Pressure generator for sine pressure dynamic simulation

Abstract

The utility model relates to a pressure generator for sine pressure dynamic simulation, and relates to the technical field of test equipment, the pressure generator comprises a support plate, a test box, a mounting assembly and a pressure generation assembly, the test box is connected to the support plate, the test box is provided with a mounting hole and is connected with a standard pressure sensor, the mounting assembly is arranged at the mounting hole, and the pressure generation assembly is connected with the standard pressure sensor. The installation assembly is used for installing a to-be-tested pressure sensor in the test box, the pressure generation assembly comprises a pressure generation part and a sine driving part, the pressure generation part comprises a pressure generation cylinder, a pressure generation piston and a pressure generation piston rod, the pressure generation cylinder communicates with the test box, the pressure generation piston is arranged in the pressure generation cylinder in a sealed and sliding mode, one end of the pressure generation piston rod is connected with the pressure generation piston, and the other end of the pressure generation piston rod is connected with the sine driving part. And the sine driving part is arranged on the supporting plate and is used for driving the pressure generating piston to slide so as to enable the pressure generating piston to generate air pressure with sinusoidal variation into the test box. The application has the effect of applying sinusoidal dynamic simulation pressure to the to-be-tested pressure sensor.

Description

Technical Field

[0001] This application relates to the technical field of testing equipment, and in particular to a pressure generator for dynamic simulation of sinusoidal pressure. Background Technology

[0002] Pressure sensors are widely used in various fields. Pressure sensors need to be tested during manufacturing and use to verify whether their measurement accuracy meets the standard requirements.

[0003] Currently, the testing of pressure sensors mainly uses a standard pressure generator. The standard pressure generator generates pressure and applies the generated pressure to the pressure sensor under test. The pressure sensor detects the pressure value of the generated pressure and compares it with the pressure value of the standard pressure generator. The difference is used to determine whether the pressure sensor meets the requirements.

[0004] Since standard pressure generators can only generate fixed pressure, it is difficult to apply sinusoidally changing dynamic simulated pressure to the pressure sensor under test, thus making it impossible to verify the dynamic measurement accuracy of the pressure sensor. Utility Model Content

[0005] In order to apply sinusoidally varying dynamic simulated pressure to a pressure sensor to verify the dynamic measurement accuracy of the pressure sensor, this application provides a pressure generator for sinusoidal pressure dynamic simulation.

[0006] This application provides a pressure generator for dynamic simulation of sinusoidal pressure, which adopts the following technical solution:

[0007] A pressure generator for dynamic simulation of sinusoidal pressure includes a support plate, a test box, a mounting assembly, and a pressure generation assembly. The test box is connected to the support plate and has a mounting hole for connecting a standard pressure sensor. The mounting assembly is located at the mounting hole and is used to mount the pressure sensor under test inside the test box. The pressure generation assembly includes a pressure generation section and a sinusoidal drive section. The pressure generation section includes a pressure generation cylinder, a pressure generation piston, and a pressure generation piston rod. The pressure generation cylinder is connected to the test box, and the pressure generation piston is slidably and sealed inside the pressure generation cylinder. One end of the pressure generation piston rod is connected to the pressure generation piston, and the other end is connected to the sinusoidal drive section. The sinusoidal drive section is located on the support plate and is used to drive the pressure generation piston to slide, so that the pressure generation piston generates a sinusoidally changing air pressure into the test box.

[0008] Optionally, the sinusoidal drive unit includes a speed-regulating motor, a crank block, and a connecting rod. The speed-regulating motor is mounted on a support plate, and the output shaft of the speed-regulating motor is connected to the crank block. One end of the connecting rod is rotatably connected to the crank block, and the other end is rotatably connected to the end of the pressure-generating piston rod away from the pressure-generating piston.

[0009] Optionally, a needle roller bearing is installed at the rotatable connection between the connecting rod and the crank block.

[0010] Optionally, the pressure generation assembly further includes a linear guide, which includes a guide sleeve and a linear bearing. The guide sleeve is connected to the end of the pressure generation cylinder away from the test box and is sleeved on the pressure generation piston rod. The linear bearing is installed between the guide sleeve and the pressure generation piston rod.

[0011] Optionally, the pressure-generating piston has a connecting groove, and a connector is connected to the pressure-generating piston rod. The connector is located in the connecting groove, and an elastic pad is provided between the connector and the bottom of the connecting groove. A locking sleeve is fitted on the connector, and the outer wall of the locking sleeve is detachably connected to the groove wall. A locking boss is connected to the inner wall of the locking sleeve, and the locking boss is located on the side of the connector away from the elastic pad. An elastic ring is provided between the locking boss and the connector. The locking sleeve is used to press the locking boss against the elastic ring and to press the connector against the elastic pad. The locking boss is used to prevent the connector from coming out of the connecting groove.

[0012] Optionally, the test box is connected to a gas circuit assembly, which includes a gas supply line and an exhaust line. One end of the gas supply line is connected to the test box, and the other end is used to connect to an air pump. A solenoid valve is provided on the gas supply line to open and close the gas supply line. One end of the exhaust line is connected to the test box, and a switch valve is provided on the other end to open and close the exhaust line.

[0013] Optionally, the test box is connected to a pressure regulating assembly, which includes a pressure regulating cylinder, a pressure regulating piston, and an electric push rod. The pressure regulating cylinder is connected to the test box, the pressure regulating piston is slidably disposed inside the pressure regulating cylinder, and the electric push rod is connected to a support plate. The movable end of the electric push rod is connected to the pressure regulating piston.

[0014] Optionally, the mounting assembly includes a mounting cover and a mounting base. The mounting cover is disposed on the mounting hole and connected to the test box. The mounting base passes through the mounting cover. The pressure sensor to be tested is mounted on the end of the mounting base located inside the test box. The end of the mounting base located outside the test box is connected to an aviation plug. The aviation plug is used for electrical connection to a power source. The pressure sensor to be tested is electrically connected to the aviation plug.

[0015] Optionally, a protective shell is connected to the support plate, and the protective shell covers the test box, the mounting assembly, and the pressure generating assembly.

[0016] Optionally, the support plate is connected to multiple adjustable feet.

[0017] In summary, this application includes at least one of the following beneficial technical effects:

[0018] 1. This application discloses a pressure generator for sinusoidal pressure dynamic simulation, comprising a support plate, a test box, a mounting assembly, and a pressure generating assembly. The pressure sensor under test is mounted on the mounting base. The speed-regulating motor, through a crank block, connecting rod, pressure generating piston rod, and pressure generating piston, enables the air pressure in the test box to change sinusoidally, allowing the pressure sensor under test to perform sinusoidal pressure dynamic simulation. Compared with fixed pressure, this can verify the dynamic measurement accuracy of the pressure sensor under test.

[0019] 2. The pressure generator for sinusoidal pressure dynamic simulation of this application also includes an air circuit assembly and a pressure regulating assembly. The air supply pipeline can fill the test box with air through an air pump so that the pressure inside the test box can be increased to the test pressure. The electric push rod drives the pressure regulating piston to slide so as to accurately regulate the pressure inside the test box, thereby enabling the pressure value inside the test box to be accurately regulated to the required pressure value. Attached Figure Description

[0020] Figure 1 This is a structural schematic diagram of an embodiment of this application;

[0021] Figure 2 This is a structural diagram of the test box, mounting components, pressurization components, gas path components, and pressure regulating components;

[0022] Figure 3 This is an exploded view of the mounting cover and test box;

[0023] Figure 4 This is a structural diagram of the pressure generating section and the linear guide section;

[0024] Figure 5 This is a cross-sectional view of the connector and locking sleeve;

[0025] Figure 6 This is a schematic diagram of the pressure regulating piston.

[0026] Explanation of reference numerals in the attached figures:

[0027] 1. Support plate; 11. Protective shell; 12. Adjustable feet; 2. Test box; 21. Mounting hole; 22. Standard pressure sensor; 3. Mounting assembly; 31. Mounting cover; 32. Mounting base; 33. Aviation connector; 34. Pull-up head; 4. Pressure building assembly; 41. Pressure building section; 411. Pressure building cylinder; 412. Pressure building piston; 4121. Connecting groove; 413. Pressure building piston rod; 414. Connector; 415. Elastic pad; 416. Locking sleeve; 417 418. Locking boss; 42. Elastic ring; 43. Sine drive unit; 44. Speed ​​regulating motor; 45. Crank block; 46. Connecting rod; 47. Needle roller bearing; 48. Linear guide unit; 49. Guide sleeve; 40. Linear bearing; 41. Support; 50. Air circuit assembly; 51. Air supply line; 52. Solenoid valve; 53. Exhaust line; 54. Switch valve; 55. Pressure regulating assembly; 66. Pressure regulating cylinder; 67. Pressure regulating piston; 68. Electric push rod. Detailed Implementation

[0028] The following is in conjunction with the appendix Figure 1-6 This application will be described in further detail.

[0029] This application discloses a pressure generator for dynamic simulation of sinusoidal pressure. (Refer to...) Figure 1 and Figure 2 A pressure generator for dynamic simulation of sinusoidal pressure includes a support plate 1, a test box 2, a mounting assembly 3, and a pressure generating assembly 4.

[0030] Reference Figure 2 and Figure 3 The test box 2 is fixed to the support plate 1. The end of the test box 2 away from the support plate 1 has a mounting hole 21. The mounting component 3 is set at the mounting hole 21 and is used to install the pressure sensor to be tested inside the test box 2.

[0031] Reference Figure 2 A standard pressure sensor 22 is fixedly connected to the side wall of the test box 2. The standard pressure sensor 22 is a digital pressure sensor. The standard pressure sensor 22 is used to test the air pressure value inside the test box 2, so as to use it as a comparison value with the measured value of the pressure sensor under test.

[0032] Reference Figure 2 and Figure 4 The pressure generating assembly 4 includes a pressure generating section 41 and a sinusoidal drive section 42. The pressure generating section 41 includes a pressure generating cylinder 411, a pressure generating piston 412, and a pressure generating piston rod 413.

[0033] The pressure generating cylinder 411 is connected to the test box 2. The pressure generating piston 412 is slidably disposed inside the pressure generating cylinder 411. One end of the pressure generating piston rod 413 is connected to the pressure generating piston 412, and the other end is connected to the sine drive unit 42. The sine drive unit 42 is disposed on the support plate 1. The sine drive unit 42 is used to drive the pressure generating piston 412 to slide, so that the pressure generating piston 412 generates a sinusoidally changing air pressure into the test box 2.

[0034] In use, the pressure sensor to be tested is installed on the mounting assembly 3. The sinusoidal drive unit 42 drives the pressure generating piston 412 to slide through the pressure generating piston rod 413. During the sliding process, the pressure generating piston 412 causes the air pressure in the test box 2 to exhibit sinusoidal dynamic changes. Both the standard pressure sensor 22 and the pressure sensor to be tested detect the dynamic air pressure value in the test box 2. By comparing the dynamic pressure value detected by the standard pressure sensor 22 and the dynamic pressure value detected by the pressure sensor to be tested, the dynamic measurement accuracy of the pressure sensor to be tested is verified. This allows the air pressure generator to apply sinusoidally changing dynamic simulated pressure to the pressure sensor to be tested, thereby verifying the dynamic measurement accuracy of the pressure sensor to be tested.

[0035] Specifically, refer to Figure 2 The sinusoidal drive unit 42 includes a speed-regulating motor 421, a crank block 422, and a connecting rod 423.

[0036] The speed-regulating motor 421 is fixedly connected to the support plate 1. The output shaft of the speed-regulating motor 421 is fixedly connected to the center position of the crank block 422. One end of the connecting rod 423 is rotatably connected to the eccentric position of the crank block 422, and the other end is rotatably connected to the end of the pressure-generating piston rod 413 away from the pressure-generating piston 412.

[0037] In use, the speed-regulating motor 421 is started, which drives the crank block 422 to rotate. During the rotation of the crank block 422, the connecting rod 423 is driven to swing back and forth. During the swing, the connecting rod 423 drives the pressure-generating piston rod 413 to move back and forth. During the movement, the pressure-generating piston rod 413 drives the pressure-generating piston 412 to slide back and forth, so that the pressure-generating piston 412 can make the air pressure in the test box 2 exhibit sinusoidal dynamic changes. At the same time, by adjusting the rotation speed of the crank block 422 through the speed-regulating motor 421, the frequency of the sinusoidal changes in air pressure in the test box 2 can be controlled.

[0038] Specifically, refer to Figure 2 When the speed of the speed-regulating motor 421 is too high, it will cause the frequency of the sinusoidal change of air pressure in the test box 2 to be too high. The excessively high frequency of the sinusoidal change of air pressure in the test box 2 will easily lead to an increase in the air temperature in the test box 2, which is not conducive to the stable measurement of air pressure in the test box 2. Therefore, this application prefers to control the frequency of the sinusoidal change of air pressure in the test box 2 to be within 8Hz using the speed-regulating motor 421.

[0039] Furthermore, referring to Figure 4 A needle roller bearing 424 is installed at the rotating connection between the connecting rod 423 and the crank block 422. The needle roller bearing 424 makes it less likely for the connecting rod 423 and the crank block 422 to wear during rotation, and reduces the friction between the connecting rod 423 and the crank block 422, making it easier for the crank block 422 to drive the connecting rod 423 to swing.

[0040] Reference Figure 2 and Figure 4 To improve the stability of the pressure-generating piston rod 413 driving the pressure-generating piston 412, the pressure-generating assembly 4 also includes a linear guide part 43. The linear guide part 43 includes a guide sleeve 431 and a linear bearing 432. The guide sleeve 431 is fixedly connected to the end of the pressure-generating cylinder 411 away from the test box 2 and is sleeved on the pressure-generating piston rod 413. The guide sleeve 431 is fixedly connected to the support plate 1 through the support 433. The linear bearing 432 is installed between the guide sleeve 431 and the pressure-generating piston rod 413. The linear bearing 432 is sleeved on the pressure-generating piston rod 413, and the guide sleeve 431 is sleeved on the linear bearing 432.

[0041] When the pressure-generating piston rod 413 drives the pressure-generating piston 412 to slide, the guide sleeve 431 can guide and restrict the movement trajectory of the pressure-generating piston 412 through the linear bearing 432, so that the driving force of the pressure-generating piston rod 413 on the pressure-generating piston 412 can always be parallel to the sliding direction of the pressure-generating piston 412. This makes it less likely for the pressure-generating piston 412 to experience skewed wear against the inner wall of the pressure-generating cylinder 411, which helps to extend the service life of the pressure-generating piston 412.

[0042] Reference Figure 4 and Figure 5 In order to enable the pressure-generating piston rod 413 and the pressure-generating piston 412 to be flexibly connected and to avoid additional frictional resistance between the pressure-generating cylinder 411 and the pressure-generating piston 412, a connecting groove 4121 is provided on the pressure-generating piston 412, and a connector 414 is fixedly connected to the pressure-generating piston rod 413. The connector 414 is located in the connecting groove 4121, and an elastic pad 415 is provided between the connector 414 and the bottom of the connecting groove 4121.

[0043] Reference Figure 5 A locking sleeve 416 is fitted onto the connector 414. The outer wall of the locking sleeve 416 is detachably connected to the groove wall of the connecting groove 4121 by threads. A locking boss 417 is integrally formed on the inner wall of the locking sleeve 416. The locking boss 417 is located on the side of the connector 414 away from the elastic pad 415. An elastic ring 418 is provided between the locking boss 417 and the connector 414. The locking sleeve 416 is used to press the locking boss 417 against the elastic ring 418 and to press the connector 414 against the elastic pad 415. The locking boss 417 is used to prevent the connector 414 from coming out of the connecting groove 4121.

[0044] In this application, both the elastic pad 415 and the elastic ring 418 are made of silicone material.

[0045] When the locking sleeve 416 is screwed into the connecting groove 4121, the connector 414 can be stably installed in the connecting groove 4121 under the elastic deformation of the elastic pad 415 and the elastic ring 418, so as to realize the flexible connection between the pressure piston 412 and the pressure piston rod 413. When the pressure piston rod 413 drives the pressure piston 412 to slide, the pressure piston rod 413 can drive the connector 414 to tilt slightly. The connector 414 squeezes the elastic pad 415 and the elastic ring 418 to deform, so that the axis of the pressure piston rod 413 and the axis of the pressure piston 412 can be adaptively adjusted to coincide, so that the pressure cylinder 411 and the pressure piston 412 are less likely to generate additional frictional resistance.

[0046] Reference Figure 2 To facilitate the adjustment of air pressure inside the test box 2, an air circuit assembly 5 is connected to the test box 2. The air circuit assembly 5 includes an air supply pipe 51 and an exhaust pipe 52. One end of the air supply pipe 51 is connected to the test box 2, and the other end is used to connect to an air pump. A solenoid valve 511 is provided on the air supply pipe 51, which is used to open and close the air supply pipe 51. One end of the exhaust pipe 52 is connected to the test box 2, and a switch valve 521 is provided on the other end, which is used to open and close the exhaust pipe 52.

[0047] After installing the pressure sensor to be tested, open the solenoid valve 511 and use the air pump to inflate the test box 2, so that the air pressure inside the test box 2 can be increased to the required pressure value, making the test pressure inside the test box 2 easy to adjust; when it is necessary to vent and depressurize after the test, open the switch valve 521, so that the test box 2 can be connected to the atmosphere through the exhaust pipe 52, making it easy to reduce the air pressure inside the test box 2; since the air supply pipe 51 and the exhaust pipe 52 are set independently, the inflation and deflation of the test box 2 do not interfere with each other, and there is no need to disassemble the air pump when the test box 2 needs to be vented.

[0048] Reference Figure 2 and Figure 6 In order to facilitate precise control of the air pressure value inside the test box 2, a pressure regulating component 6 is connected to the test box 2. The pressure regulating component 6 includes a pressure regulating cylinder 61, a pressure regulating piston 62 and an electric push rod 63. The pressure regulating cylinder 61 is connected to the test box 2. The pressure regulating piston 62 is sealed and slidably disposed inside the pressure regulating cylinder 61. The electric push rod 63 is fixedly connected to the support plate 1. The movable end of the electric push rod 63 is fixedly connected to the pressure regulating piston 62.

[0049] Before testing, the pressure regulating piston 62 can be moved by the electric push rod 63. During the movement of the pressure regulating piston 62, the pressure regulating piston 62 can adjust the size of the connected volume between the pressure regulating cylinder 61 and the test box 2. When the connected volume between the pressure regulating cylinder 61 and the test box 2 decreases, the air pressure in the test box 2 will increase. When the connected volume between the pressure regulating cylinder 61 and the test box 2 increases, the air pressure in the test box 2 will decrease, thereby enabling precise control of the air pressure value in the test box 2.

[0050] Specifically, refer to Figure 2 and Figure 3 The mounting assembly 3 includes a mounting cover 31 and a mounting base 32. The mounting cover 31 covers the mounting hole 21 and is bolted to the test box 2. The mounting base 32 is fixedly inserted through the mounting cover 31. The pressure sensor to be tested is mounted on the end of the mounting base 32 located inside the test box 2. An aviation plug 33 is fixedly connected to the end of the mounting base 32 located outside the test box 2. The aviation plug 33 is used for electrical connection to a power source. The pressure sensor to be tested is electrically connected to the aviation plug 33.

[0051] Remove the mounting cover 31 to install the pressure sensor under test on the mounting base 32, and then install the mounting cover 31 on the test box 2 so that the pressure sensor under test can be installed inside the test box 2; connect it to the power supply via the aviation plug 33 so that the pressure sensor under test can be easily connected to the power supply.

[0052] Furthermore, referring to Figure 2 The mounting cover 31 is hinged with two pull heads 34. When it is necessary to remove the mounting cover 31, the two pull heads 34 are pulled to make it easy to remove the mounting cover 31 from the mounting hole 21.

[0053] Reference Figure 1 and Figure 2 In order to prevent all the components on the support plate 1 from being damaged by collision, a protective shell 11 is bolted to the support plate 1. The protective shell 11 covers the test box 2, the mounting component 3, the pressurization component 4, the air circuit component 5, and the pressure regulating component 6.

[0054] The protective housing 11 is installed on the support plate 1. The protective housing 11 can protect the test box 2, the mounting component 3, the pressurization component 4, the gas path component 5, and the pressure regulating component 6, so that the test box 2, the mounting component 3, the pressurization component 4, the gas path component 5, and the pressure regulating component 6 are not easily damaged.

[0055] Reference Figure 1 and Figure 2 In order to ensure that the support plate 1 is in a horizontal position during use, four adjustable feet 12 are threaded on the support plate 1. By adjusting the four adjustable feet 12, the support plate 1 can be adjusted to be in a horizontal position to facilitate the use of the pressure generator.

[0056] The implementation principle of a pressure generator for sinusoidal pressure dynamic simulation in this application embodiment is as follows: In use, the pressure sensor to be tested is installed on the mounting base 32. The air pump adjusts the air pressure in the test box 2 to the test pressure through the air supply pipeline 51. The electric push rod 63 precisely controls the air pressure in the test box 2 through the pressure regulating piston 62. Then, the speed regulating motor 421 is started. The speed regulating motor 421 causes the air pressure in the test box 2 to change sinusoidally through the crank block 422, connecting rod 423, pressure generating piston rod 413 and pressure generating piston 412. The standard pressure sensor 22 and the pressure sensor to be tested simultaneously detect the sinusoidally changing air pressure in the test box 2, thereby applying a sinusoidally changing dynamic simulation pressure to the pressure sensor to be tested to verify the dynamic measurement accuracy of the pressure sensor to be tested.

[0057] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A pressure generator for sinusoidal pressure dynamic simulation, characterized by: The utility model relates to a pressure sensor test device, including support board (1), test box (2), installation component (3) and pressure generating component (4), test box (2) is connected on support board (1), and the installation hole (21) is seted up on test box (2), and is connected with standard pressure sensor (22), and installation component (3) is set at installation hole (21), and installation component (3) is used to install the pressure sensor to be measured in test box (2), and pressure generating component (4) includes pressure generating part (41) and sine drive part (42), and pressure generating part (41) includes pressure generating cylinder (411), pressure generating piston (412) and pressure generating piston rod (413), and pressure generating cylinder (411) is communicated on test box (2), and pressure generating piston (412) is sealed and is slidably arranged in pressure generating cylinder (411), and one end of pressure generating piston rod (413) is connected with pressure generating piston (412), and the other end is connected with sine drive part (42), and sine drive part (42) is set on support board (1), and sine drive part (42) is used to drive pressure generating piston (412) to slide, so that pressure generating piston (412) generates the air pressure of sinusoidal variation to test box (2) inside.

2. The pressure generator for dynamic simulation of sinusoidal pressure according to claim 1, characterized in that: The sine drive part (42) includes a speed-regulating motor (421), a crank block (422) and a connecting rod (423), the speed-regulating motor (421) is installed on the support board (1), an output shaft of the speed-regulating motor (421) is connected with the crank block (422), one end of the connecting rod (423) is rotatably connected with the crank block (422), and the other end is rotatably connected with the end of the pressure generating piston rod (413) away from the pressure generating piston (412).

3. The pressure generator for dynamic simulation of sinusoidal pressure according to claim 2, characterized in that: The connecting rod (423) is provided with a needle bearing (424) at the rotatable connection with the crank block (422).

4. The pressure generator for dynamic simulation of sinusoidal pressure according to claim 1, characterized in that: The pressure generating component (4) further includes a linear guide part (43), the linear guide part (43) includes a guide sleeve (431) and a linear bearing (432), the guide sleeve (431) is connected with the end of the pressure generating cylinder (411) away from the test box (2) and is sleeved on the pressure generating piston rod (413), and the linear bearing (432) is installed between the guide sleeve (431) and the pressure generating piston rod (413).

5. The pressure generator for dynamic simulation of sinusoidal pressure according to claim 1, characterized in that: The connecting groove (4121) is arranged on the green pressure piston (412), the connecting head (414) is connected to the green pressure piston rod (413), the connecting head (414) is located in the connecting groove (4121), the elastic pad (415) is arranged between the connecting head (414) and the groove bottom of the connecting groove (4121), the locking sleeve (416) is sleeved on the connecting head (414), the outer wall of the locking sleeve (416) is detachably connected with the groove wall of the connecting groove (4121), the locking boss (417) is connected to the inner wall of the locking sleeve (416), the locking boss (417) is located on the side of the connecting head (414) away from the elastic pad (415), and the elastic ring (418) is arranged between the locking boss (417) and the connecting head (414). The locking sleeve (416) is used for extruding the locking boss (417) on the elastic ring (418), and is used for extruding the connecting head (414) on the elastic pad (415). The locking boss (417) is used to limit the connecting head (414) from being pulled out of the connecting groove (4121).

6. The pressure generator for dynamic simulation of sinusoidal pressure according to claim 1, characterized in that: The test box (2) is connected with an air path assembly (5), the air path assembly (5) comprises a gas supply pipeline (51) and an exhaust pipeline (52), one end of the gas supply pipeline (51) is communicated with the test box (2), the other end is used for being communicated with a gas pump, the electromagnetic valve (511) is arranged on the gas supply pipeline (51), and the electromagnetic valve (511) is used for opening and closing the gas supply pipeline (51), one end of the exhaust pipeline (52) is communicated with the test box (2), and the other end is provided with a switch valve (521), and the switch valve (521) is used for opening and closing the exhaust pipeline (52).

7. The pressure generator for dynamic simulation of sinusoidal pressure according to claim 1, characterized in that: The test box (2) is connected with a pressure regulating assembly (6), the pressure regulating assembly (6) comprises a pressure regulating cylinder (61), a pressure regulating piston (62) and an electric push rod (63), the pressure regulating cylinder (61) is communicated with the test box (2), the pressure regulating piston (62) is sealingly and slidably arranged in the pressure regulating cylinder (61), and the electric push rod (63) is connected to the support plate (1). The movable end of the electric push rod (63) is connected with the pressure regulating piston (62).

8. The pressure generator for dynamic simulation of sinusoidal pressure according to claim 1, characterized in that: The mounting assembly (3) comprises a mounting cover (31) and a mounting seat (32), the mounting cover (31) is arranged at the mounting hole (21) and is connected to the test box (2), the mounting seat (32) is arranged on the mounting cover (31), the to-be-tested pressure sensor is arranged on one end of the mounting seat (32) in the test box (2), and the other end of the mounting seat (32) is connected with an aviation plug (33). The aviation plug (33) is used for electrical connection with a power supply, and the to-be-tested pressure sensor is electrically connected with the aviation plug (33).

9. The pressure generator for dynamic simulation of sinusoidal pressure according to claim 1, characterized in that: The support plate (1) is connected with a protective shell (11), and the protective shell (11) covers the test box (2), the mounting assembly (3) and the green pressure assembly (4).

10. The pressure generator for dynamic simulation of sinusoidal pressure according to claim 1, characterized in that: A plurality of adjustable supporting legs (12) are connected to the support plate (1).

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