Gas holder safety water seal system

Abstract

The utility model discloses a gas holder safety water seal system which comprises a gas holder, an inlet of the gas holder is connected with an outlet of a gas-liquid separator through a gas holder gas inlet pipe, a stop valve is installed on the gas holder gas inlet pipe, a sealing base on the lower portion of the gas holder is connected with a sealing water pipe, and the upper portion of the gas-liquid separator is connected with a water supplementing pipe forming water seal for the gas-liquid separator. The gas-liquid separator at the front end of the inlet of the gas holder is further provided with a balance stabilizing system for preventing the gas-liquid separator from being broken, water is supplemented to the gas-liquid separator at the front end of the inlet of the gas holder in real time by controlling the water supplementing pipe, when the system is abnormal, water is injected into the gas-liquid separator and the water supplementing pipe, the gas-liquid separator is used as a water-sealed tank, and the safety problem caused by system blow-by is prevented through the water sealing effect; meanwhile, the front pressure and the rear pressure of the stop valve are controlled by the balancing and stabilizing system to keep relative balance, so that the water seal of the gas-liquid separator can be prevented from being broken, and the absolute safety of system isolation is guaranteed.

Description

Technical Field

[0001] The utility model relates to the field of chemical gas cabinets, in particular to a gas cabinet safety water seal system. Background Art

[0002] The acetylene gas sent from the generating process enters the gas cabinet 5 through the gas-liquid separator 1. The gas cabinet inlet pipe 3 from the outlet of the gas-liquid separator 1 to the gas cabinet 5 is designed with a manual shut-off valve 4 (such as Figure 2 The purpose of designing the gas-liquid separator 1 is to intermittently remove the water entrained in the acetylene gas; the purpose of designing the manual shut-off valve 4 is to effectively isolate the generating system and the acetylene gas holder 5 in the event of system maintenance or abnormal production.

[0003] However, the function of the gas-liquid separator 1 is only to intermittently remove the moisture entrained in the acetylene gas, and it has no other functions; and acetylene gas is a flammable and explosive gas with a very wide explosion range. During system maintenance or production abnormalities, it is difficult to effectively isolate the generating system and the acetylene gas tank only by relying on the manual shut-off valve 4, and the system needs to be replaced through the nitrogen pipe 8. Utility Model Content

[0004] In order to solve the above-mentioned problems, the utility model provides a gas tank safety water seal system.

[0005] The utility model is realized through the following technical solutions:

[0006] A gasholder safety water seal system comprises a gasholder, wherein the gasholder inlet is connected to the gas-liquid separator outlet through a gasholder air inlet pipe, a cut-off valve is installed on the gasholder air inlet pipe, a sealing water pipe is connected to a sealing base at the lower part of the gasholder, a water supply pipe is connected to the upper part of the gas-liquid separator to form a water seal therewith, and the gas-liquid separator is also provided with a balance and stability system to prevent the seal from being broken.

[0007] Further optionally, the balance and stability system includes a PLC controller, which is electrically connected to a pressure detector installed on the gas tank air inlet pipe and a gas tank pressure detector, and the pressure detector and the gas tank pressure detector are respectively arranged at the front end and the rear end of the cut-off valve.

[0008] Further optionally, an electric control valve is installed on the water supply pipe, and the electric control valve is electrically connected to the PLC controller.

[0009] Further optionally, the inlet of the water supply pipe is connected and fixed to the sealing water pipe.

[0010] Further optionally, the liquid level meter on the side of the gas-liquid separator is electrically connected to the PLC controller.

[0011] Further optionally, the bottom of the gas-liquid separator and the lower part of the gas cabinet air inlet pipe are connected to the water collecting pipe through a drain pipe, and a control valve is installed on the drain pipe.

[0012] Further optionally, a replacement nitrogen pipe is installed on the gas cabinet air inlet pipe, and control valves are installed on the nitrogen pipe and the sealing water pipe.

[0013] Compared with the existing technology, the beneficial effects of the utility model are: the utility model controls the water supply pipe to replenish water to the gas-liquid separator at the front end of the gas cabinet inlet in real time. When the system is abnormal, the gas-liquid separator and the water supply pipe are filled with water, and the separator is used as a water seal tank. The water seal effect prevents safety problems caused by system gas cross-talk. At the same time, by controlling the pressure before and after the cut-off valve to maintain a relative balance through the balance and stability system, the water seal of the gas-liquid separator can be prevented from breaking, thereby ensuring the absolute safety of the system isolation. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the utility model system;

[0015] Figure 2 It is a system diagram of the prior art of this utility;

[0016] In the figure: gas-liquid separator 1, liquid level meter 101, acetylene gas pipeline 2, gas cabinet air inlet pipe 3, shut-off valve 4, gas cabinet 5, sealing water pipe 6, control valve 7, nitrogen pipe 8, water collecting pipe 9, water supply pipe 10, electric control valve 11, PLC controller 12, pressure detector 13, gas cabinet pressure detector 14. DETAILED DESCRIPTION

[0017] The present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods:

[0018] like Figure 1 As shown, a gas cabinet safety water seal system includes a gas cabinet 5, the inlet of the gas cabinet 5 is connected to the outlet of the gas-liquid separator 1 through the gas cabinet air inlet pipe 3, a cut-off valve 4 is installed on the gas cabinet air inlet pipe 3, a sealing water pipe 6 is connected to the sealing base at the lower part of the gas cabinet 5, a water supply pipe 10 is connected to the upper part of the gas-liquid separator 1 to form a water seal therefor, and the gas-liquid separator 1 is also provided with a balance and stability system to prevent the seal from being broken.

[0019] The balance and stability system includes a PLC controller 12, which is electrically connected to a pressure detector 13 and a gas cabinet pressure detector 14 installed on the gas cabinet air inlet pipe 3. The pressure detector 13 and the gas cabinet pressure detector 14 are respectively arranged at the front end and the rear end of the shut-off valve 4.

[0020] An electric control valve 11 is installed on the water supply pipe 10 , and the electric control valve 11 is electrically connected to a PLC controller 12 .

[0021] The inlet of the water supply pipe 10 is connected and fixed to the sealing water pipe 6 .

[0022] The liquid level meter 101 on the side of the gas-liquid separator 1 is electrically connected to the PLC controller 12 .

[0023] The bottom of the gas-liquid separator 1 and the lower part of the gas cabinet air inlet pipe 3 are connected to the water collecting pipe 9 through a drain pipe, and a control valve 7 is installed on the drain pipe. In this way, when the system is in normal use, liquid accumulation in the gas cabinet air inlet pipe 3 is avoided, and acetylene gas entering the gas cabinet 5 containing moisture is avoided.

[0024] A replacement nitrogen pipe 8 is also installed on the gas cabinet air inlet pipe 3, and a control valve 7 is installed on the nitrogen pipe 8 and the sealing water pipe 6. The control valve 7 is used to control and ensure the normal and stable operation of the system.

[0025] The implementation principle of a gas cabinet safety water seal system in the embodiment of the present application is:

[0026] The acetylene gas from the generating system enters the gas-liquid separator 1 through the acetylene gas pipeline 2. The moisture in the acetylene gas falls and gathers due to its gravity, and the acetylene gas separated from the moisture enters the gas cabinet 5 along the gas cabinet air inlet pipe 3 for storage. When there is a lot of moisture inside the gas-liquid separator 1, the control valve 7 on the drain pipe can be opened to discharge the liquid into the water collecting pipe 9. After the discharge, the control valve 7 on the drain pipe can be closed.

[0027] When the system is under maintenance or production is abnormal, the shut-off valve 4 is manually closed. After closing, the personnel manually send a system maintenance control signal to the PLC controller 12. The PLC controller 12 controls the opening of the electric control valve 11 on the water supply pipe 10. The sealing water in the sealing water pipe 6 replenishes the gas-liquid separator 1 along the water supply pipe 10, so that the gas-liquid separator 1 is filled with water (whether it is filled to exceed the liquid level of the shut-off valve 4 can be known through the feedback signal of the liquid level meter 101), and the gas-liquid separator 1 is used as a water seal tank. The water seal function prevents the safety problems caused by the acetylene gas cabinet from leaking gas to the system, and there is no need to perform system nitrogen replacement and acetylene gas replacement work, saving acetylene gas and nitrogen used for replacement.

[0028] At the same time, the pressure detector 13 and the gas cabinet pressure detector 14 of the balanced stability system respectively transmit the real-time pressure in the gas-liquid separator 1 and the gas cabinet 5 to the PLC controller 12 (at this time, the shut-off valve 4 is closed, the pressure detector 13 is connected to the gas-liquid separator 1, and the gas cabinet pressure detector 14 is connected to the gas cabinet 5 to detect the real-time pressure of the device). When it is detected that the pressure of the gas cabinet 5 is higher than the pressure of the gas-liquid separator 1 at the front end of the shut-off valve 4, the water supply pipe 10 continues to supply water and the liquid level rises along the vertical water supply pipe 10 (as the liquid level h rises, its pressure is F=ρghS, and its effect on the pressure of the shut-off valve 4 will also rise). When the pressure at the front end of the shut-off valve 4 is not lower than the pressure of the gas cabinet 5, the PLC controller 12 controls the electric control valve 11 on the water supply pipe 10 to close, so that the pressure of the gas-liquid separator 1 between the electric control valve 11 and the shut-off valve 4 is kept relatively balanced with the pressure of the gas cabinet 5, which can prevent the water seal of the gas-liquid separator 1 from breaking, thereby ensuring the absolute safety of the system isolation.

[0029] The above shows and describes the basic principles, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A gas cabinet safety water seal system, comprising a gas cabinet (5), wherein the inlet of the gas cabinet (5) is connected to the outlet of a gas-liquid separator (1) through a gas cabinet air inlet pipe (3), a cut-off valve (4) is installed on the gas cabinet air inlet pipe (3), and a sealing water pipe (6) is connected to the sealing base at the bottom of the gas cabinet (5), characterized in that: The upper part of the gas-liquid separator (1) is connected to a water supply pipe (10) for forming a water seal therewith, and the gas-liquid separator (1) is also provided with a balance stabilization system for preventing the seal from being broken.

2. A gas cabinet safety water seal system according to claim 1, characterized in that: The balance and stabilization system comprises a PLC controller (12), the PLC controller (12) being electrically connected to a pressure detector (13) and a gas cabinet pressure detector (14) installed on a gas cabinet air inlet pipe (3), and the pressure detector (13) and the gas cabinet pressure detector (14) being respectively arranged at the front end and the rear end of the shut-off valve (4).

3. A gas tank safety water seal system according to claim 2, characterized in that: An electric control valve (11) is installed on the water supply pipe (10), and the electric control valve (11) is electrically connected to a PLC controller (12).

4. A gas tank safety water seal system according to claim 3, characterized in that: The inlet of the water supply pipe (10) is connected and fixed to the sealing water pipe (6).

5. A gas cabinet safety water seal system according to claim 1, characterized in that: The liquid level meter (101) on the side of the gas-liquid separator (1) is electrically connected to the PLC controller (12).

6. A gas tank safety water seal system according to claim 5, characterized in that: The bottom of the gas-liquid separator (1) and the lower part of the gas cabinet air inlet pipe (3) are connected to the water collecting pipe (9) through a drainage pipe, and a control valve (7) is installed on the drainage pipe.

7. A gas tank safety water seal system according to claim 6, characterized in that: A replacement nitrogen pipe (8) is also installed on the gas cabinet air inlet pipe (3), and a control valve (7) is installed on the nitrogen pipe (8) and the sealing water pipe (6).

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