CN209117274U - A kind of graphite-seal ring installation testing tool of metal hard-sealing ball valve - Google Patents
A kind of graphite-seal ring installation testing tool of metal hard-sealing ball valve Download PDFInfo
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- CN209117274U CN209117274U CN201821600324.9U CN201821600324U CN209117274U CN 209117274 U CN209117274 U CN 209117274U CN 201821600324 U CN201821600324 U CN 201821600324U CN 209117274 U CN209117274 U CN 209117274U
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- graphite
- seal ring
- valve body
- valve
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Abstract
The utility model discloses a kind of graphite-seal rings of metal hard-sealing ball valve to install testing tool, including pedestal and pressing plate, the tool use the valve body, valve seat and seal ring seat of metal hard-sealing ball valve；The pedestal is detachably connected on the lower end of the valve body and seals the lower port of the valve body；The pressing plate is pressed on the upper end of the valve seat and by the channel seal of the valve seat, and the upper end inner wall of the upper surface and the valve body of the outer peripheral surface of the pressing plate and the valve seat surrounds the observation annular groove of the air-tightness for accommodating liquid.The utility model is able to solve all kinds of problems in the installation and debugging process of graphite-seal ring, simplifies debugging step, tests the sealing performance and affecting parameters of sealing ring, greatly improve the installation and debugging efficiency of metal hard-sealing ball valve.
Description
Technical field
The utility model relates to valve fields, relate in particular to a kind of graphite-seal ring installation of metal hard-sealing ball valve
Testing tool.
Background technique
With the propulsion of improvement and the energy-saving and emission-reduction of chemical process, more and more devices are constantly mentioning equipment requirement
There is the operating condition that high temperature and pressure deep-etching coexists in height, and low leakage requirement is also needed to meet under the operating condition, so demand is a kind of
The stop valve reliably cut off can be realized under this operating condition, because of ball valve the operation is stable, heat-resisting ability is strong, adapts to various harsh works
Condition, therefore metal hard-sealing ball valve comes into being.
Currently, the sealing ring of metal seal ball valve is technical problem recognized within the industry, graphite material high temperature high voltage resistant resists
Oxidation is not reacted with existing most media, so being one of ideal material of sealing ring, is made using graphite material
When for sealing material, because processing technology limits, with a batch of graphite-seal ring, there are the differences of density, size, decrement etc.
It is different, cause with a batch of valve, sealing ring performance has corresponding difference, it is therefore desirable to which one is close for testing graphite-seal ring
The tool of sealing property, compression performance and mounting groove size, and lack such tool in the prior art.
Summary of the invention
The technical problem to be solved by the utility model is to provide one kind, and precommpression, and energy can be carried out to graphite-seal ring
Simulate true environment enough to detect the installation test of the graphite-seal ring of the metal hard-sealing ball valve of the air-tightness of graphite-seal ring
Tool.
In order to solve the above-mentioned technical problem, the utility model adopts the following technical solution: the graphite of metal hard-sealing ball valve
Sealing ring installs testing tool, including pedestal and pressing plate, and the tool uses the valve body of metal hard-sealing ball valve, valve seat and close
Seal ring seat；
The valve body at tubular, the upper end inner wall of the valve body be recessed outward and formed along the valve body circumferentially extending be in
The mounting groove of annular, the pedestal is detachably connected on the lower end of the valve body and seals the lower port of the valve body, described
Pedestal is equipped with the vent cap being connected to the inner cavity of the valve body；
The graphite-seal ring and the seal ring seat are successively supported in the mounting groove from top to bottom, and the valve seat is in
Ring-type, the graphite-seal ring are set in the outer peripheral surface of the valve seat, and the upper end outer wall of the valve seat protrudes outward and forms edge
The flange in a ring of the valve seat circumferentially extending, the flange are pressed on the upper end of the graphite-seal ring, the pressing plate pressure
It is located at the upper end of the valve seat and by the channel seal of the valve seat, and the upper surface of the outer peripheral surface of the pressing plate and the valve seat
And the upper end inner wall of the valve body surrounds the observation annular groove of the air-tightness for accommodating liquid.
Further, the tool also uses the butterfly spring of metal hard-sealing ball valve, and the butterfly spring pad is located at
The lower end of the seal ring seat.
Further, the top surface of the pedestal has first boss, and the first boss is caught in the valve body, and described
First sealing ring is installed between the outer peripheral surface of first boss and the inner wall of the valve body.
Further, the vent cap extends to the top surface of the first boss from the outer peripheral surface of the pedestal.
Further, the air inlet of the vent cap is equipped with gas source interface.
Further, the bottom surface of the pressing plate is equipped with second boss, and the second boss is caught in the valve seat, and described
Second sealing ring is installed between the outer peripheral surface of second boss and the inner peripheral surface of the valve seat.
Further, the pedestal is equipped with multiple studs, and the stud passes through the valve body and uses nut check, with
This realizes that the pedestal is detachably connected on the lower end of the valve body.
The utility model has the following beneficial effects:
The utility model utilizes the part testing of product itself, reduces other factors to graphite-seal ring leakage test
It influences, graphite-seal ring can be simulated in the true working condition of valve inner, precommpression can be carried out to graphite-seal ring, and
And the air-tightness of graphite-seal ring can be intuitively detected, and influence of the multiple parameters to sealing performance can be studied, it is close to graphite
The properties of seal ring are detected and are tested, and are made it in the case where meeting leakage rate requirement, are adjusted relevant parameter, make graphite
Sealing ring meets design requirement.
The utility model is able to solve all kinds of problems in the installation and debugging process of graphite-seal ring, simplifies debugging step,
The sealing performance and affecting parameters for testing sealing ring, greatly improve the installation and debugging efficiency of metal hard-sealing ball valve.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of an embodiment of the present invention.
Fig. 2 is the structural exploded view of an embodiment of the present invention.
Fig. 3 is enlarged drawing at A.
The label of each component in attached drawing are as follows: 1 pedestal, 11 first boss, 12 first sealing rings, 13 vent caps, 14 gas sources
Interface, 2 pressing plates, 21 second boss, 22 second sealing rings, 3 graphite-seal rings, 4 valve bodies, 5 valve seats, 6 seal ring seats, 7 butterfly bullets
Spring, 8 studs, 9 nuts, C1 mounting groove, C2 air-tightness observe annular groove, m decrement reference planes.
Specific embodiment
It is described in detail the utility model below with reference to the accompanying drawings.It should be noted that in the absence of conflict, this reality
It can be combined with each other with the feature in the embodiment and embodiment in novel.
Referring to Fig. 1 to Fig. 3.
The graphite-seal ring of the utility model metal hard-sealing ball valve installs testing tool, including pedestal 1 and pressing plate 2, institute
The tool of stating uses the valve body 4, valve seat 5 and seal ring seat 6 of metal hard-sealing ball valve；
At tubular, the upper end inner wall of the valve body 4 is recessed outward and is formed and circumferentially extended along the valve body 4 valve body 4
Mounting groove C1 in a ring, the pedestal 1 is detachably connected on the lower end of the valve body 4 and by the lower port of the valve body 4
Sealing, the pedestal 1 are equipped with the vent cap 13 being connected to the inner cavity of the valve body 4,
The graphite-seal ring 3 and the seal ring seat 6 are successively supported on from top to bottom in the mounting groove C1, the valve
Seat 5 is annular in shape, and the graphite-seal ring 3 is set on the valve seat 5, and the upper end outer wall of the valve seat 5 is protruded outward and formed
Along the flange in a ring of the valve seat 5 circumferentially extending, the flange is pressed on the upper end of the graphite-seal ring 3, the pressure
Plate 2 is pressed on the upper end of the valve seat 5 and by the channel seal of the valve seat 5, and the outer peripheral surface of the pressing plate 2 and the valve seat
The upper end inner wall of 5 upper surface and the valve body 4 surrounds the observation of the air-tightness for accommodating liquid annular groove C2.
The utility model can carry out precommpression and the air-leakage test of graphite-seal ring, and concrete operations are as follows:
According to being described above, component is assembled, i.e., removes butterfly spring on the basis of shown in Fig. 1, then will
Entirety is put on Universal spring testing machine, normal pressure (1.5 ~ 3 times of butterfly spring elastic force) is loaded on pressing plate, to graphite-seal ring
Carry out precommpression；
After the completion of precommpression, spring testing machine is enabled to keep 1 times of butterfly spring design elastic force position, via vent cap to valve
It is passed through the instrument air of 400Kpa in vivo, and injects suds in air-tightness observation annular groove, observation is had bubble-free, detected with this
The air-tightness of graphite-seal ring.
Under normal circumstances, ball valve uses the combination of multi-disc graphite-seal ring, and there are gap, ball valves between sealing ring
Disc spring provide elastic force it is limited, if be mounted directly, will lead to ball valve after a period of work, because of the work of pressure medium
With after the filling of original gap, the decrement of graphite reduces, and resilience performance is deteriorated, and ball valve is caused to leak.
And the part testing of product itself is utilized by the utility model, it reduces other factors and graphite-seal ring is sealed
The influence of test, can simulate graphite-seal ring in the true working condition of valve inner, in a pre-installation, right in true part
Graphite-seal ring carries out the precompression treatment of more times of pressure, can eliminate between graphite linings and graphite linings, sealing ring and sealing ring
Between, the gap between sealing ring and mounting groove so that the preload of lesser disk-shaped spring elasticity can be realized sealing ring squeeze it is close
Envelope guarantees sealing ring pressure resistance performance.
In addition, the utility model is also able to achieve the decrement detection and debugging of graphite-seal ring, specifically also to use to gold
Belong to the butterfly spring of hard seal ball valve, concrete operations are as follows:
Pressing plate after above-mentioned precommpression and air-leakage test is removed, is then located at the pad of butterfly spring 7 described close
The lower end of seal ring seat later similarly, will be integrally put on Universal spring testing machine, 1 is loaded on pressing plate as Fig. 1 is shown
The normal pressure of times disk-shaped spring elasticity carries out precommpression, and the upper plane of measurement pressing plate at this time is to decrement reference planes m(, that is, valve body
Upper surface) height, utilize this height, so that it may calculate the reduced overall amount of graphite-seal ring and disk spring, then with
Layout design value compares, and can show that the surplus for needing additional work is debugged, and when debugging, 1 times is loaded still on pressing plate
Normal pressure carry out precommpression, keep Universal spring testing machine height it is constant, be passed through 400Kpa's into valve body from vent cap
Instrument air, and inject suds in air-tightness observation annular groove, observation has bubble-free, detect graphite-seal ring air-tightness and
The sealing performance of entire graphite grazing ring position, and the elastic force of disk spring and the decrement of graphite-seal ring are adjusted in time, make
Graphite-seal ring reaches optimal decrement, meets leakage rate requirement.
In the prior art, the decrement for often ignoring soft graphite is not fixed this technical detail, only considers disk spring
Mechanical property, to guarantee disk-shaped spring elasticity.But individually guarantee that the performance of each part does not ensure that whole synthesis
Performance.
And the sealing performance and working condition of graphite-seal ring can be then analysed in depth by the utility model, by dish-shaped bullet
Spring, graphite-seal ring, seal ring seat and valve seat consider that the valve seat of fixing ball valve is provided using disk spring as a whole
Initial face pressure, in this process, disk spring needs to provide the pressure of compressed graphite sealing ring, while needing to provide valve seat
Initial face pressure between sphere, so this integrally possesses a fixed overall height in the operating condition, to graphite
During sealing ring carries out pressure testing, takes a disk spring design elastic force to compress this entirety, will measure indirectly
This whole decrement, and included the dimensional tolerance of each part, this total height is compared with design, obtains dish
The decrement difference of shape spring and graphite-seal ring synthesis carries out reworked processing to correlation adjustment part on this basis, can
It realizes that sealing ring is suitable with design value, guarantees under design butterfly spring elastic force, the total height satisfaction of had part is set at sealed letter
Evaluation.
Based on aforesaid operations, the utility model can also realize following functions: the utility model can be using control variable
Method, which measures multiple parameters, influences sealing performance, can by control variate method, test surfaces for example sealing ring decrement, pressure,
Ring width, sealing ring density, sealing ring tolerance, mounting groove size, mounting groove tolerance, mounting groove roughness are sealed to sealing performance
Influence, obtain optimal design parameter, can kit realize the corresponding relationships of test multiple parameters and sealing performance, and test
Structure feasibility is demonstrate,proved, it is one-stop to solve the problems, such as that metal hard-sealing ball valve debugging is difficult in industry.
The prior art realizes the performance for detecting the same specification, in this way, such as most commonly by general kit
The sealing performance of fruit graphite-seal ring is more apparent to individual difference, and exchange performance is poor, and will lead to test accuracy, there are query, institutes
With rigorous comparative test, the working condition of sealing ring need to be restored as far as possible, and there are the means of control variable.
And the utility model then utilizes the part of product itself, reduces other factors to graphite-seal ring leakage test
It influences, working condition of the graphite-seal ring inside ball valve can be restored, simulate true media environment, test graphite-seal ring is true
The multiple parameters such as the mechanical property of compressibility energy, sealing performance and disk spring under positive activity environment, also can be used control
Quantity method acquires influence of each relevant parameter to sealing performance respectively, to obtain several optimal seal parameters, Computer Aided Design
Optimization and conceptual design one-stop can solve sealing ring and debug all kinds of problems faced in assembling and setting.
It is more demanding to its because of the elastic element that disk spring is ball valve system in specific implementation, it is typically designed normal
Working condition makes its long compressive 50% or so, provides an effective elastic force, to valve seat for sealing between sphere and valve seat
Initial face pressure, while provide an elastic force compressed graphite sealing ring, make sealing ring realize sealing.
In one embodiment, the top surface of the pedestal 1 has first boss 11, and the first boss 11 is caught in the valve body
First sealing ring 12 is installed in 4, and between the outer peripheral surface of the first boss 11 and the inner wall of the valve body 4, is realized with this
Valve seat seals the lower port of valve body, and this mode, structure is simple, is easy to implement and sealing effect is reliable.
In one embodiment, the vent cap 13 extends to the first boss 11 from the outer peripheral surface of the pedestal 1
Top surface.It designs in this way, it is structurally reasonable, it is easy to implement.
In one embodiment, the air inlet of the vent cap 13 is equipped with gas source interface 14.It is convenient for using gas source interface
It is passed through gas source.
In one embodiment, the bottom surface of the pressing plate 2 is equipped with second boss 21, and the second boss 21 is caught in the valve seat
Second sealing ring 22 is installed, with this reality in 5, and between the outer peripheral surface of the second boss 21 and the inner peripheral surface of the valve seat 5
Existing pressing plate is by the channel seal of valve seat, likewise, this mode, structure is simple, is easy to implement and sealing effect is reliable.
In one embodiment, the pedestal 1 is equipped with multiple studs 8, and the stud 8 passes through the valve body 4 and uses spiral shell
Mother 9 locks, and realizes that the pedestal 1 is detachably connected on the lower end of the valve body 4 with this.This detachable connection method, structure
Simply, it is easy to implement, and firm and reliable connection.
In the prior art, to the use of graphite-seal ring, data source both from offshore company correlation experience, substantially
All it is the test under specific operation to single condition, can test multiple parameters simultaneously to the work of sealing performance influence factor
Tool, and the not data under real working condition, in addition, this tool can be realized the feasibility under real working condition to the sealing structure
It is verified.And the utility model can kit realize the corresponding relationships of test multiple parameters and sealing performance, and verify knot
Structure feasibility can test such as sealing ring decrement, pressure, sealing ring width, sealing ring density, close by control variate method
The influence of seal ring tolerance, mounting groove size, mounting groove tolerance, mounting groove roughness to graphite-seal ring performance, auxiliary parameter are set
Meter and structure design acquisition related data, experimentally verify the feasibility and correctness of structure and scheme, obtain best
Design parameter.
The precommpression of the utility model integrated seal ring, sealing performance examine, disk spring force value detection and adjustment, valve seat and
Sealed groove tolerance and roughness multiple functions such as influence in one to sealing ring sealing performance, and sealed groove position uses completely
Product parts, and the effectively pressure medium situation and components stress condition of reduction ball valve during the work time, guarantee that control becomes
Amount is unique, finds the relationship that each Parameters variation influences performance by the method for controlling variable.To guarantee each installed
Graphite-seal ring is owned by optimal service performance.Sealing ring compressibility energy, sealing performance, butterfly spring mechanical property can be tested
The multiple parameters such as energy.
It should be understood that example as described herein and embodiment are not intended to limit the utility model only for explanation, this
Field technical staff can make various modifications or variation according to it, within the spirit and principle of the utility model, made
Any modification, equivalent substitution, improvement and etc. should be included within the scope of protection of this utility model.
Claims (7)
1. a kind of graphite-seal ring of metal hard-sealing ball valve installs testing tool, it is characterised in that: including pedestal and pressing plate, institute
The tool of stating uses the valve body, valve seat and seal ring seat of metal hard-sealing ball valve；
At tubular, the upper end inner wall of the valve body is recessed outward and is formed along valve body circumferentially extending in a ring the valve body
Mounting groove, the pedestal be detachably connected on the lower end of the valve body and by the lower port of the valve body seal, the pedestal
It is equipped with the vent cap being connected to the inner cavity of the valve body；
The graphite-seal ring and the seal ring seat are successively supported in the mounting groove from top to bottom, and the valve seat is in ring
Shape, the graphite-seal ring are set in the outer peripheral surface of the valve seat, and the upper end outer wall of the valve seat is protruded outward and formed along institute
The flange in a ring of valve seat circumferentially extending is stated, the flange is pressed on the upper end of the graphite-seal ring, and the pressing plate pressure is set
The valve seat upper end and by the channel seal of the valve seat, and the upper surface of the outer peripheral surface of the pressing plate and the valve seat with
And the upper end inner wall of the valve body surrounds the observation annular groove of the air-tightness for accommodating liquid.
2. a kind of graphite-seal ring of metal hard-sealing ball valve according to claim 1 installs testing tool, feature exists
In: the tool also uses the butterfly spring of metal hard-sealing ball valve, and the butterfly spring pad is located at the seal ring seat
Lower end.
3. a kind of graphite-seal ring of metal hard-sealing ball valve according to claim 1 or 2 installs testing tool, feature
Be: the top surface of the pedestal has first boss, and the first boss is caught in the valve body, and the first boss is outer
First sealing ring is installed between circumferential surface and the inner wall of the valve body.
4. a kind of graphite-seal ring of metal hard-sealing ball valve according to claim 3 installs testing tool, feature exists
The top surface of the first boss is extended to from the outer peripheral surface of the pedestal in: the vent cap.
5. a kind of graphite-seal ring of metal hard-sealing ball valve according to claim 1 or 2 installs testing tool, feature
Be: the air inlet of the vent cap is equipped with gas source interface.
6. a kind of graphite-seal ring of metal hard-sealing ball valve according to claim 1 or 2 installs testing tool, feature
Be: the bottom surface of the pressing plate is equipped with second boss, and the second boss is caught in the valve seat, and the second boss is outer
Second sealing ring is installed between circumferential surface and the inner peripheral surface of the valve seat.
7. a kind of graphite-seal ring of metal hard-sealing ball valve according to claim 1 or 2 installs testing tool, feature
Be: the pedestal is equipped with multiple studs, and the stud passes through the valve body and uses nut check, realizes the bottom with this
Seat is detachably connected on the lower end of the valve body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821600324.9U CN209117274U (en) | 2018-09-29 | 2018-09-29 | A kind of graphite-seal ring installation testing tool of metal hard-sealing ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821600324.9U CN209117274U (en) | 2018-09-29 | 2018-09-29 | A kind of graphite-seal ring installation testing tool of metal hard-sealing ball valve |
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| CN209117274U true CN209117274U (en) | 2019-07-16 |
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| CN201821600324.9U Active CN209117274U (en) | 2018-09-29 | 2018-09-29 | A kind of graphite-seal ring installation testing tool of metal hard-sealing ball valve |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109459189A (en) * | 2018-09-29 | 2019-03-12 | 无锡斯考尔自动控制设备有限公司 | The graphite-seal ring of metal hard-sealing ball valve installs testing tool |
-
2018
- 2018-09-29 CN CN201821600324.9U patent/CN209117274U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109459189A (en) * | 2018-09-29 | 2019-03-12 | 无锡斯考尔自动控制设备有限公司 | The graphite-seal ring of metal hard-sealing ball valve installs testing tool |
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