CN107748040A - A kind of sealing Withstand test device of adjustable hydraulic pressure - Google Patents
A kind of sealing Withstand test device of adjustable hydraulic pressure Download PDFInfo
- Publication number
- CN107748040A CN107748040A CN201711143086.3A CN201711143086A CN107748040A CN 107748040 A CN107748040 A CN 107748040A CN 201711143086 A CN201711143086 A CN 201711143086A CN 107748040 A CN107748040 A CN 107748040A
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- Prior art keywords
- piston
- water inlet
- hydraulic pressure
- exhaust outlet
- water
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Links
- 238000012360 testing method Methods 0.000 title claims abstract description 16
- 238000007789 sealing Methods 0.000 title claims abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 47
- 238000005259 measurement Methods 0.000 abstract description 2
- 238000002474 experimental method Methods 0.000 description 7
- 238000013461 design Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000013505 freshwater Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000004078 waterproofing Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
-
- 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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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Examining Or Testing Airtightness (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
A kind of sealing Withstand test device of adjustable hydraulic pressure, it is related to the water pressure resistance technical field of measurement and test of instrument and equipment, part, water pressure gauge, pressure sensor are set respectively on sealer shell, and water inlet, discharge outlet and the exhaust outlet connected with sealer shell inner chamber, piston is connected by dynamic seal on sealer shell, one end of piston is inserted into sealer shell inner chamber, the other end connection piston surge motion control motor of piston；Corresponding solenoid electric valve is set respectively in water inlet, discharge outlet and exhaust outlet, level sensor is also set up on exhaust outlet；The signal output part of level sensor is connected to the input for the solenoid electric valve being connected with water inlet.Structure setting of the present invention is simple, and noise is small, and the adjustment of hydraulic pressure is more accurately, conveniently, is advantageous to accurately carry out pressure test to test object.
Description
Technical field
The present invention relates to the water pressure resistance technical field of measurement and test of instrument and equipment, part.
Background technology
Performance indications when being frequently necessary to test each unit in certain depth of water when designing underwater product, at this moment can will be by
Test cell is positioned over full of water and had in the sealing container of certain hydraulic pressure, and the corresponding depth of water is simulated by adjusting hydraulic pressure, is entered
The further experiment of row.
Existing more ripe method is to carry out the adjustment of hydraulic pressure by the combination of water pump and various valves, but is existed
Such as water route is more complicated, pump working when noise it is larger etc. the shortcomings of.
The content of the invention
Present invention aims at propose a kind of sealing Withstand test device of the adjustable hydraulic pressure of convenient experiment.
The present invention includes sealer shell, sets water pressure gauge, pressure sensor, and and sealer respectively on sealer shell
Water inlet, discharge outlet and the exhaust outlet of shell inner chamber connection, it is characterised in that：Connected on the sealer shell by dynamic seal
Piston, one end of the piston are inserted into sealer shell inner chamber, the other end connection piston surge motion control electricity of the piston
Machine；The water inlet, discharge outlet and exhaust outlet set corresponding solenoid electric valve respectively, and water level biography is also set up on the exhaust outlet
Sensor；The signal output part of the level sensor is connected to the input for the solenoid electric valve being connected with water inlet.
It is well known that water has certain elasticity, its volume also can phase while pressure change for the water of certain mass
It should change, variation relation is as follows：
Dp=- k*dv/v, i.e. dv/v=- dp/k；
Wherein dp is pressure variety, and dv is volume change, and v is volume, and k is the bulk modulus of water, k=2.18*
109Pa。
From above formula, when changing the volume of water, hydraulic pressure can be caused to make corresponding change.
The present invention is exactly to be designed using principles above.
During experiment, each unit will be tested and loaded in the sealer shell of known internal volume, draining is made by solenoid electric valve
Mouth is closed, and enters water filling to water inlet by solenoid electric valve, until the level sensor on exhaust outlet shows and filled water.Water level
Sensor is used for ensureing to close water inlet automatically after water is filled in sealer shell.
The hydraulic pressure that control centre needs according to experiment, piston is driven to move axially by piston surge motion control motor
To adjust the hydraulic pressure in sealer shell, hydraulic pressure feeds back to control centre by pressure sensor, so as to ensure in sealer shell
Hydraulic pressure reaches experiment sets requirement, and control centre controls and adjusts the hydraulic pressure in sealer shell in real time.
Control centre sends signal to solenoid electric valve after off-test, closes water inlet, opens exhaust outlet and discharge outlet,
Discharge the water in sealer shell.
Structure setting of the present invention is simple, and noise is small, and the adjustment of hydraulic pressure is more accurately, conveniently, is advantageous to accurately to test
Object carries out pressure test.
Brief description of the drawings
Fig. 1 is a kind of structural representation of the present invention.
Fig. 2 is Fig. 1 right side view.
Fig. 3 be Fig. 2 A-A to rotation cut-away view.
Embodiment
First, apparatus structure explanation：
As shown in Figure 1, 2, 3, water pressure gauge 2, pressure sensor 3 are respectively arranged with sealer shell 1, respectively with sealer shell 1
Water inlet 4, discharge outlet 5 and the exhaust outlet 6 of inner chamber connection, also, water inlet 4, discharge outlet 5 and exhaust outlet 6 are each set accordingly
Solenoid electric valve, open or close to facilitate to implement water inlet 4, discharge outlet 5 and exhaust outlet 6 by corresponding solenoid electric valve
Make.In addition, also setting up level sensor on exhaust outlet 6, the signal output part of level sensor is connected to be connected with water inlet 4
Solenoid electric valve input.
Piston 8 is connected by dynamic seal 7 on sealer shell 1, one end of piston 8 is inserted into the inner chamber of sealer shell 1, separately
One end is then connected with piston surge motion control motor 9.
2nd, apply：
This example is that dynamic sealing and the pressure-resistant of static seal experimental rig are tested under 3MPa hydraulic pressure to an angular encoder.
It is required that the attribute such as water proofing property of the test encoder under 3mp hydraulic pressure, precision, response, and can be with single -step operation.
Because tested encoder needs to be tested under rotation, so the present invention passes through another group on sealer shell 1
Dynamic sealing device connects a rotary shaft 11, and the inner of rotary shaft 11 is inserted into sealer shell 1, and with encoder assembles part 10
Rotating shaft is fixedly connected, and the outer end of rotary shaft 11 is arranged in outside sealer shell 1, and connects one group of rotary electric machine 12 at the end.
The size and amount of movement of calculating piston 8 are needed before experiment：
As dp=3MPa, dv/v=- 3*106/ (2.18*109)= -1.38*10-3=-0.138%
After design, sealing container encoder assembles part 10 is sealingly mounted to one end of sealer shell 1, the inner chamber of sealer shell 1
Can water filling volume be 962cm3, in 3MPa pressure, volume change is 0.138%*962cm3=1.323 cm3, such as piston diameter
For 10mm, then piston stroke is 1.323 cm3/ 3.14/0.5/0.5=1.7cm, piston thrust are 3MPa*3.14* (5*10-3)2=
235N。
The present invention is used for ensureing to close automatically after water is filled in sealer shell 1 using the level sensor on exhaust outlet 6
Water inlet 4.
The adjustment flow of hydraulic pressure：Water inlet 4 and exhaust outlet 6 are opened by corresponding solenoid electric valve by control centre, closed
Close discharge outlet 5, inject fresh water into sealer shell 1, when control centre detects that exhaust outlet 6 has water spilling control centrally through
Corresponding solenoid electric valve closes water inlet 4 and exhaust outlet 6, ensures to be completely filled with water in sealer shell 1.
Control centre drives piston 8 to make axial movement to adjust sealer shell further according to the 3MPa hydraulic pressure of needs by motor
Hydraulic pressure in 1, hydraulic pressure feed back to control centre by pressure sensor 3, so as to ensure that the hydraulic pressure in sealer shell 1 reaches
3MPa, and the hydraulic pressure that control centre controls and adjusted in sealer shell 1 in real time is kept stable at 3MPa.
Control centre closes water inlet 4 by corresponding solenoid electric valve again after off-test, opens exhaust outlet 6 and draining
Mouth 5, discharge the water in sealer shell 1.
During experiment when encoder assembles part 10 is sent into water alarm signal, can by the present apparatus and alarm, and
To control centre's alert, control centre performs pressure release draining action again.
Claims (1)
1. a kind of sealing Withstand test device of adjustable hydraulic pressure, including sealer shell, set respectively on sealer shell water pressure gauge,
Pressure sensor, and water inlet, discharge outlet and the exhaust outlet connected with sealer shell inner chamber, it is characterised in that：Described close
Seal on device shell and piston connected by dynamic seal, one end of the piston is inserted into sealer shell inner chamber, the piston it is another
End connection piston movement controlled motor；The water inlet, discharge outlet and exhaust outlet set corresponding solenoid electric valve respectively, described
Level sensor is also set up on exhaust outlet；The signal output part of the level sensor is connected to the electromagnetism control being connected with water inlet
The input of valve processed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711143086.3A CN107748040B (en) | 2017-11-17 | 2017-11-17 | Sealing pressure-resistant test device capable of adjusting water pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711143086.3A CN107748040B (en) | 2017-11-17 | 2017-11-17 | Sealing pressure-resistant test device capable of adjusting water pressure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107748040A true CN107748040A (en) | 2018-03-02 |
| CN107748040B CN107748040B (en) | 2024-01-16 |
Family
ID=61252140
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711143086.3A Active CN107748040B (en) | 2017-11-17 | 2017-11-17 | Sealing pressure-resistant test device capable of adjusting water pressure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107748040B (en) |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1344278A (en) * | 1970-02-04 | 1974-01-16 | Aerospatiale | Method and devices for regulating the pressure and its rate of variation in a chamber |
| JPH1123410A (en) * | 1997-07-04 | 1999-01-29 | Hideo Seta | Water pressure withstanding test apparatus and method therefor |
| JP2003343476A (en) * | 2002-05-28 | 2003-12-03 | Ebara Corp | Variable speed water supply device |
| JP2004069298A (en) * | 2002-08-01 | 2004-03-04 | Kubota Corp | Inner pressure application test device |
| JP2005221475A (en) * | 2004-02-09 | 2005-08-18 | Nagaki Seiki Co Ltd | Pressure-proof test machine for hose terminal part for fire-extinguishing |
| JP2007146908A (en) * | 2005-11-24 | 2007-06-14 | Smc Corp | Vacuum pressure adjusting system |
| CN101660963A (en) * | 2009-05-15 | 2010-03-03 | 福建闽机机械科技有限公司 | Sealing intensity blasting test method and device of water heating products |
| CN101881712A (en) * | 2009-05-07 | 2010-11-10 | 刘小成 | Gas cylinder test device by using external measuring method of variable-volume burette |
| JP2011112513A (en) * | 2009-11-26 | 2011-06-09 | Mitsubishi Heavy Ind Ltd | Pressure regulating device, and pressure testing device including the same |
| CN102297749A (en) * | 2011-08-05 | 2011-12-28 | 青岛市兰青环保工程有限公司 | Comprehensive test device for air tightness and water pressure resistance of mining mobile escape capsule |
| CN103323353A (en) * | 2013-07-08 | 2013-09-25 | 大连理工大学 | Dynamic water pressure generator capable of regulating frequency and pressure |
| CN106441718A (en) * | 2016-11-11 | 2017-02-22 | 中国船舶重工集团公司第七0三研究所 | Marine water-pressure-resistant seal pressurizing device |
| CN207515979U (en) * | 2017-11-17 | 2018-06-19 | 扬州曙光光电自控有限责任公司 | A kind of sealing Withstand test device of adjustable hydraulic pressure |
-
2017
- 2017-11-17 CN CN201711143086.3A patent/CN107748040B/en active Active
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1344278A (en) * | 1970-02-04 | 1974-01-16 | Aerospatiale | Method and devices for regulating the pressure and its rate of variation in a chamber |
| JPH1123410A (en) * | 1997-07-04 | 1999-01-29 | Hideo Seta | Water pressure withstanding test apparatus and method therefor |
| JP2003343476A (en) * | 2002-05-28 | 2003-12-03 | Ebara Corp | Variable speed water supply device |
| JP2004069298A (en) * | 2002-08-01 | 2004-03-04 | Kubota Corp | Inner pressure application test device |
| JP2005221475A (en) * | 2004-02-09 | 2005-08-18 | Nagaki Seiki Co Ltd | Pressure-proof test machine for hose terminal part for fire-extinguishing |
| JP2007146908A (en) * | 2005-11-24 | 2007-06-14 | Smc Corp | Vacuum pressure adjusting system |
| CN101881712A (en) * | 2009-05-07 | 2010-11-10 | 刘小成 | Gas cylinder test device by using external measuring method of variable-volume burette |
| CN101660963A (en) * | 2009-05-15 | 2010-03-03 | 福建闽机机械科技有限公司 | Sealing intensity blasting test method and device of water heating products |
| JP2011112513A (en) * | 2009-11-26 | 2011-06-09 | Mitsubishi Heavy Ind Ltd | Pressure regulating device, and pressure testing device including the same |
| CN102297749A (en) * | 2011-08-05 | 2011-12-28 | 青岛市兰青环保工程有限公司 | Comprehensive test device for air tightness and water pressure resistance of mining mobile escape capsule |
| CN103323353A (en) * | 2013-07-08 | 2013-09-25 | 大连理工大学 | Dynamic water pressure generator capable of regulating frequency and pressure |
| CN106441718A (en) * | 2016-11-11 | 2017-02-22 | 中国船舶重工集团公司第七0三研究所 | Marine water-pressure-resistant seal pressurizing device |
| CN207515979U (en) * | 2017-11-17 | 2018-06-19 | 扬州曙光光电自控有限责任公司 | A kind of sealing Withstand test device of adjustable hydraulic pressure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107748040B (en) | 2024-01-16 |
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