CN214840153U

CN214840153U - Front-guiding type anti-leakage continuous-operation gas drainer

Info

Publication number: CN214840153U
Application number: CN202121192211.1U
Authority: CN
Inventors: 何浩
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-05-31
Filing date: 2021-05-31
Publication date: 2021-11-23
Anticipated expiration: 2031-05-31

Abstract

The utility model relates to a preceding formula is prevented leaking continuous operation's coal gas drainer, prevent leaking the device including coal gas drainer body and coal gas, a serial communication port, coal gas is prevented leaking the device and is included the casing that flange has at both ends, pneumatic check valve, coupling hose for the excessive pressure adjustment, elbow and anti-recoil subassembly, the coupling flange at casing both ends respectively with control flap's coupling flange and the coupling flange sealing connection on main drain pipe upper portion, it has the air inlet to open on the lateral wall of casing, the lower part is equipped with the gas vent, coupling hose for the excessive pressure adjustment's air inlet end inserts in the drainer casing, fix on the first order water seal chamber roof that corresponds, the exhaust end of coupling hose for the excessive pressure adjustment passes the air inlet and is linked together through the elbow and with anti-recoil subassembly. The utility model has the advantages that: the coal gas leakage-proof device is arranged in a front-guiding mode, so that the overpressure coal gas is released in the first-stage water sealing chamber, the leakage-free continuous circulating work of the drainer is realized, the decontamination is convenient, the frequent maintenance is reduced, and the use efficiency is improved.

Description

Front-guiding type anti-leakage continuous-operation gas drainer

Technical Field

The utility model relates to a gas piping drainage technology field especially relates to a preceding formula prevents leaking continuous operation's coal gas drainer.

Background

Due to the purification process, purification effect and other reasons, the byproduct gas of a metallurgical enterprise is easy to form condensate in a gas pipeline to be accumulated at the lower part of the pipeline in the conveying process, and if the condensate is discharged in time, the pipeline corrosion speed is accelerated, the pressure fluctuation of a pipe network is large and other adverse effects are caused. However, the actual working pressure of the gas delivery line may fluctuate abnormally, which may instantaneously exceed the rated working pressure, and this fluctuation may cause safety hazards and environmental pollution.

In order to solve the problems of potential safety hazard and environmental pollution caused by abnormal fluctuation due to overpressure, a water drainer is generally arranged on a gas pipeline every 100-150 meters.

The existing leakage-proof coal gas drainer mainly comprises a coal gas drainer body and a coal gas leakage-proof device, wherein the coal gas drainer body mainly comprises a main drainage pipe and N water-seal chambers which are mutually communicated with the main drainage pipe, the main drainage pipe is connected with a coal gas main pipeline, the coal gas leakage-proof devices are arranged at the tail end of a drainage port, when the effective water level of the drainer is abnormally reduced due to the pressure fluctuation of a coal gas pipe network or other reasons to cause coal gas leakage, the leakage of the coal gas can be effectively prevented through the coal gas leakage-proof device, and the occurrence of serious accidents such as coal gas ignition, explosion, poisoning and the like is prevented. The existing gas leakage-proof device mainly comprises a floating ball type leakage-proof device, a flap type leakage-proof device and an electronic nose leakage-detecting type leakage-proof device.

However, since these leak-proof devices are arranged at the rear end of the drain opening, for example: the float-ball type leakage-proof device is characterized by that when the gas drainer is in the course of operation, and when the overpressure gas is passed through the last water-sealing chamber, the gas is retained (the gas in the closed container is risen to occupy space principle, and the water is extruded from lower portion), and the water is discharged, so that the water level of last chamber of the drainer is reduced, and the float ball in the leakage-proof mechanism is fallen, and at this moment, the cover plate can be used for blocking and sealing leakage-proof pipe so as to attain the goal of preventing gas leakage.

And simultaneously, automatically or manually closing (locking) the water outlet of the gas drainer to stop the operation of the gas drainer. Although the mode ensures safety to a certain extent, the operation of the gas drainer is also interrupted, and even the operation of the whole gas pipe network can be influenced. When the gas drainer needs to be restored to work, manual treatment on site is also needed. Meanwhile, the gas which punctures the water seal still remains in the gas drainer, the gas floats on the upper part of the water seal cavity, the treatment and recovery are troublesome, the phenomenon of on-site residual gas leakage is easy to occur, and the safety problem and the environment pollution are caused.

In addition, because the water drained by the drainer contains impurities and dirt, the lower part of the outer side surface of the drainer is provided with a sewage discharge hand hole, and the lower edge of the sewage discharge hand hole is higher than the bottom plate of the drainer, so that the height difference exists. This brings trouble to the work of decontaminating of drainer, is difficult to decontaminate totally. Therefore, maintenance cycles are more frequent; if the dirt is accumulated too much, the drainage of the drainer is affected, and the water seal height of the drainer is reduced. Thereby causing the drainer to fail to work normally and even causing safety accidents.

Disclosure of Invention

An object of the utility model is to overcome above-mentioned not enough, provide a preceding formula and prevent leaking continuous operation's coal gas drainer.

The utility model discloses a coal gas drainer of continuous operation is prevented leaking to leading formula, prevent leaking the device including coal gas drainer body and coal gas, the coal gas drainer body includes the drainer casing, set up N water seal rooms, main drain pipe and a plurality of water seal pipe of intercommunication each other in the drainer casing, main drain pipe sets up in the first order water seal room, be equipped with a water seal pipe in second grade to last order water seal room respectively, the last port and the preceding one-level water seal room of each water seal pipe link up, lower extreme suspension opening are equipped with control flap at the junction of main drain pipe and coal gas main line, be equipped with blowdown hand hole in drainer casing lateral surface lower part, hold the water that is used for shutoff coal gas in the drainer casing, a serial communication port, coal gas prevent leaking the device include that both ends have flange's casing, pneumatic one-way check valve, excessive pressure adjustment coupling hose, The connecting flanges at the two ends of the shell are respectively connected with the connecting flange of the control valve and the connecting flange at the upper part of the main drainage pipe in a sealing manner, the side wall of the shell is provided with an air inlet, the lower part of the shell is provided with an air outlet, the air inlet end of the connecting hose for overpressure adjustment is inserted into the shell of the drainer and fixed on the top wall of the corresponding first-stage water sealing chamber, and the air outlet end of the connecting hose for overpressure adjustment penetrates through the air inlet and is communicated with the anti-recoil assembly through the elbow.

Preferably, the anti-recoil assembly comprises a joint main body, an anti-recoil silica gel core protective sleeve and an anti-recoil silica gel core, wherein the upper end of the joint main body is fixedly connected with the elbow, the anti-recoil silica gel core protective sleeve is sleeved on the joint main body, the anti-recoil silica gel core is arranged between the anti-recoil silica gel core protective sleeve and the joint main body, the anti-recoil silica gel core is sleeved on the joint main body, and the lower end of the anti-recoil silica gel core is an elastic soft flat cylinder.

Preferably, the bottom of the drainer shell is provided with a thermal insulation material and an electric tracing device.

Preferably, the lower edge of the sewage draining hand hole is arranged lower than the bottom plane of the water sealing chamber.

The utility model has the advantages that:

1. after the coal gas enters the coal gas drainer, the coal gas breaks through the water seal beyond the designed pressure and enters the first water seal chamber, the gas floats upwards above the liquid level of the first water seal chamber, at the moment, a pneumatic one-way check valve of a front coal gas leakage prevention device arranged at the upper part of the first-stage water seal chamber is opened (because the starting pressure is far lower than the subsequent water seal resistance), the over-pressure coal gas enters the coal gas leakage prevention device from the top of the water seal chamber where the main drainage pipe is located, and returns to the coal gas conveying pipeline, so that the leakage-free continuous circulating operation of the drainer is realized. The traditional coal gas drainer is a way that overpressure gas is not released at the moment, and can only be suppressed to a certain degree at density and pressure, and the overpressure gas is mixed with liquid and discharged to an outlet, so that the problems of safety and environmental protection are caused.

2. Because the utility model discloses bottom at the drainer casing is equipped with insulation material and electric heat tracing device, is favorable to the drainer to prevent frostbite in the area winter in the north and keeps warm, and it is convenient to maintain during the desilting.

3. Under the condition that the external installation size and the structure of the gas drainer are unchanged, the bottom of the water seal chamber of the drainer is lifted upwards, the height difference between the lower edge of the sewage discharge hand hole of the gas drainer and the bottom of the water seal chamber of the gas drainer is reversed (namely the bottom of the drainer cavity is higher than the lower edge of the sewage discharge hand hole), the gas drainer is convenient to clean, frequent maintenance is reduced, and the use efficiency is improved.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic structural view of the gas leakage preventing device of the present invention.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings.

As shown in figures 1 and 2, the utility model discloses a coal gas drainer of continuous operation is prevented leaking to preceding formula, prevent leaking device 6 including coal gas drainer body and coal gas, coal gas drainer body includes drainer casing 1, set up N water seal rooms that communicate each other in drainer casing 1, main drain pipe 8 and a plurality of water seal pipe 3, main drain pipe 8 sets up in first order water seal room 2, be equipped with a water seal pipe 3 respectively in second grade to last order water seal room, the last port of each water seal pipe is link up with preceding one-level water seal room, lower extreme suspension opening, be equipped with control flap 7 in the junction of main drain pipe 8 and coal gas main line, be equipped with blowdown hand hole 12 in drainer casing 1 lateral surface lower part, hold the water that is used for shutoff coal gas in drainer casing 1, a serial communication port, coal gas prevent leaking device 6 include that both ends have flange's casing 61, prevent leaking device 6, The pneumatic one-way check valve 63, the connecting hose 62 for overpressure adjustment, the elbow 64 and the anti-recoil assembly are arranged, connecting flanges at two ends of the shell 61 are respectively connected with a connecting flange of the control valve 7 and a connecting flange at the upper part of the main drainage pipe 8 in a sealing mode, an air inlet is formed in the side wall of the shell 61, an air outlet is formed in the lower part of the shell, the air inlet end of the connecting hose 62 for overpressure adjustment is inserted into the drainer shell 1 and fixed to the top wall of the corresponding first-stage water seal chamber 2, and the air outlet end of the connecting hose 62 for overpressure adjustment penetrates through the air inlet and is communicated with the anti-recoil assembly through the elbow 64.

Anti-recoil subassembly including connecting main part 65, preventing recoil silica gel core protective case 66 and preventing recoil silica gel core 67, joint main part 65 upper end and elbow 64 fixed connection, prevent that recoil silica gel core protective case 66 cover is established on connecting main part 65, prevent that recoil silica gel core 67 sets up preventing recoil silica gel core protective case 66 and connecting between 65, prevent that the upper end of recoil silica gel core 67 cup joints on connecting main part 65, the lower extreme is elasticity software flat section of thick bamboo 68.

Drainer casing 1's bottom be equipped with insulation material 10 and electric heat tracing device 9, be equipped with insulation material and electric heat tracing device in the bottom of drainer casing, be favorable to the drainer to prevent frostbite in the area winter in the north and keep warm, it is convenient to maintain during the desilting.

The lower edge of the sewage discharge hand hole 11 is lower than the plane setting at the bottom of the water seal chamber. Under the condition that the external installation size and the structure of the gas drainer are unchanged, the bottom of the water seal chamber of the drainer is lifted upwards, the height difference between the lower edge of the sewage discharge hand hole of the gas drainer and the bottom of the water seal chamber of the gas drainer is reversed (namely the bottom of the drainer cavity is higher than the lower edge of the sewage discharge hand hole), the gas drainer is convenient to clean, frequent maintenance is reduced, and the use efficiency is improved.

The operation of the gas drainer leakage preventing device according to the exemplary embodiment of the present invention will be described.

After gas enters the gas drainer, when pressure in the gas pipeline fluctuates and rises, the gas breaks through the water seal and enters the first water seal chamber beyond the designed pressure, so that the water level of the first water seal chamber is reduced, at the moment, the pneumatic one-way check valve of the gas leakage prevention device arranged at the upper part of the first-stage water seal chamber is opened, the overpressure gas enters the gas leakage prevention device from the top of the main drainage pipe bin and returns to the gas conveying pipeline, and the leakage-free continuous circulating work of the drainer is realized. The traditional coal gas drainer is a way that overpressure gas is not released at the moment, and can only be suppressed to a certain degree at density and pressure, and the overpressure gas is mixed with liquid and discharged to an outlet, so that the problems of safety and environmental protection are caused.

When the pressure in the gas pipeline is recovered to be normal, the elastic soft flat cylinder at the lower end of the anti-recoil component is closed, the pneumatic one-way check valve is automatically closed, so that the water seal of the first water seal chamber 2 is recovered to be normal, a passage is formed, water in the first water seal chamber 2 enters the water seal pipe 3 and enters the low-pressure side of the gas drainer, and then drainage is recovered to be normal.

In the figure 5, an outlet drain pipe is arranged, and the discharged water is merged into the water sealing chamber and is discharged backwards step by step.

Claims

1. A leading type gas drainer capable of preventing leakage and continuously operating comprises a gas drainer body and a gas leakage preventing device, wherein the gas drainer body comprises a drainer shell, N water sealing chambers, a main drainage pipe and a plurality of water sealing pipes which are arranged in the drainer shell and are communicated with each other, the main drainage pipe is arranged in a first-stage water sealing chamber, the water sealing pipes are respectively arranged in a second-stage to a last-stage water sealing chamber, the upper end port of each water sealing pipe is communicated with the previous-stage water sealing chamber, the lower end of each water sealing pipe is provided with a suspension opening, a control valve is mainly arranged at the joint of the main drainage pipe and a gas main pipeline, a sewage discharge hand hole is arranged at the lower part of the outer side surface of the drainer shell, and water for plugging gas is contained in the drainer shell, and the gas leakage preventing device is characterized by comprising a shell with connecting flanges at two ends, a pneumatic one-way valve, a connecting hose for overpressure adjustment, an elbow and an anti-flushing component, the connecting flanges at the two ends of the shell are respectively in sealing connection with the connecting flange of the control valve and the connecting flange at the upper part of the main drainage pipe, an air inlet is formed in the side wall of the shell, an air outlet is formed in the lower part of the shell, the air inlet end of the connecting hose for overpressure adjustment is inserted into the shell of the drainage device and fixed on the top wall of the corresponding first-stage water sealing chamber, and the air outlet end of the connecting hose for overpressure adjustment penetrates through the air inlet and is communicated with the anti-recoil assembly through an elbow.

2. The front-guiding leakage-preventing continuous-operation gas drainer as claimed in claim 1, wherein the anti-recoil assembly comprises a connector main body, an anti-recoil silica gel core protective sleeve and an anti-recoil silica gel core, the upper end of the connector main body is fixedly connected with the elbow, the anti-recoil silica gel core protective sleeve is sleeved on the connector main body, the anti-recoil silica gel core is arranged between the anti-recoil silica gel core protective sleeve and the connector main body, the anti-recoil silica gel core is sleeved on the connector main body, and the lower end of the anti-recoil silica gel core is an elastic soft flat cylinder.

3. A lead-in leak-proof continuously operating gas drainer as claimed in claim 1, wherein insulation and electrical tracing means are provided at the bottom of the drainer housing.

4. A lead-in leak-proof continuously operating gas drainer as claimed in claim 1, wherein the lower edge of said drain hand hole is disposed below the bottom plane of the water seal chamber.