Water ring hydrogen compressor with automatic liquid supplementing and pressure stabilization

Abstract

This utility model relates to an automatic liquid replenishment and pressure stabilization water ring hydrogen compressor, comprising: a water ring compressor connected to a hydrogen inlet pipe; a gas-liquid separator connected to the water ring compressor, a level gauge installed on the gas-liquid separator, an inlet pipe and a drain pipe provided by the gas-liquid separator, a first programmable valve installed on the inlet pipe, and a second programmable valve installed on the drain pipe, the level gauge signal being connected to the first programmable valve and the second programmable valve. Upon initial start-up or maintenance, if the level gauge detects a low-limit signal, the controller opens the first programmable valve to replenish water until the normal liquid level is reached, at which point the valve closes. After a period of operation, if the separator level reaches a set upper limit, the level gauge detects a high-limit signal, the controller opens the second programmable valve, and the valve closes after the liquid level drops to the normal level, thus achieving automated water replenishment and drainage, saving manpower, and making the compressor operation more stable and safe.

Description

Technical Field

[0001] This utility model relates to the field of water ring hydrogen compressors, specifically to a water ring hydrogen compressor with automatic liquid replenishment and pressure stabilization. Background Technology

[0002] Hydrogen, as a flammable and explosive chemical raw material, is used in chlor-alkali chemical production, where water ring compressors are adopted for production. The working principle of the water ring compressor is mainly to use the impeller of the water ring compressor to swing the water ring, forming low-pressure and high-pressure zones in the shell, and performing the actions of intake, compression, exhaust and separation. Due to its simple structure and safe and stable operation, it is widely recognized.

[0003] Because the hydrogen produced by electrolysis is rich in water vapor, as it is continuously drawn in, compressed and discharged by the water ring compressor, water will continuously accumulate in the separator. In order to ensure the normal operation of the compressor, the liquid drain valve at the bottom of the separator is usually opened manually to drain the liquid, which wastes manpower and is prone to situations where the liquid level in the separator is too low or too high, resulting in unstable compressor pumping force. Utility Model Content

[0004] Based on the above description, this utility model provides a water ring hydrogen compressor with automatic liquid replenishment and pressure stabilization to solve the problems of wasted manpower and easy occurrence of excessively low or high liquid levels in the separator in related technologies.

[0005] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: A water ring hydrogen compressor with automatic liquid replenishment and pressure stabilization, comprising: a water ring compressor for connection to a hydrogen inlet pipe; a gas-liquid separator connected to the water ring compressor, wherein a level gauge is installed on the gas-liquid separator, the gas-liquid separator is provided with an inlet pipe and a drain pipe, a first programmable valve is installed on the inlet pipe, a second programmable valve is installed on the drain pipe, and the level gauge signal is connected to the first programmable valve and the second programmable valve.

[0006] Based on the above technical solution, the present invention can be further improved as follows.

[0007] Furthermore, a circulation pipe is connected to the bottom of the gas-liquid separator, and the circulation pipe is connected to the hydrogen inlet pipe.

[0008] Furthermore, a heat exchanger is installed on the circulation pipe.

[0009] Furthermore, the drain pipe is connected to the hydrogen recovery system.

[0010] Furthermore, the bottom of the gas-liquid separator is connected to a main pipe, which is connected to the water inlet pipe and the water outlet pipe.

[0011] Furthermore, the level gauge, the first programmable valve, and the second programmable valve are all signal-connected to the DCS system.

[0012] Furthermore, the gas-liquid separator is provided with a hydrogen outlet pipe at the top.

[0013] Furthermore, both the hydrogen outlet pipe and the hydrogen inlet pipe are equipped with valves.

[0014] Furthermore, the level gauge is a remote level gauge.

[0015] Furthermore, the level gauge is made of corrosion-resistant and pressure-resistant stainless steel.

[0016] Compared with the prior art, the technical solution of this application has the following beneficial technical effects: After initial startup or maintenance, the level gauge detects a low-limit signal, and the controller opens the first programmable valve to replenish water until the normal level is reached, at which point the valve closes. After a period of operation, the separator level reaches the set upper limit, and the level gauge detects a high-limit signal. The controller then opens the second programmable valve, and the valve closes when the level drops to the normal level. This achieves automated water replenishment and drainage, saving manpower and making the compressor run more smoothly and safely. Attached Figure Description

[0017] Figure 1 A schematic diagram of the overall structure of the water ring hydrogen compressor with automatic liquid replenishment and pressure stabilization provided in this embodiment of the present invention.

[0018] The attached diagram lists the components represented by each number as follows: 1. Water ring compressor; 2. Gas-liquid separator; 3. Level gauge; 4. Water inlet pipe; 5. Drain pipe; 6. First control valve; 7. Second control valve; 8. Hydrogen inlet pipe; 9. Circulation pipe; 10. Heat exchanger; 11. Hydrogen outlet pipe; 12. Main pipe; 13. Valve. Detailed Implementation

[0019] To facilitate understanding of this application, a more complete description will be provided below with reference to the accompanying drawings, which illustrate embodiments of the present application. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this application will be thorough and complete.

[0020] This utility model provides a water ring hydrogen compressor with automatic liquid replenishment and pressure stabilization, which can solve the problems of wasted manpower and easy occurrence of excessively low or high liquid levels in the separator in related technologies.

[0021] See Figure 1As shown in the illustration, an automatic liquid replenishment and pressure stabilization water ring hydrogen compressor according to an embodiment of this utility model includes: a water ring compressor 1 connected to a hydrogen inlet pipe 8; a gas-liquid separator 2 connected to the water ring compressor 1; a level gauge 3 installed on the gas-liquid separator 2; a water inlet pipe 4 and a drain pipe 5 provided on the gas-liquid separator 2; a first programmable valve 6 installed on the water inlet pipe 4; and a second programmable valve 7 installed on the drain pipe 5. The level gauge 3 is signal-connected to the first programmable valve 6 and the second programmable valve 7. When the level gauge 3 detects that the liquid level is too low, it opens the first programmable valve 6 to replenish water. When the level gauge 3 detects that the liquid level is too high, it opens the second programmable valve 7 to drain water. This design avoids human error, provides more stable liquid level control, smoother compressor pumping, and eliminates potential weak points such as sight glasses, making it safer.

[0022] See Figure 1 As shown, in some embodiments, the bottom of the gas-liquid separator 2 is connected to a circulation pipe 9, which is connected to the hydrogen inlet pipe 8. The water in the separator returns to the inlet of the water ring compressor 1 through the circulation pipe 9, and is subsequently ejected and pressurized by the impeller, circulating repeatedly to serve as a sealing medium.

[0023] Among them, level gauge 3 is a remote level gauge made of corrosion-resistant and pressure-resistant stainless steel, which is more accurate and ensures stable operation of the compressor. The pure water pressure in the public station must be greater than the working pressure of the separator; otherwise, there may be a problem with proper water replenishment. The high and low settings of the separator are set according to the compressor's factory design and high and low interlock values ​​(the optimal setting value is determined through daily trial and error). The residual liquid in the reuse separator is alkaline, and the external pressure must also be lower than the separator pressure; otherwise, the residual liquid in the separator cannot be discharged properly.

[0024] The impeller of the water ring compressor 1 is driven to rotate by a motor, forming a water ring that throws gas and liquid together toward the outlet, thus creating a low-pressure zone at the inlet and a high-pressure zone at the outlet. The medium is pure water, which forms a seal and continuously compresses the gas and liquid to discharge it.

[0025] See Figure 1 As shown, in some embodiments, a heat exchanger 10 is installed on the circulation pipe 9. After the compressor performs work, it will generate heat, which can be cooled by the heat exchanger 10 and then returned to the water ring compressor 1.

[0026] See Figure 1 As shown, in some embodiments, the drain pipe 5 is connected to a hydrogen recovery system (hydrogen scrubbing tower) to recycle and reuse the discharged water, thereby improving intelligence and making it safer and more environmentally friendly.

[0027] See Figure 1 As shown, in some embodiments, the bottom of the gas-liquid separator 2 is connected to a main pipe 12, which is connected to the water inlet pipe 4 and the drain pipe 5, thus shortening the water inlet path.

[0028] See Figure 1 As shown, in some embodiments, the level gauge 3, the first programmable valve 6, and the second programmable valve 7 are all signal-connected to the DCS system. By interlocking with the level gauge 3, the DCS program is uploaded to achieve automated operation of water replenishment and drainage.

[0029] See Figure 1 As shown, in some embodiments, the gas-liquid separator 2 is provided with a hydrogen outlet pipe 11 at the top.

[0030] See Figure 1 As shown, in some embodiments, both the hydrogen outlet pipe 11 and the hydrogen inlet pipe 8 are equipped with valves 13.

[0031] The steps for using the water ring hydrogen compressor provided in this embodiment of the invention are as follows: a. The level gauge 3, the first programmable valve 6, and the second programmable valve 7 are functioning normally.

[0032] b. The pure water pressure at the public station is stable and greater than the working pressure of the separator.

[0033] c. When the level gauge 3 detects that the separator level is low, the first programmable valve 6 is opened to replenish water.

[0034] d. After the compressor has been running for a certain period of time, the liquid level in the separator rises to the high limit interlock value, and the second programmable valve 7 opens to drain the liquid until the normal liquid level is reached.

[0035] e. The residual liquid from the separator is discharged into the reuse system through the second programmable valve 7.

[0036] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

[0037] It is understood that spatial relation terms such as "below," "under," "below," "below," "above," "above," etc., can be used here to describe the relationship between one element or feature shown in the figure and other elements or features. It should be understood that, in addition to the orientation shown in the figure, spatial relation terms also include different orientations of the device in use and operation. For example, if the device in the figure is flipped, the element or feature described as "below" or "below" of the other element or feature will be oriented "above" the other element or feature. Therefore, the exemplary terms "below" and "below" can include both upper and lower orientations. Furthermore, the device may also include other orientations (e.g., rotated 90 degrees or other orientations), and the spatial descriptive terms used herein will be interpreted accordingly.

[0038] It should be noted that when one element is considered to be "connected" to another element, it can be directly connected to the other element or connected to the other element through an intermediary element. In the following embodiments, "connection" should be understood as "electrical connection," "communication connection," etc., if the connected circuits, modules, units, etc., have the transmission of electrical signals or data between them.

[0039] When used herein, the singular forms of “a,” “an,” and “the” may also include the plural forms unless the context clearly indicates otherwise. It should also be understood that the terms “comprising,” “including,” or “having,” etc., specify the presence of the stated feature, whole, step, operation, component, part, or combination thereof, but do not preclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts, or combinations thereof.

[0040] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A water ring hydrogen compressor with automatic liquid replenishment and pressure stabilization, characterized in that, It includes: A water ring compressor (1) is used to connect to the hydrogen inlet pipe (8); A gas-liquid separator (2) is connected to the water ring compressor (1). A level gauge (3) is installed on the gas-liquid separator (2). The gas-liquid separator (2) is provided with an inlet pipe (4) and a drain pipe (5). A first programmable valve (6) is installed on the inlet pipe (4). A second programmable valve (7) is installed on the drain pipe (5). The level gauge (3) is signal-connected to the first programmable valve (6) and the second programmable valve (7).

2. The water ring hydrogen compressor with automatic liquid replenishment and pressure stabilization according to claim 1, characterized in that: The bottom of the gas-liquid separator (2) is connected to a circulation pipe (9), which is connected to the hydrogen inlet pipe (8).

3. The water ring hydrogen compressor with automatic liquid replenishment and pressure stabilization according to claim 2, characterized in that: A heat exchanger (10) is installed on the circulation pipe (9).

4. The water ring hydrogen compressor with automatic liquid replenishment and pressure stabilization according to claim 1, characterized in that: The drain pipe (5) is connected to the hydrogen recovery system.

5. The water ring hydrogen compressor with automatic liquid replenishment and pressure stabilization according to claim 1, characterized in that: The bottom of the gas-liquid separator (2) is connected to a main pipe (12), which is connected to the water inlet pipe (4) and the drain pipe (5).

6. The water ring hydrogen compressor with automatic liquid replenishment and pressure stabilization according to claim 1, characterized in that: The level gauge (3), the first programmable valve (6), and the second programmable valve (7) are all connected to the DCS system.

7. The water ring hydrogen compressor with automatic liquid replenishment and pressure stabilization according to claim 1, characterized in that: The gas-liquid separator (2) is provided with a hydrogen outlet pipe (11) at the top.

8. The water ring hydrogen compressor with automatic liquid replenishment and pressure stabilization according to claim 7, characterized in that: Both the hydrogen outlet pipe (11) and the hydrogen inlet pipe (8) are equipped with valves (13).

9. The water ring hydrogen compressor with automatic liquid replenishment and pressure stabilization according to claim 1, characterized in that: The level gauge (3) is a remote level gauge.

10. The water ring hydrogen compressor with automatic liquid replenishment and pressure stabilization according to claim 1, characterized in that: The level gauge (3) is made of corrosion-resistant and pressure-resistant stainless steel.

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