JP3887663B2 - Drain water discharge method and discharge device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a drain water discharge method and a discharge device. More specifically, the drain water generated from the compressed air can be smoothly discharged from the discharge valve without wasteful discharge of the compressed air. It is about technology that can be done.
[0002]
[Prior art]
Conventionally, as shown in FIG. 5, the drain water discharge method and discharge device include compressed air produced by an air compressor (not shown) passing through the compressed air discharge pipes 101 and 102. Drain water was generated by various devices 10 such as an after cooler, an air tank, an air dryer, and an air filter disposed in the above.
[0003]
Here, when the drain water generated in the various devices 10 is sent to the drain detection tank 30Z through the drain pipe 111, the on-off valve 20, the drain pipe 112, and the strainer 31, the level of the drain water sequentially rises. The drain sensor information 121 has been sent to the control unit 50Z by the sensor 35 confirming the presence of drain water. And from the control part 50Z, the drain water discharge signal 139 by drain water detection is sent to the discharge valve 40 connected with the drain piping 113 from the drain detection tank 30Z, and the discharge valve 40 is open | released by that thing, and drain water is supplied. It was discharged.
[0004]
On the other hand, when the drain water is stored as the drain sensor information 121, when the signal indicating that the drain water is detected disappears in the drain sensor information 121, the drain water is discharged by detecting the drain water correspondingly. The transmission of the signal 139 is also stopped, and the drain water discharge by the discharge valve 40 is also stopped.
[0005]
In addition, when drain water is sent from various devices 10 to the drain detection tank 30Z through the drain pipe 111, the on-off valve 20, the drain pipe 112, and the strainer 31, the drain detection tank 30Z is filled with compressed air and discharged. When the valve 40 is in a closed state, the drain pipe 111, the on-off valve 20, the drain pipe 112, and the strainer 31 have smaller inner diameters and the portion through which the drain water passes is narrower, the drain water is less likely to flow. In addition, there is a case where the drain water does not easily flow in from the relationship between the various devices 10 and the pressure of the compressed air in the drain detection tank 30Z.
[0006]
Therefore, when the drain water is sent to the drain detection tank 30Z through the drain pipe 111, the on-off valve 20, the drain pipe 112, and the strainer 31, the compressed air in the drain detection tank 30Z can be easily discharged. A pressure equalizing pipe 191 was provided between the drain detection tank 30Z and the various devices 10.
[0007]
In addition, as another technique of the conventional technique, although not specifically illustrated, in addition to the drain sensor 35, another drain sensor is disposed below the drain sensor 35 and connected to the control unit 50Z. Instead of continuing the discharge for a certain period of time, it may be considered that the drain water is continuously discharged until the drain water from the drain sensor 35 is detected until another drain sensor detects the drain water. It was.
[0008]
In addition, drain discharge is started at a constant cycle, and only when there is drain sensor information 121 for confirming the presence of drain water, drain water is discharged by sending a drain water discharge signal 139 by detecting drain water. It was thought.
[0009]
[Problems to be solved by the invention]
However, with respect to such a conventional technique related to the drain water discharge method and discharge device, there are the following problems.
[0010]
First, it is necessary to connect various devices and a drain detection tank to dispose the pressure equalizing pipe, and it was very disturbing to try to configure such a configuration.
[0011]
Secondly, the material cost of the pressure equalizing pipe, the cost for drilling various equipment and the drain detection tank, the cost for connecting the piping, etc. were required.
[0012]
Thirdly, the provision of a pressure equalizing pipe meant the possibility of complaints such as air leakage.
The present invention aims to solve such problems.
[0013]
[Means for Solving the Problems]
The present invention, when to drain from the state of being stored in the drain detection tank 30A at a fixed period T via a pipe portion 20,111,112 drain water is narrowed generated from the compressed air, the drain detection tank 30A When the drain water detection means 35 located inside senses the presence of drain water, while the drain water detection means 35 senses the presence of drain water, the purpose of pressure reduction The drain water is discharged for a minute time Δt. Further, when the drain water detecting means 35 senses the presence of the drain water, it is limited to a predetermined maximum time t. By solving the above-mentioned problems, the above problems were solved.
[0014]
Further, the present invention is located in the drain detection tank 30 </ b> A communicating with the narrow pipe portions 20, 111, and 112 through which drain water passes from various devices 10 that generate drain water from compressed air. A drain sensor 35 that detects presence, a drain discharge valve 40 that discharges drain water, and a control unit 50B that can receive a signal from the drain sensor 35 and transmit a signal to the drain discharge valve 40 are provided. When the controller 50B issues a drain discharge start signal by sensing the presence of drain water using the upstream drain sensor 15 provided in the various devices 10, the drain sensor 35 senses the presence of drain water. If the drain sensor 35 detects the presence of drain water, the drain sensor 35 detects the presence of drain water by the drain water discharge signals 134 and 135. If you are not known and characterized in that the drainage valve 40 by drain water discharge signal 136 minute time Δt during short time a reduced pressure of interest is configured to perform the discharge of drain water, and further, When the drain sensor 35 senses the presence of drain water, it is based on the drain water discharge signal 135 by the drain water detection for the maximum time t for the purpose of further limiting in addition to the sensing time. by wherein a, the above-mentioned problems are eliminated.
[0015]
DETAILED DESCRIPTION OF THE INVENTION
A drain water discharge method and discharge device according to the present invention will be described in detail with reference to the drawings.
Here, FIG. 1 is a diagram showing a first embodiment according to the present invention, FIG. 2 is a diagram showing an operation state of the first embodiment according to the present invention, and FIG. 3 is according to the present invention. The figure which showed 2nd Example is shown, FIG. 4 is the figure which showed the condition of the action | operation of 2nd Example by this invention.
[0016]
(First Example)
As shown in FIG. 1, reference numeral 10 denotes various devices, specifically, an aftercooler, an air tank, an air dryer, an air filter, or the like. In this case, the various devices 10 are arranged in the middle of the compressed air produced by an air compressor (not shown) passing through the compressed air pipes 101 and 102. Accordingly, drain water is generated in the various devices 10.
[0017]
Here, the drain water generated from the compressed air in the various devices 10 is sent to the drain detection tank 30A through the drain pipe 111, the on-off valve 20, the drain pipe 112, and the strainer 31 for removing various foreign substances, In the process, the control unit 50A transmits a drain discharge start signal at a constant period T, and the drain water level rises in the drain detection tank 30A, so that the drain sensor 35 as the drain water detection means 35 is operated by the drain water. When the presence is confirmed, the drain sensor information 121 is configured to be sent to the control unit 50A. Then, drain water discharge signals 131 and 132 based on drain water detection are sent from the control unit 50A to the drain valve 40 connected to the drain detection tank 30A and the drain pipe 113, and the drain valve 40 is opened during that time. ing.
[0018]
Here, regarding the processing of the drain sensor information 121, while the control unit 50A transmits the drain discharge start signal at a constant period T, the signal generated by the control unit 50A is during reception of the drain sensor information 121. Both the drain water discharge signal 131 by the drain water detection emitted through the drain water and the drain water discharge signal 132 by the drain water detection by which the signal is limited to the maximum time t determined even while the drain sensor information 121 is received. Conceivable.
[0019]
On the other hand, when the control unit 50A transmits the drain discharge start signal, when the drain water cannot flow into the drain detection tank 30A for some reason and the drain sensor 35 does not confirm the presence of the drain water, the drain sensor The information 121 is not sent to the control unit 50A. In this case, the drain water discharge signal 133 for a minute time is sent from the control unit 50A to the discharge valve 40 connected to the drain detection tank 30A and the drain pipe 113, but for a short time Δt. The discharge valve 40 is opened.
[0020]
In this case, when the drain water is narrowed from various devices 10 through the drain pipe 111, the on-off valve 20, the drain pipe 112, and the strainer 31, which are the pipe parts 20, 111, 112, the drain detection is performed. When the tank 30A is filled with compressed air and the discharge valve 40 is closed, the drain pipe 111, the on-off valve 20, the drain pipe 112, and the strainer 31 have smaller inner diameters, and the portion through which the drain water passes is narrower. It can be said that drain water is difficult to flow in.
[0021]
In addition, the drain water may be difficult to flow in due to the pressure relationship between the compressed air in the various devices 10 and the drain detection tank 30A.
[0022]
Here, as the position where the drain sensor 35 is disposed, the uppermost part of the drain detection tank 30A where compressed air is most likely to stay is desirable.
[0023]
In particular, when the features of the present invention are described, when the drain sensor 35 does not confirm the presence of the drain water, that is, because the compressed air stays in the drain detection tank 30A, the drain water flows into the drain detection tank 30A. If it is difficult to do so, the drain sensor information 121 is not sent to the control unit 50A. In this case, the controller 50A is instructed to discharge the minute time Δt as the minute time drain water discharge signal 133 because the compressed air from the drain sensor 35 is filled and the drain water is difficult to flow in. By discharging the compressed air or drain water staying in the detection tank 30A, the inside of the drain detection tank 30A is depressurized so that the drain water can easily flow in.
[0024]
By the way, when a specific value effective for the fixed period T, the maximum time t, and the minute time Δt is shown, the fixed period is 0.5 to 10 minutes and the maximum time is 3 to 30 seconds. If the minute time is set to 0.1 to 0.5 seconds, a certain effect can be seen. As an example, a certain period is set to 1 minute, the maximum time is 10 seconds, and the minute time is set to 0.2 seconds. Was ideal.
[0025]
However, it is better to consider that the ideal setting varies depending on the size of the drain detection tank 30A and the discharge valve 40 and the situation of drain water generation such as when the weather is fine in autumn or winter and when it is humid in summer.
[0026]
The drain water discharge method and discharge apparatus according to the present invention are configured as described above, and the operation thereof will be described in detail below.
[0027]
First, compressed air produced by an air compressor (not shown) generates drain water in various devices 10 disposed between them while passing through the compressed air discharge pipes 101 and 102. Here, the generated drain water is stored in the drain detection tank 30 </ b> A through the drain pipe 111, the on-off valve 20, the drain pipe 112, and the strainer 31, which are the narrow pipe sections 20, 111, and 112. At that time, various foreign substances are removed by the strainer 31.
[0028]
Therefore, as a general process, when the drain sensor 35 confirms the presence of drain water while the drain discharge start signal is transmitted at a constant period T by the timer function provided in the control unit 50A, the drain sensor information 121 Is sent to the discharge valve 40 as drain water discharge signals 131 and 132 based on drain water detection, and the discharge valve 40 is opened while the signal is being sent.
[0029]
In this case, as the signal generated by the control unit 50A, the drain water discharge by the drain water detection that emits a signal to the end while receiving the drain sensor information 121 while transmitting the drain discharge start signal at a constant period T. Both a signal 131 and a drain water discharge signal 132 by drain water detection that emits a signal only for a predetermined maximum time t are conceivable.
[0030]
On the other hand, in the drain detection tank 30 </ b> A, immediately after the drain water in the drain detection tank 30 </ b> A is discharged by the discharge valve 40, the drain water stays from a position near the portion where the drain pipe 113 is connected. However, there is a case where the drain water does not flow into the drain detection tank 30A due to the compressed air in the drain detection tank 30A and stays in the various devices 10.
[0031]
In this case, since the drain sensor 35 does not confirm the presence of drain water, the drain sensor information 121 is not sent to the control unit 50A. However, while the drain discharge is started at a constant period T, the control unit 50A sends a drain water discharge signal 133 for a minute time to the discharge valve 40, so that the minute time Δt is released in the discharge valve 40. By discharging the compressed air or the drain water in the drain detection tank 30A, the pressure in the drain detection tank 30A can be reduced, and the drain water can easily flow from the various devices 10. .
[0032]
This will be explained more specifically with reference to FIG.
As an example, first, A. As can be seen, a drain discharge start signal is transmitted at a constant period T by the timer function of the control unit 50A. That is, the START point of the drain discharge start is timed and transmitted by the timer function of the control unit 50A.
[0033]
On the other hand, B. As seen in A. The time when the drain discharge minute time Δt is turned ON can be set by the timer function of the control unit 50A, superimposed on the drain discharge start signal. That is, the drain discharge minute time Δt can always be set and issued at every fixed period T which is a drain discharge start signal.
[0034]
In addition, C.I. As can be seen, the controller 50A can obtain and transmit ON information of the drain sensor information 121 from the drain sensor 35.
[0035]
A. above. B. The time measurement result by According to the information of 1. As shown in FIG. 3, while the drain discharge start signal is transmitted to the discharge valve 40 at a constant period T, when the drain sensor information 121 is present, the drain sensor information 121 is being turned on. In the middle, while drain water is instructed by the drain water discharge signal 131 by the drain water detection and the drain sensor information 121 is in the OFF state, the minute time Δt is set to the unit by the drain water discharge signal 133 of the minute time. It is instructed to discharge drain water.
[0036]
As another example, D.I. As seen in A. The time when the maximum time t during drain discharge is ON can be set by the timer function of the control unit 50A superimposed on the drain discharge start signal. That is, it is possible to always set the maximum time t at the time of drain discharge for every fixed period T which is a drain discharge start signal.
[0037]
Therefore, A. B. D. The time measurement result by According to the information of 2. As shown in FIG. 3, while the drain discharge start signal is transmitted to the discharge valve 40 at a constant period T, when the drain sensor information 121 is present, the drain sensor information 121 is being turned on. However, the drain time is within a range not exceeding the maximum time t, while drain water is instructed by the drain water discharge signal 132 by the drain water detection, and the drain sensor information 121 is in the OFF state. The drain water discharge signal 133 for a minute time instructs the drain water to be discharged in units of the minute time Δt.
[0038]
(Second embodiment)
As seen in FIG. 3, the second embodiment is different from the first embodiment in that the upstream drain sensor 15 is provided in the various devices 10 and the upstream drain sensor 15 and the control unit 50B are connected. This is that the upstream drain sensor information 122 is made available.
[0039]
In this case, the reason why the upstream drain sensor 15 is provided is that, in the first embodiment, the drain discharge start signal is obtained by the timer function of the control unit 50A so as to be transmitted at a constant period T. In the embodiment, the drain discharge start signal is to be obtained from the upstream drain sensor information 122 from the upstream drain sensor 15. Accordingly, when the upstream drain sensor 15 senses the presence of drain water, the upstream drain sensor information 122 is issued, and it is considered that the drain discharge start signal is transmitted at that time.
[0040]
The drain water discharge signals 134 and 135 by the control unit 50B and the drain water detection and the drain water discharge signal 136 for a very short time are different from the first embodiment, but are due to the difference in the drain discharge start signal.
[0041]
Accordingly, as is apparent from FIG. 4, the drain discharge start signal is generated at a constant period T in the first embodiment, whereas in the second embodiment, the upstream drain sensor 15 is connected to the drain water. The point in time when the presence is detected is set as START. In addition, B. C. D. Since the contents shown in are the same except for the timing of the start of the drain discharge start signal, they are omitted. Naturally, 1.2. The same can be said about.
[0042]
Finally, regarding the drain discharge start signal, in addition to the description in the first embodiment and the second embodiment, a pressure sensor is disposed in the various devices 10 and in the drain detection tank 30A, and drain discharge is performed according to the changing information. It is also possible to start.
[0043]
【The invention's effect】
As is clear from the above description, the present invention can provide the following effects.
[0044]
First, if a drain sensor is installed and the presence of drain water is not sensed, drain water generated by various devices is drained by draining water for a very short time for the purpose of decompression. It was possible to flow in without being interrupted by compressed air.
[0045]
Secondly, there is no need to install a pressure equalizing tube that gets in the way.
[0046]
Third, troubles such as excessive accumulation of drain water were reduced.
[0047]
Fourth, the number of parts such as pressure equalizing pipes has been reduced, and the equipment has become cleaner.
[0048]
Fifth, the material cost of the pressure equalizing pipe, the cost for drilling the various equipment and drain detection tank, the cost for connecting the piping, etc. are no longer necessary.
[Brief description of the drawings]
FIG. 1 is a diagram showing a first embodiment according to the present invention. FIG. 2 is a diagram showing an operation state of the first embodiment according to the present invention. FIG. 3 is a diagram showing a second embodiment according to the present invention. FIG. 4 is a diagram showing the operation status of the second embodiment according to the present invention. FIG. 5 is a diagram showing a conventional technique.
10: Various equipment 15: Upstream drain sensor 20: Open / close valve (narrowed piping)
30A ... Drain detection tank 30Z ... Drain detection tank 31 ... Strainer 35 ... Drain sensor (Drain water detection means)
40 ... Drain valve 50A ... Control unit 50B ... Control unit 50Z ... Control unit 101 ... Compressed air discharge pipe 102 ... Compressed air discharge pipe 111 ... ..Drain piping (narrow piping)
112 ··· Drain piping (narrow piping)
113 ... Drain piping 114 ... Drain piping 121 ... Drain sensor information 122 ... Upstream drain sensor information 131 ... Drain water discharge signal 132 by drain water detection ... Drain water discharge signal 133 by drain water detection ... Drain water discharge signal 134 for minute time ... Drain water discharge signal 135 by drain water detection ... Drain water discharge signal 136 by drain water detection・ Drain water discharge signal 139 for a very short time .... Drain water discharge signal 191 when drain water is detected.

Claims (4)

Upon to discharge at a constant period through a pipe section drain water generated from the compressed air becomes narrower (20,111,112) from a state of being stored in the drain detection tank (30A) (T), the drain detection When the drain water detection means (35) located in the tank (30A) senses the presence of drain water, the drain water detection means (35) senses the presence of drain water. If not, drain water is discharged for a minute time (Δt) for the purpose of pressure reduction.   The drain water discharging method according to claim 1, wherein when the drain water detecting means (35) senses the presence of drain water, the drain water detecting means (35) is limited to a predetermined maximum time (t). Drain water is located in the drain detection tank (30A) communicating with the narrow pipes (20, 111, 112) through which drain water passes from various devices (10) that generate drain water from compressed air. A drain sensor (35) for detecting presence, a drain discharge valve (40) for discharging drain water, and receiving a signal from the drain sensor (35) or transmitting a signal to the drain discharge valve (40). A control unit (50B) is provided, and the control unit (50B) generates a drain discharge start signal by sensing the presence of drain water using an upstream drain sensor (15) provided in the various devices (10). When the drain sensor (35) detects the presence of drain water, the drain water discharge signal (134, 135) by the drain water detection while detecting the drain water, When the drain sensor (35) does not detect the presence of drain water, the drain discharge valve (40) is operated by the drain water discharge signal (136) for a minute time (Δt) for the purpose of decompression. An apparatus for discharging drain water, wherein the apparatus is configured to discharge. When the drain sensor (35) senses the presence of drain water, in addition to the sensing time, in addition to the purpose of further limiting, the drain water discharge signal ( 135). The drain water discharge device according to claim 3, wherein the drain water discharge device is according to claim 135.

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