Heat exchange system for hydrogenation machine

Abstract

The heat exchange system comprises a plurality of sleeve units which are arranged in a box body and connected end to end, a temperature transmitting unit and a pressure transmitting unit are arranged at the inlet ends of the connected sleeve units, a temperature transmitting unit is arranged at the outlet ends of the connected sleeve units, and each sleeve unit comprises a first vertical pipe and a second vertical pipe which are arranged in parallel. A transverse pipe allowing cooling liquid to flow through is arranged between the first vertical pipe and the second vertical pipe, and the first vertical pipe, the second vertical pipe and the transverse pipe are all double-layer pipes. The sleeve unit is respectively connected with the temperature transmitter and the pressure transmitter, the temperature transmitter can monitor and control the temperature of hydrogen at the hydrogen inlet and the hydrogen outlet, and the pressure transmitter monitors the pressure change of cooling liquid and senses the pressure of fluid in a cooling water pipeline, so that the problem of unbalanced regulation and control when the pressure is lost is solved; the sleeve units are arranged in the box body, the double doors are reserved at the two ends of the box body respectively, and the overall structure is easy to disassemble, convenient to install and high in practicability.

Description

Technical Field

[0001] The utility model belongs to the technical field of hydrogenation heat exchange, in particular to a heat exchange system for a hydrogenation machine. Background Art

[0002] In a hydrogen refueling station, the internal energy and temperature of hydrogen increase after being pressurized. It is necessary to install heat exchange equipment in the hydrogen refueling station to cool the pressurized hydrogen so that the temperature of the hydrogen meets the usage requirements.

[0003] For example, a hydrogen refueling station heat exchanger disclosed in the Chinese utility model patent with authorization announcement number CN208779984U includes several U-shaped tubes with a sleeve structure arranged vertically, a high-pressure tube is arranged inside the tube, and a cooling channel is formed between the high-pressure tube and the U-shaped tube. A soft connecting tube and a high-pressure connecting tube are provided on one side of adjacent U-shaped tubes. The soft connecting tube connects the cooling channels on one side of adjacent U-shaped tubes, and several U-shaped tubes are connected through the soft connecting tube to form a continuous cooling channel. One end of the cooling channel is a cooling water inlet, and the other end is a cooling water outlet. The high-pressure connecting tube connects the high-pressure tubes on one side of adjacent U-shaped tubes, and several U-shaped tubes are connected through the high-pressure connecting tube to form a continuous high-pressure hydrogen channel. One end of the high-pressure hydrogen channel is a hydrogen inlet, and the other end is a hydrogen outlet.

[0004] In the above-mentioned prior art, the U-shaped tube is used to increase the heat exchange stroke and save the use space, but it has the following disadvantages:

[0005] 1. During the continuous pressurization process, the internal hydrogen pipe section has an unbalanced temperature exchange with the fluid pressure of the heat exchanger U-shaped pipe section, resulting in low heat exchange efficiency of the overall system;

[0006] 2. The U-shaped tube is difficult to manufacture and process, the wall thickness at the bend is not easy to unify, the molding quality is low, the later maintenance cost of the U-shaped tube is high, and the entire tube needs to be replaced.

[0007] Therefore, how to effectively solve the problem of unbalanced temperature exchange between the internal hydrogen pipe section and the U-shaped pipe section of the heat exchanger under the fluid pressure during continuous pressurization, resulting in low heat exchange efficiency of the overall system, difficult production and processing of the U-shaped pipe, and high subsequent maintenance costs, is a technical problem that needs to be solved urgently. Utility Model Content

[0008] In response to the deficiencies in the above-mentioned background technology, the present invention proposes a heat exchange system for a hydrogenator, which solves the problems of difficult manufacturing and processing of U-shaped tubes, high subsequent maintenance costs of U-shaped tubes, inconvenient installation due to the connection of adjacent U-shaped tubes by flexible connecting tubes, and inability to continuously pressurize the heat exchanger.

[0009] The technical solution of this application is:

[0010] A heat exchange system for a hydrogenator includes a plurality of sleeve units connected end to end and arranged in a box body, wherein the inlet ends of the connected sleeve units are provided with a temperature transmitting unit and a pressure transmitting unit, and the outlet ends are provided with a temperature transmitting unit, the sleeve units include a vertical pipe 1 and a vertical pipe 2 arranged in parallel, a horizontal pipe for cooling liquid to flow through is provided between the vertical pipe 1 and the vertical pipe 2, and the vertical pipe 1, the vertical pipe 2 and the horizontal pipe are all double-layer pipes.

[0011] Furthermore, both ends of the vertical pipe 1 and the vertical pipe 2 are provided with high-pressure valve blocks, and high-pressure pipe 1 is connected between the high-pressure valve blocks at one end of the vertical pipe 1 and the vertical pipe 2, and high-pressure pipe 2 is connected between the high-pressure valve blocks at the other ends of the vertical pipe 1 and the vertical pipe 2 and the high-pressure valve blocks in the adjacent casing unit, and a horizontal pipe for cooling liquid to flow through is provided between the vertical pipe 1 and the vertical pipe 2. Each set of casing units is provided with high-pressure valve blocks at both ends, which can maintain continuous pressurized operation; the casing unit forms a flow channel through the vertical pipe 1, the vertical pipe 2, and the horizontal pipe, which is easy to manufacture and does not require bending, and the casing quality is guaranteed. It is also easy to install and disassemble; during later maintenance, only the parts that need to be replaced in the casing unit need to be replaced, which is convenient for later maintenance and reduces maintenance costs; the casing unit is placed in a box, and the outer shell is simple and practical, with reserved double doors at both ends of the box. The overall structure is easy to disassemble, easy to install, and highly practical.

[0012] Furthermore, the vertical pipe 1, the vertical pipe 2, and the horizontal pipe are all hard pipes.

[0013] Furthermore, a support unit is connected between the sleeve units, and the support unit includes a cross bar arranged between the vertical pipe 1 and the vertical pipe 2.

[0014] Furthermore, the vertical pipe 2 arranged at the inlet end is connected to the hydrogen inlet through the high-pressure pipe 2, and the vertical pipe 2 arranged at the outlet end is connected to the hydrogen outlet through the high-pressure pipe 2. The temperature transmitting unit includes temperature transmitters respectively arranged at the hydrogen inlet and the hydrogen outlet.

[0015] Furthermore, the pressure transmitting unit includes a pressure transmitter arranged on the vertical pipe 2 at the inlet end.

[0016] Furthermore, a cooling liquid outlet is provided on the vertical pipe 2 arranged at the inlet end, and a cooling liquid inlet is provided on the vertical pipe 2 arranged at the outlet end.

[0017] Furthermore, the hydrogen inlet and the hydrogen outlet are arranged on the same end surface, and the cooling liquid outlet and the cooling liquid inlet are arranged on the same end surface.

[0018] Furthermore, manual stop valves are provided at the cooling liquid outlet and the cooling liquid inlet for easy operation.

[0019] Furthermore, the double-layer tube includes an inner tube for gas flow, and an outer tube for cooling liquid flow is arranged outside the inner tube. The interlayer between the outer tube and the inner tube is a cooling liquid circulation flow area.

[0020] The specific beneficial effects of the present utility model include:

[0021] 1. The casing units are respectively connected to the temperature transmitter and the pressure transmitter. The temperature transmitter can monitor and control the hydrogen temperature at the hydrogen inlet and the hydrogen outlet, and the pressure transmitter monitors the pressure change of the cooling liquid to sense the pressure of the cooling water pipeline fluid, thereby solving the problem of unbalanced regulation when the pressure is missing;

[0022] 2. High-pressure valve blocks are arranged at both ends of each group of casing units, and the supercharging operation can be continuously maintained;

[0023] 3. The casing unit forms a flow channel through the rigid vertical pipes I, II and the horizontal pipe, which is convenient to manufacture without bending. The quality of the casing is guaranteed, and it is also convenient for installation, disassembly and has a long service life;

[0024] 4. During later maintenance, only the parts that need to be replaced in the casing unit need to be replaced, which is convenient for later maintenance and reduces the maintenance cost;

[0025] 5. The casing unit is placed in the box body, and the outer shell function is simple and practical. There are double doors reserved at both ends of the box body, and the overall structure is easy to disassemble, convenient to install and highly practical;

[0026] 6. The support unit makes the connection between adjacent casing units firm and has strong stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present utility model, the drawings required for description in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0028] Figure 1 It is a schematic diagram of the assembly relationship between the box body and the casing unit in the present utility model;

[0029] Figure 2 It is a schematic diagram of the assembly relationship between several casing units in the present utility model;

[0030] Figure 3 It is a schematic diagram of a single casing unit in the present utility model;

[0031] Figure 4 It is Figure 2 The enlarged view at A in

[0032] Description of Figure Numbers:

[0033] 0. Box body; 1. Casing unit; 2. Support unit;

[0034] 10. Horizontal pipe; 11. Vertical pipe 1; 12. Vertical pipe 2;

[0035] 13. High pressure valve block;

[0036] 14. High-pressure pipe 1; 15. High-pressure pipe 2;

[0037] 16. Hydrogen inlet; 17. Hydrogen outlet;

[0038] 19. Temperature transmitter; 20. Pressure transmitter;

[0039] 21. Cooling liquid outlet; 22. Cooling liquid inlet;

[0040] 23. Manual stop valve. DETAILED DESCRIPTION

[0041] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0042] A heat exchange system for a hydrogenator is provided, comprising several end-to-end connected casing units 1 arranged in a housing 0, wherein the inlet ends of the connected casing units 1 are provided with a temperature transmitting unit and a pressure transmitting unit, and the outlet ends are provided with a temperature transmitting unit. The casing units 1 include a vertical pipe 11 and a vertical pipe 2 12 arranged in parallel, and a horizontal pipe 10 for cooling liquid to flow through is provided between the vertical pipe 11 and the vertical pipe 2 12. The vertical pipe 11, the vertical pipe 2 12, and the horizontal pipe 10 are all double-layer pipes.

[0043] On the basis of the above embodiment, as a preferred embodiment, Figure 3As shown, both ends of the vertical pipe 11 and the vertical pipe 2 12 are provided with high-pressure valve blocks 13. A high-pressure pipe 14 is connected between the high-pressure valve blocks 13 at one end of the vertical pipe 11 and the vertical pipe 2 12. The high-pressure valve blocks 13 at the other ends of the vertical pipe 11 and the vertical pipe 2 12 are connected to the high-pressure valve blocks 13 in the adjacent casing unit 1 via a high-pressure pipe 2 15. Each set of casing units is provided with high-pressure valve blocks at both ends, which can maintain continuous pressurized operation. The casing unit forms a flow channel through the vertical pipe 1, the vertical pipe 2, and the horizontal pipe. It is easy to manufacture and does not require bending. The casing quality is guaranteed and it is also easy to install and disassemble. During later maintenance, only the parts that need to be replaced in the casing unit need to be replaced, which facilitates later maintenance and reduces maintenance costs. The casing unit is placed in a box. The outer shell is simple and practical. There are reserved double doors at each end of the box. The overall structure is easy to disassemble, easy to install, and highly practical.

[0044] The utility model is an external device that is installed independently. The sleeve unit 1 is placed in the box body 0. The outer shell is simple and practical. There are reserved double doors at both ends of the box body 0. The overall structure is easy to disassemble, easy to install, and highly practical.

[0045] Specifically, if Figure 1 - Figure 2 As shown, there are five sets of sleeve units 1 connected end to end in the box 0, and a pipeline circulation is formed in the connected sleeve units 1. Cooling liquid and hydrogen circulate in the pipeline, and the cooling liquid takes away the heat in the hydrogen pipeline, thereby realizing heat exchange.

[0046] On the basis of the above embodiment, as a preferred embodiment, the vertical pipe 1 1 , the vertical pipe 2 12 , and the horizontal pipe 10 are all hard pipes, which are convenient for installation and disassembly and have a long service life.

[0047] On the basis of the above embodiment, as a preferred embodiment, the support unit 2 includes a cross bar arranged between the vertical pipe 1 11 and the vertical pipe 2 12 .

[0048] Specifically, a U-shape is formed between vertical pipe 11, vertical pipe 2 12, and horizontal pipe 10, and a U-shape is formed between vertical pipe 11, vertical pipe 2 12, horizontal pipe 10, and cross bar. Vertical pipe 11 and adjacent vertical pipe 2 12 are also connected with cross pipe 10 and cross bar to form a circulation pipeline and strengthen the connection between the casing units 1.

[0049] On the basis of the above embodiment, as a preferred embodiment, the vertical pipe 12 arranged at the inlet end is connected to the hydrogen inlet 16 through the high-pressure pipe 15, and the vertical pipe 12 arranged at the outlet end is connected to the hydrogen outlet 17 through the high-pressure pipe 15. The temperature transmitting unit includes temperature transmitters 19 respectively arranged at the hydrogen inlet 16 and the hydrogen outlet 17. The temperature transmitter 19 is used to monitor and control the hydrogen temperature of the hydrogen inlet 16 and the hydrogen outlet 17.

[0050] On the basis of the above embodiment, as a preferred embodiment, the pressure transmitting unit includes a pressure transmitter 20 arranged on the vertical pipe 2 12 at the inlet end. The pressure transmitter 20 monitors the pressure changes of the cooling liquid and senses the pressure of the cooling water pipeline fluid, thereby solving the problem of unbalanced regulation when pressure is lost.

[0051] On the basis of the above embodiment, as a preferred embodiment, the second vertical pipe 12 arranged at the inlet end is provided with a cooling liquid outlet 21, and the second vertical pipe 12 arranged at the outlet end is provided with a cooling liquid inlet 22.

[0052] Based on the above embodiment, as a preferred embodiment, the hydrogen inlet 16 and the hydrogen outlet 17 are arranged on the same end surface, and the cooling liquid outlet 21 and the cooling liquid inlet 22 are arranged on the same end surface.

[0053] Preferably, if Figure 4 As shown, the hydrogen inlet 16 and the hydrogen outlet 17 are arranged on the same horizontal plane, and the cooling liquid outlet 21 and the cooling liquid inlet 22 are arranged on the same horizontal plane.

[0054] Specifically, if Figure 2 As shown by the arrows in the middle, the cooling liquid enters the vertical pipe 2 12, the horizontal pipe 10, the vertical pipe 1 11, the adjacent sleeve unit 1 and so on from the cooling liquid inlet 22 in sequence. The circulation line is S-shaped and finally flows to the cooling liquid outlet 21. The flow direction of the hydrogen is opposite to the flow direction of the cooling liquid.

[0055] On the basis of the above embodiment, as a preferred embodiment, manual stop valves 23 are provided at the cooling liquid outlet 21 and the cooling liquid inlet 22 for easy operation.

[0056] On the basis of the above embodiments, as a preferred embodiment, the first vertical pipe 11, the second vertical pipe 12, and the horizontal pipe 10 are all double-layer pipes. An inner pipe for gas flow is provided inside each of the first vertical pipe 11, the second vertical pipe 12, and the horizontal pipe 10. An outer pipe for cooling liquid flow is provided outside the inner pipe. The interlayer between the outer pipe and the inner pipe is a cooling liquid circulation flow area.

[0057] The details not described in detail in the present utility model are all well-known conventional technical means in the art.

[0058] The above content shows and describes the basic principles, main features and the beneficial effects of the present utility model. The above is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A heat exchange system for a hydrogen filling machine, characterized in that: The invention comprises a plurality of sleeve units (1) connected end to end and arranged in a box body (0), wherein the inlet end of the connected sleeve units (1) is provided with a temperature transmitter unit and a pressure transmitter unit, and the outlet end is provided with a temperature transmitter unit, the sleeve unit (1) comprises a vertical pipe 1 (11) and a vertical pipe 2 (12) arranged in parallel, a horizontal pipe (10) for cooling liquid to flow through is arranged between the vertical pipe 1 (11) and the vertical pipe 2 (12), and the vertical pipe 1 (11), the vertical pipe 2 (12) and the horizontal pipe (10) are all double-layer pipes.

2. The heat exchange system for a hydrogen refueling machine according to claim 1, characterized in that: Both ends of the vertical pipe 1 (11) and the vertical pipe 2 (12) are provided with high-pressure valve blocks (13); a high-pressure pipe 1 (14) is connected between the high-pressure valve blocks (13) at one end of the vertical pipe 1 (11) and the vertical pipe 2 (12); and a high-pressure pipe 2 (15) is connected between the high-pressure valve blocks (13) at the other end of the vertical pipe 1 (11) and the vertical pipe 2 (12) and the high-pressure valve blocks (13) in the adjacent casing unit (1).

3. The heat exchange system for a hydrogen refueling machine according to claim 2, characterized in that: The vertical pipe 1 (11), the vertical pipe 2 (12), and the horizontal pipe (10) are all hard pipes.

4. The heat exchange system for a hydrogen filling machine according to claim 2 or 3, characterized in that: A support unit (2) is connected between the sleeve units (1), and the support unit (2) comprises a crossbar arranged between the vertical pipe 1 (11) and the vertical pipe 2 (12).

5. The heat exchange system for a hydrogen filling machine according to claim 4, wherein: The second vertical pipe (12) provided at the inlet end is connected to the hydrogen inlet (16) via the second high-pressure pipe (15), and the second vertical pipe (12) provided at the outlet end is connected to the hydrogen outlet (17) via the second high-pressure pipe (15). The temperature transmitter unit includes temperature transmitters (19) respectively provided at the hydrogen inlet (16) and the hydrogen outlet (17).

6. The heat exchange system for a hydrogen refueling machine according to claim 5, characterized in that: The pressure transmitter unit includes a pressure transmitter (20) arranged on a second vertical pipe (12) at the inlet end.

7. The heat exchange system for a hydrogen refueling machine according to claim 5, characterized in that: The second vertical pipe (12) arranged at the inlet end is provided with a cooling liquid outlet (21), and the second vertical pipe (12) arranged at the outlet end is provided with a cooling liquid inlet (22).

8. The heat exchange system for a hydrogen filling machine according to claim 7, wherein: The hydrogen inlet (16) and the hydrogen outlet (17) are arranged on the same end surface, and the cooling liquid outlet (21) and the cooling liquid inlet (22) are arranged on the same end surface.

9. The heat exchange system for a hydrogen filling machine according to claim 7 or 8, characterized in that: Manual stop valves (23) are provided at the cooling liquid outlet (21) and the cooling liquid inlet (22).

10. The heat exchange system for a hydrogen refueling machine according to any one of claims 1-3, 5-8, characterized in that: The double-layer tube includes an inner tube for gas flow, and an outer tube for cooling liquid flow is provided outside the inner tube.

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