Hydrogen supply refrigerating device

Abstract

The utility model discloses a hydrogen supply refrigerating device which comprises a heat exchange box, a plurality of ventilation openings are formed in the two opposite side walls of the heat exchange box, a stainless steel coil pipe is arranged in the heat exchange box, a cleaning frame is connected in the heat exchange box in a sliding mode, a plurality of cleaning brush bristles are fixedly connected to the inner wall of the cleaning frame, and the cleaning brush bristles are fixedly connected to the inner wall of the cleaning frame. A reciprocating lead screw is rotationally connected to the inner wall of the heat exchange box. According to the stainless steel coil pipe cleaning device, the cleaning frame with the cleaning bristles is arranged and can be started at regular time through the servo motor, so that the reciprocating lead screw is driven to rotate, the lead screw nut can push the cleaning frame to reciprocate, the purpose of cleaning the stainless steel coil pipe at regular intervals is achieved, and isolators adhered to the outer wall of the stainless steel coil pipe can be swept away at regular intervals; therefore, the heat conduction capability of the stainless steel coil pipe is ensured, and the refrigeration effect of the system is ensured.

Description

Technical Field

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

[0002] The hydrogen-air precooling system consists of a refrigeration compressor, evaporator, oil separator, flow control, heat exchanger, pressure vessel, solenoid valve, pipeline and other parts.

[0003] The gas part is mainly transported through 316 stainless steel coils, which absorb or release heat by utilizing their good thermal conductivity. At the same time, the stainless steel coils are placed in a cabin with an air duct. As the equipment is used for a longer time, air continuously enters the cabin through the air duct. Dust and impurities in the air easily adhere to the stainless steel coils and gradually cover the outer wall of the stainless steel coils, creating a layer of insulation between the air and the stainless steel coils. The thermal conductivity of such insulation is poor, which greatly reduces the overall cooling effect of the system. In view of this, the present application proposes a hydrogen supply refrigeration device. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and proposes a hydrogen supply refrigeration device.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A hydrogen supply refrigeration device comprises a heat exchange box, wherein two opposite side walls of the heat exchange box are provided with a plurality of ventilation holes, a stainless steel coil is arranged inside the heat exchange box, a cleaning frame is slidably connected inside the heat exchange box, a plurality of cleaning bristles are fixedly connected to the inner wall of the cleaning frame, a reciprocating screw is rotatably connected to the inner wall of the heat exchange box, and a screw nut cooperating with the reciprocating screw is provided on the reciprocating screw, the screw nut is fixedly connected to the cleaning frame through a connecting rod, a servo motor is fixedly installed on the side wall of the heat exchange box, and the output shaft of the servo motor is fixedly connected to the reciprocating screw.

[0007] Preferably, a plurality of rotating seats are fixedly connected to the inner top of the heat exchange box, and a spoiler is rotatably connected to the side wall of the rotating seat.

[0008] Preferably, a guide seat is fixedly connected to the inner bottom of the heat exchange box, two guide grooves are provided at the upper end of the guide seat, and a walking mechanism is installed at the lower end of the cleaning frame, and the walking mechanism is used for the cleaning frame to stably walk along the guide seat.

[0009] Preferably, the walking mechanism comprises a bracket and walking wheels, wherein the bracket is fixedly connected to the lower end of the cleaning frame, the walking wheels are rotatably connected to the side walls of the bracket, and the walking wheels are rollingly arranged in the guide grooves.

[0010] Preferably, one end of the connecting rod is fixedly connected to the side wall of the lead screw nut, and the other end of the connecting rod is fixedly connected to the side wall of the cleaning frame.

[0011] Preferably, the distance between two adjacent ventilation openings is 10 cm.

[0012] The utility model has the following beneficial effects:

[0013] 1. By setting a cleaning frame with cleaning bristles, the servo motor can be started regularly to drive the reciprocating screw to rotate, so that the screw nut can push the cleaning frame to move back and forth to achieve the purpose of regular cleaning of the stainless steel coil. The insulating materials adhering to the outer wall of the stainless steel coil can be regularly removed to ensure the thermal conductivity of the stainless steel coil, thereby ensuring the cooling effect of the system.

[0014] 2. By setting a rotating seat and a spoiler, the cleaning frame can continuously touch the spoilers during the movement, so that it swings back and forth under the joint action of gravity, which can speed up the air flow in the heat exchange box and improve the heat exchange rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a structural schematic diagram of a hydrogen supply refrigeration device proposed by the utility model;

[0016] Figure 2 This is a schematic diagram of the connection structure of the cleaning frame, guide seat, walking mechanism, reciprocating screw, screw nut and connecting rod in a hydrogen supply refrigeration device proposed by the utility model;

[0017] Figure 3 for Figure 2 A schematic diagram of the structure enlargement at point A;

[0018] In the figure: 1 heat exchange box, 2 vent, 3 stainless steel coil, 4 guide seat, 5 cleaning frame, 6 rotating seat, 7 spoiler, 8 cleaning brush, 9 servo motor, 10 lead screw nut, 11 bracket, 12 walking wheel, 13 guide groove, 14 reciprocating lead screw, 15 connecting rod. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0020] The common hydrogen-air precooling system currently consists of a refrigeration compressor, an evaporator, an oil separator, a flow control, a heat exchanger, a pressure vessel, a solenoid valve, a pipeline and other parts. The hydrogen-air precooling system can ensure the cooling capacity of the air and hydrogen precooling units within the temperature control range of -60℃~90℃ (hydrogen 100~6000SLPM, air 200~20000SLPM, response time: ≤10S temperature fluctuation: ±2℃ temperature stabilization time: 3min, pipeline 316L) to meet the 300kW fuel cell engine system operating at rated power conditions at -40℃ for at least 2 hours. The utility model mainly improves the design of the pipeline part of the hydrogen-air precooling system. The details are as follows:

[0021] Reference Figure 1-3 A hydrogen supply refrigeration device includes a heat exchange box 1. Two opposite side walls of the heat exchange box 1 are each provided with a plurality of vents 2, and the distance between two adjacent vents 2 is 10 cm.

[0022] A stainless steel coil 3 is provided in the heat exchange box 1, and a cleaning frame 5 is slidably connected in the heat exchange box 1. A plurality of cleaning bristles 8 are fixedly connected to the inner wall of the cleaning frame 5. A reciprocating screw 14 is rotatably connected to the inner wall of the heat exchange box 1, and the reciprocating screw 14 is provided with a screw nut 10 that cooperates with it. The screw nut 10 is fixedly connected to the cleaning frame 5 through a connecting rod 15, one end of the connecting rod 15 is fixedly connected to the side wall of the screw nut 10, and the other end of the connecting rod 15 is fixedly connected to the side wall of the cleaning frame 5.

[0023] A servo motor 9 is fixedly mounted on the side wall of the heat exchange box 1, and the output shaft of the servo motor 9 is fixedly connected to the reciprocating screw 14. Specifically, the output shaft of the servo motor 9 can be connected to the reciprocating screw 14 by providing a coupling.

[0024] A plurality of rotating seats 6 are fixedly connected to the inner top of the heat exchange box 1, and a spoiler 7 is rotatably connected to the side wall of the rotating seat 6. A guide seat 4 is fixedly connected to the inner bottom of the heat exchange box 1, and two guide grooves 13 are provided at the upper end of the guide seat 4. A walking mechanism is installed at the lower end of the cleaning frame 5, and the walking mechanism is used for the cleaning frame 5 to stably walk along the guide seat 4.

[0025] The walking mechanism includes a bracket 11 and a walking wheel 12, wherein the bracket 11 is fixedly connected to the lower end of the cleaning frame 5, the walking wheel 12 is rotatably connected to the side wall of the bracket 11, and the walking wheel 12 is rollingly arranged in the guide groove 13. It should be noted that by setting the walking mechanism, on the one hand, the cleaning frame 5 can be limited so that it can only move in the horizontal direction, and then the screw nut 10 can be limited. When the reciprocating screw 14 rotates, the screw nut 10 will not rotate together. In addition, the walking mechanism can also help the cleaning frame 5 to stably move in the horizontal direction.

[0026] In the utility model, the servo motor 9 can be started once at regular intervals to drive the reciprocating screw 14 to rotate. Since the screw nut 10 is fixed to the cleaning frame 5 by the connecting rod 15, the cleaning frame 5 is restricted by the walking mechanism below to move along the guide seat 4.

[0027] Therefore, the screw nut 10 can only move laterally, and the screw nut 10 will drive the cleaning frame 5 to move back and forth laterally through the connecting rod 15. The cleaning bristles 8 on the inside of the cleaning frame 5 can quickly remove dust and other insulating materials adhering to the surface of the stainless steel coil 3, so that the outer wall of the stainless steel coil 3 can fully contact and exchange heat with the air, thereby ensuring the good thermal conductivity of the stainless steel coil 3, and then ensuring the refrigeration effect of the entire refrigeration system.

[0028] In addition, when the cleaning frame 5 moves laterally, its upper side will continuously touch the spoilers 7 and force the spoilers 7 to deflect. When the cleaning frame 5 leaves, the spoilers 7 can droop and reset themselves under the action of gravity, so that the spoilers 7 can swing back and forth, which can speed up the air flow in the heat exchange box 1, promote heat exchange between the air and the stainless steel coil 3, and improve the cooling rate of the refrigeration system.

[0029] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A hydrogen supply refrigeration device, comprising a heat exchange box (1), characterized in that: The heat exchange box (1) is provided with a plurality of ventilation holes (2) on two opposite side walls. A stainless steel coil (3) is provided inside the heat exchange box (1). A cleaning frame (5) is slidably connected inside the heat exchange box (1). A plurality of cleaning bristles (8) are fixedly connected to the inner wall of the cleaning frame (5). A reciprocating screw (14) is rotatably connected to the inner wall of the heat exchange box (1). A screw nut (10) cooperating therewith is provided on the reciprocating screw (14). The screw nut (10) is fixedly connected to the cleaning frame (5) via a connecting rod (15). A servo motor (9) is fixedly mounted on the side wall of the heat exchange box (1). The output shaft of the servo motor (9) is fixedly connected to the reciprocating screw (14).

2. A hydrogen supply refrigeration device according to claim 1, characterized in that: A plurality of rotating seats (6) are fixedly connected to the inner top of the heat exchange box (1), and a spoiler (7) is rotatably connected to the side wall of the rotating seat (6).

3. A hydrogen supply refrigeration device according to claim 1, characterized in that: The inner bottom of the heat exchange box (1) is fixedly connected to a guide seat (4), the upper end of the guide seat (4) is provided with two guide grooves (13), and the lower end of the cleaning frame (5) is provided with a walking mechanism, the walking mechanism is used for the cleaning frame (5) to stably walk along the guide seat (4).

4. A hydrogen supply refrigeration device according to claim 3, characterized in that: The walking mechanism comprises a bracket (11) and a walking wheel (12), wherein the bracket (11) is fixedly connected to the lower end of the cleaning frame (5), the walking wheel (12) is rotatably connected to the side wall of the bracket (11), and the walking wheel (12) is rollingly arranged in the guide groove (13).

5. The hydrogen supply refrigeration device according to claim 1, characterized in that: One end of the connecting rod (15) is fixedly connected to the side wall of the lead screw nut (10), and the other end of the connecting rod (15) is fixedly connected to the side wall of the cleaning frame (5).

6. A hydrogen supply refrigeration device according to claim 1, characterized in that: The distance between two adjacent ventilation openings (2) is 10 cm.

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