A quick connection device and method for a pagoda connector during fuel cell stack testing

Abstract

This invention relates to the field of fuel cell testing technology and discloses a quick connection device and method for a pagoda connector during fuel cell stack testing. The device includes a mounting plate with a movable frame connected to it via a movable component. The movable frame has several clamping holes machined through it. A clamping mechanism is provided on the end wall of each clamping hole. The clamping mechanism includes a clamping cavity formed on the end wall of the clamping hole. Connecting balls are rotatably connected in a circular array on the end wall of the clamping cavity. An elastic air tube clamping method is used. The air tube is made of a soft material, which will not damage the clamped hose. Manual inflation and deflation are used to clamp the hose, making operation convenient. The pressure can be adjusted according to the pressure of the main medium to avoid leakage. This method allows for inflation and clamping of the air tube using a ring-shaped air tube, and enables the air tube to automatically and quickly connect to the pagoda connector, driving the air tube to move. This results in high efficiency and improves the efficiency of fuel cell testing.

Description

Technical Field

[0001] This invention belongs to the field of fuel cell testing technology, specifically a quick connection device and method for a pagoda connector during fuel cell stack testing. Background Technology

[0002] A fuel cell is a chemical device that directly converts the chemical energy of fuel into electrical energy; it is also known as an electrochemical generator. It is the fourth type of power generation technology after hydropower, thermal power generation, and nuclear power generation. Because fuel cells convert the Gibbs free energy portion of the fuel's chemical energy into electrical energy through an electrochemical reaction, they are not limited by the Carnot cycle effect, resulting in high efficiency. Furthermore, fuel cells use fuel and oxygen as raw materials and have no mechanical transmission components, thus emitting very few harmful gases and having a long service life. Therefore, from the perspective of energy conservation and environmental protection, fuel cells are the most promising power generation technology.

[0003] When testing fuel cell stacks, the pagoda connector is usually clamped with a hose clamp. However, steel hose clamps can easily damage the hose, and improper operation can easily lead to air leakage. They are also inconvenient to disassemble and assemble, and take a long time, which greatly affects the testing efficiency and cost. Summary of the Invention

[0004] In view of the above situation and to overcome the defects of the prior art, the present invention provides a quick connection device and method for the pagoda connector during fuel cell stack testing, which effectively solves the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a method for quickly connecting a pagoda connector during fuel cell stack testing, comprising the following steps;

[0006] Step 1: Place the fuel cell on the test bench;

[0007] Step 2: Put the tubing onto the pagoda connector and the loop tubing onto the connector;

[0008] Step 3: Set and measure the pressure of the medium introduced into the hose, and pre-determine the pressure of the corresponding medium introduced into the hose;

[0009] Step 4: Supply gas through the gas source, open the three-way valve to allow gas to flow, and introduce gas at the corresponding pressure into the annular air tube according to the pressure in the hose, so that the annular air tube is filled with gas and expands to clamp the hose, thereby compressing the hose.

[0010] Step 5: Monitor the pressure in the hose at any time, and adjust the gas pressure entering the annular air tube as needed to better clamp the hose.

[0011] Step Six: After the test is complete, unscrew the three-way valve to release the gas in the annular air tube and remove the hose.

[0012] This invention provides a quick connection device for a pagoda connector during fuel cell stack testing. Based on the aforementioned quick connection method for a pagoda connector during fuel cell stack testing, it includes a mounting plate. A movable frame is connected to the mounting plate via a movable component. Several clamping holes are machined through the movable frame. A clamping mechanism is provided on the end wall of each clamping hole. The clamping mechanism includes a clamping cavity formed on the end wall of the clamping hole. Connecting balls are rotatably connected in a circumferential array on the end wall of the clamping cavity. A spring rod is connected to the outer surface of each connecting ball. An annular air pipe connecting block is fixedly connected to the end of the spring rod away from the connecting ball. The annular air pipe connecting block is circumferentially fixedly connected to the outer surface of an annular air pipe. A telescopic tube is connected to the annular air pipe. The telescopic tube, located away from the annular air pipe, is connected to a through hole at its end. The through hole is machined through the end wall of the compression chamber. A fixed pipe is fixedly installed on the end wall of the movable frame, and the fixed pipe communicates with the through hole. An air pipe connects the fixed pipe to the connector. The connector is fixedly installed on a three-way valve. The three-way valve is fixedly installed on the end wall of the flow guide box. The flow guide box is fixedly installed at the outlet end of the three-way tube. The inlet end of the three-way tube is fixedly connected to an air source. The air source is installed on a test bench. A one-way valve is provided at the connection between the three-way tube and the flow guide box. A flow valve is provided at the connection between the flow guide box and the three-way valve. A flow guide cavity is provided inside the flow guide box. The flow valve communicates with the flow guide cavity, and the one-way valve communicates with the flow guide cavity.

[0013] Preferably, the movable frame is provided with a clamping mechanism, the clamping mechanism including a mounting block fixedly connected to the movable frame at the edge of the pressing hole, an auxiliary electric push rod fixedly connected to the inner surface of the mounting block, a first arc-shaped clamping plate fixedly connected to the end of the auxiliary electric push rod away from the mounting block, an auxiliary block fixedly connected to the surface of the first arc-shaped clamping plate away from the movable frame, a clamping electric push rod fixedly connected to the inner surface of the auxiliary block, a second arc-shaped clamping plate fixedly connected to the end of the clamping electric push rod away from the auxiliary block, and a flexible hose clamped between the second arc-shaped clamping plate and the first arc-shaped clamping plate.

[0014] Preferably, the movable frame is provided with an auxiliary connection mechanism. The auxiliary connection mechanism includes a fixed block fixedly connected to the movable frame between the mounting blocks, a spreading electric push rod fixedly connected to the inner surface of the fixed block, a connecting block fixedly connected to the end of the spreading electric push rod away from the fixed block, an extension electric push rod fixedly connected to the surface of the connecting block near the movable frame, and a spherical block fixedly connected to the end of the extension electric push rod away from the connecting block. The spherical block extends into the hose, the hose is sleeved on the outer surface of the pagoda connector, the pagoda connector is fixedly connected to the outer surface of the fuel cell, and the fuel cell is placed on a test bench.

[0015] Preferably, the movable component includes a sliding groove on the bottom wall of the mounting plate, a lead screw rotatably connected between the end walls of the sliding groove, a power connection between the lead screw and a motor, a motor fixedly connected to the end wall of the mounting plate, a threaded connection between the lead screw and a nut block, a slidably connected between the end walls of the sliding groove, a crossbeam fixedly connected to the lower surface of the nut block, three height-adjustable electric push rods evenly fixed to the lower surface of the crossbeam, and the movable frame fixedly connected to the lower end of each height-adjustable electric push rod.

[0016] Preferably, a fixing plate is fixedly connected to the end wall of the mounting plate, and a mounting hole is machined through the fixing plate. The mounting hole is connected to the test bench by bolts.

[0017] Preferably, a pressure gauge is connected to the end of the hose furthest from the movable frame.

[0018] Preferably, the test bench is equipped with a control processor, which is connected to the air source signal, the one-way valve signal, the flow valve signal, the three-way valve signal, and the operation panel signal. The operation panel is mounted on the test bench. The control processor is also connected to the motor signal, the height adjustment electric push rod signal, the expansion electric push rod signal, the extension electric push rod signal, the auxiliary electric push rod signal, and the clamping electric push rod signal.

[0019] Compared with the prior art, the beneficial effects of the present invention are:

[0020] 1. The quick connection method for the pagoda connector during fuel cell stack testing provided by this invention adopts an elastic air tube clamping method. The air tube is made of soft material, which will not damage the clamped hose. The hose is clamped by manually filling and releasing air, which is convenient to operate. The pressure can be adjusted according to the pressure of the main medium to avoid air leakage.

[0021] 2. The quick connection device for the pagoda connector during fuel cell stack testing provided by this invention can realize the use of annular air tubes to pressurize the air tubes and enable the air tubes to automatically and quickly connect to the pagoda connectors, thereby driving the air tubes to move. This results in high working efficiency and improves the efficiency of fuel cell testing. Attached Figure Description

[0022] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof.

[0023] In the attached diagram:

[0024] Figure 1 This is a flowchart illustrating a method for quickly connecting a pagoda connector during fuel cell stack testing according to the present invention.

[0025] Figure 2 This is a schematic diagram of the first orientation of a quick-connect device for a pagoda connector during fuel cell stack testing according to the present invention.

[0026] Figure 3 This is a schematic diagram of the second direction structure of a quick connection device for a pagoda connector during fuel cell stack testing according to the present invention;

[0027] Figure 4 This is a third-direction structural schematic diagram of a quick-connect device for a pagoda connector during fuel cell stack testing according to the present invention;

[0028] Figure 5 This is a schematic diagram of the clamping mechanism in a quick connection device for a pagoda connector during fuel cell stack testing according to the present invention.

[0029] Figure 6 This is a schematic diagram of the internal structure of the movable frame in a quick connection device for a pagoda connector during fuel cell stack testing according to the present invention.

[0030] Figure 7 This is a schematic diagram of the internal structure of the flow guide box in a quick connection device for a pagoda connector during fuel cell stack testing according to the present invention.

[0031] Figure 8 This is a schematic diagram of a fuel cell with a pagoda connector.

[0032] In the diagram: 1-Mounting plate, 2-Fixing plate, 3-Mounting hole, 4-Horizontal frame, 5-Height adjustment electric push rod, 6-Moving frame, 7-Fixing pipe, 8-Hose, 9-Air pipe, 10-Connector, 11-Three-way valve, 12-Flow guide box, 13-Air source, 14-Three-way pipe, 15-Fixing block, 16-Mounting block, 18-Connecting block, 19-Spreading electric push rod, 20-Auxiliary electric push rod, 21-Auxiliary block, 22-First arc-shaped clamping plate, 23-The 24-Clamping electric push rod, 25-Spherical block, 26-Extending electric push rod, 27-Nut block, 28-Slide groove, 29-Screw rod, 30-Motor, 31-Pressure hole, 32-Pressure chamber, 33-Connecting ball, 34-Through hole, 35-Telescopic tube, 36-Spring rod, 37-Annular air pipe connecting block, 38-Annular air pipe, 39-Flow valve, 40-Guide chamber, 41-One-way valve, 42-Fuel cell, 43-Pagoda connector. Detailed Implementation

[0033] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0034] like Figure 1 As shown, the present invention provides a method for quickly connecting the pagoda connector during fuel cell stack testing, the steps of which include:

[0035] Step 1: Place the fuel cell on the test bench;

[0036] Step 2: Put the tubing onto the pagoda connector and the loop tubing onto the connector;

[0037] Step 3: Set and measure the pressure of the medium introduced into the hose, and pre-determine the pressure of the corresponding medium introduced into the hose;

[0038] Step 4: Supply gas through the gas source, open the three-way valve to allow gas to flow, and introduce gas at the corresponding pressure into the annular air tube according to the pressure in the hose, so that the annular air tube is filled with gas and expands to clamp the hose, thereby compressing the hose.

[0039] Step 5: Monitor the pressure in the hose at any time, and adjust the gas pressure entering the annular air tube as needed to better clamp the hose.

[0040] Step Six: After the test is complete, unscrew the three-way valve to release the gas in the annular air tube and remove the hose.

[0041] like Figure 2-7As shown, this invention provides a quick connection device for a pagoda connector during fuel cell stack testing. Based on the above-mentioned quick connection method for a pagoda connector during fuel cell stack testing, it includes a mounting plate 1, which is made of lightweight metal material. The outer surface of the mounting plate 1 is smooth. A movable frame 6 is connected to the mounting plate 1 via a movable component. The movable frame 6 is also made of lightweight metal material. Three sets of clamping holes 31 are machined through the movable frame 6. Each set of clamping holes 31 consists of two symmetrically arranged clamping holes 31. The inner surface of the clamping holes 31 is smooth, and the clamping holes 31 facilitate the passage of a flexible hose 8. The flexible hose 8 is made of rubber material and has a certain degree of elasticity. The end wall of the clamping hole 31 is provided with... A clamping mechanism is provided to clamp the hose 8. The clamping mechanism includes a clamping cavity 32 formed on the end wall of the clamping hole 31. Connecting balls 33 are rotatably connected in a circumferential array on the end wall of the clamping cavity 32. The spring rod 36 can rotate 360 ​​degrees, facilitating its installation. The spring rod 36 is connected to the outer surface of the connecting ball 33. The spring rod 36 is an elastic telescopic rod. An annular air tube connecting block 37 is fixedly connected to the end of the spring rod 36 away from the connecting ball 33. The annular air tube connecting block 37 is made of rubber and is glued to the end of the spring rod 36. The annular air tube connecting block 37 is circumferentially fixedly connected to... The outer surface of the annular air tube 38 is made of rubber material, giving it a certain degree of elasticity. The annular air tube 38 is used to compress the flexible hose 8, preventing leakage when the hose 8 is fitted onto the outer surface of the pagoda connector 43. A telescopic tube 35 is connected to the annular air tube 38, allowing it to extend and retract. The end of the telescopic tube 35 away from the annular air tube 38 is fixedly connected to a through hole 34. The through hole 34 is machined through the end wall of the compression cavity 32. A fixing tube 7 is fixedly installed on the end wall of the movable frame 6, communicating with the through hole 34. The fixing tube 7 is made of the same material as the movable frame 6 and is hollow inside. An air pipe 9, made of rubber, is connected between the fixed pipe 7 and the connector 10. The connector 10 is fixedly mounted on a three-way valve 11 and is used to detect the air pressure inside the air pipe 9. The three-way valve 11 is an existing three-way valve and is fixedly mounted on the end wall of the flow guide box 12. The flow guide box 12 is used to install the three-way valve 11 and is made of lightweight metal. The flow guide box 12 is fixedly mounted at the outlet end of a three-way pipe 14, also made of lightweight metal, and is used to install the flow guide box 12. The inlet end of the three-way pipe 14 is fixedly connected to an air source 13 for supplying air.The gas source 13 is installed on the test bench. A one-way valve 41 is provided at the connection between the three-way pipe 14 and the flow guide box 12 to prevent gas backflow. A flow valve 39 is provided at the connection between the flow guide box 12 and the three-way valve 11 to regulate the gas flow rate entering the gas pipe 9. A flow guide cavity 40 is provided inside the flow guide box 12. The flow valve 39 and the one-way valve 41 are connected to the flow guide cavity 40. The flow guide box 12 and the three-way pipe 14 are sealed, and the flow guide box 12 and the three-way valve 11 are also sealed.

[0042] The gas source 13 is activated to supply gas. The gas enters the guide chamber 40 through the three-way pipe 14 and the one-way valve 41, then flows through the flow valve 39, the three-way valve 11, the connector 10, and the air pipe 9. It then passes through the fixed pipe 7, the through hole 34, and the telescopic pipe 35 into the annular air pipe 38, causing the annular air pipe 38 to expand and press against the outer surface of the flexible hose 8. The flow valve 39 regulates the flow rate of the gas entering the air pipe 9, resulting in different air pressures in different annular air pipes 38. This allows for adaptive adjustment of the air pressure in the annular air pipe 38 based on different media introduced into the flexible hose 8. After the test is completed, the three-way valve 11 is opened to release the gas from the air pipe 9 and the annular air pipe 38.

[0043] Advantageously, the movable frame 6 is provided with a clamping mechanism for clamping the hose 8, facilitating its connection to the pagoda connector 43. The clamping mechanism includes a mounting block 16 fixedly connected to the movable frame 6 at the edge of the pressing hole 31. The mounting block 16 is made of lightweight metal and has a small volume to accommodate the length of the pagoda connector 43. An auxiliary electric push rod 20 is fixedly connected to the inner surface of the mounting block 16. The auxiliary electric push rod 20 is also made of lightweight metal and has a short stroke. A first arc-shaped clamping plate 22 is fixedly connected to the end of the auxiliary electric push rod 20 away from the mounting block 16. The first arc-shaped clamping plate 22 is also made of lightweight metal. The inner surface of the first arc-shaped clamping plate 22 is provided with an anti-slip protective pad. An auxiliary block 21 is fixedly connected to the surface of the first arc-shaped clamping plate 22 away from the movable frame 6. The auxiliary block 21 is made of lightweight metal material and is used to install the clamping electric push rod 24. The clamping electric push rod 24 is fixedly connected to the inner surface of the auxiliary block 21. The clamping electric push rod 24 is made of lightweight metal material and has a relatively short stroke. A second arc-shaped clamping plate 23 is fixedly connected to the end of the clamping electric push rod 24 away from the auxiliary block 21. The surface of the second arc-shaped clamping plate 23 near the first arc-shaped clamping plate 22 is provided with an anti-slip protective pad to prevent the hose 8 from slipping. The hose 8 is clamped between the second arc-shaped clamping plate 23 and the first arc-shaped clamping plate 22.

[0044] Thus, the hose 8 passes through the clamping hole 31, energizing the auxiliary electric push rod 20, thereby moving the first arc-shaped clamping plate 22 to a suitable position to clamp the hose 8, so that the hose 8 is located between the first arc-shaped clamping plate 22 and the second arc-shaped clamping plate 23. Energizing the clamping electric push rod 24, thereby moving the second arc-shaped clamping plate 23 closer to the first arc-shaped clamping plate 22, so that the second arc-shaped clamping plate 23 and the first arc-shaped clamping plate 22 cooperate to clamp the hose 8.

[0045] Advantageously, the movable frame 6 is provided with an auxiliary connecting mechanism, which is used to expand the hose 8 to facilitate the hose 8 being fitted onto the pagoda connector 43. The auxiliary connecting mechanism includes a fixing block 15 fixedly connected to the movable frame 6 between the mounting blocks 16. The fixing block 15 is made of the same material as the mounting blocks 16, and the height of the fixing block 15 is set to adapt to the length of the pagoda connector 43. An expanding electric push rod 19 is fixedly connected to the inner surface of the fixing block 15. The expanding electric push rod 19 is made of metal. A connecting block 18 is fixedly connected to the end of the expanding electric push rod 19 away from the fixing block 15. The connecting block 18 is used to extend the electric push rod 26. The connecting block 18 is fixedly connected to an extension electric push rod 26 on the side near the movable frame 6. The extension electric push rod 26 is made of metal and is used to install the spherical block 25. The end of the extension electric push rod 26 away from the connecting block 18 is fixedly connected to the spherical block 25, which is also made of metal and has a smooth outer surface. The spherical block 25 enters the hose 8 and supports it. The spherical block 25 extends into the hose 8, which is fitted onto the outer surface of the pagoda connector 43. The pagoda connector 43 is fixedly connected to the outer surface of the fuel cell 42, which is placed on a test bench.

[0046] This energizes the extension electric push rod 26, causing the spherical block 25 to enter the hose 8. It also energizes the opening electric push rod 19, causing the connecting block 18 to move towards the fixing block 15. This, in turn, causes the spherical block 25 to move and open the hose 8, facilitating the connection of the hose 8 to the pagoda connector 43. After connection, the spherical block 25 exits the hose 8.

[0047] Advantageously, the movable component includes a groove 28 on the bottom wall of the mounting plate 1, the inner surface of the groove 28 being smooth and the outer surface of the groove 28 being provided with a wear-resistant material. A lead screw 29, made of metal, is rotatably connected between the end walls of the groove 28. The lead screw 29 is also provided with a wear-resistant material on its outer surface. The lead screw 29 is poweredly connected to a motor 30, which drives the lead screw 29 to rotate. The motor 30 is fixedly connected to the end wall of the mounting plate 1. The lead screw 29 is threadedly connected to a nut block 27, which is made of lightweight metal. The outer surface of the nut block 27 is smooth and the outer surface of the nut block 27 is provided with wear-resistant material. The nut block 27 is slidably connected between the end walls of the slide groove 28. A crossbeam 4 is fixedly connected to the lower surface of the nut block 27. The crossbeam 4 is made of lightweight metal material. The crossbeam 4 is used to install the height-adjusting electric push rod 5. Three height-adjusting electric push rods 5 are evenly fixed to the lower surface of the crossbeam 4. The height-adjusting electric push rods 5 are made of metal material. The height-adjusting electric push rods 5 facilitate the adjustment of the height of the movable frame 6. The lower end of the height-adjusting electric push rod 5 is fixedly connected to the movable frame 6.

[0048] The motor 30 is then started, which drives the lead screw 29 to rotate. The lead screw 29 is threadedly connected to the nut block 27, which in turn drives the cross frame 4 to move, which in turn drives the height-adjusting electric push rod 5 to move, which in turn drives the moving frame 6 to move. The height-adjusting electric push rod 5 is energized, which adjusts the height of the moving frame 6 until the clamping hole 31 is level with the pagoda connector 43.

[0049] Advantageously, a fixing plate 2 is fixedly connected to the end wall of the mounting plate 1. The fixing plate 2 is made of lightweight metal material, and a mounting hole 3 is machined through the fixing plate 2. The mounting hole 3 is connected to the test bench by bolts.

[0050] Advantageously, a pressure gauge is connected to the end of the hose 8 away from the movable frame 6, and the pressure gauge is used to measure the pressure of the medium flowing through the hose 8.

[0051] Advantageously, the test bench is equipped with a control processor, which is signal-connected to the air source 13, the one-way valve 41, the flow valve 39, the three-way valve 11, and the operation panel, which is mounted on the test bench. The control processor is also signal-connected to the motor 30, the height adjustment electric push rod 5, the spreading electric push rod 19, the extension electric push rod 26, the auxiliary electric push rod 20, and the clamping electric push rod 24.

[0052] The corresponding commands are input on the operation panel, which transmits the commands to the control processor. The control processor then sends corresponding signals to the one-way valve 41, the flow valve 39, the three-way valve 11, the motor 30, the height-adjusting electric push rod 5, the opening electric push rod 19, the extension electric push rod 26, the auxiliary electric push rod 20, and the clamping electric push rod 24, thereby causing the one-way valve 41, the flow valve 39, the three-way valve 11, the motor 30, the height-adjusting electric push rod 5, the opening electric push rod 19, the extension electric push rod 26, the auxiliary electric push rod 20, and the clamping electric push rod 24 to perform corresponding movements.

[0053] In the working process of this invention, the fixing plate 2 is installed on the test bench, the fuel cell 42 is placed on the test bench, and corresponding instructions are input on the operation panel. The operation panel transmits the instructions to the control processor, and the control processor sends corresponding signals to the one-way valve 41, the flow valve 39, the three-way valve 11, the motor 30, the height-adjusting electric push rod 5, the opening electric push rod 19, the extension electric push rod 26, the auxiliary electric push rod 20, and the clamping electric push rod 24, thereby enabling the one-way valve 41, the flow valve 39, the three-way valve 11, the motor 30, the height-adjusting electric push rod 5, the opening electric push rod 19, the extension electric push rod 26, and the... The auxiliary electric push rod 20 and the clamping electric push rod 24 move accordingly, allowing the hose 8 to pass through the clamping hole 31. Power is supplied to the auxiliary electric push rod 20, causing the first arc-shaped clamping plate 22 to move to a suitable position to clamp the hose 8, positioning it between the first arc-shaped clamping plate 22 and the second arc-shaped clamping plate 23. Power is supplied to the clamping electric push rod 24, causing the second arc-shaped clamping plate 23 to move closer to the first arc-shaped clamping plate 22, thus allowing the second arc-shaped clamping plate 23 and the first arc-shaped clamping plate 22 to cooperate in clamping the hose 8. Power is supplied to the extension electric push rod 26, causing the spherical block 25 to enter the hose 8, providing... The electric push rod 19 is energized, causing the connecting block 18 to move closer to the fixed block 15, which in turn causes the spherical block 25 to move, thus opening the hose 8 and facilitating its connection to the pagoda connector 43. The motor 30 is then activated, causing the lead screw 29 to rotate. The lead screw 29 is threadedly connected to the nut block 27, which in turn moves the crossbeam 4, thereby moving the height-adjusting electric push rod 5, which in turn moves the movable frame 6. Energizing the height-adjusting electric push rod 5 allows for height adjustment of the movable frame 6 until the clamping hole 31 is level with the pagoda connector 43, thus moving the hose 8. The spherical block 25 is fitted onto the pagoda connector 43, so that the annular air tube 38 is located on the pagoda connector 43. After the fitting is completed, the spherical block 25 is removed from the hose 8. The air source 13 is activated to supply air. The gas passes through the three-way pipe 14, through the one-way valve 41, and into the guide chamber 40. It then flows through the flow valve 39, through the three-way valve 11, through the connector 10, and into the air tube 9. Finally, it passes through the fixed pipe 7, through the through hole 34, and through the telescopic pipe 35 into the annular air tube 38, thereby inflating the annular air tube 38 and pressing it against the outer surface of the hose 8. The flow valve 39 regulates the flow rate of the gas entering the air tube 9.This allows for different air pressures in the various annular air tubes 38, enabling adaptive adjustment of the air pressure in the annular air tubes 38 based on the different media introduced into the hose 8. After the test is completed, the three-way valve 11 is opened to release the gas from the air tube 9, thereby releasing the gas from the annular air tubes 38.

[0054] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0055] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A method for quickly connecting a pagoda connector during fuel cell stack testing, characterized in that: A quick connection device for the pagoda connector during fuel cell stack testing is adopted, including a mounting plate (1). A movable frame (6) is connected to the mounting plate (1) via a movable component. Several clamping holes (31) are machined through the movable frame (6). A clamping mechanism is provided on the end wall of each clamping hole (31). The clamping mechanism includes a clamping cavity (32) opened on the end wall of the clamping hole (31). Connecting balls (33) are rotatably connected in a circular array on the end wall of the clamping cavity (32). A spring rod (36) is connected to the outer surface of the connecting ball (33). An annular air tube connecting block (37) is fixedly connected to the end of the spring rod (36) away from the connecting ball (33). The annular air tube connecting blocks (37) are fixedly connected to the outer surface of the annular air tube (38) in a circumferential array. A telescopic tube (35) is connected to the annular air tube (38). The end of the telescopic tube (35) away from the annular air tube (38) is connected to a through hole (34). The through hole (34) penetrates... The end wall of the pressing cavity (32) is machined through. A fixed pipe (7) is fixedly installed on the end wall of the movable frame (6) and the fixed pipe (7) is connected to the through hole (34). An air pipe (9) is connected between the fixed pipe (7) and the connector (10). The connector (10) is fixedly installed on the three-way valve (11). The three-way valve (11) is fixedly installed on the end wall of the guide box (12). The guide box (12) is fixedly installed at the outlet end of the three-way pipe (14). The inlet end of the pipe (14) is fixedly connected to the gas source (13), which is installed on the test bench. A one-way valve (41) is provided at the connection between the three-way pipe (14) and the flow guide box (12). A flow valve (39) is provided at the connection between the flow guide box (12) and the three-way valve (11). A flow guide cavity (40) is provided inside the flow guide box (12). The flow valve (39) is connected to the flow guide cavity (40). The one-way valve (41) is connected to the flow guide cavity (40). A method for quickly connecting a pagoda connector during fuel cell stack testing, comprising the following steps; Step 1: Place the fuel cell on the test bench; Step 2: Put the tubing onto the pagoda connector and the loop tubing onto the connector; Step 3: Set and measure the pressure of the medium introduced into the hose, and pre-determine the pressure of the corresponding medium introduced into the hose; Step 4: Supply gas through the gas source, open the three-way valve to allow gas to flow, and introduce gas at the corresponding pressure into the annular air tube according to the pressure in the hose, so that the annular air tube is filled with gas and expands to clamp the hose, thereby compressing the hose. Step 5: Monitor the pressure in the hose at any time, and adjust the gas pressure entering the annular air tube as needed to better clamp the hose. Step Six: After the test is complete, unscrew the three-way valve to release the gas in the annular air tube and remove the hose.

2. The method for quickly connecting a pagoda connector during fuel cell stack testing according to claim 1, characterized in that: The movable frame (6) is provided with a clamping mechanism, which includes a mounting block (16) fixedly connected to the movable frame (6) at the edge of the pressing hole (31), an auxiliary electric push rod (20) fixedly connected to the inner surface of the mounting block (16), a first arc-shaped clamping plate (22) fixedly connected to the end of the auxiliary electric push rod (20) away from the mounting block (16), an auxiliary block (21) fixedly connected to the surface of the first arc-shaped clamping plate (22) away from the movable frame (6), a clamping electric push rod (24) fixedly connected to the inner surface of the auxiliary block (21), a second arc-shaped clamping plate (23) fixedly connected to the end of the clamping electric push rod (24) away from the auxiliary block (21), and a flexible hose (8) clamped between the second arc-shaped clamping plate (23) and the first arc-shaped clamping plate (22).

3. The method for quickly connecting the pagoda connector during fuel cell stack testing according to claim 2, characterized in that: The mobile frame (6) is provided with an auxiliary connection mechanism. The auxiliary connection mechanism includes a fixed block (15) fixedly connected to the mobile frame (6) between the mounting blocks (16). An electric push rod (19) is fixedly connected to the inner surface of the fixed block (15). A connecting block (18) is fixedly connected to the end of the electric push rod (19) away from the fixed block (15). An extension electric push rod (26) is fixedly connected to the surface of the connecting block (18) near the mobile frame (6). A spherical block (25) is fixedly connected to the end of the extension electric push rod (26) away from the connecting block (18). The spherical block (25) extends into the hose (8). The hose (8) is sleeved on the outer surface of the pagoda connector (43). The pagoda connector (43) is fixedly connected to the outer surface of the fuel cell (42). The fuel cell (42) is placed on the test bench.

4. The method for quickly connecting the pagoda connector during fuel cell stack testing according to claim 3, characterized in that: The moving component includes a sliding groove (28) on the bottom wall of the mounting plate (1), a lead screw (29) rotatably connected between the end walls of the sliding groove (28), the lead screw (29) being poweredly connected to a motor (30), the motor (30) being fixedly connected to the end wall of the mounting plate (1), the lead screw (29) being threadedly connected to a nut block (27), the nut block (27) being slidably connected between the end walls of the sliding groove (28), a crossbeam (4) being fixedly connected to the lower surface of the nut block (27), three height-adjustable electric push rods (5) being evenly fixed to the lower surface of the crossbeam (4), and the moving frame (6) being fixedly connected to the lower end of the height-adjustable electric push rods (5).

5. The method for quickly connecting the pagoda connector during fuel cell stack testing according to claim 4, characterized in that: A fixing plate (2) is fixedly connected to the end wall of the mounting plate (1). A mounting hole (3) is machined through the fixing plate (2). The mounting hole (3) is connected to the test bench by bolts.

6. The method for quickly connecting the pagoda connector during fuel cell stack testing according to claim 5, characterized in that: A pressure gauge is connected to the end of the hose (8) on the side away from the mobile frame (6).

7. A method for quickly connecting a pagoda connector during fuel cell stack testing according to claim 6, characterized in that: The test bench is equipped with a control processor, which is signal-connected to the air source (13), the one-way valve (41), the flow valve (39), the three-way valve (11), and the operation panel. The operation panel is mounted on the test bench. The control processor is signal-connected to the motor (30), the height adjustment electric push rod (5), the spreading electric push rod (19), the extension electric push rod (26), the auxiliary electric push rod (20), and the clamping electric push rod (24).

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