Hydrogen cooling device

Abstract

The utility model discloses a hydrogen cooling device, which belongs to the technical field of hydrogen treatment equipment and comprises a cooling tank, a first cooling coil is arranged in the cooling tank through a fixing piece, a protective sleeve is arranged on the outer side of the cooling tank, a second cooling coil is arranged between the cooling tank and the protective sleeve, and an air inlet pipe is arranged at the top of the cooling tank. An air outlet pipe is arranged on the lower portion of the cooling tank and provided with a temperature sensor, a three-way valve is arranged at one end of the air outlet pipe, an exhaust pipe is arranged on a second connector of the three-way valve, and a third connector of the three-way valve is communicated with the air inlet pipe through a connecting pipe. The first cooling coil is mounted in the cooling tank, the second cooling coil is mounted outside the cooling tank, and liquid nitrogen is introduced into the first cooling coil and the second cooling coil to cool high-temperature hydrogen; the temperature sensor detects the temperature of the hydrogen, and when the filling requirement is not met, the three-way valve is controlled to enable the hydrogen to enter the cooling tank through the gas inlet pipe for secondary cooling.

Description

Technical Field

[0001] The utility model relates to the technical field of hydrogen processing equipment, in particular to a hydrogen cooling device. Background Art

[0002] In summer, when a hydrogen compressor compresses hydrogen, the exhaust temperature is often high, and the high-temperature hydrogen is difficult to fill. The hydrogen needs to be cooled before filling. The existing cooling method is to pass the hydrogen pipeline into a water pool and use the cold water in the water pool to cool the high-temperature hydrogen in the hydrogen pipeline. This method requires a long cooling time, affects the hydrogen filling process, and has low work efficiency. Utility Model Content

[0003] The utility model aims to provide a hydrogen cooling device to solve the problems of the existing hydrogen cooling method, which has a long cooling time, affects the hydrogen filling process and has low working efficiency.

[0004] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0005] The utility model discloses a hydrogen cooling device, comprising a cooling tank, wherein a first cooling coil is arranged inside the cooling tank through a fixing piece, a protective sleeve is arranged outside the cooling tank, a second cooling coil is arranged between the cooling tank and the protective sleeve, an air inlet pipe is arranged on the top of the cooling tank, an air outlet pipe is arranged at the bottom of the cooling tank, a temperature sensor is arranged on the air outlet pipe, a three-way valve is arranged at one end of the air outlet pipe away from the cooling tank, an exhaust pipe is arranged at the second connecting port of the three-way valve, and the third connecting port of the three-way valve is connected with the air inlet pipe through a connecting pipe.

[0006] Furthermore, the fixing member includes a fixing plate, one end of which is connected to the inner wall of the cooling tank, two positioning plates are slidably arranged on the fixing plate, and positioning bolts are arranged below the positioning plate.

[0007] Furthermore, a slide groove is provided on the top surface of the fixing plate, a slider matching the slide groove is connected to the bottom surface of the positioning plate, a limiting groove is provided below the slide groove, and the positioning bolt passes through the limiting groove and is threadedly connected to the bottom surface of the slider.

[0008] Furthermore, the cross-sections of the slide groove and the slider are both set to be trapezoidal.

[0009] Furthermore, arc grooves are arranged on the opposite surfaces of the two positioning plates.

[0010] Furthermore, a top cover is provided on the top of the cooling tank.

[0011] Furthermore, the top surface of the top cover is provided with a lifting lug.

[0012] Furthermore, the bottom surface of the cooling tank is provided with supporting legs, and the bottom surfaces of the supporting legs are provided with adjusting feet.

[0013] Compared with the prior art, the beneficial technical effects of the utility model are:

[0014] The utility model connects a cooling tank through a pipeline at the exhaust port of a hydrogen compressor, and passes high-temperature hydrogen into the cooling tank for cooling; a first cooling coil is installed inside the cooling tank, and a second cooling coil is installed outside the cooling tank; liquid nitrogen is passed into the first cooling coil and the second cooling coil to cool the high-temperature hydrogen; the high-temperature hydrogen is fully cooled under the action of the two cooling coils, and the hydrogen is cooled by liquid nitrogen, thereby improving the cooling effect, shortening the cooling time, and improving the cooling efficiency; a temperature sensor is installed on the air outlet pipe, and the temperature of the hydrogen can be detected. When the filling requirement is not met, the hydrogen is returned to the air inlet pipe by controlling the three-way valve, and enters the cooling tank through the air inlet pipe for secondary cooling, thereby further improving the cooling effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The utility model will be further described below in conjunction with the accompanying drawings.

[0016] Figure 1 This is a front view of the hydrogen cooling device of the utility model;

[0017] Figure 2 It is a cross-sectional view of the utility model along the AA direction;

[0018] Figure 3 It is a three-dimensional structural schematic diagram of the fixing member of the utility model;

[0019] Explanation of the accompanying drawings: 1. Cooling tank; 101. Top cover; 2. Air inlet pipe; 3. Air outlet pipe; 4. First cooling coil; 401. First liquid nitrogen inlet; 402. First liquid nitrogen outlet; 5. Protective cover; 6. Second cooling coil; 601. Second liquid nitrogen inlet; 602. Second liquid nitrogen outlet; 7. Fixing piece; 701. Fixing plate; 701-1. Slide groove; 701-2. Limiting groove; 702. Positioning plate; 703. Sliding block; 704. Positioning bolt; 8. Temperature sensor; 9. Three-way valve; 10. Exhaust pipe; 11. Connecting pipe; 12. Support leg; 13. Adjustment foot; 14. Lifting ear. DETAILED DESCRIPTION

[0020] like Figure 1-3As shown, a hydrogen cooling device comprises a cooling tank 1, wherein a first cooling coil 4 is installed inside the cooling tank 1 through a fixing member 7, a first liquid nitrogen inlet 401 and a first liquid nitrogen outlet 402 of the first cooling coil 4 extend to the top of the cooling tank 1, a protective sleeve 5 is installed on the outside of the cooling tank 1, a second cooling coil 6 is installed between the cooling tank 1 and the protective sleeve 5, a second liquid nitrogen inlet 601 and a second liquid nitrogen outlet 602 of the second cooling coil 6 extend to the outside of the protective sleeve 5, an air inlet pipe 2 is connected to the top of the cooling tank 1, the air inlet pipe 2 is communicated with the exhaust port of the hydrogen compressor through a pipeline, an air outlet pipe 3 is connected to the lower part of the cooling tank 1, a temperature sensor 8 is installed on the air outlet pipe 3, an end of the air outlet pipe 3 away from the cooling tank 1 is connected to a three-way valve 9, a second connecting port of the three-way valve 9 is connected to an exhaust pipe 10, the exhaust pipe 10 is communicated with a hydrogen filling device through a pipeline, and a third connecting port of the three-way valve 9 is communicated with the air inlet pipe 2 through a connecting pipe 11.

[0021] like Figure 3 As shown, the fixing member 7 includes a fixing plate 701, one end of which is connected to the inner wall of the cooling tank 1, and two positioning plates 702 are slidably arranged on the fixing plate 701, and arc grooves are arranged on the opposite surfaces of the two positioning plates 702, and a positioning bolt 704 is arranged below the positioning plate 702; specifically, a slide groove 701-1 is opened on the top surface of the fixing plate 701, and a slider 703 matching the slide groove 701-1 is connected to the bottom surface of the positioning plate 702, and the cross-sections of the slide groove 701-1 and the slider 703 are both set to trapezoidal, and a limiting groove 701-2 is connected to the bottom of the slide groove 701-1, and the positioning bolt 704 penetrates the limiting groove 701-2 and is threadedly connected to the bottom surface of the slider 703, and the cross-section of the limiting groove 701-2 is set to a convex shape.

[0022] The top of the cooling tank 1 is connected to a top cover 101 by bolts, and a sealing ring is installed at the connection between the top cover 101 and the cooling tank 1 to improve the sealing performance of the device.

[0023] Two lifting ears 14 are welded on the top surface of the top cover 101. After being used for a period of time, the top cover 101 is lifted up by a lifting device to clean the inside of the cooling tank 1. The bottom surface of the cooling tank 1 is set to be funnel-shaped, and a sewage pipe is also connected to the center of the bottom surface of the cooling tank 1 to facilitate the discharge of impurities generated by cleaning.

[0024] Four supporting legs 12 are connected to the bottom surface of the cooling tank 1, a cross bar is connected between two supporting legs 12 on the same side, and adjusting feet 13 are installed on the bottom surface of the supporting legs 12. The height of the supporting legs 12 can be fine-tuned by adjusting the feet 13 to ensure that the cooling tank 1 is placed stably on an uneven ground.

[0025] The working process of the utility model is as follows:

[0026] First, the air inlet pipe 2 is connected to the exhaust port of the hydrogen compressor through a pipeline, and the high-temperature hydrogen discharged by the hydrogen compressor enters the interior of the cooling tank 1. Liquid nitrogen is introduced into the first cooling coil 4 through the first liquid nitrogen inlet 401, and liquid nitrogen is introduced into the second cooling coil 6 through the second liquid nitrogen inlet 601. The first cooling coil 4 cools the high-temperature hydrogen inside the cooling tank 1, and the second cooling coil 6 cools the outer wall of the cooling tank 1 and the hydrogen. The liquid nitrogen in the two cooling coils cools the high-temperature hydrogen. The cooled hydrogen The gas enters the outlet pipe 3, and the temperature sensor 8 detects the temperature of the hydrogen. If the temperature meets the refilling requirement, the second connection port of the three-way valve 9 is opened, and the hydrogen enters the exhaust pipe 10. The exhaust pipe 10 is connected to the hydrogen filling device through a pipeline to fill the hydrogen. If the temperature does not meet the filling requirement, the third connection port of the three-way valve 9 is opened, and the hydrogen enters the connecting pipe 11, and re-enters the intake pipe 2 through the connecting pipe 11, and then enters the cooling tank for re-cooling, and the cooled exhaust gas is then filled.

[0027] The embodiments described above are only descriptions of the preferred methods of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should fall within the protection scope determined by the claims of the present invention.

Claims

1. A hydrogen cooling device, characterized in that: The invention comprises a cooling tank (1), wherein a first cooling coil (4) is arranged inside the cooling tank (1) via a fixing member (7), a protective sleeve (5) is arranged on the outside of the cooling tank (1), a second cooling coil (6) is arranged between the cooling tank (1) and the protective sleeve (5), an air inlet pipe (2) is arranged on the top of the cooling tank (1), an air outlet pipe (3) is arranged at the bottom of the cooling tank (1), a temperature sensor (8) is arranged on the air outlet pipe (3), a three-way valve (9) is arranged at one end of the air outlet pipe (3) away from the cooling tank (1), an exhaust pipe (10) is arranged at the second connection port of the three-way valve (9), and the third connection port of the three-way valve (9) is connected to the air inlet pipe (2) via a connecting pipe (11).

2. The hydrogen cooling device according to claim 1, characterized in that: The fixing member (7) comprises a fixing plate (701), one end of which is connected to the inner wall of the cooling tank (1), two positioning plates (702) are slidably arranged on the fixing plate (701), and positioning bolts (704) are arranged below the positioning plates (702).

3. The hydrogen cooling device according to claim 2, characterized in that: The top surface of the fixing plate (701) is provided with a slide groove (701-1), the bottom surface of the positioning plate (702) is connected with a slider (703) matching the slide groove (701-1), a limiting groove (701-2) is provided below the slide groove (701-1), and the positioning bolt (704) penetrates the limiting groove (701-2) and is threadedly connected to the bottom surface of the slider (703).

4. The hydrogen cooling device according to claim 3, characterized in that: The cross-sections of the slide groove (701-1) and the sliding block (703) are both set to be trapezoidal.

5. The hydrogen cooling device according to claim 2, characterized in that: Arc grooves are arranged on the opposite surfaces of the two positioning plates (702).

6. The hydrogen cooling device according to claim 1, characterized in that: A top cover (101) is provided on the top of the cooling tank (1).

7. The hydrogen cooling device according to claim 6, characterized in that: The top surface of the top cover (101) is provided with a lifting lug (14).

8. The hydrogen cooling device according to claim 1, characterized in that: The bottom surface of the cooling tank (1) is provided with a supporting leg (12), and the bottom surface of the supporting leg (12) is provided with an adjusting foot (13).

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