CN205579162U - Gas water seal system - Google Patents

Abstract

The utility model belongs to the technical field of gas thermal power generation, in particular to a gas water sealing system. It includes a funnel, a horizontal gas water seal and a water replenishment part for the horizontal gas water seal. The funnel is set at the bottom of the gas pipeline and communicates with the inner cavity of the gas pipeline. The bottom of the funnel communicates with the horizontal gas water seal through a pipeline. The pipeline There are at least two gate valves and sampling valves arranged in sequence from top to bottom, and the water supply part is connected with the horizontal gas water seal. The gas water seal system of the utility model solves unsafe accidents caused by frequent valve failures of the gas water seal, difficulty in checking the sewage of the gas water seal, waste water reuse and pollution problems, and the gas water seal is prone to failure or breakdown, causing unsafe conditions Accidents, gas water seals cannot collect moisture, impurities, sludge, and acidic media in the gas well, resulting in low efficiency. Insufficient contact between gas water seals and gas pipelines is easy to corrode and fall off, causing unsafe accidents and gas leakage .

Description

A gas water sealing system

【Technical field】

The utility model belongs to the technical field of gas thermal power generation, in particular to a gas water sealing system.

【Background technique】

As an available resource, gas is being fully exploited and utilized by people. However, gas water seals are likely to cause unsafe operation of gas water seals due to acid, impurities and other substances contained in gas, which may easily cause major unsafe accidents.

The gas water seal system in the prior art has the following disadvantages: unsafe accidents are caused by the frequent failure of the gas water seal; Unsafe accidents; the inefficiency caused by the inability of the gas water seal to collect moisture, impurities, sludge, and acidic media in the gas; insufficient contact between the gas water seal and the gas pipeline is easy to corrode and fall off, causing unsafe accidents and gas leakage.

【Content of invention】

In order to solve the shortcomings in the prior art, the purpose of this utility model is to provide a gas water seal system, which can make the gas water seal operate safely and effectively avoid unsafe accidents.

The purpose of this utility model is achieved through the following technical solutions:

A gas water seal system, comprising a funnel 2, a horizontal gas water seal 7 and a water replenishment part for the horizontal gas water seal 7, the funnel 2 is arranged at the bottom of the gas pipeline 1 and connected to the inner cavity of the gas pipeline 1 In communication, the outlet of the funnel 2 is connected with a pipeline 3, and the funnel 2 communicates with the horizontal gas water seal 7 through the pipeline 3, and the pipeline 3 is sequentially provided with a first gate valve 401, a second gate valve 402 and a sampling valve 6 from top to bottom, The water replenishment part is connected with the horizontal gas water seal 7 .

The middle part of the horizontal gas water seal 7 is provided with an isolation blocking plate 701, and the two ends are respectively set as a first detachable blocking plate 702 and a second detachable blocking plate 703. The isolation blocking plate 701 makes the horizontal gas water seal The inner cavity of 7 forms the first cavity 704 and the second cavity 705 which are isolated from each other, and the outside of the horizontal gas water seal) is provided with a connecting pipe 8, and one end of the connecting pipe 8 communicates with the first cavity 704, and the other end communicates with the first cavity 704. The second cavity 705 communicates.

The pipeline 3 communicates with the first cavity 704 of the horizontal gas water seal 7 , and the water supply part communicates with the second cavity 705 .

The water supply part includes a water supply pipe 9 and an overflow pipe 10, the water supply pipe communicates with the inner cavity of the horizontal gas water seal 7, one end of the overflow pipe 10 communicates with the water supply pipe 9, and the other end of the overflow pipe 10 extends To the trench 11, the trench 11 is connected to the circulating pool 12 through pipelines.

The water level in the water supply pipe 9 is higher than the water level in the overflow pipe 10, the water level in the overflow pipe 10 is higher than the height of the top of the connecting pipe 8, and the top of the connecting pipe 8 is higher than the position of the second gate valve 402 .

The first gate valve 401 and the second gate valve 402 are manual gate valves.

The funnel 2 is a trapezoidal funnel, and the trapezoidal funnel extends along the length direction of the gas pipeline 1 .

When the gas water seal system is disconnected, the lower part of the second gate valve 402 is provided with a blocking device 5 , which prevents gas from leaking from the second gate valve 402 .

The isolation blocking plate 701 and the detachable blocking plate (702, 703) are both corrosion-resistant plates.

The isolation blocking plate 701 and the detachable blocking plate (702, 703) are made of corrosion-resistant steel plates.

Compared with the prior art, the utility model has the following beneficial effects:

A gas water sealing system of the utility model can effectively increase the discharge area of harmful substances such as moisture, impurities and sludge in the inner cavity of the gas pipeline by arranging a funnel at the bottom of the gas pipeline, and the funnel is beneficial to the inner cavity of the gas pipeline. The discharge of harmful substances improves the discharge efficiency; by setting two gate valves on the pipeline connected to the funnel, it is convenient to disassemble the gas water seal; by setting the sampling valve below the lowest gate valve, it is beneficial for the sampling valve to replacement without causing gas leaks.

Further, the funnel in the utility model is a trapezoidal funnel, and the trapezoidal funnel can also extend along the length direction of the gas pipeline without changing the width, which is beneficial to increase the discharge of harmful substances in the gas pipeline by the funnel. area, improving emission efficiency.

Further, the water inlet port of the water supply pipe in the utility model is higher than the top height of the connecting pipe, which can prevent unsafe accidents caused by sudden changes in gas pressure.

Further, the utility model sets the two ends of the horizontal gas water seal as detachable blocking plates, and the detachable blocking plates allow the horizontal gas water seal to be disassembled and impurities in the water seal are cleaned.

Furthermore, the utility model can reduce the phenomenon of circulating water structure and save chemical reagents by recycling the overflow water to the circulating pool.

【Description of drawings】

Fig. 1 is the schematic diagram of the gas water sealing system of the present utility model;

Fig. 2 is a schematic diagram of a gas water sealing system of the prior art;

Fig. 3 is a schematic diagram of another gas water sealing system in the prior art.

Among them: 1-gas pipeline, 2-funnel, 3-pipeline, 301-first pipeline, 302-second pipeline, 4-gate valve, 401-first gate valve, 402-second gate valve, 5-blocking device, 6 -sampling valve, 7-horizontal gas water seal, 701-isolation blocking plate, 702-first removable blocking plate, 703 second removable blocking plate-, 704-first cavity, 705-second cavity, 8-communicating pipe, 9-filling pipe, 10-overflow pipe, 1001-overflow tank, 11-ditch, 12 circulating pool, 13-outlet, 14-partition.

【detailed description】

Below in conjunction with accompanying drawing, the utility model will be further described.

As shown in Figure 1, it is a schematic diagram of the gas water sealing system of the present utility model, the funnel 2 is welded and fixed on the bottom of the gas pipeline 1, the funnel 2 is a trapezoidal funnel, along the length direction of the gas pipeline 1, the length of the trapezoidal funnel is set to 200mm;

One end of the pipeline 3 is connected to the outlet of the funnel 2, the other end of the pipeline 3 is connected to the horizontal gas water seal 7, and the first gate valve 401, the second gate valve 402 and the sampling valve 6 are sequentially installed on the pipeline 3 from top to bottom, The first gate valve 401 and the second gate valve 402 are both manual gate valves. The first gate valve 401 and the second gate valve 402 are respectively installed at the upper and lower ends of the first pipeline 301. The upper end of the second pipeline 302 is connected to the second gate valve 402, and the other end Connect with the horizontal gas water seal 7 and communicate with the inner cavity of the horizontal gas water seal 7, and install the sampling valve 6 on the second pipeline 302;

The middle part of the horizontal gas water seal 7 is provided with an isolation blocking plate 701, and the two ends are respectively provided with a first detachable blocking plate 702 and a second detachable blocking plate 703. The isolation blocking plate 701 makes the horizontal gas water seal 7 The cavity forms a first cavity 704 and a second cavity 705, the first cavity 704 communicates with the second cavity 705 through the communication pipe 8, and the second pipeline 302 communicates with the first cavity 704; wherein, the isolation blocking plate 701 The materials of the detachable blocking plates (702, 703) are corrosion-resistant steel plates;

Connect the outlet port of the water supply pipe 9 with the second cavity 705, connect one end of the overflow pipe 10 with the water supply pipe 9, and connect the other end to the trench 11, and connect the trench 11 with the circulating pool 12, wherein the overflow pipe An overflow tank 1001 is also provided on the pipeline of 10 .

In the gas water sealing system of the present utility model, the first gate valve 401 is installed at the place 0.2m to 0.8m below the funnel 2, and the second gate valve 402 is installed at the place 0.8m to 1.2m away from the ground of the horizontal gas water seal 7; The water level in 9 is higher than the water level in the overflow pipe 10, the water level in the overflow pipe 10 is higher than the height of the top of the connecting pipe 8, the connecting pipe is an inverted U-shaped pipe, and the water level of the replenishing pipe 9 is higher than the connecting pipe 8 is about 400mm from the top, and the top of the connecting pipe 8 is higher than the position where the sampling valve 6 and the second gate valve 402 are installed.

When the gas water sealing system of the present utility model is disassembled, a blocking plate device 5 is provided at the outlet of the second gate valve 402 to prevent gas from leaking from the second gate valve 402 .

As shown in Figures 1 to 3, a gas water sealing system of the present invention has the following advantages compared with the existing gas water sealing system:

(1) As shown in Figure 2 and Figure 3, the existing gas water seal system directly connects the pipeline 3 with the gas pipeline 1, and because the cross-sectional area of the pipeline 3 is limited, it is not easy to collect moisture and impurities in the gas pipeline 1 , sludge, acidic medium, and the insufficient contact between pipeline 3 and gas pipeline 1 is easy to corrode and fall off, causing unsafe accidents and gas leakage;

As shown in Figure 1, the utility model is provided with a funnel 2 at the bottom of the gas pipeline 1, and then the pipeline 3 is connected to the outlet of the funnel 2, and the funnel 2 is a trapezoidal funnel, which can well remove moisture, impurities, and pollutants in the gas. Collect mud and acidic medium; it can fully contact the gas pipeline 1 to ensure safety and reliability, and prevent the pipeline 3 from falling off.

(2) The utility model installs two manual gate valves on the pipeline 3 connected to the lower part of the trapezoidal funnel to facilitate decoupling of the gas water seal. Gas content and judge whether the second gate valve 402 is closed in place, if it is closed in place, it will be decoupled, if the second gate valve 402 cannot be completely closed, then close the first gate valve 401, and then perform decoupling operation; and in the prior art One gate valve 4 is adopted, if the gate valve 4 breaks down, the gas water seal cannot be disassembled for inspection, and the utility model uses at least two gate valves (401, 402) to overcome the aforementioned shortcomings; the utility model mainly operates the second For the gate valve 402, if the second gate valve 402 fails, the first gate valve can be operated again, so that the maintenance and replacement of the second gate valve 402 can be continued. However, there is only one gate valve 4 in the prior art. Therefore, failure of the gate valve 4 will cause difficulty. To overhaul and replace it, it is necessary to completely stop the equipment, which is time-consuming and labor-intensive, and affects the entire process system.

(3) As shown in Figure 1, the position of the second gate valve 402 in the utility model is lower than the position of the connecting pipe 8 top, therefore, in the course of work, can make the material such as the sludge in the gas be soaked in water for a long time and Maintaining a soft state ensures the switching of the second gate valve 402 and the sampling valve 6 and is not easily damaged;

As shown in Figure 2 and Figure 3, the gate valve and sampling valve of the existing gas water seal are all installed on the upper part of the gas water seal, which is higher than the water level of the gas water seal (as shown in Figure 2) or higher than the top position of the connecting pipe 8 High, therefore, the existing gas water sealing system is easy to cause valve damage; in the existing gas water sealing system, a gate valve 4 is designed on the pipeline 3, so the gate valve 4 is not easy to close and break due to long-term impurities. Cause unsafe accidents and gas leakage.

(4) As shown in Figure 1, the sampling valve 6 of the present utility model is at the bottom of the second gate valve 402, therefore, the sampling valve 6 can be safely and reliably replaced conveniently;

As shown in Fig. 2 and Fig. 3, in the existing gas water seal system, the sampling valve 6 is arranged above the gate valve 4, so it is not safe, and if the gate valve 4 is damaged, it is inconvenient to replace, and it is easy to cause gas leakage.

(5) As shown in Figure 1, in the utility model, the two end faces of the horizontal gas water seal 7 are designed as detachable anti-corrosion blocking plates, so the detachable blocking plates (702, 703) can be easily disassembled to clean the water Seal sludge impurities;

As shown in Figure 2 and Figure 3, in the existing gas water seal system, the sewage outlet 13 of the gas water seal drain is generally designed as an inspection sewage outlet of about DN150-DN200, which is not convenient for personnel to clean the gas water seal, and is easy Corrosion and leakage of gas cause unsafe accidents.

(6) As shown in Figure 1, in the utility model, the sewage and overflow water of the gas water seal flow into the trench 11 to the circulating pool 12, because the sewage and overflow water of the gas water seal contain acidic medium, so the circulating pool can be neutralized Alkaline substances in 12 can reduce the phenomenon of circulating water structure and save chemicals;

As shown in Fig. 2 and Fig. 3, the existing gas water sealing sewage and overflow water flow into the trench, which is wasted, corrodes the trench and easily causes pollution.

(7) As shown in Figure 1, in the utility model, the water inlet port of the water supply pipe 9 of the gas water seal is installed on the water seal body about 400 mm from the top of the connecting pipe 8, so as to ensure the safe and reliable operation of the gas water seal;

As shown in Figure 2 and Figure 3, the existing water seal is installed on the body of the water seal or flush with the top of the connecting pipe 8. When the gas pressure changes suddenly, it will easily cause a large amount of water overflow in the water seal, resulting in easy gas water seal. failure or breakdown, causing unsafe accidents.

Therefore the gas water sealing system of the present utility model:

(1) Solve unsafe accidents caused by frequent valve failures of gas water seals.

(2) Solve the problem of difficult inspection of gas water seal blowdown.

(3) Solve waste water reuse and pollution problems.

(4) Solve that the gas water seal is prone to failure or breakdown, causing unsafe accidents.

(5) Solve the problem of inefficiency caused by the inability of the gas water seal to collect moisture, impurities, sludge, and acidic media in the gas.

(6) To solve the problem of insufficient contact between the gas water seal and the gas pipeline, which is easy to corrode and fall off, causing unsafe accidents and gas leakage.

Claims (9)

1. a water seal for coal gas system, it is characterized in that, including funnel (2), horizontal water seal for coal gas (7) and be the moisturizing part of horizontal water seal for coal gas (7) moisturizing, described funnel (2) is arranged on the bottom of gas piping (1) and communicates with the inner chamber of gas piping (1), in the outlet of funnel (2), connection has pipeline (3), funnel (2) is connected with horizontal water seal for coal gas (7) by pipeline (3), the first gate valve (401) it is disposed with from top to bottom on pipeline (3), second gate valve (402) and sampling valve (6), described moisturizing part is connected with horizontal water seal for coal gas (7).

A kind of water seal for coal gas system the most according to claim 1, it is characterized in that, the middle part of described horizontal water seal for coal gas (7) is provided with isolation closure plate (701), both ends are respectively set to the first detachable blocking board (702) and the second detachable blocking board (703), isolation closure plate (701) makes the inner chamber of horizontal water seal for coal gas (7) form mutually isolated the first cavity (704) and the second cavity (705), the outside of horizontal water seal for coal gas (7) is provided with communicating pipe (8), one end of communicating pipe (8) connects with the first cavity (704), the other end and the second cavity (705) connection.

A kind of water seal for coal gas system the most according to claim 2, it is characterized in that, described pipeline (3) connects with first cavity (704) of horizontal water seal for coal gas (7), and described moisturizing part communicates with the second cavity (705).

A kind of water seal for coal gas system the most according to claim 2, it is characterized in that, described moisturizing part includes filling pipe (9) and overflow pipe (10), filling pipe (9) and the intracavity inter-connection of horizontal water seal for coal gas (7), one end of overflow pipe (10) communicates with filling pipe (9), the other end of overflow pipe (10) extends to trench (11), and trench (11) is connected with circulating water pool (12) by pipeline.

A kind of water seal for coal gas system the most according to claim 4, it is characterized in that, the described water level in filling pipe (9) is higher than the water level in overflow pipe (10), water level in overflow pipe (10) is higher than the height at the top of communicating pipe (8), and the tip position of communicating pipe (8) is higher than the position of the second gate valve (402).

A kind of water seal for coal gas system the most according to claim 1, it is characterised in that described the first gate valve (401) selects hand sluice valve with the second gate valve (402).

A kind of water seal for coal gas system the most according to claim 1, it is characterised in that trapezoidal funnel selected by described funnel (2), and trapezoidal funnel is extended along the length direction of gas piping (1).

A kind of water seal for coal gas system the most according to claim 1, it is characterized in that, described water seal for coal gas system is when off-the-line, and the bottom of the second gate valve (402) arranges closure plate device (5), and closure plate device (5) prevents coal gas from revealing at the second gate valve 402.

A kind of water seal for coal gas system the most according to claim 2, it is characterised in that described isolation closure plate (701) and detachable blocking board (702,703) are steel plate.