Diaphragm type hydrogen compressor

Abstract

The utility model discloses a diaphragm type hydrogen compressor which comprises a diaphragm type hydrogen compressor body, a supporting frame fixed to the lower end of the diaphragm type hydrogen compressor body, an air inlet cylinder installed at the right end of the diaphragm type hydrogen compressor body and connecting mechanisms arranged on the outer side of the right end of the air inlet cylinder at equal angles. The connecting mechanism is used for limiting the position between the air inlet cylinder and the metal soft air pipe, and the filter screen is installed in the middle of the air inlet cylinder in an inserted mode. According to the diaphragm type hydrogen compressor, low-pressure hydrogen can be compressed and increased to the pressure of 5.0 MPa or above, the process requirement is met, the positive displacement compressor of a special structure is adopted, a compression medium does not make contact with any oil, and the flammable and explosive hydrogen compression requirement is met; the air inlet cylinder and the metal soft air pipe can be in butt joint rapidly and stably conveniently, the sealing effect is good, air can be filtered, and the filter screen can be detached and cleaned conveniently.

Description

Technical Field

[0001] The utility model relates to the technical field of hydrogen compressors, and specifically relates to a diaphragm-type hydrogen compressor. Background Technique

[0002] A hydrogen compressor refers to a device used to compress hydrogen, which can cool, purify, pressurize and transport the high-temperature and wet hydrogen from the electrolysis process, and maintain the pressure stability of the hydrogen system to ensure the safe and stable operation of the electrolytic cell, playing an important role in hydrogen pressurization;

[0003] For example, the publication number CN218493748U discloses a hydrogen compressor, which includes a first protective shell. The top of the first protective shell is fixedly connected with a hydrogen compressor body. The top of the hydrogen compressor body is movably installed with a second protective shell. Both sides of the second protective shell are provided with first grooves. A limiting plate is fixedly connected inside the first groove. A disassembly hole is provided in the middle of the limiting plate. A fixing column is slidably connected inside the disassembly hole. A sliding groove is provided on the inner wall of the first groove. The sliding groove is arc-shaped. A limiting ring is rotatably connected to the outer wall of the fixing column. The outer wall of the limiting ring is slidably connected to the inner wall of the sliding groove. A first spring is fixedly connected between the limiting plate and the limiting ring. In the utility model, it can effectively prevent the compressor body from being damaged due to accidental collision and pipeline leakage, and improve the use safety of the compressor;

[0004] However, in the prior art, the hydrogen of the general hydrogen compressor usually requires a hydrogen pressure of more than 5.0 MPa, while the pipeline hydrogen pressure used is above 1.7 MPa. The hydrogen with a pressure between 1.7 - 5.0 MPa cannot meet the process requirements. The hydrogen in this pressure range cannot be fully utilized, resulting in a high hydrogen unit consumption. Moreover, it is not convenient to quickly connect the compressor to the external gas pipeline. During the gas transportation process, there is a lack of a filtering structure to filter the gas, such as the above-listed comparative patent has this problem;

[0005] Therefore, we propose a diaphragm-type hydrogen compressor to solve the above problems. Content of the Utility Model

[0006] The purpose of the utility model is to provide a diaphragm-type hydrogen compressor to solve the problems in the prior art that the hydrogen of the general hydrogen compressor usually requires a hydrogen pressure of more than 5.0 MPa, while the pipeline hydrogen pressure used is above 1.7 MPa. The hydrogen with a pressure between 1.7 - 5.0 MPa cannot meet the process requirements. The hydrogen in this pressure range cannot be fully utilized, resulting in a high hydrogen unit consumption. Moreover, it is not convenient to quickly connect the compressor to the external gas pipeline. During the gas transportation process, there is a lack of a filtering structure to filter the gas.

[0007] To achieve the above object, the present utility model provides the following technical solutions: A diaphragm-type hydrogen compressor, comprising a diaphragm-type hydrogen compressor body, a support frame fixed to the lower end of the diaphragm-type hydrogen compressor body, and an air inlet cylinder installed at the right end of the diaphragm-type hydrogen compressor body;

[0008] It further includes:

[0009] A connecting mechanism, which is arranged at equal angles on the outer side of the right end of the air inlet cylinder, and the connecting mechanism is used to limit the air inlet cylinder and the metal flexible air pipe;

[0010] Wherein, the metal flexible air pipe is inserted into the right end of the air inlet cylinder, and a sealing ring is arranged in a fitting manner between the metal flexible air pipe and the air inlet cylinder;

[0011] A filter screen, which is inserted and installed in the middle of the air inlet cylinder, and a sealing gasket is arranged in a fitting manner at the connection between the filter screen and the upper end of the air inlet cylinder. Both the front and rear sides of the upper end of the filter screen are fixedly connected with convex blocks, and the convex blocks and the air inlet cylinder are limited by a movable plate;

[0012] At the same time, the movable plate combined with the convex block drives the filter screen and the air inlet cylinder to form a disassembly and cleaning structure.

[0013] Preferably, the connecting mechanism includes a connecting plate fixedly connected to the outer surface of the right end of the air inlet cylinder, a connecting rod inserted in the middle of the connecting plate, a connecting block fixedly connected to the right end of the connecting rod, a fixing block hinge-connected to the middle of the connecting block, and a fixing cap for locking and limiting;

[0014] Preferably, a left-right sliding structure is formed between the connecting rod and the connecting plate, and the connecting rod drives the fixing block to move left and right at the left end of the metal flexible air pipe through the connecting block;

[0015] Preferably, the fixing block forms a flipping structure on the connecting block, and the fixing block is snap-connected to the edge of the left end of the metal flexible air pipe;

[0016] Preferably, the fixing cap is threadedly connected to the middle of the connecting rod, and the fixing cap is arranged in a fitting manner on the left side surface of the connecting plate;

[0017] Preferably, the movable plates are respectively hinge-connected to the front and rear sides of the upper end of the air inlet cylinder, and the movable plates are snap-connected to the convex blocks. A support plate is arranged on the left side of the movable plate, and the support plate is fixedly connected to the upper end of the air inlet cylinder;

[0018] Preferably, a spring is arranged inside the support plate, and the movable end of the spring is fixedly connected with an auxiliary plate. A fixing pin is fixedly connected to the right end of the auxiliary plate, and a sliding structure is formed between the fixing pin and the support plate;

[0019] Preferably, the right end of the fixed pin is inserted and connected with the movable plate.

[0020] Compared with the prior art, the beneficial effects of the present utility model are as follows: For this diaphragm-type hydrogen compressor, by adopting the diaphragm-type hydrogen compressor, it can compress low-pressure hydrogen to a pressure above 5.0 MPa to meet the process requirements. Moreover, for the volumetric compressor with a special structure, the compression medium does not come into contact with any oil, meeting the requirements for compressing flammable and explosive hydrogen. Through the setting of the connecting mechanism, it is convenient to quickly and stably dock the intake cylinder and the metal flexible gas pipe, and the sealing effect is good. Through the setting of the filter screen, the gas can be filtered, and combined with the convex block and the movable plate to drive the filter screen to form a detachable structure in the intake cylinder, thus facilitating the disassembly and cleaning of the filter screen to prevent the filter screen from being blocked during long-term use.

[0021] 1. There are a diaphragm-type hydrogen compressor body and a support frame. The diaphragm-type hydrogen compressor body is fixedly installed on the support frame, and through the diaphragm-type hydrogen compressor body, low-pressure hydrogen can be compressed and boosted to above 5.0 MPa, improving the hydrogen utilization rate and reducing the hydrogen unit consumption. The diaphragm-type hydrogen compressor body is remotely controlled through a solenoid valve, with a constant output hydrogen pressure and safe operation.

[0022] 2. There are a sealing ring and a connecting mechanism. The connecting mechanism is arranged at equal angles on the outer sides of the support frame and the intake cylinder, and the connecting mechanism includes a connecting plate, a connecting rod, a connecting block, a fixing block, and a fixing cap. Through the setting of the connecting mechanism, it is convenient to quickly and stably dock and install the intake cylinder and the metal flexible gas pipe, and with the function of the sealing ring, the overall sealing performance is good.

[0023] 3. There are a filter screen, a convex block, and a movable plate. Through the setting of the filter screen, it is convenient to filter the gas. At the same time, combined with the setting of the convex block and the movable plate, it is convenient to disassemble and clean the filter screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0025] Figure 2 is a front view structural schematic diagram of the intake cylinder, metal flexible gas pipe, connecting block, and filter screen of the present utility model;

[0026] Figure 3 is an exploded structural schematic diagram of the intake cylinder, metal flexible gas pipe, and sealing ring of the present utility model;

[0027] Figure 4 is a schematic diagram of the overall structure of the connecting mechanism of the present utility model;

[0028] Figure 5 is a front view structural schematic diagram of the filter screen and the intake cylinder of the present utility model;

[0029] Figure 6 For the present utility model Figure 2 is a schematic enlarged view of the structure at position A in the present utility model.

[0030] In the figure: 1. Diaphragm type hydrogen compressor body; 2. Support frame; 3. Air intake cylinder; 4. Metal flexible air pipe; 5. Sealing ring; 6. Connecting mechanism; 7. Connecting plate; 8. Connecting rod; 9. Connecting block; 10. Fixed block; 11. Fixed cap; 12. Filter screen; 13. Convex block; 14. Movable plate; 15. Support plate; 16. Spring; 17. Auxiliary plate; 18. Fixed pin. Specific embodiments

[0031] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0032] Please refer to Figures 1-6 , the present utility model provides the following technical solutions.

[0033] Embodiment 1: To solve the problem in the prior art that it is inconvenient to quickly connect the compressor to the external gas pipeline, therefore, in this embodiment, through the following technical solutions, a diaphragm type hydrogen compressor is provided with an air intake cylinder 3, a metal flexible air pipe 4, a sealing ring 5 and a connecting mechanism 6. The connecting mechanism 6 is arranged at equal angles on the outer side of the right end of the air intake cylinder 3, and the connecting mechanism 6 is used to limit the air intake cylinder 3 and the metal flexible air pipe 4. The metal flexible air pipe 4 is inserted into the right end of the air intake cylinder 3, and a sealing ring 5 is arranged in a fitting manner between the metal flexible air pipe 4 and the air intake cylinder 3. The connecting mechanism 6 includes a connecting plate 7 fixedly connected to the outer surface of the right end of the air intake cylinder 3, a connecting rod 8 inserted into the middle of the connecting plate 7, a connecting block 9 fixedly connected to the right end of the connecting rod 8, a fixed block 10 hinged to the middle of the connecting block 9, and a fixed cap 11 for locking and limiting. A left-right sliding structure is formed between the connecting rod 8 and the connecting plate 7, and the connecting rod 8 drives the fixed block 10 to move left and right at the left end of the metal flexible air pipe 4 through the connecting block 9. The fixed block 10 forms a flipping structure on the connecting block 9, and the fixed block 10 is snap-fitted to the edge of the left end of the metal flexible air pipe 4. The fixed cap 11 is threadedly connected to the middle of the connecting rod 8, and the fixed cap 11 is arranged in a fitting manner on the left side surface of the connecting plate 7, as shown in Figure 1 , Figure 2 , Figure 3 and Figure 4As shown in the figure, the flexible metal air pipe 4 is inserted into the right end of the air intake cylinder 3. With the setting of the sealing ring 5, the sealing effect at the connection between the air intake cylinder 3 and the flexible metal air pipe 4 is improved. With the setting of the connection mechanism 6, by flipping the fixing block 10, the fixing block 10 rotates with the connection block 9, so that the connection block 9 is placed at the edge outside the flexible metal air pipe 4. Then, pull the connecting rod 8 to the left, and the connecting rod 8 slides with the connecting plate 7. At this time, the connecting rod 8 drives the fixing block 10 to move to the left through the connection block 9, so that the connection block 9 is engaged with the flexible metal air pipe 4, thereby facilitating the limit installation between the flexible metal air pipe 4 and the air intake cylinder 3. Then, by rotating the fixing cap 11 screwed on the outer surface of the connecting rod 8, the fixing cap 11 is fitted on the outer surface of the connecting plate 7, thereby facilitating the limit between the connecting plate 7 and the connecting rod 8 and completing the installation between the flexible metal air pipe 4 and the air intake cylinder 3.

[0034] Embodiment 2: In the existing diaphragm-type hydrogen compressor, during the process of transporting gas, there is a lack of a filtering structure to filter the gas. Therefore, by setting a filter net 12, a convex block 13, a movable plate 14, a support plate 15, a spring 16, an auxiliary plate 17 and a fixing pin 18, the filter net 12 is inserted and installed in the middle of the air intake cylinder 3, and a sealing gasket is fitted at the connection between the filter net 12 and the upper end of the air intake cylinder 3. Convex blocks 13 are fixedly connected to the front and rear sides of the upper end of the filter net 12. The movable plates 14 are respectively hinged to the front and rear sides of the upper end of the air intake cylinder 3, and the movable plates 14 are engaged with the convex blocks 13. A support plate 15 is arranged on the left side of the movable plate 14, and the support plate 15 is fixedly connected to the upper end of the air intake cylinder 3. A spring 16 is arranged inside the support plate 15, and the movable end of the spring 16 is fixedly connected to an auxiliary plate 17. A fixing pin 18 is fixedly connected to the right end of the auxiliary plate 17, and the fixing pin 18 and the support plate 15 form a sliding structure. The right end of the fixing pin 18 is inserted and connected with the movable plate 14. As Figure 5 and Figure 6 shown in the figure, the gas enters the diaphragm-type hydrogen compressor body 1 through the flexible metal air pipe 4 and the air intake cylinder 3 for compression treatment. At the same time, the filter net 12 is placed in the middle of the air intake cylinder 3, which can play a good filtering effect on the gas. Moreover, after use, by pulling the auxiliary plate 17, the auxiliary plate 17 drives the fixing pin 18 to slide with the support plate 15, and the auxiliary plate 17 squeezes the spring 16, causing the spring 16 to undergo elastic deformation, so that the fixing pin 18 is disengaged from the movable plate 14, thereby releasing the limit between the convex block 13 and the movable plate 14. Then, flip the movable plate 14, and the movable plate 14 rotates at the upper end of the air intake cylinder 3, so that the movable plate 14 is disengaged from the convex block 13, thereby releasing the limit on the filter net 12. Then, pull the filter net 12 upward to pull the filter net 12 out of the air intake cylinder 3, thereby facilitating the disassembly and cleaning of the filter net 12 and preventing the filter net 12 from being blocked during long-term use.

[0035] Embodiment 3: For the existing diaphragm-type hydrogen compressor, the hydrogen in the general hydrogen compressor is required to have a hydrogen pressure of more than 5.0 MPa, while the pipeline hydrogen used has a pressure of more than 1.7 MPa. The hydrogen with a pressure between 1.7 - 5.0 MPa cannot meet the process requirements, and the hydrogen in this pressure range cannot be fully utilized, resulting in a high unit consumption of hydrogen. Therefore, by setting a diaphragm-type hydrogen compressor body 1 and a support frame 2, the diaphragm-type hydrogen compressor body 1 is fixed to the upper end of the support frame 2, as Figure 1 shown, the gas is compressed by the diaphragm-type hydrogen compressor body 1, and the low-pressure hydrogen can be compressed to a pressure of more than 5.0 MPa by the diaphragm-type hydrogen compressor body 1 to meet the process requirements. Moreover, during the use process, the compression medium does not contact any oil, meeting the requirements for compressing flammable and explosive hydrogen.

[0036] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A diaphragm type hydrogen compressor, comprising a diaphragm type hydrogen compressor body (1), a support frame (2) fixed to the lower end of the diaphragm type hydrogen compressor body (1), and an air intake cylinder (3) installed at the right end of the diaphragm type hydrogen compressor body (1); It is characterized in that Also includes: A connecting mechanism (6), the connecting mechanism (6) is arranged at an equal angle on the outside of the right end of the air intake cylinder (3), and the connecting mechanism (6) is used to limit the position between the air intake cylinder (3) and the metal soft air pipe (4); The metal soft air pipe (4) is plugged into the right end of the air intake cylinder (3), and a sealing ring (5) is provided between the metal soft air pipe (4) and the air intake cylinder (3); A filter screen (12), the filter screen (12) is plugged and installed in the middle of the air intake cylinder (3), and a sealing gasket is provided at the connection between the filter screen (12) and the upper end of the air intake cylinder (3), and the front and rear sides of the upper end of the filter screen (12) are fixedly connected with protrusions (13), and the protrusions (13) and the air intake cylinder (3) are limited by a movable plate (14); At the same time, the movable plate (14) is combined with the protrusion (13) to drive the filter screen (12) and the air intake cylinder (3) to form a disassembly and cleaning structure.

2. A diaphragm type hydrogen compressor according to claim 1, characterized in that: The connecting mechanism (6) comprises a connecting plate (7) fixedly connected to the outer surface of the right end of the air intake cylinder (3), a connecting rod (8) inserted in the middle of the connecting plate (7), a connecting block (9) fixedly connected to the right end of the connecting rod (8), a fixing block (10) hingedly connected to the middle of the connecting block (9), and a fixing cap (11) for locking and limiting.

3. A diaphragm type hydrogen compressor according to claim 2, characterized in that: A left-right sliding structure is formed between the connecting rod (8) and the connecting plate (7), and the connecting rod (8) drives the fixing block (10) to move left-right at the left end of the metal soft air pipe (4) through the connecting block (9).

4. A diaphragm type hydrogen compressor according to claim 3, characterized in that: The fixing block (10) forms a flip structure on the connecting block (9), and the fixing block (10) is snap-connected to the edge of the left end of the metal soft air pipe (4).

5. A diaphragm type hydrogen compressor according to claim 2, characterized in that: The fixing cap (11) is threadedly connected to the middle part of the connecting rod (8), and the fixing cap (11) is arranged in close contact with the left side of the connecting plate (7).

6. A diaphragm type hydrogen compressor according to claim 1, characterized in that: The movable plate (14) is hingedly connected to the front and rear sides of the upper end of the air intake cylinder (3), and the movable plate (14) is snap-fitted to the protrusion (13). A support plate (15) is provided on the left side of the movable plate (14), and the support plate (15) is fixedly connected to the upper end of the air intake cylinder (3).

7. A diaphragm type hydrogen compressor according to claim 6, characterized in that: A spring (16) is arranged inside the support plate (15), and the movable end of the spring (16) is fixedly connected to an auxiliary plate (17), and the right end of the auxiliary plate (17) is fixedly connected to a fixing pin (18), and a sliding structure is formed between the fixing pin (18) and the support plate (15).

8. A diaphragm type hydrogen compressor according to claim 7, characterized in that: The right end of the fixing pin (18) is plug-connected to the movable plate (14).

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