CN215335806U

CN215335806U - Hydrogen pipeline drainage device

Info

Publication number: CN215335806U
Application number: CN202121227254.9U
Authority: CN
Inventors: 李江华; 王俊斌; 骆杨庆; 马元腾; 王亮; 刘王保; 朱晋坤; 李斌; 杨忠新; 朱克华
Original assignee: Fengyi Surfactant Lianyungang Co ltd
Current assignee: Fengyi Surfactant Lianyungang Co ltd
Priority date: 2021-06-02
Filing date: 2021-06-02
Publication date: 2021-12-28
Anticipated expiration: 2031-06-02

Abstract

The utility model discloses a hydrogen pipeline drainage device, which comprises: the water discharge pipeline is connected to the hydrogen conveying pipeline and is provided with a valve for opening and closing the water discharge pipeline; the water drainage and gas barrier assembly is connected to the water drainage pipeline and is used for blocking hydrogen and discharging water flow; the gas-water separation component is arranged at the downstream of the water drainage and air blocking component and is used for separating hydrogen and water flow from the water drainage and air blocking component, the gas-water separation component comprises a container, the upper part of the container is provided with a water inlet and an air outlet, the lower part of the container is provided with a water outlet, and a drainage pipeline enters the container through the water inlet and extends to the inner bottom of the container. Most hydrogen is by separation backward flow to hydrogen pipeline, and rivers can discharge to avoid the defect that the cold weather frost crack pipeline of rivers is leaded to the retention rivers in the hydrogen pipeline, the few part hydrogen of smuggleing secretly in the rivers is retrieved by the separation of gas-water separation subassembly, avoids hydrogen direct leakage to external environment in, causes energy waste and potential safety hazard.

Description

Hydrogen pipeline drainage device

Technical Field

The utility model relates to the technical field of chemical production auxiliary equipment, in particular to a hydrogen pipeline drainage device.

Background

The electrolysis of sodium chloride solutions in chlor-alkali plants produces hydrogen and chlorine as well as sodium hydroxide solutions. The hydrogen generated by electrolysis carries a small amount of water, and the hydrogen is accumulated at the bottom in the pipeline, so that the water in the hydrogen pipeline needs to be discharged for many times every day, or the normal production of downstream factories is influenced. Especially in winter, the risk of the freeze-up of the drainage pipeline to cause the stop can occur if the drainage is not timely carried out. If the hydrogen drainage valve is normally opened, although the anti-freezing effect can be achieved, hydrogen can be continuously discharged from the vent, and great potential safety hazards exist, so that the design of the automatic drainage device capable of preventing freezing and hydrogen leakage is particularly necessary.

SUMMERY OF THE UTILITY MODEL

In order to solve the above technical problems, an object of the present invention is to provide a hydrogen pipe drainage apparatus capable of preventing freezing and hydrogen leakage.

Therefore, the utility model provides a hydrogen pipeline drainage device, which comprises:

the water discharge pipeline is connected to the hydrogen conveying pipeline and is provided with a valve for opening and closing the water discharge pipeline;

the water drainage and gas barrier assembly is connected to the water drainage pipeline and is used for blocking hydrogen and discharging water flow;

a gas-water separation component which is arranged at the downstream of the drainage gas barrier component and is used for separating hydrogen and water flow from the drainage gas barrier component, the gas-water separation component comprises a container, the upper part of the container is provided with a water inlet and an air outlet, the lower part of the container is provided with a water outlet,

the drainage pipeline enters the container through the water inlet and extends to the inner bottom of the container.

Preferably, the drain choke assembly is a trap.

Preferably, the exhaust port is connected with an evacuation pipeline communicated with the external environment, and a flame arrester is arranged on the evacuation pipeline.

Preferably, the water outlet is provided with an overflow pipe, and the overflow pipe is provided with a water sealing section extending upwards.

Preferably, the mouth end of the overflow pipe is higher than the mouth end of the drainage pipe extending to the bottom in the container.

Preferably, the overflow tube is in the shape of an inverted U.

Preferably, the valve on the drain line is a manual valve.

Preferably, the container is of a can construction.

Compared with the prior art, the utility model has the following advantages:

1. by arranging the water drainage and air blocking assembly, most hydrogen is prevented from flowing back to the hydrogen conveying pipeline, and water flow is discharged, so that the defect that the pipeline is frozen and cracked in winter due to water flow retained in the hydrogen conveying pipeline is overcome;

2. through setting up the gas-water separation subassembly to retrieve rivers, and retrieve the separation of a small part of hydrogen that smugglies secretly in the rivers, avoid hydrogen direct leakage to external environment in, cause energy waste and potential safety hazard.

Drawings

FIG. 1 is a schematic structural view of the present invention;

wherein the drawings are illustrated as follows:

1. a hydrogen gas delivery conduit; 2. a water discharge pipeline; 21. a valve; 3. a water drain choke assembly; 4. a gas-water separation component; 41. a container; 411. a water inlet; 412. an exhaust port; 413. a water outlet; 42. emptying the pipeline; 43. a flame arrestor; 44. an overflow pipe; 441. A water seal section.

Detailed Description

It is easily understood that, according to the technical solution of the present invention, a plurality of alternative structures and implementations can be proposed by those skilled in the art without changing the spirit of the present invention. Therefore, the following detailed description and the accompanying drawings are merely illustrative of the technical aspects of the present invention, and should not be construed as all of the present invention or as limitations or limitations on the technical aspects of the present invention.

The terms upper, lower, upstream, downstream, top, bottom, inside, outside, in, out and the like in the directional terms referred to in the specification are defined relative to the configurations shown in the drawings, and are relative concepts, and thus may be changed according to the position and the use state thereof. Therefore, these and other directional terms should not be construed as limiting terms.

As shown in figure 1, the hydrogen pipeline drainage device comprises a drainage pipeline 2, a drainage gas-blocking component 3 and a gas-water separation component 4.

The water discharge pipeline 2 is connected to the hydrogen gas delivery pipeline 1, and a valve 21 for opening and closing the water discharge pipeline 2 is arranged on the water discharge pipeline 2. In a particular embodiment, the valve 21 on the drain line 2 may be a manual valve. Other control valves, such as solenoid valves, are also possible.

The drain choke assembly 3 is connected to the drain pipe 2 and serves to block the hydrogen and discharge the condensed water flow. In a particular embodiment, the drain choke assembly 3 may be a trap.

The gas-water separation assembly 4 is disposed downstream of the drain choke assembly 3 and is used to separate the hydrogen gas and the water stream from the drain choke assembly 3.

Specifically, the gas-water separation assembly 4 comprises a container 41, and the container 41 is of a tank structure. The container 41 is provided with a water inlet 411 and an air outlet 412 at the upper part and a water outlet 413 at the lower part, and the water outlet pipe 2 enters the container 41 through the water inlet 411 and extends to the inner bottom of the container 41. An evacuation pipeline 42 communicated with the external environment is connected to the exhaust port 412, and a flame arrester 43 is arranged on the evacuation pipeline 42. An overflow pipe 44 is arranged at the water outlet 413, and the overflow pipe 44 is provided with a water sealing section 441 extending upwards. The mouth end of the overflow pipe 44 is higher than the mouth end of the drain pipe 2 extending to the bottom in the vessel 41. The overflow tube 44 is in the form of an inverted U.

The working principle of the utility model is realized as follows: condensed water in the hydrogen conveying pipeline 1 flows through the drainage pipeline 2, the valve 21 is opened, most hydrogen is blocked and flows back into the hydrogen conveying pipeline 1 through the gas blocking and drainage of the drainage valve, the condensed water flows into the container 41 through the drainage valve, a small amount of hydrogen is clamped in the container 41, and the hydrogen is discharged into the emptying pipeline from the exhaust port 412 at the top of the container 41 and is discharged into the external environment through the flame arrester 43. The water in the container 41 is discharged through the overflow pipe 44, and a water seal for isolating gas is formed at the water seal section 441, so that the hydrogen is effectively prevented from directly leaking to the external atmospheric environment, and potential safety hazards are caused. The device can realize that the stagnant water or the comdenstion water in the hydrogen pipeline is discharged safely, avoids the defect of cold winter weather frost crack pipeline.

The technical scope of the present application is not limited to the contents in the above description, and those skilled in the art can make various changes and modifications to the above embodiments without departing from the technical spirit of the present application, and these changes and modifications should fall within the protective scope of the present application.

Claims

1. A hydrogen gas piping drainage device, comprising:

the water draining pipeline (2) is connected to the hydrogen conveying pipeline (1), and a valve (21) for opening and closing the water draining pipeline (2) is arranged on the water draining pipeline (2);

the water drainage and gas barrier assembly (3) is connected to the water drainage pipeline (2) and is used for blocking hydrogen and discharging water flow;

gas-water separation subassembly (4), establish the low reaches of drainage choke subassembly (3) and be used for the separation to come from the hydrogen and the rivers of drainage choke subassembly (3), gas-water separation subassembly (4) include a container (41), container (41) upper portion is equipped with water inlet (411) and gas vent (412), the lower part is equipped with outlet (413), drainage pipe (2) by water inlet (411) get into in container (41) and extend to the interior bottom of container (41).

2. The hydrogen pipeline drainage device according to claim 1, wherein the drainage choke assembly (3) is a trap.

3. The hydrogen pipeline drainage device as claimed in claim 1, wherein a drain pipeline (42) communicated with the external environment is connected to the exhaust port (412), and a flame arrester (43) is arranged on the drain pipeline (42).

4. The hydrogen pipeline drainage device according to claim 1, characterized in that an overflow pipe (44) is arranged at the drainage port (413), and the overflow pipe (44) is provided with a water sealing section (441) extending upwards.

5. The hydrogen pipeline drainage device according to claim 4, wherein the mouth end of the overflow pipe (44) is higher than the mouth end of the drainage pipeline (2) extending to the bottom inside the container (41).

6. The hydrogen pipeline drainage device according to claim 4, wherein the overflow pipe (44) has an inverted U-shape.

7. The hydrogen pipeline drainage device according to claim 1, characterized in that the valve (21) on the drainage pipeline (2) is a manual valve.

8. The hydrogen pipeline drainage device according to claim 1, wherein the container (41) is a tank structure.