CN106353080B - A kind of sealing ring straight line dynamic sealing characteristic experimental apparatus and experimental method - Google Patents
A kind of sealing ring straight line dynamic sealing characteristic experimental apparatus and experimental method Download PDFInfo
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- CN106353080B CN106353080B CN201610769196.XA CN201610769196A CN106353080B CN 106353080 B CN106353080 B CN 106353080B CN 201610769196 A CN201610769196 A CN 201610769196A CN 106353080 B CN106353080 B CN 106353080B
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Abstract
The invention discloses a kind of sealing ring straight line dynamic sealing characteristic experimental apparatus and experimental methods, the experimental provision includes pedestal, and rodless cylinder is installed on pedestal, there is an axis at the top of rodless cylinder, a sleeve assembly is set on axis, the bottom of the sleeve assembly is fixedly connected with the sliding block on rodless cylinder；Along between centers every three sealing ring mounting portions of setting inside sleeve assembly, sealing ring can be moved back and forth with sleeve assembly along axis after being packed into sealing ring mounting portion, the cavity passed through by axis is respectively also set between two adjacent sealing ring mounting portions inside sleeve assembly, regulator and pressure sensor are also installed in sleeve assembly surface.Sealing ring straight line dynamic sealing characteristic experimental apparatus disclosed in this invention, the sliding block of rodless cylinder drives sleeve assembly to move back and forth along axis, sealing ring is installed to mounting portion, i.e. analog sealing ring straight reciprocating when working condition, sealing ring and axis constitute friction pair in the process, can test to the frictional behavior of sealing ring.
Description
Technical field
The invention belongs to experiment test device fields, in particular to one of field sealing ring straight line dynamic sealing characteristic
Experimental provision and experimental method.
Background technique
The frictional behavior of sealing ring had not only depended on the property of sealing ring itself, but also depended on its working condition.Therefore, exist
When studying the frictional behavior of sealing ring, guarantee that experiment condition is critically important.Sealing ring frictional experiment device, it is necessary to assure groove
The secondary medium of size, sliding speed, pressure, friction.However, existing major part experimental provision is (including frictional force meter and end
Face strigil) be not able to satisfy it is above-mentioned to sealing ring frictional experiment proposed requirement.
It is tested such as in actual machine or on model, and is not widely practiced in since error is big to various works
Sealing ring frictional behavior under the conditions of work is furtherd investigate.
Straight line dynamic sealing experiment of friction performance device in the prior art is as shown in Figure 1, this kind of device can only measure sealing
Circle at one end bear pressure when dynamic friction characteristic, can not measure sealing ring both ends all bear pressure (same to high pressure, same to low pressure,
One end low pressure one end high pressure) when dynamic friction characteristic.
Summary of the invention
The technical problem to be solved by the invention is to provide one kind can be to carrying out straight reciprocating in hydraulic device
Sealing ring carry out frictional behavior experiment experimental provision and experimental method.
The present invention adopts the following technical scheme:
A kind of sealing ring straight line dynamic sealing characteristic experimental apparatus, the improvement is that: the experimental provision includes bottom
, rodless cylinder is installed on pedestal, there is an axis at the top of rodless cylinder, one end of the axis by pull pressure sensor and is fixed on
Support on pedestal is connected, and the other end is connected with the bracket being fixed on the base, and a sleeve assembly is set on axis, described
The bottom of sleeve assembly is fixedly connected with the sliding block on rodless cylinder；Along between centers every three sealing rings of setting inside sleeve assembly
Mounting portion, sealing ring can be moved back and forth with sleeve assembly along axis after being packed into sealing ring mounting portion, also adjacent inside sleeve assembly
Two sealing ring mounting portions between the cavity passed through by axis is respectively set, each one with sleeve assembly surface of the cavity
Liquid injection port communicates, and the sleeve assembly surface is also equipped with two regulators and two pressure sensors, each pressure regulation
Device is communicated with a cavity to adjust the liquid pressure in the cavity, each pressure sensor with a cavity phase
The liquid pressure just monitored in the cavity is passed to, the displacement sensor for measuring sleeve assembly displacement is also installed on pedestal.
Further, the rodless cylinder provides power by air pump.
Further, the liquid injection port is connected by pipeline with hydraulic pump.
Further, the pull pressure sensor and displacement sensor are electrically connected with display.
Further, the regulator includes the valve body with cavity, and valve body is communicated by valve port with cavity, and valve body is empty
Intracavitary setting Rectangular Spring, one end of the Rectangular Spring are connected with spool, and the protrusion of the spool protrudes into valve port, and
Sealing ring is provided between spool protrusion and valve port, the other end of Rectangular Spring is then connected with spring base, and is mounted on
The adjusting screw rod that locking nut on valve body is threadedly coupled can be inserted in cavity and push against spring base, and rotation adjusting screw rod can be with
Change the decrement of Rectangular Spring by spring base.
Further, upper cover is installed on the valve body, in the cavity of one end insertion valve body of the upper cover, is installed on upper lid
Locking nut, the adjusting screw rod being threadedly coupled with locking nut pass through in the cavity of above-mentioned upper cover insertion valve body and push against spring
Seat.
Further, washer, and the position phase of washer and sealing ring are additionally provided between spool protrusion and valve port
It is adjacent.
A kind of sealing ring straight line dynamic sealing characteristic test method is filled using above-mentioned sealing ring straight line dynamic sealing characteristic test
It sets, it is improved in that including the following steps:
In (1) three sealing ring mounting portion, it is B between A, C that both ends, which are A sealing ring mounting portion and C sealing ring mounting portion,
Sealing ring mounting portion is the first cavity between A, B, is the second cavity between B, C；
(2) it opens air pump and provides power for rodless cylinder operation, the sliding block of rodless cylinder is made to drive sleeve assembly past along axis
Multiple movement, while small-power operating is vented cavity after hydraulic pump connection liquid injection port, arranges while sleeve assembly moves back and forth
Air in cavity out closes air pump and hydraulic pump after the air in cavity empties；Can also in A, after C installs sealing ring,
Hydraulic pump is pressed by the liquid injection port communicated with the first cavity to the first cavity, is vented from the liquid injection port communicated with the second cavity,
After air in cavity empties, air pump and hydraulic pump are closed；
(3) when the liquid pressure in the first cavity is equal to the liquid pressure P in the second cavity:
(31) sealing ring is installed in A and C, B does not install sealing ring first；
(32) hydraulic pump pressurized liquid injection body into cavity is opened, by liquid pressure in pressure sensor monitoring cavity,
Liquid pressure is P and maintains to close hydraulic pump after stablizing in cavity, starts displacement sensor and pull pressure sensor, opens air pump
Make the sliding block of rodless cylinder that sleeve assembly be driven to move back and forth along axis, is back and forth taken three times after sleeve assembly movement velocity V stablizes
Pull pressure sensor registration F, F is equal to the sum of resistance suffered by sealing ring at A, C, since environment is the same at A, C, resistance at this time
FA=FC；
(33) air pump is closed, discharge holds intracavity liquid, removes sleeve assembly, and axis and sleeve assembly wiped clean are pacified in B
Dress needs sealing ring to be tested, and A and C are remained unchanged；Opening hydraulic pump pressurizes into cavity infuses the liquid of same pressure P, starts
Displacement sensor and pull pressure sensor, opening air pump makes the sliding block of rodless cylinder that sleeve assembly be driven to move back and forth along axis, to
Sleeve assembly movement velocity V back and forth takes sealing ring friction F at pull pressure sensor registration a F1, B after stablizing three timesB
=F1-F records and analyzes P, V, FBBetween connection；
(34) the movement velocity gradient of sleeve assembly is set, since 0.5m/s, is incremented by 0.1m/s every time, adds to highest
2m/s, each speed repeat step (31)-(33)；
(35) it is adjusted in cavity after liquid pressure by regulator, repeat the above steps (31)-(34)；
(4) when the liquid pressure in the first cavity is not equal to the liquid pressure in the second cavity, high pressure P1, low pressure P2:
(41) sealing ring is installed in A and C, B does not install sealing ring first；
(42) hydraulic pump pressurized liquid injection body into cavity is opened, by liquid pressure in pressure sensor monitoring cavity,
Liquid pressure to low pressure P2 and maintains to close hydraulic pump after stablizing in cavity, starts displacement sensor and pull pressure sensor, beats
Opening air pump makes the sliding block of rodless cylinder that sleeve assembly be driven to move back and forth along axis, reciprocal after sleeve assembly movement velocity V stablizes
A pull pressure sensor registration F1 is taken three times, and F1 is equal to the sum of resistance suffered by sealing ring F1=F at A, C at this timea+Fc, due to A, C
It is the same to locate environment, resistance Fa=Fc, therefore F1=2Fc, air pump is closed, discharge holds intracavity liquid, removes sleeve assembly, by axis and set
Cartridge module wiped clean；
(43) hydraulic pump pressurized liquid injection body into cavity is opened, by liquid pressure in pressure sensor monitoring cavity,
Liquid pressure to high pressure P1 and maintains to close hydraulic pump after stablizing in cavity, starts displacement sensor and pull pressure sensor, beats
Opening air pump makes the sliding block of rodless cylinder that sleeve assembly be driven to move back and forth along axis, reciprocal after sleeve assembly movement velocity V stablizes
A pull pressure sensor registration F2 is taken three times, and F2 is equal to the sum of resistance suffered by sealing ring F2=F at A, C at this timeA+FC, due to A, C
It is the same to locate environment, resistance FA=FC, therefore F2=2FA, air pump is closed, discharge holds intracavity liquid, removes sleeve assembly, by axis and set
Cartridge module wiped clean；
(44) hydraulic pump pressurized liquid injection body into cavity is opened, by liquid pressure in pressure sensor monitoring cavity,
Liquid pressure is stablized to high pressure P1 and maintaining in first cavity, liquid pressure to low pressure P2 and maintains to close after stablizing in the second cavity
Hydraulic pump is closed, displacement sensor and pull pressure sensor are started, opening air pump makes the sliding block of rodless cylinder drive sleeve assembly edge
Axis moves back and forth, and back and forth a pull pressure sensor registration F3 is taken three times after sleeve assembly movement velocity V stablizes, at A
Equally, at C equally, F3 is equal to resistance suffered by sealing ring at A, C with sealing ring at B for environment and step (42) for environment and step (43)
The sum of friction, i.e. F3=FA+ Fc+FB= FB+ 1/2F1+1/2F2, FB=F3-1/2F1-1/2F2 records and analyzes P1,
P2, V, FBBetween connection；
(45) the movement velocity gradient of sleeve assembly is set, since 0.5m/s, is incremented by 0.1m/s every time, adds to highest
2m/s, each speed repeat step (41)-(44)；
(46) it is adjusted in cavity after liquid pressure by regulator, repeat the above steps (41)-(45).
Further, the value range of liquid pressure P is 0-20MPa.
It further, is 0-2 MPa in the pressure differential range of liquid pressure mesohigh P1 and low pressure P2.
Further, the liquid can be seawater, fresh water or hydraulic oil.
The beneficial effects of the present invention are:
The sliding block of sealing ring straight line dynamic sealing characteristic experimental apparatus disclosed in this invention, rodless cylinder drives sleeve assembly
Along axis move back and forth, sealing ring is installed to B sealing ring mounting portion, i.e., analog sealing ring straight reciprocating when work
State, sealing ring and axis constitute friction pair in the process, can test to the frictional behavior of sealing ring.It is straight in sealing ring
In line reciprocating movement, sealing ring is calculated in the state of certain pressure and speed by the registration of pull pressure sensor
Suffered frictional force is analyzed with this speed same pressure differential is different or the identical speed different situations lower seal of pressure difference is rubbed
Wipe characteristic.
Sealing ring straight line dynamic sealing characteristic experimental apparatus disclosed in this invention adjusts sleeve assembly by rodless cylinder
Movement speed V, and can need to inject the liquid of corresponding pressure P, liquid pressure P in the first cavity and the second cavity according to experiment
It can be monitored by the way that the pressure sensor on sleeve assembly surface is arranged in.
Sealing ring straight line dynamic sealing characteristic test method disclosed in this invention utilizes above-mentioned sealing ring straight line dynamic sealing
Characteristic experimental apparatus, easy to operate, error is small, it may be convenient to carry out experimental study to the frictional behavior of sealing ring.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of straight line dynamic sealing experiment of friction performance device in the prior art；
Fig. 2 is the structural schematic diagram of experimental provision disclosed in the embodiment of the present invention 1；
Fig. 3 is the structural schematic diagram of experimental provision middle sleeve component disclosed in the embodiment of the present invention 1；
Fig. 4 is the structural schematic diagram of regulator in experimental provision disclosed in the embodiment of the present invention 1.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, right below in conjunction with drawings and examples
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
Embodiment 1, as shown in Fig. 2, present embodiment discloses a kind of sealing ring straight line dynamic sealing characteristic experimental apparatus, it is described
Experimental provision include pedestal 9, rodless cylinder 12 is installed, an axis 7, one end of the axis 7 are arranged at the top of rodless cylinder 12 on pedestal 9
It is connected by pull pressure sensor 2 with the support 10 being fixed on pedestal 9, the other end and 8 phase of bracket being fixed on pedestal 9
It connects, a sleeve assembly 6, the bottom of the sleeve assembly 6 and the fixed company of sliding block 11 on rodless cylinder 12 is set on axis 7
It connects；As shown in figure 3, being spaced setting three sealing ring mounting portions A, B, C along axis 7 inside sleeve assembly 6, sealing ring is packed into sealing
Can be moved back and forth with sleeve assembly 6 along axis 7 after enclosing mounting portion, inside sleeve assembly 6 also two adjacent sealing ring mounting portions it
Between cavity D, the E passed through by axis 7 is respectively set, the cavity is respectively communicated with a liquid injection port 4 on sleeve assembly surface, institute
The sleeve assembly surface stated is also equipped with two regulators 5 and two pressure sensors 3, each regulator 5 is with one
A cavity communicates to adjust the liquid pressure in the cavity, each pressure sensor 3 is communicated with a cavity to supervise
The liquid pressure in the cavity is surveyed, the displacement sensor 1 for measuring 6 displacement of sleeve assembly is also installed on pedestal 9.
Sealing ring straight line dynamic sealing characteristic experimental apparatus disclosed in the present embodiment, the sliding block band moving sleeve group of rodless cylinder
Part along axis move back and forth, sealing ring is installed to B sealing ring mounting portion, i.e., analog sealing ring straight reciprocating when work
Make state, sealing ring and axis constitute friction pair in the process, can test to the frictional behavior of sealing ring.In sealing ring
During straight reciprocating, sealing ring is calculated in the state of certain pressure and speed by the registration of pull pressure sensor
Lower suffered frictional force is analyzed with this speed same pressure differential is different or the identical speed different situations lower seal of pressure difference
Frictional behavior.
Alternatively, in the present embodiment, the rodless cylinder provides power by air pump.It is described
Liquid injection port be connected by pipeline with hydraulic pump.The pull pressure sensor and displacement sensor is electrically connected with display
It connects.
As shown in figure 4, the regulator 5 includes the valve body 51 with cavity, valve body 51 passes through valve port 52 and cavity phase
It is logical, Rectangular Spring 53 is set in valve cavity, and one end of the Rectangular Spring 53 is connected with spool 54, the protrusion of the spool 54
Portion protrudes into valve port 52, and sealing ring 55, the other end of Rectangular Spring 53 are provided between spool protrusion and valve port 52
Then it is connected with spring base 56, sky can be inserted in the adjusting screw rod 58 being threadedly coupled with the locking nut 57 being mounted on valve body 51
Intracavitary and push against spring base 56, rotation adjusting screw rod 58 can pass through the decrement that spring base 56 changes Rectangular Spring 53.It is described
Valve body 51 on install upper cover 59, the upper cover 59 one end insertion valve body 51 cavity in, installation locking nut 57 in upper cover 59,
The adjusting screw rod 58 being threadedly coupled with locking nut 57 passes through above-mentioned upper cover 59 and is inserted into the cavity of valve body 51 and pushes against spring
Seat 56.Washer 510, and the position phase of washer 510 and sealing ring 55 are additionally provided between 54 protrusion of spool and valve port 52
It is adjacent.
The voltage-regulation principle of regulator is: the decrement of Rectangular Spring is adjusted by the precession and back-out of adjusting screw rod,
Rectangular Spring compresses spool, certain pressure is generated to intracavity liquid is held, to control the pressure for holding intracavity liquid.
The present embodiment also discloses a kind of sealing ring straight line dynamic sealing characteristic test method, uses above-mentioned sealing ring straight line
Dynamic sealing characteristic experimental apparatus, includes the following steps:
In (1) three sealing ring mounting portion, it is B between A, C that both ends, which are A sealing ring mounting portion and C sealing ring mounting portion,
It is the second cavity E that sealing ring mounting portion, which is between the first cavity D, B, C between A, B,；
(2) it opens air pump and provides power for rodless cylinder operation, the sliding block of rodless cylinder is made to drive sleeve assembly past along axis
Multiple movement, while small-power operating is vented cavity after hydraulic pump connection liquid injection port, arranges while sleeve assembly moves back and forth
Air in cavity out closes air pump and hydraulic pump after the air in cavity empties (about 8 ~ 9 seconds)；It can also be installed in A, C
After sealing ring, hydraulic pump is pressed by the liquid injection port communicated with the first cavity D to the first cavity D, from what is communicated with the second cavity E
Liquid injection port exhaust closes air pump and hydraulic pump after the air in cavity empties (about 6 ~ 7 seconds)；
(3) when the liquid pressure in the first cavity D is equal to the liquid pressure P in the second cavity E:
(31) sealing ring is installed in A and C, B does not install sealing ring first；
(32) hydraulic pump pressurized liquid injection body into cavity is opened, by liquid pressure in pressure sensor monitoring cavity,
Liquid pressure is P and maintains to close hydraulic pump after stablizing in cavity, starts displacement sensor and pull pressure sensor, opens air pump
Make the sliding block of rodless cylinder that sleeve assembly be driven to move back and forth along axis, is back and forth taken three times after sleeve assembly movement velocity V stablizes
Pull pressure sensor registration F, F(takes the average value after registration more than six times at this time) it is equal to resistance suffered by sealing ring at A, C
The sum of, since environment is the same at A, C, resistance FA=FC；
(33) air pump is closed, discharge holds intracavity liquid, removes sleeve assembly, and axis and sleeve assembly wiped clean are pacified in B
Dress needs sealing ring to be tested, and A and C are remained unchanged；Opening hydraulic pump pressurizes into cavity infuses the liquid of same pressure P, starts
Displacement sensor and pull pressure sensor, opening air pump makes the sliding block of rodless cylinder that sleeve assembly be driven to move back and forth along axis, to
Sleeve assembly movement velocity V back and forth takes sealing ring friction F at pull pressure sensor registration a F1, B after stablizing three timesB
=F1-F, wherein F1 is the average value taken after registration more than six times, records and analyzes P, V, FBBetween connection；
(34) the movement velocity gradient of sleeve assembly is set, since 0.5m/s, is incremented by 0.1m/s every time, adds to highest
2m/s, each speed repeat step (31)-(33)；
(35) it is adjusted in cavity after liquid pressure by regulator, repeat the above steps (31)-(34)；
(4) when the liquid pressure in the first cavity D is not equal to the liquid pressure in the second cavity E, high pressure P1, low pressure
P2:
(41) sealing ring is installed in A and C, B does not install sealing ring first；
(42) hydraulic pump pressurized liquid injection body into cavity is opened, by liquid pressure in pressure sensor monitoring cavity,
Liquid pressure to low pressure P2 and maintains to close hydraulic pump after stablizing in cavity, starts displacement sensor and pull pressure sensor, beats
Opening air pump makes the sliding block of rodless cylinder that sleeve assembly be driven to move back and forth along axis, reciprocal after sleeve assembly movement velocity V stablizes
A pull pressure sensor registration F1 is taken three times, and F1(takes the average value after registration more than six times at this time) it is equal to sealing ring at A, C
The sum of suffered resistance F1=Fa+Fc, since environment is the same at A, C, resistance Fa=Fc, therefore F1=2Fc, air pump is closed, is discharged in cavity
Liquid removes sleeve assembly, by axis and sleeve assembly wiped clean；
(43) hydraulic pump pressurized liquid injection body into cavity is opened, by liquid pressure in pressure sensor monitoring cavity,
Liquid pressure to high pressure P1 and maintains to close hydraulic pump after stablizing in cavity, starts displacement sensor and pull pressure sensor, beats
Opening air pump makes the sliding block of rodless cylinder that sleeve assembly be driven to move back and forth along axis, reciprocal after sleeve assembly movement velocity V stablizes
A pull pressure sensor registration F2 is taken three times, and F2(takes the average value after registration more than six times at this time) it is equal to sealing ring at A, C
The sum of suffered resistance F2=FA+FC, since environment is the same at A, C, resistance FA=FC, therefore F2=2FA, air pump is closed, is discharged in cavity
Liquid removes sleeve assembly, by axis and sleeve assembly wiped clean；
(44) hydraulic pump pressurized liquid injection body into cavity is opened, by liquid pressure in pressure sensor monitoring cavity,
Liquid pressure is stablized to high pressure P1 and maintaining in first cavity D, liquid pressure to low pressure P2 and maintains after stablizing in the second cavity E
Hydraulic pump is closed, displacement sensor and pull pressure sensor are started, opening air pump makes the sliding block of rodless cylinder drive sleeve assembly
It is moved back and forth along axis, back and forth a pull pressure sensor registration F3 is taken three times after sleeve assembly movement velocity V stablizes, due to A
Locating environment and step (43), equally, at C equally, F3 is equal to resistance suffered by sealing ring at A, C with sealing at B for environment and step (42)
Enclose the sum of friction, i.e. F3=FA+ Fc+FB= FB+ 1/2F1+1/2F2, wherein F3 is flat after taking registration more than six times
Mean value, FB=F3-1/2F1-1/2F2 records and analyzes P1, P2, V, FBBetween connection；
(45) the movement velocity gradient of sleeve assembly is set, since 0.5m/s, is incremented by 0.1m/s every time, adds to highest
2m/s, each speed repeat step (41)-(44)；
(46) it is adjusted in cavity after liquid pressure by regulator, repeat the above steps (41)-(45).
Alternatively, in the present embodiment, the value range of liquid pressure P is 0-20MPa.?
The pressure differential range of liquid pressure mesohigh P1 and low pressure P2 are 0-2 MPa.The liquid can be seawater, fresh water or liquid
Pressure oil.
After single analysis, data are arranged, reasonable series V, P, F, S data is taken to draw frictional behavior using mapping software
Scheme (V-F, P-F, S-F), respective function expression formula is found out in examination, and reality disclosed in the present embodiment can be used in resulting function expression
Experiment device and experimental method are verified.
After experiment, air pump is closed, discharge holds intracavity liquid, removes sleeve assembly, axis and sleeve assembly are wiped
Only.
Claims (11)
1. a kind of sealing ring straight line dynamic sealing characteristic experimental apparatus, it is characterised in that: the experimental provision includes pedestal, pedestal
Upper installation rodless cylinder, there is an axis at the top of rodless cylinder, and one end of the axis by pull pressure sensor and is fixed on the base
Support be connected, the other end is connected with the bracket being fixed on the base, and a sleeve assembly, the sleeve group are set on axis
The bottom of part is fixedly connected with the sliding block on rodless cylinder；It is installed along between centers every three sealing rings of setting inside sleeve assembly
Portion, sealing ring can be moved back and forth with sleeve assembly along axis after being packed into sealing ring mounting portion, also adjacent two inside sleeve assembly
One cavity passed through by axis, a cavity respectively fluid injection with sleeve assembly surface are respectively set between sealing ring mounting portion
Mouth communicates, and the sleeve assembly surface is also equipped with two regulators and two pressure sensors, each regulator
It communicates with a cavity to adjust the liquid pressure in the cavity, each pressure sensor is mutually passed to a cavity
Just the liquid pressure in the cavity is monitored, the displacement sensor for measuring sleeve assembly displacement is also installed on pedestal.
2. sealing ring straight line dynamic sealing characteristic experimental apparatus according to claim 1, it is characterised in that: the no bar gas
Cylinder provides power by air pump.
3. sealing ring straight line dynamic sealing characteristic experimental apparatus according to claim 1, it is characterised in that: the liquid injection port
It is connected by pipeline with hydraulic pump.
4. sealing ring straight line dynamic sealing characteristic experimental apparatus according to claim 1, it is characterised in that: the pressure
Sensor and displacement sensor are electrically connected with display.
5. sealing ring straight line dynamic sealing characteristic experimental apparatus according to claim 1, it is characterised in that: the pressure regulation dress
It sets including the valve body with cavity, valve body is communicated by valve port with cavity, Rectangular Spring is set in valve cavity, the Rectangular Spring
One end is connected with spool, and the protrusion of the spool protrudes into valve port, and is provided between spool protrusion and valve port
The other end of sealing ring, Rectangular Spring is then connected with spring base, the tune being threadedly coupled with the locking nut being mounted on valve body
Section screw rod can be inserted in cavity and push against spring base, and rotation adjusting screw rod can change the compression of Rectangular Spring by spring base
Amount.
6. sealing ring straight line dynamic sealing characteristic experimental apparatus according to claim 5, it is characterised in that: on the valve body
Upper cover is installed, one end of the upper cover is inserted into the cavity of valve body, and it is upper to cover installation locking nut, it is threadedly coupled with locking nut
Adjusting screw rod passes through in the cavity of above-mentioned upper cover insertion valve body and pushes against spring base.
7. sealing ring straight line dynamic sealing characteristic experimental apparatus according to claim 5, it is characterised in that: in spool protrusion
Washer is additionally provided between valve port, and washer is adjacent with the position of sealing ring.
8. a kind of sealing ring straight line dynamic sealing characteristic test method is filled using above-mentioned sealing ring straight line dynamic sealing characteristic test
It sets, which comprises the steps of:
In (1) three sealing ring mounting portion, both ends are A sealing ring mounting portion and C sealing ring mounting portion, are sealed between A, C for B
Mounting portion is enclosed, is the first cavity between A, B, is the second cavity between B, C；
(2) it opens air pump and provides power for rodless cylinder operation, make the sliding block of rodless cylinder that sleeve assembly be driven back and forth to transport along axis
It is dynamic, while small-power operating is vented cavity after hydraulic pump connection liquid injection port, discharge is held while sleeve assembly moves back and forth
Intracavitary air closes air pump and hydraulic pump after the air in cavity empties；Or in A, after C installs sealing ring, hydraulic pump
It is pressed by the liquid injection port communicated with the first cavity to the first cavity, from the liquid injection port exhaust communicated with the second cavity, in cavity
After interior air empties, air pump and hydraulic pump are closed；
(3) when the liquid pressure in the first cavity is equal to the liquid pressure P in the second cavity:
(31) sealing ring is installed in A and C, B does not install sealing ring first；
(32) hydraulic pump pressurized liquid injection body into cavity is opened, by liquid pressure in pressure sensor monitoring cavity, in cavity
Interior liquid pressure is P and maintains to close hydraulic pump after stablizing, and starts displacement sensor and pull pressure sensor, and opening air pump makes nothing
The sliding block of bar cylinder drives sleeve assembly to move back and forth along axis, back and forth takes three times after sleeve assembly movement velocity V stablizes primary
Pull pressure sensor registration F, F is equal to the sum of resistance suffered by sealing ring at A, C, since environment is the same at A, C, resistance F at this timeA=
FC；
(33) air pump is closed, discharge holds intracavity liquid, removes sleeve assembly, and by axis and sleeve assembly wiped clean, installing in B is needed
Sealing ring to be tested, A and C are remained unchanged；Opening hydraulic pump pressurizes into cavity infuses the liquid of same pressure P, starting displacement
Sensor and pull pressure sensor, opening air pump makes the sliding block of rodless cylinder that sleeve assembly be driven to move back and forth along axis, to sleeve
Component movement rate V back and forth takes sealing ring friction F at pull pressure sensor registration a F1, B after stablizing three timesB=
F1-F records and analyzes P, V, FBBetween connection；
(34) the movement velocity gradient of sleeve assembly is set, since 0.5m/s, is incremented by 0.1m/s every time, adds to highest 2m/s,
Each speed repeats step (31)-(33)；
(35) it is adjusted in cavity after liquid pressure by regulator, repeat the above steps (31)-(34)；
(4) when the liquid pressure in the first cavity is not equal to the liquid pressure in the second cavity, high pressure P1, low pressure P2:
(41) sealing ring is installed in A and C, B does not install sealing ring first；
(42) hydraulic pump pressurized liquid injection body into cavity is opened, by liquid pressure in pressure sensor monitoring cavity, in cavity
Interior liquid pressure is to low pressure P2 and maintains to close hydraulic pump after stablizing, and starts displacement sensor and pull pressure sensor, opens gas
Pump makes the sliding block of rodless cylinder that sleeve assembly be driven to move back and forth along axis, after sleeve assembly movement velocity V stablizes back and forth three times
A pull pressure sensor registration F1 is taken, F1 is equal to the sum of resistance suffered by sealing ring F1=F at A, C at this timea+Fc, at A, C
Environment is the same, resistance Fa=Fc, therefore F1=2Fc, air pump is closed, discharge holds intracavity liquid, removes sleeve assembly, by axis and set
Cartridge module wiped clean；
(43) hydraulic pump pressurized liquid injection body into cavity is opened, by liquid pressure in pressure sensor monitoring cavity, in cavity
Interior liquid pressure is to high pressure P1 and maintains to close hydraulic pump after stablizing, and starts displacement sensor and pull pressure sensor, opens gas
Pump makes the sliding block of rodless cylinder that sleeve assembly be driven to move back and forth along axis, after sleeve assembly movement velocity V stablizes back and forth three times
A pull pressure sensor registration F2 is taken, F2 is equal to the sum of resistance suffered by sealing ring F2=F at A, C at this timeA+FC, at A, C
Environment is the same, resistance FA=FC, therefore F2=2FA, air pump is closed, discharge holds intracavity liquid, removes sleeve assembly, by axis and set
Cartridge module wiped clean；
(44) hydraulic pump pressurized liquid injection body into cavity is opened, by liquid pressure in pressure sensor monitoring cavity, first
Liquid pressure is stablized to high pressure P1 and maintaining in cavity, liquid pressure to low pressure P2 and maintains to close liquid after stablizing in the second cavity
Press pump starts displacement sensor and pull pressure sensor, and opening air pump makes the sliding block of rodless cylinder drive sleeve assembly past along axis
Multiple movement back and forth takes a pull pressure sensor registration F3 after sleeve assembly movement velocity V stablizes, due to environment at A three times
Equally, at C equally, F3 is equal to resistance suffered by sealing ring at A, C with suffered by sealing ring at B for environment and step (42) with step (43)
The sum of frictional force, i.e. F3=FA+Fc+FB=FB+ 1/2F1+1/2F2, FB=F3-1/2F1-1/2F2 records and analyzes P1, P2, V, FB
Between connection；
(45) the movement velocity gradient of sleeve assembly is set, since 0.5m/s, is incremented by 0.1m/s every time, adds to highest 2m/s,
Each speed repeats step (41)-(44)；
(46) it is adjusted in cavity after liquid pressure by regulator, repeat the above steps (41)-(45).
9. sealing ring straight line dynamic sealing characteristic test method according to claim 8, it is characterised in that: liquid pressure P's
Value range is 0-20MPa.
10. sealing ring straight line dynamic sealing characteristic test method according to claim 8, it is characterised in that: in liquid pressure
The pressure differential range of mesohigh P1 and low pressure P2 are 0-2MPa.
11. sealing ring straight line dynamic sealing characteristic test method according to claim 8, it is characterised in that: the liquid
It is seawater, fresh water or hydraulic oil.
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| CN108871752A (en) * | 2018-06-28 | 2018-11-23 | 中车四方车辆有限公司 | The detection device and its detection method of door of railway vehicle rodless cylinder |
| CN111366356B (en) * | 2020-03-17 | 2022-04-01 | 上海宇航系统工程研究所 | System for testing friction force and slip characteristic of O-shaped rubber ring in pressurizing state |
| CN112683522A (en) * | 2020-11-18 | 2021-04-20 | 南京航空航天大学 | Device and method for measuring friction force of sealing ring under given pressure |
| CN112629847B (en) * | 2021-01-06 | 2023-09-29 | 四川云游九天科技有限公司 | O-shaped ring sealing resistance experiment platform and sealing resistance test method |
| CN114199552B (en) * | 2021-12-14 | 2023-03-31 | 浙江大学 | Device and method for testing reciprocating motion friction force and assembly force of sealing ring |
| CN115218845B (en) * | 2022-06-24 | 2024-06-11 | 中国第一汽车股份有限公司 | Method, equipment and medium for measuring compression amount of sealing strip under whole vehicle condition |
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