B connected by the hose 24 and the reception device 54 receives the gas processing execution start instruction, the CPU 42 receives the gas processing program 48. According to, gas treatment is carried out.

Next, an example of the flow of gas processing executed by the CPU 42 will be described with reference to FIG.

In the gas treatment shown in FIG. 5, in step 100, the CPU 42 causes the blower 34 to start blowing air into the container 22 with a predetermined amount of air, and then shifts to step 102.

Here, the predetermined air flow amount refers to, for example, an air flow amount capable of reducing the concentration of a standard amount of gas to less than the lower limit of the flammable region within a predetermined time (for example, 60 seconds).

The standard amount is, for example, the average amount of gas taken into the container 22 during the purging operation, and is taken into the container 22 during the purging operation based on the results of a test using an actual machine or a computer simulation. Refers to the amount obtained in advance as the average amount of gas. In addition, the predetermined amount of air is also obtained in advance as an amount of air that can reduce the concentration of the standard amount of gas to less than the lower limit of the flammable range within a predetermined time based on the results of tests and computer simulations conducted. It is the amount of air blown. Further, the lower limit of the flammable region refers to, for example, 5%.

In step 102, the CPU 42 determines whether or not the blower end condition, which is the condition for ending the blower by the blower 34, is satisfied.

As an example of the ventilation end condition, there is a condition that a predetermined time has elapsed since the execution of the process of step 100 is completed. The "default time" referred to here refers to a predetermined time from the time when the execution of the process of step 100 is completed. As an example of the "predetermined time", when the air blown by the blower 34 is continued at the current air flow amount, the concentration of the gas emitted from the opening 22A of the container 22 becomes less than the lower limit of the combustible range in advance. There is a set time. Further, the "default time" referred to here is, for example, a predetermined time based on the results of a test using an actual machine or a computer simulation.

If the ventilation end condition is satisfied in step 102, the determination is affirmed and the process proceeds to step 104. If the ventilation end condition is not satisfied in step 102, the determination is denied and the process proceeds to step 106.

In step 104, the CPU 42 ends blowing air to the blower 34, and then proceeds to step 106.

In step 106, the CPU 42 starts displaying the dilution completion information indicating that the dilution emission process is completed on the display 58, and then proceeds to step 108. By displaying the dilution completion information on the display 58, the worker or the like is notified that the dilution emission process is completed. In this step 106, the purge completion information indicating that the purging of the residual air of the gas meter 10 has been completed may also be displayed in a display area different from the display area of the dilution completion information on the same screen.

At step 108, the CPU 42 determines whether or not the display end condition, which is the condition for ending the display of the dilution completion information, is satisfied. As an example of the display end condition, there is a condition that the reception device 54 has received an instruction to end the display of the dilution completion information. As another example of the display end condition, there is a condition that a predetermined time (for example, 15 seconds) has elapsed as a time for ending the display after the execution of the process of step 106 is completed.

If the display end condition is not satisfied in step 108, the determination in step 108 is performed again. If the display end condition is satisfied in step 108, the process proceeds to step 110.

In step 110, the CPU 42 ends the display of the dilution completion information on the display 58, and then ends the gas processing.

As described above, in the gas treatment device 20, the blower 34 blows the gas taken into the container 22 so as to dilute it and dissipate it from the opening 22A. Therefore, according to the gas treatment device 20, it is possible to contribute to the safe treatment of the gas discharged from the gas meter 10 during the purging operation.

Further, in the gas treatment device 20, the gas is diluted with air by blowing air from the blower 34. Therefore, according to the gas treatment device 20, the gas taken into the container 22 can be diluted with a simple structure as compared with the case where the gas is diluted without using the blower 34 and without using air. ..

[ First Embodiment ]
In the above first reference example , the case where the dilution and emission treatment is completed without detecting the gas concentration has been described, but in the first embodiment , the dilution and emission treatment and the like are executed according to the result of detecting the gas. This case will be described. In the first embodiment , the same components as those in the first reference example are designated by the same reference numerals, and the description thereof will be omitted.

As an example, as shown in FIG. 6, the gas processing apparatus 200 according to the first embodiment has an upstream concentration sensor 32 and a downstream concentration sensor 36 as compared with the gas processing apparatus 20 according to the first reference example. Is different. Further, the gas treatment device 200 is different from the gas treatment device 20 in that it has a control device 202 instead of the control device 38.

An upstream concentration sensor 32 is interposed in the middle of the hose 24. The upstream concentration sensor 32 is arranged on the upstream side of the deodorizer 30 in the gas flow path in the hose 24, and detects the concentration of the gas flowing in the hose 24.

The container 22 is provided with a downstream concentration sensor 36, which is an example of the detection means according to the present invention. The downstream concentration sensor 36 is arranged between the intake port 22B and the opening 22A in the container 22 to detect the gas concentration.

As an example, as shown in FIG. 7, the control device 202 is different from the control device 38 in that it has a main control unit 204 instead of the main control unit 40.

The main control unit 204 is different from the main control unit 40 in that the secondary storage unit 46 stores the gas treatment program 206 instead of the gas treatment program 48. The CPU 42 reads the gas processing program 206 from the secondary storage unit 46, expands it into the primary storage unit 44, and executes the gas processing program 206 expanded in the primary storage unit 44 to operate as the execution unit according to the present invention.

As an example, as shown in FIG. 7, the gas treatment device 200 is different from the gas treatment device 20 in that the upstream concentration sensor 32 and the downstream concentration sensor 36 are connected to the external I / F 60. Therefore, the CPU 42 can acquire the upstream gas concentration, which is the concentration detected by the upstream concentration sensor 32, and the downstream gas concentration, which is the concentration detected by the downstream concentration sensor 36, respectively. ..

Next, regarding the operation of the portion of the gas treatment apparatus 200 according to the present invention, a portion different from the first reference example will be described.

When the meter cock 16 is opened with the diversion port 18A and the intake port 22B connected by the hose 24 and the reception device 54 receives the gas processing execution start instruction, the CPU 42 performs the main function according to the gas processing program 206 . 1 Perform the gas treatment according to the embodiment .

Next, an example of the gas processing flow according to the first embodiment executed by the CPU 42 will be described with reference to FIG.

In the gas treatment shown in FIG. 8, in step 250, the blower 34 is started to blow air into the container 22 with a predetermined amount of air, and then the process proceeds to step 252.

In step 252, the CPU 42 acquires the upstream gas concentration from the upstream concentration sensor 32, and then proceeds to step 254.

In step 254, the CPU 42 determines whether or not the upstream gas concentration acquired in step 252 is equal to or higher than the first predetermined concentration. The first predetermined concentration means, for example, 99%. In step 254, if the upstream gas concentration acquired in step 252 is less than the first predetermined concentration, the determination is denied and the process proceeds to step 260. In step 254, if the upstream gas concentration acquired in step 252 is equal to or higher than the first predetermined concentration, the determination is affirmed and the process proceeds to step 256.

In step 256, the CPU 42 adds 1 to the count value of the first counter (not shown), and then proceeds to step 258. In the first embodiment, "0" is adopted as an example of the initial value of the count value of the first counter, but the present invention is not limited to this, and a value other than "0" may be adopted.

In step 258, the CPU 42 determines whether or not the count value of the first counter has reached the first default value (for example, 30). If the count value of the first counter does not reach the first default value in step 258, the determination is denied and the process proceeds to step 252. When the count value of the first counter reaches the first default value in step 258, the determination is affirmed and the process proceeds to step 266.

In step 260, the CPU 42 resets the count value of the first counter to “0”, and then proceeds to step 262.

In step 262, the CPU 42 determines whether or not the termination condition, which is the condition for terminating the gas processing, is satisfied. As an example of the end condition, there is a condition that the reception device 54 has received the gas treatment execution end instruction, which is an instruction to end the execution of the gas treatment.

If the end condition is not satisfied in step 262, the determination is denied and the process proceeds to step 252. If the end condition is satisfied in step 262, the determination is affirmed and the process proceeds to step 264.

In step 264, the CPU 42 ends the blowing of the blower 34, and then ends the gas processing.

In step 266, the CPU 42 causes the display 58 to start displaying the purge completion information indicating that the purging of the residual air of the gas meter 10 is completed, and then proceeds to step 268. By displaying the purging completion information on the display 58, the worker or the like is notified that the purging of the residual air of the gas meter 10 is completed.

In step 268, the CPU 42 acquires the downstream gas concentration from the downstream concentration sensor 36, and then proceeds to step 270.

In step 270, the CPU 42 determines whether or not the downstream gas concentration acquired in step 126 is less than the second predetermined concentration. The second predetermined concentration refers to, for example, the lower limit of the flammable range of the gas concentration.

In step 270, if the downstream gas concentration acquired in step 268 is less than the second predetermined concentration, the determination is affirmed and the process proceeds to step 272. In step 270, if the downstream gas concentration acquired in step 268 is equal to or higher than the second predetermined concentration, the determination is denied and the process proceeds to step 276.

In step 272, the CPU 42 adds 1 to the count value of the second counter (not shown), and then proceeds to step 274. In the first embodiment, "0" is adopted as an example of the initial value of the count value of the second counter, but the present invention is not limited to this, and a value other than "0" may be adopted.

In step 274, the CPU 42 determines whether or not the count value of the second counter has reached the second default value (for example, 30). If the count value of the second counter does not reach the second default value in step 274, the determination is denied and the process proceeds to step 268. When the count value of the second counter reaches the second default value in step 274, the determination is affirmed and the process proceeds to step 282.

In step 282, the CPU 42 starts displaying the dilution completion information indicating that the dilution emission process is completed on the display 58, and then proceeds to step 284. By displaying the dilution completion information on the display 58, the worker or the like is notified that the dilution emission process is completed. The process of this step 282 is an example of the notification process according to the present invention.

In the first embodiment , by executing the process of step 282, the gas processing completion information is displayed in a display area different from the display area of the purge completion information on the same screen while the display state of the purge completion information is maintained. Is displayed, but the present invention is not limited to this. For example, the CPU 42 may end the display of the purge completion information on the display 58 and start displaying the gas processing completion information.

In step 284, the CPU 42 ends the blower to the blower 34, and then proceeds to step 288.

In step 276, the CPU 42 resets the count value of the second counter to “0”, and then proceeds to step 278.

In step 278, the CPU 42 determines whether or not the termination condition is satisfied. If the end condition is not satisfied in step 278, the determination is denied and the process proceeds to step 286. If the end condition is satisfied in step 278, the determination is affirmed and the process proceeds to step 280.

In step 280, the CPU 42 ends the blower to the blower 34, and then proceeds to step 290.

In step 286, the CPU 42 controls the blower 34 so that the blower amount of the blower 34 is adjusted to the blower amount determined according to the latest downstream gas concentration acquired in step 268, and then proceeds to step 268. To do. The process of step 286 is an example of the supply process according to the present invention.

Here, the blast volume determined according to the latest downstream gas concentration acquired in step 268 is a blast volume larger than the current blast volume, and is derived by the blast volume derivation table or the blast volume derivation calculation formula. The amount of air blown. The airflow amount derivation table refers to a table in which the downstream gas concentration and the airflow amount are associated in advance, and the airflow amount derivation calculation formula is an operation in which the downstream gas concentration is an independent variable and the airflow amount is a dependent variable. Refers to an expression.

In step 288, the CPU 42 determines whether or not the display end condition, which is the condition for ending the display of the purge completion information and the gas processing completion information, is satisfied. As an example of the display end condition, there is a condition that the reception device 54 has received an instruction to end the display of the purge completion information and the gas processing completion information. As another example of the display end condition, there is a condition that a predetermined time (for example, 15 seconds) has elapsed as a time for ending the display after the execution of the process of step 284 is completed.

If the display end condition is not satisfied in step 288, the determination in step 288 is performed again. If the display end condition is satisfied in step 288, the process proceeds to step 290.

In step 290, the CPU 42 ends the display 58 of the information currently displayed on the display 58 among the purge completion information and the gas processing completion information, and then ends the gas processing.

As described above, in the gas treatment apparatus 200, the treatment according to the downstream gas concentration (for example, the treatment in steps 228 and 286) is executed. Therefore, according to the gas treatment apparatus 200, it is possible to reduce the labor required for the treatment related to the dilution emission treatment as compared with the case where the treatment related to the dilution emission treatment is executed without using the downstream gas concentration.

Further, in the gas treatment device 200, the air is blown into the container 22 with the air blowing amount determined according to the downstream gas concentration. Therefore, according to the gas treatment device 200, a situation occurs in which the amount of air blown by the blower 34 is excessive or insufficient as compared with the case where the air blown into the container 22 is always performed with the maximum amount of air blown from the start of the execution of the gas treatment. It can be suppressed.

Further, in the gas treatment apparatus 200, the gas treatment completion information is displayed on the display 58 according to the downstream gas concentration, so that the worker or the like is notified that the gas treatment is completed. Therefore, according to the gas treatment apparatus 200, it is possible to accurately notify the worker or the like that the gas treatment is completed, as compared with the case where the gas treatment completion information is displayed on the display 58 regardless of the downstream gas concentration. it can.

[ Second Embodiment ]
In the first embodiment , the case where the upstream side concentration sensor 32 and the downstream side concentration sensor 36 are used in combination has been described, but in the present second embodiment , the case where gas treatment is performed without using the upstream side concentration sensor 32. Will be described. In the second embodiment , the same components as those in the first and first embodiments are designated by the same reference numerals, and the description thereof will be omitted.

As an example, as shown in FIG. 9, the gas treatment device 300 according to the second embodiment is different from the gas treatment device 200 according to the first embodiment in that it does not have the upstream concentration sensor 32. Further, the gas treatment device 300 is different from the gas treatment device 200 in that it has a control device 302 instead of the control device 202.

As an example, as shown in FIG. 10, the control device 302 is different from the control device 202 in that it has a main control unit 304 instead of the main control unit 204.

The main control unit 304 is different from the main control unit 204 in that the secondary storage unit 46 stores the gas processing program 306 instead of the gas processing program 206.

Next, the operation of the portion of the gas treatment apparatus 300 according to the present invention will be described as a portion different from that of the first embodiment .

When the meter cock 16 is opened with the diversion port 18A and the intake port 22B connected by the hose 24 and the reception device 54 receives the gas processing execution start instruction, the CPU 42 performs the main procedure according to the gas processing program 306 . 2 Perform the gas treatment according to the embodiment .

Next, an example of the gas processing flow according to the second embodiment executed by the CPU 42 will be described with reference to FIG. Incidentally, according to the description of the gas processing according to the second embodiment, with the same step numbers and gas processing according to the first embodiment are used for the same treatment process as contained in the gas processing according to the first embodiment However, the description thereof will be omitted.

As an example, as shown in FIG. 11, the gas treatment according to the second embodiment does not have the treatment of steps 252 to 266 as compared with the gas treatment according to the first embodiment , and the step 282 is replaced with the step. The difference is that it has 350.

In step 350, the CPU 42 starts displaying the gas processing completion information, and then proceeds to step 284. By displaying the gas processing completion information on the display 58, the worker or the like is notified that the gas processing is completed. In step 282, the gas processing completion information is displayed in a display area different from the purge completion information display area in the same screen as the purge completion information while the display state of the purge completion information is maintained. In step 350, the purge completion information is not displayed.

Therefore, the worker needs to know the completion of the purge by another method. As another method, for example, a timer (not shown) indicates that a predetermined time has elapsed as the time required for the residual air of the gas meter 10 to be purged after the meter cock 16 is opened. There is a method of grasping the completion of purging by visually observing the measurement time by. In addition to this, for example, there is a method of grasping the completion of purging by the worker confirming that the integrated value of the flow rate displayed on the gas meter 10 is equal to or higher than the predetermined integrated value. .. In addition to this, there is a method of grasping the completion of purging by checking the display of the gas treatment completion information.

As described above, in the gas processing apparatus 300, the gas processing is executed by the CPU 42 without using the upstream concentration sensor 32. Therefore, according to the gas processing device 300, the number of parts can be reduced as compared with the case where the upstream concentration sensor 32 is used. Further, according to the gas treatment apparatus 300, the time from the start to the end of the execution of the gas treatment can be shortened as compared with the case where the treatment based on the upstream gas concentration is executed.

[ Second reference example ]
In the first embodiment , the case where the upstream side concentration sensor 32 and the downstream side concentration sensor 36 are used together has been described, but in the second reference example , the case where the gas treatment is performed without using the downstream side concentration sensor 36. Will be described. In the second reference example , the same components as those in the first embodiment are designated by the same reference numerals, and the description thereof will be omitted.

As an example, as shown in FIG. 12, the gas treatment device 400 according to the second reference example is different from the gas treatment device 200 according to the first embodiment in that it does not have the downstream concentration sensor 36. Further, the gas treatment device 400 is different from the gas treatment device 200 in that it has a control device 402 instead of the control device 38.

As an example, as shown in FIG. 13, the control device 402 is different from the control device 202 in that it has a main control unit 404 instead of the main control unit 204.

The main control unit 404 is different from the main control unit 204 in that the secondary storage unit 46 stores the gas processing program 406 instead of the gas processing program 206.

Next, the operation of the portion of the gas treatment apparatus 400 according to the present invention will be described as a portion different from that of the first embodiment .

When the meter cock 16 is opened with the diversion port 18A and the intake port 22B connected by the hose 24 and the reception device 54 receives the gas processing execution start instruction, the CPU 42 performs the main procedure according to the gas processing program 306 . 2 Perform the gas treatment according to the reference example .

Next, an example of the gas processing flow according to the second reference example executed by the CPU 42 will be described with reference to FIG. Incidentally, according to the description of the gas processing according to the second reference example, with the same step numbers and gas processing according to the first embodiment are used for the same treatment process as contained in the gas processing according to the first embodiment However, the description thereof will be omitted.

As an example, as shown in FIG. 14, the gas treatment according to the second reference example has a point having step 450 and a step 452 instead of steps 268 to 274 as compared with the gas treatment according to the first embodiment. The difference is that it does not have a point and steps 276,286.

As an example, as shown in FIG. 12, if the determination is denied in step 262, the process proceeds to step 450.

In step 450, the CPU 42 controls the blower 34 so that the blower amount of the blower 34 is adjusted to the blower amount determined according to the latest upstream gas concentration acquired in step 252, and then proceeds to step 252. To do.

Here, the blast volume determined according to the latest upstream gas concentration acquired in step 252 is a blast volume larger than the current blast volume, and is the blast volume derivation table or the blast volume according to the second reference example. It is the amount of air blown derived by the derivation calculation formula. In this second reference example , the blast volume derivation table refers to a table in which the upstream gas concentration and the blast volume are associated in advance, and the blast volume derivation calculation formula uses the upstream gas concentration as an independent variable. Refers to an arithmetic expression with the air volume as the dependent variable.

In step 452, the CPU 42 determines whether or not a predetermined time has elapsed since the execution of the process of step 266 was completed. Here, the predetermined time is, for example, a time predetermined as a time during which the downstream gas concentration becomes less than the above-mentioned second default concentration when the blower 34 continues to blow air at the current air volume. Point to. The predetermined time is a predetermined time based on the results of a test using an actual machine or a computer simulation.

In step 452, when the predetermined time has elapsed since the execution of the process of step 266 is completed, the determination is affirmed and the process proceeds to step 282. In step 452, if the predetermined time has not elapsed since the execution of the process of step 266 is completed, the determination is denied and the process proceeds to step 278.

As described above, in the gas treatment apparatus 400, when the upstream gas concentration does not reach the first predetermined concentration, the air is blown into the container 22 with the air blowing amount determined according to the current upstream gas concentration. Will be. Therefore, according to the gas treatment device 400, the power consumption required for blowing air is higher than that in the case where the inside of the container 22 is always blown with the maximum amount of air blown even though the upstream gas concentration does not reach the first predetermined concentration. It can be suppressed.

Further, in the gas processing apparatus 400, the gas processing completion information is displayed on the display 58 on condition that a predetermined time has elapsed since the display of the purge completion information was started. Therefore, according to the gas treatment apparatus 300, it is possible to accurately notify the worker or the like that the gas treatment is completed, as compared with the case where the gas treatment completion information is displayed on the display 58 at the same time as the purge completion information is displayed. ..

In each of the above embodiments, the case where the gas is directly sent from the gas outlet pipe 14 into the container 22 by using the hose 24 has been described, but the present invention is not limited to this, and is shown in FIG. 15 as an example. As described above, the worker may first put the gas in the bag body 500 and then send the gas in the bag body 500 into the container 22.

As an example, as shown in FIG. 15, the bag body 500 has an opening 500A. One end of the hose 24 is connected to the diversion port 18A and the other end of the hose 24 is connected to the opening 500A. The capacity of the bag body 500 is, for example, a volume corresponding to about 3 to 4 times the maximum volume of residual air that can be assumed as the volume of residual air in the gas meter 10.

When the gas treatment described in each of the above embodiments is realized by using the bag body 500, the worker first connects the diversion port 18A and the opening 500A with a hose 24. Next, the worker opens the meter cock 16 with the diversion port 18A and the opening 500A connected. As a result, residual air and gas are discharged from the gas outlet pipe 14 to the hose 24 via the diversion port 18A, and the residual air and gas released to the hose 24 are taken into the bag body 500 through the opening 500A.

When the worker completes the purging operation, the opening 500A of the bag body 500 is closed with a lid (not shown), and the gas contained in the bag body 500 is sealed in the bag body 500. Next, the worker removes the lid from the opening 500A and connects the opening 500A directly or via a hose (not shown) to the intake port 22B of the container 22. Then, the worker gives a gas treatment execution start instruction to the gas treatment device 20 (200, 300, 400), which is an instruction to start the gas treatment execution, and presses the bag body 500 to press the bag body 500. Gas is sent into the container 22 from. As a result, the gas treatment described in each of the above embodiments is executed, so that the same effect as the gas treatment described in each of the above embodiments can be obtained.

Further, in each of the above embodiments, when performing the purging operation, the gas released from the diversion port 18A due to the purging of the gas meter 10 needs to be described separately from the gas treatment devices 20, 200, 300, 400 (hereinafter, these are described separately). The present invention has been described with reference to an example in which the gas is taken into a “gas treatment apparatus” without a reference numeral, but the present invention is not limited thereto. For example, when the gas meter 10 is provided with a gas test port, the gas released from the gas test port as a result of purging the gas meter 10 may be taken into the gas treatment device. Further, the gas treatment device may allow the gas released from both the gas test port and the diversion port 18A to be taken into the gas treatment device as a result of purging the gas meter 10.

Further, in each of the above embodiments, as an example of displaying the purge completion information and the dilution completion information, a visible display by a display is shown, but the present invention is not limited thereto. For example, it may be a permanent visible display in which at least one of the purge completion information and the dilution completion information is printed and output on the paper by the printer. Further, at least one of the purge completion information and the dilution processing completion information may be an audible display output by voice by the voice reproduction device. A plurality of visible display, permanent visible display, and audible display may be combined. In addition to these displays, at least one of the purge completion information and the dilution completion information is transmitted by the gas treatment device to a communication device such as a smart device or a computer capable of communicating with the gas treatment device. May be good. Further, the vibration function mounted on the smart device or the like may be activated so that the completion of purging or the completion of gas treatment is notified to the operator, the manager or the like.

Further, in each of the above embodiments, air is shown as an example of a non-flammable diluting gas that dilutes the concentration of the gas, and a case where air is blown into the container 22 has been described, but the present invention is limited to this. It's not something. For example, a non-flammable dilution gas such as nitrogen may be supplied into the container 22 instead of air.

Further, in each of the above embodiments, the case where the gas treatment programs 48, 206, 306, 406 (hereinafter, referred to as “gas treatment programs” without reference numerals) is read from the secondary storage unit 46 is illustrated, but it is not always the case. It is not necessary to store it in the secondary storage unit 46 from the beginning. For example, as shown in FIG. 16, the gas processing program may be first stored in an arbitrary portable storage medium 600 such as an SSD, a USB memory, or a CD-ROM. In this case, the gas processing program of the storage medium 600 is installed in the gas processing apparatus, and the installed gas processing program is executed by the CPU 42.

Further, the gas treatment program is stored in a storage unit of another computer or server device connected to the gas treatment device via a communication network (not shown), and the gas treatment program responds to the request of the gas treatment device. It may be downloaded. In this case, the downloaded gas processing program is executed by the CPU 42.

Further, the gas treatment described in each of the above embodiments is merely an example. Therefore, it goes without saying that unnecessary steps may be deleted, new steps may be added, or the processing order may be changed within a range that does not deviate from the purpose.

Further, in each of the above embodiments, the case where the execution unit according to the present invention is realized by the software configuration using a computer is illustrated, but the present invention is not limited to this. For example, instead of the software configuration using a computer, the execution unit according to the present invention may be realized only by a hardware configuration such as Field-Programmable Gate Array (FPGA) or Application Specific Integrated Circuit (ASIC). Further, the execution unit according to the present invention may be realized by a combination of a software configuration and a hardware configuration.

All documents, patent applications and technical standards described herein are described herein to the same extent as if the individual documents, patent applications and technical standards were specifically and individually stated to be incorporated by reference. Incorporated by reference in the document.

10 Gas meter 14 Gas outlet 20, 200, 300, 400 Gas processing device 22A Opening 22B Intake port 24 Hose 30 Deodorizer 32 Upstream concentration sensor 34 Blower 36 Downstream concentration sensor 42 CPU
48,206,306,406 Gas processing program 58 display

Claims (8)

A container having an intake port for taking in flammable gas and a discharge port for dissipating the gas, from the main flow path which is at least one of a gas meter and a gas outlet pipe from which the gas is discharged from the gas meter. A container that takes in the separated gas from the intake port and
A supply means for supplying a non-flammable dilution gas to the container so as to dilute the gas taken into the container from the intake port and dissipate the gas from the emission port.
An execution unit that executes processing according to a detection result by a detection means that detects the concentration of the gas emitted from the emission port, and an execution unit.
Only including,
The treatment is a gas treatment apparatus including a supply treatment of supplying the dilution gas to the container in a supply amount determined according to the concentration detected by the detection means to the supply means . The process, when the detected concentration by the detecting means is a concentration of less than the lower limit of the flammable range, a process including a notification process of notifying that the dilution of the gas that is diverted from the main channel has been completed claims Item 1. The gas treatment apparatus according to item 1 . The dilution gas is air
The gas treatment apparatus according to claim 1 or 2 , wherein the supply means is a blower. When a gas meter whose residual air has not been purged is attached to a gas inlet pipe for inflowing flammable gas into the gas meter and a gas outlet pipe for releasing the gas from the gas meter, the gas meter is taken in. A container having a mouth and a discharge port for dissipating the gas takes in the gas diverted from the main flow path, which is at least one of the gas meter and the gas outlet pipe, from the intake port.
The supply amount is determined according to the concentration of the gas emitted from the emission port so that the supply means dilutes the gas taken into the container from the intake port and dissipates the gas from the emission port. A gas treatment method comprising supplying the container with a non-flammable dilution gas to the supply means . The gas treatment method according to claim 4 , wherein the deodorizer interposed in the gas branch flow path from the main flow path to the intake port deodorizes the gas. The bag body having an opening takes in the gas separated from the main flow path from the opening,
In the container, the gas taken into the bag through the opening is pressed against the bag while the opening and the intake are connected, so that the intake is opened through the opening. The gas treatment method according to claim 4 , wherein the gas is taken in through. The dilution gas is air
The gas treatment method according to any one of claims 4 to 6, wherein the supply means is a blower. Computer,
A program for functioning as the execution unit included in the gas treatment apparatus according to any one of claims 1 to 3 .