A turbo pump reliability test device

Abstract

The utility model relates to test device technical field discloses a kind of turbine pump reliability test device, including sealed box, turbine pump main body and air compressor, the workbench is integrally connected in the inner bottom of sealed box, the turbine pump main body is fixedly installed at the top of workbench, the backplate of sealed box is connected with air inlet pipe, the turbine pump main body is located at the back of sealed box, the utility model ensures that sealed box is sealed, starts air compressor, its gas outlet end is sent gas to the inside of sealed box through air inlet pipe by gas pipe, with the gas in sealed box increasing constantly, gradually increasing, gas pressure detector real-time monitoring box gas pressure value, synchronous starting turbine pump main body carries out normal operation under high pressure environment, and the operation state real-time detection. This kind of test can effectively detect the sealing performance of turbine pump under high pressure, timely find the leakage problem caused by pressure change, and the stability of pump body structure under high pressure can be tested simultaneously.

Description

Technical Field

[0001] This utility model relates to the field of testing equipment technology, and in particular to a turbine pump reliability testing device. Background Technology

[0002] A turbopump is a power device that uses a turbine to drive an impeller to pressurize and transport fluids. Its core function is to efficiently convert mechanical energy into the pressure and kinetic energy of the fluid. It is widely used in aerospace, energy, chemical, and automotive industries, and is particularly suitable for high-pressure, high-flow-rate, and high-speed fluid transport scenarios (such as rocket engine propellant transport and power plant boiler feedwater). Reliability testing is the activity conducted to evaluate the functional reliability of a product throughout its specified lifespan under all expected conditions of use, transportation, or storage. It involves exposing the product to natural or artificial environmental conditions to evaluate its performance under actual use, transportation, and storage conditions, and to analyze the degree and mechanism of influence of environmental factors.

[0003] An existing turbopump reliability testing device (announcement number: CN223203276U) has at least the following drawbacks: The reference document simulates gas and liquid at different temperatures to conduct temperature corrosion resistance tests on the turbopump body. However, in practical applications such as aerospace and energy extraction, turbopumps not only need to withstand temperature changes and media corrosion, but also operate under complex environments for extended periods. For example, during rocket launches or vehicle transportation, they continuously endure vibrations and shocks; in deep well oil and gas transportation or high-pressure fluid systems, they must withstand the challenges of high-pressure environments on the pump body's sealing performance and structural strength. Existing testing methods cannot simulate these critical operating conditions, making it difficult to comprehensively verify the actual reliability of turbopumps. Therefore, it is necessary to develop a comprehensive testing device capable of simultaneously simulating vibrations and high-pressure environments to conduct comprehensive testing and inspection of the turbopump's structural stability, sealing performance, and impact resistance, ensuring its safe operation under actual complex conditions. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a reliability testing device for turbine pumps.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A turbopump reliability testing device includes a sealed box, a turbopump body, and an air compressor. A workbench is integrally connected to the bottom of the sealed box. The turbopump body is fixedly mounted on the top of the workbench. An air inlet pipe is connected through the back plate of the sealed box. The turbopump body is located on the back side of the sealed box. An air supply pipe is fixedly connected to the outlet end of the turbopump body, and the other end of the air supply pipe is fixedly connected to the air inlet pipe. Sealing sleeves are integrally connected to both side plates of the sealed box. The input and output pipes of the turbopump body are both integrally connected to several of the sealing sleeves. An exhaust pipe is integrally connected to one side of the sealed box. A vent valve is fixedly installed on the outer wall of the exhaust pipe. A pressure detector is fixedly installed on the side of the sealed box away from the exhaust pipe.

[0006] As a further embodiment of this utility model, the air pressure detector, the exhaust pipe and the two sets of sealing sleeves are all located outside the side plates on both sides of the sealing box. The main body of the turbine pump is provided with a box door on one side, and the top of the box door is rotatably connected to the top ear plate of the sealing box through a rotating shaft.

[0007] As a further embodiment of this utility model, a viewing window is fixedly installed in the middle of the box door, and a sealing ring is integrally connected to the box door near the back side. One side of the bottom end of the sealing ring is in contact with the outer side of the workbench, and all four sides of the sealing ring are tightly connected to the inner wall of the box opening.

[0008] As a further embodiment of this utility model, hydraulic rods are rotatably connected to both sides of the outer side of the sealing box by bolts. The telescopic ends of the two sets of hydraulic rods are inclined downward and rotatably connected to both sides of the bottom of the box door by bolts. A multi-axial vibration test device and a base are provided at the bottom of the sealing box.

[0009] As a further embodiment of this utility model, the multiaxial vibration test device is fixedly connected to the top of the base, the top of the multiaxial vibration test device is fixedly connected to the bottom of the sealed box, and a number of drive cylinders are fixedly connected to the top of the base.

[0010] As a further embodiment of this utility model, a plurality of the drive cylinders are distributed in the gaps of the multi-axial vibration test device, and a support frame is fixedly connected to the top of the telescopic end of the drive cylinder. The support frame is pushed against the bottom of the sealed box by the drive cylinder.

[0011] Compared with the prior art, the present invention has the following beneficial effects: After the turbine pump body is fixedly installed on the workbench of the sealed box, its input and output pipes are sealed and connected through the sealing sleeves on both sides of the sealed box. The box door is closed, and the vent valve on the exhaust pipe is also closed to ensure the airtightness of the sealed box. The air compressor is started, and its outlet pipe delivers gas into the sealed box through the inlet pipe. As the gas inside the sealed box increases, the pressure gradually rises, and the pressure detector monitors the pressure value inside the box in real time. Simultaneously, the turbine pump body is started and operated normally under high pressure, with its operating status monitored in real time. After the test is completed, the vent valve is opened, and the gas inside the sealed box is slowly discharged through the exhaust pipe to restore the pressure to normal, ending the test. This test effectively detects the sealing performance of the turbine pump under high pressure, promptly identifies leakage problems caused by pressure changes, and verifies the stability of the pump body structure under high pressure, preventing structural strength issues from affecting its service life.

[0012] While the turbopump body undergoes high-pressure testing, a multi-axial vibration testing device can be activated. Once activated, the device's internal excitation components generate multi-dimensional vibrational force according to preset parameters, simultaneously outputting reciprocating vibrations along the X, Y, and Z axes. This accurately simulates the undulating and bumpy conditions in real-world scenarios. The vibrational force is transmitted to the sealed chamber via rigid contact, causing the entire chamber and the turbopump body inside to move synchronously with the vibration device in a multi-axial, bumpy motion. This creates a bumpy environment within the sealed chamber that closely resembles actual working conditions, meeting the requirements for vibration reliability testing of the test components inside. Multi-axial vibration testing comprehensively verifies the turbopump's adaptability to complex vibrational conditions, ensuring that it will not experience performance fluctuations or structural damage due to multi-directional bumps during actual installation and use. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of a turbine pump reliability testing device proposed in this utility model; Figure 2 This is a schematic diagram of the sealed box of a turbine pump reliability testing device proposed in this utility model; Figure 3 This is a schematic diagram of the structure of the door of a turbine pump reliability testing device proposed in this utility model; Figure 4 This is a schematic diagram of the air compressor structure of the turbopump reliability testing device proposed in this utility model; Figure 5 This is a schematic diagram of the base of a turbine pump reliability testing device proposed in this utility model.

[0014] In the diagram: 1. Sealed box; 101. Workbench; 102. Air inlet pipe; 103. Sealing sleeve; 104. Exhaust pipe; 105. Air relief valve; 2. Hydraulic rod; 3. Box door; 301. Viewing window; 4. Air pressure detector; 5. Turbine pump body; 6. Air compressor; 601. Air supply pipe; 7. Base; 701. Drive cylinder; 702. Support frame; 8. Multi-axial vibration test device. Detailed Implementation

[0015] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0016] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0017] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0018] Reference Figures 1-5 A turbopump reliability testing device includes a sealed box 1, a turbopump body 5, and an air compressor 6. A workbench 101 is integrally connected to the bottom of the sealed box 1. The turbopump body 5 is fixedly installed on the top of the workbench 101. An air inlet pipe 102 is connected through the back plate of the sealed box 1. The turbopump body 5 is located on the back side of the sealed box 1. An air supply pipe 601 is fixedly connected to the air outlet end of the turbopump body 5. The other end of the air supply pipe 601 is fixedly connected to the air inlet pipe 102. Sealing sleeves 103 are integrally connected to both side plates of the sealed box 1. The input pipe and output pipe of the turbopump body 5 are both fixedly connected through to several sealing sleeves 103. An exhaust pipe 104 is fixedly connected through to one side of the sealed box 1. A vent valve 105 is fixedly installed on the outer wall of the exhaust pipe 104. A pressure detector 4 is fixedly installed on the side of the sealed box 1 away from the exhaust pipe 104.

[0019] In use, after the turbine pump body 5 is fixedly installed on the workbench 101 of the sealed box 1, its input pipe and output pipe are sealed and connected through the sealing sleeves 103 on both sides of the sealed box 1. The box door 3 is closed, and the vent valve 105 on the exhaust pipe 104 is also closed to ensure the airtightness of the sealed box 1. The air compressor 6 is started, and its outlet end delivers gas into the sealed box 1 through the air supply pipe 601 and the air inlet pipe 102. As the gas in the sealed box 1 increases, the air pressure gradually rises, and the air pressure detector 4 monitors the air pressure value in the box in real time. According to the test requirements, the vent valve 105 is opened in stages to make the air pressure in the sealed box 1 reach the preset high air pressure value (such as the air pressure environment of simulating deep wells, high altitudes, etc.) and keep it stable. During this process, the operating status of the turbine pump body 5 under high air pressure environment is continuously monitored, which can effectively detect the sealing performance of the turbine pump under high air pressure, detect leakage problems caused by air pressure changes in a timely manner, and at the same time test the stability of the pump body structure under high pressure, so as to avoid the service life affected by structural strength problems. After the test is completed, open the vent valve 105 and slowly discharge the gas in the sealed box 1 through the exhaust pipe 104 to restore the air pressure to normal pressure and end the test.

[0020] In this embodiment, the air pressure detector 4, the exhaust pipe 104 and the two sets of sealing sleeves 103 are all located outside the side plates on both sides of the sealing box 1. The turbine pump body 5 is provided with a box door 3 on one side. The top of the box door 3 is rotatably connected to the top ear plate of the sealing box 1 through a rotating shaft.

[0021] In use, the pressure detector 4 is connected to the inside of the sealed chamber 1 through a sealed interface, collecting the internal pressure data in real time and transmitting the data to an external monitoring and control system to determine whether the internal pressure meets the test requirements. Two sets of sealing sleeves 103 are respectively fitted onto the connection points between the pressure detector 4, the exhaust pipe 104, and the side plate of the sealed chamber 1. The connection gaps are filled by elastic seals (such as O-rings and fluororubber gaskets) inside the sleeves to prevent high-pressure gas from leaking from the interface, ensuring accurate pressure detection data and safe exhaust process.

[0022] In this embodiment, a viewing window 301 is fixedly installed in the middle of the door 3, and a sealing ring is integrally connected to the door 3 near the back side. One side of the bottom end of the sealing ring is attached to the outside of the workbench 101, and all four sides of the sealing ring are tightly connected to the inner wall of the opening of the sealed box 1.

[0023] In use, the viewing window 301 is made of high-strength transparent material and is sealed and installed in the middle of the chamber door 3. During the test, the operator can directly observe the status of the turbine pump inside the sealed chamber 1 through the viewing window 301, and can monitor the test process in real time without opening the chamber door 3, avoiding air pressure leakage and test interruption caused by frequent opening of the chamber during the test. When the chamber door 3 is closed, the bottom end of the sealing ring fits against the outside of the workbench 101, and the four sides are in close contact with the inner wall of the chamber opening of the sealed chamber 1, forming a full circumferential sealing surface. The high-pressure gas inside the chamber squeezes the sealing ring, causing the sealing ring to fit further against the sealing surface, filling the tiny gaps and achieving a sealing effect.

[0024] In this embodiment, hydraulic rods 2 are rotatably connected to both sides of the outer side of the sealing box 1 by bolts. The telescopic ends of the two sets of hydraulic rods 2 are inclined downward and are rotatably connected to the bottom sides of the box door 3 by bolts. The bottom of the sealing box 1 is provided with a multi-axial vibration test device 8 and a base 7.

[0025] In use, when the chamber door 3 is opened, the telescopic end of the hydraulic rod 2 extends outward. Because the hydraulic rod 2 is tilted downwards and its two ends are connected to the bottom of the sealing chamber 1 and the chamber door 3 respectively via bolts, the thrust of the telescopic end causes the bottom of the chamber door 3 to flip outwards, gradually opening the chamber door 3 around the connecting shaft with the sealing chamber 1. When the chamber door 3 is closed, the telescopic end of the hydraulic rod 2 retracts, and the pulling force pulls the bottom of the chamber door 3 to rotate inwards, gradually closing the chamber door 3 until it is sealed against the sealing chamber 1. The multi-axial vibration testing device 8 and the base 7 provide stable support for the sealing chamber 1, ensuring the stability of the chamber body during the opening and closing of the chamber door 3.

[0026] In this embodiment, the multiaxial vibration test device 8 is fixedly connected to the top of the base 7, the top of the multiaxial vibration test device 8 is fixedly connected to the bottom of the sealing box 1, and several drive cylinders 701 are fixedly connected to the top of the base 7.

[0027] During use, the turbine pump body 5 can be activated simultaneously with the high-pressure test and the multi-axial vibration test device 8. After the multi-axial vibration test device 8 is activated, its internal excitation components (such as multiple sets of electric vibrators) generate multi-dimensional vibration power according to preset parameters (such as vibration frequency, amplitude, and direction), which can synchronously output reciprocating vibrations along the X-axis (front and back), Y-axis (left and right), and Z-axis (up and down), accurately simulating the undulating and bumpy state in the actual scenario. Since the device is directly connected to the bottom of the sealed box 1, the vibration power is transmitted to the sealed box 1 through rigid contact, causing the entire sealed box 1 and the turbine pump body 5 inside to synchronously perform multi-axial bumpy movements with the vibration device, thereby creating a bumpy environment in the sealed box 1 that conforms to the actual working conditions, meeting the requirements for vibration reliability testing of the test pieces inside the box. In multi-axial vibration testing, key parameters such as the output pressure, flow rate, and speed of the turbopump can be monitored simultaneously to verify whether it can still maintain its design performance under bumpy conditions. This can more comprehensively verify the turbopump's adaptability to complex vibration conditions and ensure that it will not experience performance fluctuations or structural damage due to multi-directional vibrations during actual installation and use.

[0028] In this embodiment, a number of drive cylinders 701 are distributed in the gaps of the multiaxial vibration test device 8. A support frame 702 is fixedly connected to the top of the telescopic end of the drive cylinder 701. The support frame 702 is pushed against the bottom of the sealing box 1 by the drive cylinder 701.

[0029] In use, high-pressure testing and vibration testing can be conducted separately or simultaneously, increasing the versatility of the tests. When the turbine pump body 5 is undergoing high-pressure testing, the drive cylinder 701 is activated. The telescopic end of the drive cylinder 701 pushes the support frame 702 upward to rest against the bottom of the sealed box 1, supporting the sealed box 1 and distributing the support pressure of the multi-axial vibration test device 8. This prevents the high-pressure gas inside the test chamber from generating an outward expansion force on the chamber, indirectly increasing the load on the vibration components of the multi-axial vibration test device 8 and causing wear and affecting its service life. During vibration testing, the telescopic end of the drive cylinder 701 drives the support frame 702 to retract, moving it away from the bottom of the sealed box 1, facilitating vibration testing of the turbine pump body 5.

[0030] From the above description, it can be seen that the above embodiments of this utility model achieve the following technical effects: After the turbine pump body 5 is fixedly installed on the workbench 101 of the sealed box 1, its input pipe and output pipe are sealed and connected through the sealing sleeves 103 on both sides of the sealed box 1. The box door 3 is closed, and the vent valve 105 on the exhaust pipe 104 is closed at the same time to ensure the airtightness of the sealed box 1. The air compressor 6 is started, and its outlet end delivers gas to the inside of the sealed box 1 through the air supply pipe 601 and the air inlet pipe 102. As the gas in the sealed box 1 increases, the air pressure gradually rises, and the air pressure detector 4 monitors the air pressure value in the box in real time. According to the test requirements, the air pressure in the sealed box 1 is made to reach the preset high air pressure value and remain stable by opening the vent valve 105 in stages. During this process, the operating status of the turbine pump body 5 under high air pressure environment is continuously monitored, which can effectively detect the sealing performance of the turbine pump under high air pressure, detect leakage problems caused by air pressure changes in a timely manner, and at the same time test the stability of the pump body structure under high pressure, avoiding the impact of structural strength problems on service life. After the test, open the vent valve 105 and slowly discharge the gas from the sealed box 1 through the exhaust pipe 104 to restore the air pressure to normal, thus ending the test. High-pressure testing and vibration testing can be conducted separately or simultaneously, increasing the versatility of the test. When the turbine pump body 5 is only undergoing high-pressure testing, the drive cylinder 701 is activated. The telescopic end of the drive cylinder 701 pushes the support frame 702 upwards to rest against the bottom of the sealed box 1, supporting the sealed box 1 and distributing the support pressure of the multi-axial vibration test device 8. This prevents the high-pressure gas inside the test chamber from generating an outward expansion force on the chamber, indirectly increasing the load on the vibration components of the multi-axial vibration test device 8 and causing wear that affects its service life. During the vibration test, the telescopic end of the drive cylinder 701 drives the support frame 702 to retract, moving it away from the bottom of the sealed box 1, facilitating vibration testing of the turbine pump body 5. After the multi-axial vibration testing device 8 is started, its internal excitation components generate multi-dimensional vibration power according to preset parameters, which can simultaneously output reciprocating vibrations along the X, Y, and Z axes, accurately simulating the undulating and bumpy conditions in actual scenarios. Since the device is directly connected to the bottom of the sealed box 1, the vibration power is transmitted to the sealed box 1 through rigid contact, causing the entire sealed box 1 and the internal turbine pump body 5 to move synchronously with the vibration device in a multi-axial bumpy motion, thereby creating a bumpy environment within the sealed box 1 that conforms to actual working conditions, meeting the requirements for vibration reliability testing of the test pieces inside the box.

[0031] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A reliability testing device for a turbopump, comprising a sealed housing (1), a turbopump body (5), and an air compressor (6), characterized in that, The sealing box (1) is integrally connected to a workbench (101) at its inner bottom. The turbine pump body (5) is fixedly installed on the top of the workbench (101). An air inlet pipe (102) is connected through the back plate of the sealing box (1). The turbine pump body (5) is located on the back side of the sealing box (1). An air supply pipe (601) is fixedly connected to the outlet end of the turbine pump body (5). The other end of the air supply pipe (601) is fixedly connected to the air inlet pipe (102). Sealing sleeves (103) are integrally connected to both side plates of the sealing box (1). The input pipe and output pipe of the turbine pump body (5) are both fixedly connected through to several sealing sleeves (103). An exhaust pipe (104) is fixedly connected through to one side of the sealing box (1). A vent valve (105) is fixedly installed on the outer wall of the exhaust pipe (104). A pressure detector (4) is fixedly installed on the side of the sealing box (1) away from the exhaust pipe (104).

2. The turbine pump reliability testing device according to claim 1, characterized in that, The air pressure detector (4), exhaust pipe (104) and two sets of sealing sleeves (103) are all located outside the side plates on both sides of the sealing box (1). The turbine pump body (5) has a door (3) on one side. The top of the door (3) is rotatably connected to the top ear plate of the sealing box (1) through a rotating shaft.

3. The turbine pump reliability testing device according to claim 2, characterized in that, A viewing window (301) is fixedly installed in the middle of the box door (3). A sealing ring is integrally connected to the back side of the box door (3). One side of the bottom end of the sealing ring is attached to the outside of the workbench (101). All four sides of the sealing ring are tightly connected to the inner wall of the box opening of the sealed box (1).

4. The turbine pump reliability testing device according to claim 3, characterized in that, The sealing box (1) has hydraulic rods (2) connected to both sides of the outside by bolts. The telescopic ends of the two sets of hydraulic rods (2) are inclined downward and connected to the bottom sides of the box door (3) by bolts. The bottom of the sealing box (1) is provided with a multi-axial vibration test device (8) and a base (7).

5. The turbine pump reliability testing device according to claim 4, characterized in that, The multiaxial vibration test device (8) is fixedly connected to the top of the base (7), the top of the multiaxial vibration test device (8) is fixedly connected to the bottom of the sealing box (1), and a number of drive cylinders (701) are fixedly connected to the top of the base (7).

6. The turbine pump reliability testing device according to claim 5, characterized in that, Several drive cylinders (701) are distributed in the gaps of the multiaxial vibration test device (8). A support frame (702) is fixedly connected to the top of the telescopic end of the drive cylinder (701). The support frame (702) is pushed against the bottom of the sealing box (1) by the drive cylinder (701).

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