CN108916416A - A kind of compensation sealing valve seat - Google Patents
A kind of compensation sealing valve seat Download PDFInfo
- Publication number
- CN108916416A CN108916416A CN201811119626.9A CN201811119626A CN108916416A CN 108916416 A CN108916416 A CN 108916416A CN 201811119626 A CN201811119626 A CN 201811119626A CN 108916416 A CN108916416 A CN 108916416A
- Authority
- CN
- China
- Prior art keywords
- sealing
- ring
- inner ring
- spool
- valve seat
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000007789 sealing Methods 0.000 title claims abstract description 95
- 239000000463 material Substances 0.000 claims description 5
- 238000012856 packing Methods 0.000 claims description 5
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 5
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 5
- 239000013013 elastic material Substances 0.000 claims description 2
- 238000005299 abrasion Methods 0.000 abstract description 12
- 238000009434 installation Methods 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract 1
- 229910052799 carbon Inorganic materials 0.000 abstract 1
- 210000004907 gland Anatomy 0.000 abstract 1
- 238000005260 corrosion Methods 0.000 description 6
- 230000007797 corrosion Effects 0.000 description 6
- 239000012530 fluid Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 3
- 229920001131 Pulp (paper) Polymers 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/06—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor
- F16K5/061—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor knee-joint
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/06—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor
- F16K5/0663—Packings
- F16K5/0668—Single packings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/08—Details
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/08—Details
- F16K5/14—Special arrangements for separating the sealing faces or for pressing them together
- F16K5/20—Special arrangements for separating the sealing faces or for pressing them together for plugs with spherical surfaces
Abstract
The invention discloses a kind of compensation sealing valve seat, valve seat includes inner ring and outer rings, and the inner ring has shoulder close to one end of valve body, and the outer ring is set in the inner ring, is provided with counterbalance spring between the inner ring and the shoulder；The outer ring and the inner ring all have the shape to fit in one end close to spool with the sealing surface of the spool, and the fitting of the outer ring and the spool constitutes the first sealing pair, and the fitting of the inner ring and the spool constitutes the second sealing pair；In one end close to the spool, circumferentially distributed accommodating chamber is set between the outer ring and the inner ring, sealing ring, the third sealing pair that the sealing ring and the spool are constituted are arranged in the accommodating chamber.By setting counterbalance spring and combined labyrinth and carbon gland pair, valve seat has compensation production, the ability of installation error, the ability of automatic compensation abrasion loss；Combination sealing pair can be applicable in the working environment of high-low pressure, good seal performance.
Description
Technical field：
The present invention relates to valve gate technologies, and in particular to a kind of compensation sealing valve seat.
Background technique：
Eccentric valve is suitable for the requirement of all kinds of generic industries, such as water, sewage, paper pulp medium.But it uses for a long time, it can be by
Lead to the generation of leakage in the abrasion of sealing pair.
Summary of the invention：
Sealing pair abrasion for eccentric valve causes to reveal, and it is close to provide a kind of compensation that eccentric valve leakage can be effectively reduced
Seal valve seat.
The technical solution is that a kind of compensation sealing valve seat, valve seat includes inner ring and outer rings, and the inner ring is close to valve body
One end has shoulder, and the outer ring is set in the inner ring, is provided with counterbalance spring between the inner ring and the shoulder；Institute
Stating outer ring and the inner ring all has the shape to fit, the outer ring with the sealing surface of the spool in one end close to spool
Fitting with the spool constitutes the first sealing pair, and the fitting of the inner ring and the spool constitutes the second sealing pair；Close
Circumferentially distributed accommodating chamber is arranged in one end of the spool between the outer ring and the inner ring, the cloth in the accommodating chamber
Set sealing ring, the third sealing pair that the sealing ring and the spool are constituted.
Its technical principle is, since conventional valve seat and spool are single sealing secondary sealing, in use, unavoidably
Presence cause to reveal due to the abrasion of valve.The valve seat of this programme can constitute three sealing pairs with spool, by set about
Duan Shixian：It sets valve seat to include outer ring and inner ring, the inner ring has shoulder close to one end of valve body, and the outer ring is arranged
In the inner ring；In one end close to spool, outer ring and inner ring are respectively bonded with the sealing surface of spool, and it is close to be respectively formed first
Envelope is secondary and the second sealing pair, and in the ideal situation, the first friction is secondary and the second friction is secondary all comes into force, but actual capabilities can be because
Cause to contact with one of them for assembly problem or precision problem, but due to the presence of counterbalance spring, outer ring has certain
Decrement, therefore the first sealing pair that outer ring and valve seat are formed is Elastic Contact, can compensate the installation error and system of part
Make error.After outer ring abrasion abrasion loss can be compensated by counterbalance spring automatically, extend the service life of valve.Two sealing pairs are deposited
It can abrasion loss also improving.In addition sealing ring, sealing ring are also being provided between the first sealing pair and the second sealing pair
Third sealing pair is constituted with spool, further improves sealing performance.
Further, it is connected through a screw thread between the inner ring and valve body.
Further, the counterbalance spring is disk spring.Disk spring in lesser space layout and can be born
Biggish load, deformation can be larger, therefore is adapted to compensate for the abrasion of valve seat.
Further, the inner ring and the outer ring are rigid material, first sealing pair and second sealing pair
For rigid seal.It is all rigid seal that the first sealing pair and the second sealing pair, which is arranged, therefore biggish impact can be absorbed, can be with
Suitable for the higher medium of flowing pressure.
Further, the sealing ring is elastic material, and the third sealing pair is elastic packing.Third sealing pair is set
It is not easy to wear for elastic packing, and it is suitable for low voltage situations.
Further, the material of the sealing ring is PTFE.PTFE seal circle has corrosion-resistant, resistant to high temperatures and media-resistant etc.
Superperformance.
Further, to there also is provided second between the outer ring and the valve body, between the outer ring and the inner ring close
Seal.The second sealing ring being arranged between valve body and outer ring can prevent medium from sending out by the gap between outer ring and valve body
Raw leakage, and the second sealing ring being arranged between outer ring and inner ring can prevent medium from sending out by the gap of outer ring and inner ring
Raw leakage, and the fluid entered in disk spring may make disk spring that corrosion failure occur.
Further, gasket is set between the end face of the shoulder and the valve body.Setting is in shoulder end face and described
Gasket between valve body can prevent fluid from entering between shoulder and valve body, lead to disk spring corrosion failure.
The advantageous effect of the invention is：
1, setting valve seat is arranged by inner ring and outer rings, forms 2 sealing pairs, and improve valve seat can abrasion loss；
Counterbalance spring can compensate the manufacturing and fixing error of valve seat, and counterbalance spring also makes the first sealing pair have automatic compensation abrasion
Ability；
2, the third sealing pair between the first sealing pair and the second sealing pair is wear-resistant as elastic packing, is applicable in
In low-pressure fluid.Under conditions of the first, second sealing pair is rigid seal, three sealing pairs of combination are applicable in the work of high-low pressure
Make environment, and further improves leakage prevention capability.
Detailed description of the invention：
Fig. 1 is the schematic diagram of compensation sealing valve seat and valve；
Fig. 2 is the partial enlarged view of Fig. 1；
It is marked in figure：1- spool, 2- valve body, 3- inner ring, 4- counterbalance spring, 5- outer ring, 6- sealing ring, 7- second are sealed
Circle, 8- accommodating chamber, 31- shoulder.
Specific embodiment：
Embodiment one：
As shown in Fig. 1~2, compensation sealing valve seat includes inner ring 3 and outer ring 5, and inner ring 3 has in one end close to valve body 2
Shoulder 31, the circumferential direction and valve body 2 of shoulder 31 are connected through a screw thread.Outer ring 5 is set in the inner ring 3, the inside of outer ring 5 with it is interior
The one side that ring 3 contacts has circumferential slot, is provided with counterbalance spring 4 in the slot of circumferential direction, the both ends of counterbalance spring 4 respectively with
Outer ring 5, inner ring 3 contact, and in the present embodiment, which is disk spring；Outer ring 5 and inner ring 3 are close to the one of spool 1
End all has the shape to fit with the sealing surface of the spool 1, and the fitting of outer ring 5 and the spool 1 constitutes the first sealing pair,
The fitting of inner ring 3 and the spool 1 constitutes the second sealing pair.In the present embodiment, the first sealing pair and the second sealing pair are all
Rigid seal, i.e. spool and valve seat are all rigid material, such as spool uses 304,316 stainless steels, and valve seat uses metal material
It is made, build-up wear-resistant alloy material can be carried out on sealing surface to improve the effect of its wear-resisting anti-leak, pottery also can be used
Ceramic material.It is larger that first sealing pair and the second sealing pair as rigid seal can be adapted for pressure, fluid impingement force it is strong and
Fluid contains the operating condition of impurity.It is not that pure rigidity connects since the first sealing pair is provided with adaptability to changes by counterbalance spring 4
Touching, abrasion is smaller than pure rigid contact, and also has automatic compensation ability upon wear, while counterbalance spring can also compensate for
The accuracy of manufacture and installation error of valve, therefore the good seal performance of the compensation sealing valve seat.
It is also provided with third sealing pair in the present embodiment, third sealing pair is elastic seal pair, between the first sealing pair
And second between sealing pair, is realized by the fitting between elastic seal ring 6 and spool 1.Outer ring 5 and inner ring 3 are close to valve
One end of core 1, joint place form a circumferential accommodating chamber 8, sealing ring 6 are mounted in accommodating chamber 8, sealing ring 8 and spool 1
Interference contact, which forms to squeeze, forms third sealing pair, reaches sealing effect.Third sealing pair is complete elastic packing, abrasion loss
It is small, it can be adapted for the lesser operating condition of compression shock.Preferably, sealing ring 6 is PTFE seal circle, and PTFE seal circle has corrosion resistant
The superperformances such as erosion, resistant to high temperatures and media-resistant.
Medium is let out by the gap between gap, outer ring 5 and the inner ring 3 between outer ring 5 and valve body 2 in order to prevent
Leakage, between outer ring 5 and valve body 2, outer ring 5 and inner ring 3 be additionally provided with the second sealing ring 7.Second sealing ring 7 can prevent medium
It enters in disk spring so that corrosion failure occurs for disk spring.
Embodiment two：
Likewise, also setting up gasket between the end face of shoulder 31 and the valve body 2, prevent fluid from entering 31 He of shoulder
Entering counterbalance spring 4 and leading to 4 corrosion failure of counterbalance spring between valve body 2.
Above-described specific embodiment has carried out further the purpose of the present invention, technical scheme and beneficial effects
It is described in detail, it should be understood that being not intended to limit the present invention the foregoing is merely a specific embodiment of the invention
Protection scope, all within the spirits and principles of the present invention, any modification, equivalent substitution, improvement and etc. done should all include
Within protection scope of the present invention.
Claims (8)
1. a kind of compensation sealing valve seat, which is characterized in that its valve seat includes inner ring (3) and outer ring (5), and the inner ring (3) is close
One end of valve body (2) has shoulder (31), and the outer ring (5) is set on the inner ring (3), the inner ring (3) and described
Counterbalance spring (4) are provided between shoulder (31)；The outer ring (5) and the inner ring (3) one end close to spool (1) all and institute
The sealing surface for stating spool (1) has the shape to fit, and the fitting of the outer ring (5) and the spool (1) constitutes the first sealing
The fitting of pair, the inner ring (3) and the spool (1) constitutes the second sealing pair；It is described in one end close to the spool (1)
Circumferentially distributed accommodating chamber (8) are set between outer ring (5) and the inner ring (3), sealing ring is arranged in the accommodating chamber (8)
(6), the third sealing pair that the sealing ring (6) and the spool (1) are constituted.
2. a kind of compensation sealing valve seat according to claim 1, which is characterized in that the inner ring (3) and valve body (2) screw thread connect
It connects.
3. a kind of compensation sealing valve seat according to claim 1, which is characterized in that the counterbalance spring (4) is disk spring.
4. a kind of compensation sealing valve seat according to claim 1, which is characterized in that the inner ring (3) and the outer ring (5) are rigid
Property material, first sealing pair and second sealing pair are rigid seal.
5. a kind of compensation sealing valve seat according to claim 1, which is characterized in that the sealing ring (6) is elastic material, described
Third sealing pair is elastic packing.
6. a kind of compensation sealing valve seat according to claim 1, which is characterized in that the material of the sealing ring (6) is PTFE.
7. a kind of compensation sealing valve seat according to claim 1, which is characterized in that the outer ring (3) and the valve body (2) it
Between, between the outer ring (3) and the inner ring (2) there also is provided the second sealing ring (7).
8. a kind of compensation sealing valve seat according to claim 1, which is characterized in that the end face of the shoulder (31) and the valve body
(2) gasket is set between.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811119626.9A CN108916416A (en) | 2018-09-25 | 2018-09-25 | A kind of compensation sealing valve seat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811119626.9A CN108916416A (en) | 2018-09-25 | 2018-09-25 | A kind of compensation sealing valve seat |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108916416A true CN108916416A (en) | 2018-11-30 |
Family
ID=64409059
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811119626.9A Pending CN108916416A (en) | 2018-09-25 | 2018-09-25 | A kind of compensation sealing valve seat |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108916416A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4566671A (en) * | 1983-11-14 | 1986-01-28 | John Beson | Gate valve having a secondary seal |
| US4911408A (en) * | 1989-01-03 | 1990-03-27 | Kemp Development Corporation | Seat assembly for ball valves |
| CN101240858A (en) * | 2008-02-26 | 2008-08-13 | 张秀琴 | Ball valve |
| CN201554893U (en) * | 2009-11-27 | 2010-08-18 | 重庆白市驿锻制阀门研究所 | Four valve seat sealing ball valve |
| CN104565421A (en) * | 2013-10-29 | 2015-04-29 | 上海上冶阀门制造有限公司 | Double-power two-way composite sealing type low-temperature ball valve |
| CN206694576U (en) * | 2017-04-18 | 2017-12-01 | 上海高中压阀门股份有限公司 | A kind of ball seat of structure safety |
-
2018
- 2018-09-25 CN CN201811119626.9A patent/CN108916416A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4566671A (en) * | 1983-11-14 | 1986-01-28 | John Beson | Gate valve having a secondary seal |
| US4911408A (en) * | 1989-01-03 | 1990-03-27 | Kemp Development Corporation | Seat assembly for ball valves |
| CN101240858A (en) * | 2008-02-26 | 2008-08-13 | 张秀琴 | Ball valve |
| CN201554893U (en) * | 2009-11-27 | 2010-08-18 | 重庆白市驿锻制阀门研究所 | Four valve seat sealing ball valve |
| CN104565421A (en) * | 2013-10-29 | 2015-04-29 | 上海上冶阀门制造有限公司 | Double-power two-way composite sealing type low-temperature ball valve |
| CN206694576U (en) * | 2017-04-18 | 2017-12-01 | 上海高中压阀门股份有限公司 | A kind of ball seat of structure safety |
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