Electromagnetic pump performance testing device and testing method thereof

Abstract

The invention discloses an electromagnetic pump performance test device and a test method thereof, and belongs to the technical field of electromagnetic pump test design, the electromagnetic pump performance test device comprises an electromagnetic pump, the electromagnetic pump is arranged on a test bench, an iron core is arranged in an inner cavity of the electromagnetic pump, an annular pump groove is formed between the inner cavity of the electromagnetic pump and the iron core, and a winding coil is arranged on the electromagnetic pump and located on the outer side of the pump groove. A test tube axially arranged in the electromagnetic pump is arranged in the pump groove in a penetrating mode, a force measuring assembly is arranged at one end of the test tube, and a temperature measuring assembly is arranged outside the test tube and located in the electromagnetic pump. In the scheme, the winding coil is electrified to generate a magnetic field, the test tube simulates the actual axial force and temperature of liquid metal in the electromagnetic pump in the pump groove of the electromagnetic pump, the axial force of the test tube is measured through the force measurement assembly, and the temperature of the test tube is detected through the temperature measurement assembly. Therefore, the performance of the electromagnetic pump under different conditions is simulated, the test accuracy is improved, and the method has guiding significance for the design of the electromagnetic pump.

Description

Technical Field

[0001] This invention relates to a testing device, and more specifically, to an electromagnetic pump performance testing device and a testing method thereof. Background Technology

[0002] When a three-phase cylindrical induction electromagnetic pump is in operation, the magnetic field generated by the three-phase winding coils interacts with the induced electromagnetic field on the liquid metal, producing an axial thrust that propels the medium to flow. This design offers advantages such as high operational reliability and low vibration and noise. However, since the medium transported by the electromagnetic pump is liquid metal, verifying its performance often requires constructing a high-temperature medium test bench, leading to high testing costs and long testing cycles. Furthermore, the accuracy and reliability of instruments used for measuring high-temperature media are low, resulting in inaccurate measurement data. Therefore, to address these issues and quickly obtain electromagnetic pump performance data to verify the accuracy of design calculations, a novel electromagnetic pump performance testing device has been developed.

[0003] For example, Chinese Patent Publication No. CN118532318A, published on August 23, 2024, entitled "An Electromagnetic Pump Performance Testing System," discloses an electromagnetic pump performance testing device, including a frame, a platform, a positioning device, an oil supply device, a power supply, a testing module, and a control console. The frame has an internal testing space, and the positioning device is mounted on the platform. Two support platforms are mounted on the platform. The oil supply device includes two connectors, two pipes, two oil tanks, and a return oil pipe. Both ends of the return oil pipe are connected to the two oil tanks. The two connectors are movably mounted on the two support platforms. The power supply is connected to electricity, and the electromagnetic pump's wiring is detachably connected to the power supply. The testing module is mounted on the connectors. The control console is signal-connected to both the power supply and the testing module. This solution effectively reduces the operational difficulty of the preliminary preparation work for electromagnetic pump performance testing; however, its complex structure and lack of substantial change in the testing method still hinder electromagnetic pump performance testing. Summary of the Invention

[0004] This invention overcomes the problems of complex structure and high testing difficulty of existing electromagnetic pump performance testing devices and methods, and provides an electromagnetic pump performance testing device and its testing method. In this solution, the electromagnetic pump performance testing device has a simple overall structure and a simple testing method, and can improve the accuracy of electromagnetic pump performance testing.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: an electromagnetic pump performance testing device, comprising an electromagnetic pump, the electromagnetic pump being mounted on a test bench, an iron core being provided in the inner cavity of the electromagnetic pump, and an annular pump groove being formed between the inner cavity of the electromagnetic pump and the iron core, a winding coil being provided on the electromagnetic pump and located outside the pump groove, a test tube being axially arranged inside the electromagnetic pump passing through the pump groove, a force measuring component being provided at one end of the test tube, and a temperature measuring component being provided outside the test tube and located inside the electromagnetic pump. In this solution, by energizing the winding coil, a magnetic field is generated in the winding coil. The test tube in the pump groove of the electromagnetic pump simulates the axial force and temperature of the liquid metal inside an actual electromagnetic pump. The axial force of the test tube is measured by the force measuring component, and the temperature of the test tube is detected by the temperature measuring component, thereby simulating the performance of the electromagnetic pump under different conditions, improving the accuracy of the test, and providing guidance for the design of electromagnetic pumps.

[0006] Preferably, the test tube is provided with support seats at both ends. The test tube is arranged coaxially with the iron core and the inner cavity of the electromagnetic pump, and there is a gap between the test tube and the inner cavity of the iron core and the electromagnetic pump. The support seats are used to support the two ends of the test tube, so that the test tube, iron core and electromagnetic pump are on the same axis, while avoiding contact between the test tube and the iron core and electromagnetic pump as much as possible, thereby improving the accuracy of the test results.

[0007] Preferably, a connecting block is provided between the inner wall of the electromagnetic pump and the iron core, and the test tube has an opening slot along the axial direction corresponding to the connecting block, with one end of the opening slot extending to the end of the test tube. The connecting block inside the electromagnetic pump is used to connect the iron core and fix the iron core inside the electromagnetic pump, while the opening slot on the test tube can avoid the connecting block, and the connecting block can also limit the position of the test tube.

[0008] Preferably, the force measuring assembly includes a fixed base, on which a tensile sensor is arranged coaxially with the test tube and connected to the test tube. The axial force on the test tube is measured by the tensile sensor.

[0009] Preferably, the test bench is further provided with a safety baffle on the side away from the fixed base, corresponding to the position of the test tube. The safety baffle can play a protective role during the test, preventing the test tube from flying out due to excessive axial force, thus improving the safety of the test personnel.

[0010] Preferably, an adjustment assembly is provided between the support base and the test bench. The adjustment assembly can adjust the support base, thereby adjusting the height of the test tube in the vertical direction, ensuring the coaxiality of the test tube, the iron core, and the electromagnetic pump, thus improving the reliability of the test.

[0011] A test method for an electromagnetic pump performance testing device, implemented using the aforementioned electromagnetic pump performance testing device, includes the following steps: S1: Align the open slot on the test tube with the connecting block in the pump groove and insert the test tube into the pump groove; S2: Fix both ends of the test tube and adjust the coaxiality between the test tube and the electromagnetic pump; S3: Power on the electromagnetic pump and adjust different voltages, recording the temperature and pressure values ​​of the temperature measuring component and the pressure measuring component under different voltages.

[0012] Preferably, in step S2, when adjusting the coaxiality of the test tube and the electromagnetic pump, the inner surface of the test tube is kept at a distance from the iron core, and the outer surface is kept at a distance from the inner cavity of the electromagnetic pump.

[0013] Preferably, when arranging the test tube, one end of the open slot through the test tube faces the side of the safety baffle.

[0014] Preferably, the temperature measuring component outside the test tube and the tension sensor at the end of the test tube are connected to a secondary instrument for parameter detection.

[0015] Compared with the prior art, the beneficial effects of the present invention are: (1) The structure of this solution is simple and the testing method is simple. The axial force data of the electromagnetic pump is obtained through the test aluminum tube, which greatly reduces the test cost and shortens the construction period; (2) The force sensor is used to conduct the test at room temperature, which avoids the problems of low measurement accuracy and poor reliability of the high temperature pressure transmitter and improves the reliability of the data; (3) By changing the phase sequence of the electromagnetic pump and the thickness of the test aluminum tube, multiple sets of test data can be obtained, which can better verify the accuracy of the design. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the present invention.

[0017] Figure 2 for Figure 1 An enlarged diagram of A in the diagram.

[0018] Figure 3 for Figure 1 Enlarged diagram of B in the diagram.

[0019] Figure 4 This is a schematic diagram illustrating a specific implementation of the present invention.

[0020] In the figure: 1. Test bench, 2. Iron core, 3. Pump groove, 4. Winding coil, 5. Test tube, 6. Support base, 7. Connecting block, 8. Opening slot, 8.1. First end, 8.2. Second end, 9. Fixing base, 10. Tension sensor, 11. Safety baffle, 12. Adjustment component, 13. Electromagnetic pump base, 14. Bushing, 15. Tension rod. Detailed Implementation

[0021] The technical solution of the present invention will be further described in detail below through specific embodiments and in conjunction with the accompanying drawings.

[0022] Example 1: As Figures 1 to 3 The electromagnetic pump performance testing device shown includes a test bench 1, on which an electromagnetic pump and components for testing the electromagnetic pump are mounted. A winding coil 4 is wound on the electromagnetic pump, and an iron core 2 is located inside the electromagnetic pump. A pump groove 3 is formed between the inner cavity of the electromagnetic pump and the iron core 2. A test tube 5 for testing is placed in the pump groove 3 to simulate liquid metal. A force measuring component is set on the test bench 1 at the end of the test tube 5 to measure the axial force of the test tube 5, and a temperature measuring component is used to measure the temperature of the test tube 5. This simulates the temperature and axial force of liquid metal, thereby quickly obtaining the performance of the electromagnetic pump to verify the accuracy of the design calculations.

[0023] Specifically, the electromagnetic pump is fixedly arranged on the test bench 1. The bottom of the test bench 1 is equipped with supports and stiffening plates to ensure the overall stability and strength of the test bench. The electromagnetic pump is fixed to the test bench by electromagnetic pump bases 13. There are two electromagnetic pump bases 13, which are symmetrically arranged at both ends of the length of the electromagnetic pump. The bottom of the electromagnetic pump base 13 is provided with a connecting plate, which is fixedly connected to the upper surface of the test bench 1 by bolts. The upper part of the electromagnetic pump base 13 is provided with a fixing groove to accommodate and fix the electromagnetic pump. The electromagnetic pump is horizontally arranged in the fixing groove in the electromagnetic pump base 13 at both ends. The upper surface of the test bench 1 is horizontal, and the fixing grooves at the upper ends of the two electromagnetic pump bases 13 also need to be flush to ensure the horizontal arrangement of the electromagnetic pump.

[0024] A cylindrical cavity is provided inside the electromagnetic pump. An iron core 2 is arranged laterally within this cavity, meaning it is axially positioned within the pump's interior. The radial dimension of the iron core 2 is smaller than the radial dimension of the pump's interior, thus forming a pump groove 3, which is an annular cavity. The length of the iron core 2 is the same as the axial length of the pump's interior, and they are coaxially arranged. Therefore, the distance from the outer surface of the iron core 2 to the surface of the pump's interior is the same. A winding coil 4 is also provided on the electromagnetic pump, positioned around the pump groove 3. The iron core 2 is located inside the winding coil 4, which is also axially aligned with the pump. When energized, the winding coil 4 generates a magnetic field inside the pump, which is amplified by the iron core 2.

[0025] A test tube 5 is also provided inside the pump groove 3 of the electromagnetic pump. The test tube 5 is a cylindrical hollow tube structure. The radial dimension of the test tube 5 is adapted to the radial dimension of the pump groove 3. In this embodiment, the test tube 5 is made of aluminum alloy tube. The axial length of the test tube 5 needs to be greater than the axial length of the electromagnetic pump. When the test tube 5 is inserted and arranged on the electromagnetic pump, both ends of the test tube 5 are located outside the electromagnetic pump. That is, the test tube 5 axially penetrates the electromagnetic pump through the pump groove 3.

[0026] A connecting block 7 is also provided between the inner cavity of the electromagnetic pump and the iron core 2. The connecting block 7 connects the iron core 2 and the inner cavity wall of the electromagnetic pump together, thereby fixing the iron core 2 inside the electromagnetic pump. In actual arrangement, three rows of connecting blocks 7 are arranged in the axial direction of the electromagnetic pump. Each row of connecting blocks 7 is evenly arranged in the axial direction of the inner cavity of the electromagnetic pump, and the three rows of connecting blocks 7 are evenly arranged on the circumference of the inner cavity of the electromagnetic pump. This ensures the stability and connection strength of the iron core 2 inside the electromagnetic pump.

[0027] When the test tube 5 is inserted into the inner cavity of the electromagnetic pump, the test tube 5 needs to be designed with openings 8 to avoid the connecting blocks 7. Specifically, the test tube 5 is a hollow tube structure with three openings 8. One end of the opening 8 extends to the end of the test tube 5, and the other end is located on the side wall of the test tube 5. That is to say, the openings 8 are elongated grooves on the test tube 5, and the openings 8 do not completely penetrate the axial direction of the test tube 5, only one end penetrates the end of the test tube 5. The positions of the three openings 8 on the test tube 5 correspond to the positions of the three rows of connecting blocks 7 in the inner cavity of the electromagnetic pump, and the width of the openings 8 needs to be greater than the radial dimension of the connecting blocks 7 to avoid direct contact between the openings 8 on the test tube 5 and the connecting blocks 7 in the circumferential direction, which would affect the test results of the force measuring component. Furthermore, since one end of the opening groove 8 penetrates the end of the test tube 5 (defined as the first end 8.1), and the other end of the opening groove 8 is located on the surface of the test tube 5 (defined as the second end 8.2), and the length of the opening groove 8 needs to be greater than the axial length of the electromagnetic pump. When the test tube 5 is inserted into the electromagnetic pump, the side with the first end 8.1 is inserted into the electromagnetic pump. After the test tube 5 is arranged in the pump groove 3 inside the electromagnetic pump, the first end 8.1 and the second end 8.2 of the opening groove 8 are both located outside the electromagnetic pump. In other words, the second end 8.2 of the opening groove 8 should not contact the connecting block 7 inside the electromagnetic pump to avoid affecting the axial force detection of the test tube 5 by the force measuring component due to the obstruction of the connecting block 7.

[0028] Furthermore, both ends of the test tube 5 protrude outside the electromagnetic pump. Support seats 6 are also arranged at both ends of the test tube 5 on the test bench 1. The support seats 6 are plate-frame structures, with mounting holes on their tops that match the radial dimensions of the test tube 5. Both ends of the test tube 5 are respectively installed in the mounting holes on the tops of the support seats 6 on both sides. Specifically, to ensure the coaxiality and installation stability of the test tube 5, a bushing 14 structure is also provided between the mounting holes and the test tube 5. The bushing 14 ensures the positional accuracy of the test tube 5 and reduces friction between the test tube 5 and the mounting holes. The support effect of the support seats 6 on both sides ensures the coaxiality of the test tube 5 with the iron core 2 and the electromagnetic pump, avoiding direct contact between the test tube 5 and the inner wall of the electromagnetic pump during testing, which could lead to friction (including static friction) and affect the results of the force measuring component.

[0029] A force measuring assembly is provided on the second end 8.2 of the test tube 5 near the opening slot 8 and on the test bench 1. The force measuring assembly includes a fixed seat 9, which is a plate frame structure like the support seat 6. The fixed seat 9 is arranged adjacent to the support seat 6 and is located on the side of the support seat 6 away from the electromagnetic pump. The bottom of the fixed seat 9 is fixedly connected to the upper surface of the test bench 1. A tension sensor 10 is arranged on the top of the fixed seat 9. A tension rod 15 is connected to the tension sensor 10. The tension sensor 10 is fixed to the upper side of the fixed seat 9 by screws and other connecting parts. One end of the tension rod 15 is connected to the tension sensor 10, and the other end of the tension rod 15 is connected to the end of the test tube 5 through a connecting plate. In order to ensure the detection effect of the tension sensor 10, the tension rod 15 and the test tube 5 also need to be arranged coaxially.

[0030] A temperature measuring component (not shown in the figure) is also installed inside the electromagnetic pump. The temperature measuring component is a temperature sensor and is arranged on the outer surface of the test tube 5. In order to improve the temperature measuring effect of the temperature measuring component, the temperature measuring component is arranged in the middle of the electromagnetic pump.

[0031] Example 2: Figure 1 , Figure 2 and Figure 3 The electromagnetic pump performance testing device shown includes a test bench 1, on which an electromagnetic pump and components for testing the electromagnetic pump are mounted. A winding coil 4 is wound on the electromagnetic pump, and an iron core 2 is located inside the electromagnetic pump. A pump groove 3 is formed between the inner cavity of the electromagnetic pump and the iron core 2. A test tube 5 for testing is placed in the pump groove 3 to simulate liquid metal. A force measuring component is set on the test bench 1 at the end of the test tube 5 to measure the axial force of the test tube 5, and a temperature measuring component is used to measure the temperature of the test tube 5. This simulates the temperature and axial force of liquid metal, thereby quickly obtaining the performance of the electromagnetic pump to verify the accuracy of the design calculations.

[0032] Specifically, the electromagnetic pump is fixedly arranged on the test bench 1. The bottom of the test bench 1 is equipped with supports and stiffening plates to ensure the overall stability and strength of the test bench. The electromagnetic pump is fixed to the test bench by electromagnetic pump bases 13. There are two electromagnetic pump bases 13, which are symmetrically arranged at both ends of the length of the electromagnetic pump. The bottom of the electromagnetic pump base 13 is provided with a connecting plate, which is fixedly connected to the upper surface of the test bench 1 by bolts. The upper part of the electromagnetic pump base 13 is provided with a fixing groove to accommodate and fix the electromagnetic pump. The electromagnetic pump is horizontally arranged in the fixing groove in the electromagnetic pump base 13 at both ends. The upper surface of the test bench 1 is horizontal, and the fixing grooves at the upper ends of the two electromagnetic pump bases 13 also need to be flush to ensure the horizontal arrangement of the electromagnetic pump.

[0033] A cylindrical cavity is provided inside the electromagnetic pump. An iron core 2 is arranged laterally within this cavity, meaning it is axially positioned within the pump's interior. The radial dimension of the iron core 2 is smaller than the radial dimension of the pump's interior, thus forming a pump groove 3, which is an annular cavity. The length of the iron core 2 is the same as the axial length of the pump's interior, and they are coaxially arranged. Therefore, the distance from the outer surface of the iron core 2 to the surface of the pump's interior is the same. A winding coil 4 is also provided on the electromagnetic pump, positioned around the pump groove 3. The iron core 2 is located inside the winding coil 4, which is also axially aligned with the pump. When energized, the winding coil 4 generates a magnetic field inside the pump, which is amplified by the iron core 2.

[0034] A test tube 5 is also provided inside the pump groove 3 of the electromagnetic pump. The test tube 5 is a cylindrical hollow tube structure. The radial dimension of the test tube 5 is adapted to the radial dimension of the pump groove 3. In this embodiment, the test tube 5 is made of aluminum alloy tube. The axial length of the test tube 5 needs to be greater than the axial length of the electromagnetic pump. When the test tube 5 is inserted and arranged on the electromagnetic pump, both ends of the test tube 5 are located outside the electromagnetic pump. That is, the test tube 5 axially penetrates the electromagnetic pump through the pump groove 3.

[0035] A connecting block 7 is also provided between the inner cavity of the electromagnetic pump and the iron core 2. The connecting block 7 connects the iron core 2 and the inner cavity wall of the electromagnetic pump together, thereby fixing the iron core 2 inside the electromagnetic pump. In actual arrangement, three rows of connecting blocks 7 are arranged in the axial direction of the electromagnetic pump. Each row of connecting blocks 7 is evenly arranged in the axial direction of the inner cavity of the electromagnetic pump, and the three rows of connecting blocks 7 are evenly arranged on the circumference of the inner cavity of the electromagnetic pump. This ensures the stability and connection strength of the iron core 2 inside the electromagnetic pump.

[0036] When the test tube 5 is inserted into the inner cavity of the electromagnetic pump, the test tube 5 needs to be designed with openings 8 to avoid the connecting blocks 7. Specifically, the test tube 5 is a hollow tube structure with three openings 8. One end of the opening 8 extends to the end of the test tube 5, and the other end is located on the side wall of the test tube 5. That is to say, the openings 8 are elongated grooves on the test tube 5, and the openings 8 do not completely penetrate the axial direction of the test tube 5, only one end penetrates the end of the test tube 5. The positions of the three openings 8 on the test tube 5 correspond to the positions of the three rows of connecting blocks 7 in the inner cavity of the electromagnetic pump, and the width of the openings 8 needs to be greater than the radial dimension of the connecting blocks 7 to avoid direct contact between the openings 8 on the test tube 5 and the connecting blocks 7 in the circumferential direction, which would affect the test results of the force measuring component. Furthermore, since one end of the opening groove 8 penetrates the end of the test tube 5 (defined as the first end 8.1), and the other end of the opening groove 8 is located on the surface of the test tube 5 (defined as the second end 8.2), and the length of the opening groove 8 needs to be greater than the axial length of the electromagnetic pump. When the test tube 5 is inserted into the electromagnetic pump, the side with the first end 8.1 is inserted into the electromagnetic pump. After the test tube 5 is arranged in the pump groove 3 inside the electromagnetic pump, the first end 8.1 and the second end 8.2 of the opening groove 8 are both located outside the electromagnetic pump. In other words, the second end 8.2 of the opening groove 8 should not contact the connecting block 7 inside the electromagnetic pump to avoid affecting the axial force detection of the test tube 5 by the force measuring component due to the obstruction of the connecting block 7.

[0037] Furthermore, both ends of the test tube 5 protrude outside the electromagnetic pump. Support seats 6 are also arranged at both ends of the test tube 5 on the test bench 1. The support seats 6 are plate-frame structures, with mounting holes on their tops that match the radial dimensions of the test tube 5. Both ends of the test tube 5 are respectively installed in the mounting holes on the tops of the support seats 6 on both sides. Specifically, to ensure the coaxiality and installation stability of the test tube 5, a bushing 14 structure is also provided between the mounting holes and the test tube 5. The bushing 14 ensures the positional accuracy of the test tube 5 and reduces friction between the test tube 5 and the mounting holes. The support effect of the support seats 6 on both sides ensures the coaxiality of the test tube 5 with the iron core 2 and the electromagnetic pump, avoiding direct contact between the test tube 5 and the inner wall of the electromagnetic pump during testing, which could lead to friction (including static friction) and affect the results of the force measuring component. Furthermore, an adjustment component 12 is provided at the bottom of the support base 6. The adjustment component 12 includes an adjustment screw and an adjustment shim. By adjusting the screw, the height position of the support base 6 can be finely adjusted, thereby adjusting the horizontal position of the test tube 5. It can also adjust the coaxiality between the test tube 5 and the electromagnetic pump and the iron core 2, thereby improving the accuracy of the test results.

[0038] A force measuring assembly is provided on the second end 8.2 of the test tube 5 near the opening slot 8 and on the test bench 1. The force measuring assembly includes a fixed seat 9, which is a plate frame structure like the support seat 6. The fixed seat 9 is arranged adjacent to the support seat 6 and is located on the side of the support seat 6 away from the electromagnetic pump. The bottom of the fixed seat 9 is fixedly connected to the upper surface of the test bench 1. A tension sensor 10 is arranged on the top of the fixed seat 9. A tension rod 15 is connected to the tension sensor 10. The tension sensor 10 is fixed to the upper side of the fixed seat 9 by screws and other connecting parts. One end of the tension rod 15 is connected to the tension sensor 10, and the other end of the tension rod 15 is connected to the end of the test tube 5 through a connecting plate. In order to ensure the detection effect of the tension sensor 10, the tension rod 15 and the test tube 5 also need to be arranged coaxially.

[0039] A temperature measuring component (not shown in the figure) is also installed inside the electromagnetic pump. The temperature measuring component is a temperature sensor and is arranged on the outer surface of the test tube 5. In order to improve the temperature measuring effect of the temperature measuring component, the temperature measuring component is arranged in the middle of the electromagnetic pump.

[0040] A safety baffle 11 is provided on the test bench 1 and on the side near the first end 8.1 of the opening slot 8. The safety baffle 11 is a plate frame structure, and the top position of the safety baffle 11 corresponds to the height position of the test tube 5. The area of ​​the top of the safety baffle 11 is larger than the circular cross-sectional area of ​​the test tube 5. The safety baffle 11 can block or buffer the test tube 5 when it is subjected to a large axial force, so as to prevent the test tube from flying out and accidentally injuring the test personnel under a large axial force.

[0041] Example 3: As Figure 4 The test method for an electromagnetic pump performance testing device shown is implemented using one of the electromagnetic pump performance testing devices in Example 1 or Example 2. Specifically, it includes the following steps.

[0042] First, the electromagnetic pump for the test is fixedly installed on the electromagnetic pump base 13 on the test bench 1, and the axis of the electromagnetic pump is in the horizontal direction, and the pump groove 3 in the inner cavity of the electromagnetic pump is aligned with the mounting holes on the two side support seats 6. If the pump groove in the electromagnetic pump cannot be aligned well with the mounting holes, the position of the mounting holes can be finely adjusted by adjusting component 12 to align the mounting holes with the position of the pump groove 3.

[0043] Next, insert the test tube 5 into the mounting hole on the side away from the safety baffle 11 from the side with the first end 8.1 of the opening groove 8, and then insert it into the pump inlet groove 3, while aligning the opening groove 8 with the connecting block 7 in the pump groove 3, so as to avoid the test tube 5 from contacting the inner cavity wall and the iron core 2 of the electromagnetic pump; then insert the test tube 5 out to the position corresponding to the safety baffle 11, while avoiding the test tube 5 from directly contacting the safety baffle 11.

[0044] Then, the force measuring components are arranged on the test bench 1, and the tension sensor 10 and the tension rod 15 are connected to the end of the test tube 5 to ensure that the tension rod 15 is arranged coaxially with the test tube 1 and to ensure the detection effect of the tension sensor 10.

[0045] Next, connect the alternating current (AC) power supply to the electromagnetic pump, and connect the secondary instruments to the temperature measuring component and the tension sensor 10. Turn on the power, causing the winding coil 4 on the electromagnetic pump to generate a magnetic field. This magnetic field interacts with the induced electromagnetic field on the test tube 5, generating an axial force on the test tube 5. To ensure more accurate measurement results, different combinations of voltage and frequency are used to obtain data on frequency, voltage, current, power, axial force, and temperature of the test tube 5. The resistivity parameter of the test tube 5 can be obtained through its temperature, which also prevents the test tube 5 from melting due to excessive temperature during testing. In practical design, the resistivity of the liquid metal at the actual temperature can be substituted. In other words, testing in a high-temperature environment can be avoided during the experimental stage.

[0046] Finally, by changing the phase sequence of the electromagnetic pump and the thickness of the test aluminum tube, multiple sets of test data can be obtained, which can better verify the accuracy of the design.

Claims

1. An electromagnetic pump performance testing device, comprising an electromagnetic pump, characterized in that, The electromagnetic pump is mounted on a test bench. The inner cavity of the electromagnetic pump is provided with an iron core, and an annular pump groove is formed between the inner cavity of the electromagnetic pump and the iron core. A winding coil is provided on the electromagnetic pump and located outside the pump groove. A test tube axially arranged inside the electromagnetic pump is inserted through the pump groove. A force measuring component is provided at one end of the test tube, and a temperature measuring component is provided outside the test tube and located inside the electromagnetic pump.

2. The electromagnetic pump performance testing device according to claim 1, characterized in that, The test tube is provided with support seats at both ends. The test tube is arranged coaxially with the iron core and the inner cavity of the electromagnetic pump. The test tube is spaced apart from the iron core and the inner cavity of the electromagnetic pump.

3. The electromagnetic pump performance testing device according to claim 2, characterized in that, A connecting block is provided between the inner wall of the electromagnetic pump and the iron core. The test tube is provided with an opening groove corresponding to the connecting block along the axial direction, and one end of the opening groove extends to the end of the test tube.

4. An electromagnetic pump performance testing device according to any one of claims 1 to 3, characterized in that, The force measuring component includes a fixed base, on which a tensile sensor is arranged coaxially with the test tube, and the tensile sensor is connected to the test tube.

5. The electromagnetic pump performance testing device according to claim 4, characterized in that, The test bench is also provided with a safety baffle on the side away from the fixed seat, with the position corresponding to the test tube.

6. The electromagnetic pump performance testing device according to claim 2, characterized in that, An adjustment assembly is provided between the support base and the test bench.

7. A test method for an electromagnetic pump performance testing device, characterized in that, The electromagnetic pump performance testing device according to any one of claims 1 to 6 is used, and includes the following steps: S1: Align the open slot on the test tube with the connecting block in the pump groove and insert the test tube into the pump groove; S2: Then fix both ends of the test tube and adjust the coaxiality between the test tube and the electromagnetic pump; S3: Power on the electromagnetic pump and adjust the voltage to different levels. Record the temperature and pressure values ​​of the temperature and pressure measuring components at different voltage levels.

8. The testing method of the electromagnetic pump performance testing device according to claim 7, characterized in that, In step S2, when adjusting the coaxiality of the test tube and the electromagnetic pump, the inner surface of the test tube is kept at a distance from the iron core, and the outer surface is kept at a distance from the inner cavity of the electromagnetic pump.

9. The testing method of the electromagnetic pump performance testing device according to claim 7, characterized in that, When arranging the test tubes, the end of the open slot that passes through the test tube should face the side of the safety baffle.

10. The testing method of the electromagnetic pump performance testing device according to claim 7, characterized in that, The temperature measuring components on the outside of the test tube and the tension sensor at the end of the test tube are connected to a secondary instrument for parameter detection.

Images