CN207515979U - 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
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- CN207515979U CN207515979U CN201721538323.1U CN201721538323U CN207515979U CN 207515979 U CN207515979 U CN 207515979U CN 201721538323 U CN201721538323 U CN 201721538323U CN 207515979 U CN207515979 U CN 207515979U
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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, component, 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 cavity, piston is connected by dynamic seal on sealer shell, one end of piston is inserted into sealer shell inner cavity, 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, water level sensor is also set up on exhaust outlet；The signal output end of water level sensor is connected to the input terminal for the solenoid electric valve being connect with water inlet.The utility model structure setting is simple, and noise is small, and the adjustment of hydraulic pressure is more accurately, conveniently, is conducive to accurately carry out pressure test to test object.
Description
Technical field
The utility model is related to the water pressure resistance technical field of measurement and test of instrument and equipment, component.
Background technology
Performance indicator when test each unit is frequently necessary to when designing underwater product in certain depth of water, at this moment can will be by
Test cell is positioned over full of water and has in the sealing container of certain hydraulic pressure, and the corresponding depth of water is simulated by adjusting hydraulic pressure, into
The further experiment of row.
Existing more mature method is to carry out the adjustment of hydraulic pressure, but exist by the combination of water pump and various valves
Such as water route is more complicated, pump working when noise it is larger etc. the shortcomings of.
Utility model content
The utility model aim is to propose a kind of sealing Withstand test device for the adjustable hydraulic pressure for facilitating experiment.
The utility model include sealer shell, set respectively on sealer shell water pressure gauge, pressure sensor and with it is close
Seal water inlet, discharge outlet and the exhaust outlet of device shell inner cavity connection, it is characterised in that：Pass through dynamic seal on the sealer shell
Piston is connected, one end of the piston is inserted into sealer shell inner cavity, and the other end connection piston of the piston is axially moved control
Motor processed；The water inlet, discharge outlet and exhaust outlet set corresponding solenoid electric valve respectively, and water is also set up on the exhaust outlet
Level sensor；The signal output end of the water level sensor is connected to the input terminal for the solenoid electric valve being connect 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。
By above formula it is found that when the volume for changing water, hydraulic pressure can be caused to make corresponding variation.
The utility model is exactly to be designed using principles above.
During experiment, each unit will be tested and be packed into 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 water level sensor on exhaust outlet shows and filled water.Water level
Sensor is used for ensureing that water inlet is automatically closed after water is filled in sealer shell.
The hydraulic pressure that control centre needs according to experiment drives piston to move axially by piston surge motion control motor
The hydraulic pressure in sealer shell is adjusted, 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 out signal to solenoid electric valve after the test, and closing water inlet opens exhaust outlet and discharge outlet,
Discharge the water in sealer shell.
The utility model structure setting is simple, and noise is small, and the adjustment of hydraulic pressure is more accurately, conveniently, and it is accurate right to be conducive to
Test object carries out pressure test.
Description of the drawings
Fig. 1 is a kind of structure diagram of the utility model.
Fig. 2 is the right side view of Fig. 1.
Fig. 3 be Fig. 2 A-A to rotation cut-away view.
Specific embodiment
First, apparatus structure explanation：
As shown in Figure 1, 2, 3, water pressure gauge 2, pressure sensor 3 are respectively arranged on sealer shell 1, respectively with sealer
Water inlet 4, discharge outlet 5 and the exhaust outlet 6 of 1 inner cavity of shell connection, also, water inlet 4, discharge outlet 5 and exhaust outlet 6 respectively set phase
The solenoid electric valve answered is opened or closed to the execution of water inlet 4, discharge outlet 5 and exhaust outlet 6 by corresponding solenoid electric valve to facilitate
Action.In addition, also setting up water level sensor on exhaust outlet 6, the signal output end of water level sensor is connected to be connected with water inlet 4
The input terminal of the solenoid electric valve connect.
Piston 8 is connected by dynamic seal 7 on sealer shell 1, one end of piston 8 is inserted into 1 inner cavity of sealer shell, separately
One end is then connect with piston surge motion control motor 9.
2nd, it applies：
This example is that the pressure resistance of dynamic sealing and static seal experimental rig tries under 3MPa hydraulic pressure to an angular encoder
It tests.
It is required that the attributes such as water proofing property, precision, the response of test encoder under 3mp hydraulic pressure, and can be with single -step operation.
Since tested encoder needs to be tested under rotation, thus the utility model on sealer shell 1 by another
One group of dynamic sealing device connects a rotation axis 11, and the inner end of rotation axis 11 is inserted into sealer shell 1, and with encoder assembles part
10 shaft is fixedly connected, and the outer end of rotation axis 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, sealer shell 1
Inner cavity can water filling volume be 962cm3, in 3MPa pressure, volume change is 0.138%*962cm3=1.323 cm3, such as piston
A diameter of 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 utility model is used for ensureing automatic after water is filled in sealer shell 1 using the water level sensor on exhaust outlet 6
Close 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 to move axially 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 adjusts 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 the test, opens exhaust outlet 6 and draining
Mouth 5 discharges the water in sealer shell 1.
During experiment when encoder assembles part 10 is sent out 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 cavity, 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 cavity, the piston it is another
End connection piston motion control motor；The water inlet, discharge outlet and exhaust outlet set corresponding solenoid electric valve respectively, described
Water level sensor is also set up on exhaust outlet；The signal output end of the water level sensor is connected to the electromagnetism control being connect with water inlet
The input terminal of valve processed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721538323.1U CN207515979U (en) | 2017-11-17 | 2017-11-17 | A kind of sealing Withstand test device of adjustable hydraulic pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721538323.1U CN207515979U (en) | 2017-11-17 | 2017-11-17 | A kind of sealing Withstand test device of adjustable hydraulic pressure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207515979U true CN207515979U (en) | 2018-06-19 |
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ID=62539138
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721538323.1U Active CN207515979U (en) | 2017-11-17 | 2017-11-17 | A kind of sealing Withstand test device of adjustable hydraulic pressure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207515979U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107748040A (en) * | 2017-11-17 | 2018-03-02 | 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 |
| CN110514370A (en) * | 2019-08-30 | 2019-11-29 | 安徽江淮汽车集团股份有限公司 | A kind of device for detecting sealability |
-
2017
- 2017-11-17 CN CN201721538323.1U patent/CN207515979U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107748040A (en) * | 2017-11-17 | 2018-03-02 | 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 |
| CN107748040B (en) * | 2017-11-17 | 2024-01-16 | 扬州曙光光电自控有限责任公司 | Sealing pressure-resistant test device capable of adjusting water pressure |
| CN110514370A (en) * | 2019-08-30 | 2019-11-29 | 安徽江淮汽车集团股份有限公司 | A kind of device for detecting sealability |
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