CN215983542U - Auxiliary cooling device for high-pressure hydrogenation machine - Google Patents
Auxiliary cooling device for high-pressure hydrogenation machine Download PDFInfo
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- CN215983542U CN215983542U CN202122356637.2U CN202122356637U CN215983542U CN 215983542 U CN215983542 U CN 215983542U CN 202122356637 U CN202122356637 U CN 202122356637U CN 215983542 U CN215983542 U CN 215983542U
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- pipe
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- shaped pipe
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- 238000005984 hydrogenation reaction Methods 0.000 title claims abstract description 46
- 238000001816 cooling Methods 0.000 title claims abstract description 40
- 239000007788 liquid Substances 0.000 claims abstract description 50
- 230000000903 blocking effect Effects 0.000 claims abstract description 16
- 210000001503 joint Anatomy 0.000 claims description 12
- 239000000498 cooling water Substances 0.000 abstract description 21
- 238000009434 installation Methods 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract description 5
- 238000000034 method Methods 0.000 abstract 1
- 230000004888 barrier function Effects 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 239000013589 supplement Substances 0.000 description 4
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 125000006850 spacer group Chemical group 0.000 description 2
- 230000009469 supplementation Effects 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
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Abstract
The utility model discloses an auxiliary cooling device for a high-pressure hydrogenation machine, which comprises a hydrogenation machine body, wherein an assembly installation bin is arranged at the lower middle part in the hydrogenation machine body, the middle upper parts of the front side wall and the rear side wall in the assembly installation bin are fixedly connected with a fixed frame, the rear side in the fixed frame is fixedly connected with a first U-shaped pipe, the center in the fixed frame is fixedly connected with a second U-shaped pipe, and the left input end of the second U-shaped pipe is connected with the left output end of the first U-shaped pipe through a group of C-shaped pipes. According to the utility model, a group of fixed air pipe frames are additionally arranged above the inner part of the assembly installation bin for installing and placing the key element of the hydrogenation mechanism, the cooling effect is improved, the bottom limiting disc is pushed, the bottom limiting disc moves through the connecting shaft column and the spring additionally arranged on the rear side of the conical blocking block, so that the conical blocking block is pushed together, the input port of the auxiliary pipe is blocked again, the cooling water is prevented from flowing back into the liquid feeding pump, and the method is worthy of great popularization.
Description
Technical Field
The utility model relates to the technical field of hydrogenation equipment, in particular to an auxiliary cooling device for a high-pressure hydrogenation machine.
Background
The number of the hydrogen stations is also increasing, various demonstration activities are developed around the world, and the construction and demonstration operation activities of the hydrogen stations accumulate a large amount of data and experience for the future.
Because vehicle hydrogenation is generally carried out outdoors, so the hydrogenation machine needs to be installed outdoors, and a certain hidden danger is caused to equipment in an outdoor high-temperature environment and long-time operation of internal elements, according to the cooling device of the compressor of the oxygen adding machine provided by patent document CN211573733U, a fan is utilized for air cooling and heat dissipation, so the cooling effect is not good, and if a corresponding water cooling mechanism is additionally arranged, when cooling water is supplemented to the water cooling mechanism, a backflow phenomenon also exists.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the defects in the prior art and provides an auxiliary cooling device for a high-pressure hydrogenation machine.
In order to achieve the purpose, the utility model adopts the following technical scheme: an auxiliary cooling device for a high-pressure hydrogenation machine comprises a hydrogenation machine body, wherein a component mounting bin is arranged at the middle lower part in the hydrogenation machine body, the component mounting bin is internally and fixedly connected with a fixed frame at the middle upper part of the front and rear side walls, the rear side of the interior of the fixed frame is fixedly connected with a first U-shaped pipe, the center of the interior of the fixed frame is fixedly connected with a second U-shaped pipe, the left input end of the second U-shaped pipe is connected with the left output end of the first U-shaped pipe through a group of C-shaped pipes, the front side of the interior of the fixed frame is fixedly connected with a third U-shaped pipe, the left input end of the third U-shaped pipe is connected with the left output end of the second U-shaped pipe through another group of connecting pipes, the front side part of the third U-shaped pipe is fixedly connected with a liquid circulating pump, the left output end of the third U-shaped pipe is connected with the left input end of the first U-shaped pipe through a group of connecting pipes, and the middle upper part of the left side wall of the component mounting bin is fixedly connected with a liquid feeding pump, liquid feeding pump front side input fixed connection inlet tube, liquid feeding pump rear side output fixed connection auxiliary tube, the inside center fixed connection separation ring of auxiliary tube, the auxiliary tube intraduct is provided with the connection jack-post, limit disc at the bottom of the connection jack-post rear end fixed connection, the tapered spacer block of connection jack-post front end fixed connection, tapered spacer block rear end fixed connection spring, the rear side output fixed connection liquid feeding pipe of auxiliary tube, liquid feeding pipe rear end fixed connection is to the pipe, the fixed tuber pipe support of subassembly installation storehouse top wall center fixed connection, fixed tuber pipe support top fixed connection driving fan.
As a further description of the above technical solution:
and the middle lower parts of the front side wall and the rear side wall of the hydrogenation machine body are provided with a group of exhaust windows.
As a further description of the above technical solution:
and the middle upper parts of the front side wall and the rear side wall of the hydrogenation machine body are provided with a group of air inlet windows.
As a further description of the above technical solution:
the liquid inlet pipe penetrates through the left side wall of the hydrogenation machine body and extends to the inside of the component mounting bin.
As a further description of the above technical solution:
and the output end and the input end of the liquid circulating pump are respectively and fixedly connected with a third U-shaped pipe.
As a further description of the above technical solution:
the right output part of the liquid feeding pipe penetrates through the left side wall of the butt joint pipe.
As a further description of the above technical solution:
the bottom limiting disc is arranged behind the blocking ring, and the diameter of the outer circle of the bottom limiting disc is larger than that of the inner circle of the blocking ring.
As a further description of the above technical solution:
the minimum diameter of the conical separation block is larger than the diameter of the input end of the auxiliary pipe.
The utility model has the following beneficial effects:
1. in the utility model, firstly, a group of fixed air pipe frames are additionally arranged above the inner part of an assembly installation bin for installing and placing key elements of a hydrogenation machine and are used for fixedly installing a group of driving fans to generate cooling air for cooling and radiating, a first U-shaped pipe, a second U-shaped pipe and a third U-shaped pipe are fixedly and additionally arranged above the assembly installation bin through a fixed frame, the first U-shaped pipe and the second U-shaped pipe are communicated with each other through a group of C-shaped pipes, the second U-shaped pipe and the third U-shaped pipe are also communicated with each other through an additionally arranged group of C-shaped pipes, the third U-shaped pipe is communicated with the first U-shaped pipe through an additionally arranged group of butt-joint pipes, the first U-shaped pipe, the second U-shaped pipe and the third U-shaped pipe store cooling water for cooling low temperature, and the cooling water is circulated in a transfusion pipeline formed by combining the first U-shaped pipe, the second U-shaped pipe and the third U-shaped pipe through a liquid circulating pump additionally arranged on the third U-shaped pipe, after the cooling air generated by the driving fan passes through the first U-shaped pipe, the second U-shaped pipe and the third U-shaped pipe, the temperature of the cooling air is continuously reduced, and the cooling air is blown into equipment inside the hydrogenation machine body, so that the equipment is cooled, and the cooling effect is improved.
2. In the utility model, when the interior of the first U-shaped tube, the second U-shaped tube and the third U-shaped tube needs to be supplemented with cooling water, the added liquid pump is started, the added liquid pump pumps the cooling water into the auxiliary tube added at the output end of the liquid pump from the outside along the liquid inlet tube added at the input end of the added liquid pump, high-pressure water flow directly impacts the conical blocking block at the input port inside the auxiliary tube and pushes the conical blocking block towards the inside of the auxiliary tube, the input port of the auxiliary tube is opened and circulated, then the cooling water flows into the butt joint tube through the added liquid pipe to realize supplementation, after the supplementation is finished, the cooling water inside the butt joint tube flows back to the inside of the auxiliary tube, the returned cooling water directly impacts the bottom limiting disc and pushes the bottom limiting disc, the bottom limiting disc moves to enable the conical blocking block to be pushed together with the input port of the auxiliary tube to be blocked again, the cooling water is prevented from flowing back to the liquid feeding pump, and the device is worth popularizing.
Drawings
FIG. 1 is an isometric view of an auxiliary cooling device for a high pressure hydrogenation unit according to the present invention;
FIG. 2 is a schematic isometric view of a sectional view of the internal structure of an auxiliary cooling device for a high pressure hydrogenation apparatus according to the present invention;
FIG. 3 is a schematic view of the upper and lower equiangular axes of the water cooling structure of the auxiliary cooling device for a high pressure hydrogenation apparatus according to the present invention;
FIG. 4 is a schematic bottom view of an auxiliary cooling device for a high pressure hydrogenation apparatus according to the present invention;
fig. 5 is an enlarged schematic view of a portion a in fig. 4.
Illustration of the drawings:
1. a hydrogenation organism; 2. an air intake window; 3. driving a fan; 4. an exhaust window; 5. a component mounting bin; 6. a fixing frame; 7. fixing the air pipe frame; 8. a first U-shaped tube; 9. a second U-shaped tube; 10. a third U-shaped tube; 11. a C-shaped pipe; 12. a liquid circulation pump; 13. a liquid adding pump; 14. butt-joint pipes; 15. a liquid feeding pipe; 16. an auxiliary tube; 17. connecting the shaft columns; 18. a bottom limiting disc; 19. a barrier ring; 20. a spring; 21. a tapered barrier block; 22. a liquid inlet pipe.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and furthermore, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1-3, one embodiment of the present invention is provided: an auxiliary cooling device for a high-pressure hydrogenation machine comprises a hydrogenation machine body 1, wherein a component mounting bin 5 is arranged at the middle lower part in the hydrogenation machine body 1, a fixed frame 6 is fixedly connected at the middle upper part of the front and rear side walls in the component mounting bin 5, a first U-shaped pipe 8 is fixedly connected at the rear side in the fixed frame 6, a second U-shaped pipe 9 is fixedly connected at the center in the fixed frame 6, the left input end of the second U-shaped pipe 9 is connected with the left output end of the first U-shaped pipe 8 through a group of C-shaped pipes 11, a third U-shaped pipe 10 is fixedly connected at the front side in the fixed frame 6, the left input end of the third U-shaped pipe 10 is connected with the left output end of the second U-shaped pipe 9 through another group of connecting pipes 14, a liquid circulating pump 12 is fixedly connected at the front side of the third U-shaped pipe 10, the left output end of the third U-shaped pipe 10 is connected with the left input end of the first U-shaped pipe 8 through a group of connecting pipes 14, and mutual circulation between the first U-shaped pipe 8 and the second U-shaped pipe 9 is realized through a group of C-shaped pipes 11, the second U-shaped pipe 9 and the third U-shaped pipe 10 are communicated with each other through a group of C-shaped pipes 11 which are additionally arranged, the third U-shaped pipe 10 is communicated with the first U-shaped pipe 8 through a group of butt-joint pipes 14 which are additionally arranged, the first U-shaped pipe 8, the second U-shaped pipe 9 and the third U-shaped pipe 10 are internally stored with cooling water for cooling at low temperature, a liquid adding pump 13 is fixedly connected with the middle upper part of the left side wall in the component installation bin 5, the front side input end of the liquid adding pump 13 is fixedly connected with a liquid inlet pipe 22, the rear side output end of the liquid adding pump 13 is fixedly connected with an auxiliary pipe 16, the additionally arranged liquid adding pump 13 is started, the liquid adding pump 13 pumps the cooling water into the auxiliary pipe 16 which is additionally arranged at the output end of the liquid adding pump 13 from the outside along the liquid inlet pipe 22 additionally arranged at the input end of the liquid adding pump, a blocking ring 19 is fixedly connected with the center in the auxiliary pipe 16, a connecting shaft column 17 is arranged in the auxiliary pipe 16, the rear side end of the connecting shaft column 17 is fixedly connected with a bottom limiting disc 18, the front side end of the connecting shaft column 17 is fixedly connected with a conical block 21, high-pressure water flow can directly impact the conical block 21 at the input port inside the auxiliary pipe 16 and push the conical block 21 towards the inside of the auxiliary pipe 16, so that the input port of the auxiliary pipe 16 is opened and circulated, then the high-pressure water flow flows into the butt joint pipe 14 through the liquid feeding pipe 15, the rear side end of the conical block 21 is fixedly connected with a spring 20, after the supplement is finished, cooling water inside the butt joint pipe 14 can flow back to the inside of the auxiliary pipe 16, the returned cooling water can directly impact the bottom limiting disc 18 and push the bottom limiting disc 18, the bottom limiting disc 18 moves through the spring 20 additionally arranged at the rear side of the connecting shaft column 17 and the conical block 21, so that the conical block 21 is pushed together, the input port of the auxiliary pipe 16 is blocked again, the rear side output end of the auxiliary pipe 16 is fixedly connected with the liquid feeding pipe 15, the rear side end of the liquid feeding pipe 15 is fixedly connected with the butt joint pipe 14, the fixed tuber pipe frame 7 of 5 roof centers fixed connection in subassembly installation storehouse, fixed tuber pipe frame 7 top fixed connection driving fan 3 produces the cooling air that is used for cooling heat dissipation.
The lower part all is provided with a set of exhaust window 4 in the lateral wall around the hydrogenation organism 1, utilize exhaust window 4 and air inlet window 2 to realize the circulation of hydrogenation organism inside air, upper portion all is provided with a set of air inlet window 2 in the lateral wall around the hydrogenation organism 1, liquid inlet pipe 22 runs through 1 left side wall of hydrogenation organism and extends to inside the subassembly installation storehouse 5, the output and the input of liquid circulating pump 12 are third U-shaped pipe 10 of fixed connection respectively, the right side output of liquid feeding pipe 15 runs through 14 left side walls of butt joint pipe, bottom limiting disc 18 sets up at the barrier ring 19 rear, the excircle diameter of bottom limiting disc 18 is greater than the interior circle diameter of barrier ring 19, barrier ring 19 has just played limiting displacement to the motion of bottom limiting disc 18, the minimum diameter of toper barrier 21 is greater than the input diameter of auxiliary tube 16, make toper barrier 21 can block the input of auxiliary tube 16.
The working principle is as follows: firstly, a set of fixed air pipe frame 7 is additionally arranged above the inside of a component mounting bin 5 for mounting and placing key elements of a hydrogenation machine for fixedly and additionally arranging a set of driving fans 3 to generate cooling air for cooling and radiating, a first U-shaped pipe 8, a second U-shaped pipe 9 and a third U-shaped pipe 10 are fixedly and additionally arranged above the component mounting bin 5 through a fixed frame 6, the first U-shaped pipe 8 and the second U-shaped pipe 9 are communicated with each other through a set of C-shaped pipes 11, the second U-shaped pipe 9 and the third U-shaped pipe 10 are also communicated with each other through an additionally arranged set of C-shaped pipes 11, the third U-shaped pipe 10 is communicated with the first U-shaped pipe 8 through an additionally arranged set of butt joint pipes 14, cooling water for cooling at low temperature is stored inside the first U-shaped pipe 8, the second U-shaped pipe 9 and the third U-shaped pipe 10, and cooling water is realized on the first U-shaped pipe 8, the second U-shaped pipe 8, the third U-shaped pipe 10 through an additionally arranged liquid circulating pump 12, The cooling air generated by the driving fan 3 continuously reduces its temperature after passing through the first U-shaped tube 8, the second U-shaped tube 9 and the third U-shaped tube 10 and blows into the equipment inside the hydrogenation machine body 1 to cool the equipment, when the inside of the first U-shaped tube 8, the second U-shaped tube 9 and the third U-shaped tube 10 needs cooling water supplement, the charging pump 13 is started, the charging pipe 22 installed at the input end of the charging pump 13 externally pumps the cooling water into the auxiliary pipe 16 installed at the output end of the charging pump 13, the high-pressure water flow directly impacts the conical blocking block 21 at the input port inside the auxiliary pipe 16 and pushes the same into the auxiliary pipe 16 to open the input port of the auxiliary pipe 16 for circulation, and then flows into the butt joint pipe 14 through the charging pipe 15, the supplement is realized, after the supplement is finished, cooling water in the butt joint pipe 14 flows back to the interior of the auxiliary pipe 16, the returned cooling water directly impacts the bottom limiting disc 18 and pushes the bottom limiting disc 18, the bottom limiting disc 18 moves through the spring 20 additionally arranged on the rear side of the connecting shaft column 17 and the conical blocking block 21, the conical blocking block 21 is pushed together, the input port of the auxiliary pipe 16 is blocked again, and the cooling water is prevented from flowing back to the liquid adding pump 13.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the utility model.
Claims (8)
1. The utility model provides a high pressure hydrogenation is auxiliary cooling device for machine, includes hydrogenation organism (1), its characterized in that: the middle lower part inside the hydrogenation machine body (1) is provided with a component mounting bin (5), the component mounting bin (5) is internally provided with a front and rear side wall middle and upper part fixedly connected with a fixed frame (6), the fixed frame (6) is internally provided with a rear side fixedly connected with a first U-shaped pipe (8), the fixed frame (6) is internally provided with a center fixedly connected with a second U-shaped pipe (9), the left input end of the second U-shaped pipe (9) is connected with the left output end of the first U-shaped pipe (8) through a group of C-shaped pipes (11), the fixed frame (6) is internally provided with a front side fixedly connected with a third U-shaped pipe (10), the left input end of the third U-shaped pipe (10) is connected with the left output end of the second U-shaped pipe (9) through another group of connecting pipes (14), the front side of the third U-shaped pipe (10) is fixedly connected with a liquid circulating pump (12), the left output end of the third U-shaped pipe (10) is connected with the left input end of the first U-shaped pipe (8) through a group of connecting pipes (14), the assembly mounting bin is characterized in that a liquid adding pump (13) is fixedly connected to the middle upper portion of the left side wall inside the assembly mounting bin (5), a liquid inlet pipe (22) is fixedly connected to the input end of the front side of the liquid adding pump (13), an auxiliary pipe (16) is fixedly connected to the output end of the rear side of the liquid adding pump (13), a blocking ring (19) is fixedly connected to the center inside of the auxiliary pipe (16), a connecting shaft column (17) is arranged inside the auxiliary pipe (16), a bottom limiting disc (18) is fixedly connected to the rear side end of the connecting shaft column (17), a conical blocking block (21) is fixedly connected to the front side end of the connecting shaft column (17), a spring (20) is fixedly connected to the rear side end of the conical blocking block (21), a liquid adding pipe (15) is fixedly connected to the rear side end of the auxiliary pipe (16), a butt joint pipe (14) is fixedly connected to the rear side end of the liquid adding pipe (15), a fixed wind pipe support (7) is fixedly connected to the center of the top wall of the assembly mounting bin (5), the top of the fixed air pipe frame (7) is fixedly connected with a driving fan (3).
2. The auxiliary cooling device for the high-pressure hydrogenation machine according to claim 1, wherein: the middle lower parts of the front side wall and the rear side wall of the hydrogenation machine body (1) are provided with a group of exhaust windows (4).
3. The auxiliary cooling device for the high-pressure hydrogenation machine according to claim 1, wherein: the middle upper parts of the front side wall and the rear side wall of the hydrogenation machine body (1) are provided with a group of air inlet windows (2).
4. The auxiliary cooling device for the high-pressure hydrogenation machine according to claim 1, wherein: the liquid inlet pipe (22) penetrates through the left side wall of the hydrogenation machine body (1) and extends to the interior of the assembly mounting bin (5).
5. The auxiliary cooling device for the high-pressure hydrogenation machine according to claim 1, wherein: the output end and the input end of the liquid circulating pump (12) are respectively and fixedly connected with a third U-shaped pipe (10).
6. The auxiliary cooling device for the high-pressure hydrogenation machine according to claim 1, wherein: the right output part of the liquid feeding pipe (15) penetrates through the left side wall of the butt joint pipe (14).
7. The auxiliary cooling device for the high-pressure hydrogenation machine according to claim 1, wherein: the bottom limiting disc (18) is arranged behind the blocking ring (19), and the diameter of the outer circle of the bottom limiting disc (18) is larger than that of the inner circle of the blocking ring (19).
8. The auxiliary cooling device for the high-pressure hydrogenation machine according to claim 1, wherein: the minimum diameter of the conical block (21) is larger than the input end diameter of the auxiliary pipe (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122356637.2U CN215983542U (en) | 2021-09-28 | 2021-09-28 | Auxiliary cooling device for high-pressure hydrogenation machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122356637.2U CN215983542U (en) | 2021-09-28 | 2021-09-28 | Auxiliary cooling device for high-pressure hydrogenation machine |
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| Publication Number | Publication Date |
|---|---|
| CN215983542U true CN215983542U (en) | 2022-03-08 |
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ID=80571365
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122356637.2U Expired - Fee Related CN215983542U (en) | 2021-09-28 | 2021-09-28 | Auxiliary cooling device for high-pressure hydrogenation machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215983542U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115451333A (en) * | 2022-09-14 | 2022-12-09 | 北京三盈氢能源装备有限公司 | Cooling system and cooling method of hydrogenation machine |
-
2021
- 2021-09-28 CN CN202122356637.2U patent/CN215983542U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115451333A (en) * | 2022-09-14 | 2022-12-09 | 北京三盈氢能源装备有限公司 | Cooling system and cooling method of hydrogenation machine |
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Granted publication date: 20220308 |