Compressor for hydrogen production and storage and hydrogen production system

Abstract

The invention provides a compressor for hydrogen production and storage, and relates to the field of hydrogen cooling, the compressor comprises a compression mechanism and a cooling mechanism, the cooling mechanism comprises a water cooling assembly, the water cooling assembly comprises a first cooling pipe, a second cooling pipe and a runner pipe, the second cooling pipe protrudes towards the first cooling pipe and the runner pipe respectively, and the first cooling pipe and the runner pipe are communicated. The second cooling pipe protrudes towards the first cooling pipe and forms a forward rapid area with the first cooling pipe, and the second cooling pipe protrudes towards the circulating pipe and forms a reverse rapid area with the circulating pipe. The first cooling pipe, the second cooling pipe and the runner pipe are arranged in a layer-by-layer sleeving manner, and the flowing directions in the first cooling pipe, the second cooling pipe and the runner pipe are opposite, so that the hydrogen cooling effect is improved; and the second cooling pipe is bulged, so that the cooling effect of the hydrogen is obviously improved. The invention also provides a hydrogen production system for hydrogen production and hydrogen storage.

Description

Technical Field

[0001] The present invention relates to the field of hydrogen compression and cooling, and in particular to a compressor and a hydrogen production system for hydrogen production and storage. Background Art

[0002] Hydrogen is generally produced by two methods: electrolysis of water and high-temperature catalytic natural gas. After the hydrogen is separated, it has a high temperature and carries a large amount of water, which will affect the purity of the hydrogen. Therefore, in order to reduce the water content in the hydrogen, the hydrogen needs to be cooled and compressed.

[0003] Existing equipment generally uses water cooling to compress and cool hydrogen. A water cooling pipe is set on the outside of the pipe through which hydrogen passes. When hydrogen flows, the water cooling pipe set on the hydrogen pipe will take away the heat of hydrogen to achieve the purpose of cooling. However, this cooling efficiency is too slow, and the hydrogen still has a high temperature when it flows through the water cooling pipe and enters the non-cooling area.

[0004] Therefore, it is necessary to develop or improve a device with better compression cooling effect. Summary of the invention

[0005] Based on this, in order to solve the problem of cooling hydrogen after compression, the present invention provides a compressor for hydrogen production and storage, and its specific technical solution is as follows:

[0006] A compressor for hydrogen production and storage, comprising a compression mechanism and a cooling mechanism, wherein the compression mechanism is used to compress hydrogen, and the cooling mechanism is used to cool the hydrogen, wherein the output end of the compression mechanism is connected to the input end of the cooling mechanism, and the cooling mechanism comprises a water cooling component, and the water cooling component comprises:

[0007] A first cooling pipe;

[0008] A second cooling pipe is arranged inside the first cooling pipe and fixed relative to the first cooling pipe, and the area between the first cooling pipe and the second cooling pipe is a forward cooling channel, and a cooling liquid flows in a forward direction;

[0009] a circulation pipe, arranged in the second cooling pipe and fixed relative to the first cooling pipe and the second cooling pipe, the area between the circulation pipe and the second cooling pipe being a reverse cooling channel, through which coolant circulates in reverse, and high-temperature hydrogen circulates in the circulation pipe;

[0010] The second cooling pipe expands toward the first cooling pipe and the circulation pipe respectively. The area between the second cooling pipe expanding toward the first cooling pipe and the first cooling pipe is a positive rapid area. The area between the second cooling pipe expanding toward the circulation pipe and the circulation pipe is a reverse rapid area.

[0011] Furthermore, it also includes a fixed connecting piece for fixing the first cooling pipe, the second cooling pipe and the flow pipe, and the fixed connecting piece includes a first liquid injection port, a second liquid injection port and an air injection port opened at one end, and a large moon-shaped liquid outlet, a small moon-shaped liquid outlet and an air outlet at the other end;

[0012] The first liquid injection port is connected to the large moon-shaped liquid outlet, and the interior of the connection is a first channel for the circulation of cooling liquid, the first channel is connected to the forward cooling channel, and the output end of the first channel is sphenoid-shaped;

[0013] The second liquid injection port is connected to the small moon-shaped liquid outlet, and the inside of the connection is a second channel for the circulation of cooling liquid, the second channel is connected to the reverse cooling channel, and the output end of the second channel is sphenoid-shaped;

[0014] The gas injection port is communicated with the gas exhaust port, and the internal pipeline thereof is communicated with the flow pipe.

[0015] Furthermore, a first support plate for fixing is provided between the first cooling pipe and the second cooling pipe; the upper end of the first support plate is fixedly connected to the inner wall of the first cooling pipe, and the lower end is fixedly connected to the outer wall of the second cooling pipe, and the first support plate is arranged in an arc shape;

[0016] A second support plate for fixing is provided between the second cooling tube and the circulation tube, the upper end of the second support plate is fixedly connected to the inner wall of the second cooling tube, the lower end is fixedly connected to the outer wall of the circulation tube, and the second support plate is arranged in an arc shape.

[0017] Furthermore, the first cooling tube wall is provided with a first liquid outlet and a first liquid inlet;

[0018] The second cooling tube wall is respectively provided with a second liquid outlet and a second liquid inlet, and the length of the second cooling tube is greater than that of the first cooling tube;

[0019] The pipe wall of the circulation pipe is respectively provided with an air outlet and an air inlet, and the length of the circulation pipe is greater than the length of the second cooling pipe;

[0020] The second liquid outlet and the second liquid inlet are arranged on a tube wall of the second cooling tube that is longer than the first cooling tube, and the air outlet and the air inlet are arranged on a tube wall of the flow tube that is longer than the second cooling tube; and / or

[0021] The first cooling tube is provided with a first liquid outlet and a first liquid inlet at both ends;

[0022] The second cooling tube is provided with a second liquid outlet and a second liquid inlet at both ends thereof;

[0023] The two ends of the flow pipe are respectively provided with an air outlet and an air inlet;

[0024] The first liquid outlet, the second liquid inlet and the air outlet are located at the same end, and the first liquid inlet, the second liquid outlet and the air inlet are located at the same end.

[0025] Furthermore, the water cooling assembly is provided with multiple groups, and the cooling mechanism further comprises:

[0026] A first connecting pipe, two ends of which are connected to a first liquid outlet of the first cooling pipe and a first liquid inlet of another first cooling pipe;

[0027] A second connecting pipe, two ends of which are respectively connected to the second liquid inlet and the second liquid outlet of the two second cooling pipes, so as to allow the coolant to flow through the multiple groups of the water-cooling components, and the coolant circulates through the multiple groups of the water-cooling components and is discharged through the first liquid outlet and the second liquid outlet;

[0028] The third connecting pipe has two ends connected to the air outlet of one of the flow pipes and the air inlet of the other connecting pipe.

[0029] Furthermore, a pressure pump is provided in each of the first cooling tube and the second cooling tube, and the pressure pump is used to further increase the pressure in the tube to increase the flow rate of the coolant.

[0030] Furthermore, the cooling mechanism also includes an air cooling component, the blowing end of the air cooling component is directed toward the first cooling pipe, and is used to assist in cooling the hydrogen.

[0031] Furthermore, the cooling mechanism also includes a temperature detection component, and the temperature detection component is used to detect the temperature of the hydrogen in the circulation pipe.

[0032] Furthermore, the cooling mechanism comprises a reflux component, and the reflux component is communicated with the gas outlet of the circulation pipe for refluxing the hydrogen.

[0033] The present invention provides a hydrogen production system for hydrogen production and storage, comprising a main unit and all technical features of the compressor for hydrogen production and storage as described above, wherein the main unit is used to control and monitor the compression mechanism and the cooling mechanism.

[0034] The beneficial effect brought by this scheme is that the coolant between the forward cooling channel and the reverse cooling channel convects with each other, thereby increasing the speed of heat transfer, and the temperature will drop more rapidly. The second cooling pipe bulges toward the first cooling pipe and the circulation pipe respectively, so that the pipeline in the first cooling pipe where the second cooling pipe bulges toward it becomes narrower, and the pipeline bulging from the second cooling pipe to the circulation pipe becomes wider and smoother, so that the coolant speeds up when circulating in a narrow area, and the heat of the coolant will decrease rapidly. When flowing out of the narrow area, the coolant will be atomized due to pressure reasons, thereby further dissipating heat. Similarly, the reverse cooling channel is the same. Therefore, the layers between the first cooling pipe, the second cooling pipe and the circulation pipe are set up, and the coolant convection in the forward cooling channel and the reverse cooling channel increases the cooling effect of hydrogen, and the second cooling pipe bulges toward the first cooling pipe and the circulation pipe respectively, which further significantly increases the cooling effect of hydrogen. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The present invention can be further understood from the following description in conjunction with the accompanying drawings. The components in the figures are not necessarily drawn to scale, but the emphasis is placed on illustrating the principles of the embodiments. In different views, the same reference numerals designate corresponding parts.

[0036] Figure 1 is a schematic structural diagram of a water cooling assembly according to an embodiment of the present invention;

[0037] Figure 2 yes Figure 1 A schematic diagram of the enlarged structure at A in the middle;

[0038] Figure 3 It is a structural schematic diagram of a water cooling assembly and a fixed connecting piece according to an embodiment of the present invention;

[0039] Figure 4 yes Figure 3 A cross-sectional schematic diagram of the fixed connecting piece at AA in the middle;

[0040] Figure 5 It is a schematic diagram of the structure of the liquid inlet and outlet of the water cooling component according to one embodiment of the present invention;

[0041] Figure 6 is a schematic structural diagram of a liquid inlet and outlet of a water cooling assembly according to another embodiment of the present invention;

[0042] Figure 7 It is a structural schematic diagram of a compressor and a hydrogen production system for hydrogen production and storage according to an embodiment of the present invention;

[0043] Figure 8 It is a structural schematic diagram of a compressor for hydrogen production and storage and a side view of a hydrogen production system according to an embodiment of the present invention;

[0044] Fig. 9It is a schematic structural diagram of an air cooling assembly according to an embodiment of the present invention.

[0045] Description of reference numerals:

[0046] 1. Compression mechanism; 2. Cooling mechanism; 21. Water-cooling assembly; 211. First cooling pipe; 2111. First liquid outlet; 2112. First liquid inlet; 212. Forward cooling channel; 2121. Forward rapid area; 2122. Forward buffer area; 213. Second cooling pipe; 2131. Second liquid outlet; 2132. Second liquid inlet; 214. Reverse cooling channel; 2141. Reverse rapid area; 2142. Reverse buffer area; 215. Circulation pipe; 2151. Air outlet; 2152. Air inlet; 22. Air-cooling assembly; 3. Fixed connecting piece; 31. First liquid injection port; 311. First channel; 32. Second liquid injection port; 321. Second channel; 33. Air injection port; 34. Large moon-shaped liquid outlet; 35. Small moon-shaped liquid outlet; 36. Exhaust port; 4. First support plate; 5. Second support plate. DETAILED DESCRIPTION

[0047] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with its embodiments. It should be understood that the specific implementation methods described herein are only used to explain the present invention and do not limit the protection scope of the present invention.

[0048] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0049] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0050] The “first” and “second” mentioned in the present invention do not represent specific quantities and orders, but are merely used to distinguish names.

[0051] like Figure 1As shown, a compressor for hydrogen production and storage in one embodiment of the present invention includes a compression mechanism 1 and a cooling mechanism 2, wherein the output end of the compression mechanism 1 is connected to the input end of the cooling mechanism 2, and the cooling mechanism 2 includes a water cooling component 21, and the water cooling component 21 includes:

[0052] A first cooling pipe 211;

[0053] The second cooling pipe 213 is disposed inside the first cooling pipe 211 and fixed relative to the first cooling pipe 211. The area between the first cooling pipe 211 and the second cooling pipe 213 is a forward cooling channel 212, through which the cooling liquid flows in a forward direction.

[0054] The circulation pipe 215 is disposed in the second cooling pipe 213 and fixed relative to the first cooling pipe 211 and the second cooling pipe 213. The area between the circulation pipe 215 and the second cooling pipe 213 is a reverse cooling channel 214, through which coolant flows in reverse direction. High-temperature hydrogen flows in the circulation pipe 215.

[0055] The second cooling tube 213 bulges toward the first cooling tube 211 and the circulation tube 215 respectively. The area between the second cooling tube 213 bulging toward the first cooling tube 211 and the first cooling tube 211 is a positive rapid area 2121, and the area between the second cooling tube 213 bulging toward the circulation tube 215 and the circulation tube 215 is a reverse rapid area 2141.

[0056] In this embodiment, the first cooling tube 211 is sleeved outside the second cooling tube 213, and the second cooling tube 213 is sleeved outside the circulation tube 215. That is, the outermost layer is the first cooling tube 211, and the innermost layer is the circulation tube 215.

[0057] The second cooling tube 213 bulges out at intervals toward one side of the first cooling tube 211, and the second cooling tube 213 bulges out at offsets toward one side of the flow tube 215. Thus, the cross section of the second cooling tube 213 is wavy.

[0058] Cooling liquid flows through the first cooling tube 211 and the second cooling tube 213. The channel between the first cooling tube 211 and the second cooling tube 213 is the forward cooling channel 212, and the channel between the second cooling tube 213 and the circulation tube 215 is the reverse cooling channel 214. The increase in flow rate is conducive to the transfer and convection of heat, and the coolant flows forward in the forward cooling channel 212 and flows backward in the reverse cooling channel 214, thereby forming convection, which can generate a speed difference, thereby accelerating the flow of the coolant in disguised form. In this way, the temperature of the coolant is accelerated.

[0059] The second cooling tube 213 bulges toward the first cooling tube 211 and the circulation tube 215 respectively, and a positive rapid area 2121 is formed between the tube wall of the second cooling tube 213 bulging toward the first cooling tube 211 and the first cooling tube 211, and a reverse buffer area 2142 is formed between the tube wall of the second cooling tube 213 bulging toward the first cooling tube 211 and the circulation tube 215.

[0060] A reverse rapid area 2141 is formed between the tube wall of the second cooling tube 213 bulging toward the circulation tube 215 and the circulation tube 215 , and a forward buffer area 2122 is formed between the tube wall of the second cooling tube 213 bulging toward the circulation tube 215 and the first cooling tube 211 .

[0061] The spatial volume of the forward rapid area 2121 is larger than the spatial volume of the forward buffer area 2122. The coolant flows into the forward buffer area 2122. At this time, the distance between the second cooling tube 213 and the first cooling tube 211 is large, and the flow rate of the coolant is relatively slow. When flowing to the forward rapid area 2121, since the channel between the second cooling tube 213 and the first cooling tube 211 gradually narrows, the circulation area of ​​the coolant is reduced, and the coolant needs to pass at a faster speed to ensure the same flow capacity as the upstream. Therefore, the coolant will quickly circulate in the forward rapid area 2121. Because the increase in flow rate is conducive to heat transfer and convection, the coolant will release a large amount of heat when flowing in the forward rapid area 2121.

[0062] The spatial volume of the reverse rapid area 2141 is larger than the spatial volume of the reverse buffer area 2142, and the coolant flows into the reverse buffer area 2142. At this time, the distance between the second cooling tube 213 and the first cooling tube 211 is large, and the flow rate of the coolant is relatively slow. When flowing to the reverse rapid area 2141, since the channel between the second cooling tube 213 and the first cooling tube 211 gradually narrows, the circulation area of ​​the coolant is reduced, and the coolant needs to pass at a faster speed to ensure the same circulation capacity as the upstream. Therefore, the coolant will quickly circulate in the reverse rapid area 2141. Because the increase in flow rate is conducive to heat transfer and convection, the coolant will release a large amount of heat when circulating in the reverse rapid area 2141.

[0063] The first cooling tube 211 and the second cooling tube 213 are integrally arranged. Since the pressure between the first cooling tube 211 and the second cooling tube 213 is relatively large in the forward rapid area 2121 and the reverse rapid area 2141, the first cooling tube 211 and the second cooling tube 213 will be separated during long-term use. Therefore, in order to ensure that the first cooling tube 211 and the second cooling tube 213 are not damaged during the circulation of the coolant, the first cooling tube 211 and the second cooling tube 213 are integrally arranged, and the integrally formed connection can be a rotary vane between the pipes, or the two ends of the first cooling tube 211 can be connected to the two ends of the second cooling tube 213.

[0064] In another embodiment, a booster pump is provided at the connection of the pipeline. By increasing the pressure in the pipeline, the coolant is subjected to a stronger impact force when flowing through the forward rapid area 2121 and the reverse rapid area 2141, which helps to overcome the surface tension and viscosity of the liquid and promote liquid atomization, that is, the coolant will be atomized at the end of the forward cooling channel 212, thereby entering the forward buffer area 2122, and will absorb a large amount of heat when the coolant is atomized, thereby achieving a cooling effect. The compression mechanism 1 compresses the hydrogen and discharges it, and after being cooled by the cooling mechanism 2, it is injected into the hydrogen storage tank.

[0065] like Figure 3 ˉ Figure 6 As shown, in one embodiment, the cooling mechanism 2 further includes a fixed connecting piece 3 for fixing the first cooling tube 211, the second cooling tube 213 and the flow tube 215, and the fixed connecting piece 3 includes a first liquid injection port 31, a second liquid injection port 32 and an air injection port 33 opened at one end, and a large moon-shaped liquid outlet 34, a small moon-shaped liquid outlet 35 and an air outlet 36 at the other end;

[0066] The first liquid injection port 31 is connected to the large moon-shaped liquid outlet 34, and the inside thereof is a first channel 311 for the circulation of the cooling liquid. The first channel 311 is connected to the forward cooling channel 212, and the output end of the first channel 311 is sphenoid-shaped;

[0067] The second liquid injection port 32 is connected to the small moon-shaped liquid outlet 35, and the inside thereof is a second channel 321 for the circulation of the cooling liquid. The second channel 321 is connected to the reverse cooling channel 214, and the output end of the second channel 321 is sphenoid-shaped;

[0068] The gas injection port 33 is communicated with the gas exhaust port 36 , and the internal pipeline thereof is communicated with the flow pipe 215 .

[0069] In this embodiment, a plurality of fixed connecting pieces 3 are provided, and a fixed connecting piece 3 is provided at each end of the first cooling pipe 211 , the second cooling pipe 213 and the circulation pipe 215 to fix the first cooling pipe 211 , the second cooling pipe 213 and the circulation pipe 215 .

[0070] In another embodiment, one end of the fixed connecting piece 3 is provided with a first liquid injection port 31, a second liquid injection port 32 and a gas injection port 33, the first liquid injection port 31 is connected to the coolant injection pipe, the second liquid injection port 32 is connected to the coolant recovery pipe, the gas injection port 33 is connected to the hydrogen pipe compressed by the compression mechanism 1, and the other end of the fixed connecting piece 3 is provided with a large moon-shaped liquid outlet 34, a small moon-shaped liquid outlet 35 and an exhaust port 36, the inner peripheral wall of the large moon-shaped liquid outlet 34 is clamped and connected to one end of the first cooling pipe 211, the peripheral wall of the small moon-shaped liquid outlet 35 is clamped and connected to one end of the second cooling pipe 213, and the peripheral wall of the exhaust port 36 is clamped and connected to one end of the circulation pipe 215.

[0071] The two ends of the first channel 311 are the first liquid injection port 31 and the large moon-shaped liquid outlet 34. The coolant flows into or flows out of the forward cooling channel 212 through the first pipe, and the first pipe is shaped like a sphenoid at the large moon-shaped outlet end; the two ends of the second channel 321 are the second liquid injection port 32 and the small moon-shaped liquid outlet 35. The coolant flows into or flows out of the reverse cooling channel 214 through the second pipe, and the shape of the second pipe small moon-shaped outlet end is sphenoid. Because the first cooling pipe 211, the second cooling pipe 213 and the circulation pipe 215 are arranged in sequence, the coolant circulates in the channels between the first cooling pipe 211 and the second cooling pipe 213 and the circulation pipe 215. If the coolant is injected into the forward cooling channel 212 and the reverse cooling channel 214 through the fixed connecting piece 3, it is necessary to ensure that the fixed connecting piece 3 can circulate the coolant and hydrogen while fixing the first cooling pipe 211, the second cooling pipe 213 and the circulation pipe 215. Therefore, the first channel 311 and the second channel 321 are sphenoid-shaped.

[0072] Therein, sealing rings are provided at both ends of the inner wall of the first channel 311 , sealing rings are provided at both ends of the inner wall of the second channel 321 , and air sealing rings are provided on the inner walls of the gas injection port 33 and the exhaust port 36 .

[0073] In another embodiment, the first channel 311 and the second channel 321 are oil spoon-shaped and opened in the fixed connecting member 3, so that the circulation area of ​​the coolant is increased and the circulation amount of the coolant is increased.

[0074] like Figure 2 ˉ Figure 3As shown, in one embodiment, a first support plate 4 for fixing is provided between the first cooling tube 211 and the second cooling tube 213; the upper end of the first support plate 4 is fixedly connected to the inner wall of the first cooling tube 211, and the lower end is fixedly connected to the outer wall of the second cooling tube 213, and the first support plate 4 is arranged in an arc shape;

[0075] A second support plate 5 for fixing is provided between the second cooling tube 213 and the circulation tube 215. The upper end of the second support plate 5 is fixedly connected to the inner wall of the second cooling tube 213, and the lower end is fixedly connected to the outer wall of the circulation tube 215. The second support plate 5 is arranged in an arc shape.

[0076] In this embodiment, a first support plate 4 is provided between the first cooling pipe 211 and the second cooling pipe 213. Since it is unstable to rely solely on the fixed connecting piece 3, when the coolant passes through the rapid area, a large pressure will be generated to act on the fixed connecting piece 3, thereby easily damaging the fixed connecting piece 3. Therefore, the first support plate 4 is provided between the first cooling pipe 211 and the second cooling pipe 213 to further stabilize the structure between the first cooling pipe 211 and the second cooling pipe 213. In order to make it easier for the coolant to pass through the forward cooling channel 212, the first support plate 4 will be tilted. In order to prevent the coolant in the slow area from flowing around, the tilt direction of the first support plate 4 is uniformly oriented in one direction.

[0077] Under a specific setting, the first support plate 4 has a spiral shape. Since the positive buffer area 2122 is formed by the first cooling tube 211 and the second cooling tube 213 bulging toward the circulation tube 215, due to gravity, when the coolant flows into the positive buffer area 2122 through the positive rapid area 2121, the coolant in the upper part of the positive buffer area 2122 will flow for a distance, and then due to gravity, part of the coolant will sink to the lower part of the positive buffer area 2122, thereby driving the coolant circulation of the entire positive buffer area 2122. However, this circulation form is relatively slow, so the shape of the first support plate 4 is spiral, and the external force of the first support plate 4 intervenes, so that the coolant in the lower part of the positive buffer area 2122 flows in an orderly manner. The spiral structure can speed up the circulation of the coolant to increase the cooling effect.

[0078] Similarly, since the reverse buffer area 2142 is formed by the circulation tube 215 and the second cooling tube 213 bulging toward the first cooling tube 211, due to gravity, when the coolant flows into the reverse buffer area 2142 through the reverse rapid area 2141, the coolant in the lower part of the reverse buffer area 2142 will continue to flow, while the coolant in the upper part of the reverse buffer area 2142 will stay there, thereby affecting the cooling effect. Therefore, the shape of the first support plate 4 is spiral, and the external force of the first support plate 4 intervenes, so that the coolant in the upper part of the reverse buffer area 2142 also flows. The spiral structure can speed up the circulation of the coolant to increase the cooling effect.

[0079] A plurality of spiral first support plates 4 are disposed between the first cooling tube 211 and the second cooling tube 213 , so that the coolant in the tubes can flow evenly.

[0080] Specifically, the first support plate 4 is only arranged in the forward buffer area 2122 and the reverse buffer area 2142 , because the space in the rapid area is relatively narrow and the flow rate of the coolant is relatively fast, which is not conducive to the installation of the first support plate 4 .

[0081] like Figure 3 As shown, in one embodiment, a first liquid outlet 2111 and a first liquid inlet 2112 are provided on the wall of the first cooling tube 211;

[0082] The second cooling tube 213 has a second liquid outlet 2131 and a second liquid inlet 2132 on its wall. The length of the second cooling tube 213 is greater than that of the first cooling tube 211.

[0083] The pipe wall of the circulation pipe 215 is respectively provided with an air outlet 2151 and an air inlet 2152 , and the length of the circulation pipe 215 is greater than that of the second cooling pipe 213 ;

[0084] The second liquid outlet 2131 and the second liquid inlet 2132 are arranged on the tube wall of the second cooling tube 213 which is longer than the first cooling tube 211 , and the air outlet 2151 and the air inlet 2152 are arranged on the tube wall of the circulation tube 215 which is longer than the second cooling tube 213 .

[0085] In this embodiment, since the length of the first cooling tube 211 is smaller than that of the second cooling tube 213, and the length of the second cooling tube 213 is smaller than that of the circulation tube 215, and the first cooling tube 211, the second cooling tube 213 and the circulation tube 215 are arranged in a sequentially nested relationship, the second cooling tube 213 will be partially exposed outside the first cooling tube 211, and the circulation tube 215 will be partially exposed outside the second cooling tube 213, and the second liquid outlet 2131 and the second liquid inlet 2132 are arranged at the exposed pipe of the second cooling tube 213, and similarly, the air outlet 2151 and the air inlet 2152 are arranged at the exposed pipe of the circulation tube 215. Thus, the coolant is respectively injected into the forward cooling channel 212 and the reverse cooling channel 214 through different transport pipelines.

[0086] like Figure 1 ˉ Figure 6 As shown, in one embodiment, a first liquid outlet 2111 and a first liquid inlet 2112 are provided at both ends of the first cooling tube 211;

[0087] The second cooling tube 213 has a second liquid outlet 2131 and a second liquid inlet 2132 at both ends thereof;

[0088] The two ends of the flow pipe 215 are respectively provided with an air outlet 2151 and an air inlet 2152;

[0089] The first liquid outlet 2111 , the second liquid inlet 2132 , and the gas outlet 2151 are located at the same end, and the first liquid inlet 2112 , the second liquid outlet 2131 , and the gas inlet 2152 are located at the same end.

[0090] In this embodiment, if three sequentially sleeved conduits are connected to the hydrogen channels inside the forward cooling channel 212, the reverse cooling channel 214 and the circulation tube 215, the conduit cannot ensure that the innermost conduit is connected to the output end of the compression mechanism 1, and coolant is injected into the outer conduit, and the middle conduit receives the outflow of coolant. Therefore, by fixing the connecting piece 3, the coolant in the forward cooling channel 212 and the reverse cooling channel 214 can be replaced more conveniently, and the hydrogen in the circulation tube 215 can be circulated while ensuring that the first cooling tube 211, the second cooling tube 213 and the circulation tube 215 are fixed.

[0091] like Figure 7 As shown, in one embodiment, the water cooling assembly 21 is provided with multiple groups, and the cooling mechanism 2 further includes:

[0092] A first connecting pipe, two ends of which connect the first liquid outlet 2111 of the first cooling pipe 211 and the first liquid inlet 2112 of another first cooling pipe 211;

[0093] A second connecting pipe, both ends of which are respectively connected to the second liquid inlets 2132 and the second liquid outlets 2131 of the two second cooling pipes 213, so as to allow the coolant to flow through the multiple groups of the water-cooling components 21, and the coolant circulates through the multiple groups of the water-cooling components 21 and is discharged through the first liquid outlet 2111 and the second liquid outlet 2131;

[0094] The third connecting pipe has two ends connected to the air outlet 2151 of one of the flow pipes 215 and the air inlet 2152 of the other connecting pipe.

[0095] In this embodiment, since the first cooling pipe 211, the second cooling pipe 213 and the circulation pipe 215 are provided in multiple groups and are interconnected, the time for the hydrogen to pass through the cooling area is increased, so as to achieve a better cooling effect. The first connecting pipe connects a first cooling pipe 211 with another first cooling pipe 211 to ensure that the coolant in the two forward cooling channels 212 can flow; the second connecting pipe connects a second cooling pipe 213 with another second cooling pipe 213 to ensure that the coolant in the reverse cooling channel 214 can flow; the third connecting pipe can ensure the hydrogen in the two circulation pipes 215 can flow.

[0096] Due to the influence of gravity, the coolant in the first cooling tube 211 and the second cooling tube 213 flows from top to bottom, and the coolant in the tube can be accelerated again by gravity.

[0097] In one embodiment, a pressure pump is provided in each of the first cooling tube 211 and the second cooling tube 213, and the pressure pump is used to further increase the pressure in the tube to increase the flow rate of the coolant.

[0098] In this embodiment, due to the arrangement, the coolant will be subjected to a greater pressure when flowing through the forward rapid area 2121 and the reverse rapid area 2141, so the flow rate will become faster, and after further increasing the pressure on the coolant, the coolant is very likely to be atomized when leaving the forward rapid area 2121 and the reverse rapid area 2141, and the atomization will absorb a large amount of heat. Through the cooperation of multiple forward rapid areas 2121, reverse rapid areas 2141 and pressure pumps, the hydrogen in the circulation pipe 215 can be quickly cooled.

[0099] Pressure pumps are generally divided into micro electromagnetic pumps and micro diaphragm pumps. Among them, the micro electromagnetic pump is an electromagnetically driven plunger pump with compact structure, high output pressure, no leakage, small size, and good dynamic adjustment characteristics. Its working principle is to control the left and right movement of the slide bar by turning on and off the power of the electromagnetic coil, thereby changing the volume of the sealed chamber and realizing the suction and discharge of liquid.

[0100] The micro diaphragm pump uses the circular motion of the motor to drive the mechanical device to make the diaphragm inside the water pump do reciprocating motion, thereby compressing and stretching the air in the pump cavity, forming positive pressure and vacuum, and realizing the suction and discharge of liquid. Therefore, the micro electromagnetic pump is better in this solution.

[0101] like Figure 8 As shown, in one embodiment, the cooling mechanism 2 further includes an air cooling component 22, and the air outlet of the air cooling component 22 is aligned with the first cooling pipe 211 for auxiliary cooling.

[0102] In this embodiment, the blowing end of the air cooling component 22 faces the first cooling pipe 211, the second cooling pipe 213 and the circulation pipe 215 to further dissipate heat. The air cooling component 22 includes a fan, and the working state of the air cooling component 22 directly affects the heat dissipation efficiency. By adjusting the speed and wind direction of the fan, the heat dissipation process can be accurately controlled to ensure that the system can maintain efficient heat dissipation performance under different working conditions.

[0103] The fan generates airflow through the rotating impeller, and the airflow can blow over the surface of the first cooling pipe 211 and the exposed flow pipe 215, thereby accelerating the heat transfer. When the hot air is blown away by the fan, fresh cold air will be continuously replenished to form a continuous air flow cycle, which helps to quickly take away the heat and reduce the temperature of the entire compressor for hydrogen production and storage.

[0104] Part of the flow tube 215 needs to be exposed to the first cooling tube 211 and the second cooling tube 213 because it is necessary to detect the temperature of the hydrogen inside the flow tube 215 and the pressure inside the flow tube 215 to determine whether the hydrogen is leaking.

[0105] The airflow generated by the fan not only accelerates the transfer of heat, but also promotes the circulation of air inside and outside the cooling system. This circulation helps to balance the temperature distribution inside the system and prevent local overheating.

[0106] In the case of hydrogen leakage, the operation of the fan can speed up the wind flow and reduce the heat accumulation problem caused by air stagnation. This is of great significance for improving the overall performance of the compression mechanism 1 and extending the service life of the equipment.

[0107] In another embodiment, the blowing end of the air cooling mechanism is simultaneously directed to the compression device, the first cooling tube 211, the second cooling tube 213 and the circulation tube 215, so that the air cooling mechanism can cool the compression device while cooling the first cooling tube 211, the second cooling tube 213 and the circulation tube 215. This helps to reduce the operating burden and energy consumption of the compression system due to overheating.

[0108] In another embodiment, the fan of the air cooling mechanism also has a negative ion generator. Since there is static electricity in the air, when hydrogen leaks to a certain concentration, static electricity can easily cause the hydrogen floating in the room to explode. Therefore, the negative ion generator can eliminate static electricity in the room. Negative ions can neutralize the positive charge in the air, reduce the accumulation of static electricity, and also reduce the static electricity phenomenon in the air.

[0109] In one embodiment, the cooling mechanism 2 further includes a temperature detection component for detecting the temperature of the hydrogen in the circulation pipe 215 .

[0110] In this embodiment, the temperature detection component includes a temperature sensor for detecting the temperature of hydrogen in the circulation tube 215 and a first valve. The first valve is disposed at the gas outlet 2151 end of the circulation tube 215 .

[0111] When the hydrogen reaches or is lower than a predetermined temperature, the first valve at the gas outlet 2151 of the circulation pipe 215 is opened, and the hydrogen will flow directly from the gas outlet 2151 into the hydrogen storage tank.

[0112] Generally speaking, temperature sensors are classified into:

[0113] The contact temperature sensor has a detection end in contact with the flow tube 215. The temperature is sensed by directly contacting the flow tube 215 and converted into an electrical signal or other form of signal output.

[0114] The non-contact temperature sensor has a sensitive element that is not in contact with the flow tube 215 , and the temperature is estimated by measuring the infrared radiation emitted by the flow tube 215 .

[0115] The contact temperature sensor only needs to be in contact with and fixed to the flow tube 215, so it is more convenient in actual use. The non-contact temperature sensor measures the surface temperature of the flow tube 215, which changes rapidly. Generally, it takes a certain amount of time for the hydrogen to cool down, so this type is not suitable for main measurement. However, the contact temperature sensor and the non-contact temperature sensor can work together to measure the hydrogen temperature in the flow tube 215 more accurately.

[0116] In another embodiment, the temperature sensor is a bimetallic strip, which is formed by attaching two metals with different expansion coefficients to the flow tube 215. When the temperature changes, the metals expand to different degrees, causing the metal strip to bend, and the curvature of the bending can be converted into an output signal.

[0117] In another embodiment, the temperature sensor is a thermocouple, which is composed of two metal wires of different materials. When the temperature at the junction of the two materials is different, a thermoelectric potential will be generated in the loop. By measuring the magnitude of this thermoelectric potential, the temperature at the junction can be calculated.

[0118] In another embodiment, the temperature sensor is a thermistor, which measures temperature by using the property of semiconductor materials that the resistance value changes significantly when the temperature changes. When the temperature rises, the resistance value of the thermistor decreases; conversely, when the temperature decreases, the resistance value increases.

[0119] like Figure 7 As shown, in one embodiment, the cooling mechanism 2 includes a reflux component, which is connected to the gas outlet 2151 of the circulation pipe 215 for reflowing hydrogen.

[0120] In this embodiment, the reflux component includes a reflux pipe and two valves. The reflux pipe is connected to the gas outlet 2151 of the circulation pipe 215. Two valves are also provided on the reflux pipe. The two valves control the hydrogen to flow to the hydrogen storage tank and the water cooling component 21 respectively.

[0121] When the temperature detection component on the return pipe detects that the hydrogen temperature reaches a predetermined temperature, the valve leading to the hydrogen storage tank will be opened; when the temperature detection component on the return pipe detects that the hydrogen temperature is higher than a predetermined temperature, the valve leading to the water cooling component 21 will be opened. This can better ensure that the hydrogen temperature reaches the preset temperature to prevent high-temperature hydrogen from damaging the equipment.

[0122] The present invention provides a hydrogen production system for hydrogen production and storage, comprising a main unit and all technical features of the compressor for hydrogen production and storage as described above, wherein the main unit is used to control and monitor the compression mechanism 1 and the cooling mechanism 2.

[0123] The host collects various data such as temperature detection components, pressure in the pipe, ambient hydrogen concentration, etc., so as to predict the overall hydrogen production process.

[0124] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0125] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A compressor for hydrogen production and storage, characterized in that: The invention comprises a compression mechanism and a cooling mechanism, wherein the compression mechanism is used to compress hydrogen, and the cooling mechanism is used to cool hydrogen. The output end of the compression mechanism is connected to the input end of the cooling mechanism, and the cooling mechanism comprises a water cooling component, and the water cooling component comprises: A first cooling pipe; A second cooling pipe is arranged inside the first cooling pipe and fixed relative to the first cooling pipe, and the area between the first cooling pipe and the second cooling pipe is a forward cooling channel, and a cooling liquid flows in a forward direction; a circulation pipe, arranged in the second cooling pipe and fixed relative to the first cooling pipe and the second cooling pipe, the area between the circulation pipe and the second cooling pipe being a reverse cooling channel, through which coolant circulates in reverse, and high-temperature hydrogen circulates in the circulation pipe; The second cooling pipe expands toward the first cooling pipe and the circulation pipe respectively. The area between the second cooling pipe expanding toward the first cooling pipe and the first cooling pipe is a positive rapid area. The area between the second cooling pipe expanding toward the circulation pipe and the circulation pipe is a reverse rapid area.

2. The compressor for hydrogen production and storage according to claim 1, characterized in that: It also includes a fixed connecting piece for fixing the first cooling pipe, the second cooling pipe and the flow pipe, the fixed connecting piece includes a first liquid injection port, a second liquid injection port and an air injection port opened at one end, and a large moon-shaped liquid outlet, a small moon-shaped liquid outlet and an air outlet at the other end; The first liquid injection port is connected to the large moon-shaped liquid outlet, and the interior of the connection is a first channel for the circulation of cooling liquid, the first channel is connected to the forward cooling channel, and the output end of the first channel is sphenoid-shaped; The second liquid injection port is connected to the small moon-shaped liquid outlet, and the inside of the connection is a second channel for the circulation of cooling liquid, the second channel is connected to the reverse cooling channel, and the output end of the second channel is sphenoid-shaped; The gas injection port is communicated with the gas exhaust port, and the internal pipeline thereof is communicated with the flow pipe.

3. The compressor for hydrogen production and storage according to claim 1, characterized in that: A first support plate for fixing is provided between the first cooling pipe and the second cooling pipe; the upper end of the first support plate is fixedly connected to the inner wall of the first cooling pipe, and the lower end is fixedly connected to the outer wall of the second cooling pipe, and the first support plate is arranged in an arc shape; A second support plate for fixing is provided between the second cooling tube and the circulation tube, the upper end of the second support plate is fixedly connected to the inner wall of the second cooling tube, the lower end is fixedly connected to the outer wall of the circulation tube, and the second support plate is arranged in an arc shape.

4. The compressor for hydrogen production and storage according to claim 2, characterized in that: The first cooling tube wall is provided with a first liquid outlet and a first liquid inlet; The second cooling tube wall is respectively provided with a second liquid outlet and a second liquid inlet, and the length of the second cooling tube is greater than that of the first cooling tube; The pipe wall of the circulation pipe is respectively provided with an air outlet and an air inlet, and the length of the circulation pipe is greater than the length of the second cooling pipe; The second liquid outlet and the second liquid inlet are arranged on a tube wall of the second cooling tube that is longer than the first cooling tube, and the air outlet and the air inlet are arranged on a tube wall of the flow tube that is longer than the second cooling tube; or The first cooling tube is provided with a first liquid outlet and a first liquid inlet at both ends; The second cooling tube is provided with a second liquid outlet and a second liquid inlet at both ends thereof; The two ends of the flow pipe are respectively provided with an air outlet and an air inlet; The first liquid outlet, the second liquid inlet and the air outlet are located at the same end, and the first liquid inlet, the second liquid outlet and the air inlet are located at the same end.

5. The compressor for hydrogen production and storage according to claim 4, characterized in that: The water cooling assembly is provided with multiple groups, and the cooling mechanism further comprises: A first connecting pipe, two ends of which are connected to a first liquid outlet of the first cooling pipe and a first liquid inlet of another first cooling pipe; A second connecting pipe, two ends of which are respectively connected to the second liquid inlet and the second liquid outlet of the two second cooling pipes, so as to allow the coolant to flow through the multiple groups of the water-cooling components, and the coolant circulates through the multiple groups of the water-cooling components and is discharged through the first liquid outlet and the second liquid outlet; The third connecting pipe has two ends connected to the air outlet of one of the flow pipes and the air inlet of the other connecting pipe.

6. The compressor for hydrogen production and storage according to claim 1, characterized in that: A pressure pump is provided in each of the first cooling tube and the second cooling tube, and the pressure pump is used to further increase the pressure in the tube to increase the flow rate of the coolant.

7. The compressor for hydrogen production and storage according to claim 1, characterized in that: The cooling mechanism further comprises an air cooling component, wherein the blowing end of the air cooling component faces the first cooling pipe and is used for assisting in cooling the hydrogen.

8. The compressor for hydrogen production and storage according to claim 1, characterized in that: The cooling mechanism further includes a temperature detection component, and the temperature detection component is used to detect the temperature of the hydrogen in the circulation pipe.

9. The compressor for hydrogen production and storage according to claim 8, characterized in that: The cooling mechanism comprises a reflux component, which is communicated with the gas outlet of the flow pipe and is used for reflowing the hydrogen.

10. A hydrogen production system, comprising a main engine and a compressor for producing and storing hydrogen as claimed in any one of claims 1 to 9, characterized in that: The host is used to control and monitor the compression mechanism and the cooling mechanism.

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