阅读说明：本技术 一种煤气防泄漏自动复位装置 (Automatic resetting device for preventing gas leakage ) 是由 陈小东 于 2018-07-24 设计创作，主要内容包括：本发明揭示了一种煤气防泄漏自动复位装置,防泄漏装置设有旁路管道,旁路管道与电磁阀一端相连,电磁阀另一端与蓄能罐相连；蓄能罐内部罐体里设有浮子,浮子与排气调压机构相连,蓄能罐的上部设有排气密封盖,排气密封盖与排气调压机构活动连接,蓄能罐的上端设有排气管道,排气管道上安装有排气阀；防泄漏装置的防泄漏装置指示杆上方安装有接近开关。本发明煤气防泄漏自动复位装置,防泄漏装置和蓄能罐之间安装电磁阀,防泄漏装置指示杆上方安装有接近开关,时间继电器用于控制电磁阀,通过清除腔内“憋气”实现防泄漏装置自动复位；从根本上解决长期困扰现场的腔内“憋气”导致防泄漏装置失效的问题,确保煤气排水正常安全运行。(The invention discloses a gas leakage-proof automatic reset device, which is provided with a bypass pipeline, wherein the bypass pipeline is connected with one end of an electromagnetic valve, and the other end of the electromagnetic valve is connected with an energy storage tank; a floater is arranged in a tank body in the energy storage tank and connected with an exhaust pressure regulating mechanism, an exhaust sealing cover is arranged at the upper part of the energy storage tank and movably connected with the exhaust pressure regulating mechanism, an exhaust pipeline is arranged at the upper end of the energy storage tank, and an exhaust valve is arranged on the exhaust pipeline; and a proximity switch is arranged above an indication rod of the leakage-proof device. According to the automatic coal gas leakage prevention reset device, the electromagnetic valve is arranged between the leakage prevention device and the energy storage tank, the proximity switch is arranged above the indicating rod of the leakage prevention device, the time relay is used for controlling the electromagnetic valve, and the automatic reset of the leakage prevention device is realized by removing the 'suffocation' in the cavity; fundamentally solves the long-term problem of hindering the gas of hindering in the on-the-spot intracavity "feel out of the way" and lead to preventing leaking the device and become invalid, ensures the normal safe operation of coal gas drainage.)

1. A coal gas leakage-proof automatic resetting device comprises a drainage seal tank, a secondary valve, a drainage pipeline, a downpipe, a leakage-proof device indicating rod and a drainage pipeline, wherein the downpipe is connected with the drainage seal tank through the secondary valve, and coal gas condensate water is filled in the drainage seal tank; drainage pipe links to each other with the drainage seal pot, installs on the drainage pipe and prevents leaking the device, prevents leaking the device and is equipped with and prevents leaking device indicator lever, drain pipe, its characterized in that: the anti-leakage device is provided with a bypass pipeline, the bypass pipeline is connected with one end of the electromagnetic valve, and the other end of the electromagnetic valve is connected with the energy storage tank; a floater is arranged in a tank body in the energy storage tank and connected with an exhaust pressure regulating mechanism, an exhaust sealing cover is arranged at the upper part of the energy storage tank and movably connected with the exhaust pressure regulating mechanism, an exhaust pipeline is arranged at the upper end of the energy storage tank, and an exhaust valve is arranged on the exhaust pipeline; and a proximity switch is arranged above an indication rod of the leakage-proof device.

2. A gas leakage prevention automatic re-setting device as claimed in claim 1, wherein a drain outlet is provided at the lower end of the energy storage tank.

3. An automatic gas leakage prevention reset device as recited in claim 1, wherein the solenoid valve installed between the energy storage tank and the leakage prevention device is a two-position two-way solenoid valve.

4. A gas leakage prevention automatic re-setting device, as per claim 3, characterized in that said two-position two-way electromagnetic valve is DN40 type two-position two-way electromagnetic valve.

5. An automatic gas leakage prevention reset device as claimed in claim 4, wherein said DN40 type two-position two-way solenoid valve is a normally open type solenoid valve powered by a single dc 24V power supply.

6. A gas leakage prevention automatic re-setting device, as per claim 5, characterized in that the opening and closing of said electromagnetic valve is controlled by time relay.

7. A gas leakage prevention automatic re-setting device as claimed in claim 1, wherein said proximity switch is a dc 24V power supply proximity switch for leakage prevention device status signal detection and feedback.

Technical Field

The invention relates to the technical field of gas pipeline drainage, in particular to a gas leakage-proof automatic resetting device.

Background

The energy center governs the gas pipeline of Bao Steel institute for about 110 kilometers. When the gas flows in the pipeline, because the ambient temperature is often lower than the gas temperature, water of liquid substances contained in the gas is partially condensed and separated out due to saturation. Only condensed water of the water vapor and water brought out by the coal gas when the coal gas passes through the wet type washing system are separated out from the blast furnace gas pipeline; the coke oven gas pipeline contains steam, benzene, ammonia compounds, steam condensate of tar and naphthalene, and the like. In order to remove these condensates, drainage devices are provided on the gas lines. In order to prevent gas leakage when the drainage seal tank is in a failure state, as shown in fig. 1, a gas leakage prevention device is adopted, so that the safe operation of a gas pipeline is ensured, and potential safety hazards are eliminated. However, in the actual use process, the gas pressure in the gas pipeline fluctuates, and the gas is difficult to avoid entering the drainage seal tank, so that the misoperation phenomenon (the water level is normal, but the channel is cut off) of the anti-leakage device often occurs, at the moment, the anti-leakage device fails, and the gas pipeline cannot drain normally. The root causes of the leakage-proof device being unable to automatically reset are: when the water seal of the drainage seal tank is punctured by overpressure gas, a large amount of water in the low-pressure chamber of the drainage seal tank is taken out by the gas, meanwhile, the leakage-proof device is closed, and the gas is sealed in a cavity between the low-pressure chamber of the drainage seal tank and the leakage-proof device, as shown in figure 2, namely, the gas is blocked.

Disclosure of Invention

Technical problem to be solved

The invention aims to solve the defect that the automatic reset of the leakage-proof device in the prior art is realized after the leakage-proof device is closed, and provides the automatic reset device for the gas leakage-proof device, which realizes the automatic reset of the leakage-proof device through 'suffocating' in a clearing cavity and ensures the normal and safe operation of gas drainage.

(II) technical scheme

A coal gas leakage-proof automatic resetting device comprises a drainage seal tank, a secondary valve, a drainage pipeline, a downpipe, a leakage-proof device indicating rod and a drainage pipeline, wherein the downpipe is connected with the drainage seal tank through the secondary valve, and coal gas condensate water is filled in the drainage seal tank; drainage pipe links to each other with the drainage seal pot, installs on the drainage pipe and prevents leaking the device, prevents leaking the device and is equipped with and prevents leaking device indicator lever, drain pipe, its characterized in that: the anti-leakage device is provided with a bypass pipeline, the bypass pipeline is connected with one end of the electromagnetic valve, and the other end of the electromagnetic valve is connected with the energy storage tank; a floater is arranged in a tank body in the energy storage tank and connected with an exhaust pressure regulating mechanism, an exhaust sealing cover is arranged at the upper part of the energy storage tank and movably connected with the exhaust pressure regulating mechanism, an exhaust pipeline is arranged at the upper end of the energy storage tank, and an exhaust valve is arranged on the exhaust pipeline; and a proximity switch is arranged above an indication rod of the leakage-proof device.

According to an embodiment of the invention, the lower end of the energy storage tank is provided with a sewage draining outlet.

According to an embodiment of the present invention, the electromagnetic valve installed between the energy storage tank and the leakage preventing device is a two-position two-way electromagnetic valve.

According to an embodiment of the present invention, the two-position two-way solenoid valve is a DN40 type two-position two-way solenoid valve.

According to an embodiment of the invention, the DN40 type two-position two-way solenoid valve is a normally open type solenoid valve powered by a single dc 24V power supply.

According to an embodiment of the invention, the opening and closing of the solenoid valve is controlled by a time relay.

According to an embodiment of the present invention, the proximity switch is a proximity switch powered by a direct current 24V power supply, and is used for detecting and feeding back a status signal of the leakage prevention device.

(III) advantageous effects

By adopting the technical scheme, the automatic gas leakage prevention reset device is characterized in that an electromagnetic valve is arranged between the leakage prevention device and an energy storage tank, a proximity switch is arranged above an indication rod of the leakage prevention device, a time relay is used for controlling the electromagnetic valve, and the automatic reset of the leakage prevention device is realized by removing the 'suffocation' in a cavity; fundamentally solves the long-term problem of hindering the gas of hindering in the on-the-spot intracavity "feel out of the way" and lead to preventing leaking the device and become invalid, ensures the normal safe operation of coal gas drainage.

Drawings

In the present invention, like reference numerals refer to like features throughout, wherein:

fig. 1 is a structural schematic diagram of a gas leakage-proof device in a normal working state.

Fig. 2 is a schematic structural view of the gas leakage prevention device in a gas-holding state.

Fig. 3 is a schematic structural diagram of the automatic resetting device of the invention.

Description of reference numerals:

1. a water drainage sealing tank; 2. condensing the coal gas; 3. a secondary valve; 4. a water discharge pipeline; 5. a downpipe; 6. a leakage prevention device; 7. a low pressure chamber; 8. condensing water; 9. an anti-leakage device indicating rod; 10. a drain pipe; 11. a cavity; 12. a bypass conduit; 13. an electromagnetic valve; 14. an energy storage tank; 15. an exhaust seal cover; 16. an exhaust pressure regulating mechanism; 17. a float; 18. an exhaust valve; 19. a sewage draining outlet; 20. a proximity switch.

Detailed Description

The technical scheme of the invention is further explained by combining the drawings and the embodiment.

Referring to fig. 1, the conventional gas leakage preventing device includes a water discharge sealing tank 1, gas condensate 2, a secondary valve 3, a water discharge pipe 4, a downpipe 5, a leakage preventing device 6, a leakage preventing device indicating rod 9, and a water discharge pipe 10. The drainage seal tank 1 is filled with coal gas condensate water 2, and the downpipe 5 is connected with the drainage seal tank 1 through a secondary valve 3. Condensate in the gas of condensed water, benzene, ammonia compounds, tar and naphthalene enters the gas pipeline through the downpipe. The drainage pipeline 4 is connected with the drainage seal tank 1, a leakage-proof device 6 is arranged on the drainage pipeline 4, and the leakage-proof device 6 is provided with a leakage-proof device indicating rod 9 and a drainage pipe 10. Under the normal working state of the coal gas leakage-proof device, the leakage-proof device 6 is opened, and a large amount of condensed water 8 is filled in the drainage seal tank 1. When the gas leakage preventing device is in a 'suffocating' state, as shown in fig. 2, after the water seal of the drainage seal tank 1 is punctured by overpressure gas, a large amount of water in the low-pressure chamber of the drainage seal tank 1 is brought out by the gas, the indicating rod 9 of the leakage preventing device is jacked up, the leakage preventing device 6 is closed, and condensed water 8 in the low-pressure chamber of the drainage seal tank 1 is discharged through the drain pipe 10. The coal gas is sealed in the cavity 11 between the low-pressure chamber of the drainage seal tank and the leakage-proof device, and cannot be discharged, so that a 'gas-building' state is formed.

The normal processing flow is as follows: power is patrolled and examined regularly and is patrolled and examined gas drainage seal pot, finds that to prevent leaking the device and close the back, through manually operation's method, promptly: firstly closing a secondary valve at the downpipe → resetting the leakage-preventing device (eliminating 'suffocating') through manual operation → manually replenishing water to the drainage seal tank to the height of the safety water seal → putting the drainage seal tank into normal operation. The following consequences are brought by adopting the processing mode: if the anti-leakage device is not disposed timely after being closed, serious water accumulation of a gas pipeline can be caused, and potential safety hazards are generated.

Referring to fig. 3, the automatic gas leakage-preventing reset device comprises a water drainage seal tank 1, gas condensate water 2, a secondary valve 3, a water drainage pipeline 4, a downpipe 5, a leakage-preventing device 6, a low-pressure chamber 7, condensate water 8, a leakage-preventing device indicating rod 9, a water drainage pipe 10, a cavity 11, a bypass pipeline 12, an electromagnetic valve 13, an energy storage tank 14, an exhaust seal cover 15, an exhaust pressure regulating mechanism 16, a floater 17, an exhaust valve 18, a sewage outlet 19 and a proximity switch 20.

The downpipe 5 is connected with the drainage seal tank 1 through a secondary valve 3, and the drainage seal tank 1 is filled with coal gas condensate water 2; the drainage pipeline 4 is connected with the drainage seal tank 1, a leakage-proof device 6 is arranged on the drainage pipeline 4, and the leakage-proof device 6 is provided with a leakage-proof device indicating rod 9 and a drainage pipe 10; the leakage-proof device 6 is provided with a bypass pipeline 12, the bypass pipeline 12 is connected with one end of an electromagnetic valve 13, and the other end of the electromagnetic valve 13 is connected with an energy storage tank 14; a floater 17 is arranged in a tank body in the energy storage tank 14, the floater 17 is connected with an exhaust pressure regulating mechanism 16, an exhaust sealing cover 15 is arranged at the upper part of the energy storage tank 14, the exhaust sealing cover 15 is movably connected with the exhaust pressure regulating mechanism 16, an exhaust pipeline is arranged at the upper end of the energy storage tank 14, an exhaust valve 18 is arranged on the exhaust pipeline, and a sewage discharge outlet 19 is arranged at the lower end of the energy storage tank 14; above the leakage preventing means indication rod 9 of the leakage preventing means 6 is mounted a proximity switch 20.

The electromagnetic valve 13 arranged between the energy storage tank 14 and the leakage-proof device 6 is a two-position two-way electromagnetic valve, the two-position two-way electromagnetic valve is a DN40 type two-position two-way electromagnetic valve, and the DN40 type two-position two-way electromagnetic valve is a normally open type electromagnetic valve powered by a direct current 24V single power supply. The opening and closing of the electromagnetic valve is controlled by a time relay.

A proximity switch 20 for supplying power to a direct current 24V power supply is arranged above the indication rod 9 of the leakage-proof device and is used for detecting and feeding back a state signal of the leakage-proof device.