CN205896258U - Two way seal disk seat suitable for many temperature and operating mode - Google Patents
Two way seal disk seat suitable for many temperature and operating mode Download PDFInfo
- Publication number
- CN205896258U CN205896258U CN201620875604.5U CN201620875604U CN205896258U CN 205896258 U CN205896258 U CN 205896258U CN 201620875604 U CN201620875604 U CN 201620875604U CN 205896258 U CN205896258 U CN 205896258U
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- seal
- ring
- metal
- retainer
- group
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Abstract
The utility model discloses a two way seal disk seat suitable for many temperature and operating mode, including disk seat and sealing ring retainer component, sealing ring retainer component sets up the radial outside of disk seat, sealing ring retainer component includes that pressure balance type holder, the first, graphite seal ring in the graphite seal ring group organize the second, metal sealing element holder, the first, metal sealing element holder second, metal sealing element group first and metal sealing element group second, set up graphite seal ring group first and graphite seal ring group second respectively in the both sides of pressure balance type holder, set up metal sealing element holder first and metal sealing element holder second in the outside, set up metal sealing element group first and metal sealing element group second on it respectively. The utility model discloses a two way seal disk seat suitable for many temperature and operating mode has adopted the two -way seal structure of combined type piston ring alive, realizes the two way seal of any disk seat, has good sealing performance, and can be applied to the operating temperature environment and the working condition of multiple difference.
Description
Technical field
This utility model is related to valve base sealing field and in particular to a kind of two way seal valve being applied to multi-temperature and operating mode
Seat.
Background technology
In high temperature or worst cold case, the flow resistance of valve, sealing property etc. are required especially high.Therefore, in engineering mostly
From ball valve and the flat gate valve with pod apertures.This two classes valve employs piston type floating valve seat, in spring load and medium
In the presence of pressure, can automatically compensate because temperature change cause Material shrinkage or the gap that expands it is ensured that valve seat and valve element it
Between sealing property.But the sealing between floating valve seat and valve body is the weakness of such valve, often leak in engineering, seriously
Have impact on the operation of engineering system.
Accompanying drawing 1 is the ball valve of existing market upper band floating valve seat, flat gate valve (with reference to ball valve) valve seat 600 and valve body 500
Between sealing structure.Sealing between valve seat 600 and valve body 500 adopts rubber o type circle, and the characteristic of elastomeric material determines it low
Fragility fracture can occur under warm operating mode, can be burnt under high pressure operating mode, its use temperature range can only be -70 DEG C～+200
Between DEG C, inapplicable -256 DEG C～-70 DEG C operating modes and+200 DEG C～+770 DEG C of high temperature between of low temperature.
Under the conditions of worst hot case, ball valve, flat gate valve (with reference to ball valve) between valve seat 600 and valve body 500 in the market
Sealing structure using similar accompanying drawing 2.Although the heatproof of this sealing structure can reach 600 DEG C, graphite-seal ring exists
So that graphite material is extruded from the cooperation gap of valve body 500 and valve seat 600 under high pressure conditions, thus this structure is intolerant to height
Pressure.The thermal coefficient of expansion of graphite material is larger, and heavy in section graphite-seal ring easily makes valve body 500 and valve seat at high operating temperatures
Swollen dead between 600, make floating valve seat 600 lose piston effect, so that the seal failure of valve.Meanwhile, heavy in section graphite is close
The impact of seal ring expanded by heating at high operating temperatures, is also easy to make valve operation moment of torsion increase, makes valve operation difficult.These are just
It is the main cause unstable using the valve performance of this structure.This structure does not enable single valve seat two way seal work(
Can, only when medium flows into from valve element front end, the valve seat before valve element just enables sealing function, and the valve seat after valve element can not
Realize sealing.
Utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art, provides a kind of multi-temperature and operating mode of being applied to
Two way seal valve seat, solves the problems, such as sealing leak in low temperature and worst hot case between floating valve seat and valve body for the valve.
Realizing a kind of technical scheme of above-mentioned purpose is: a kind of two way seal valve seat being applied to multi-temperature and operating mode, and it is special
Levy and be, including valve seat and sealing ring retainer assembly；
Described sealing ring retainer assembly is arranged on the radial outside of described valve seat；
Described sealing ring retainer assembly includes pressure balance type retainer, graphite grazing ring group first, graphite grazing ring group
Second, metal seal retainer first, metal seal retainer second, metal seal group first and metal seal group second；
The section of described pressure balance type retainer is in cross；Set respectively in the both sides of described pressure balance type retainer
Put described graphite grazing ring group first and graphite grazing ring group second；Outer in described graphite grazing ring group first and graphite grazing ring group second
Side arranges described metal seal retainer first and metal seal retainer second；Described metal seal group first is arranged on described
In metal seal retainer first, described metal seal group second is arranged in described metal seal retainer second.
Further, each respectively along contact surface on the contact surface with valve seat and valve body of described pressure balance type retainer
Processing one is with the wide groove with depth so that each of the endoporus of cylindrical and described valve body of described pressure balance type retainer connects
The width of contacting surface is no more than 5mm；At least opening up two in the circumferential wall of described pressure balance type retainer makes described pressure
The through hole that the external diameter of balanced type retainer connects with internal diameter.
Further, described graphite grazing ring group first includes graphite grazing internal ring first, graphite grazing outer shroud first；Described graphite
Sealing ring group second includes graphite grazing internal ring second, graphite grazing outer shroud second；Outside described graphite grazing internal ring first, described graphite grazing
The section of ring first, described graphite grazing internal ring second and described graphite grazing internal ring second is rectangular or square, and its length of side is 3-
6mm.
Further, described metal seal group first includes metal inner seal liner first, metal outside seal first；Described metal
Sealing member group second includes metal inner seal liner second, metal outside seal second；Described metal inner seal liner first, described metal external seal
Part first, described metal inner seal liner second and described metal outside seal second are c type becket or punching type becket or hollow gold
Belong to ring.
A kind of two way seal valve seat being applied to multi-temperature and operating mode of the present utility model, by employing Multi-part piston
The sealing ring retainer assembly of ring Bidirectional seal structure, realizes the two way seal of any one valve seat, has good sealing property；
Sealing ring retainer assembly employs the structure that pressure balance type retainer connects graphite-seal ring and metal sealing support simultaneously
Design, makes sealing structure cope with various temperature and working condition and is not susceptible to leak, improve the range of application of valve
And reliability.
Brief description
Fig. 1 is the signal of the sealing structure adopting rubber o type circle between the valve seat of the existing ball valve with floating valve seat and valve body
Figure；
Fig. 2 is using single, heavy in section graphite-seal ring close between the valve seat of the existing ball valve with floating valve seat and valve body
The schematic diagram of seal structure；
Fig. 3 is that a kind of assembling ball valve for the two way seal valve seat be applied to multi-temperature and operating mode of the present utility model is cutd open
Depending on schematic diagram；
Fig. 4 is that a kind of assembling ball valve for the two way seal valve seat be applied to multi-temperature and operating mode of the present utility model is real
Apply the cross-sectional schematic of details；
Fig. 5 is the partial enlarged drawing in a portion in Fig. 4；
Fig. 6 is that a kind of assembling gate valve for the two way seal valve seat be applied to multi-temperature and operating mode of the present utility model is real
Apply the cross-sectional schematic of details；
Fig. 7 is a kind of another kind ball valve for the two way seal valve seat be applied to multi-temperature and operating mode of the present utility model
The cross-sectional schematic of embodiment；
Fig. 8 is a kind of another kind gate valve for the two way seal valve seat be applied to multi-temperature and operating mode of the present utility model
The cross-sectional schematic of embodiment；
Fig. 9 is that a kind of pressure balance type of two way seal valve seat being applied to multi-temperature and operating mode of the present utility model keeps
The structural representation sectional view of frame.
Specific embodiment
In order to be able to preferably understand to the technical solution of the utility model, below by specifically embodiment and combine
Accompanying drawing is described in detail:
Refer to Fig. 3 to Fig. 6, a kind of two way seal valve seat being applied to multi-temperature and operating mode of the present utility model, including
Valve seat 600 and sealing ring retainer assembly 100.
Sealing ring retainer assembly 100 is arranged on the radial outside of valve body 600.
Sealing ring retainer assembly 100 includes pressure balance type retainer 110, graphite grazing ring group first 120, graphite grazing
Ring group second 130, metal seal retainer first 140, metal seal retainer second 150, metal seal group first 160 and metal
Sealing member group second 170.
The section of pressure balance type retainer 110 is in cross.
It is respectively provided with graphite grazing ring group first 120 and graphite grazing ring group second in the both sides of pressure balance type retainer 110
130.
Graphite grazing ring group first 120 includes graphite grazing internal ring first 121, graphite grazing outer shroud first 122；Graphite grazing ring group
Second 130 includes graphite grazing internal ring second 131, graphite grazing outer shroud second 132；Graphite grazing internal ring first 121, graphite grazing outer shroud first
122nd, the section of graphite grazing internal ring second 123 and graphite grazing internal ring second 124 is rectangular or square, and its length of side is 3-6mm.
Graphite grazing ring group first 120 and graphite grazing ring group second 130 can adopt soft graphite, or flexible graphite belt interior metal lining, or
Using woven graphite, or woven graphite band interior metal lining etc. compressing.
In the outside of graphite grazing ring group first 120 and graphite grazing ring group second 130, metal seal retainer first 140 is set
With metal seal retainer second 150.The size essence of metal seal retainer first 140 and metal seal retainer second 150
Degree, surface roughness should be strict with；Fit clearance should be selected by the thermal coefficient of expansion of material therefor at maximum outside diameter, in case
Only high temperature locking；Take appropriate measures reduction this cylindrical and valve interior wall contact area again, maximum cylindrical and valve body inner bore
Contact width often locate controllable below 5mm.Such as grooving, it is designed to shoulder etc..
Metal seal group first 160 is arranged in metal seal retainer first 140, and metal seal group second 170 is arranged
In metal seal retainer second 150.Metal seal group first 160 includes metal inner seal liner first 161, metal outside seal
First 162；Metal seal group second 170 includes metal inner seal liner second 171, metal outside seal second 172；Metal inner seal liner first
161st, metal outside seal first 162, metal inner seal liner second 171 and metal outside seal second 172 can select according to working condition
Its material, coating, form etc., can adopt c type becket, or pressurized type becket, or hollow metal ring, on the surface of becket
Also coating or the PROCESS FOR TREATMENT of coating can be carried out, the suggestion of its material selects rustless steel, or inconel material.Metallic packing ring
Surface can need using cladding according to operating mode or apply fluoroplastics, graphitization, nickel plating, the PROCESS FOR TREATMENT such as silver-plated, gold-plated, some operating modes
Also can directly carry out surface polishing, not carry out coating or coating is processed.
Refer to Fig. 7, a kind of another kind of the two way seal valve seat being applied to multi-temperature and operating mode of the present utility model exists
Embodiment in ball valve, its metal seal is single hollow metal ring.How warm Fig. 8 is applied to for one kind of the present utility model
Application in gate valve for this kind of embodiment of the two way seal valve seat of degree and operating mode.
Refer to Fig. 7, each respectively along contact surface on the contact surface with valve seat and valve body of pressure balance type retainer 110
Processing one is with the wide groove 111 with depth so that each of the endoporus of the cylindrical and valve body of pressure balance type retainer 110 contacts
The width in face is no more than 5mm.At least opening up two in the circumferential wall of pressure balance type retainer 110 makes pressure balance type protect
Hold the through hole 112 that the external diameter of frame 110 and internal diameter connect.
A kind of two way seal valve seat being applied to multi-temperature and operating mode of the present utility model is compared with existing seal valve seat
Have the characteristics that.
1. can realize reliably sealing under the conditions of high temperature and worst cold case.
Prior art is capable of the valve base sealing structure of two way seal, is only limitted to temperature range at -70 DEG C～+200 DEG C
Between working condition under use, inapplicable -256 DEG C～-70 DEG C operating modes and+200 DEG C～+770 DEG C of high temperature between of low temperature.This
Utility model is applicable to any temperature operating mode between -256 DEG C～770 DEG C, applied widely.
2. can realize reliably sealing under high pressure and low pressure working condition.
Prior art adopts rubber o type circle to seal between the ball valve of floating valve seat or the valve seat of flat gate valve and valve body,
Not only it is restricted using temperature range, and also limited because of the size using medium and valve inside nominal diameter using pressure
System, because rubber o type circle is possible to be extruded or blown by high pressure.As being applied in gas operating mode, when the inside nominal diameter of valve is big
When dn150, maximum pressure should be less than 600lb, is otherwise necessary for explosion precaution to be taken.Prior art adopt valve seat with
Although between valve body, graphite-seal ring sealing heatproof can reach 600 DEG C, not high pressure resistant, particularly when temperature or pressure reduction become
When changing larger, graphite-seal ring is easily breakdown, and leads to valve base sealing system leak.Heavy in section graphite-seal ring is in high temperature
Easily make valve body and valve base chamber swollen dead under state, make floating valve seat lose piston effect, so that the seal failure of valve.Substantially
Long-pending graphite-seal ring expanded by heating at high operating temperatures, is also easy to make valve operation moment of torsion increase, makes valve operation difficult.
This utility model adopts stagewise small bore graphite-seal ring, pressure balance type retainer, metal seal to keep
Frame and the combination of metal seal group constitute floating valve seat ball valve or valve body of flat gate valve and the sealing of valve base chamber, using temperature range
Width, big using pressure limit, it is suitable for almost the operating mode of various media.In high temperature, high pressure operating mode, graphite-seal ring both will not
There is high temperature locking phenomenon, high-voltage breakdown phenomenon also will not occur.Stagewise small bore graphite-seal ring, can under worst hot case
Prevent graphite-seal ring from excessively expanding, the motility of impact valve seat piston movement, under worst cold case, graphite-seal ring can be prevented
Excess shrinkage, and cause sealing leak.Pressure balance type retainer is in either direction graphite-seal ring if any micro seepage, pressure
The pressure balance of graphite-seal ring both sides can be made after entering pressure balance type retainer, play this sealing ring of prevention and occur further
The effect of seepage.Metal seal group, can prevent the piston movement of valve seat from causing graphite close in High Pressure Difference, high temperature difference change
The generation of seal ring erosion, extrusion and wear problem.
3. applied widely, adaptability for working condition is strong.
This utility model can be applicable in ball valve or the valve base sealing system of flat gate valve, as detachable valve seat and valve body
Between sealing structure, all achievable in the case of making ball valve or flat gate valve in only one of which valve seat or having two valve seats simultaneously
To double containment.When installing space is restricted, valve adopts single valve seat structure design, can reduce the overall dimensions of valve, have
Beneficial to in-site installation, still can achieve two way seal simultaneously, install and do not flow to restriction.When for as poison, radiating medium, height
During the very harsh operating mode such as warm steam, using double-valve-seat structure design, two independent valve seats can be realized two way seal, make
The sealing of valve is more reliable, substantially increases safety, the reliability of system.
Based on above feature, a kind of two way seal valve seat being applied to multi-temperature and operating mode of the present utility model is compared existing
Prominent substantive distinguishing features and notable are had using rubber o type circle and single, heavy in section graphite-seal ring sealing structure
Progress.
Those of ordinary skill in the art is it should be appreciated that above embodiment is intended merely to illustrate that this practicality is new
Type, and be not used as being to restriction of the present utility model, as long as in spirit of the present utility model, to the above
The change of embodiment, modification all will fall in Claims scope of the present utility model.
Claims (4)
1. a kind of two way seal valve seat being applied to multi-temperature and operating mode is it is characterised in that include valve seat and sealing ring retainer
Assembly；
Described sealing ring retainer assembly is arranged on the radial outside of described valve seat；
Described sealing ring retainer assembly includes pressure balance type retainer, graphite grazing ring group first, graphite grazing ring group second, gold
Belong to sealing member retainer first, metal seal retainer second, metal seal group first and metal seal group second；
The section of described pressure balance type retainer is in cross；It is respectively provided with institute in the both sides of described pressure balance type retainer
State graphite grazing ring group first and graphite grazing ring group second；Set in the outside of described graphite grazing ring group first and graphite grazing ring group second
Put described metal seal retainer first and metal seal retainer second；Described metal seal group first is arranged on described metal
In sealing member retainer first, described metal seal group second is arranged in described metal seal retainer second.
2. a kind of two way seal valve seat being applied to multi-temperature and operating mode according to claim 1 is it is characterised in that described
On the contact surface with valve seat and valve body of pressure balance type retainer, respectively along contact surface, respectively processing one is recessed with wide same depth
Groove so that each contact surface of endoporus of cylindrical and described valve body of described pressure balance type retainer width no more than
5mm；Two external diameters making described pressure balance type retainer are at least opened up on the circumferential wall of described pressure balance type retainer
The through hole connecting with internal diameter.
3. a kind of two way seal valve seat being applied to multi-temperature and operating mode according to claim 1 it is characterised in that
Described graphite grazing ring group first includes graphite grazing internal ring first, graphite grazing outer shroud first；
Described graphite grazing ring group second includes graphite grazing internal ring second, graphite grazing outer shroud second；
In described graphite grazing internal ring first, described graphite grazing outer shroud first, described graphite grazing internal ring second and described graphite grazing
The section of ring second is rectangular or square, and its length of side is 3-6mm.
4. a kind of two way seal valve seat being applied to multi-temperature and operating mode according to claim 1 it is characterised in that
Described metal seal group first includes metal inner seal liner first, metal outside seal first；
Described metal seal group second includes metal inner seal liner second, metal outside seal second；
Described metal inner seal liner first, described metal outside seal first, described metal inner seal liner second and described metal external seal
Part second is c type becket or punching type becket or hollow metal ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620875604.5U CN205896258U (en) | 2016-08-12 | 2016-08-12 | Two way seal disk seat suitable for many temperature and operating mode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620875604.5U CN205896258U (en) | 2016-08-12 | 2016-08-12 | Two way seal disk seat suitable for many temperature and operating mode |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205896258U true CN205896258U (en) | 2017-01-18 |
Family
ID=57781068
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620875604.5U Withdrawn - After Issue CN205896258U (en) | 2016-08-12 | 2016-08-12 | Two way seal disk seat suitable for many temperature and operating mode |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205896258U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106151578A (en) * | 2016-08-12 | 2016-11-23 | 上海阀门厂股份有限公司 | A kind of two way seal valve seat being applicable to multi-temperature and operating mode |
-
2016
- 2016-08-12 CN CN201620875604.5U patent/CN205896258U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106151578A (en) * | 2016-08-12 | 2016-11-23 | 上海阀门厂股份有限公司 | A kind of two way seal valve seat being applicable to multi-temperature and operating mode |
| CN106151578B (en) * | 2016-08-12 | 2018-10-09 | 上海阀门厂股份有限公司 | A kind of two way seal valve seat suitable for multi-temperature operating mode |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20170118 Effective date of abandoning: 20181009 |
|
| AV01 | Patent right actively abandoned |