Cooling device for hydrogen compressor unit

Abstract

The utility model discloses a cooling device for a hydrogen compressor unit in the technical field of cooling devices, which comprises a cooler, a precipitator is added into a treatment pond, and the treatment pond is communicated with the cooler. The treatment pond comprises a precipitation reaction cavity and a filter cavity, a filter screen is arranged in the middle of the treatment pond, the precipitation reaction cavity is arranged below the filter screen, the filter cavity is arranged above the filter screen, and the filter cavity is communicated with the cooler; a water inlet and a precipitant inlet are formed in the precipitation reaction cavity. The treatment tank is arranged, the precipitator is added into the treatment tank, metal ions in water are precipitated in advance, and the possibility of generating scale in the cooler is reduced, so that the cooler is ensured to have a normal use effect and a normal service life, and the hydrogen compressor is continuously and stably cooled.

Description

Technical Field

[0001] The utility model relates to the technical field of cooling devices, in particular to a cooling device for a hydrogen compressor unit. Background Art

[0002] Shell and tube heat exchangers are one of the ideal choices for hydrogen compressor cooling systems because of their high heat transfer performance, excellent corrosion resistance, good economy and reliability, and easy maintenance and cleaning. However, tubular heat exchangers may scale after running for a period of time.

[0003] When the existing hydrogen compressor cooler is scaled, the compressor needs to be shut down, and after the cooler is disassembled, the end covers at both ends need to be opened and descaled with tools, which seriously affects the normal operation of the hydrogen compressor and the safety factors of the hydrogen refueling station.

[0004] Therefore, studying a cooling device for a hydrogen compressor unit is of great significance to the development of hydrogen compressors. Utility Model Content

[0005] The utility model aims to provide a cooling device for a hydrogen compressor unit. By setting up a treatment pool, during the use of the device, a precipitant can be added to the treatment pool to react with metal ions in water in advance, thereby reducing the formation of scale and overcoming the problem of easy scaling of the intermediate cooler in the prior art.

[0006] The purpose of the utility model is mainly achieved through the following technical solutions: A cooling device for a hydrogen compressor unit, comprising a cooler, wherein the treatment pool is connected to a liquid inlet of the cooler;

[0007] During the hydrogen compression process, a large amount of heat will be generated. The cooler can control the temperature inside the compressor to prevent overheating and component damage, and can also improve compression efficiency, extend component life, and ensure stable operation of the system. However, after a period of use, the widely used coolers (shell-and-tube heat exchangers) will produce insoluble compounds under high temperature or evaporation concentration conditions. These compounds gradually deposit and adhere to the inner wall of the container or pipe to form scale. The formation of scale not only affects the heat transfer efficiency, but also may cause equipment corrosion, reduce equipment performance and service life. The present application sets a treatment pool in front of the cooler, adds lime, calcium sulfate, phosphate and other precipitants to the treatment pool, and makes the precipitant fully react with metal ions such as calcium and magnesium ions in the treatment pool water to form insoluble precipitates, thereby reducing the content of metal ions in the water entering the heat exchanger, reducing the possibility of precipitation, and thus ensuring the normal use effect and service life of the cooler.

[0008] Since there are many heat exchange tubes inside the shell-and-tube heat exchanger, the tube diameter is small and the tube body is long, if physical tools are used to remove the scale after it is generated, the compressor often needs to be shut down, and the end covers at both ends need to be opened after the cooler is disassembled to use tools to remove the scale. This is difficult to completely remove and seriously affects the normal operation of the hydrogen compressor and the safety of the hydrogen refueling station. This application sets up a sedimentation tank to produce and remove the precipitate in advance through chemical means. The technology is stable, the cost is low and the effect is obvious.

[0009] By connecting the treatment tank to the liquid inlet of the cooler, the water entering the cooler will be purified water, which will prevent scaling in the cooler, will not reduce the function of the cooler, and will also reduce the frequency of shutting down the entire machine for cooler cleaning.

[0010] An inclined plate is provided at the bottom of the treatment tank, a gap is left between the inclined plate and one side of the treatment tank, and a concave sediment waste box is provided at the gap;

[0011] An inclined plate is arranged at the bottom of the precipitation reaction chamber. Since the inclined plate is inclined, part of the precipitation falling on it can fall due to gravity, and is less likely to adhere to the surface than a flat plate.

[0012] The generated precipitate falls to the precipitate waste box at the bottom of the precipitate reaction chamber. Since the precipitate waste box is concave, it is not easy for the precipitate to be unable to be collected or always float in the water due to the turbulence of the water flow and be difficult to be discharged.

[0013] The structure of the inclined plate and the sediment waste box can reduce the floating sediment in the water to a certain extent. It can reduce the accumulation of sediment at the bottom of the treatment pool, thereby reducing the cleaning frequency and reducing the possibility of the treated water clogging the gasket and filter in the circuit during flow.

[0014] Furthermore, a horizontal bottom plate is provided on the top of the waste sedimentation box, and the bottom plate, the inclined plate and the side wall of the treatment tank can form a closed cavity;

[0015] The bottom plate is slidably connected to the inclined plate. The waste sedimentation box is provided with a water inlet for adding water therein. The bottom of the waste sedimentation box is provided with a drain outlet. Both the water inlet and the drain outlet can be opened and closed.

[0016] A bottom plate is arranged on the top of the sediment waste box, so that the bottom plate can slide relative to the inclined plate to achieve the blocking or opening of the sediment waste box. The bottom plate is slid to make the bottom plate partly away from the sediment waste box, and the sediment slides along the inclined plate into the sediment waste box.

[0017] The bottom plate, the inclined plate and the side wall of the treatment tank can form a closed cavity, and the sediment waste box is independent at this time. A water inlet for adding water is set on the sediment waste box, and a drain port is set at the bottom of the sediment waste box. The drain port is opened to drain the water and sediment in the sediment waste box, and water is poured into the box through the water inlet to wash the box body and completely drain the sediment. In this way, the sediment waste box located under the bottom plate can be pulled out and the sediment can be cleared without shutting down the treatment tank and draining the water. It can be used continuously and uninterruptedly, and the normal operation will not be disturbed by the cleaning of the treatment tank.

[0018] Furthermore, the treatment tank includes a precipitation reaction chamber and a filtration chamber, a filter screen is provided in the middle of the treatment tank, the precipitation reaction chamber is located below the filter screen, and the filtration chamber is located above the filter screen;

[0019] The filter chamber is in communication with the liquid inlet of the cooler;

[0020] The precipitation reaction chamber is provided with a water inlet and a precipitation agent inlet.

[0021] The sedimentation tank is divided into two parts, a sedimentation reaction chamber and a filtration chamber, by a filter screen. The lower part is the sedimentation reaction chamber. A water inlet and a precipitant inlet are arranged on the sedimentation reaction chamber, so that water and precipitant can be added at any time to make the two react fully, produce precipitation and sink to the bottom of the sedimentation reaction chamber.

[0022] Because the water inlet and the precipitant inlet are below the filter, in the process of continuously adding water and precipitant, some light precipitates may not sink normally and always float in the water and eventually flow into the cooler through the pipeline. Therefore, the present application sets a filter above the precipitation reaction chamber, and makes the filter chamber above the filter, so that the clear liquid after the precipitation reaction passes through the filter into the upper filter chamber, and then enters the cooler for heat exchange.

[0023] Furthermore, the water inlet is located at the top of the inclined plate, and a pressure regulating pump is provided at the water inlet.

[0024] The water inlet is located at the top of the inclined plate, and a pressure regulating pump is provided at the water inlet. After a certain amount of sediment accumulates on the inclined plate, the water pressure at the water inlet is increased, so that the existing water body is pushed from the high part of the inclined plate to the low part, causing the water body to become turbulent and fluctuate, thereby causing the sediment on the inclined plate to fall and eventually enter the sediment waste box. After the sliding bottom plate prevents the water body from entering the sediment waste box, the sediment is discharged from the drain port through the drain port and the water inlet on the sediment waste box, thereby cleaning the inclined plate and the bottom plate. Furthermore, a water reservoir is provided between the filter chamber and the cooler.

[0025] A water reservoir is arranged between the filter chamber and the cooler to store the treated water in the water reservoir. If there is any problem in the treatment pool, the refrigerator may not be shut down, thereby ensuring the normal and continuous use of the hydrogen compressor.

[0026] Furthermore, the cooler is provided with a water outlet, and the water outlet is connected to a water return pipe;

[0027] The return pipe is connected to the treatment tank to form a first circulation loop, and the return pipe is connected to the water storage tank to form a second circulation loop. Valves are installed on the first circulation loop and the second circulation loop.

[0028] A water outlet is arranged on the cooler, a return pipe is connected to the water outlet, and the return pipe is connected to the treatment pool and the water storage tank. The water after use in the cooler is cooled and then flows back to the treatment pool or the water storage tank for recycling.

[0029] Furthermore, the filter screen includes a second filter screen and a first filter screen, the edge of the second filter screen and the edge of the first filter screen are fixed to the inner wall of the treatment tank, the second filter screen is located above the first filter screen, and a gap is left between the second filter screen and the first filter screen, and the filter hole size of the second filter screen is smaller than the filter hole size of the first filter screen.

[0030] When the filter holes are too coarse, the sediment may enter the filter cavity of the upper layer and eventually flow into the circuit, which will fail to reduce the scale in the cooler. When the filter holes are too fine, it is easy to cause blockage and fail to ensure normal water supply. This solution sets the filter screen to be multi-layered, and the filter holes of the upper filter screen are smaller than the water filter holes of the lower filter screen, which not only ensures the filtering effect, but also ensures that enough filtered water flows into the cooler.

[0031] Furthermore, a water pump is provided at the liquid inlet of the cooler, and the water pump is used to adjust the water flow rate in the cooler.

[0032] A water pump is arranged at the water inlet of the cooler to ensure a stable water pressure inside the cooler and keep the water flow rate in the cooler within an appropriate range, thereby reducing the generation of sediment and indirectly reducing the risk of scaling in the pipeline.

[0033] In summary, compared with the prior art, the present invention has the following beneficial effects:

[0034] (1) Set up a treatment pool and add a precipitant into the treatment pool to precipitate the metal ions in the water in advance, reducing the possibility of scale formation in the cooler, thereby ensuring the normal use effect and service life of the cooler and continuously and stably cooling the hydrogen compressor. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The drawings described herein are used to provide a further understanding of the embodiments of the present utility model, constitute a part of this application, and do not constitute a limitation of the embodiments of the present utility model. In the drawings:

[0036] Figure 1 A cross-sectional view of the present application;

[0037] Figure 2 A front view of the treatment pool of the present application with the panels removed;

[0038] Figure 3 This is the overall connection diagram of this application;

[0039] The names corresponding to the accompanying drawings are: 1. treatment tank; 101. filter chamber; 102. sedimentation reaction chamber; 103. bottom plate; 2. water reservoir; 3. second filter screen; 4. first filter screen; 5. water inlet; 6. precipitant inlet; 7. sedimentation waste box; 8. inclined plate; 9. chiller; 10. cooler; 11. return pipe; 12. valve. DETAILED DESCRIPTION

[0040] In order to make the purpose, technical solutions and advantages of the utility model more clearly understood, the utility model is further described in detail below in conjunction with embodiments and drawings. The schematic implementation manner of the utility model and its description are only used to explain the utility model and are not intended to limit the utility model.

[0041] Example:

[0042] like Figure 1-Figure 3 As shown,

[0043] The purpose of the utility model is mainly achieved through the following technical solutions: A cooling device for a hydrogen compressor unit, comprising a cooler 10, wherein the treatment pool 1 is connected to a liquid inlet of the cooler 10;

[0044] During the hydrogen compression process, a large amount of heat will be generated. The cooler 10 can control the temperature inside the compressor to prevent overheating and component damage, and can also improve compression efficiency, extend component life, and ensure stable operation of the system. However, after a period of use, the widely used cooler 10 (shell-and-tube heat exchanger) will cause calcium, magnesium and other mineral ions in the water to react chemically to form insoluble compounds under high temperature or evaporation concentration conditions. These compounds gradually deposit and adhere to the inner wall of the container or pipe to form scale. The formation of scale not only affects the heat transfer efficiency, but also may cause equipment corrosion, reduce equipment performance and service life. The present application sets a treatment pool 1 in front of the cooler 10, adds lime, calcium sulfate, phosphate and other precipitants to the treatment pool 1, and makes the precipitant fully react with metal ions such as calcium and magnesium ions in the water of the treatment pool 1 to form insoluble precipitates, thereby reducing the content of metal ions in the water entering the heat exchanger, reducing the possibility of precipitation, and thus ensuring the normal use effect and service life of the cooler 10.

[0045] Because the number of heat exchange tubes inside the shell-and-tube heat exchanger is large, the tube diameter is small and the tube body is long, if physical tools are used to remove the scale after the scale is generated, the compressor often needs to be shut down, and the end covers at both ends are opened after the cooler 10 is disassembled to remove the scale with tools. It is difficult to completely remove the scale and seriously affects the normal operation of the hydrogen compressor and the safety of the hydrogenation station. This application sets up a sedimentation tank. During the use of the device, a precipitant can be added to the treatment tank to make the precipitate generated and removed in advance. The technology is stable, low cost and effective.

[0046] By connecting the treatment pool 1 with the liquid inlet of the cooler 10, the water entering the cooler 10 is purified water, which makes it difficult for scale to form in the cooler 10, does not reduce the function of the cooler 10, and reduces the frequency of shutting down the entire machine for cleaning the cooler 10.

[0047] The bottom of the treatment tank 1 is provided with an inclined plate 8, a gap is left between the inclined plate 8 and one side of the treatment tank 1, and a concave sediment waste box 7 is provided in the gap;

[0048] An inclined inclined plate 8 is disposed at the bottom of the precipitation reaction chamber 102. Since the inclined plate 8 is inclined, part of the precipitation falling on it can fall due to gravity, and is less likely to adhere to the surface than a flat plate.

[0049] The generated precipitate falls to the precipitate waste box 7 at the bottom of the precipitate reaction chamber 102. Since the precipitate waste box 7 is concave, it is not easy for the precipitate to be unable to be collected or always float in the water and be difficult to be discharged due to the turbulence of the water flow.

[0050] The structure of the inclined plate 8 and the waste sediment box 7 can reduce the floating sediment in the water to a certain extent, reduce the sediment accumulation at the bottom of the treatment tank 1, thereby reducing the cleaning frequency and reducing the possibility of the treated water body clogging the gasket and filter in the circuit during flow.

[0051] Furthermore, a horizontal bottom plate 103 is provided on the top of the waste sedimentation box 7, and the bottom plate 103, the inclined plate 8 and the side wall of the treatment tank 1 can form a closed cavity;

[0052] The bottom plate 103 is slidably connected to the inclined plate 8. The waste sedimentation box 7 is provided with a water inlet for adding water therein. The bottom of the waste sedimentation box 7 is provided with a drain outlet. Both the water inlet and the drain outlet can be opened and closed.

[0053] A bottom plate 103 is arranged on the top of the sediment waste box 7 so that the bottom plate 103 can slide relative to the inclined plate 8 to achieve the blocking or opening of the sediment waste box 7. The bottom plate 103 is slid so that the bottom plate 103 partially leaves the sediment waste box 7, and the sediment slides along the inclined plate 8 into the sediment waste box 7.

[0054] The bottom plate 103, the inclined plate 8 and the side wall of the treatment tank 1 can form a closed cavity, and the sediment waste box 7 is independent at this time. A water inlet for adding water is set on the sediment waste box 7, and a drain port is set at the bottom of the sediment waste box 7. The drain port is opened to drain the water and sediment in the sediment waste box 7, and water is poured into the box through the water inlet to wash the box body and completely drain the sediment. In this way, the sediment waste box 7 located under the bottom plate 103 can be pulled out and the sediment can be cleared without shutting down the treatment tank 1 and draining the water. It can be used continuously and uninterruptedly, and the cleaning of the treatment tank 1 will not interfere with the normal operation.

[0055] Furthermore, the treatment pool 1 includes a precipitation reaction chamber 102 and a filtration chamber 101. A filter screen is provided in the middle of the treatment pool 1. The precipitation reaction chamber 102 is located below the filter screen, and the filtration chamber 101 is located above the filter screen.

[0056] The filter chamber 101 is in communication with the liquid inlet of the cooler 10;

[0057] The precipitation reaction chamber 102 is provided with a water inlet 5 and a precipitation agent inlet 6 .

[0058] The sedimentation tank is divided into two parts, a sedimentation reaction chamber 102 and a filter chamber 101, by a filter screen. The lower part is the sedimentation reaction chamber 102. A water inlet 5 and a precipitant inlet 6 are arranged on the sedimentation reaction chamber 102 to facilitate the addition of water and precipitant at any time so that the two can fully react to produce precipitation and sink to the bottom of the sedimentation reaction chamber 102.

[0059] Since the water inlet 5 and the precipitant inlet 6 are below the filter screen, in the process of continuously adding water and precipitant, some light precipitates may not sink normally and always float in the water and eventually flow into the cooler 10 through the pipeline. Therefore, the present application sets a filter screen above the precipitation reaction chamber 102, and the filter chamber 101 is above the filter screen, so that the clear liquid after the precipitation reaction passes through the filter screen into the upper filter chamber 101, and then enters the cooler 10 for heat exchange.

[0060] When the above scheme is implemented, filtering devices such as filter screens and filter discs are provided at both ends of each connecting pipeline.

[0061] Furthermore, the water inlet 5 is located at the top of the inclined plate 8 , and a pressure regulating pump is provided at the water inlet 5 .

[0062] The water inlet 5 is located at the top of the inclined plate 8, and a pressure regulating pump is provided at the water inlet 5. After a certain amount of sediment is accumulated on the inclined plate 8, the water pressure at the water inlet 5 is increased, so that the existing water body is pushed from the high part of the inclined plate 8 to the low part, causing the water body to be turbulent and fluctuate, so that the sediment on the inclined plate 8 falls and finally enters the sediment waste box 7. After the sliding bottom plate 103 prevents the water body from entering the sediment waste box 7, the sediment is discharged from the drain port through the drain port and the water opening on the sediment waste box 7, so as to clean the inclined plate 8 and the bottom plate 103.

[0063] When the above solution is implemented, the pressure regulating pump can be replaced by a wave maker to remove the sediment on the inclined plate 8.

[0064] Furthermore, a water reservoir 2 is provided between the filter chamber 101 and the cooler 10 .

[0065] A water reservoir 2 is provided between the filter chamber 101 and the cooler 10 to store the treated water in the water reservoir 2. If there is any problem with the treatment pool 1, the refrigerator may not be shut down, thereby ensuring the normal and continuous use of the hydrogen compressor.

[0066] Furthermore, the cooler 10 is provided with a water outlet, and the water outlet is connected to a water return pipe 11;

[0067] The return pipe 11 is connected to the treatment tank 1 to form a first circulation loop, and the return pipe 11 is connected to the water storage tank 2 to form a second circulation loop. Valves 12 are installed on both the first circulation loop and the second circulation loop.

[0068] A water outlet is provided on the cooler 10, and a return pipe 11 is connected to the water outlet, and the return pipe 11 is connected to the treatment tank 1 and the water storage tank 2. After the water used in the cooler 10 is cooled, it flows back to the treatment tank 1 or the water storage tank 2 for recycling.

[0069] When the above scheme is implemented, a chiller 9 is installed on the water reservoir 2 or the return pipe 11. The chiller 9 is a product that can cool water. Specifically, a fan, an industrial chiller 9, etc. can be used. The water can also be first discharged and cooled statically and then introduced into the water reservoir 2.

[0070] Furthermore, the filter screen includes a second filter screen 3 and a first filter screen 4, the edge of the second filter screen 3 and the edge of the first filter screen 4 are fixed to the inner wall of the treatment pool 1, the second filter screen 3 is located above the first filter screen 4, and a gap is left between the second filter screen 3 and the first filter screen 4, and the filter hole size of the second filter screen 3 is smaller than the filter hole size of the first filter screen 4.

[0071] When the filter pores are too coarse, the sediment may enter the upper filter chamber 101 and eventually flow into the loop, and the purpose of reducing scale in the cooler 10 cannot be achieved. When the filter pores are too fine, it is easy to cause blockage and normal water supply cannot be guaranteed.

[0072] In this solution, the filter screen is arranged in multiple layers, and the filter holes of the upper filter screen are smaller than the water filter holes of the lower filter screen, which not only ensures the filtering effect, but also ensures that enough filtered water flows into the cooler 10.

[0073] Furthermore, a water pump is provided at the liquid inlet of the cooler 10 , and the water pump is used to adjust the water flow rate in the cooler 10 .

[0074] A water pump is provided at the liquid inlet of the cooler 10 to ensure a stable water pressure inside the cooler 10 and to maintain the water flow rate in the cooler 10 within an appropriate range, thereby reducing the formation of sediments and indirectly reducing the risk of scaling in the pipeline.

[0075] The specific implementation methods described above further illustrate the purpose, technical solutions and beneficial effects of the utility model in detail. It should be understood that the above description is only the specific implementation method of the utility model and is not used to limit the protection scope of the utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. A cooling device for a hydrogen compressor unit, comprising a cooler (10), characterized in that: It also comprises a treatment pool (1), wherein the treatment pool (1) is connected to the liquid inlet of the cooler (10); The bottom of the treatment tank (1) is provided with an inclined plate (8), a gap is left between the inclined plate (8) and a side surface of the treatment tank (1), and a concave waste sedimentation box (7) is provided in the gap.

2. A cooling device for a hydrogen compressor unit according to claim 1, characterized in that: A horizontal bottom plate (103) is arranged on the top of the waste sedimentation box (7), and the bottom plate (103), the inclined plate (8) and the side wall of the treatment tank (1) can form a closed cavity; The bottom plate (103) is slidably connected to the inclined plate (8); a water inlet for adding water is provided on the waste sedimentation box (7); a drainage outlet is provided at the bottom of the waste sedimentation box (7); and both the water inlet and the drainage outlet can be opened and closed.

3. A cooling device for a hydrogen compressor unit according to claim 2, characterized in that: A filter screen is provided in the middle of the treatment pool (1), and the filter screen divides the treatment pool (1) into two parts, the lower part of the filter screen being the precipitation reaction chamber (102) and the upper part of the filter screen being the filtration chamber (101); The filter chamber (101) is in communication with the liquid inlet of the cooler (10); The precipitation reaction chamber (102) is provided with a water inlet (5) and a precipitation agent inlet (6).

4. A cooling device for a hydrogen compressor unit according to claim 3, characterized in that: The water inlet (5) is located at the top of the inclined plate (8), and a pressure regulating pump is provided at the water inlet.

5. A cooling device for a hydrogen compressor unit according to claim 3, characterized in that: A water reservoir (2) is provided between the filter chamber (101) and the cooler (10).

6. A cooling device for a hydrogen compressor unit according to claim 5, characterized in that: The cooler (10) is provided with a water outlet, and the water outlet is connected to a water return pipe (11); The return pipe (11) is connected to the treatment tank (1) to form a first circulation loop, and the return pipe (11) is connected to the water storage tank (2) to form a second circulation loop. Valves (12) are installed on both the first circulation loop and the second circulation loop.

7. A cooling device for a hydrogen compressor unit according to claim 3, characterized in that: The filter screen comprises a second filter screen (3) and a first filter screen (4); the edge of the second filter screen (3) and the edge of the first filter screen (4) are both fixed to the inner wall of the treatment pool (1); the second filter screen (3) is located above the first filter screen (4); a gap is left between the second filter screen (3) and the first filter screen (4); the filter hole size of the second filter screen (3) is smaller than the filter hole size of the first filter screen (4).

8. A cooling device for a hydrogen compressor unit according to claim 1, characterized in that: A water pump is provided at the liquid inlet of the cooler (10), and the water pump is used to adjust the water flow rate in the cooler.

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