CN113466050B - A hydrostatic test device for sensor housing - Google Patents
A hydrostatic test device for sensor housing Download PDFInfo
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- CN113466050B CN113466050B CN202110710067.4A CN202110710067A CN113466050B CN 113466050 B CN113466050 B CN 113466050B CN 202110710067 A CN202110710067 A CN 202110710067A CN 113466050 B CN113466050 B CN 113466050B
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- 238000012360 testing method Methods 0.000 title claims abstract description 63
- 230000002706 hydrostatic effect Effects 0.000 title claims description 20
- 238000007689 inspection Methods 0.000 claims abstract description 59
- 238000007789 sealing Methods 0.000 claims abstract description 14
- 239000007788 liquid Substances 0.000 claims description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 21
- 238000001514 detection method Methods 0.000 description 10
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 238000005086 pumping Methods 0.000 description 4
- 238000013461 design Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 208000010392 Bone Fractures Diseases 0.000 description 1
- 206010017076 Fracture Diseases 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
- G01N3/10—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by pneumatic or hydraulic pressure
- G01N3/12—Pressure testing
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
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- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The invention discloses a water pressure test device for a sensor shell, which belongs to the technical field of pressure tests and comprises a cuboid-shaped test box body, a press platform and a door cover; the inspection box body is arranged on a press platform, and a pressing frame for pressing and sealing the door cover and the inspection box body is arranged on the upper side of the press platform through a downward-pressing telescopic cylinder; the door cover is provided with a connector connected with the sensor shell; the inspection cavity is formed in the inspection box body, an oil bag is arranged in the inspection cavity, and the oil bag is connected with an oil pressurizing device through an oil pipe. The sensor shell is in threaded sealing connection with the connector, and the pressing frame is driven to press the door cover downwards through the pressing telescopic cylinder, so that the door cover is sealed with the inspection box body; the oil pressurizing device controls the volume of oil in the oil bag, controls the hydraulic pressure in the checking cavity, and realizes the high-efficiency hydraulic pressure test on the sensor shell; the testing pressure can be automatically controlled by controlling the volume of the oil bag, so that the flexibility is good, the applicability range is wide, and the universality is strong; simple structure and easy realization.
Description
Technical Field
The invention belongs to the technical field of pressure tests, and particularly relates to a water pressure test device for a sensor shell.
Background
A pressure transducer is a device that converts pressure into a pneumatic or electric signal for control and remote transmission. The sensor can convert physical pressure parameters such as gas, liquid and the like sensed by the load cell sensor into standard electric signals so as to supply secondary instruments such as an indication alarm instrument, a recorder, a regulator and the like to carry out measurement, indication and process adjustment.
According to requirements, the shells of the sensors for engineering machinery, mining machinery and hydraulic equipment are required to be subjected to pressure resistance tests so as to ensure that the shells have explosion-proof performance. The sensor is used for detecting the working pressure of a hydraulic circuit and the like, is generally connected with a checking device through external threads and internal threads, and does not need to change a shell structure or use a transition device in the detection process.
In the prior art, the pressure test of a small-sized explosion-proof or explosion-proof intrinsic safety type sensor shell, in particular to a pressure transmitter shell, mainly depends on a plurality of general-purpose test devices, but the conventional test devices have the problems of low test efficiency, repeated manual disassembly, water pressure filling and discharging and the like, and seriously influence the operation efficiency. In addition, in the test process, the test object needs to be observed manually, and if the pressure resistance of the sensor housing is poor, the sensor housing may be broken to hurt people.
Disclosure of Invention
In order to solve the problem that the existing sensor shell hydrostatic test device is low in test efficiency, repeated manual disassembly, filling and discharging water pressure are needed; and there is the dangerous problem of fracture injury, the invention provides a hydrostatic test device for the sensor shell.
The invention is realized by the following technical scheme.
A hydrostatic test device for a sensor housing comprises a test box body, a press platform and a door cover; the inspection box body is arranged on the press platform, and a pressing frame for pressing and sealing the door cover and the inspection box body is arranged on the upper side of the press platform through a downward-pressing telescopic cylinder; the door cover is provided with a plurality of connectors connected with the sensor shell; the inspection cavity formed in the inspection box body is internally provided with an oil bag, and the oil bag is connected with an oil pressurizing device through an oil pipe. The plurality of sensor shells to be detected are connected to the connector in a threaded sealing manner and extend out through the downward-pressing telescopic cylinder, so that the pressing frame is driven to press the door cover downward, and the door cover and the inspection box body are completely sealed; the volume of oil in the oil bag is controlled through the oil pressurizing device, so that the control of the inspection water pressure in the inspection cavity is realized, the high-efficiency water pressure test of the sensor shell is realized, the pressure resistance of a plurality of sensor shells can be inspected at the same time, and the high efficiency of the water pressure test is ensured; the testing pressure can be automatically controlled by controlling the volume of the oil bag, so that the flexibility is good, the applicability range is wide, and the universality is strong; simple structure and easy realization.
The invention further improves the invention and also comprises a liquid level adjusting device for adjusting the liquid level in the inspection cavity.
The invention further improves that the liquid level adjusting device comprises a bracket and a pushing telescopic cylinder fixedly arranged on the bracket; one side of the inspection box body is communicated with a propulsion pipeline; the cylinder shaft end of the pushing telescopic cylinder is provided with a piston which is inserted into the pushing pipeline in a sliding way. The piston at the shaft end of the telescopic cylinder is controlled to push in the pushing pipeline, so that the liquid level height and the emptying gas in the inspection cavity can be flexibly adjusted, the accuracy of the hydrostatic test is ensured, the repeated pumping of water in the inspection cavity can be avoided, the operation is convenient, and the test efficiency is improved.
The invention further improves that a stepped valve cavity is formed in the connector, and a valve core is slidably arranged in the valve cavity; the lower side of the connector is provided with a channel I which is communicated with the inspection cavity and the small opening end of the valve cavity, the upper side of the connector is provided with a channel II, and the channel II is communicated with the large opening end of the valve cavity through a channel III; the upper end of the channel II is communicated with a mounting groove for sealing and mounting the sensor shell; a valve core top groove communicated with the channel I is formed in the valve core; a spring for pushing the valve core towards the direction of the thin end of the valve core is arranged in the valve cavity; the valve core is pushed by the spring force or the pressure difference between the two ends of the valve core, and the valve core top groove is communicated with or disconnected from the channel II. When the tested sensor shell is well sealed and does not leak, the valve core is communicated with the two ends of the channel I, the valve core top groove, the channel II, the channel III and the valve cavity under the elasticity of the spring, so that hydraulic balance is realized, as shown in the figure; when the detected sensor shell has problem of leakage, the pressure at the two ends of the valve core is unbalanced, the pressure at the position of the channel II is smaller than the pressure at the position of the channel I, namely the pressure at the left end of the valve core is larger than the pressure at the right end of the valve core, and the valve core is pushed to move right through the hydraulic pressure difference, so that the valve core top groove and the channel II are disconnected, and as shown in the figure, the pressure release automatic closing function is realized, so that the normal hydraulic pressure in the detection cavity is ensured, the normal and accurate detection of other sensor shells is ensured, and the reliability is good; the connector is simple in structure and good in practicality, and normal detection of a plurality of sensor shells is effectively guaranteed. When the liquid level of the inspection cavity drops, the valve core is reset under the elasticity of the spring.
The invention further improves that the valve core is provided with a valve core channel; one end of the valve core channel is arranged on the end face of the thin end of the valve core, and the other end of the valve core channel is arranged on the side face of the thin end of the valve core, which is close to one end of the thick end of the valve core. The hydraulic stress areas on the two sides of the valve core are guaranteed to be the same, and the balance of the valve core is better during normal detection.
According to a further improvement of the invention, a valve core bottom groove communicated with the channel I is formed on the lower side of the valve core thin end, and the valve core bottom groove extends to the end face of the valve core thin end. The valve core bottom groove is communicated with the channel I, the small opening end of the valve cavity and the valve core channel, so that the valve is simple in structure, reasonable in design and easy to realize.
In addition, the invention further improves that a valve core side groove which is communicated with the valve core bottom groove and the valve core top groove is formed on the side surface of the valve core. The valve core side groove is simple to process and easy to realize.
The invention further improves that the press platform comprises an upper cross beam, an upright post and a lower cross beam which are sequentially connected from top to bottom; a positioning seat is arranged on the lower cross beam, and a limiting block for adjusting and positioning the inspection box body is arranged on the positioning seat; the vertical fixed mounting of push down flexible jar is in on the entablature, the space of keeping away the position to the sensor housing has been seted up to the pressure frame downside. The press platform has the advantages of simple and stable structure, strong universality and good practicability.
The invention further improves, also comprises a retraction device and a sucker; the retraction device comprises a chassis, a support column and a retraction telescopic cylinder which are sequentially connected from bottom to top; the retractable telescopic cylinder is rotationally connected with the support column through an oil cylinder seat, and the sucker is arranged at the cylinder shaft end of the retractable telescopic cylinder and used for adsorbing and transferring the door cover. The door cover to be detected and the door cover after detection can be flexibly installed and disassembled through the sucker, the door cover can be quickly and efficiently replaced, and the inspection operation efficiency is improved.
A further development of the invention provides that a pressure gauge is arranged outside the test chamber, which pressure gauge communicates with the test cavity. The hydraulic pressure in the checking cavity is visually and accurately displayed through the pressure gauge.
From the technical scheme, the beneficial effects of the invention are as follows: the plurality of sensor shells to be detected are connected to the connector in a threaded sealing manner and extend out through the downward-pressing telescopic cylinder, so that the pressing frame is driven to press the door cover downward, and the door cover and the inspection box body are completely sealed; the volume of oil in the oil bag is controlled through the oil pressurizing device, so that the control of the inspection water pressure in the inspection cavity is realized, the high-efficiency water pressure test of the sensor shell is realized, the pressure resistance of a plurality of sensor shells can be inspected at the same time, and the high efficiency of the water pressure test is ensured; the testing pressure can be automatically controlled by controlling the volume of the oil bag, so that the flexibility is good, the applicability range is wide, and the universality is strong; the liquid level height and the air evacuation in the inspection cavity can be flexibly adjusted through the liquid level adjusting device, the accuracy of the hydrostatic test is ensured, the repeated pumping of water in the inspection cavity can be avoided, the operation is convenient, and the test efficiency is improved; the door cover can be replaced quickly, flexibly and efficiently through the retraction device.
Drawings
In order to more clearly illustrate the technical solutions of the present invention, the drawings that are needed in the description will be briefly introduced below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Fig. 2 is a schematic side view of a press platform according to an embodiment of the present invention.
Fig. 3 is a schematic view of a positioning seat according to an embodiment of the invention.
Fig. 4 is a schematic view of a connector according to an embodiment of the present invention.
Fig. 5 is a schematic view of a connector in a leakage state according to an embodiment of the present invention.
Fig. 6 is a schematic top view of a valve core according to an embodiment of the present invention.
In the accompanying drawings: 1. the liquid level adjusting device comprises a liquid level adjusting device, 11, a bracket, 12, a pushing telescopic cylinder, 121, a piston, 2, a checking box body, 21, a pushing pipeline, 22, a checking cavity, 23, an oil pipe, 24, an oil bag, 25, a pressure gauge, 3, a press platform, 31, a pressing frame, 32, a pressing telescopic cylinder, 33, an upper beam, 34, a lower beam, 35, a stand column, 36, a positioning seat, 37, a limiting block, 4, a door cover, 41, a connector, 411, a valve core, 412, a valve cavity, 413, a spring, 414, a channel I, 415, a channel II, 416, a valve core channel, 417, a valve core bottom groove, 418, a valve core top groove, 419, a channel III, 420, a valve core side groove, 42, a deflation device, 5, a sucker, 6, a retraction device, 61, a retraction telescopic cylinder, 62, an oil cylinder seat, 63, a support column, 64, a chassis, 7, a hydraulic pipeline, 8 and a hydraulic pump station.
Detailed Description
In order to make the objects, features and advantages of the present invention more obvious and understandable, the technical solutions of the present invention will be clearly and completely described below with reference to the drawings in this specific embodiment, and it is apparent that the embodiments described below are only some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, based on the embodiments in this patent, which would be within the purview of one of ordinary skill in the art without the particular effort to make the invention are intended to be within the scope of the patent protection.
As shown in fig. 1, the invention discloses a hydrostatic test device for a sensor housing, which comprises a rectangular box-shaped test body 2 with an upper opening, a press platform 3 and a door cover 4; the inspection box body 2 is arranged on the press platform 3, a pressing frame 31 for pressing and sealing the door cover 4 and the inspection box body 2 is arranged on the upper side of the press platform 3 through a downward-pressing telescopic cylinder 32, and a sealing gasket is arranged between the inspection box body 2 and the door cover 4, so that a good sealing effect is ensured; the door cover 4 is provided with a plurality of connectors 41 which are in threaded connection with the sensor shell in an array manner; the inspection cavity 22 for water injection is formed in the inspection box body 2, an oil bag 24 is arranged in the inspection cavity 22, and the oil bag 24 is connected with an oil pressurizing device through an oil pipe 23 positioned on the side wall of the inspection box body 2.
The plurality of sensor shells to be detected are connected to the connector 41 in a threaded sealing manner, and extend out through the pushing-down telescopic cylinder 32, so that the pressing frame 31 is driven to push down the door cover 4, and the door cover 4 and the inspection box body 2 are completely sealed; the volume of oil in the oil bag 24 is controlled by the oil pressurizing device, so that the control of the inspection water pressure in the inspection cavity 22 is realized, the high-efficiency water pressure test of the sensor shell is realized, the pressure resistance of a plurality of sensor shells can be inspected at the same time, and the high efficiency of the water pressure test is ensured; the testing pressure can be automatically controlled by controlling the volume of the oil bag 24, so that the flexibility is good, the applicability range is wide, and the universality is strong; simple structure and easy realization.
The hydrostatic test device for a sensor housing further comprises a liquid level adjustment device 1 for adjusting the liquid level in the test cavity 22.
As shown in fig. 1-2, wherein the liquid level adjusting device 1 comprises a bracket 11 and a pushing telescopic cylinder 12 transversely and fixedly arranged on the bracket 11; a propulsion pipeline 21 is communicated with one side of the inspection box body 2; the cylinder shaft end of the pushing telescopic cylinder 12 is provided with a piston 121 which is inserted into the pushing pipeline 21 in a sliding way. The piston 121 at the cylinder shaft end of the pushing telescopic cylinder 12 is controlled to push in the pushing pipeline 21, so that the liquid level height and the air exhaust in the inspection cavity 22 can be flexibly adjusted, the accuracy of the hydrostatic test is ensured, the repeated pumping of water in the inspection cavity 22 can be avoided, the operation is convenient, and the test efficiency is improved.
As shown in fig. 4-5, a stepped valve cavity 412 is formed in the connector 41, and an adapted stepped valve core 411 is slidably disposed in the valve cavity 412; the lower side of the connector 41 is provided with a channel I414 which is communicated with the check cavity 22 and the small opening end of the valve cavity 412, the upper side of the connector 41 is provided with a channel II 415, and the channel II 415 is communicated with the large opening end of the valve cavity 412 through a channel III 419; the upper end of the channel II 415 is communicated with a mounting groove for the threaded sealing mounting of the sensor shell; a valve core top groove 418 communicated with the channel I414 is formed in the upper side of the thin end of the valve core 411; a spring 413 for pushing the valve core 411 toward the thin end is provided in the valve chamber 412. When the tested sensor shell is well sealed and does not leak, the valve core 411 is communicated with the two ends of the channel I414, the valve core top groove 418, the channel II 415, the channel III 419 and the valve cavity 412 under the elasticity of the spring 413, so that hydraulic balance is realized, as shown in fig. 4; when the detected sensor shell has leakage problems, the pressure at the two ends of the valve core 411 is unbalanced, the pressure at the position of the channel II 415 is smaller than the pressure at the position of the channel I414, namely the pressure at the left end of the valve core 411 is larger than the pressure at the right end of the valve core 411, and the valve core 411 is pushed to move right through the hydraulic pressure difference, so that the valve core top groove 418 and the channel II 415 are disconnected, and as shown in fig. 5, the pressure release automatic closing function is realized, so that the normal hydraulic pressure in the detection cavity 22 is ensured, the normal and accurate detection of other sensor shells is ensured, and the reliability is good; the connector 41 is simple in structure and good in practicality, and normal detection of a plurality of sensor shells is effectively guaranteed. When the liquid level of the inspection cavity 22 drops, the valve core 411 is restored under the elastic force of the spring 413.
As shown in fig. 4-5, the valve core 411 is provided with a valve core channel 416; one end of the valve core channel 416 is disposed on the end face of the thin end of the valve core 411, and the other end is disposed on the side face of the thin end of the valve core 411, which is close to the thick end of the valve core 411. The hydraulic stress areas on the two sides of the valve core 411 are guaranteed to be the same, and the balance of the valve core 411 is better during normal detection.
As shown in fig. 4-5, a spool bottom groove 417 communicating with the channel i 414 is formed on the underside of the thin end of the spool 411, and the spool bottom groove 417 extends to the thin end face of the spool 411. The valve core bottom groove 417 is communicated with the channel I414, the small opening end of the valve cavity 412 and the valve core channel 416, so that the valve has the advantages of simple structure, reasonable design and easy realization.
As shown in fig. 6, a spool side groove 420 is provided on the side surface of the spool 411, which communicates the spool bottom groove 417 and the spool top groove 418. The valve core side groove 420 is simple to process and easy to realize.
Wherein, the end face of the big opening end of the valve cavity 412 is provided with a contact type alarm sensor which is respectively connected with a control panel; the control panel numbers each connector 41; when the valve core 411 moves rightwards, the contact type alarm sensor is extruded, the alarm sensor extrudes to send an alarm signal to the control panel, the leakage of the sensor shell to be detected is intuitively and accurately judged through signal coding, a test object is not required to be directly observed by people, the risk of damaging people due to breakage is avoided, and the personal safety is ensured.
As shown in fig. 1, the press platform 3 includes an upper beam 33, an upright post 35 and a lower beam 34, which are sequentially connected from top to bottom; the lower beam 34 is provided with a positioning seat 36, a plurality of transverse and longitudinal crossed slideways are arranged on the upper side of the positioning seat 36, the slideways are in a convex shape, four limiting blocks 37 for clamping and positioning the inspection box body 2 are arranged on the upper side of the positioning seat 36, slotted holes are formed in the limiting blocks 37, the slotted holes are fixedly connected with the slideways through bolts, and the positions of the inspection box body 2 can be flexibly adjusted through unscrewing the bolts, so that the applicability is high. The push-down telescopic cylinder 32 is vertically and fixedly mounted on the upper beam 33, and a avoidance space for avoiding the sensor housing is formed at the lower side of the press frame 31. The press platform 3 has simple and stable structure, strong universality and good practicability.
The hydrostatic test device for the sensor shell also comprises a retraction device 6 and a sucker 5; the retraction device 6 comprises a chassis 64, an oil cylinder seat 62, a support 63 and a retraction telescopic cylinder 61 which are sequentially connected from bottom to top; the retractable telescopic cylinder 61 is vertically and rotatably connected with the cylinder base 62, and the cylinder base 62 is horizontally and rotatably connected with the support 63. The suction cup 5 is arranged at the cylinder shaft end of the retractable cylinder 61 and is used for adsorbing and transferring the door cover 4. Through the extension of the extension cylinder 61, the rotation of the extension cylinder 61 along the cylinder seat 62, and the rotation of the cylinder seat 62 along the strut 63, the door cover 4 to be detected and the door cover 4 to be detected can be flexibly installed and disassembled through the sucker 5, the door cover 4 can be quickly and efficiently replaced, and the inspection operation efficiency is improved.
The sucking disc 5 is an electromagnetic sucking disc, firmly adsorbs the steel door cover 4, can conveniently control the adsorption force, and improves the flexibility of use.
As shown in fig. 2, a pressure gauge 25 communicating with the inspection cavity 22 is provided outside the inspection box 2. The pressure gauge 25 is used for visually and accurately displaying the hydraulic pressure in the inspection cavity 22, and the pressure gauge 25 can be electrically connected with a control panel for visual display on the control panel.
As shown in fig. 2, one of the connectors 41 on the door cover 4 is selected as a gas release device 42, and a plug is screwed on a mounting groove on the gas release device 42. By opening the plug, the gas in the inspection cavity 22 can be deflated, the automatic pressure relief closing function is realized, the deflation effect is good, and the hydraulic pressure can be ensured not to run off.
The hydraulic pump station 8 is respectively connected with the pushing telescopic cylinder 32, the pushing telescopic cylinder 12 and the retracting telescopic cylinder 61 through the hydraulic pipeline 7, provides hydraulic power for the pushing telescopic cylinder, precisely controls the stroke and the pressure of each telescopic cylinder through the electromagnetic valve, and ensures the stability and the accuracy of the action. The stroke and pressure information of the push-down telescopic cylinder 32, the push-up telescopic cylinder 12 and the retraction telescopic cylinder 61 can be displayed on a control panel, and the control of the electromagnetic valve can be realized on the control panel. Realizing intelligent and high-efficiency hydraulic pressure experiment.
According to the hydraulic test device for the sensor shells, a plurality of sensor shells to be detected are connected to the connector in a threaded sealing manner, and extend out through the downward-pressing telescopic cylinder to drive the pressing frame to press the door cover downward, so that the door cover and the inspection box body are completely sealed; the volume of oil in the oil bag is controlled through the oil pressurizing device, so that the control of the inspection water pressure in the inspection cavity is realized, the high-efficiency water pressure test of the sensor shell is realized, the pressure resistance of a plurality of sensor shells can be inspected at the same time, and the high efficiency of the water pressure test is ensured; the testing pressure can be automatically controlled by controlling the volume of the oil bag, so that the flexibility is good, the applicability range is wide, and the universality is strong; the liquid level height and the air evacuation in the inspection cavity can be flexibly adjusted through the liquid level adjusting device, the accuracy of the hydrostatic test is ensured, the repeated pumping of water in the inspection cavity can be avoided, the operation is convenient, and the test efficiency is improved; the door cover can be replaced quickly, flexibly and efficiently through the retraction device.
In the present specification, each embodiment is described in a progressive manner, and each embodiment focuses on the difference from other embodiments, and the same and similar parts between the embodiments are only required to be referred to each other.
The terms "upper", "lower", "outside", "inside", and the like in the description and in the claims of the present invention and in the above drawings, if any, are used for distinguishing between relative relationships in position and not necessarily for giving qualitative sense. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the invention described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (9)
1. The hydrostatic test device for the sensor shell is characterized by comprising a test box body (2), a press platform (3) and a door cover (4); the inspection box body (2) is arranged on the press platform (3), and a pressing frame (31) for pressing and sealing the door cover (4) and the inspection box body (2) is arranged on the upper side of the press platform (3) through a downward-pressing telescopic cylinder (32); the door cover (4) is provided with a plurality of connectors (41) connected with the sensor shell; an inspection cavity (22) is formed in the inspection box body (2), an oil bag (24) is arranged in the inspection cavity (22), and the oil bag (24) is connected with an oil pressurizing device through an oil pipe (23);
A stepped valve cavity (412) is formed in the connector (41), and a valve core (411) is arranged in the valve cavity (412) in a sliding manner; the lower side of the connector (41) is provided with a channel I (414) which is communicated with the check cavity (22) and the small opening end of the valve cavity (412), the upper side of the connector is provided with a channel II (415), and the channel II (415) is communicated with the large opening end of the valve cavity (412) through a channel III (419); the upper end of the channel II (415) is communicated with a mounting groove for sealing and mounting the sensor shell; a valve core top groove (418) communicated with the channel I (414) is formed in the valve core (411); a spring (413) pushing the valve core (411) towards the direction of the thin end of the valve core is arranged in the valve cavity (412); the spring (413) or the pressure difference at two ends of the valve core (411) pushes the valve core (411), and the valve core top groove (418) is connected with or disconnected from the channel II (415).
2. The hydrostatic test unit for sensor housings according to claim 1, further comprising a level adjustment device (1) for adjusting the level of liquid in the test cavity (22).
3. The hydrostatic test unit for sensor housings according to claim 2, characterized in that the level adjustment device (1) comprises a bracket (11) and a push telescopic cylinder (12) fixedly mounted on the bracket (11); one side of the inspection box body (2) is communicated with a propulsion pipeline (21); the cylinder shaft end of the pushing telescopic cylinder (12) is provided with a piston (121) which is inserted into the pushing pipeline (21) in a sliding way.
4. The hydrostatic test unit for a sensor housing according to claim 1, wherein a spool channel (416) is provided on the spool (411); one end of the valve core channel (416) is arranged on the end face of the thin end of the valve core (411), and the other end of the valve core channel is arranged on the side face of the thin end of the valve core (411) close to the thick end of the valve core (411).
5. The hydrostatic test unit for a sensor housing according to claim 1, wherein a spool bottom groove (417) communicating with the passage i (414) is provided on a lower side of a thin end of the spool (411), the spool bottom groove (417) extending to a thin end face of the spool (411).
6. The hydraulic pressure test device for a sensor housing according to claim 5, wherein a spool side groove (420) that communicates the spool bottom groove (417) and the spool top groove (418) is provided on a side surface of the spool (411).
7. The hydrostatic test unit for sensor housings according to claim 1, characterized in that the press platform (3) comprises an upper cross beam (33), an upright (35) and a lower cross beam (34) connected in sequence from top to bottom; a positioning seat (36) is arranged on the lower cross beam (34), and a limiting block (37) for adjusting and positioning the inspection box body (2) is arranged on the positioning seat (36); the pressing telescopic cylinder (32) is vertically and fixedly arranged on the upper cross beam (33), and a position avoiding space for avoiding the sensor shell is formed in the lower side of the pressing frame (31).
8. The hydrostatic test unit for sensor housings according to claim 1, further comprising a retraction device (6) and a suction cup (5); the retraction device (6) comprises a chassis (64), a support column (63) and a retraction telescopic cylinder (61) which are sequentially connected from bottom to top; the retractable telescopic cylinder (61) is rotationally connected with the support column (63) through the oil cylinder seat (62), and the sucker (5) is arranged at the cylinder shaft end of the retractable telescopic cylinder (61) and used for adsorbing and transferring the door cover (4).
9. The hydrostatic test unit for sensor housings according to claim 1, characterized in that the outside of the test tank (2) is provided with a pressure gauge (25) communicating with the test cavity (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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