CN107941502A - Measure the device of different pressure action lower seal stiction and kinetic force of friction - Google Patents
Measure the device of different pressure action lower seal stiction and kinetic force of friction Download PDFInfo
- Publication number
- CN107941502A CN107941502A CN201711433876.5A CN201711433876A CN107941502A CN 107941502 A CN107941502 A CN 107941502A CN 201711433876 A CN201711433876 A CN 201711433876A CN 107941502 A CN107941502 A CN 107941502A
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- Prior art keywords
- electric pushrod
- friction
- pressure
- liquid
- lower seal
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- 230000009471 action Effects 0.000 title claims abstract description 10
- 238000007789 sealing Methods 0.000 claims abstract description 36
- 239000007788 liquid Substances 0.000 claims abstract description 26
- 239000000758 substrate Substances 0.000 claims abstract description 15
- 239000000203 mixture Substances 0.000 claims description 4
- 239000012530 fluid Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 7
- 238000012360 testing method Methods 0.000 description 3
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
- G01M13/00—Testing of machine parts
- G01M13/005—Sealing rings
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/0028—Force sensors associated with force applying means
- G01L5/0038—Force sensors associated with force applying means applying a pushing force
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
The present invention provides a kind of device for measuring different pressure action lower seal stiction and kinetic force of friction, is made of electric pushrod, electric pushrod base, electric pushrod back seat, closure piston, liquid storage pipeline and fixing device, liquid pressure sensor, pull pressure sensor, short sleeve, long sleeve, substrate.In the left side of device, electric pushrod external part is connected by long sleeve with closure piston, and sealing ring is installed on closure piston, makes to form sealing space in liquid storage pipeline.On the right side of device, pull pressure sensor both ends are connected by short sleeve with electric pushrod external part, closure piston respectively.Electric pushrod and liquid storage pipeline are fixed on substrate.Valve is closed, is moved by programme-control electric pushrod, liquid-pressure pick-up can measure that pipeline internal pressure is strong, and pull pressure sensor can measure electric pushrod thrust in real time in real time.The size of sealing ring friction subtracts the difference that liquid pressure functions the product of area equal to electric pushrod thrust.
Description
Technical field
The invention belongs to sealing ring friction measurement field, is related to a kind of different pressure action lower seal static friction of measurement
The device of power and kinetic force of friction.
Background technology
Sealing ring is important sealing element, has the characteristics that cost is relatively low, compact-sized, easy for installation, good airproof performance,
It is widely applied in fields such as hydraulic pressure, chemical industry, fire-fightings.
The frictional force that the sealing performance of sealing ring is subject to it has substantial connection.Frictional force is design and selects sealing ring
During the influence factor that can not ignore.In the case of leakproofness is preferable, frictional force is generally also larger；And larger frictional force
It can aggravate the abrasion of sealing ring again, influence the flexibility of movement parts, reduce sealing ring service life.
The frictional force that sealing ring is subject to includes stiction and kinetic force of friction, their inhibitions to sealing ring are sent out respectively
Life is in sealing ring and opposing stationary contact element and they occur in relative movements.Stiction and kinetic force of friction are all
The working characteristics of sealing ring is had a major impact.
Experiment test is the important means for measuring sealing ring friction.By testing data needed for acquisition, to realizing
Reliable sealing, extend sealing ring service life, improve mechanism kinematic efficiency, is of great significance.Therefore, designing and developing to survey
The device of sealing ring frictional force is measured, it is necessary and practical value.
The content of the invention
It is an object of the invention to provide a kind of different pressure action lower seal kinetic force of frictions and stiction of measuring
Device.
To achieve the above object, the technical solution adopted by the present invention is：
A kind of device for measuring different pressure lower seal stiction and kinetic force of friction, is lived by electric pushrod (1), closure
Fill in (2), liquid storage pipeline and fixing device (3), liquid pressure sensor (4), electric pushrod base (5), electric pushrod back seat
(6), long sleeve (7), short sleeve (8), pull pressure sensor (9), substrate (10) composition.In the left side of device, electric pushrod (1)
External part is connected by long sleeve (7) with closure piston (2), and sealing ring (24) is installed on closure piston (2).It is right in device
Side, pull pressure sensor (9) both ends are connected by short sleeve (8) and electric pushrod (1) external part, closure piston (2) respectively.Electricity
Dynamic push rod (1) and liquid storage pipeline (3) are fixed on substrate (10).Ball valve (14) is closed, it is empty to form closing in liquid storage pipeline (3)
Between.Moved by programme-control electric pushrod (1), it is strong that liquid-pressure pick-up (4) can measure pipeline internal pressure in real time, and pressure passes
Sensor (9) can measure electric pushrod thrust in real time.The size of sealing ring friction subtracts liquid equal to electric pushrod thrust
Pressure and the difference of the product of active area.
The electric pushrod is solid by electric pushrod base (9), electric pushrod back seat (6), screw (11) and nut (12)
It is scheduled on substrate (10).Electric pushrod base (9) medial surface is contacted with electric pushrod (1) lateral surface, on electric pushrod base (9)
There is hole, can be fixed on bolt (11) on substrate (10).There is hole in electric pushrod back seat (6) side, and bolt (11) spiral shell can be used
Female (13) connection electric pushrod, there is groove in electric pushrod back seat (6) bottom surface, can be fixed on substrate (10).Electric pushrod (1) stretches out
End connects pull pressure sensor (9) by long sleeve (7) connection closure piston (2) by short sleeve (8).
The liquid storage pipeline and fixing device (3) are by four-way connection (13), ball valve (14), reducer union (15), straight pipeline
(16), bent sub (17), three to Threaded Connector Coupling (18), three articulations (19), two sealing pipelines (20), two pipeline bases
(21), two press strips (22), four bolt (11) compositions, each duct element junction ensures not reveal.Sealing pipeline
(20) inner wall is contacted with sealing ring (24), realizes sealing.
The closure piston (2) is made of the different cylinder of both ends diameter, and front end is fluted, installs sealing ring.It is described
Short sleeve (8), cylindrical, inside is blind hole, there is a circle threaded hole on cylindrical surface, is pushed away for connecting closure piston (2) or electricity
Bar (1) external part.There are threaded hole, the stud of connection pull pressure sensor (9) on (8) one transverse plane of short sleeve.
The long sleeve (7), in hollow cylindrical, inside is through hole, has two circle threaded holes on cylindrical surface, is connected by bolt
Connect electric putter (1) external part and closure piston (2).
The substrate (10), has threaded hole on relevant position, uses bolt (11) connection corresponding component.
Advantage of the invention is that：It is simple in structure, manufacture easy to process；The working environment of sealing ring can be simulated, is measured
Data are close to actual conditions；Sealing ring frictional force under different action of hydraulic force can be measured；Sealing ring can be measured
The stiction being subject to, can also measure the kinetic force of friction that sealing ring is subject to.
Brief description of the drawings
Fig. 1 is overall structure diagram of the present invention.
Fig. 2 is electric pushrod and fixing device schematic diagram
Fig. 3 is liquid storage pipeline and fixture structure schematic diagram
Fig. 4 connects electric pushrod and closure piston schematic diagram for long sleeve
Fig. 5 connects pull pressure sensor schematic diagram for short sleeve
Fig. 6 is stiction measuring principle schematic diagram
Fig. 7 is kinetic force of friction measuring principle schematic diagram
Embodiment
With reference to Fig. 1-5, a kind of device for measuring different pressures lower seal kinetic force of friction and stiction of the present invention, mainly
By electric pushrod (1), closure piston (2), liquid storage pipeline and fixing device (3), liquid pressure sensor (4), electric pushrod bottom
Seat (5), electric pushrod back seat (6), long sleeve (7), short sleeve (8), pull pressure sensor (9), substrate (10) composition.Assembling
When, each duct element is linked together by Fig. 2；Liquid pressure sensor (4) is installed on corresponding articulation (19)；Will
Pipeline base (21) is fixed on substrate (10), and the pipeline connected is placed on pipeline base (21), and press strip (22) is used
Bolt (11) is fixed on substrate (10)；Two sealing rings (24) are attached separately on two closure pistons (2), by two closure
Piston (2) is respectively put into two sealing pipelines (20)；Electric pushrod base (9) is fixed on substrate (10) with bolt (11)
On；Long sleeve (7) one end is sleeved on first electric pushrod (1) external part, after the other end is sleeved on first closure piston (2)
End.This electric pushrod (1) is installed on the electric pushrod base (9) in left side, adjusts gap, covered with bolt (23) by long
Cylinder (7), electric pushrod (1), closure piston (2) are connected；Two studs of pull pressure sensor (9) are screwed into two short sets respectively
In the threaded hole of cylinder (6), two short sleeves (8) are inserted in another closure piston (6) rear end and another electric pushrod respectively
(1) in external part, this electric pushrod (1) is placed on the electric pushrod base (9) on right side, adjusts gap, use bolt
(25) short sleeve (8), pull pressure sensor (9), electric pushrod (1), closure piston (2) are connected；By two electric pushrods (1)
It is connected to respectively with bolt (11) and nut (12) on two electric pushrod back seats (6), it is electronic by two with bolt (11)
Push rod back seat (6) is fixed on substrate (10)；Ball valve is opened, according to the operating mode to be measured, hydraulic pressure is added to liquid storage pipeline (3) is interior
Oil or water, close ball valve, and assembling is completed.
With reference to Fig. 1-3 and Fig. 6-7, after energization, the measured value of sensor is delivered to control system, passes through programme-control both sides
Electric pushrod (1) advances to suitable position, liquid pressure in liquid storage pipeline is reached Test Cycle requirement.At this time, if left side
Electric pushrod (1) halts, and right side electric pushrod (1) is advanced slowly until sealing ring (24) slides, you can measures this
The stiction that pressure lower seal (24) is subject to；Sealing ring (24) is slided if right side electric pushrod (1) advances, together
When left side electric pushrod (1) retreat maintain liquid storage pipeline in hydraulic coupling it is constant, this pressure lower seal (24) can be measured and be subject to
Kinetic force of friction.
With reference to Fig. 1, the geomery of substrate (10) is not unique, can meet to install and fix requirement.
Claims (4)
1. a kind of device for measuring different pressure action lower seal stiction and kinetic force of friction, mainly by electric pushrod (1),
Block piston (2), liquid storage pipeline and fixing device (3), liquid pressure sensor (4), electric pushrod base (5), electric pushrod
Back seat (6), long sleeve (7), short sleeve (8), pull pressure sensor (9), substrate (10) composition, it is characterised in that：During work, lead to
Cross programme-control electric pushrod (1) movement, after the liquid pressure in closing pipe line is reached setting value, pull pressure sensor (9)
The force value measured, subtracts closure piston (2) liquid force for being subject to, i.e. pressure lower seal (24) and sealing pipeline for this
(20) stiction or kinetic force of friction of inner wall.
2. the device according to claim 1 for measuring different pressure action lower seal stiction and kinetic force of friction, its
It is characterized in that：The adjusting of the liquid pressure in liquid storage pipeline (3) is closed, is that closure piston (2) movement is controlled by electric pushrod (1)
Realize.
3. the device according to claim 1 or 2 for measuring different pressure action lower seal stiction and kinetic force of friction,
It is characterized in that：Liquid storage pipeline (3) has four outlets, lives respectively with liquid-pressure pick-up (4), ball valve (15), two closure
(2) are filled in be connected.
4. the device according to claim 1 for measuring different pressure action lower seal stiction and kinetic force of friction, its
It is characterized in that：Both stiction of the measurable sealing ring under a certain fluid pressure, the also kinetic force of friction under this measurable pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711433876.5A CN107941502B (en) | 2017-12-26 | 2017-12-26 | Device for measuring static friction force and dynamic friction force of sealing ring under different pressure forces |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711433876.5A CN107941502B (en) | 2017-12-26 | 2017-12-26 | Device for measuring static friction force and dynamic friction force of sealing ring under different pressure forces |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107941502A true CN107941502A (en) | 2018-04-20 |
| CN107941502B CN107941502B (en) | 2024-02-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711433876.5A Active CN107941502B (en) | 2017-12-26 | 2017-12-26 | Device for measuring static friction force and dynamic friction force of sealing ring under different pressure forces |
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| CN (1) | CN107941502B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110672243A (en) * | 2019-09-29 | 2020-01-10 | 北京动力机械研究所 | Testing device capable of adjusting air inlet and exhaust high-temperature dynamic seal friction force |
| CN111929056A (en) * | 2020-09-03 | 2020-11-13 | 中国铁道科学研究院集团有限公司 | Sealing member motion resistance testing device |
| CN112781768A (en) * | 2020-01-08 | 2021-05-11 | 河南牛帕力学工程研究院 | Force sensor and hydraulic bearing device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110672243A (en) * | 2019-09-29 | 2020-01-10 | 北京动力机械研究所 | Testing device capable of adjusting air inlet and exhaust high-temperature dynamic seal friction force |
| CN112781768A (en) * | 2020-01-08 | 2021-05-11 | 河南牛帕力学工程研究院 | Force sensor and hydraulic bearing device |
| CN111929056A (en) * | 2020-09-03 | 2020-11-13 | 中国铁道科学研究院集团有限公司 | Sealing member motion resistance testing device |
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| Publication number | Publication date |
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| CN107941502B (en) | 2024-02-27 |
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