CN107957315A - A kind of pressure-resistant fatigue experimental device of pressure gauge - Google Patents
A kind of pressure-resistant fatigue experimental device of pressure gauge Download PDFInfo
- Publication number
- CN107957315A CN107957315A CN201810018796.1A CN201810018796A CN107957315A CN 107957315 A CN107957315 A CN 107957315A CN 201810018796 A CN201810018796 A CN 201810018796A CN 107957315 A CN107957315 A CN 107957315A
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- 239000007788 liquid Substances 0.000 claims abstract description 40
- 238000012360 testing method Methods 0.000 claims abstract description 34
- 230000033001 locomotion Effects 0.000 claims description 7
- 239000012530 fluid Substances 0.000 claims description 4
- 230000007246 mechanism Effects 0.000 abstract description 5
- 230000006872 improvement Effects 0.000 description 18
- 238000002474 experimental method Methods 0.000 description 4
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 241000237858 Gastropoda Species 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 230000004308 accommodation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000009530 blood pressure measurement Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L27/00—Testing or calibrating of apparatus for measuring fluid pressure
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses a kind of pressure-resistant fatigue experimental device of pressure gauge, including the pipeline for being connected with testing pressure table and pressure output system, which is used to input liquid into pipeline, and pressure output system includes：Hydraulic cylinder, piston, piston rod and power output device.The present invention is using hydraulic cylinder as pressure output device, because the decrement of liquid is very small, may be considered the liquid relied solely on, continuously flowing is driven, its stable drive and it is easier to obtain larger power compared with cam mechanism, in addition hydraulic mechanism is easy to wear, long lifespan, noise are small, it is thus possible to effectively solves the problems, such as to run into the prior art.
Description
Technical field
The present invention relates to a kind of pressure-resistant fatigue experimental device of pressure gauge.
Background technology
Pressure gauge refers to using flexible member as sensing element, measure and indicate the instrument higher than environmental pressure, using extremely
Generally, it is almost throughout all industrial flow and scientific research field.In heat distribution pipe network, oil gas transmission, water and air supply system, vehicle
The fields such as maintenance factory shop are seen everywhere.Especially in industrial stokehold and technology measurement process, due to mechanical compression
The elastic sensing element of table has very high mechanical strength and the characteristic such as convenient for production so that mechanical compression table obtains more next
More it is widely applied.
Pressure gauge is during use, particularly under some maximum conditions, such as possibility under high pressure or continuous high-pressure
It can occur fatigue damage, therefore pressure gauge first needs to carry out testing fatigue to it dispatching from the factory.
In the prior art, usually all it is cam mechanism to the testing fatigue of pressure gauge, bound Control constraints, accommodation
It is narrow；It can not realize the experiment of multiple waveforms；Noise is big；Quick abrasion；It can not realize the change and adjustment of frequency.
The content of the invention
It is an object of the invention to can overcome deficiency of the prior art, there is provided one kind can carry out fatigue to pressure gauge
Test device.
For this purpose, the present invention uses following technical scheme：
A kind of pressure-resistant fatigue experimental device of pressure gauge, including the pipeline for being connected with testing pressure table and pressure output
System, the pressure output system are used to input liquid into the pipeline, it is characterised in that the pressure output system includes：
Hydraulic cylinder, the pipeline are passed through from one end of the hydraulic cylinder, and with fluid connection therein, the pipeline and institute
The inner wall for stating hydraulic cylinder keeps fixing seal；
Piston, is slidably and sealingly connected with the inner wall of the hydraulic cylinder, is also fixedly connected with the piston described in can stretching out
The piston rod of hydraulic cylinder；
Power output device, the power output device are used to drive the axis of the piston rod along the piston to do back and forth
Linear motion.
As a further improvement on the present invention, the power output device includes：
Be fixedly connected on the piston rod, and with the worm screw of the concentric setting of the piston rod；
The worm gear that position is fixed and can rotate；
For the motor for driving the worm gear to rotate.
As a further improvement on the present invention, the woven hose connected with the cylinder chamber is additionally provided with, the woven hose is another
One end is connected with liquid cylinder, and the liquid cylinder inputs liquid by the hydraulic pump being connected on the woven hose into the hydraulic cylinder
Body or from the hydraulic cylinder to the hydraulic pump output liquid.
As a further improvement on the present invention, the height for controlling the woven hose break-make is additionally provided with the woven hose
Pressure valve.
As a further improvement on the present invention, at least two test pipelines are parallel with the pipeline, each test
A testing pressure table is communicated with pipeline.
As a further improvement on the present invention, it is additionally provided with and the testing pressure table therein on each test pipeline
The switch valve of series connection, the switch valve are used to limit or allow the liquid in the test tube road to flow into the testing pressure table.
As a further improvement on the present invention, some auxiliary tubes in parallel with the test pipeline are additionally provided with the pipeline
Road, is provided with high pressure gauge or low-pressure meter or high pressure gauge and low-pressure meter parallel with one another on the subsidiary conduit.
As a further improvement on the present invention,
It is additionally provided with the subsidiary conduit and is respectively used to the first cut-off that control liquid flows into the high pressure gauge and low-pressure meter
Valve and the second shut-off valve；
The first pressure sensor connected respectively with the high pressure gauge and low-pressure meter is additionally provided with the subsidiary conduit
With second pressure sensor；
The first pressure sensor and second pressure sensor are electric with first shut-off valve and the second shut-off valve respectively
Connection, and provide to liquid pressure value therein is flowed through to be higher than in the first pressure sensor and second pressure Sensor monitoring
During the critical value of setting, first shut-off valve and the second shut-off valve is controlled to disconnect；
The critical value is respectively the maximum pressure value that the high pressure gauge and low-pressure meter can be born.
As a further improvement on the present invention,
The housing with hollow lumen is fixedly installed on the outer wall of the hydraulic cylinder；
The worm gear is rotatably connected in the housing, and can receive the motor output torque；
The worm screw is arranged in the housing, and can partly be stretched out in the housing and be connected with the piston rod, the snail
Cooperation between bar and the housing can limit the worm screw and rotate.
As a further improvement on the present invention, the motor is servomotor.
Beneficial effects of the present invention are that the present invention uses hydraulic cylinder as pressure output device, because the decrement of liquid is non-
It is often small, it is believed that to be that continuously flowing is driven for the liquid that relies solely on, its stable drive and be easier to obtain compared with cam mechanism
Larger power, in addition hydraulic mechanism is easy to wear, long lifespan, noise are small, it is thus possible to effectively solves to run into the prior art
The problem of.
Brief description of the drawings
Fig. 1 is the structure diagram of the present invention；
Fig. 2 is the structure diagram of the vertical device of power and hydraulic cylinder；
In figure：1- testing pressure tables；2- pipelines；4- pressure output systems；6- hydraulic cylinders；8- pistons；10- piston rods；12-
Power output device；14- worm screws；18- motors；20- woven hoses；22- liquid cylinders；24- hydraulic pumps；26- high pressure valves；28- is tested
Pipeline；30- switch valves；32- subsidiary conduits；34- high pressure gauges；36- low-pressure meters；The first shut-off valves of 38-；The second shut-off valves of 40-；
42- first pressure sensors；44- second pressure sensors；46- housings.
Embodiment
Further illustrate technical scheme below with reference to the accompanying drawings and specific embodiments.
As shown in Fig. 1 to 2, the present invention includes being used for pipeline 2 and the pressure output system 4 connected with testing pressure table 1,
The pressure output system 4 is used to input liquid into the pipeline 2, it is characterised in that the pressure output system 4 includes：
Hydraulic cylinder 6, the pipeline 2 are passed through from one end of the hydraulic cylinder 6, and with fluid connection therein, the pipeline 2
Fixing seal is kept with the inner wall of the hydraulic cylinder 6；
Piston 8, is slidably and sealingly connected with the inner wall of the hydraulic cylinder 6, and institute can be stretched out by being also fixedly connected with the piston 8
State the piston rod 10 of hydraulic cylinder 6；
Power output device 12, the power output device 12 are used to drive axis of the piston rod 10 along the piston 8
Line does linear reciprocating motion.
As a further improvement on the present invention, the power output device 12 includes：
Be fixedly connected on the piston rod 10, and with the worm screw 14 of the 10 concentric setting of piston rod；
The worm gear that position is fixed and can rotate；
For the motor 18 for driving the worm gear to rotate.
As a further improvement on the present invention, the woven hose 20 connected with 6 inner cavity of hydraulic cylinder, the woven hose are additionally provided with
20 other ends are connected with liquid cylinder 22, and the liquid cylinder 22 is by being connected to the hydraulic pump 24 on the woven hose 20 to the liquid
Input liquid or from the hydraulic cylinder 6 to 24 output liquid of hydraulic pump in cylinder pressure 6.
As a further improvement on the present invention, it is additionally provided with the woven hose 20 for controlling 20 break-make of woven hose
High pressure valve 26.
As a further improvement on the present invention, at least two test pipelines 28 are parallel with the pipeline 2, each survey
A testing pressure table 1 is communicated with test tube road 28.
As a further improvement on the present invention, it is additionally provided with and the testing pressure therein on each test pipeline 28
The switch valve 30 that table 1 is connected, the switch valve 30 are used to limit or allow to treat pressure measurement described in the liquid inflow in the test tube road 2
In power table 1.
As a further improvement on the present invention, it is additionally provided with the pipeline 2 some with parallel auxiliary of the test pipeline 28
Pipeline 32 is helped, high pressure gauge 34 or low-pressure meter 36 or high pressure gauge 34 parallel with one another and low-pressure meter are provided with the subsidiary conduit 32
36。
As a further improvement on the present invention,
It is additionally provided with the subsidiary conduit 32 and is respectively used to control liquid flows into the high pressure gauge 34 and low-pressure meter 36 the
One shut-off valve 38 and the second shut-off valve 40；
The first pressure connected respectively with the high pressure gauge 34 and low-pressure meter 36 is additionally provided with the subsidiary conduit 32
Sensor 42 and second pressure sensor 44；
The first pressure sensor 42 and second pressure sensor 44 respectively with first shut-off valve 38 and second section
Only valve 40 is electrically connected, and provides to monitor to flow through liquid therein in the first pressure sensor 42 and second pressure sensor 44
When body pressure value is higher than the critical value set, 38 and second shut-off valve 40 of the first shut-off valve is controlled to disconnect；
The critical value is respectively the maximum pressure value that the high pressure gauge 34 and low-pressure meter 36 can be born.
As a further improvement on the present invention,
The housing 46 with hollow lumen is fixedly installed on the outer wall of the hydraulic cylinder 6；
The worm gear is rotatably connected in the housing 46, and can receive 18 output torque of motor；
The worm screw 14 is arranged in the housing 46, and can partly be stretched out in the housing 46 and be connected with the piston rod 10
Connect, the cooperation between the worm screw 14 and the housing 46 can limit the worm screw 14 and rotate.
As a further improvement on the present invention, the motor 18 is servomotor 18.
The concrete principle of the present invention is as follows：
(1) motor 18 drives worm gear to rotate, which is servomotor 18, can pass through control wave
To control the speed and acceleration of the rotation of motor 18, so as to achieve the purpose that speed governing.
(2) worm gear rotation drives the worm screw 14 being sequentially connected therewith to move, because worm screw 14 is around the freedom of its axis direction
Degree is limited, and (concrete mode can be provided with keyway and key on worm screw 14, set on housing 46 and accommodate the cunning that key slides
Groove) worm screw 14 can only cook straight reciprocating motion along its axis direction；
(3) piston 8 being fixedly connected with worm screw 14 does piston 8 in hydraulic cylinder 6 under the action of worm screw 14 and moves；
(4) liquid in hydraulic cylinder 6 is inputted to hydraulic cylinder 6 under the action of hydraulic pump 24 through piping 2, on pipeline 2
High pressure valve 26 is provided with, is on the one hand capable of the switching of control pipeline 2, on the other hand can prevent liquid from being flow backwards out of hydraulic cylinder 6
Into hydraulic pump 24；
(5) movement of piston 8 can be carried out at the same time with input liquid in hydraulic cylinder 6, when liquid to be entered is set to reaching
During definite value, control high pressure valve 26 blocks pipeline 2；
(6) piston 8 continues the liquid medium in motion compresses hydraulic cylinder 6, or stop motion and pressurize, is now placed in
The pressure gauge to be tested tested on pipeline 28 is in the limiting condition of setting, or keeps the limiting condition, carries out again at this time tired
Labor is tested；
(7) subsidiary conduit 32 in parallel with test pipeline 28 is connected with pipeline 2, being provided with parallel connection on subsidiary conduit 32 sets
The high pressure gauge 34 and low-pressure meter 36 put, person easy to operation can accurately read the pressure value on subsidiary conduit 32, because auxiliary tube
Road 32 is both connected in pipeline 2 with test pipeline 28, and the compression between liquid can be ignored, therefore it is respectively in and is full of
In the state of fluid, pressure is equal, thus the number of degrees on high pressure gauge 34 and low-pressure meter 36 as act on pressure to be tested at this time
Pressure value on table；
(8) connect respectively on high pressure gauge 34 and low-pressure meter 36 first pressure sensor 42 and second pressure sensor 44,
The first pressure sensor 42 and second pressure sensor 44 to the oil supply of high pressure gauge 34 and low-pressure meter 36 first respectively with ending
38 and second shut-off valve 40 of valve is electrically connected, when the liquid pressure value exported in subsidiary conduit 32 senses or the higher than first pressure
During the critical value of two pressure sensors 44 setting, first cut-off of first pressure sensor 42 or the control of second pressure sensor 44
38 or second shut-off valve 40 of valve disconnects, fuel cut-off.
(9) liquid medium in the present invention can be hydraulic oil, antirust solution etc., according to the convertible various experiments of test requirements document
Medium；
(10) said structure can realize the experiment of multiple waveforms and waveform is controllable, you can to do various waveforms as needed
Experiment, for fatigue experimental device of the prior art, applicable surface is wider.
Above in association with the specific embodiment technical principle that the invention has been described.These descriptions are intended merely to explain the present invention's
Principle, and limiting the scope of the invention cannot be construed in any way.Based on explanation herein, the technology of this area
Personnel would not require any inventive effort the other embodiments that can associate the present invention, these modes are fallen within
Within protection scope of the present invention.
Claims (10)
1. a kind of pressure-resistant fatigue experimental device of pressure gauge, including pipeline (2) and pressure for being connected with testing pressure table (1)
Output system (4), the pressure output system (4) are used for the input liquid into the pipeline (2), it is characterised in that the pressure
Output system (4) includes：
Hydraulic cylinder (6), the pipeline (2) pass through from one end of the hydraulic cylinder (6), and with fluid connection therein, the pipe
Road (2) and the inner wall of the hydraulic cylinder (6) keep fixing seal；
Piston (8), is slidably and sealingly connected with the inner wall of the hydraulic cylinder (6), is also fixedly connected with and can stretch out on the piston (8)
The piston rod (10) of the hydraulic cylinder (6)；
Power output device (12), the power output device (12) are used to drive the piston rod (10) along the piston (10)
Axis do linear reciprocating motion.
A kind of 2. pressure-resistant fatigue experimental device of pressure gauge according to claim 1, it is characterised in that the power output dress
Putting (12) includes：
Be fixedly connected on the piston rod (10), and with the worm screw (14) of piston rod (10) the concentric setting；
The worm gear that position is fixed and can rotate；
For the motor (18) for driving the worm gear to rotate.
3. the pressure-resistant fatigue experimental device of a kind of pressure gauge according to claim 2, it is characterised in that be additionally provided with and the liquid
The woven hose (20) of cylinder pressure (6) inner cavity connection, woven hose (20) other end are connected with liquid cylinder (22), the liquid cylinder (22)
Liquid is inputted into the hydraulic cylinder (6) or by the hydraulic pressure by the hydraulic pump (24) being connected on the woven hose (20)
Cylinder (6) is to the hydraulic pump (24) output liquid.
A kind of 4. pressure-resistant fatigue experimental device of pressure gauge according to claim 3, it is characterised in that the woven hose (20)
On be additionally provided with for controlling the high pressure valve (26) of the woven hose (20) break-make.
5. the pressure-resistant fatigue experimental device of a kind of pressure gauge according to claim 4, it is characterised in that on the pipeline (2)
At least two test pipelines (28) are parallel with, a testing pressure table is communicated with each test pipeline (28)
(1)。
A kind of 6. pressure-resistant fatigue experimental device of pressure gauge according to claim 5, it is characterised in that each testing tube
The switch valve (30) connected with the testing pressure table (1) therein is additionally provided with road (28), which is used to limit
Or the liquid in the test tube road (28) is allowed to flow into the testing pressure table (1).
7. the pressure-resistant fatigue experimental device of a kind of pressure gauge according to claim 6, it is characterised in that in the pipeline (2)
Some subsidiary conduits (32) in parallel with the test pipeline (28) are additionally provided with, high pressure gauge is provided with the subsidiary conduit (32)
(34) or low-pressure meter (36) or high pressure gauge parallel with one another (34) and low-pressure meter (36).
A kind of 8. pressure-resistant fatigue experimental device of pressure gauge according to claim 7, it is characterised in that
It is additionally provided with the subsidiary conduit (32) and is respectively used to control liquid and flows into the high pressure gauge (34) and low-pressure meter (36)
First shut-off valve (38) and the second shut-off valve (40)；
The first pressure connected respectively with the high pressure gauge (34) and low-pressure meter (36) is additionally provided with the subsidiary conduit (32)
Force snesor (42) and second pressure sensor (44)；
The first pressure sensor (42) and second pressure sensor (44) respectively with first shut-off valve (38) and second
Shut-off valve (40) is electrically connected, and provides to monitor to flow through in the first pressure sensor (42) and second pressure sensor (44)
When liquid pressure value therein is higher than the critical value set, control first shut-off valve (38) and the second shut-off valve (40) disconnected
Open；
The critical value is respectively the maximum pressure value that the high pressure gauge (34) and low-pressure meter (36) can be born.
A kind of 9. pressure-resistant fatigue experimental device of pressure gauge according to claim 8, it is characterised in that
The housing (46) with hollow lumen is fixedly installed on the outer wall of the hydraulic cylinder (6)；
The worm gear is rotatably connected in the housing (46), and can receive the motor (18) output torque；
The worm screw (14) is arranged in the housing (46), and can partly stretch out in the housing (46) and the piston rod (10)
Connection, the cooperation between the worm screw (14) and the housing (46) can limit the worm screw (14) and rotate.
A kind of 10. pressure-resistant fatigue experimental device of pressure gauge according to claim 9, it is characterised in that the motor (18)
For servomotor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810018796.1A CN107957315A (en) | 2018-01-09 | 2018-01-09 | A kind of pressure-resistant fatigue experimental device of pressure gauge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810018796.1A CN107957315A (en) | 2018-01-09 | 2018-01-09 | A kind of pressure-resistant fatigue experimental device of pressure gauge |
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| Publication Number | Publication Date |
|---|---|
| CN107957315A true CN107957315A (en) | 2018-04-24 |
Family
ID=61956150
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810018796.1A Pending CN107957315A (en) | 2018-01-09 | 2018-01-09 | A kind of pressure-resistant fatigue experimental device of pressure gauge |
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| Country | Link |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109269714A (en) * | 2018-10-30 | 2019-01-25 | 蔡伟 | A kind of vacuum checking device and its on-off method with on-off function |
| CN109612838A (en) * | 2018-12-24 | 2019-04-12 | 燕山大学 | A kind of pipe fitting pressure resistance fatigue experimental device and test method |
| CN110377008A (en) * | 2019-07-24 | 2019-10-25 | 芜湖双翼航空装备科技有限公司 | A kind of test fixture of rudder servo controller |
| CN113092004A (en) * | 2021-04-01 | 2021-07-09 | 安徽春辉仪表线缆集团有限公司 | Pressure-resistant fatigue test device for pressure gauge |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1828257A (en) * | 2006-04-10 | 2006-09-06 | 浙江大学 | Multifunctional high voltage apparatus safe property checking device |
| CN2864644Y (en) * | 2005-12-12 | 2007-01-31 | 洛阳轴承集团有限公司 | In-line detecting device for pressure meter |
| CN101458198A (en) * | 2008-12-29 | 2009-06-17 | 浙江大学 | High-pressure high flow fatigue test system for bearing equipment |
| CN202305113U (en) * | 2011-10-18 | 2012-07-04 | 辽宁省建筑材料科学研究所 | Pressure resistant explosion testing machine for pressure indicator of fire extinguisher |
| CN202579464U (en) * | 2012-05-31 | 2012-12-05 | 上海拜德机械有限公司 | Intelligent pressure gage hydraulic system of roller-changing trolley |
| CN104422617A (en) * | 2013-09-03 | 2015-03-18 | 银庆宇 | Method and device for generating liquid pressure by adopting alternating current servo system |
| CN204422139U (en) * | 2015-02-09 | 2015-06-24 | 徐桂林 | Fatigue tester for pressure instruments |
| CN205483402U (en) * | 2016-04-13 | 2016-08-17 | 沈阳福润德仪器制造有限公司 | Electronic gas pressure medium and vacuum reversal load test machine |
| CN107179156A (en) * | 2017-06-30 | 2017-09-19 | 武汉轻工大学 | A kind of pressure gauge tester |
| CN207991748U (en) * | 2018-01-09 | 2018-10-19 | 上海仪器仪表自控***检验测试所有限公司 | A kind of pressure gauge pressure resistance fatigue experimental device |
-
2018
- 2018-01-09 CN CN201810018796.1A patent/CN107957315A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2864644Y (en) * | 2005-12-12 | 2007-01-31 | 洛阳轴承集团有限公司 | In-line detecting device for pressure meter |
| CN1828257A (en) * | 2006-04-10 | 2006-09-06 | 浙江大学 | Multifunctional high voltage apparatus safe property checking device |
| CN101458198A (en) * | 2008-12-29 | 2009-06-17 | 浙江大学 | High-pressure high flow fatigue test system for bearing equipment |
| CN202305113U (en) * | 2011-10-18 | 2012-07-04 | 辽宁省建筑材料科学研究所 | Pressure resistant explosion testing machine for pressure indicator of fire extinguisher |
| CN202579464U (en) * | 2012-05-31 | 2012-12-05 | 上海拜德机械有限公司 | Intelligent pressure gage hydraulic system of roller-changing trolley |
| CN104422617A (en) * | 2013-09-03 | 2015-03-18 | 银庆宇 | Method and device for generating liquid pressure by adopting alternating current servo system |
| CN204422139U (en) * | 2015-02-09 | 2015-06-24 | 徐桂林 | Fatigue tester for pressure instruments |
| CN205483402U (en) * | 2016-04-13 | 2016-08-17 | 沈阳福润德仪器制造有限公司 | Electronic gas pressure medium and vacuum reversal load test machine |
| CN107179156A (en) * | 2017-06-30 | 2017-09-19 | 武汉轻工大学 | A kind of pressure gauge tester |
| CN207991748U (en) * | 2018-01-09 | 2018-10-19 | 上海仪器仪表自控***检验测试所有限公司 | A kind of pressure gauge pressure resistance fatigue experimental device |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109269714A (en) * | 2018-10-30 | 2019-01-25 | 蔡伟 | A kind of vacuum checking device and its on-off method with on-off function |
| CN109612838A (en) * | 2018-12-24 | 2019-04-12 | 燕山大学 | A kind of pipe fitting pressure resistance fatigue experimental device and test method |
| CN110377008A (en) * | 2019-07-24 | 2019-10-25 | 芜湖双翼航空装备科技有限公司 | A kind of test fixture of rudder servo controller |
| CN113092004A (en) * | 2021-04-01 | 2021-07-09 | 安徽春辉仪表线缆集团有限公司 | Pressure-resistant fatigue test device for pressure gauge |
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