Low-temperature pulsation sensor performance high-low temperature cycle test board
By designing a high and low temperature cycle test bench for low temperature pulsation sensor performance, the isolation plate and transmission structure are used to achieve rapid high and low temperature conversion, and combined with the linkage mechanism to simulate a rotation or shaking environment, the problems of long test cycles, high cost and low test accuracy in the existing technology are solved, and efficient and accurate test results are achieved.
Patent Information
- Application Number
- CN202510469462.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-15
- Publication Date
- 2025-06-27
AI Technical Summary
The existing low-temperature pulsation sensor testing technology has a long test cycle and high time cost under high and low temperature cycle conditions, and cannot simulate the rotation or shaking environment during actual work, resulting in a reduced test accuracy.
A low-temperature pulsation sensor performance high- and low-temperature cycle test bench was designed, and the inside of the test frame was separated into two spaces by an isolation plate. The sensor was quickly converted into high- and low-temperature in the same space through a transmission structure, and combined with the linkage mechanism to simulate a rotation or shaking environment.
It significantly shortens the test cycle, reduces time and equipment loss costs, improves the accuracy of the test, and can truly simulate the performance of the sensor in complex operating conditions.
Smart Images
Figure CN120214460A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of sensor testing, and specifically provides a high and low temperature cycling test bench for the performance of a cryogenic pulsation sensor. Background Art
[0002] Cryogenic pulsation sensors are widely used in many fields such as aerospace, cryogenic refrigeration equipment, and deep-sea exploration. These application scenarios are often accompanied by drastic temperature changes. Therefore, extremely high requirements are imposed on the performance stability of cryogenic pulsation sensors under high and low temperature cycling conditions.
[0003] During the detection of cryogenic pulsation sensors by equipment, in order to achieve thermal equilibrium of the sensors after high and low temperature conversion, a certain waiting time still needs to be reserved to ensure the accuracy of test data. This processing method directly lengthens the entire test cycle. Especially when multiple high and low temperature cycling tests are required, the accumulated waiting time will increase significantly, greatly increasing the time cost of the test. In addition, frequent high and low temperature conversion operations require the refrigeration and heating equipment to run alternately without interruption. The frequent start and stop of the equipment and long-term high-load operation not only accelerate the wear of the equipment but also cause a sharp increase in the energy consumption of the test equipment, further increasing the test cost. Moreover, during the test process, it is impossible to simulate the environment of rotation or shaking in actual work, and it is impossible to truly evaluate the performance stability, reliability, and anti-interference ability of the sensor under complex working conditions, reducing the accuracy of the test. Summary of the Invention
[0004] The purpose of the present invention is to provide a high and low temperature cycling test bench for the performance of a cryogenic pulsation sensor to solve the problems raised in the above background art.
[0005] To achieve the above purpose, the present invention provides the following technical solution: A high and low temperature cycling test bench for the performance of a cryogenic pulsation sensor, including: a test mechanism, and the test mechanism includes a test frame and an adjustment disk; A rotating block is fixedly connected to the outer surface wall of the adjusting disk. A set of tooth grooves are formed at the bottom of the adjusting disk. A bottom mounting frame is fixedly connected to the bottom of the test frame. A bottom motor is fixedly installed at the bottom of the bottom mounting frame. A regulating gear is fixedly connected to the rotating end of the bottom motor, and the outer surface wall of the regulating gear is meshed and transmitted inside a set of tooth grooves. A third bevel gear is fixedly installed on one side of the outer wall of the regulating gear. A U-shaped frame is fixedly connected to one side of the outer wall of the test frame. A set of bearing bodies are fixedly inserted inside the U-shaped frame. An adjusting rod is fixedly connected between the inner surface walls of the set of bearing bodies. Fourth bevel gears are fixedly connected to the top and bottom of the set of adjusting rods. One of the inner surface walls of the two fourth bevel gears is meshed and transmitted with the outer surface wall of the fifth bevel gear, and the other inner surface wall of the two fourth bevel gears is meshed and transmitted with the outer surface wall of the third bevel gear. An electric clamping assembly is fixedly installed on the top of the adjusting disk.
[0006] Preferably, a rotating groove is formed inside the test frame, and the outer surface wall of the rotating block is rotatably connected inside the rotating groove. A set of damping hinges are fixedly installed on one side of the outer wall of the test frame. A sealing cover is fixedly connected between the rotating ends of the set of damping hinges. A set of mounting holes are preset inside the test frame. The inner surface walls of the set of mounting holes are all rotatably connected with driving rods. An isolation plate is fixedly connected between the opposite sides of the set of driving rods, and the top of the adjusting disk is in contact and sealed with the bottom of the isolation plate. A fifth bevel gear is fixedly connected to one side of the outer wall of one of the set of driving rods.
[0007] Preferably, a linkage mechanism is fixedly connected to the outer surface wall of the testing mechanism; The linkage mechanism includes a linkage frame. A linkage seat is fixedly installed at the middle position of the inner surface wall of the linkage frame. A threaded seat is fixedly installed on one side of the outer wall of the linkage seat. A sliding seat is fixedly installed on the outer surface wall of the linkage seat.
[0008] Preferably, a transmission box is fixedly installed on one side of the outer wall of the linkage frame. An internal motor is fixedly connected to the input end of the transmission box. A transmission rod is fixedly connected to the output end of the transmission box. A first bevel gear is fixedly connected to one side of the outer wall of the transmission rod.
[0009] Preferably, the outer surface wall of the first bevel gear is meshed and transmitted with a second bevel gear. Two gear boxes are fixedly installed on one side of the outer wall of the linkage frame. Fixed rods are fixedly connected to one side of the outer surface walls of the two second bevel gears, and the outer surface walls of the two fixed rods are all rotatably connected inside the linkage frame.
[0010] Preferably, a gear box is fixedly installed on one side of the outer wall of the linkage frame, and the outer surface walls of the transmission rod and one of the two fixed rods are rotatably connected inside the gear box. The outer wall between the one sides of the two fixed rods is fixedly connected to the outer surface wall of the test frame.
[0011] Preferably, a main body mechanism is arranged outside the linkage mechanism; The main body mechanism includes a main body box, a set of rollers are fixedly inserted at the bottom of the main body box, and a set of electric support plates are fixedly inserted at the bottom of the main body box.
[0012] Preferably, a transparent glass cover is fixedly installed on the top of the main body box, a rear mounting frame is fixedly installed on one side of the outer wall of the main body box, an external motor is fixedly installed on one side of the outer wall of the rear mounting frame, and a transmission gear A is fixedly connected to the rotating end of the external motor.
[0013] Preferably, a fixing frame is fixedly installed on the top of the main body box, bearing seats are fixedly connected to one side of the outer wall of the fixing frame and the top of the rear mounting frame respectively, a threaded rod is fixedly connected between the inner surfaces of the two bearing seats, and a transmission gear B is fixedly installed on the outer surface of the threaded rod. A transmission belt is meshed and transmitted between the outer surfaces of the transmission gear B and the transmission gear A.
[0014] Preferably, a sliding strip plate is fixedly connected between the bottom of the fixing frame and the top of the main body box, and the inside of the sliding seat is slidably embedded between the outer surfaces of the sliding strip plate. A refrigeration component is fixedly connected to one side of the outer wall of the main body box, and a heating component is fixedly connected to the bottom of the main body box.
[0015] Compared with the prior art, the beneficial effects of the present invention are: 1. In the present invention, the inside of the test frame is divided into two spaces by a partition board for refrigeration and heat treatment respectively. After the high-temperature environment test is completed, the bottom motor drives the adjustment gear, and with a series of transmission structures, it can quickly drive the adjustment disc and the sensor to rotate 180 degrees, so that the sensor is transferred from the high-temperature space to the low-temperature space, enabling the sensor to achieve high and low temperature conversion and reach thermal equilibrium in the same space, greatly shortening the test cycle. In multiple high and low temperature cycle tests, the time cost is significantly reduced, the equipment loss and energy consumption are reduced, the cost is saved, the frequent alternating operation of the refrigeration and heating equipment in the same space is avoided, the frequent start and stop of the equipment and the long-time high-load operation are reduced, and the energy consumption is also reduced, thereby saving the test cost.
[0016] 2. In the present invention, first, a pulsating signal simulation system is set on the test bench, and various complex pulsating working conditions in actual work can be simulated by setting different signal frequency and amplitude parameters to detect the response ability of the sensor to pulsating signals with different frequencies and amplitudes, making the test results more in line with the actual application scenario. On the other hand, the built-in motor in the linkage mechanism drives the transmission rod to rotate, and through bevel gear transmission, the fixed rod rotates, thereby driving the overall test mechanism to rotate, simulating the rotation or shaking environment experienced by the pulsating sensor during high and low temperature tests, comprehensively simulating the real working conditions, and improving the test accuracy.
[0017] 3. In the present invention, rollers are provided at the bottom of the device to facilitate the overall movement of the device. Moreover, the electric support plate can adjust the height of the device according to actual needs, enhancing the stability of the device placement. The adjustment structure composed of an external motor, transmission gears, transmission belts, threaded rods, etc. can achieve the up-and-down position adjustment of the linkage mechanism inside the main body box, facilitating the flexible adjustment of the test bench according to different test requirements and enhancing the practicability of the device. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 is the three-dimensional front view structure diagram of a high and low temperature cycle test bench for the performance of a low temperature pulsation sensor according to the present invention; Figure 2 is the unfolded three-dimensional diagram of a high and low temperature cycle test bench for the performance of a low temperature pulsation sensor according to the present invention; Figure 3 is the three-dimensional diagram of the main body mechanism of a high and low temperature cycle test bench for the performance of a low temperature pulsation sensor according to the present invention; Figure 4 is the three-dimensional test diagram of the main body mechanism of a high and low temperature cycle test bench for the performance of a low temperature pulsation sensor according to the present invention; Figure 5 is the partial three-dimensional diagram of the main body mechanism of a high and low temperature cycle test bench for the performance of a low temperature pulsation sensor according to the present invention; Figure 6 is a high and low temperature cycle test bench for the performance of a low temperature pulsation sensor according to the present invention Figure 5 in which the enlarged view of Structure A; Figure 7 is the sectional three-dimensional split diagram of the test mechanism of a high and low temperature cycle test bench for the performance of a low temperature pulsation sensor according to the present invention; Figure 8 is a high and low temperature cycle test bench for the performance of a low temperature pulsation sensor according to the present invention Figure 7 in which the enlarged view of Structure B; Figure 9 is the bottom three-dimensional split diagram of the test mechanism of a high and low temperature cycle test bench for the performance of a low temperature pulsation sensor according to the present invention.
[0019] In the figure: 1. Main body mechanism; 11. Main body box; 111. Roller; 112. Electric support plate; 12. Transparent glass cover; 13. Rear mounting bracket; 14. External motor; 141. Driving gear A; 142. Transmission belt; 143. Driving gear B; 15. Fixed bracket; 151. Bearing seat; 16. Threaded rod; 17. Slide bar plate; 18. Refrigeration component; 19. Heating component; 2. Linkage mechanism; 21. Linkage frame; 22. Linkage seat; 221. Threaded seat; 23. Slide seat; 24. Transmission box; 241. Built-in motor; 25. Transmission rod; 251. First bevel gear; 252. Second bevel gear; 253. Gear box; 26. Fixed rod; 3. Testing mechanism; 31. Testing frame; 311. Rotation groove; 312. Damping hinge; 313. Mounting hole; 32. Sealing cover; 33. Driving rod; 331. Isolation plate; 332. Fifth bevel gear; 34. Adjusting disk; 341. Rotating block; 342. Tooth groove; 35. Bottom mounting bracket; 351. Bottom motor; 36. Adjusting gear; 361. Third bevel gear; 37. U-shaped frame; 371. Bearing body; 372. Adjusting rod; 38. Fourth bevel gear; 39. Electric clamping component. Detailed implementation mode
[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention. Embodiment 1, referring to Figure 1 - Figure 9 As shown in the figure: The present invention provides a high and low temperature cycle test bench for the performance of a low temperature pulsating sensor, including: a testing mechanism 3, and the testing mechanism 3 includes a testing frame 31 and an adjusting disk 34; The outer wall of the adjustment disc 34 is fixedly connected with a rotating block 341. A set of tooth grooves 342 are formed at the bottom of the adjustment disc 34. The bottom of the test frame 31 is fixedly connected with a bottom mounting frame 35. A bottom motor 351 is fixedly installed at the bottom of the bottom mounting frame 35. The rotating end of the bottom motor 351 is fixedly connected with an adjustment gear 36. The outer wall of the adjustment gear 36 is meshed and driven inside a set of tooth grooves 342. A third bevel gear 361 is fixedly installed on one side of the outer wall of the adjustment gear 36. A U-shaped frame 37 is fixedly connected to one side of the outer wall of the test frame 31. A set of bearing bodies 371 are fixedly inserted inside the U-shaped frame 37. An adjustment rod 372 is fixedly connected between the inner walls of the set of bearing bodies 371. Fourth bevel gears 38 are fixedly connected to the top and bottom of the set of adjustment rods 372. The outer wall of one of the two fourth bevel gears 38 is meshed and driven with the outer wall of the fifth bevel gear 332. The outer wall of the other of the two fourth bevel gears 38 is meshed and driven with the outer wall of the third bevel gear 361. An electric clamping assembly 39 is fixedly installed on the top of the adjustment disc 34. A rotating groove 311 is formed inside the test frame 31. The outer wall of the rotating block 341 is rotatably connected inside the rotating groove 311. A set of damping hinges 312 are fixedly installed on one side of the outer wall of the test frame 31. A sealing cover 32 is fixedly connected between the rotating ends of the set of damping hinges 312. A set of mounting holes 313 are preset inside the test frame 31. Drive rods 33 are rotatably connected to the inner walls of the set of mounting holes 313. An isolation plate 331 is fixedly connected between the opposite sides of the set of drive rods 33. The top of the adjustment disc 34 is in contact and sealed with the bottom of the isolation plate 331. A fifth bevel gear 332 is fixedly connected to one side of the outer wall of one of the set of drive rods 33.
[0021] In this embodiment, first, before the equipment conducts detection, it is necessary to simulate the test environment. The isolation plate 331 is used to isolate the inside of the test frame 31 into two spaces. During this process, the refrigerator inside the refrigeration component 18 operates. Through the compression and expansion processes of the gas, heat transfer is achieved. The temperature of one of the two spaces can be reduced to the low temperature range of -100°C to -20°C. The cold head of the refrigerator is connected to the inside of one of the two spaces, and the heat inside the space is taken away through conduction to reduce the temperature. During the heating process, in the heating component 19, the electric heating wires are evenly arranged inside the other of the two spaces. By energizing the electric heating wires, they generate heat, and the heat is transferred to the air in the forms of radiation, conduction, and convection, thereby increasing the temperature. Thus, heating and refrigeration treatments are performed on the two spaces. Moreover, the test frame 31 and the isolation plate 331 adopt a double-layer heat insulation structure (the inner layer is made of stainless steel, and the outer layer is made of high-strength heat insulation material), providing a stable test space for the high and low temperature tests of the sensors, and avoiding the problem of mutual penetration of the high and low temperatures of the two spaces during the test process. Subsequently, the low-temperature pulsation sensor to be detected is placed at the clamping port of the electric clamping assembly 39 by the robotic arm. Subsequently, the stability of the pulsation sensor itself is maintained, and during this process, the sealing cover 32 at the top maintains the sealing property with the test frame 31 itself. Subsequently, the pulsation sensor is tested. The signal generator in the pulsation signal simulation system generates a low-frequency electrical signal. After being amplified by the power amplifier, this signal drives the pulsation actuator. The pulsation actuator converts the electrical signal into the corresponding pulsating physical quantity and acts on the low-temperature pulsation sensor installed in the test frame 31. By setting different signal frequency and amplitude parameters, various complex pulsation working conditions in actual operation are simulated to detect the response ability of the sensor to pulsation signals with different frequencies and amplitudes, and the performance of the pulsation sensor is detected. When the test of the pulsation sensor is completed while maintaining it in a high-temperature environment, a subsequent test process in a low-temperature environment is required. At this time, when the bottom motor 351 at the bottom is in the powered-on state, an electromagnetic phenomenon is generated inside it, and it drives the adjusting gear 36 fixedly installed on one side of the outer wall to rotate. And it meshes and drives inside the tooth groove 342. This kind of transmission is rotationally matched by the rotating block 341 inside the rotating groove 311, so as to keep the adjusting disk 34 and the pulsation sensor clamped on its top rotate by 180 degrees. And under this kind of rotation, the third bevel gear 361 fixedly installed on one side of the outer wall meshes and drives with the outer wall of one of the two fourth bevel gears 38. With the cooperation of the adjusting rod 372 rotating inside the U-shaped frame 37 through the bearing body 371, and driven by the meshing of the outer surface of the other of the two fourth bevel gears 38 with the fifth bevel gear 332, the fifth bevel gear 332 can be kept driving the driving rod 33 to rotate inside the mounting hole 313, so as to drive the partition plate 331 inside it to rotate by 180 degrees at the same time. And when the partition plate 331 is exactly in a parallel state, the adjusting disk 34 exactly drives the firmly clamped pulsation sensor to rotate and move from the bottom of the partition plate 331 to the low-temperature environment space, facilitating the next low-temperature environment monitoring process.
[0022] Embodiment 2. According to Figure 1 - Figure 2 and Figure 5 - Figure 9 as shown, a linkage mechanism 2 is fixedly connected to the outer surface of the test mechanism 3; The linkage mechanism 2 includes a linkage frame 21. In the middle position of the inner wall of the linkage frame 21, a linkage seat 22 is fixedly installed. On one side of the outer wall of the linkage seat 22, a threaded seat 221 is fixedly installed. On the outer surface of the linkage seat 22, a sliding seat 23 is fixedly installed. On one side of the outer wall of the linkage frame 21, a transmission box 24 is fixedly installed. The input end of the transmission box 24 is fixedly connected to a built-in motor 241. The output end of the transmission box 24 is fixedly connected to a transmission rod 25. On one side of the outer wall of the transmission rod 25, a first bevel gear 251 is fixedly connected. The outer surface of the first bevel gear 251 is meshed and driven by a second bevel gear 252. On one side of the outer wall of the linkage frame 21, two gear boxes 253 are fixedly installed. On one side of the outer wall of the two second bevel gears 252, a fixed rod 26 is fixedly connected, and the outer surfaces of the two fixed rods 26 are rotatably connected inside the linkage frame 21; On the outer surface of the adjusting disk 34, a rotating block 341 is fixedly connected. At the bottom of the adjusting disk 34, a set of tooth grooves 342 is opened. At the bottom of the test frame 31, a bottom mounting frame 35 is fixedly connected. At the bottom of the bottom mounting frame 35, a bottom motor 351 is fixedly installed. The rotating end of the bottom motor 351 is fixedly connected to an adjusting gear 36, and the outer surface of the adjusting gear 36 is meshed and driven inside a set of tooth grooves 342. On one side of the outer wall of the adjusting gear 36, a third bevel gear 361 is fixedly installed. On one side of the outer wall of the test frame 31, a U-shaped frame 37 is fixedly connected. Inside the U-shaped frame 37, a set of bearing bodies 371 is fixedly inserted. Between the inner surfaces of the set of bearing bodies 371, an adjusting rod 372 is fixedly connected. At the top and bottom of the set of adjusting rods 372, a fourth bevel gear 38 is fixedly connected, and the inner surface of one of the two fourth bevel gears 38 is meshed and driven with the outer surface of the fifth bevel gear 332, and the inner surface of the other of the two fourth bevel gears 38 is meshed and driven with the outer surface of the third bevel gear 361. On the top of the adjusting disk 34, an electric clamping assembly 39 is fixedly installed. Inside the test frame 31, a rotating groove 311 is opened, and the outer surface of the rotating block 341 is rotatably connected inside the rotating groove 311. On one side of the outer wall of the test frame 31, a set of damping hinges 312 is fixedly installed. Between the rotating ends of the set of damping hinges 312, a sealing cover 32 is fixedly connected. Inside the test frame 31, a set of mounting holes 313 is preset. The inner surfaces of the set of mounting holes 313 are rotatably connected to a driving rod 33. Between the opposite sides of the set of driving rods 33, an isolation plate 331 is fixedly connected, and the top of the adjusting disk 34 is in contact and sealed with the bottom of the isolation plate 331. On one side of the outer wall of one of the set of driving rods 33, a fifth bevel gear 332 is fixedly connected.
[0023] In this embodiment, during the high- and low-temperature environmental tests of the device, when the device is in use, it is necessary to simulate the environment of rotation or shaking in actual work. First, when the built-in motor 241 is powered on, its output end can drive the transmission rod 25 to rotate under the transmission of the transmission box 24. And under the meshing transmission of the first bevel gear 251 and the second bevel gear 252, one of the fixed rods 26 can be kept rotating rapidly. Because the test mechanism 3 is fixedly connected between the two fixed rods 26, and when the two fixed rods 26 are in a rotating state, the whole test mechanism 3 can be driven to rotate, so as to simulate the shaking generated by the pulsation sensor during the high- and low-temperature tests.
[0024] Embodiment 3. According to Figure 1 - Figure 6 As shown, a main body mechanism 1 is arranged outside the linkage mechanism 2; The main body mechanism 1 includes a main body box 11. A set of rollers 111 are fixedly inserted at the bottom of the main body box 11. A set of electric support disks 112 are fixedly inserted at the bottom of the main body box 11. A transparent glass cover 12 is fixedly installed on the top of the main body box 11. A rear mounting frame 13 is fixedly installed on one side of the outer wall of the main body box 11. An external motor 14 is fixedly installed on one side of the outer wall of the rear mounting frame 13. A transmission gear A 141 is fixedly connected to the rotating end of the external motor 14. A fixing frame 15 is fixedly installed on the top of the main body box 11. Bearing seats 151 are fixedly connected to one side of the outer wall of the fixing frame 15 and the top of the rear mounting frame 13. A threaded rod 16 is fixedly connected between the inner surfaces of the two bearing seats 151. A transmission gear B 143 is fixedly installed on the outer surface of the threaded rod 16. A transmission belt 142 is meshed and transmitted between the outer surfaces of the transmission gear B 143 and the transmission gear A 141. A slide bar plate 17 is fixedly connected between the bottom of the fixing frame 15 and the top of the main body box 11. And the inside of the slide seat 23 is slidably embedded between the outer surfaces of the slide bar plate 17. A refrigeration component 18 is fixedly connected to one side of the outer wall of the main body box 11. A heating component 19 is fixedly connected to the bottom of the main body box 11; The linkage mechanism 2 includes a linkage frame 21. A linkage seat 22 is fixedly installed at the middle position of the inner surface of the linkage frame 21. A threaded seat 221 is fixedly installed on one side of the outer wall of the linkage seat 22. A slide seat 23 is fixedly installed on the outer surface of the linkage seat 22. A transmission box 24 is fixedly installed on one side of the outer wall of the linkage frame 21. An internal motor 241 is fixedly connected to the input end of the transmission box 24. A transmission rod 25 is fixedly connected to the output end of the transmission box 24. A first bevel gear 251 is fixedly connected to one side of the outer wall of the transmission rod 25. A second bevel gear 252 is meshed and transmitted on the outer surface of the first bevel gear 251. Two gear boxes 253 are fixedly installed on one side of the outer wall of the linkage frame 21. Fixed rods 26 are fixedly connected to one side of the outer walls of the two second bevel gears 252. And the outer surfaces of the two fixed rods 26 are rotatably connected inside the linkage frame 21.
[0025] In this embodiment, first, when the device needs to adjust an optimal and suitable position for the linkage mechanism 2 during use, the external motor 14 can drive the transmission gear A 141 at its output end to rotate rapidly when it is powered on. Moreover, the transmission gear A 141, the transmission belt 142, and the transmission gear B 143 are in a meshing transmission state with each other, thereby driving the threaded rod 16 to rotate on its own between the inner surfaces of the two bearing seats 151. When the threaded rod 16 rotates on its own, a threaded transmission is generated inside the threaded seat 221. And with the cooperation of the sliding seat 23 being slidably limited to the outer wall of the slide bar plate 17, the overall linkage mechanism 2 can be adjusted up and down inside the main body box 11.
[0026] The working principle of the entire mechanism is as follows: Before using the device to detect the cryogenic pulsation sensor, it is necessary to first simulate the test environment. The isolation plate 331 divides the interior of the test frame 31 into two independent spaces. During this process, the refrigerator in the refrigeration component 18 starts to operate. Through the compression and expansion process of the gas, heat transfer is achieved. The temperature of one of the spaces can be reduced to the low temperature range of -100°C to -20°C. The cold head of the refrigerator is connected to the inside of this space, and the heat in the space is taken away through conduction, thus achieving temperature reduction. In the heating stage, the heating component 19 plays a role. The electric heating wires are evenly arranged in the other space inside it. After the electric heating wires are powered on, they generate heat, and the heat is transferred to the air in the form of radiation, conduction, and convection, thereby increasing the temperature of this space. In this way, the two spaces are respectively subjected to refrigeration and heating treatments. Next, the cryogenic pulsation sensor to be detected is placed at the clamping port of the electric clamping component 39 through the robotic arm to ensure the stable installation of the sensor. At the same time, the top sealing cover 32 is closely matched with the test frame 31 to ensure the tightness of the test environment. Subsequently, the performance test of the pulsation sensor can be carried out. The signal generator in the pulsation signal simulation system generates a low-frequency electrical signal. This signal is amplified by the power amplifier and then drives the pulsation actuator. The pulsation actuator converts the electrical signal into the corresponding pulsating physical quantity and acts on the cryogenic pulsation sensor installed in the test frame 31. By setting different signal frequency and amplitude parameters, various complex pulsation working conditions in actual work can be simulated to detect the response ability of the sensor to pulsation signals with different frequencies and amplitudes. When the test of the pulsation sensor in the high-temperature environment is completed, it is necessary to conduct a test in the low-temperature environment. At this time, the bottom motor 351 is powered on, an electromagnetic phenomenon is generated inside, and it drives the adjustment gear 36 fixedly installed on one side of its outer wall to rotate. The adjustment gear 36 meshes and drives with the tooth groove 342. At the same time, the rotating block 341 rotates and cooperates in the rotating groove 311, so that the adjustment disk 34 and the pulsation sensor clamped on its top can rotate 180 degrees. During this rotation process, the third bevel gear 361 fixedly installed on one side of the outer wall of the adjustment disk 34 meshes and drives with one of the outer walls of the two fourth bevel gears 38. With the cooperation of the adjustment rod 372 rotating in the U-shaped frame 37 through the bearing body 371, the outer surface of the other fourth bevel gear 38 meshes and drives with the fifth bevel gear 332, thereby driving the fifth bevel gear 332, making the driving rod 33 rotate in the mounting hole 313, and then driving the isolation plate 331 to rotate 180 degrees synchronously. When the isolation plate 331 is in a parallel state, the adjustment disk 34 just drives the stably clamped pulsation sensor to rotate and move from the bottom of the isolation plate 331 to the low-temperature environment space, facilitating the next low-temperature detection. In addition, when the device conducts high- and low-temperature environment tests, to simulate the possible rotation or shaking environment in actual work, the built-in motor 241 is powered on, and its output end drives the transmission rod 25 to rotate under the transmission of the transmission box 24.Through the meshing transmission of the first bevel gear 251 and the second bevel gear 252, one of the fixed rods 26 can be rotated rapidly. Since the testing mechanism 3 is fixedly connected between the two fixed rods 26, when the two fixed rods 26 are in a rotating state, the whole testing mechanism 3 can be driven to rotate, so as to simulate the shaking situation experienced by the pulsation sensor during high and low temperature tests.
[0027] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.
Claims
1. A low temperature pulsation sensor performance high and low temperature cycle test bench, comprising: A testing mechanism (3), characterized in that the testing mechanism (3) comprises a testing frame (31) and an adjustment disk (34); The outer wall of the adjusting disk (34) is fixedly connected to a rotating block (341); a group of tooth grooves (342) are formed at the bottom of the adjusting disk (34); a bottom mounting frame (35) is fixedly connected to the bottom of the test frame (31); a bottom motor (351) is fixedly mounted at the bottom of the bottom mounting frame (35); an adjusting gear (36) is fixedly connected to the rotating end of the bottom motor (351); and an outer wall of the adjusting gear (36) is meshed and driven inside the group of tooth grooves (342); a third bevel gear (361) is fixedly mounted on one side of the outer wall of the adjusting gear (36); and a third bevel gear (361) is fixedly mounted on one side of the outer wall of the test frame (31). A U-shaped frame (37) is fixedly connected, a group of bearing bodies (371) are fixedly inserted inside the U-shaped frame (37), an adjusting rod (372) is fixedly connected between the inner surface walls of a group of the bearing bodies (371), a fourth bevel gear (38) is fixedly connected to the top and bottom of a group of the adjusting rods (372), and one of the inner surface walls of the two fourth bevel gears (38) is meshed with the outer surface wall of the fifth bevel gear (332) for transmission, and the other inner surface wall of the two fourth bevel gears (38) is meshed with the outer surface wall of the third bevel gear (361) for transmission, and an electric clamping assembly (39) is fixedly installed on the top of the adjusting disk (34).
2. A low temperature pulsation sensor performance high and low temperature cycle test bench according to claim 1, characterized in that: A rotating groove (311) is provided inside the test frame (31), and the outer wall of the rotating block (341) is rotatably connected to the inside of the rotating groove (311); a group of damping hinges (312) are fixedly installed on one side of the outer wall of the test frame (31); a sealing cover (32) is fixedly connected between the rotating ends of the group of damping hinges (312); a group of mounting holes (313) is preset inside the test frame (31); the inner walls of the group of mounting holes (313) are all rotatably connected to driving rods (33); an isolation plate (331) is fixedly connected between opposite sides of the group of driving rods (33); the top of the adjustment disk (34) is in contact and sealed with the bottom of the isolation plate (331); and a fifth bevel gear (332) is fixedly connected to one side of the outer wall of one of the group of driving rods (33).
3. A low temperature pulsation sensor performance high and low temperature cycle test bench according to claim 2, characterized in that: The outer wall of the testing mechanism (3) is fixedly connected with a linkage mechanism (2); The linkage mechanism (2) comprises a linkage frame (21), a linkage seat (22) is fixedly mounted at the middle of the inner wall of the linkage frame (21), a threaded seat (221) is fixedly mounted on one side of the outer wall of the linkage seat (22), and a sliding seat (23) is fixedly mounted on the outer wall of the linkage seat (22).
4. A low temperature pulsation sensor performance high and low temperature cycle test bench according to claim 3, characterized in that: A transmission box (24) is fixedly mounted on one side of the outer wall of the linkage frame (21); an input end of the transmission box (24) is fixedly connected to a built-in motor (241); an output end of the transmission box (24) is fixedly connected to a transmission rod (25); and an outer wall side of the transmission rod (25) is fixedly connected to a first bevel gear (251).
5. A low temperature pulsation sensor performance high and low temperature cycle test bench according to claim 4, characterized in that: The outer wall of the first bevel gear (251) is meshed with a second bevel gear (252), two gear boxes (253) are fixedly mounted on one side of the outer wall of the linkage frame (21), one side of the outer walls of the two second bevel gears (252) are fixedly connected to a fixing rod (26), and the outer walls of the two fixing rods (26) are rotatably connected to the interior of the linkage frame (21).
6. A low temperature pulsation sensor performance high and low temperature cycle test bench according to claim 5, characterized in that: A gear box (253) is fixedly mounted on one side of the outer wall of the linkage frame (21), and the transmission rod (25) and one of the outer walls of the two fixed rods (26) are both rotatably connected to the inside of the gear box (253), and one side of the outer walls of the two fixed rods (26) is fixedly connected to the outer wall of the test frame (31).
7. A low temperature pulsation sensor performance high and low temperature cycle test bench according to claim 6, characterized in that: A main body mechanism (1) is arranged outside the linkage mechanism (2); The main body mechanism (1) comprises a main body box (11), a group of rollers (111) are fixedly inserted at the bottom of the main body box (11), and a group of electric support plates (112) are fixedly inserted at the bottom of the main body box (11).
8. A low temperature pulsation sensor performance high and low temperature cycle test bench according to claim 7, characterized in that: A transparent glass cover (12) is fixedly mounted on the top of the main box (11); a rear mounting frame (13) is fixedly mounted on one side of an outer wall of the main box (11); an external motor (14) is fixedly mounted on one side of an outer wall of the rear mounting frame (13); and a transmission gear A (141) is fixedly connected to a rotating end of the external motor (14).
9. A low temperature pulsation sensor performance high and low temperature cycle test bench according to claim 8, characterized in that: A fixing frame (15) is fixedly mounted on the top of the main box (11); a bearing seat (151) is fixedly connected to one side of the outer wall of the fixing frame (15) and the top of the rear mounting frame (13); a threaded rod (16) is fixedly connected between the inner walls of the two bearing seats (151); a transmission gear B (143) is fixedly mounted on the outer wall of the threaded rod (16); and a transmission belt (142) is meshed and transmitted between the outer walls of the transmission gear B (143) and the transmission gear A (141).
10. A low temperature pulsation sensor performance high and low temperature cycle test bench according to claim 9, characterized in that: A sliding plate (17) is fixedly connected between the bottom of the fixing frame (15) and the top of the main box (11), and the interior of the sliding seat (23) is slidably embedded between the outer walls of the sliding plate (17), a refrigeration component (18) is fixedly connected to one side of the outer wall of the main box (11), and a heating component (19) is fixedly connected to the bottom of the main box (11).