A hydrothermal device for high-power fuel cell testing

Abstract

The utility model discloses a kind of hydrothermal devices for high-power fuel cell test, it is related to fuel cell test equipment hydrothermal device technical field, including booster water supplement pump, the input of booster water supplement pump is provided with water tank water supply pipe, the output of booster water supplement pump is connected with water tank by water tank water supply solenoid valve, the one side of water tank bottom is provided with circulation pipeline, the outer wall of circulation pipeline is provided with hand valve, the outer wall of circulation pipeline near hand valve side is provided with first filter, the one end of circulation pipeline away from water tank is provided with circulating water pump, the water outlet of circulating water pump is connected with plate heat exchanger by water pipe.The utility model effectively controls the temperature of inner circulation water, satisfies the need of fuel cell performance test.

Description

Technical Field

[0001] This utility model relates to the technical field of hydrothermal devices for fuel cell testing equipment, and in particular to a hydrothermal device for testing high-power fuel cells. Background Technology

[0002] Hydrogen fuel cells are efficient, clean, environmentally friendly, and long-lasting power generation devices. In general, during the operation of a proton exchange membrane hydrogen fuel cell, the hydrogen gas entering from the anode has a significant impact on the cell's performance, with its flow rate and pressure requirements being crucial factors. When the internal pressure falls below the required range, the proton exchange membrane can dehydrate or even dry out. Therefore, controlling the temperature and flow rate of the circulating water becomes extremely important during the entire operation of the hydrogen fuel cell.

[0003] A search revealed a Chinese patent application with patent number 2019202482295, which discloses a bubbling humidifier and a fuel cell stack that utilize waste heat from a fuel cell stack for assisted humidification. The humidifier includes a humidifier housing; an air inlet pipe, an air riser filled with corrugated packing, and a demister are arranged sequentially from bottom to top along the axis of the humidifier housing; a heating rod is provided between the air riser and the inner wall of the humidifier housing; and a jacket with an inner cavity is provided on the inner wall of the humidifier housing.

[0004] With the rapid growth of the domestic fuel cell industry, the demand for fuel cell stack testing is constantly increasing. Importing fuel cell stack testing equipment from abroad is costly, and after-sales support is difficult. Furthermore, foreign manufacturers have limited production capacity, and many fuel cell companies are even facing the situation of not being able to place orders despite having the funds. Therefore, there is an urgent need for a hydrothermal device for testing high-power fuel cells to address the current urgent need for fuel cell testing equipment in the industry. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of poor circulating water temperature control in existing technologies by proposing a hydrothermal device for testing high-power fuel cells. Its advantage lies in effectively controlling the temperature of the internal circulating water, thus meeting the requirements for fuel cell performance testing.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A hydrothermal device for testing high-power fuel cells includes a booster pump, an input end of which is connected to a water tank supply pipe, an output end of which is connected to a water tank via a water tank supply solenoid valve, a circulation pipe on one side of the bottom of the water tank, a hand valve on the outer wall of the circulation pipe, a first filter on the outer wall of the circulation pipe near the hand valve, a circulation pump on the end of the circulation pipe away from the water tank, and a plate heat exchanger connected to the outlet end of the circulation pump via a water pipe. The outlet pipe of the plate heat exchanger is sequentially equipped with a temperature sensor and an internal circulating water turbine flow meter. The downstream pipe of the circulating water turbine flow meter is equipped with an internal circulating water inlet pipe, and the end of the water tank away from the booster water pump is equipped with an internal circulating water outlet pipe. An external circulation water inlet pipe is provided on one side of the plate heat exchanger. The external circulation water entering the plate heat exchanger passes through a second filter and an external circulation water solenoid valve before entering the plate heat exchanger.

[0007] The above technical solution works as follows: During use, a booster pump replenishes water to the water tank. After the manual valve is opened, the internal circulating water enters the downstream pipeline. The first filter effectively filters the deionized water in the water tank, effectively removing impurities mixed in the circulating water. The outlet pipeline of the plate heat exchanger contains a temperature sensor and an internal circulating turbine flow meter. The temperature sensor can effectively monitor the temperature of the internal circulating water, while the turbine flow meter can monitor the flow rate of the internal circulating water in real time, effectively ensuring the water flow rate during fuel cell performance testing. The internal circulating water flow rate is regulated by the frequency converter of the circulating water pump before entering the plate heat exchanger. The plate heat exchanger, connected to the external circulating water pipeline, allows the internal and external circulating water to exchange heat, thereby effectively controlling the temperature of the internal circulating water and meeting the requirements of fuel cell performance testing.

[0008] The present invention is further configured such that a water tank drain pipe is provided on the other side of the bottom of the water tank, and a water tank drain solenoid valve is clamped to the outer wall of the water tank drain pipe by a clamp.

[0009] The above technical solution, namely the installation of a water tank drain pipe, allows for convenient drainage of water from the tank, thus improving the ease of water tank drainage.

[0010] The present invention is further configured such that an external circulation outlet pipe is provided at the bottom of one side of the plate heat exchanger, and a turbine flow meter is provided on the outer wall of the external circulation outlet pipe.

[0011] Through the above technical solutions, the installation of turbine flow meters can facilitate the monitoring of flow in the external circulation outlet pipe, making it easier for workers to grasp the flow data.

[0012] The present invention is further configured such that a proportional valve is provided on the outer wall of the external circulation outlet pipe near the turbine flow meter.

[0013] Through the above technical solutions, the proportional valve can be set to easily and dynamically adjust the water pressure in the external circulation outlet pipe, thus avoiding overload.

[0014] The present invention is further provided that the inner wall of the plate heat exchanger is provided with a heat insulation layer, and the heat insulation layer is made of centrifugal glass wool.

[0015] Through the above technical solutions, the insulation layer can achieve a good insulation effect, reduce the heat exchange between the inside of the plate heat exchanger and the outside, and improve the heat exchange efficiency.

[0016] The present invention is further provided that both the inlet and outlet ends of the plate heat exchanger are provided with connecting flanges, and the connecting flanges are provided with sealing rings inside.

[0017] The above technical solutions, including the use of sealing rings, can achieve a good sealing effect and prevent leakage when connecting pipes.

[0018] The present invention is further configured such that the sealing ring is made of silicone.

[0019] Through the above technical solutions, the silicone sealing ring has good elasticity, which makes it easy to seal the gap at the port of the plate heat exchanger, thus improving the sealing effect of the plate heat exchanger.

[0020] The beneficial effects of this utility model are as follows: During use, water is replenished to the water tank by a booster pump. After the hand valve is opened, the internal circulating water enters the downstream pipeline. The first filter effectively filters the deionized water in the water tank, effectively removing impurities mixed in the circulating water. The outlet pipeline of the plate heat exchanger contains a temperature sensor and an internal circulating turbine flow meter. The temperature sensor can effectively monitor the temperature information of the internal circulating water, while the turbine flow meter can monitor the flow information of the internal circulating water in real time, effectively ensuring the water flow during fuel cell performance testing. After the flow rate of the internal circulating water is regulated by the frequency converter of the circulating water pump, it enters the plate heat exchanger. The plate heat exchanger, connected to the external circulating water pipeline, allows the internal and external circulating water to exchange heat, thereby effectively controlling the temperature of the internal circulating water to meet the requirements of fuel cell performance testing. It can precisely control the pressure of the internal circulating water, accurately adjust the pressure of the circulating water required by the fuel cell, precisely control the flow rate of the internal circulating water, and precisely adjust the flow rate of the deionized water required by the fuel cell. The initial temperature of the circulating water required by the fuel cell can be precisely set by heating the water tank, effectively reducing the risk of excessive temperature during fuel cell testing and effectively cooling it. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of a hydrothermal device for testing high-power fuel cells proposed in this utility model. Figure 2 for Figure 1 Enlarged structural diagram at point A; Figure 3 This is a schematic diagram of a plate heat exchanger structure for a hydrothermal device used in high-power fuel cell testing, as proposed in this utility model.

[0022] In the diagram: 1. Booster water pump; 2. Water tank replenishment solenoid valve; 3. Water tank drain solenoid valve; 4. Water tank; 5. Manual valve; 6. First filter; 7. Circulating water pump; 8. Plate heat exchanger; 9. Temperature sensor; 10. Turbine flow meter; 11. Second filter; 12. External circulation solenoid valve; 13. Turbine flow meter; 14. Proportional valve; 15. Water tank replenishment pipe; 16. Water tank drain pipe; 17. Internal circulation water inlet pipe; 18. Internal circulation water outlet pipe; 19. External circulation inlet pipe; 20. External circulation outlet pipe; 21. Sealing ring. Detailed Implementation

[0023] The technical solution of this patent will be further described in detail below with reference to specific embodiments.

[0024] The embodiments of this patent are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this patent, and should not be construed as limiting this patent.

[0025] Reference Figure 1-3 A hydrothermal device for testing high-power fuel cells includes a booster pump 1, a water tank supply pipe 15 at the input end of the booster pump 1, a water tank 4 at the output end of the booster pump 1 via a water tank supply solenoid valve 2, a circulation pipe at one side of the bottom of the water tank 4, a hand valve 5 on the outer wall of the circulation pipe, a first filter 6 on the outer wall of the circulation pipe near the hand valve 5, a circulation pump 7 at the end of the circulation pipe away from the water tank 4, and a plate heat exchanger 8 at the outlet end of the circulation pump 7 via a water pipe. The outlet pipe of the plate heat exchanger 8 is equipped with a temperature sensor 9 and an internal circulating water turbine flow meter 10 in sequence. The downstream pipe of the circulating water turbine flow meter 10 is equipped with an internal circulating water inlet pipe 17. The end of the water tank 4 away from the booster water pump 1 is equipped with an internal circulating water outlet pipe 18. An external circulation water inlet pipe 19 is provided on one side of the plate heat exchanger 8. The external circulation water inlet pipe 19 allows the hydrogen external circulation water entering the plate heat exchanger 8 to pass through the second filter 11 and the external circulation water solenoid valve 12 before entering the plate heat exchanger 8.

[0026] In this embodiment, a water tank drain pipe 16 is provided on the other side of the bottom of the water tank 4. The outer wall of the water tank drain pipe 16 is connected to the water tank drain solenoid valve 3 by a clamp. The water tank drain pipe 16 can conveniently drain the water in the water tank 4, improving the convenience of draining the water tank 4.

[0027] Furthermore, an external circulation outlet pipe 20 is provided at the bottom of one side of the plate heat exchanger 8. A turbine flow meter 13 is provided on the outer wall of the external circulation outlet pipe 20. The turbine flow meter 13 can be used to easily monitor the flow rate in the external circulation outlet pipe 20, making it convenient for workers to grasp the flow data. A proportional valve 14 is provided on the outer wall of the external circulation outlet pipe 20 near the turbine flow meter 13. The proportional valve 14 can be used to easily and dynamically adjust the water pressure in the external circulation outlet pipe 20 to avoid overload.

[0028] The inner wall of the plate heat exchanger 8 is provided with an insulation layer made of centrifugal glass wool. The insulation layer can achieve a good insulation effect, reduce the heat exchange between the inside of the plate heat exchanger 8 and the outside, and improve the heat exchange efficiency.

[0029] It is worth mentioning that both the inlet and outlet ends of the plate heat exchanger 8 are equipped with connecting flanges, and the inside of the connecting flanges is equipped with sealing rings 21. The sealing rings 21 can achieve a good sealing effect and prevent leakage when connecting pipes. The sealing rings 21 are made of silicone material, which has good elasticity and can easily seal the gaps at the ports of the plate heat exchanger 8, thereby improving the sealing effect of the plate heat exchanger 8.

[0030] Working principle: During use, water is replenished to the water tank 4 by the booster pump 1. After the hand valve 5 is opened, the internal circulating water enters the downstream pipeline. The first filter 6 effectively filters the deionized water in the water tank 4, effectively removing impurities mixed in the circulating water. The outlet pipeline of the plate heat exchanger 8 contains a temperature sensor 9 and an internal circulating turbine flow meter 10. The temperature sensor 9 can effectively monitor the temperature information of the internal circulating water, while the turbine flow meter 10 can monitor the flow information of the internal circulating water in real time, effectively ensuring the water flow during fuel cell performance testing. After the internal circulating water flow is regulated by the frequency converter control of the circulating water pump 7, it enters the plate heat exchanger 8. The plate heat exchanger 8 is connected to the external circulating water pipeline, so that the internal circulating water and the external circulating water exchange heat, thereby effectively controlling the temperature of the internal circulating water and meeting the requirements of fuel cell performance testing.

[0031] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A hydrothermal device for testing high-power fuel cells, characterized in that, The system includes a booster pump (1), with a water tank supply pipe (15) at the input end of the booster pump (1), and a water tank (4) connected to the output end of the booster pump (1) via a water tank supply solenoid valve (2). A circulation pipeline is provided on one side of the bottom of the water tank (4), and a hand valve (5) is provided on the outer wall of the circulation pipeline. A first filter (6) is provided on the outer wall of the circulation pipeline near the hand valve (5). A circulation pump (7) is provided at the end of the circulation pipeline away from the water tank (4), and a plate heat exchanger (8) is connected to the outlet end of the circulation pump (7) via a water pipe. The outlet pipe of the plate heat exchanger (8) is equipped with a temperature sensor (9) and an internal circulating water turbine flow meter (10) in sequence. The downstream pipe of the circulating water turbine flow meter (10) is equipped with an internal circulating water inlet pipe (17). The end of the water tank (4) away from the booster water pump (1) is equipped with an internal circulating water outlet pipe (18). An external circulation water inlet pipe (19) is provided on one side of the plate heat exchanger (8). The external circulation water inlet pipe (19) allows the hydrogen external circulation water entering the plate heat exchanger (8) to pass through the second filter (11) and the external circulation water solenoid valve (12) before entering the plate heat exchanger (8).

2. The hydrothermal device for testing high-power fuel cells according to claim 1, characterized in that, A water tank drain pipe (16) is provided on the other side of the bottom of the water tank (4), and a water tank drain solenoid valve (3) is connected to the outer wall of the water tank drain pipe (16) by a clamp.

3. A hydrothermal device for testing high-power fuel cells according to claim 1, characterized in that, An external circulation outlet pipe (20) is provided at the bottom of one side of the plate heat exchanger (8), and a turbine flow meter (13) is provided on the outer wall of the external circulation outlet pipe (20).

4. A hydrothermal device for testing high-power fuel cells according to claim 3, characterized in that, A proportional valve (14) is provided on the outer wall of the external circulation outlet pipe (20) near the turbine flow meter (13).

5. A hydrothermal device for testing high-power fuel cells according to claim 1, characterized in that, The inner wall of the plate heat exchanger (8) is provided with a heat insulation layer, and the heat insulation layer is made of centrifugal glass wool.

6. A hydrothermal device for testing high-power fuel cells according to claim 5, characterized in that, The plate heat exchanger (8) is equipped with connecting flanges at both the inlet and outlet ends, and a sealing ring (21) is provided inside the connecting flange.

7. A hydrothermal device for testing high-power fuel cells according to claim 6, characterized in that, The sealing ring (21) is made of silicone.

Images