JPS6258996B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a device for preventing mix-up of discharged liquids from a multi-chamber tank that individually accommodates liquids of different densities.

[Conventional technology]

BACKGROUND ART Multi-chamber tanks that individually accommodate liquids with different densities, such as gasoline, kerosene, and light oil, are mounted on, for example, vehicles and used for transportation. For example, after reaching the destination, when discharging 4B of the stored liquids 4A, 4B, and 4C from the tank 1 as shown in FIG. Operate the operating handle 3B to open 2B of 2A, 2B, and 2C.
However, prior to this, it is confirmed by the display plate 5 on the top or side of the tank 1 whether the liquid 4B stored in that chamber is of a predetermined type. However, if a worker sometimes misunderstands or operates the operating handle 3C of a chamber C containing a liquid different from the specified liquid, mistakes may occur, such as when pouring diesel oil into a kerosene tank at a gas station. There are drawbacks to doing so.

The present invention has been made in order to solve the above-mentioned problems, and is a device for preventing mix-up of discharged liquids in a multi-chamber tank, with the purpose of avoiding operator misunderstandings or erroneous operations when discharging a specified liquid from a tank. The purpose is to provide

[Means for solving problems]

The present invention is applied to a multi-chamber tank having a liquid discharge bottom valve in each chamber individually housing liquids with different densities, and the first aspect of the invention is characterized by: a discharge pipe communicating with the full bottom valve; a discharge valve 11 provided at the tip of the discharge valve 10; an outflow liquid discriminating means 13 which is interposed in a discharge pipe between each of the bottom valves 2A, 2B, 2C and the discharge valve and discriminates the type of liquid based on the difference in density; Outflow liquid display means 1 that receives a signal from the outflow liquid determination means and displays the type of outflow liquid.
4.

In addition to the configuration of the invention described above, the second invention also includes a discharge liquid designation means 21 through which an operator specifies and inputs a desired liquid, and a discharge liquid designation means 21 for specifying and inputting a desired liquid; Specified liquid display means 2 for displaying the type
2, a liquid match determining means 23 for determining whether or not the liquid type determined by the discharged liquid determining means matches the liquid type specified and input by the discharged liquid specifying means; It is equipped with an alarm means 24 which receives a signal and notifies whether or not discharge is possible.

Furthermore, in the third invention, in place of the alarm means in the configuration of the second invention, when a mismatch is detected in the liquid match determining means, the upstream side of the discharge valve receives a signal from the liquid match determining means. It is equipped with a gate valve opening/closing means 34 for opening and closing the provided gate valve.

[Operation and effects of the invention]

According to the first invention, since the liquid contained in the multi-chamber tank can be automatically displayed, the operator can confirm the type of liquid flowing out. Also, the second and third
According to the invention, an alarm is issued and the discharge pipe 10 is automatically closed when the flowing liquid is different from the specified liquid. Therefore, erroneous operations due to operator's misunderstanding or memory error are eliminated, and the liquid contained in the tank can be discharged without making a mistake.

〔Example〕

Hereinafter, the present invention will be explained in detail based on examples thereof. FIG. 2 is an overall system diagram of the device for preventing mix-up of discharged liquids according to the present invention. In addition, in the following description of each configuration, those having the same function for chambers A, B, and C and the liquids contained therein, such as gasoline, kerosene, and diesel oil, are indicated by subscripts A, B, and C, respectively.
C is added to distinguish them.

In the figure, 10 is a discharge pipe that communicates with each of the bottom valves 2A, 2B, and 2C, and a discharge valve 11 such as a ball valve is provided at the end of the pipe. The discharge pipe 10 between the two is provided with an effluent liquid determining means 13 that receives the effluent liquid directly or via a branch pipe 12. Outflow liquid determination means 1
3 is a known vibrating liquid density meter, which is
When an operator operates the operation handle 3C of the tank 1, the liquid 4C flows out from the bottom valve 2C that opens, passes through the discharge pipe 10 and the branch pipe 12, and stays in the outflow liquid determination means 13. This is to detect and determine that the liquid 4C is, for example, light oil.

This outflow determining means 13 includes an outflow determining means 13
A spilled liquid display means 14 is attached which displays the type of liquid flowing out in response to a signal from the drained liquid, and displays the type of liquid corresponding to the spilled liquid in response to the operation of the spilled liquid determining means 13. It is.
The display on the outflow liquid display means 14 may be in the form of lighting lamps 15A, 15B, and 15C as shown in the figure, or may be in the form of color, sound, or letters.

The effluent liquid determination means 13 and the effluent liquid display means 14 have a relay circuit 16 as shown in FIG. r3,r
4 to open and close.

According to the above configuration, it is possible to prevent mixing up of discharged liquids as described below.

First, the discharge valve 11 is closed, and a desired operating handle 3A is operated to open the bottom valve 2A. liquid 4
Gasoline A flows out into the discharge pipe 10 and the branch pipe 12. Liquid discriminating means 1 flowing out via branch pipe 12
The liquid 4A introduced into the liquid 4A is determined to be gasoline, for example, by using the fact that the natural frequency of the vibrator changes depending on the density of the liquid in which the vibrator stays. In response to this determination, only the contact L in the outflow liquid determining means 13 of the relay circuit 16 is closed. Since the relay R3 is energized, the corresponding normally open contact r3 of the outflow liquid display means 14 is closed and the normally closed contact R3 is opened. That is, when the normally open contact r3 of the circuit 17A is closed, the lamp 15A is turned on. On the other hand, in circuit 17B, normally closed contact R3 is open, so lamp 15B does not light up, and circuit 17
Since the relay R4 in the spilled liquid determining means 13 is not energized in C, the normally open contact r4 in the spilled liquid display means 14 is in an open state, and the lamp 15C
never lights up.

If the spilled liquid is kerosene, which is liquid 4B, contacts L and H
are both maintained in an open state, and the outflow liquid indicating means 1
Only the lamp 15B is lit through the normally closed contacts r3 and r4 in the circuit 17B in the liquid 4C.
If it is light oil, only contact H will be closed, and circuit 17
Only the lamp 15C of C lights up.

Therefore, by looking at the lamps 15A, 15B, and 15C lit on the outflow liquid display means 14, the operator can recognize the type of liquid flowing out. If the displayed outflow liquid is the desired liquid to be discharged, the operator can immediately open the discharge valve 11 and discharge the liquid into a predetermined tank.

If the displayed spilled liquid is different from the desired liquid to be drained, the displayed spilled liquid 4
The bottom valve 2A is closed by operating the operating handle corresponding to A, for example 3A. Next, the auxiliary valve 18 (third
(see figure) to discharge the liquid 4A remaining in the discharge pipe 10 and branch pipe 12. When the discharge is completed, the discharge valve 11 and the auxiliary valve 18 are closed, the bottom valve 2B is newly opened, and the liquid 4B is discharged into the discharge pipe 10 and the branch pipe 1.
The outflow liquid discriminating means 13 judges the result and displays it on the outflow liquid display means 14.
Once you confirm that this display is the desired liquid,
As described above, the desired liquid can be discharged into a predetermined tank by opening the discharge valve 11.

FIG. 4 shows an embodiment of a different invention, and parts that are not different from the above-described invention are given the same reference numerals and explanations are omitted.

In addition to the above-mentioned configuration, the present invention includes a discharged liquid designation means 21 through which an operator specifies and inputs a desired liquid, and a designated liquid display means which receives a signal from the discharged liquid designation means 21 and displays the desired liquid. 22, a liquid match determining means 23 for determining whether or not the liquid type determined by the discharged liquid determining means 13 matches the liquid type specified and input by the discharged liquid specifying means 21; It has an alarm means 24 which receives the signal from the means 23 and issues an alarm as to whether or not discharge is possible.

The discharge liquid designation means 21 is operated by the operator by the switch 2.
5A, 25B, or 25C to designate the liquid to be discharged, and the designated liquid display means 22 lights up in response to the operation of the discharged liquid designation means 21, which is similar to the above-mentioned outflow liquid display means 14. Lamps 26A, 26B, and 26C are provided.
These relay circuits are formed as a relay circuit 32 as shown in FIG. 5, which includes the aforementioned relay circuit 16 and is integrated with relay circuits for the liquid coincidence determining means 23 and the alarm means 24.

The operation will be explained below. First, the operator specifies the desired discharge liquid and presses the switch 25A.
At this time, the lamp 26A corresponding to the switch 25A lights up and the relay R5 is energized.
The corresponding normally open contact r5 in the discharge liquid designating means 21 is closed. Therefore, even if you let go of the switch 25A, the self-holding circuit 27A will keep the lamp 26A
The lighting and the energized state of relay R5 are maintained. Further, the energized relay R5 closes the normally open contact r5 of the circuit 28A in the liquid match determining means 23.

Next, in order to drain the desired liquid, the operator opens the bottom valve 2A using the operation handle 3A, causing the liquid 4A to flow out into the discharge pipe 10 and the branch pipe 12.
The effluent liquid 4A is measured in the effluent liquid determining means 13, and is determined to be gasoline based on its density. Then, as described above, contact L is closed, relay R3 is energized, normally open contact r3 of circuit 17A in outflow liquid display means 14 is closed, and lamp 15A is closed.
lights up, and the normally closed contact r3 of the circuit 28A in the liquid match determining means 23 becomes open.

Therefore, with the relay R5 in the energized state as described above, the circuit 28A in the liquid match determining means 23
Even if the normally open contact r5 is closed, the normally closed contact r
3 is open, the relay R8 of the circuit 28A is not energized, and the normally open contact r8 of the circuit 29A of the alarm means 24 remains open, and the alarm device, such as a buzzer, connected to this circuit 29A 30 is not energized, and the alarm horn 30 does not sound. This is because the type of spilled liquid 4A matches the specified liquid, and after confirming that the alarm 30 does not sound, the worker opens the discharge valve 11 and discharges the liquid 4A, that is, gasoline, into the designated tank. be able to. Note that the switch 25 of the discharge liquid specifying means 21
Since B and 25C are in the open state unless pushed by the operator, the relays R6 and R7 are not energized, and therefore the corresponding liquid match determining means 2
Normally open contacts r6 and r7 in 3 are open, relays R9 and R10 are not energized, and alarm means 24
The normally open contacts r9 and r10 of the circuits 29B and 29C remain open, and the horn 30 will not sound unless the normally open contact r8 is closed as described above.

Next, if the spilled liquid is different from the engine liquid 4A and the designated liquid is kerosene liquid 4B, the liquid matching determination means 23
While the normally open contact r3 of the circuit 28B inside is closed,
In the discharge liquid specifying means 21, since the switch 25B is pressed, the relay R6 is energized, and the circuit 28B
The normally open contact r6 inside is also closed. Therefore, circuit 28
The normally open contact r3 of B remains closed, the relay R9 of the circuit 28B is energized, the normally open contact r9 of the circuit 29B in the alarm means 24 is closed, and the horn 30 sounds.

Then, the operator notices that the spilled liquid and the specified liquid are different, so the lamps 15A, 15B, 1 of the spilled liquid display means 14 and the specified liquid display means 22
5C, 26A, 26B, and 26C, the user notices the error in operating either the operating handle 3A or the switch 25B.

If the outflow liquid is not the desired one, the desired liquid can be discharged from the bottom valve after the outflow liquid in the discharge pipe 10 and the branch pipe 12 is discharged, as in the above-described invention. If the switch for the specified liquid is pressed incorrectly, open the main switch 31 of the relay circuit 32 and turn off the lamp 26B for the incorrect specified liquid.
, close the main switch 31 again, and press the switch 25A for the designated liquid that matches the spilled liquid, the alarm 30 will no longer sound. Then, the discharge valve 11 can be opened to discharge the fluid into the tank.

FIG. 6 shows a further different embodiment of the invention, and parts that are not different from the above-described invention are given the same reference numerals and explanations are omitted. The difference from the second invention example is that
In the relay circuit 36 shown in FIG. 7, a gate valve opening/closing means 34 having a solenoid 33, for example, is provided in place of the alarm means 24 in the relay circuit 32. Furthermore, a gate valve 35 that is closed by a gate valve opening/closing means 34 is installed upstream of the discharge valve 11 in the discharge pipe 10.

According to such a configuration, the gate valve opening/closing means 34 closes the gate valve 35 instead of sounding the alarm horn 30, so that when the discharged liquid and the designated liquid are different, the discharge valve 11 is opened. No liquid will be drained. The procedure for discharging is the same as the invention described above, except that the main switch 31 or the switch 37 in the gate valve opening/closing means 34 is opened, the operation of the gate valve opening/closing means 34 is stopped, and the gate valve 35 is opened. The same is true. The operation of relay circuit 36 is no different from that of relay circuit 32.

Although three types of liquids have been described in the above explanation, it can be applied to any tank that handles two or more types of liquids, and the same liquid may be placed in two or more chambers. The liquid stored in the multi-chamber tank is automatically displayed, an alarm is issued if the spilled liquid is different from the designated liquid, and the discharge pipe 10 is automatically closed, so that misunderstandings can be avoided due to misunderstandings. This eliminates human error and allows the liquid stored in the tank to be discharged without making a mistake.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view of a conventional multi-chamber tank containing different liquids, FIG. 2 is a system diagram of a device for preventing mix-up of discharged liquids according to the present invention, and FIG. 3 is a relay circuit diagram thereof.
Figure 4 is a system diagram of a discharge liquid mix-up prevention device of a different invention, Figure 5 is its relay circuit diagram, and Figure 6 is the third
FIG. 7 is a system diagram of the device for preventing mix-up of discharged liquids according to the invention, and FIG. 7 is a diagram of the main parts of the relay circuit. 1...Tank, 2A, 2B, 2C...Bottom valve, 4
A, 4B, 4C...liquid, 10...discharge pipe, 11
...Discharge valve, 13...Outflow liquid determination means, 14...
... Outflow liquid display means, 21 ... Discharged liquid designation means, 22 ... Specified liquid display means, 23 ... Liquid match determining means, 24 ... Alarm means, 34 ... Gate valve opening/closing means, 35 ... Gate valve, A, B, C...room.

Claims (1)

[Claims] 1. Each chamber individually housing liquids with different densities,
In a multi-chamber tank having a bottom valve for liquid discharge, there is a discharge valve provided at the tip of a discharge pipe communicating with the full bottom valve, and a discharge pipe between each bottom valve and the discharge valve, and a discharge valve is provided between the discharge pipes and the discharge pipes, and the difference in density is and a spilled liquid display means that displays the type of liquid flowing out in response to a signal from the spilled liquid discrimination means. A device for preventing mix-up of discharged liquid from a multi-chamber tank, characterized in that it can be recognized. 2. Each chamber individually accommodates liquids with different densities,
In a multi-chamber tank having a bottom valve for liquid discharge, there is a discharge valve provided at the tip of a discharge pipe communicating with the full bottom valve, and a discharge pipe between each bottom valve and the discharge valve, and a discharge valve is provided between the discharge pipes and the discharge pipes, and the difference in density is a discharged liquid discriminating means for discriminating the type of liquid according to the method; a discharged liquid display means for displaying the type of liquid to be discharged in response to a signal from the discharged liquid discriminating means; and a discharged liquid for inputting a desired liquid by an operator. a designation means; a designated liquid display means that receives a signal from the discharged liquid designation means and displays the designated type of the liquid; The device is equipped with a liquid match determining means for determining whether or not the liquid types match, and an alarm means that receives a signal from the liquid match determining means and notifies whether or not discharge is possible. A device for preventing mix-up of discharged liquid from a multi-chamber tank, characterized in that it is possible to determine whether to open or close a discharge valve according to the presence or absence of the discharged liquid. 3. In each chamber individually containing liquids of different densities,
In a multi-chamber tank having a bottom valve for liquid discharge, there is a discharge valve provided at the tip of a discharge pipe communicating with the full bottom valve, and a discharge pipe between each bottom valve and the discharge valve, and a discharge valve is provided between the discharge pipes and the discharge pipes, and the difference in density is a discharged liquid discriminating means for discriminating the type of liquid according to the method; a discharged liquid display means for displaying the type of liquid flowing out in response to a signal from the discharged liquid discriminating means; and a discharged liquid designation means for inputting a desired liquid by an operator. a designated liquid display means that receives a signal from the discharged liquid designation means and displays the designated type of liquid; and a designated liquid display means that receives a signal from the discharged liquid designation means and displays a designated type of liquid, and a designated liquid type that is determined by the discharged liquid determination means and that is designated and inputted by the discharged liquid designation means. a liquid match determining means for determining whether or not the liquid type matches the liquid type; and gate valve opening/closing means for opening and closing the gate valve, and the gate valve is configured to automatically close when the type of outflowing liquid and the specified liquid do not match. Discharge liquid mix-up prevention device.