Withstand voltage test device

Abstract

The invention provides a withstand voltage test device, and belongs to the technical field of electronic equipment detection. The pressure resistance test device comprises a sealing tank body, a movement assembly and a sealing assembly, a sealing cavity for accommodating an electronic device is formed in the sealing tank body, the sealing tank body is provided with an air inlet hole, and the air inlet hole is communicated with the sealing cavity; a first part of the moving assembly is located in the sealed tank body, a second part of the moving assembly is located outside the sealed tank body, and the moving assembly can move relative to the sealed tank body; the sealing assembly is located between the moving assembly and the sealing tank body, and the sealing assembly is connected with the sealing tank body. According to the invention, the voltage resistance of the electronic device in the motion state can be detected.

Description

Technical Field

[0001] The present invention belongs to the technical field of electronic equipment detection, and in particular relates to a withstand voltage test device. Background Art

[0002] With the development of domestic underwater products, more and more electronic equipment are required to have a certain pressure resistance, such as pressure sensors, position sensors, proximity switches, encoders, etc. that need to be used underwater.

[0003] In the related art, the pressure resistance performance of electronic devices is often tested through a pressure test device. Among them, the pressure test device is generally a sealed tank body that can withstand a high-pressure environment. The sealed tank body includes a cylinder body and a cylinder head. The cylinder head is detachably connected to the top of the cylinder body. At least one air inlet hole is provided in the cylinder head to increase the pressure of the sealed tank body through the air inlet hole. During the test, the electronic device to be tested is directly placed in the sealed tank body. If the pressure does not meet the test conditions, the sealed tank body is inflated through the air inlet hole.

[0004] However, since the above pressure test device is a sealed tank, it can only test stationary electronic devices. If it is necessary to test the pressure resistance performance of electronic devices in a moving state, the above pressure test device is obviously unable to complete it. Summary of the invention

[0005] The embodiment of the present disclosure provides a pressure resistance test device, which can detect the pressure resistance performance of electronic devices in motion. The technical solution is as follows:

[0006] An embodiment of the present disclosure provides a pressure test device, which includes a sealed tank body, a moving component and a sealing component; the sealed tank body has a sealed cavity for accommodating electronic devices, and the sealed tank body has an air inlet, which is connected to the sealed cavity; the first part of the moving component is located inside the sealed tank body and is used to connect with the electronic device, the second part of the moving component is located outside the sealed tank body, the moving component can move relative to the sealed tank body, and the first part is connected to the second part; the sealing component is located between the moving component and the sealed tank body, and the sealing component is connected to the sealed tank body.

[0007] In another implementation of the present disclosure, the moving component is a movable rod, which is inserted into the sealed can body, and the first end of the movable rod is used to connect with the electronic device, and the second end of the movable rod is used to connect with a driving device. The movable rod can move along its own axis or rotate around its own axis when driven by the driving device.

[0008] In yet another implementation of the present disclosure, the pressure test device further includes a guide ring, which is sleeved outside the movable rod and located in the sealing assembly, and the guide ring is loosely matched with the movable rod.

[0009] In another implementation of the present disclosure, the sealing assembly includes a sealing end plate, a stuffing box and a sealing stuffing; the sealing end plate and the stuffing box are sequentially sleeved on the outside of the movable rod along the axial direction of the movable rod, and the sealing end plate is located outside the sealing tank body, the stuffing box is partially located in the sealing tank body, the stuffing box is connected to the sealing end plate, and the stuffing box and the sealing end plate form a stuffing cavity; the sealing stuffing is filled in the stuffing cavity.

[0010] In yet another implementation of the present disclosure, the sealing end plate has a first inclined surface on a side facing the sealing packing, and the first inclined surface is inclined toward the sealing packing along the radial outward direction of the movable rod.

[0011] In another implementation of the present disclosure, the stuffing box has a second slope, which is arranged opposite to the first slope, and the second slope has an inclination direction opposite to that of the first slope; the stuffing cavity is between the second slope and the first slope.

[0012] In yet another implementation of the present disclosure, the sealing assembly further includes a sealing bushing, wherein the sealing bushing is located between the stuffing box and the movable rod in a radial direction of the movable rod.

[0013] In another implementation of the present disclosure, the sealing assembly further includes two sealing rings, one of which is clamped between the stuffing box and the sealing tank body, and the other of which is clamped between the stuffing box and the sealing bushing.

[0014] In another implementation of the present disclosure, the sealed tank body includes a cylinder cover, a cylinder body and an adapter plate; the cylinder body is sealed and connected to the top of the cylinder cover, and forms the sealed cavity with the cylinder body; the adapter plate is located in the cylinder cover and connected to the cylinder cover, and the adapter plate is used to electrically connect to the electronic device in the sealed cavity.

[0015] In another implementation of the present disclosure, the sealed tank body further includes a partition, which is located in the sealed cavity and connected to the cylinder body, and the partition is used to divide the sealed cavity into a plurality of test areas, at least one of the plurality of test areas having the moving component.

[0016] The technical solution provided by the embodiments of the present disclosure has the following beneficial effects:

[0017] When the pressure test device provided by the embodiment of the present disclosure is used to perform a pressure test on an electronic device, since the pressure test device includes a sealed tank body, and an air inlet is provided in the sealed tank body, and the air inlet is connected to the sealed cavity, water or other liquids can be added to the sealed cavity before the test, and then the electronic device to be tested is placed in the sealed cavity for testing. If the pressure in the sealed cavity does not meet the test conditions, the sealed cavity can be pressurized through the air inlet until the pressure in the sealed cavity meets the test requirements.

[0018] Since the pressure test device includes a moving assembly, the first part of the moving assembly is located inside the sealed tank body, the second part of the moving assembly is located outside the sealed tank body, and the moving assembly can rotate or move linearly relative to the sealed tank body. In this way, when conducting a test, the electronic device that needs to move can be connected to the first part of the moving assembly, so that the electronic device can be driven to move by the moving assembly, and then the pressure resistance performance of the electronic device in the moving state can be tested.

[0019] Furthermore, since the pressure test device further includes a sealing component, the sealing component is located between the moving component and the sealed tank body, and the sealing component is connected to the sealed tank body, and the sealing component is used to seal the moving component and the sealed tank body. In this way, the moving component and the sealed tank body can be sealed by the sealing component during the test, thereby preventing the pressure release of the sealed chamber due to the movement of the moving component during the test, thereby improving the detection accuracy of the pressure test.

[0020] It can be seen that the above withstand voltage test device can not only perform withstand voltage test on electronic devices in a static state, but also perform withstand voltage test on electronic devices in a moving state, and can meet the testing needs of electronic devices in different situations. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0022] Figure 1 is a structural schematic diagram of a pressure test device provided by an embodiment of the present disclosure;

[0023] Figure 2 yes Figure 1 Cross-sectional view along AA direction;

[0024] Figure 3 yes Figure 2 Schematic diagram of the structure of the sealing component.

[0025] The symbols in the figure mean the following:

[0026] 1. Sealed tank body; 10. Sealed cavity; 101. Air inlet; 102. Air outlet; 103. Drainage hole;

[0027] 11. Cylinder head; 111. Cover plate; 112. Rib plate; 113. Reinforcement ring;

[0028] 12. Cylinder body; 121. Cylinder body; 122. Bottom plate; 123. External flange; 124. Support;

[0029] 13. Adapter plate; 15. Partition plate;

[0030] 2. Motion assembly; 21. Movable rod;

[0031] 3. Sealing assembly; 31. Sealing end plate; 311. Outer ring; 312. Bushing; 3120. Oil groove; 32. Stuffing box; 320. Stuffing cavity; 321. Flange; 322. Box body; 3221. Inner flange; 33. Sealing packing; 3101. First inclined surface; 3201. Second inclined surface; 35. Sealing bushing; 36. Sealing ring; 37. Card plate;

[0032] 4. Guide ring. DETAILED DESCRIPTION

[0033] In order to make the objectives, technical solutions and advantages of the present disclosure more clear, the embodiments of the present disclosure will be further described in detail below with reference to the accompanying drawings.

[0034] The present disclosure provides a pressure test device, such as Figure 1 As shown, the pressure test device includes a sealed tank body 1, a moving component 2 and a sealing component 3.

[0035] The sealed can body 1 has a sealed cavity 10 for accommodating electronic devices therein. The sealed can body 1 has an air inlet 101 , which is communicated with the sealed cavity 10 .

[0036] The first part of the motion component 2 is located inside the sealed tank 1 and is used to connect with the electronic device. The second part of the motion component 2 is located outside the sealed tank 1 and is used to connect with the driving device. The motion component 2 can move relative to the sealed tank 1. The first part of the motion component 2 is connected to the second part of the motion component 2.

[0037] The sealing component 3 is sandwiched between the moving component 2 and the sealed tank body 1 and connected to the sealed tank body 1 . The sealing component 3 is used to seal the moving component 2 and the sealed tank body 1 .

[0038] When the pressure test device provided by the embodiment of the present disclosure is used to perform a pressure test on an electronic device, since the pressure test device includes a sealed tank body 1, and an air inlet 101 is provided in the sealed tank body 1, and the air inlet 101 is connected to the sealed cavity 10, water or other liquids can be added to the sealed cavity 10 before the test, and then the electronic device to be tested is placed in the sealed cavity 10 for testing. If the pressure in the sealed cavity 10 does not meet the test conditions, the sealed cavity 10 can be pressurized through the air inlet 101 until the pressure in the sealed cavity 10 can meet the test requirements.

[0039] Since the pressure test device includes the moving component 2, the first part of the moving component 2 is located in the sealed tank body 1, and the second part of the moving component 2 is located outside the sealed tank body 1, and the moving component 2 can move relative to the sealed tank body 1. In this way, when conducting the test, the electronic device that needs to move can be connected to the first part of the moving component 2, so that the electronic device can be driven to move through the moving component 2, and then the pressure resistance performance of the electronic device in the moving state can be tested.

[0040] Moreover, since the pressure test device further includes a sealing component 3, the sealing component 3 is located between the moving component 2 and the sealed tank body 1, and the sealing component 3 is connected to the sealed tank body 1, and the sealing component 3 is used to seal the moving component 2 and the sealed tank body 1. In this way, when the moving component 2 drives the electronic device to move during the test, the moving component 2 and the sealed tank body 1 can be sealed by the sealing component 3, so as to prevent the pressure release of the sealed chamber 10 due to the movement of the moving component 2 during the test, thereby improving the detection accuracy of the pressure test.

[0041] It can be seen that the above withstand voltage test device can not only perform withstand voltage test on electronic devices in a static state, but also perform withstand voltage test on electronic devices in a moving state, and can meet the testing needs of electronic devices in different situations.

[0042] Figure 2 yes Figure 1 The cross-sectional view along the AA direction, combined with Figure 2 Optionally, the motion component 2 is a movable rod 21, which is inserted into the sealed tank body 1, and the first end of the movable rod 21 is used to connect with the electronic device, and the second end of the movable rod 21 is used to connect with the driving device.

[0043] The movable rod 21 can move along its own axis or rotate around its own axis under the drive of the driving device. The cross section of the movable rod 21 is circular.

[0044] In the above implementation, the motion component 2 is set as the movable rod 21, and the motion component 2 can move linearly and rotate relative to the sealed tank 1 in the form of a rod, thereby realizing different motion states of the electronic device. Moreover, the movable rod 21 is also convenient to be connected to the electronic device and the driving device respectively.

[0045] In the disclosed embodiment, the movable rod 21 is a metal structural member, and the surface roughness of the movable rod 21 is required to be less than Ra0.8, so as to reduce the friction between the movable rod 21 and the sealed tank body 1, and facilitate the relative movement of the movable rod 21 to the sealed tank body 1.

[0046] The first end of the movable rod 21 located in the sealed tank body 1 is designed with a mounting interface. The mounting interface is used to connect with an electronic device.

[0047] The mounting interface may be a groove, a threaded section, a step with a plane, etc. As long as it is convenient to connect with the electronic device, the mounting interface may be of any structure.

[0048] In other examples, the motion component 2 may also be other structures, for example, a structure with a connecting ball. The connecting ball is connected to the sealed tank body 1 in a ball joint manner. The connecting rods for connecting to the electronic device and the driving device are respectively connected to the opposite sides of the connecting ball. The driving device drives the connecting ball to swing, thereby driving the electronic device to swing.

[0049] Alternatively, the motion component 2 is a rod with a square cross section, etc. The square rod drives the electronic device to move linearly.

[0050] That is to say, the structure of the motion component 2 can be flexibly set according to the motion form required by the connected electronic device. The present disclosure does not limit this. The motion form of the motion component 2 can include linear motion, rotation, swing, etc.

[0051] Figure 3 yes Figure 2 Schematic diagram of the structure of the sealing component, combined with Figure 3 Optionally, the pressure test device further includes a guide ring 4, which is sleeved outside the movable rod 21 and located in the sealing assembly 3, and the guide ring 4 and the movable rod 21 are clearance-matched.

[0052] In the above implementation, the guide ring 4 is used to limit and guide the movable rod 21 so that the movable rod 21 can move in the guide ring 4 .

[0053] Optionally, the sealing assembly 3 includes a sealing end plate 31, a stuffing box 32 and a sealing stuffing 33. The sealing end plate 31 and the stuffing box 32 are sequentially arranged along the axis direction of the movable rod 21 and sleeved outside the movable rod 21, and the sealing end plate 31 is located outside the sealed tank body 1.

[0054] The stuffing box 32 is partially located in the sealed tank body 1 , and the stuffing box 32 is connected to the sealed end plate 31 , and the stuffing box 32 and the sealed end plate 31 form a stuffing cavity 320 . The sealing stuffing 33 is filled in the stuffing cavity 320 .

[0055] In the above implementation, the stuffing box 32 is used to provide a mounting base for the sealing stuffing 33 , so that the sealing stuffing 33 can be installed between the movable rod 21 and the sealing tank body 1 .

[0056] The sealing filler 33 is used to be installed between the movable rod 21 and the sealed tank body 1 so as to seal between the movable rod 21 and the sealed tank body 1 .

[0057] The sealing end plate 31 is used to seal the stuffing box 32 on one hand, and is also used to squeeze the sealing stuffing 33 in the stuffing box 32 on the other hand, so that the sealing stuffing 33 can be deformed to seal between the movable rod 21 and the sealed tank body 1.

[0058] Optionally, the sealing end plate 31 has a first inclined surface 3101 on one side facing the sealing filler 33 , and the first inclined surface 3101 is inclined toward the sealing filler 33 along the radial outward direction of the movable rod 21 .

[0059] In the above implementation, since the first inclined surface 3101 is inclined toward the sealing filler 33 along the radial outward direction of the movable rod 21, when the sealing end plate 31 and the stuffing box 32 are locked, the sealing filler 33 will be squeezed along the first inclined surface 3101 toward the movable rod 21, so that the sealing filler 33 can be tightly filled between the sealing tank body 1 and the movable rod 21, thereby improving the sealing between the sealing tank body 1 and the movable rod 21.

[0060] Optionally, the stuffing box 32 has a second inclined surface 3201 inside, the second inclined surface 3201 is arranged opposite to the first inclined surface 3101, and the second inclined surface 3201 is inclined in the opposite direction to the first inclined surface 3101. A sealing stuffing 33 is provided between the second inclined surface 3201 and the first inclined surface 3101.

[0061] In the above implementation, the provision of the second inclined surface 3201 can further improve the sealing performance between the sealed tank body 1 and the movable rod 21 .

[0062] Optionally, the sealing assembly 3 further comprises a sealing bushing 35 , which is located between the stuffing box 32 and the movable rod 21 in the radial direction of the movable rod 21 , and the sealing bushing 35 and the stuffing box 32 are clamped together.

[0063] The sealing bushing 35 is a ring sleeve that acts as a cushion. The sealing bushing 35 is located inside the stuffing box 32. Since the movable rod 21 can move relative to the sealing tank body 1 and the stuffing box 32. Therefore, the stuffing box 32 will be worn due to long-term wear between the movable rod 21 and the sealing tank body 1 and the stuffing box 32. When the stuffing box 32 is worn due to long-term wear between the movable rod 21 and the stuffing box 32, it is necessary to replace the stuffing box 32. Therefore, designing the sealing bushing 35 in the stuffing box 32 can reduce the wear between the movable rod 21 and the stuffing box 32. When the sealing bushing 35 is worn to a certain extent, it can be replaced, and the cost of replacing the stuffing box 32 can also be reduced.

[0064] Exemplarily, the sealing bushing 35 is made of a material with relatively low hardness and relatively good wear resistance, such as corrosion-resistant materials such as polytetrafluoroethylene or graphite.

[0065] Generally speaking, there is a clearance fit between the sealing bushing 35 and the movable rod 21. The sealing bushing 35 and the stuffing box 32 are interference fit.

[0066] Optionally, the sealing assembly 3 further includes two sealing rings 36 , one of which is clamped between the stuffing box 32 and the sealed tank body 1 , and the other of which is clamped between the stuffing box 32 and the sealing bushing 35 .

[0067] In the above implementation, sealing rings 36 are respectively clamped between the stuffing box 32 and the sealed tank body 1 and between the stuffing box 32 and the sealing bushing 35. The sealing rings 36 can further improve the sealing between the stuffing box 32 and the sealed tank body 1 and between the stuffing box 32 and the sealing bushing 35.

[0068] In order to facilitate the installation of the sealing ring 36, a sealing groove for accommodating the sealing ring 36 is provided in the stuffing box 32, and the opening of the sealing groove faces the sealing tank body.

[0069] The outer wall of the sealing bushing 35 is provided with a sealing groove for accommodating the sealing ring 36 .

[0070] The sealing rings 36 mentioned above are all O-type rubber sealing rings.

[0071] In the disclosed embodiment, in order to facilitate the installation of the sealing bushing 35, a clamping plate 37 is provided in the stuffing box 32, and the clamping plate 37 is accommodated in the stuffing box 32, and a concave groove is formed between the clamping plate 37 and the stuffing box 32. One end of the sealing bushing 35 is placed in the concave groove and is clamped together with the stuffing box 32.

[0072] In addition, in order to further limit the movement or rotation of the movable rod 21 , a guide ring 4 may also be installed in the sealing bushing 35 , wherein the guide ring 4 installed in the sealing bushing 35 also has a clearance fit with the movable rod 21 .

[0073] In the disclosed embodiment, the stuffing box 32 includes a flange 321 and a box body 322. In the axial direction of the movable rod 21, the flange 321 is sleeved outside the outer wall of the box body 322 close to the sealing end plate 31, and is connected to the box body 322. The flange 321 is used to be connected to the sealing end plate 31. The side of the flange 321 away from the sealing end plate 31 has a positioning stop, and the positioning stop is used to be positioned and assembled with the sealed tank body 1.

[0074] The box body 322 is sleeved outside the movable rod 21. The middle part of the inner wall of the box body 322 has an inner flange 3221, and the inner flange 3221 is loosely matched with the movable rod 21. One of the sealing rings 36 is clamped between the inner flange 3221 and the movable rod 21. A packing cavity 320 is defined between the inner flange 3221, the movable rod 21 and the sealing end plate 31. The second inclined surface 3201 is located on the side of the inner flange 3221 facing the sealing end plate 31. The clamping plate 37 and the sealing bushing 35 are both located in the end of the box body 322 away from the sealing end plate 31.

[0075] The stuffing box 32 is configured as the above structure, and can be connected to the sealing end plate 31 through the flange 321, so that the sealing stuffing 33 can be squeezed through the sealing end plate 31. At the same time, the box body 322 can also provide an installation space for the sealing stuffing 33.

[0076] Optionally, the sealing end plate 31 comprises an outer ring 311 and a shaft sleeve 312, wherein the outer ring 311 is sleeved outside the shaft sleeve 312 and connected to the shaft sleeve 312. The outer ring 311 is used to be connected to the stuffing box 32.

[0077] Along the axis direction of the movable rod 21, the shaft sleeve 312 protrudes on the side of the outer ring 311 facing the stuffing box 32. The first inclined surface 3101 is located on the end surface of the shaft sleeve 312 facing the stuffing box 32. The shaft sleeve 312 is sleeved outside the movable rod 21.

[0078] The inner wall of the sleeve 312 has an annular oil groove 3120, along the axis direction of the movable rod 21, one end of the oil groove 3120 is located on the end surface of the sleeve 312 away from the stuffing box 32, and the other end of the oil groove 3120 is located in the middle of the sleeve 312. The end of the sleeve 312 facing the stuffing box 32 is loosely matched with the movable rod 21.

[0079] The arrangement of the oil groove 3120 can reduce the contact area between the shaft sleeve 312 and the movable rod 21 , and lubricating grease or the like can be added to the oil groove 3120 to reduce the friction and heat of the movable rod 21 during the movement.

[0080] Exemplarily, the stuffing box 32 and the sealing end plate 31 are both integral structures, which can improve the manufacturing efficiency.

[0081] See again Figure 1Optionally, the sealed tank body 1 includes a cylinder cover 11, a cylinder body 12 and an adapter plate 13. The cylinder body 12 is sealed and connected to the top of the cylinder cover 11, and forms a sealed chamber 10 with the cylinder body 12.

[0082] The adapter plate 13 is located in the cylinder head 11 and connected to the cylinder head 11. The adapter plate 13 is used to electrically connect to the electronic device in the sealed chamber 10. The adapter plate 13 is used to input signals to the electronic device or output signals from the electronic device.

[0083] In the above implementation, the cylinder head 11 is used to define a sealed chamber 10 together with the cylinder body 12 so that a high-pressure environment can be formed inside the sealed tank body 1.

[0084] The adapter board 13 is used to input or output signals so that the electronic device can work normally in a high-voltage environment to realize the detection of the working state.

[0085] That is to say, the function of the adapter board 13 is to transfer the detection signal (that is, the output signal) of the electronic device (such as a pressure sensor or a displacement sensor) through the aviation plug, and is also used to connect the control signal to the electronic device (such as a pressure sensor or a displacement sensor).

[0086] In the disclosed embodiment, in order to improve the sealing between the adapter plate 13 and the cylinder head 11, the adapter plate 13 and the cylinder head 11 are sealed by an O-ring, and the adapter plate 13 is press-fitted into the cylinder head 11 by means of screws, spring washers and flat washers.

[0087] Optionally, the cylinder head 11 includes a cover plate 111 , a plurality of ribs 112 and a reinforcement ring 113 , wherein the plurality of ribs 112 are connected to a surface of the cover plate 111 away from the cylinder body 12 at intervals. The reinforcement ring 113 is sleeved outside the cover plate 111 .

[0088] In the above implementation, the rib plate 112 and the reinforcement ring 113 are used to strengthen the rigidity of the cylinder head 11 to ensure that the cylinder head 11 does not undergo significant deformation under high pressure conditions, thereby preventing the cylinder head 11 from failing in sealing.

[0089] Exemplarily, the rib plate 112 is a trapezoidal plate, and there are eight rib plates 112. The eight rib plates 112 are arranged circumferentially with the center of the cover plate 111 as the center. In this way, the eight rib plates 112 can be distributed on the cover plate 111 as evenly as possible, thereby improving the overall strength of the cylinder head 11.

[0090] The adapter plate 13 is located at the center of the cover plate 111 , so that electronic devices at different positions in the sealed cavity 10 can be easily connected to the adapter plate 13 .

[0091] The air inlet 101 is located near the edge of the cover plate 111 , and an air inlet plug is installed in the air inlet 101 . The air inlet plug can close the air inlet 101 .

[0092] The cover plate 111 is also provided with an exhaust hole 102. An air inlet plug is installed in the exhaust hole 102. The exhaust plug can close the exhaust hole 102. The exhaust hole 102 is used to discharge the gas in the sealed tank body 1.

[0093] The cover plate 111 is also provided with an interface for installing a pressure gauge. The pressure gauge is a precision pressure gauge with a range of 16 MPa, which is used to read the pressure in the sealed cavity 10.

[0094] Optionally, the cylinder body 12 includes a barrel 121, a bottom plate 122, an outer flange 123 and a plurality of supports 124. The bottom plate 122 is located at the bottom end of the barrel 121 and connected to the barrel 121. The outer flange 123 is sleeved outside the top end of the barrel 121 and is used to be connected to the cylinder head 11.

[0095] A plurality of supports 124 are spaced apart and located on a surface of the bottom plate 122 away from the cylinder 121, and are all connected to the bottom plate 122. The supports 124 are used to support the cylinder 121. The sealing assembly 3 is located in the side wall of the cylinder 121.

[0096] In the embodiment of the present disclosure, there are three supports 124 , and the three supports 124 are arranged in a triangle, so that the stability of the triangle can be used to stably support the bottom plate 122 .

[0097] Optionally, a mounting groove for mounting an O-ring is provided on the outer flange 123 , and an opening of the mounting groove faces the cylinder head 11 .

[0098] In order to facilitate the connection between the cylinder body 12 and the cylinder head 11 , the outer flange 123 is provided with a plurality of through holes at even intervals along its circumference. The axial direction of each through hole is the same as the axial direction of the cylinder body 121 .

[0099] Correspondingly, the cylinder head 11 is evenly spaced along its circumference and is provided with connection holes corresponding to the plurality of through holes. A fastener is connected to each through hole and the corresponding connection hole, so that the cylinder head 11 and the cylinder body 12 can be connected together.

[0100] Fasteners may include bolts, washers, nuts, etc.

[0101] Exemplarily, the number of through holes and the number of connecting holes are both 16.

[0102] In other examples, the number of through holes and connecting holes can be any number, such as 8, 10, etc.

[0103] In the disclosed embodiment, in order to facilitate the installation of the electronic components in the cylinder body 12 , a plurality of mounting plates are provided inside the cylinder body 121 , and the mounting plates are used to be connected to the electronic components.

[0104] The bottom of the cylinder 121 is also provided with a drainage hole 103. The drainage hole 103 is used to discharge the water in the sealed cavity 10. A drainage screw plug is installed in the drainage hole 103, and the drainage screw plug is used to block the drainage hole 103.

[0105] Optionally, the sealed tank body 1 further comprises a partition 15, which is located in the sealed chamber 10 and connected to the cylinder body 12, and the partition 15 can divide the sealed chamber 10 into a plurality of test areas. At least one of the plurality of test areas has a moving component 2.

[0106] In the above implementation, the partition 15 is used to divide the sealed cavity 10 into a plurality of test areas, and the plurality of test areas can be used to test different types of electronic devices.

[0107] Multiple test areas can be divided according to static and dynamic. Some of the test areas are static test areas, that is, they are used to test stationary electronic devices. Other test areas are dynamic test areas, that is, they are used to test moving electronic devices.

[0108] The dynamic test area can be divided into a linear motion test area and a rotational motion test area. The linear motion test area is used to test electronic devices that perform linear motion, while the rotational motion test area is used to test electronic devices that perform rotational motion.

[0109] In the disclosed embodiment, the number and shape of the partitions 15 can be flexibly set according to actual needs.

[0110] The working process of the pressure test device provided by the embodiment of the present disclosure is introduced below:

[0111] First, the electronic components are installed in the cylinder body 12. For example, the displacement sensor is fixed on the mounting plate in the cylinder body 12 and fixed with standard fasteners. The displacement sensor is connected to the adapter plate 13 through a sensor cable.

[0112] Next, connect the movable joint of the displacement sensor to the first end of the movable rod 21, connect the second end of the movable rod 21 to the driving device, install the drain plug in the cylinder body 12, install the exhaust plug and the intake plug in the cylinder head 11, and install a precision pressure gauge with a range of 16MPa to facilitate reading the pressure in the cylinder body 12.

[0113] Then the electric pump is inserted into the cylinder body 12 through a rubber hose to fill water into the cylinder body 12. After the water is filled, the cylinder cover 11 and the cylinder body 12 are connected together.

[0114] After confirming that the equipment is well assembled, start the driving device, the movable rod 21 drives the displacement sensor to move, and the test is carried out in accordance with Appendix B of CB / T4387-2013. The test pressure and time are carried out in accordance with B.2 Sequence 1 to 4 of the standard. After the test, take out the components or parts to check the relevant performance.

[0115] The above description is only an optional embodiment of the present disclosure and is not intended to limit the present disclosure. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present disclosure shall be included in the protection scope of the present disclosure.

Claims

1. A pressure test device, characterized in that: The pressure test device comprises a sealed tank body (1), a moving component (2) and a sealing component (3); The sealed can body (1) has a sealed cavity (10) for accommodating electronic devices, and the sealed can body (1) has an air inlet (101), and the air inlet (101) is in communication with the sealed cavity (10); The first part of the moving component (2) is located inside the sealed can (1) and is used to connect with the electronic device, the second part of the moving component (2) is located outside the sealed can (1), the moving component (2) is able to move relative to the sealed can (1), and the first part is connected to the second part; The sealing component (3) is located between the moving component (2) and the sealed tank body (1), and the sealing component (3) is connected to the sealed tank body (1).

2. The pressure test device according to claim 1, characterized in that: The motion component (2) is a movable rod (21), which is inserted into the sealed tank body (1), and the first end of the movable rod (21) is used to be connected to the electronic device, and the second end of the movable rod (21) is used to be connected to a driving device. When driven by the driving device, the movable rod (21) can move along its own axis or rotate around its own axis.

3. The pressure test device according to claim 2, characterized in that: The pressure test device further comprises a guide ring (4), the guide ring (4) being sleeved outside the movable rod (21) and being located in the sealing assembly (3), the guide ring (4) being in clearance fit with the movable rod (21).

4. The pressure test device according to claim 2, characterized in that: The sealing assembly (3) comprises a sealing end plate (31), a stuffing box (32) and a sealing stuffing (33); The sealing end plate (31) and the stuffing box (32) are sequentially sleeved outside the movable rod (21) along the axial direction of the movable rod (21), and the sealing end plate (31) is located outside the sealed tank body (1), and the stuffing box (32) is partially located in the sealed tank body (1). The stuffing box (32) is connected to the sealing end plate (31), and the stuffing box (32) and the sealing end plate (31) form a stuffing cavity (320); The sealing filler (33) is filled in the filler cavity (320).

5. The pressure test device according to claim 4, characterized in that: The sealing end plate (31) has a first inclined surface (3101) on one side facing the sealing filler (33), and the first inclined surface (3101) is inclined toward the sealing filler (33) along the radial outward direction of the movable rod (21).

6. The pressure test device according to claim 5, characterized in that: The stuffing box (32) has a second inclined surface (3201), the second inclined surface (3201) is arranged opposite to the first inclined surface (3101), and the second inclined surface (3201) and the first inclined surface (3101) have an inclination direction opposite to each other; The filling cavity (320) is between the second inclined surface (3201) and the first inclined surface (3101).

7. The pressure test device according to claim 4, characterized in that: The sealing assembly (3) further comprises a sealing bushing (35), wherein the sealing bushing (35) is located between the stuffing box (32) and the movable rod (21) in the radial direction of the movable rod (21).

8. The pressure test device according to claim 7, characterized in that: The sealing assembly (3) further comprises two sealing rings (36), one of which is clamped between the stuffing box (32) and the sealing tank body (1), and the other of which is clamped between the stuffing box (32) and the sealing bushing (35).

9. The pressure test device according to any one of claims 1 to 8, characterized in that: The sealed tank body (1) comprises a cylinder cover (11), a cylinder body (12) and an adapter plate (13); The cylinder body (12) is sealingly connected to the top of the cylinder cover (11), and forms the sealed chamber (10) with the cylinder body (12); The adapter plate (13) is located in the cylinder cover (11) and is connected to the cylinder cover (11); the adapter plate (13) is used to be electrically connected to the electronic device in the sealed cavity (10).

10. The pressure test device according to claim 9, characterized in that: The sealed tank body (1) further comprises a partition (15), wherein the partition (15) is located in the sealed chamber (10) and is connected to the cylinder body (12), and the partition (15) is used to divide the sealed chamber (10) into a plurality of test areas, at least one of the plurality of test areas having the moving component (2).

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