CN209146375U - A kind of coal changes gas ball-valve dedicated - Google Patents
A kind of coal changes gas ball-valve dedicated Download PDFInfo
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- CN209146375U CN209146375U CN201821630985.6U CN201821630985U CN209146375U CN 209146375 U CN209146375 U CN 209146375U CN 201821630985 U CN201821630985 U CN 201821630985U CN 209146375 U CN209146375 U CN 209146375U
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Abstract
The utility model discloses a kind of coals to change gas ball-valve dedicated, including valve body, valve deck is respectively provided in valve body two sides, sphere is equipped in valve body, wherein valve rod passes through valve body and is connected with sphere, and the valve deck and sphere mating surface are provided with the annular seal groove for installing sealing ring, the sealing ring is made of fluorubber material, fluorubber highest interval can be used at 300 degrees Celsius of high temperature, can be used for a long time at 220 degrees Celsius or less, more effectively widened the use temperature of soft sealing ball valve；The end face that the sealing ring is matched with sphere under the premise of the pretightning force of very little, can reach the necessary seal pressure between sealing ring and sphere, to ensure the sealing performance of valve so that forming linear sealing between sealing ring and sphere for arc surface；It is provided with an inclined-plane on the end face that the sealing ring is in contact with the bottom wall of annular seal groove, can preferably increase the elasticity and bearing capacity of sealing ring in this way.
Description
Technical field
The utility model relates to ball valve fields, more specifically, it relates to which a kind of coal changes gas ball-valve dedicated.
Background technique
It is well known that on September 10th, 2013, State Council issues " prevention and control of air pollution action scheme " (" ten, atmosphere "),
It clearly proposes that national air quality totally improves in 5 years, heavily contaminated weather is greatly decreased；Jing-jin-ji region, the Yangtze River Delta, Pearl River Delta etc.
Region fine particle concentration declines 25%, 20%, 15% or so respectively.2017, " blue sky guarantor was won in government work report proposition
Defend war ", quickening solves the problems, such as pollution that caused by coal burning.Clean energy resource of the natural gas as relative efficiency, by the favor of government and market,
" coal changes gas " is promoted on a large scale as one of the important measures for improving air quality." coal changes gas ball-valve dedicated " is one
Kind is used for the auxiliary device of natural gas transmission, is widely used in " coal changes gas " field.
The sealing ring of existing natural gas floating ball valve is the materials such as polytetrafluoroethylene (PTFE), reinforced TFE, PPL,
The advantages of these sealing ring materials are with the presence of it, but their leakproofness and resilience are not very well, when valve uses one section
Between after, a possibility that leaking, is very big, and especially the valve that uses of natural gas line will be very big once leaking
Security risk.
Utility model content
In view of the deficienciess of the prior art, the purpose of this utility model is to provide a kind of coals to change gas ball-valve dedicated.
To achieve the above object, the utility model provides following technical solution:
A kind of coal changes gas ball-valve dedicated, including valve body, is respectively provided with valve deck in valve body two sides, and sphere is equipped in valve body,
Middle valve rod passes through valve body and is connected with sphere, and the valve deck and sphere mating surface are provided with the ring packing for installing sealing ring
Slot, the sealing ring are made of fluorubber material；
The end face that the sealing ring is matched with sphere is arc surface, so that forming linear sealing between sealing ring and sphere；
An inclined-plane is provided on the end face that the sealing ring is in contact with the bottom wall of annular seal groove.
The utility model is further arranged: the lateral wall of the sealing ring is provided with several air channels, several ventilations
Slot is spaced apart on the lateral wall.
The utility model is further arranged: the height of the lateral wall of the annular seal groove is greater than the height of inner sidewall.
The utility model is further arranged: the material of sealing ring is VITON or FPM or FKM.
The utility model is the utility model has the advantages that sealing ring is changed by the sealing ring of the plastic types such as traditional PTFE, RPTFE, PPL
At the fluororubbers sealing ring such as VITON, FPM, FKM, fluorubber highest interval can be used at 300 degrees Celsius of high temperature, can be with
It is used for a long time at 220 degrees Celsius or less, has more effectively widened the use temperature of soft sealing ball valve；
The end face that the sealing ring is matched with sphere is arc surface, so that forming linear sealing between sealing ring and sphere；
Under the premise of the pretightning force of very little, the necessary seal pressure between sealing ring and sphere can be reached, to ensure the close of valve
Sealing property.
An inclined-plane is provided on the end face that the sealing ring is in contact with the bottom wall of annular seal groove, it in this way can be more preferable
Increase sealing ring elasticity and bearing capacity, when sphere is by larger medium thrust, sphere can to outlet end movement, sealing
Circle meeting flexible deformation compresses valve deck, and at this moment the air in the enclosure space between sealing ring and the annular seal groove of valve deck can be pressed
Contracting, can generate certain pressure, when the pressure medium that sphere is subject to reduces or in the absence of pressure medium, sealing ring and valve
Sealing ring is back into initial position by the compressed air in enclosure space between lid outward, along with the bullet of sealing ring itself
Property, allow sphere to return to initial position, this just makes valve under the rather unstable state of pressure medium, also can guarantee good sealing
Performance.
Detailed description of the invention
Fig. 1 is the structural schematic diagram that a kind of coal of the utility model changes gas ball-valve dedicated；
Fig. 2 is the cross-sectional view that a kind of coal of the utility model changes gas ball-valve dedicated；
Fig. 3 is the structural schematic diagram of valve deck；
Fig. 4 is the structural schematic diagram one of sealing ring；
Fig. 5 is the structural schematic diagram two of sealing ring.
Description of symbols: 1, valve body；2, valve deck；21, annular seal groove；211, bottom wall；212, lateral wall；213, inside
Wall；3, sphere；4, sealing ring；41, arc surface；42, air channel；43, inclined-plane.
Specific embodiment
Change gas ball-valve dedicated embodiment to a kind of coal of the utility model referring to attached drawing 1 to Fig. 5 to be described in further details.
A kind of coal changes gas ball-valve dedicated, including valve body 1, is respectively provided with valve deck 2 in 1 two sides of valve body, and sphere is equipped in valve body 1
3, wherein valve rod passes through valve body 1 and is connected with sphere 3, and the valve deck 2 is provided with 3 mating surface of sphere for installing sealing ring 4
Annular seal groove 21, the end face that the sealing ring 4 is matched with sphere 3 be arc surface 41 so that between sealing ring 4 and sphere
Form linear sealing；Under the premise of the pretightning force of very little, the necessary seal pressure between sealing ring 4 and sphere can be reached, thus
Ensure the sealing performance of valve.
The lateral wall of the sealing ring 4 is provided with several air channels 42, several air channels 42 are spaced apart the outside
On wall, additional air when assembly between the bottom surface of sealing ring 4 and the annular seal groove 21 of valve deck 2 can be completely exhausted out, sealing ring 4
It can uniformly be contacted between annular seal groove 21, while also ensure that sealing ring 4 and sphere form that border of sealing
Contact be all it is very uniform, this just more ensure that the sealing performance of valve.
An inclined-plane 43 is provided on the end face that the sealing ring 4 is in contact with the bottom wall 211 of annular seal groove 21, in this way
The elasticity and bearing capacity that sealing ring 4 can preferably be increased, when sphere 3 is by larger medium thrust, sphere can be to outlet
End movement, the meeting flexible deformation of sealing ring 4 compress valve deck 2, the at this moment closing between sealing ring 4 and the annular seal groove 21 of valve deck 2
Air in space can be compressed, and certain pressure can be generated, when pressure medium that sphere is subject to reduces or pressure medium not
In the presence of, sealing ring 4 is back into initial position by the compressed air in enclosure space between sealing ring 4 and valve deck 2 outward, then
In addition the elasticity of sealing ring 4 itself, allows sphere to return to initial position, this just makes valve in the rather unstable state of pressure medium
Under, it also can guarantee good sealing performance.
The height of the lateral wall 212 of the annular seal groove 21 is greater than the height of inner sidewall 213, so that sealing ring 4 is installed
It is more firm, avoid 4 use process of sealing ring from being subjected to displacement.
The sealing ring 4 is made of fluorubber material；By sealing ring 4 by Plastics such as traditional PTFE, RPTFE, PPL
The sealing ring 4 of type changes the fluororubbers such as VITON, FPM, FKM sealing ring 4 into, and fluorubber highest can be at 300 degrees Celsius of high temperature
Interval uses, and can be used for a long time at 220 degrees Celsius or less, more effectively widen the use temperature of soft sealing ball valve.
Following table is the test data about fluorubber；
The above is only the preferred embodiment of the utility model, and the protection scope of the utility model is not limited merely to
Above-described embodiment, technical solution belonging to the idea of the present invention belong to the protection scope of the utility model.It should refer to
Out, for those skilled in the art, it is without departing from the principle of the utility model it is several improvement and
Retouching, these improvements and modifications also should be regarded as the protection scope of the utility model.
Claims (4)
1. a kind of coal changes gas ball-valve dedicated, including valve body, it is respectively provided with valve deck in valve body two sides, sphere is equipped in valve body, wherein
Valve rod passes through valve body and is connected with sphere, it is characterized in that: the valve deck and sphere mating surface are provided with for installing sealing ring
Annular seal groove, the sealing ring are made of fluorubber material；
The end face that the sealing ring is matched with sphere is arc surface, so that forming linear sealing between sealing ring and sphere；It is described
An inclined-plane is provided on the end face that sealing ring is in contact with the bottom wall of annular seal groove.
2. a kind of coal according to claim 1 changes gas ball-valve dedicated, it is characterized in that: the lateral wall of the sealing ring is provided with
Several air channels, several air channels are spaced apart on the lateral wall.
3. a kind of coal according to claim 1 changes gas ball-valve dedicated, it is characterized in that: the lateral wall of the annular seal groove
Height is greater than the height of inner sidewall.
4. a kind of coal according to claim 1 or 2 or 3 changes gas ball-valve dedicated, it is characterized in that: the material of sealing ring is
VITON or FPM or FKM.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821630985.6U CN209146375U (en) | 2018-10-09 | 2018-10-09 | A kind of coal changes gas ball-valve dedicated |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821630985.6U CN209146375U (en) | 2018-10-09 | 2018-10-09 | A kind of coal changes gas ball-valve dedicated |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209146375U true CN209146375U (en) | 2019-07-23 |
Family
ID=67268683
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821630985.6U Active CN209146375U (en) | 2018-10-09 | 2018-10-09 | A kind of coal changes gas ball-valve dedicated |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209146375U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109458467A (en) * | 2018-10-09 | 2019-03-12 | 电建阀门有限公司 | A kind of coal changes gas ball-valve dedicated |
-
2018
- 2018-10-09 CN CN201821630985.6U patent/CN209146375U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109458467A (en) * | 2018-10-09 | 2019-03-12 | 电建阀门有限公司 | A kind of coal changes gas ball-valve dedicated |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | "change of name, title or address" |
Address after: 325024 1-2 / F, No. 922, Jinhai Second Road, airport new area, Yongxing street, Longwan District, Wenzhou City, Zhejiang Province Patentee after: Electric power construction Valve Group Co., Ltd Address before: 325000 Binhai Wudao 259, Wenzhou Economic and Technological Development Zone, Wenzhou City, Zhejiang Province Patentee before: DIANJIAN VALVES Co.,Ltd. |
|
| CP03 | "change of name, title or address" |