Hydrogen pump offline test running-in rack

Abstract

The utility model relates to the technical field of hydrogen circulating pumps, in particular to a hydrogen pump offline test running-in rack. Comprising a frame body, a plurality of hydrogen circulating pumps are installed on the frame body, air inlets of the hydrogen circulating pumps are connected with air inlet pipes, the air inlet pipes upwards extend to the top of the frame body and are connected with air filter elements, a water tank is arranged at the top of the frame body, and a water passing pipe at the bottom of the water tank is connected with a water supply main pipe; the side portion of an air inlet pipe of each hydrogen circulating pump is connected with a water supply main pipe through a hose, an exhaust port of each hydrogen circulating pump is connected with an exhaust pipe, the exhaust pipes are connected with an exhaust main pipe installed on the frame body, and the exhaust main pipe is connected with a waste water barrel installed on one side of the frame body. It is ensured that the hydrogen circulating pump meets the design requirement before leaving a factory, internal parts of the hydrogen circulating pump are fully run-in, the performance is optimized, the stability and reliability are improved, the service life is prolonged, potential problems are found, the failure rate is reduced, and a certain protection effect on a later fuel cell system is achieved.

Description

Technical fields:

[0001] This utility model relates to the field of hydrogen circulation pump technology, and in particular to a hydrogen pump offline testing and break-in bench. Background technology:

[0002] Currently, hydrogen circulation pumps are generally shipped directly from the factory after assembly and quality inspection, and put into use in fuel cell systems. However, in actual use, during the initial working stage, due to the lack of break-in of internal components, the hydrogen circulation pump will generate a small amount of debris. This debris will enter the fuel cell system with the gas, causing some damage to the fuel cell system. There is currently no good solution to the above problem.

[0003] In summary, the break-in issue of internal components of hydrogen circulation pumps before delivery has become a technical problem that urgently needs to be solved in the industry. Utility model content:

[0004] To overcome the shortcomings of the prior art, this utility model provides a hydrogen pump offline testing and break-in bench, which solves the problem that the internal parts of the previous hydrogen circulation pumps were not broken in before leaving the factory, resulting in the generation of debris later.

[0005] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows:

[0006] A hydrogen pump offline testing and break-in bench includes a frame, on which several hydrogen circulation pumps are mounted. The air inlet of each hydrogen circulation pump is connected to an air inlet pipe, which extends upward to the top of the frame and connects to an air filter. A water tank is located at the top of the frame, and a water supply pipe at the bottom of the water tank is connected to a main water supply pipe. A water valve is installed on the water supply pipe. The side of the air inlet pipe of each hydrogen circulation pump is connected to the main water supply pipe via a flexible hose. The exhaust port of each hydrogen circulation pump is connected to an exhaust pipe, which is connected to a main exhaust pipe mounted on the frame. The main exhaust pipe is connected to a wastewater tank mounted on one side of the frame.

[0007] The frame is equipped with a controller, which is connected to a hydrogen circulation pump.

[0008] A heat sink is installed on the frame below the controller.

[0009] The radiator includes a water-cooled radiator or an air-cooled radiator.

[0010] The wastewater tank is equipped with an air vent at the top and a drain valve at the bottom.

[0011] The present invention adopts the above solution and has the following advantages:

[0012] The hydrogen circulation pump's inlet pipe is connected to the main water supply pipe via a flexible hose. The main water supply pipe is then connected to the water tank. Before the hydrogen circulation pump leaves the factory, it is started and operated for a certain period of time. Then, the water valve on the water inlet pipe is opened. Under the negative pressure of the hydrogen circulation pump, water from the tank flows sequentially through the water inlet pipe, the main water supply pipe, and the inlet pipe into the hydrogen circulation pump to flush it and remove debris generated during the break-in process. The water valve is then closed, and the hydrogen circulation pump continues to operate for a certain period of time to dry itself using the heat it generates. Through this break-in test, it is ensured that the hydrogen circulation pump meets the design requirements before leaving the factory. This allows the internal components of the hydrogen circulation pump to fully break in, optimizes performance, improves stability, reliability, and lifespan, identifies potential problems, reduces the failure rate, and also provides some protection for the subsequent fuel cell system. Attached image description:

[0013] Figure 1 This is a schematic diagram of the main structure of this utility model.

[0014] Figure 2 This is a schematic diagram of the right-side structure of this utility model.

[0015] In the diagram, 1. Frame, 2. Hydrogen circulation pump, 3. Air inlet pipe, 4. Air filter, 5. Water tank, 6. Water pipe, 7. Main water supply pipe, 8. Water valve, 9. Hose, 10. Exhaust pipe, 11. Main exhaust pipe, 12. Wastewater tank, 13. Controller, 14. Radiator, 15. Exhaust pipe, 16. Drain valve. Detailed implementation method:

[0016] To clearly illustrate the technical features of this solution, the present invention will be described in detail below through specific embodiments and in conjunction with the accompanying drawings.

[0017] like Figure 1-2 As shown, a hydrogen pump offline test break-in bench 1 includes a frame 1, on which several hydrogen circulation pumps 2 are installed. The air inlet of the hydrogen circulation pump 2 is connected to the air inlet pipe 3. The air inlet pipe 3 extends upward to the top of the frame 1 and is connected to the air filter element 4. A water tank 5 is provided at the top of the frame 1. A water pipe 6 at the bottom of the water tank 5 is connected to a main water supply pipe 7. A water valve 8 is provided on the water pipe 6. The side of the air inlet pipe 3 of each hydrogen circulation pump 2 is connected to the main water supply pipe 7 through a hose 9. The exhaust port of the hydrogen circulation pump 2 is connected to the exhaust pipe 10. The exhaust pipe 10 is connected to the exhaust main pipe 11 installed on the frame 1. The exhaust main pipe 11 is connected to a wastewater tank 12 installed on one side of the frame 1.

[0018] The frame 1 is equipped with a controller 13, which is connected to the hydrogen circulation pump 2.

[0019] A heat sink 14 is installed on the frame 1 below the controller 13 to dissipate heat from the controller 13.

[0020] The radiator 14 includes a water-cooled radiator or an air-cooled radiator.

[0021] The wastewater tank 12 is equipped with a vent pipe 15 at the top, through which gas can be discharged. A drain valve 16 is provided at the bottom, which can be opened to discharge water when the wastewater tank 12 is full.

[0022] Working principle:

[0023] Before the hydrogen circulation pump 2 leaves the factory, it is first installed on the frame 1 of this utility model. Multiple hydrogen circulation pumps 2 can be installed on the frame 1 at the same time. The air inlet of the hydrogen circulation pump 2 is connected to the air inlet pipe 3, and the exhaust port of the hydrogen circulation pump 2 is connected to the exhaust pipe 10. After installation, the hydrogen circulation pump 2 is started, and the speed of the hydrogen circulation pump 2 is set to n = 8000 rpm, the pressure difference is 25-30 kPa, and the continuous working time is 9 hours to allow the internal parts of the hydrogen circulation pump 2 to fully break in. Then, the water valve 8 on the water pipe 6 is opened, and the water in the water tank is circulated sequentially under the negative pressure of the hydrogen circulation pump 2. The water flows into the hydrogen circulation pump 2 through the water pipe 6, the main water supply pipe 7, and the air inlet pipe 3 to flush the hydrogen circulation pump 2. The water flow rate is 10-20 ml / min, and the time is 30 minutes. This removes the debris generated during the break-in process of the hydrogen circulation pump 2. Then, the water valve 8 is closed. Finally, the hydrogen circulation pump 2 continues to operate, with the speed set at 8000 rpm, the pressure difference at 25-30 kPa, and the time set at 30 minutes. The hydrogen circulation pump 2 dries itself using the heat it generates. Through a 10-hour break-in test, it can be ensured that the hydrogen circulation pump 2 meets the design requirements before leaving the factory and achieves the purpose of eliminating debris.

[0024] The above specific embodiments should not be construed as limiting the scope of protection of this utility model. For those skilled in the art, any alternative improvements or modifications made to the embodiments of this utility model shall fall within the scope of protection of this utility model.

[0025] Any aspects of this utility model not described in detail are known to those skilled in the art.

Claims

1. A hydrogen pump offline testing and break-in bench, characterized in that: The system includes a frame on which several hydrogen circulation pumps are installed. The air inlet of each hydrogen circulation pump is connected to an air inlet pipe, which extends upward to the top of the frame and connects to an air filter. A water tank is located at the top of the frame, and a water supply pipe at the bottom of the tank is connected to a main water supply pipe. A water valve is installed on the water supply pipe. The side of the air inlet pipe of each hydrogen circulation pump is connected to the main water supply pipe via a flexible hose. The exhaust port of each hydrogen circulation pump is connected to an exhaust pipe, which is connected to a main exhaust pipe installed on the frame. The main exhaust pipe is connected to a wastewater tank installed on one side of the frame.

2. The hydrogen pump offline testing and break-in bench according to claim 1, characterized in that: The frame is equipped with a controller, which is connected to a hydrogen circulation pump.

3. The hydrogen pump offline testing and break-in bench according to claim 2, characterized in that: A heat sink is installed on the frame below the controller.

4. The hydrogen pump offline test break-in bench according to claim 3, characterized in that: The radiator includes a water-cooled radiator or an air-cooled radiator.

5. The hydrogen pump offline testing and break-in bench according to claim 1, characterized in that: The wastewater tank is equipped with an air vent at the top and a drain valve at the bottom.

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