Hydrogen filtering device and hydrogen compressor

Abstract

The utility model provides a hydrogen filtering device and a hydrogen compressor, and the hydrogen filtering device comprises a round shell which is provided with a gas inlet, a first cavity, a second cavity, a third cavity and a gas outlet which are communicated in sequence; the filtering part comprises a cyclone separator arranged in the first cavity, a defoaming unit arranged in the second cavity and a filter element unit arranged in the third cavity, the cyclone separator is used for carrying out dust removal treatment on hydrogen, the defoaming unit is used for removing water vapor in the hydrogen, and the filter element unit is used for filtering the water vapor in the second cavity. And the filter element unit is used for filtering hydrogen. According to the hydrogen filtering device, the cyclone separator is used for carrying out dust removal treatment on the hydrogen, the defoaming unit is used for removing water vapor in the hydrogen, and the filter element unit is used for filtering the hydrogen, so that the hydrogen can meet the required purity when being compressed. The problem that hydrogen is not filtered before being filled in an existing vehicle-mounted gas cylinder, so that the purity of the hydrogen is insufficient is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of hydrogen energy equipment, in particular to a hydrogen filtering device and a hydrogen compressor. Background Art

[0002] As an ideal clean energy with no pollution and high calorific value, hydrogen has attracted great attention from various industries, and the demand is growing. However, pure hydrogen does not exist in nature and can only be obtained by decomposing and separating from other chemical substances. Due to the uneven distribution of resources, the scale and characteristics of hydrogen production are diversified. The sources of hydrogen are complex and there are many types of impurities. The mainstream is hydrogen production from fossil energy, hydrogen production from water electrolysis, or industrial by-product hydrogen, which will produce certain impurities during the preparation process.

[0003] At present, during the long-term storage process of hydrogen, impurities will be mixed in due to micro-leaks and other reasons. If the mixed impurities are directly added to the on-board gas cylinder, they will cause valve blockage and other faults over time. Utility Model Content

[0004] Based on this, in order to solve the problem that the existing vehicle-mounted gas cylinders do not filter the hydrogen before filling, resulting in insufficient hydrogen purity, the utility model provides a hydrogen filtering device and a hydrogen compressor, and its specific technical solution is as follows:

[0005] In one aspect, a hydrogen filtering device comprises:

[0006] A round shell is provided with an air inlet, a first cavity, a second cavity, a third cavity and an air outlet which are connected in sequence;

[0007] The filtering component includes a cyclone separator arranged in the first cavity, a defoaming unit arranged in the second cavity, and a filter element unit arranged in the third cavity, the cyclone separator is used to remove dust from the hydrogen, the defoaming unit is used to remove water vapor in the hydrogen, and the filter element unit is used to filter the hydrogen.

[0008] The hydrogen filtering device removes dust from the hydrogen through a cyclone separator, removes water vapor in the hydrogen through a defoaming unit, and filters the hydrogen through the filter element unit, thereby ensuring that the hydrogen meets the required purity when compressed.

[0009] Furthermore, the cyclone separator includes a fixed plate and a plurality of separation tubes arranged on the fixed plate, and the separation tubes include a tube body arranged vertically, a spiral air inlet shell arranged on the tube body, and a conical nozzle arranged at the lower end of the tube body.

[0010] Furthermore, the defoaming unit is a filter screen arranged on the upper port of the tube body.

[0011] Furthermore, the filter element unit includes a mounting seat, a filter tube arranged on the mounting seat, and a filter element rod arranged in the filter tube.

[0012] Furthermore, the cyclone separator, the defoaming unit and the filter element unit are arranged in sequence from top to bottom in the circular shell.

[0013] Furthermore, it also includes a sewage discharge pipe outlet arranged on the bottom side of the circular shell, and the sewage discharge pipe outlet is sealed and connected through a flange plate.

[0014] Furthermore, a sealing structure is provided on the top of the circular shell; the sealing structure includes an upper open seat arranged on the top of the circular shell, a sealing cover plate adapted to the upper open seat, a threaded column fixedly arranged on the sealing cover plate, and a threaded seat fixedly connected to the circular shell.

[0015] Furthermore, the sealing structure also includes a positioning unit, which includes a positioning blind hole arranged on the sealing cover plate and a positioning pressing pin arranged on the top of the round shell; the positioning pressing pin is installed on the top of the round shell through a hinge seat.

[0016] Furthermore, the air inlet and the air outlet are both provided with switch valves.

[0017] On the other hand, a hydrogen compressor includes a compression main unit and a hydrogen filtering device; the hydrogen filtering device is arranged at the air inlet of the compression main unit to process the hydrogen entering the compression main unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] 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.

[0019] Figure 1 It is a structural schematic diagram of a hydrogen filtering device according to an embodiment of the utility model;

[0020] Figure 2 It is a structural cross-sectional view of a hydrogen filtering device according to an embodiment of the utility model;

[0021] Figure 3 yes Figure 1 The enlarged view of the structure at E in the middle;

[0022] Figure 4 This is a structural cross-sectional view of a separation tube according to an embodiment of the utility model;

[0023] Figure 5 It is a structural schematic diagram of a hydrogen compressor described in one embodiment of the utility model.

[0024] Description of reference numerals:

[0025] 1. Round shell; 2. Filter component; 3. Sealing structure; 4. Switch valve;

[0026] 5. Compression main engine; 6. Hydrogen filtering device;

[0027] 11. Sewage pipe outlet;

[0028] 101, air inlet; 102, first cavity; 103, second cavity; 104, third cavity; 105, air outlet;

[0029] 21. Cyclone separator; 22. Defoaming unit; 23. Filter element unit;

[0030] 211, fixing plate; 212, separation tube; 213, tube body; 214, spiral air inlet shell; 215, conical nozzle;

[0031] 231, mounting seat; 232, filter tube; 233, filter element rod;

[0032] 31. Upper opening seat; 32. Sealing cover plate; 33. Threaded column; 34. Threaded seat; 35. Positioning unit;

[0033] 351. Positioning blind hole; 352. Positioning press pin. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with its embodiments. It should be understood that the specific implementation methods described here are only used to explain the utility model and do not limit the protection scope of the utility model.

[0035] 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.

[0036] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field 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.

[0037] The “first” and “second” mentioned in the present invention do not represent specific quantities and orders, but are merely used to distinguish names.

[0038] On the one hand, if Figure 1 and Figure 2 As shown, a hydrogen filtering device in one embodiment of the utility model includes:

[0039] The round shell 1 is provided with an air inlet 101, a first cavity 102, a second cavity 103, a third cavity 104 and an air outlet 105 which are connected in sequence;

[0040] The filtering component 2 includes a cyclone separator 21 arranged in the first cavity 102, a defoaming unit 22 arranged in the second cavity 103, and a filter element unit 23 arranged in the third cavity 104. The cyclone separator 21 is used to remove dust from the hydrogen, the defoaming unit 22 is used to remove water vapor in the hydrogen, and the filter element unit 23 is used to filter the hydrogen.

[0041] The hydrogen filtering device removes dust from the hydrogen through the cyclone separator 21, removes water vapor in the hydrogen through the defoaming unit 22, and filters the hydrogen through the filter element unit 23, thereby ensuring that the hydrogen meets the required purity when compressed.

[0042] like Figure 2 and Figure 4 As shown, in one embodiment, the cyclone separator 21 includes a fixed plate 211 and a plurality of separation tubes 212 arranged on the fixed plate 211, and the separation tubes 212 include a tube body 213 arranged vertically, a spiral air inlet shell 214 arranged on the tube body 213, and a conical nozzle 215 arranged at the lower end of the tube body 213. In this way, the cyclone separator 21 utilizes the centrifugal force generated by the gas-solid mixture when the spiral air inlet shell 214 rotates at a high speed. Since the centrifugal force on the particles is much greater than the gravity and inertia force, the dust is separated from the hydrogen gas flow and falls into the conical nozzle 215, and the separation efficiency is high.

[0043] In one embodiment, the defoaming unit 22 is a filter disposed at the upper port of the tube body 213. In this way, when the hydrogen with mist rises at a certain speed through the filter, due to the inertia of the rising mist, the mist collides with the filter filaments and is attached to the surface of the filaments. The diffusion of the mist on the surface of the filaments and the gravity sedimentation of the mist cause the mist to form larger droplets that flow along the filaments to the intersection of the two filaments; the wettability of the filaments, the surface tension of the liquid and the capillary action of the filaments make the droplets larger and larger, until the aggregated droplets are so large that the gravity generated by themselves exceeds the combined force of the rising force of the gas and the surface tension of the liquid, the droplets separate from the filaments and fall into the tube body 213 of the cyclone separator 21, and slide down the tube wall, thereby ensuring that the hydrogen is basically free of mist after passing through the filter.

[0044] like Figure 2 and Figure 3 As shown, in one embodiment, the filter element unit 23 includes a mounting seat 231, a filter tube 232 disposed on the mounting seat 231, and a filter element rod 233 disposed in the filter tube 232. In this way, the filter element rod 233 absorbs other impurities in the hydrogen, which can ensure that the hydrogen meets the required purity when compressed; at the same time, the entire filter element unit 23 can be replaced by disassembling the mounting seat 231, which has high assembly efficiency and is convenient for improving production efficiency.

[0045] In one embodiment, the cyclone separator 21, the defoaming unit 22, and the filter element unit 23 are sequentially arranged from top to bottom in the round housing 1. In this way, the structure is compact, and dust and water are conveniently collected at the bottom of the round housing 1.

[0046] In one embodiment, it also includes a sewage outlet 11 disposed on the bottom side of the round shell 1, and the sewage outlet 11 is sealed and connected via a flange plate. In this way, the sewage outlet 11 is used to clean the dust and water collected at the bottom of the round shell 1, thereby ensuring the cleanliness of the hydrogen filter device.

[0047] In one embodiment, a sealing structure 3 is provided at the top of the round shell 1; the sealing structure 3 comprises an upper opening seat 31 provided at the top of the round shell 1, a sealing cover plate 32 adapted to the upper opening seat 31, a threaded column 33 fixedly provided on the sealing cover plate 32, and a threaded seat 34 fixedly connected to the round shell 1. In this way, the threaded column 33 and the threaded seat 34 are relatively rotated, so that the upper opening seat 31 provides a top pressure for the threaded column 33, so that the sealing cover plate 32 can be pressed tightly against the top of the round shell 1 to ensure the sealing strength.

[0048] In one embodiment, the sealing structure 3 further includes a positioning unit 35, which includes a positioning blind hole 351 provided on the sealing cover plate 32 and a positioning pressing pin 352 provided on the top of the round shell 1; the positioning pressing pin 352 is installed on the top of the round shell 1 through a hinge seat. In this way, the positioning pressing pin 352 presses against the positioning blind hole 351 to mark the pressing position, thereby preventing the threaded column 33 from rotating and causing the sealing cover plate 32 to move.

[0049] In one embodiment, the air inlet 101 and the air outlet 105 are both provided with a switch valve 4. Thus, the switch valve 4 is used to control the opening and closing of the air inlet 101 and the air outlet 105 respectively, thereby preventing hydrogen leakage accidents from occurring during the assembly process of the hydrogen filter device.

[0050] In one of the embodiments, the circular shell 1 is provided with a pressure detector which is respectively connected to the first cavity 102, the second cavity 103, and the third cavity 104, and is used to detect the hydrogen pressure of each chamber. The safety of the hydrogen filtering device is ensured by detecting the stability of the hydrogen pressure.

[0051] On the other hand, Figure 5 As shown, a hydrogen compressor in one embodiment of the utility model includes a compression main unit 5 and a hydrogen filtering device 6; the hydrogen filtering device 6 is arranged at the air inlet of the compression main unit 5, and is used to process the hydrogen entering the compression main unit 5.

[0052] 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.

[0053] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A hydrogen filtering device, characterized in that: include: A circular shell (1) is provided with an air inlet (101), a first cavity (102), a second cavity (103), a third cavity (104) and an air outlet (105) which are connected in sequence; The filter component (2) comprises a cyclone separator (21) arranged in the first cavity (102), a defoaming unit (22) arranged in the second cavity (103), and a filter element unit (23) arranged in the third cavity (104), wherein the cyclone separator (21) is used for performing dust removal on hydrogen, the defoaming unit (22) is used for removing water vapor in the hydrogen, and the filter element unit (23) is used for filtering the hydrogen.

2. A hydrogen filtering device according to claim 1, characterized in that: The cyclone separator (21) comprises a fixed plate (211) and a plurality of separation tubes (212) arranged on the fixed plate (211); the separation tubes (212) comprise a tube body (213) arranged vertically, a spiral air inlet shell (214) arranged on the tube body (213), and a conical nozzle (215) arranged at the lower end of the tube body (213).

3. A hydrogen filtering device according to claim 2, characterized in that: The defoaming unit (22) is a filter screen arranged at a port on the tube body (213).

4. A hydrogen filtering device according to claim 3, characterized in that: The filter element unit (23) comprises a mounting seat (231), a filter tube (232) arranged on the mounting seat (231), and a filter element rod (233) arranged in the filter tube (232).

5. A hydrogen filtering device according to claim 4, characterized in that: The cyclone separator (21), the defoaming unit (22), and the filter element unit (23) are arranged in sequence from top to bottom in the circular shell (1).

6. A hydrogen filtering device according to claim 1, characterized in that: It also comprises a sewage discharge pipe opening (11) arranged on the bottom side of the circular shell (1), and the sewage discharge pipe opening (11) is sealed and connected via a flange plate.

7. A hydrogen filtering device according to claim 1, characterized in that: A sealing structure (3) is provided on the top of the circular shell (1); The sealing structure (3) comprises an upper open seat (31) arranged on the top of the circular shell (1), a sealing cover plate (32) adapted to fit the upper open seat (31), a threaded column (33) fixedly arranged on the sealing cover plate (32), and a threaded seat (34) fixedly connected to the circular shell (1).

8. A hydrogen filtering device according to claim 7, characterized in that: The sealing structure (3) further comprises a positioning unit (35), wherein the positioning unit (35) comprises a positioning blind hole (351) arranged on the sealing cover plate (32), and a positioning pressing pin (352) arranged on the top of the round shell (1); The positioning pressing pin (352) is installed on the top of the round shell (1) via a hinge seat.

9. A hydrogen filtering device according to claim 1, characterized in that: The air inlet (101) and the air outlet (105) are both provided with a switch valve (4).

10. A hydrogen compressor, characterized in that: It comprises a compression host (5), and a hydrogen filtering device (6) as claimed in any one of claims 1 to 9; The hydrogen filtering device (6) is arranged at the air inlet of the compression main unit (5) and is used to process the hydrogen entering the compression main unit (5).

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