CN208831755U - Double hard sealing water turbine inlet butterfly valves - Google Patents
Double hard sealing water turbine inlet butterfly valves Download PDFInfo
- Publication number
- CN208831755U CN208831755U CN201821324807.0U CN201821324807U CN208831755U CN 208831755 U CN208831755 U CN 208831755U CN 201821324807 U CN201821324807 U CN 201821324807U CN 208831755 U CN208831755 U CN 208831755U
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- CN
- China
- Prior art keywords
- seal circle
- valve body
- valve
- working seal
- sealing ring
- 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.)
- Expired - Fee Related
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Abstract
The utility model discloses a kind of double hard sealing water turbine inlet butterfly valves, including valve body, butterfly plate, valve seals gland, valve seals, working seal circle and working seal circle pressing plate, the butterfly plate is arranged in valve body, the periphery of the butterfly plate is equipped with working seal circle, the working seal circle is connect by working seal circle gland with butterfly plate, the valve seals cooperated with working seal circle are equipped in valve body, the hardness of valve seals is different from the hardness of working seal circle, the valve seals are connect by valve seals gland with valve body, aforementioned valve seals gland is connect by bolt with valve body.It is not easy to abrade sealing surface when frequently closing, extends sealing ring service life, can be with pressure more preferable, shorten maintenance cycle, saves cost.
Description
Technical field
The utility model belongs to valve technology field, more particularly to a kind of double hard sealing water turbine inlet butterfly valves.
Background technique
Water turbine inlet butterfly valve is power station truncation or the ideal equipment for connecting medium, when load rejection is again at a time when speed regulation
Device break down akinesia when, inlet valve can close under dynamic regimen condition, cut off water flow, and the time for preventing unit from overrunning is super
Permissible value is crossed, fault spread is avoided.Double containment water turbine inlet butterfly valve is respectively equipped with working seal and maintenance sealing, is playing water wheels
Machine intakes valve action simultaneously, uses but also as maintenance butterfly valve, saves the construction cost in power station.Since conventional butterfly valve is soft close
Seal structure wears no resistance, it is difficult to adapt to the biggish use condition of water quality silt content in power station.
Summary of the invention
Place in order to overcome the above-mentioned deficiencies of the prior art, the utility model provide a kind of double hard sealing hydroturbine water intake butterflies
Valve is not easy to abrade sealing surface when frequently closing, extends sealing ring service life, with pressure can replace, and shortens maintenance cycle, section
About cost.
To achieve the above objectives, the present invention adopts the following technical solutions: a kind of double hard sealing water turbine inlet butterfly valves,
It is set including valve body, butterfly plate, valve seals gland, valve seals, working seal circle and working seal circle pressing plate, the butterfly plate
It sets in valve body, the periphery of the butterfly plate is equipped with working seal circle, and the working seal circle passes through working seal circle gland and butterfly plate
Connection, is equipped with the valve seals cooperated with working seal circle in valve body, and the hardness of valve seals is hard with working seal circle
Degree is different, and the valve seals are connect by valve seals gland with valve body, and aforementioned valve seals gland passes through bolt
It is connect with valve body.
In the above-mentioned technical solutions, the face of the working seal circle and valve seals cooperation is inclined surface, valve seal
The cross section of circle is obtuse angle type, and the contact position of valve seals and working seal circle is the multistage face of protrusion.
In the above-mentioned technical solutions, the input end of the valve body is equipped with upstream end cap, maintenance sealing ring, maintenance sealing ring pressure
Plate and piston ring, the maintenance sealing ring are connect by overhauling sealing ring pressing plate with butterfly plate, and piston ring is equipped with to be sealed with maintenance
The sealing surface of cooperation is enclosed, upstream end cap is connected at valve body import, and multiple tracks D type is equipped between the piston ring and valve body and is sealed
Circle.
In the above-mentioned technical solutions, the maintenance sealing ring pressing plate is connect by bolt with butterfly plate.
In the above-mentioned technical solutions, the valve body is equipped with maintenance seal indication mechanism and maintenance sealing locking mechanism.
The beneficial effects of the utility model are: the working seal circle of the water inlet butterfly valve is different from valve seals hardness,
It is not easy to abrade sealing surface when frequently closing, extends working seal circle service life, extend the time between overhauls(TBO)；It will by sealing ring gland
Working seal circle is fixed on butterfly plate, and to butterfly plate sealing ring interchangeability no requirement (NR), without cutting off upstream water source, valve is hung out,
It may be implemented in tape pressure replacement, shorten maintenance cycle, saved maintenance cost；D type sealing ring substitutes O-ring or Yx sealing
Circle, and every place's sealing surface only needs together, to have saved manufacturing cost.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model.
Fig. 2 is the cutaway view Amplified image of I in Fig. 1.
Fig. 3 is the cutaway view Amplified image of II in Fig. 1.
Wherein: 1. valve bodies, 2. butterfly plates, 3. valve seals glands, 4. valve seals, 5. working seal circles, 6. work
Sealing ring gland, 7. upstream end caps, 8. maintenance sealing rings, 9. maintenance sealing ring pressing plates, 10. piston rings, 11.D type sealing ring,
12. overhauling seal indication mechanism, 13. maintenance sealing locking mechanisms.
Specific embodiment
With reference to the accompanying drawing and specific embodiment the utility model is described in further detail.
The double hard sealing water turbine inlet butterfly valves of one kind as depicted in figs. 1 and 2, including valve body 1, butterfly plate 2, valve seals
Gland 3, valve seals 4, working seal circle 5 and working seal circle pressing plate 6, the butterfly plate 2 are arranged in valve body 1, the butterfly plate 2
Periphery be equipped with working seal circle 5, the working seal circle 5 is connect by working seal circle gland 6 with butterfly plate 2, is set in valve body 1
There are the valve seals 4 cooperated with working seal circle 5, the hardness of valve seals 4 is different from the hardness of working seal circle 5, institute
It states valve seals 4 to connect by valve seals gland 3 with valve body 1, aforementioned valve seals gland 3 passes through bolt and valve body
1 connection.The sealing surface of working seal circle 5 uses technique for overlaying, keeps working seal circle 5 different with the hardness of valve seals,
It is not easy to abrade sealing surface when frequently closing, extends working seal circle service life, extend the time between overhauls(TBO).Pass through working seal circle pressure
Working seal circle 5 is fixed on butterfly plate 2 by lid, to the 5 interchangeability no requirement (NR) of working seal circle, without cutting off upstream water source, by valve
Gantry crane goes out, it can be achieved that online replacement with pressure, shortens maintenance cycle, saved maintenance cost.
In the above-mentioned technical solutions, the face that the working seal circle 5 cooperates with valve seals 5 is inclined surface, and valve body is close
The cross section of seal 5 is obtuse angle type, and the contact position of valve seals 5 and working seal circle 5 is the multistage face of protrusion.
As shown in figure 3, the input end of the valve body 1 is equipped with upstream end cap 7, maintenance sealing ring 8, maintenance sealing ring pressing plate 9
With piston ring 10, the maintenance sealing ring 8 is connect by overhauling sealing ring pressing plate 9 with butterfly plate 2, and piston ring 10 is equipped with and maintenance
The sealing surface that sealing ring 8 cooperates, upstream end cap 7 are connected to 2 entrance of valve body, are equipped between the piston ring 10 and valve body 1 more
Road D type sealing ring 11.The seal groove requirement on machining accuracy of O-ring or Yx sealing ring is high, is otherwise easy to turn under the action of water pressure
Turning, water leakage is larger, and to service personnel there are security risk, and 11 machining accuracy of D type sealing ring does not have to very high, will not overturn,
And usage quantity is smaller, has saved manufacturing cost and use cost.
In the above-mentioned technical solutions, the maintenance sealing ring pressing plate 9 is connect by bolt with butterfly plate 2.
In the above-mentioned technical solutions, the valve body 1 is equipped with maintenance seal indication mechanism 12 and maintenance sealing locking mechanism
13。
The preferable specific embodiment of the above, only the utility model, but the protection scope of the utility model is not
It is confined to this, anyone skilled in the art within the technical scope disclosed by the utility model, can readily occur in
Change or replacement, should be covered within the scope of the utility model.
Claims (5)
1. a kind of double hard sealing water turbine inlet butterfly valves, it is characterized in that: close including valve body, butterfly plate, valve seals gland, valve body
Seal, working seal circle and working seal circle pressing plate, the butterfly plate are arranged in valve body, and the periphery of the butterfly plate is equipped with working seal
Circle, the working seal circle are connect by working seal circle gland with butterfly plate, and the valve cooperated with working seal circle is equipped in valve body
The hardness of body sealing ring, valve seals is different from the hardness of working seal circle, and the valve seals pass through valve seals
Gland is connect with valve body, and aforementioned valve seals gland is connect by bolt with valve body.
2. double hard sealing water turbine inlet butterfly valves according to claim 1, it is characterized in that: the working seal circle and valve body
The face of sealing ring cooperation is inclined surface, and the cross sections of valve seals is obtuse angle type, and valve seals and working seal circle
Contact position is the multistage face of protrusion.
3. double hard sealing water turbine inlet butterfly valves according to claim 1, it is characterized in that: the input end of the valve body is equipped with
Upstream end cap, maintenance sealing ring, maintenance sealing ring pressing plate and piston ring, the maintenance sealing ring by maintenance sealing ring pressing plate and
Butterfly plate connection, piston ring are equipped with the sealing surface with maintenance sealing ring cooperation, and upstream end cap is connected at valve body import, the work
Multiple tracks D type sealing ring is equipped between plug ring and valve body.
4. double hard sealing water turbine inlet butterfly valves according to claim 3, it is characterized in that: the maintenance sealing ring pressing plate is logical
Bolt is crossed to connect with butterfly plate.
5. double hard sealing water turbine inlet butterfly valves according to claim 1, it is characterized in that: the valve body is close equipped with overhauling
Seal indicating mechanism and maintenance sealing locking mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821324807.0U CN208831755U (en) | 2018-08-16 | 2018-08-16 | Double hard sealing water turbine inlet butterfly valves |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821324807.0U CN208831755U (en) | 2018-08-16 | 2018-08-16 | Double hard sealing water turbine inlet butterfly valves |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208831755U true CN208831755U (en) | 2019-05-07 |
Family
ID=66309479
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821324807.0U Expired - Fee Related CN208831755U (en) | 2018-08-16 | 2018-08-16 | Double hard sealing water turbine inlet butterfly valves |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208831755U (en) |
-
2018
- 2018-08-16 CN CN201821324807.0U patent/CN208831755U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190507 |