CN113466050A - Hydraulic test device for sensor shell - Google Patents
Hydraulic test device for sensor shell Download PDFInfo
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- CN113466050A CN113466050A CN202110710067.4A CN202110710067A CN113466050A CN 113466050 A CN113466050 A CN 113466050A CN 202110710067 A CN202110710067 A CN 202110710067A CN 113466050 A CN113466050 A CN 113466050A
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- 238000012360 testing method Methods 0.000 title claims abstract description 61
- 238000007689 inspection Methods 0.000 claims abstract description 54
- 230000002706 hydrostatic effect Effects 0.000 claims abstract description 22
- 239000007788 liquid Substances 0.000 claims abstract description 22
- 238000007789 sealing Methods 0.000 claims abstract description 14
- 238000009434 installation Methods 0.000 claims description 6
- 239000012530 fluid Substances 0.000 claims 1
- 230000001105 regulatory effect Effects 0.000 claims 1
- 238000001514 detection method Methods 0.000 abstract description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 20
- 238000007599 discharging Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000010586 diagram Methods 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
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 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
- 239000000463 material Substances 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
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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
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Abstract
The invention discloses a hydrostatic 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 machine platform and a door cover; the inspection box body is arranged on the press machine platform, and the upper side of the press machine platform is provided with a pressing frame for pressing and sealing the door cover and the inspection box body through a downward pressing telescopic cylinder; the door cover is provided with a connector connected with the sensor shell; the inspection box body is internally provided with an inspection cavity, the inspection cavity is internally provided with an oil bag, and the oil bag is connected with an oil liquid pressurizing device through an oil pipe. The sensor shell is connected to the connector in a threaded sealing manner, and the pressing frame is driven to press the door cover downwards through the downward pressing telescopic cylinder, so that the door cover and the inspection box body are sealed; the oil liquid pressurizing device controls the volume of oil liquid in the oil bag and controls hydraulic pressure in the detection cavity, so that efficient hydrostatic test on the sensor shell is realized; the pressure can be automatically controlled and checked 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 hydraulic pressure test device for a sensor shell.
Background
A pressure transmitter is a device that converts pressure into a pneumatic signal or an electric signal for control and remote transmission. It can convert the physical pressure parameters sensed by the load cell sensor into standard electric signals for the secondary instruments such as indicating alarm, recorder and regulator to measure, indicate and regulate the process.
According to requirements, pressure resistance tests are required to be carried out on shells of sensors for engineering machinery, mining machinery and hydraulic equipment so as to ensure that the shells have explosion-proof performance. The function of the sensor is to detect the working pressure of the hydraulic circuit, etc., and the sensor is generally connected with a checking device through external threads and internal threads, and the structure of a shell does not need to be changed and a transition device does not need to be used in the detection process.
At present, pressure tests of small-sized flame-proof or flame-proof and intrinsic safety type sensor shells, particularly pressure transmitter shells mainly depend on universal testing devices, but the traditional testing device has the problems of low testing efficiency, repeated manual disassembly, water pressure charging and discharging and the like, and the operation efficiency is seriously influenced. In addition, the test object needs to be observed manually in the test process, and if the pressure resistance of the sensor shell is poor, the risk of fracture and injury to people exists.
Disclosure of Invention
In order to solve the problems that the existing sensor shell hydrostatic test device is low in test efficiency and needs repeated manual disassembly and water pressure charging and discharging; and the problem that the sensor shell is broken to hurt people exists, the invention provides a hydraulic test device for the sensor shell.
The invention is realized by the following technical scheme.
A hydrostatic test device for a sensor shell comprises a test box body, a press machine platform and a door cover; the inspection box body is arranged on the press machine platform, and the upper side of the press machine platform is provided with a pressing frame for pressing and sealing the door cover and the inspection box body through a downward pressing telescopic cylinder; the door cover is provided with a plurality of connectors connected with the sensor shell; the inspection box comprises an inspection box body, and is characterized in that an 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 liquid pressurizing device through an oil pipe. The sensor shells to be detected are connected to the connector in a sealing mode through threads and extend out through the downward pressing telescopic cylinder to drive the pressing frame to press the door cover downwards, so that the door cover and the inspection box body are completely sealed; the volume of oil in the oil bag is controlled by the oil pressurizing device, so that the control of the detection water pressure in the detection 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 detected simultaneously, and the high efficiency of the water pressure test is ensured; the pressure can be automatically controlled and checked 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 device and also comprises a liquid level adjusting device for adjusting the liquid level in the inspection cavity.
The invention is further improved, and the liquid level adjusting device comprises a bracket and a propelling telescopic cylinder fixedly arranged on the bracket; one side of the inspection box body is communicated with a propelling pipeline; and a piston which is inserted in the propelling pipeline in a sliding manner is arranged at the cylinder shaft end of the propelling telescopic cylinder. The piston controlling the shaft end of the propelling telescopic cylinder is propelled in the propelling pipeline, so that the liquid level height and the air exhaust body in the inspection cavity can be flexibly adjusted, the accuracy of the hydrostatic test is ensured, the water in the inspection cavity can be prevented from being repeatedly pumped and discharged, the operation is convenient and fast, and the test efficiency is improved.
The invention is further improved in that a step-shaped valve cavity is arranged in the connector, and a valve core is arranged in the valve cavity in a sliding manner; a passage I communicating the inspection cavity with the small valve cavity opening end is formed in the lower side of the connector, a passage II is formed in the upper side of the connector, and the passage II is communicated with the large valve cavity opening end through a passage III; the upper end of the channel II is communicated with an installation groove for sealing and installing the sensor shell; the valve core is provided with a valve core top groove communicated with the channel I; a spring for pushing the valve core to the direction of the thin end of the valve core is arranged in the valve cavity; and the elastic force of the spring or the pressure difference between the two ends of the valve core pushes the valve core, and the top groove of the valve core is communicated or disconnected with the channel II. When the tested sensor shell is well sealed and does not leak, the valve core is under the elasticity of the spring, and the two ends of the channel I, the valve core top groove, the channel II, the channel III and the valve cavity are communicated to realize hydraulic balance as shown in the figure; when the tested sensor shell has leakage problems, the pressures at two ends of the valve core are unbalanced, the pressure at the position of the channel II is smaller than that of the channel I, namely the pressure at the left end of the valve core is larger than that at the right end of the valve core, and the valve core is pushed to move right through hydraulic pressure difference, so that the valve core top groove and the channel II are disconnected; the connector is simple in structure and good in practicability, and normal detection of a plurality of sensor shells is effectively guaranteed. When the liquid level of the inspection cavity is lowered, the valve core is reset under the elastic force of the spring.
The invention is further improved in that a valve core channel is arranged on the valve core; 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 close to the thick end of the valve core. The hydraulic pressure stressed areas on the two sides of the valve core are the same, and the valve core is better in balance when normal detection is guaranteed.
The invention further improves the structure that a valve core bottom groove communicated with the channel I is formed in the lower side of the thin end of the valve core, and the valve core bottom groove extends to the end face of the thin end of the valve core. Through case kerve intercommunication passageway I, valve pocket aperture end and case passageway, simple structure, reasonable in design easily realizes.
The invention is further improved in that a valve core side groove communicated with the valve core bottom groove and the valve core top groove is formed in the side surface of the valve core. The valve core side groove is easy to process and realize.
The invention is further improved in that the press machine platform comprises an upper cross beam, a stand column 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 lower pressing telescopic cylinder is vertically and fixedly installed on the upper cross beam, and a avoiding space for avoiding the sensor shell is formed in the lower side of the pressing frame. The press machine platform is simple and stable in structure, strong in universality and good in practicability.
The invention is further improved and 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; receive and release the telescoping cylinder through the hydro-cylinder seat with the pillar rotates and is connected, the sucking disc set up in receive and release the cylinder axle end of telescoping cylinder, and be used for right door closure adsorbs, transports. Through the stretching of the stretching and retracting telescopic cylinder, the stretching and retracting telescopic cylinder rotates along the oil cylinder seat, and the oil cylinder seat rotates along the supporting column, the installation of the door cover to be detected and the disassembly of the door cover after the detection are flexibly realized through the sucking disc, the door cover can be replaced quickly and efficiently, and the inspection operation efficiency is improved.
In addition, the outer side of the inspection box body is provided with a pressure gauge communicated with the inspection cavity. The hydraulic pressure in the inspection cavity is visually and accurately displayed through the pressure gauge.
According to the technical scheme, the invention has the beneficial effects that: the sensor shells to be detected are connected to the connector in a sealing mode through threads and extend out through the downward pressing telescopic cylinder to drive the pressing frame to press the door cover downwards, so that the door cover and the inspection box body are completely sealed; the volume of oil in the oil bag is controlled by the oil pressurizing device, so that the control of the detection water pressure in the detection 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 detected simultaneously, and the high efficiency of the water pressure test is ensured; the pressure can be automatically controlled and checked 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 exhaust body in the inspection cavity can be flexibly adjusted through the liquid level adjusting device, the accuracy of a hydrostatic test is ensured, water in the inspection cavity can be prevented from being repeatedly pumped and discharged, the operation is convenient and fast, 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 solution of the present invention, the drawings used in the description will be briefly introduced, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Fig. 2 is a side view of a press platform according to an embodiment of the present invention.
Fig. 3 is a schematic view of a positioning seat structure according to an embodiment of the present invention.
Fig. 4 is a schematic diagram of a connector according to an embodiment of the present invention.
Fig. 5 is a schematic view of a leak condition connector according to an embodiment of the present invention.
Fig. 6 is a schematic top view of a valve cartridge according to an embodiment of the present invention.
In the drawings: 1. the device comprises a liquid level adjusting device, 11, a support, 12, a propelling telescopic cylinder, 121, a piston, 2, a test box body, 21, a propelling pipeline, 22, a test cavity, 23, an oil pipe, 24, an oil bag, 25, a pressure gauge, 3, a press machine platform, 31, a press frame, 32, a downward-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, an air discharging device, 5, a suction cup, 6, a retracting device, 61, a retracting telescopic cylinder, 62, a 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 accompanying drawings in the present embodiment, and it is apparent that the embodiments described below are only a part of embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the scope of protection of this patent.
As shown in fig. 1, the invention discloses a hydrostatic test device for a sensor housing, which comprises a cuboid-shaped test box 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 machine platform 3, the upper side of the press machine platform 3 is provided with a pressing frame 31 for pressing and sealing the door cover 4 and the inspection box body 2 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; a plurality of connectors 41 in threaded connection with the sensor shell are arranged on the door cover 4 in an array manner; a detection cavity 22 for water injection is formed in the detection box body 2, an oil bag 24 is arranged in the detection cavity 22, and the oil bag 24 is connected with an oil liquid pressurizing device through an oil pipe 23 which is positioned on the side wall of the detection box body 2.
The sensor shells to be detected are connected to the connector 41 in a sealing mode through threads and extend out through the downward-pressing telescopic cylinder 32, and the pressing frame 31 is driven to press the door cover 4 downward, so that 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 pressure can be automatically controlled and checked 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 the sensor housing further comprises a liquid level adjusting device 1 for adjusting the liquid level in the test cavity 22.
As shown in fig. 1-2, the liquid level adjusting device 1 comprises a bracket 11 and a propelling telescopic cylinder 12 transversely and fixedly mounted on the bracket 11; a propelling pipeline 21 is communicated with one side of the inspection box body 2; the cylinder shaft end of the propelling telescopic cylinder 12 is provided with a piston 121 which is inserted in the propelling pipeline 21 in a sliding manner. The piston 121 of the cylinder shaft end of the propelling telescopic cylinder 12 is controlled to be propelled in the propelling pipeline 21, the liquid level height and the air exhaust body in the detection cavity 22 can be flexibly adjusted, the accuracy of the hydrostatic test is guaranteed, water in the detection cavity 22 can be prevented from being repeatedly pumped and discharged, the operation is convenient and fast, and the test efficiency is improved.
As shown in fig. 4-5, a stepped valve cavity 412 is formed in the connector 41, and a matched stepped valve core 411 is slidably arranged in the valve cavity 412; a passage I414 communicating the inspection cavity 22 with the small opening end of the valve cavity 412 is formed in the lower side of the connector 41, a passage II 415 is formed in the upper side of the connector 41, and the passage II 415 is communicated with the large opening end of the valve cavity 412 through a passage III 419; the upper end of the channel II 415 is communicated with an installation groove for the thread sealing installation of the sensor shell; the upper side of the thin end of the valve core 411 is provided with a valve core top groove 418 communicated with the channel I414; a spring 413 for pushing the valve element 411 toward the narrow end is arranged in the valve chamber 412. When the tested sensor shell is well sealed and does not leak, the valve core 411 is under the elastic force of the spring 413, and 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 are communicated to realize hydraulic balance, as shown in FIG. 4; when the tested sensor shell has leakage problems, the pressures at two ends of the valve core 411 are unbalanced, the pressure at the position of the channel II 415 is smaller than the pressure 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, the valve core 411 is pushed to move right through hydraulic pressure difference, and therefore the valve core top groove 418 and the channel II 415 are disconnected, as shown in fig. 5, the pressure relief automatic closing function is provided, so that the hydraulic pressure in the testing cavity 22 is normal, normal and accurate detection of other sensor shells is guaranteed, and the reliability is good; the connector 41 has a simple structure and good practicability, and can effectively ensure normal detection of a plurality of sensor shells at the same time. When the liquid level in the check cavity 22 drops, the valve element 411 is restored by the elastic force of the spring 413.
As shown in fig. 4-5, a valve core passage 416 is formed on the valve core 411; one end of the valve core passage 416 is opened on the end surface of the thin end of the valve core 411, and the other end is opened on the side surface of the thin end of the valve core 411 close to the thick end of the valve core 411. The hydraulic pressure stressed areas on the two sides of the valve core 411 are the same, and the valve core 411 is guaranteed to be better balanced during normal detection.
As shown in fig. 4-5, a valve core bottom groove 417 communicated with the channel i 414 is formed at the lower side of the thin end of the valve core 411, and the valve core bottom groove 417 extends to the end surface of the thin end of the valve core 411. The channel I414, the small-opening end of the valve cavity 412 and the valve core channel 416 are communicated through the valve core bottom groove 417, and the valve core structure is simple in structure, reasonable in design and easy to achieve.
As shown in fig. 6, a valve body side groove 420 communicating the valve body bottom groove 417 and the valve body top groove 418 is opened in a side surface of the valve body 411. The valve core side groove 420 is easy to process and realize.
Wherein, a contact type alarm sensor is arranged on the end surface of the large opening end of the valve cavity 412 and is respectively connected with the 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 shell of the sensor to be detected is visually and accurately judged through signal coding, the test object does not need to be observed manually and directly, the danger that people are injured 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, a vertical column 35 and a lower beam 34 which are connected in sequence from top to bottom; be equipped with positioning seat 36 on the bottom end rail 34, set up a plurality of horizontal, vertical crisscross slides at positioning seat 36 upside, the slide is "protruding" font, and it is right to be equipped with four at positioning seat 36 upside the stopper 37 of 2 centre gripping location of inspection box, set up the slotted hole on the stopper 37, the slotted hole passes through bolted connection with the slide to be fixed, can realize the nimble regulation to inspection box 2 positions through loosening the bolt soon, and the suitability is strong. The lower compression telescopic cylinder 32 is vertically and fixedly installed on the upper cross beam 33, and a avoiding space for avoiding the sensor shell is formed in the lower side of the compression frame 31. The press machine platform 3 is simple and stable in structure, strong in universality and good in 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 and the oil cylinder base 62 are vertically and rotatably connected, and the oil cylinder base 62 is horizontally and rotatably connected with the support column 63. The sucking disc 5 is arranged at the cylinder shaft end of the retractable telescopic cylinder 61 and is used for adsorbing and transferring the door cover 4. Through the stretching of the stretching and retracting telescopic cylinder 61, the stretching and retracting telescopic cylinder 61 rotates along the oil cylinder seat 62, the oil cylinder seat 62 rotates along the supporting column 63, the installation of the door cover 4 to be detected and the disassembly of the door cover 4 after the detection are flexibly realized through the sucking disc 5, the door cover 4 can be replaced quickly and efficiently, and the inspection operation efficiency is improved.
Wherein, sucking disc 5 is the electromagnetism sucking disc, and it is firm to door closure 4 absorption of steel material, and can convenient control adsorption affinity, improves the flexibility of using.
As shown in fig. 2, a pressure gauge 25 is disposed outside the inspection chamber 2 and communicates with the inspection cavity 22. The hydraulic pressure in the inspection cavity 22 is visually and accurately displayed through the pressure gauge 25, and the pressure gauge 25 can be electrically connected with a control panel for visually displaying on the control panel.
As shown in FIG. 2, one of the connectors 41 on the selective door 4 is used as an air discharging device 42, and a plug is screwed on the mounting groove on the air discharging device 42. Through opening the shutoff head, can realize deflating the inside gas of inspection cavity 22, and have the pressure release self-closing function, it is effectual to deflate, and can guarantee that hydraulic pressure does not run off.
The hydraulic pump station 8 is respectively connected with the downward-pressing telescopic cylinder 32, the propelling telescopic cylinder 12 and the retracting telescopic cylinder 61 through a hydraulic pipeline 7, provides hydraulic power for the downward-pressing telescopic cylinder, accurately controls the stroke and pressure of each telescopic cylinder through an electromagnetic valve, and ensures the stability and accuracy of actions. The stroke and pressure information of the push telescopic cylinder 32, the push telescopic cylinder 12 and the retractable telescopic cylinder 61 can be displayed on a control panel, and the control of the electromagnetic valve can also be realized on the control panel. The intelligent and high-efficiency water pressure experiment is realized.
According to the hydrostatic test device for the sensor shells, a plurality of sensor shells to be detected are connected to a connector in a sealing mode through threads and extend out through a downward pressing telescopic cylinder to drive a pressing frame to press a door cover downwards, so that the door cover and a test box body are completely sealed; the volume of oil in the oil bag is controlled by the oil pressurizing device, so that the control of the detection water pressure in the detection 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 detected simultaneously, and the high efficiency of the water pressure test is ensured; the pressure can be automatically controlled and checked 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 exhaust body in the inspection cavity can be flexibly adjusted through the liquid level adjusting device, the accuracy of a hydrostatic test is ensured, water in the inspection cavity can be prevented from being repeatedly pumped and discharged, the operation is convenient and fast, and the test efficiency is improved; the door cover can be replaced quickly, flexibly and efficiently through the retraction device.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The terms "upper", "lower", "outside", "inside" and the like in the description and claims of the present invention and the above drawings are used for distinguishing relative positions if any, and are not necessarily given qualitatively. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," as well as any variations thereof, are intended to cover non-exclusive inclusions.
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 (10)
1. A hydrostatic test device for a sensor shell is characterized by comprising a test box body (2), a press machine platform (3) and a door cover (4); the inspection box body (2) is arranged on the press machine 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 machine 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; the inspection box is characterized in that 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 liquid pressurizing device through an oil pipe (23).
2. The hydrostatic test device for sensor housings, according to claim 1, characterized by further comprising a level adjustment device (1) for regulating the level of liquid in the test cavity (22).
3. The hydrostatic test device for a sensor housing according to claim 2, characterized in that the fluid level adjustment device (1) comprises a bracket (11) and a thrust telescopic cylinder (12) fixedly mounted on the bracket (11); one side of the inspection box body (2) is communicated with a propelling pipeline (21); and a piston (121) which is inserted into the propelling pipeline (21) in a sliding manner is arranged at the cylinder shaft end of the propelling telescopic cylinder (12).
4. The hydrostatic test device for the sensor housing, according to claim 1, characterized in that a stepped valve cavity (412) is formed in the connector (41), and a valve core (411) is slidably arranged in the valve cavity (412); a passage I (414) communicated with the inspection cavity (22) and the small opening end of the valve cavity (412) is formed in the lower side of the connector (41), a passage II (415) is formed in the upper side of the connector, and the passage II (415) is communicated with the large opening end of the valve cavity (412) through a passage III (419); the upper end of the channel II (415) is communicated with an installation groove for sealing and installing the sensor shell; the valve core (411) is provided with a valve core top groove (418) communicated with the channel I (414); a spring (413) which pushes the valve core (411) towards the direction of the thin end of the valve core is arranged in the valve cavity (412); the valve core (411) is pushed by the elastic force of the spring (413) or the pressure difference between two ends of the valve core (411), and the valve core top groove (418) is communicated or disconnected with the channel II (415).
5. The hydrostatic test device for the sensor housing, as set forth in claim 4, characterized in that the valve core (411) is provided with a valve core passage (416); one end of the valve core channel (416) is arranged on the end surface of the thin end of the valve core (411), and the other end of the valve core channel is arranged on the side surface of the thin end of the valve core (411) close to the thick end of the valve core (411).
6. The hydrostatic test device for the sensor housing, according to claim 4, characterized in that a spool bottom groove (417) communicated with the channel I (414) is formed at the lower side of the thin end of the spool (411), and the spool bottom groove (417) extends to the end surface of the thin end of the spool (411).
7. The hydrostatic test device for the sensor housing according to claim 6, wherein the valve core (411) has a valve core side groove (420) formed on a side surface thereof, the valve core side groove communicating with the valve core bottom groove (417) and the valve core top groove (418).
8. The hydrostatic test device for sensor housings, according to claim 1, characterized in that the press platform (3) comprises an upper cross beam (33), a vertical column (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 lower pressing telescopic cylinder (32) is vertically and fixedly installed on the upper cross beam (33), and a avoiding space for avoiding the sensor shell is formed in the lower side of the pressing frame (31).
9. The hydrostatic test device for sensor housings, according to claim 1, characterized by further comprising a retraction device (6) and a suction cup (5); the retractable device (6) comprises a chassis (64), a support column (63) and a retractable telescopic cylinder (61) which are sequentially connected from bottom to top; receive and release telescoping cylinder (61) through hydro-cylinder seat (62) with pillar (63) rotate to be connected, sucking disc (5) set up in receive and release telescoping cylinder's (61) cylinder axle end, and be used for right door closure (4) adsorb, transport.
10. The hydrostatic test device for sensor housings, according to claim 1, characterized in that the test chamber (2) is provided, on the outside, with a pressure gauge (25) communicating with the test cavity (22).
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| CN114945255A (en) * | 2022-05-26 | 2022-08-26 | 南通杨天机电设备有限公司 | Ready-package 5G communication rack |
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