A fuel cell engine three-in-one vibration test system and method

Abstract

The present invention discloses a three-in-one vibration test system and method for a fuel cell engine, including a vibration system, a movable environmental chamber, an environmental chamber mobile control system, a hydrogen refrigeration device and an air refrigeration device, the environmental chamber mobile control system includes a horizontal guide rail, a horizontal mobile drive system, a mobile platform, a vertical guide rail and a vertical lifting drive system, and the vibration system includes a horizontal vibration table and a vertical vibration table; the movable environmental chamber is provided with a hydrogen connection port and an air connection port correspondingly connected to the fuel cell engine. The present invention can realize vibration testing of the fuel cell engine in working states such as no-load, loaded, loaded, and unloaded, and can simulate different working conditions such as hydrogen and air, and can realize vibration testing under harsh conditions such as the working state of the comprehensive engine and the working environment, and can monitor hydrogen leakage and timely cut off the hydrogen gas source and forced emptying to ensure test safety.

Description

Technical Field

[0001] The present invention relates to the field of fuel cell engine testing, and in particular to a fuel cell engine three-integrated vibration testing system and method. Background Art

[0002] Fuel cell engines need to undergo vibration testing to test the crack damage, deformation, fatigue damage, pipeline sealing and other performance of fuel cell engines under vibration conditions; the traditional way of testing fuel cell engine vibration testing generally only vibrates the fuel cell engine in a shutdown state to monitor its performance, and it is unable to perform environmental simulation testing. When the fuel cell engine is in a shutdown state, it does not have hydrogen gas, is not started, and does not achieve environmental simulation, which severely limits the environmental simulation testing of fuel cell engines. With the development of hydrogen fuel cell technology and industry, the demand for engine testing and verification is also increasing. It is the current trend to test hydrogen fuel cell engines by simulating the actual use environment and more stringent test conditions. Among them, the need to perform vibration testing on the engine during operation to verify the vibration reliability of the engine during operation puts higher requirements on the test system, especially in terms of gas supply conditions, engine working conditions, and test protection measures. Summary of the invention

[0003] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a fuel cell engine three-in-one vibration test system and method. The movable environmental chamber can create an environmental chamber for the fuel cell engine and can realize the working environment simulation. It can realize the vibration test of the fuel cell engine in the working states such as no-load, loaded, loaded and unloaded. At the same time, it can simulate the working environment such as hydrogen and air with different temperature and humidity environments, and can realize the vibration test under the harsh conditions such as the comprehensive engine working state and working environment. It can monitor hydrogen leakage and cut off the hydrogen gas source and force it to be emptied in time to ensure the safety of the test.

[0004] The purpose of the present invention is achieved through the following technical solutions:

[0005] A fuel cell engine three-in-one vibration test system comprises a vibration system, a movable environmental box, an environmental box movement control system, a hydrogen refrigeration device and an air refrigeration device, wherein the environmental box movement control system comprises a horizontal guide rail, a horizontal movement drive system, a mobile platform, a vertical guide rail and a vertical lifting drive system, wherein the vertical lifting drive system and the vertical guide rail are fixed on the mobile platform in cooperation, the movable environmental box is installed on the vertical guide rail in a lifting cooperation manner, the vertical lifting drive system is used to drive the movable environmental box to move in a lifting manner, the mobile platform is installed on the horizontal guide rail in a sliding cooperation manner, and the horizontal movement drive system is used to drive the mobile platform to move horizontally; the vibration system is correspondingly arranged near the horizontal guide rail, and the vibration system comprises a horizontal vibration table and a vertical vibration table; the bottom of the movable environmental box is open, and the inner cavity of the movable environmental box accommodates the fuel cell engine in correspondence; the movable environmental box is provided with a hydrogen connection port and an air connection port correspondingly connected to the fuel cell engine, the hydrogen refrigeration device is sealedly connected to the hydrogen connection port through a flexible pipeline A, and the air refrigeration device is sealedly connected to the air connection port through a flexible pipeline B.

[0006] In order to better realize the three-in-one vibration test system of the fuel cell engine of the present invention, the vibration system includes a horizontal vibration control module and a vertical vibration control module. The horizontal vibration table has a horizontal vibration power device, and the vertical vibration table has a vertical vibration power device. The horizontal vibration control module is connected to the horizontal vibration power device and controls the horizontal vibration power device to apply horizontal vibration to the fuel cell engine. The vertical vibration control module is connected to the vertical vibration power device and controls the vertical vibration power device to apply vertical vibration to the fuel cell engine.

[0007] Preferably, the environmental chamber movement control system includes a horizontal movement control module and a vertical lifting control module, the horizontal movement control module is connected to the horizontal movement drive system, and the vertical lifting control module is connected to the vertical lifting drive system.

[0008] Preferably, the movable environmental box is provided with a hydrogen monitoring sensor for monitoring hydrogen in the box cavity.

[0009] Preferably, the movable environmental box is provided with a temperature and humidity sensor assembly for monitoring the temperature and humidity of the inner cavity of the box.

[0010] Preferably, the movable environmental box is further provided with a nitrogen or inert gas supply port, and the nitrogen or inert gas supply port is sealed and connected to a nitrogen or inert gas source.

[0011] A fuel cell engine three-integrated vibration test method, the method is as follows:

[0012] A. Assemble the movable environmental box on the vertical rail of the environmental box mobile control system, start the hydrogen monitoring sensor and the temperature and humidity sensor assembly; install the fuel cell engine on the horizontal vibration table, the horizontal movement control module of the environmental box mobile control system controls the horizontal movement drive system to drive the mobile platform and the movable environmental box to move horizontally, the vertical lifting control module of the environmental box mobile control system controls the vertical lifting drive system to drive the movable environmental box to lift vertically, move the movable environmental box to the horizontal vibration table of the vibration system and make the fuel cell engine have a closed environmental space inside the movable environmental box, introduce hydrogen into the fuel cell engine through the hydrogen connecting port, introduce air into the fuel cell engine through the air connecting port, and the horizontal vibration control module controls the horizontal vibration power device to apply a horizontal vibration test to the fuel cell engine; then install the fuel cell engine on the vertical vibration table, the environmental box mobile control system moves the movable environmental box to the vertical vibration table of the vibration system and makes the fuel cell engine have a closed environmental space inside the movable environmental box, introduce hydrogen into the fuel cell engine through the hydrogen connecting port, introduce air into the fuel cell engine through the air connecting port, and the vertical vibration control module controls the vertical vibration power device to apply a vertical vibration test to the fuel cell engine;

[0013] B. Install the fuel cell engine on a horizontal vibration table, start the hydrogen monitoring sensor and the temperature and humidity sensor assembly, connect the hydrogen source through the hydrogen refrigeration device and introduce hydrogen into the fuel cell engine through the hydrogen connection port, introduce air into the fuel cell engine through the air refrigeration device through the air connection port, start the fuel cell engine and set the working state, move the movable environmental box to the horizontal vibration table of the vibration system through the environmental box movement control system and make the fuel cell engine have a closed environmental space inside the movable environmental box, and the horizontal vibration control module controls the horizontal vibration power device to apply a horizontal vibration test to the fuel cell engine; then install the fuel cell engine on a vertical vibration table, and the environmental box movement control system moves the movable environmental box to the vertical vibration table of the vibration system and makes the fuel cell engine have a closed environmental space inside the movable environmental box, and the vertical vibration control module controls the vertical vibration power device to apply a vertical vibration test to the fuel cell engine;

[0014] During the horizontal vibration test and / or vertical vibration test of the fuel cell engine, the hydrogen leakage inside the movable environmental box is monitored by a hydrogen monitoring sensor; a forced ventilation system is provided on the top of the movable environmental box, and the forced ventilation system includes an openable skylight and an exhaust fan. When the hydrogen monitoring sensor detects that the oxygen concentration inside the movable environmental box reaches a first set warning threshold, the hydrogen monitoring sensor triggers an audible and visual alarm to give a warning prompt; when the hydrogen monitoring sensor detects that the oxygen concentration inside the movable environmental box reaches a second set warning threshold, and the second set warning threshold is greater than the first set warning threshold, the hydrogen monitoring sensor transmits a signal to the forced ventilation system, controls the electromagnetic valve on the hydrogen connection port to close and cut off the hydrogen gas supply, and at the same time, the forced ventilation system opens the openable skylight and starts the exhaust fan to forcibly exhaust the gas inside the movable environmental box;

[0015] During the horizontal vibration test and / or vertical vibration test of the fuel cell engine, the temperature and humidity inside the movable environmental chamber are monitored through the temperature and humidity sensor assembly;

[0016] C. Adjust the working state of the fuel cell engine, adjust the temperature of the supplied hydrogen through the hydrogen refrigeration device, adjust the temperature of the supplied air through the air refrigeration device, and perform vibration tests in different working conditions according to step B.

[0017] A further preferred technical solution of the three-integrated vibration test method for a fuel cell engine of the present invention is: the present invention further comprises step D;

[0018] D. During the vibration test in step B or / and step C, nitrogen or inert gas is filled into the movable environmental box through the nitrogen or inert gas supply port for safety protection.

[0019] Preferably, the vibration system is provided with a flexible sealing connection part A around the horizontal vibration table, and the bottom opening of the movable environmental chamber is sealed by the flexible sealing connection part A; the vibration system is provided with a flexible sealing connection part B around the vertical vibration table, and the bottom opening of the movable environmental chamber is sealed by the flexible sealing connection part B.

[0020] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0021] (1) The movable environmental chamber of the present invention can create an environmental chamber for the fuel cell engine and can realize the simulation of the working environment. It can realize the vibration test of the fuel cell engine in the working states such as no-load, loaded, loaded, and unloaded. At the same time, it can simulate the working environment such as hydrogen and air with different temperature and humidity environments. It can realize the vibration test under the harsh conditions such as the comprehensive engine working state and working environment. It can monitor hydrogen leakage and cut off the hydrogen gas source and force it to be emptied in time to ensure the safety of the test.

[0022] (2) The present invention can not only realize environmental simulation of engine running air supply conditions, temperature conditions, etc., but also can connect to the host computer to adjust the working state of the engine so as to carry out vibration tests in different working states and different working environments. It also has hydrogen monitoring and safety protection functions, and has safe and reliable protection measures for hydrogen leakage in the process of engine vibration testing. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A schematic diagram of the structure of a movable environmental chamber for loading a fuel cell engine of the present invention;

[0024] Figure 2 It is a principle block diagram of the movement control and vibration control of the fuel cell engine of the present invention;

[0025] Figure 3 It is a structural diagram of the moving and vibrating combination of the fuel cell engine of the present invention from a top view;

[0026] Figure 4 It is a structural diagram of the fuel cell engine moving and vibrating combination from the side view in the embodiment.

[0027] The names corresponding to the reference numerals in the accompanying drawings are:

[0028] 1- movable environmental chamber, 2- environmental chamber movement control system, 3- mobile platform, 4- horizontal guide rail, 5- vertical guide rail, 6- horizontal movement control module, 7- vertical lifting control module, 8- vibration system, 9- horizontal vibration table, 91- horizontal vibration control module, 10- vertical vibration table, 101- vertical vibration control module, 11- temperature and humidity sensor assembly, 12- hydrogen monitoring sensor, 13- hydrogen refrigeration device, 14- air refrigeration device. DETAILED DESCRIPTION

[0029] The present invention is further described in detail below in conjunction with embodiments:

[0030] Example

[0031] like Figure 1 to Figure 4As shown, a fuel cell engine three-in-one vibration test system includes a vibration system 8, a fuel cell engine, a movable environmental chamber 1, an environmental chamber movement control system 2, a hydrogen refrigeration device 13 and an air refrigeration device 14, the environmental chamber movement control system 2 includes a horizontal guide rail 4, a horizontal movement drive system, a mobile platform 3, a vertical guide rail 5 and a vertical lifting drive system, the vertical lifting drive system and the vertical guide rail 5 are fixed on the mobile platform 3, the movable environmental chamber 1 is lifted and installed on the vertical guide rail 5 (the number of vertical guide rails 5 is at least two, and the movable environmental chamber 1 is provided with a sliding fitting part that slides with the vertical guide rail 5, and the vertical guide rail 5 plays a lifting and guiding role for the movable environmental chamber 1), the vertical lifting drive system is used to drive the movable environmental chamber 1 to move up and down, the vertical lifting drive system can be a vertical lifting motor or a threaded screw lifting drive system, and the vertical lifting drive system drives the movable environmental chamber 1 to move up and down under the guidance of the vertical guide rail 5. The mobile platform 3 is slidably mounted on the horizontal guide rail 4 (there are at least two horizontal guide rails 4, and the mobile platform 3 is provided with a sliding fitting part that slides in cooperation with the horizontal guide rail 4, and the horizontal guide rail 4 serves as a guide for the horizontal movement of the mobile platform 3 together with the movable environmental box 1). The horizontal movement drive system is used to drive the mobile platform 3 to move horizontally. The horizontal movement drive system can be a linear motor or a threaded screw horizontal drive system. The horizontal movement drive system drives the mobile platform 3 to move horizontally together with the movable environmental box 1. The vibration system 8 is correspondingly arranged near the horizontal guide rail 4, so that the horizontal movement drive system can move the movable environmental box 1 to the position of the vibration system 8. The vibration system 8 includes a horizontal vibration table 9 and a vertical vibration table 10. In this embodiment, an isolation plate can be provided between the horizontal vibration table 9 and the vertical vibration table 10, which can play an insulating and flame retardant role. The vibration system 8 is provided with a flexible sealing connection part A around the horizontal vibration table 9, and the bottom opening of the movable environmental box 1 is sealed by the flexible sealing connection part A. When the movable environmental box 1 is moved to the horizontal vibration table 9 and closed on the outside of the fuel cell engine, the bottom of the movable environmental box 1 can be sealed by the flexible sealing connection part A. In this way, when the fuel cell engine vibrates horizontally, the movable environmental box 1 can create a closed working environment for the fuel cell engine, which is convenient for horizontal vibration tests of various working environments and working states. The vibration system 8 is provided with a flexible sealing connection part B around the vertical vibration table 10, and the bottom opening of the movable environmental box 1 is sealed by the flexible sealing connection part B. When the movable environmental box 1 is moved to the vertical vibration table 10 and closed on the outside of the fuel cell engine (the movable environmental box 1 is closed or opened by the vertical lifting drive system), the bottom of the movable environmental box 1 can be sealed by the flexible sealing connection part B. In this way, when the fuel cell engine vibrates vertically, the movable environmental box 1 can create a closed working environment for the fuel cell engine, which is convenient for vertical vibration tests of various working environments and working states.

[0032] The bottom of the movable environmental box 1 is open (that is, the movable environmental box 1 is a five-sided box structure with an opening at the bottom), the inner cavity of the movable environmental box 1 accommodates the fuel cell engine (in actual testing, the movable environmental box 1 accommodates the fuel cell engine and creates an environmental space for the fuel cell engine testing process, which is convenient for environmental testing of the fuel cell engine), the movable environmental box 1 is provided with a hydrogen connecting port and an air connecting port correspondingly connected to the fuel cell engine (the hydrogen connecting port and the air connecting port are arranged on the movable environmental box 1, during the testing operation, the hydrogen inlet of the fuel cell engine is correspondingly connected to the hydrogen connecting port, and the air inlet of the fuel cell engine is correspondingly connected to the air connecting port. In order to facilitate the switching of the hydrogen supply, an electromagnetic valve is provided on the hydrogen connecting port, and an electromagnetic valve is also provided on the air connecting port), the hydrogen refrigeration device 13 is sealedly connected to the hydrogen connecting port through a flexible pipeline A (the hydrogen refrigeration device 13 controls the hydrogen temperature), and the air refrigeration device 14 is sealedly connected to the air connecting port through a flexible pipeline B (the air refrigeration device 14 controls the air temperature).

[0033] See also Figure 2 The vibration system 8 includes a horizontal vibration control module 91 and a vertical vibration control module 101. The horizontal vibration control module 91 controls and executes horizontal vibration, and the vertical vibration control module 101 controls and executes vertical vibration. The horizontal vibration table 9 has a horizontal vibration power device, and the vertical vibration table 10 has a vertical vibration power device. The horizontal vibration control module 91 is connected to the horizontal vibration power device and controls the horizontal vibration power device to apply horizontal vibration to the fuel cell engine. The vertical vibration control module 101 is connected to the vertical vibration power device and controls the vertical vibration power device to apply vertical vibration to the fuel cell engine.

[0034] See also Figure 2 The environmental chamber movement control system 2 includes a horizontal movement control module 6 and a vertical lifting control module 7. The horizontal movement control module 6 is connected to the horizontal movement drive system, and the vertical lifting control module 7 is connected to the vertical lifting drive system.

[0035] See also Figure 1The movable environmental box 1 is provided with a hydrogen monitoring sensor 12 for monitoring hydrogen in the box cavity. The hydrogen monitoring sensor 12 monitors whether there is hydrogen and the concentration of hydrogen in the movable environmental box 1, so as to monitor the hydrogen leakage of the fuel cell engine. The movable environmental box 1 is provided with a temperature and humidity sensor assembly 11 for monitoring the temperature and humidity of the box cavity. The temperature and humidity sensor assembly 11 may include a temperature detector and a humidity detector. The temperature and humidity sensor assembly 11 monitors the temperature and humidity conditions inside the movable environmental box 1 in real time, so as to monitor the temperature and humidity of the working environment around the fuel cell engine. Preferably, the movable environmental box 1 of the present invention is also provided with a nitrogen or inert gas supply port, and the nitrogen or inert gas supply port is sealed and connected to a nitrogen or inert gas source. The nitrogen or inert gas source can pass nitrogen or inert gas into the movable environmental box 1 through the nitrogen or inert gas supply port, so as to achieve a protective effect during the fuel cell engine test process.

[0036] A fuel cell engine three-integrated vibration test method, the method is as follows:

[0037] A. Assemble the movable environmental box 1 on the vertical guide rail 5 of the environmental box movement control system 2, and start the hydrogen monitoring sensor 12 and the temperature and humidity sensor assembly 11. Install the fuel cell engine on the horizontal vibration table 9, the horizontal movement control module 6 of the environmental box movement control system 2 controls the horizontal movement drive system to drive the mobile platform 3 and the movable environmental box 1 to move horizontally, and the vertical lifting control module 7 of the environmental box movement control system 2 controls the vertical lifting drive system to drive the movable environmental box 1 to lift vertically, move the movable environmental box 1 to the horizontal vibration table 9 of the vibration system 8 and make the fuel cell engine have a closed environmental space inside the movable environmental box 1 (the fuel cell engine is contained in the movable environmental box 1, and the bottom opening of the movable environmental box 1 is sealed by the flexible connecting component A), hydrogen is introduced into the fuel cell engine through the hydrogen connection port, and air is introduced into the fuel cell engine through the air connection port, and the horizontal vibration control module 91 controls the horizontal vibration power device to apply horizontal vibration test to the fuel cell engine. Then the fuel cell engine is installed on the vertical vibration table 10, the environmental box movement control system 2 moves the movable environmental box 1 to the vertical vibration table 10 of the vibration system 8 and makes the fuel cell engine have a closed environmental space inside the movable environmental box 1 (the fuel cell engine is contained in the movable environmental box 1, and the bottom opening of the movable environmental box 1 is sealed by the flexible connecting component B), hydrogen is introduced into the fuel cell engine through the hydrogen connection port, and air is introduced into the fuel cell engine through the air connection port, and the vertical vibration control module 101 controls the vertical vibration power device to apply a vertical vibration test to the fuel cell engine. In step A, hydrogen may not be introduced into the fuel cell engine, and the horizontal and vertical vibration tests are performed when the fuel cell engine is in a shutdown state or in a working state without introducing hydrogen.

[0038] B. Install the fuel cell engine on the horizontal vibration table 9, start the hydrogen monitoring sensor 12 and the temperature and humidity sensor assembly 11, connect the hydrogen source through the hydrogen refrigeration device 13 and introduce hydrogen into the fuel cell engine through the hydrogen connecting port, and introduce air into the fuel cell engine through the air connecting port by the air refrigeration device 14, start the fuel cell engine and set the working state (in actual testing, the fuel cell engine is connected to the host computer, and the working state of the fuel cell engine is set by the host computer, such as idle, no-load, loading or unloading settings), move the movable environmental box 1 to the horizontal vibration table 9 of the vibration system 8 through the environmental box movement control system 2, and make the fuel cell engine have a closed environmental space inside the movable environmental box 1 (the fuel cell engine is contained in the movable environmental box 1, and the bottom opening of the movable environmental box 1 is sealed by the flexible connecting component A, so that the movable environmental box 1 creates the environmental space required for testing the fuel cell engine), and the horizontal vibration control module 91 controls the horizontal vibration power device to apply horizontal vibration test to the fuel cell engine. Then, the fuel cell engine is installed on the vertical vibration table 10, and the environmental chamber movement control system 2 moves the movable environmental chamber 1 to the vertical vibration table 10 of the vibration system 8 so that the fuel cell engine has a closed environmental space inside the movable environmental chamber 1 (the fuel cell engine is contained in the movable environmental chamber 1, and the bottom opening of the movable environmental chamber 1 is sealed by the flexible connecting component B, so that the movable environmental chamber 1 creates the environmental space required for testing the fuel cell engine), and the vertical vibration control module 101 controls the vertical vibration power device to apply a vertical vibration test to the fuel cell engine.

[0039] During the horizontal vibration test or / and vertical vibration test of the fuel cell engine, the hydrogen leakage inside the movable environmental box 1 is monitored by the hydrogen monitoring sensor 12. A forced ventilation system is provided on the top of the movable environmental box 1, and the forced ventilation system includes an openable skylight and an exhaust fan. When the hydrogen monitoring sensor 12 detects that the oxygen concentration inside the movable environmental box 1 reaches the first set warning threshold, the hydrogen monitoring sensor 12 triggers an audible and visual alarm to give a warning prompt. When the hydrogen monitoring sensor 12 detects that the oxygen concentration inside the movable environmental box 1 reaches the second set warning threshold, the second set warning threshold is greater than the first set warning threshold, and the hydrogen monitoring sensor 12 transmits a signal to the forced ventilation system to control the electromagnetic valve on the hydrogen connection port to close and cut off the hydrogen gas supply. At the same time, the forced ventilation system opens the openable skylight and starts the exhaust fan to forcibly exhaust the gas inside the movable environmental box 1.

[0040] During the horizontal vibration test or / and vertical vibration test of the fuel cell engine, the temperature and humidity inside the movable environmental box 1 are monitored by the temperature and humidity sensor assembly 11. The movable environmental box 1 of the present invention provides an environmental box for the fuel cell engine, which can fully simulate the working environment of the fuel cell engine, and can also monitor hydrogen in the movable environmental box 1 to achieve hydrogen leakage monitoring of the fuel cell engine.

[0041] C. Adjust the working state of the fuel cell engine, adjust the temperature of the supplied hydrogen through the hydrogen refrigeration device 13, adjust the temperature of the supplied air through the air refrigeration device 14, and perform vibration tests under different working conditions (including different working states of the fuel cell engine, different hydrogen temperatures, different air temperatures, etc.) according to step B. The present invention can realize precooling of hydrogen and air, and perform vibration tests of the fuel cell engine under working conditions with different hydrogen temperatures and different air temperatures.

[0042] According to a preferred embodiment of the present invention, the present invention further comprises step D.

[0043] D. During the vibration test in step B or / and step C, nitrogen or inert gas may be filled into the movable environmental box 1 through the nitrogen or inert gas supply port for safety protection.

[0044] The present invention can perform vibration tests on hydrogen fuel cell engines, and can also simulate vibration tests of hydrogen fuel cell engines in working conditions under specific temperature and humidity environments. The environmental system (including hydrogen refrigeration device 13, air refrigeration device 14, hydrogen monitoring sensor 12, temperature and humidity sensor assembly 11) of the present invention that simulates temperature and humidity environments has hydrogen leakage alarm and protection functions, can detect hydrogen leakage in time during the test, issue an alarm, and notify the tester, and has active protection functions such as cutting off the hydrogen source and forcibly opening ventilation and pressure relief. The environmental box (i.e., the movable environmental box 1) of the present invention has a detachable air connection port, which is connected to the air inlet of the hydrogen fuel cell engine, and the air connection port is connected to the air refrigeration device 14, and the air refrigeration device 14 can control the temperature of the air to simulate the actual air temperature. The movable environmental box 1 of the present invention also has a hydrogen connection port (i.e., a hydrogen supply pipeline interface) connected to the hydrogen fuel cell engine, and the hydrogen connection port is connected to the external hydrogen refrigeration device 13, and the hydrogen refrigeration device 13 can control the supply temperature of hydrogen to simulate the actual temperature used. The movable environmental box 1 of the present invention has a movable function, which is used to cooperate with the engine vibration test application. At the same time, the pipeline connecting the environmental box and the precooling system (hydrogen refrigeration device 13 and air refrigeration device 14) is a flexible and detachable pipeline, which is convenient for the movement of the environmental box and the use during testing. The environmental box of the present invention has other gas supply interfaces (i.e., nitrogen or inert gas supply ports), and nitrogen or inert gas can be filled into the environmental box, which can meet certain test scenarios that require gas protection. If it is during the operation test of the engine, filling nitrogen or inert gas in the environmental box can further increase safety protection. The present invention can realize the vibration test of the engine under load; can simulate the vibration test of the engine under the use environment; can perform vibration test under more severe conditions; in the case of hydrogen leakage, it can timely discover and actively cut off the hydrogen gas source, and force ventilation to ensure safety; the present invention can add nitrogen or inert gas in the environmental box to achieve the engine in a protective environment to achieve load vibration, and the safety is further improved.

[0045] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A fuel cell engine three-in-one vibration test system, comprising a vibration system (8), characterized in that: It also includes a movable environmental chamber (1), an environmental chamber movement control system (2), a hydrogen refrigeration device (13) and an air refrigeration device (14). The environmental chamber movement control system (2) includes a horizontal guide rail (4), a horizontal movement drive system, a mobile platform (3), a vertical guide rail (5) and a vertical lifting drive system. The vertical lifting drive system and the vertical guide rail (5) are fixed on the mobile platform (3). The movable environmental chamber (1) is installed on the vertical guide rail (5) for lifting. The vertical lifting drive system is used to drive the movable environmental chamber (1) to move upward and downward. The mobile platform (3) is installed on the horizontal guide rail (4) for sliding. The horizontal movement drive system is used to drive the mobile platform (3) to move horizontally; the vibration system (8) is correspondingly arranged near the horizontal guide rail (4), and the vibration system (8) includes a horizontal vibration table (9) and a vertical vibration table (10); the bottom of the movable environmental box (1) is open, and the inner cavity of the movable environmental box (1) corresponds to accommodating the fuel cell engine; the movable environmental box (1) is provided with a hydrogen connection port and an air connection port corresponding to the fuel cell engine; the hydrogen refrigeration device (13) is in sealed communication with the hydrogen connection port via a flexible pipeline A, and the air refrigeration device (14) is in sealed communication with the air connection port via a flexible pipeline B.

2. A fuel cell engine three-in-one vibration test system according to claim 1, characterized in that: The vibration system (8) comprises a horizontal vibration control module (91) and a vertical vibration control module (101); the horizontal vibration table (9) has a horizontal vibration power device; the vertical vibration table (10) has a vertical vibration power device; the horizontal vibration control module (91) is connected to the horizontal vibration power device and controls the horizontal vibration power device to apply horizontal vibration to the fuel cell engine; and the vertical vibration control module (101) is connected to the vertical vibration power device and controls the vertical vibration power device to apply vertical vibration to the fuel cell engine.

3. A fuel cell engine three-in-one vibration test system according to claim 1, characterized in that: The environmental chamber movement control system (2) comprises a horizontal movement control module (6) and a vertical lifting control module (7); the horizontal movement control module (6) is connected to the horizontal movement drive system, and the vertical lifting control module (7) is connected to the vertical lifting drive system.

4. A fuel cell engine three-in-one vibration test system according to claim 2, characterized in that: The movable environmental box (1) is provided with a hydrogen monitoring sensor (12) for monitoring hydrogen in the box cavity.

5. A fuel cell engine three-in-one vibration test system according to claim 4, characterized in that: The movable environmental box (1) is provided with a temperature and humidity sensor assembly (11) for monitoring the temperature and humidity of the box cavity.

6. A fuel cell engine three-in-one vibration test system according to claim 1, 4 or 5, characterized in that: The movable environmental box (1) is also provided with a nitrogen or inert gas supply port, which is sealed and connected to a nitrogen or inert gas source.

7. A vibration test method based on the fuel cell engine three-in-one vibration test system according to claim 5, characterized in that: The method is as follows: A. The movable environmental chamber (1) is assembled on the vertical guide rail (5) of the environmental chamber movement control system (2), and the hydrogen monitoring sensor (12) and the temperature and humidity sensor assembly (11) are started; the fuel cell engine is installed on the horizontal vibration table (9), the horizontal movement control module (6) of the environmental chamber movement control system (2) controls the horizontal movement drive system to drive the mobile platform (3) and the movable environmental chamber (1) to move horizontally, the vertical lifting control module (7) of the environmental chamber movement control system (2) controls the vertical lifting drive system to drive the movable environmental chamber (1) to lift vertically, the movable environmental chamber (1) is moved to the horizontal vibration table (9) of the vibration system (8), and the fuel cell engine has a closed environment space inside the movable environmental chamber (1), and the fuel cell engine is connected to the movable environmental chamber (1) to move horizontally. Hydrogen is introduced into the fuel cell engine through the hydrogen connection port, air is introduced into the fuel cell engine through the air connection port, and the horizontal vibration control module (91) controls the horizontal vibration power device to apply a horizontal vibration test to the fuel cell engine; then the fuel cell engine is mounted on a vertical vibration table (10), the environmental chamber movement control system (2) moves the movable environmental chamber (1) to the vertical vibration table (10) of the vibration system (8) and the fuel cell engine forms a closed environmental space inside the movable environmental chamber (1), hydrogen is introduced into the fuel cell engine through the hydrogen connection port, air is introduced into the fuel cell engine through the air connection port, and the vertical vibration control module (101) controls the vertical vibration power device to apply a vertical vibration test to the fuel cell engine; B. Install the fuel cell engine on a horizontal vibration table (9), start the hydrogen monitoring sensor (12) and the temperature and humidity sensor assembly (11), connect the hydrogen source through the hydrogen refrigeration device (13) and introduce hydrogen into the fuel cell engine through the hydrogen connection port, introduce air into the fuel cell engine through the air refrigeration device (14), start the fuel cell engine and set the working state, move the movable environmental box (1) to the horizontal vibration table (9) of the vibration system (8) through the environmental box movement control system (2) so that the fuel cell engine forms a closed environmental space inside the movable environmental box (1), and the horizontal vibration control module (91) controls the horizontal vibration power device to apply a horizontal vibration test to the fuel cell engine; then install the fuel cell engine on a vertical vibration table (10), the environmental box movement control system (2) moves the movable environmental box (1) to the vertical vibration table (10) of the vibration system (8) so that the fuel cell engine forms a closed environmental space inside the movable environmental box (1), and the vertical vibration control module (101) controls the vertical vibration power device to apply a vertical vibration test to the fuel cell engine; During the horizontal vibration test or / and the vertical vibration test of the fuel cell engine, the hydrogen leakage inside the movable environmental box (1) is monitored by the hydrogen monitoring sensor (12); the top of the movable environmental box (1) is provided with a forced ventilation system, the forced ventilation system comprising an openable skylight and an exhaust fan; when the hydrogen monitoring sensor (12) detects that the oxygen concentration inside the movable environmental box (1) reaches a first set warning threshold, the hydrogen monitoring sensor (12) triggers an audible and visual alarm to give a warning prompt; when the hydrogen monitoring sensor (12) detects that the oxygen concentration inside the movable environmental box (1) reaches a second set warning threshold, the second set warning threshold is greater than the first set warning threshold, the electromagnetic valve on the hydrogen connection port is controlled to close to cut off the hydrogen gas supply, and at the same time the hydrogen monitoring sensor (12) transmits a signal to the forced ventilation system, the forced ventilation system opens the openable skylight and starts the exhaust fan to forcibly exhaust the gas inside the movable environmental box (1); During a horizontal vibration test or / and a vertical vibration test of a fuel cell engine, the temperature and humidity inside the movable environmental chamber (1) are monitored by a temperature and humidity sensor assembly (11); C. Adjust the working state of the fuel cell engine, adjust the temperature of the supplied hydrogen through the hydrogen refrigeration device (13), adjust the temperature of the supplied air through the air refrigeration device (14), and perform vibration tests under different working conditions according to step B.

8. The vibration testing method according to claim 7, characterized in that: Also comprising step D; D. During the vibration test in step B or / and step C, the movable environmental box (1) is also provided with a nitrogen or inert gas supply port, through which nitrogen or inert gas is filled into the movable environmental box (1) for safety protection.

9. The vibration testing method according to claim 7, characterized in that: The vibration system (8) is provided with a flexible sealing connection part A around the horizontal vibration table (9), and the bottom opening of the movable environmental chamber (1) is sealed by the flexible sealing connection part A; the vibration system (8) is provided with a flexible sealing connection part B around the vertical vibration table (10), and the bottom opening of the movable environmental chamber (1) is sealed by the flexible sealing connection part B.

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