CN202531863U - Vacuum butterfly valve convenient for maintaining - Google Patents
Vacuum butterfly valve convenient for maintaining Download PDFInfo
- Publication number
- CN202531863U CN202531863U CN201220171514XU CN201220171514U CN202531863U CN 202531863 U CN202531863 U CN 202531863U CN 201220171514X U CN201220171514X U CN 201220171514XU CN 201220171514 U CN201220171514 U CN 201220171514U CN 202531863 U CN202531863 U CN 202531863U
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- Prior art keywords
- valve
- vacuum
- valve body
- valve rod
- fixedly connected
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- Expired - Fee Related
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Abstract
The utility model discloses a vacuum butterfly valve convenient for maintaining. The vacuum butterfly valve comprises a valve body, wherein a valve rod is arranged at the central position of the valve body; the lower end of the valve rod is arranged in a divided ring arranged at the bottom of the valve body; the bottom of the valve body is sealed through a lower end cover, an internal hexagonal bolt and a gasket; the middle part of the valve rod is fixedly connected with a valve plate through a cylindrical pin; a sealing ring is fixedly connected to the periphery of the valve plate through an internal hexagonal bolt and a pressure plate; and the sealing ring is contacted with an inclined surface of a valve body channel gateway. The vacuum butterfly valve has the beneficial effects: a vacuum isolating butterfly valve is designed and manufactured according to a GB/T12238 or JB/T8527 standard, and the assorted use requirement of power station equipment is met. A vacuum sealing structure stuffing chamber is designed, so that vacuum is isolated reliably. The valve rod is subjected to tempering and surface nitriding treatment, so that high corrosion resistance, scratch resistance and wear resistance are realized.
Description
Technical field
The utility model relates to a kind of butterfly valve, particularly a kind of vacuum butterfly valve.
Background technique
Vacuum insulation butterfly valve main body adopts casting to forge structure, has forced seal, realizes zero leakage.Do not have friction between the sealing surface, rise and close conveniently, and the wearing and tearing of sealing surface have automatic compensation function.Simple in structure, compactness, maintenance is convenient, long service life.Valve gap filler chamber is provided with vacuum seal mechanism, have from swelling pressure tightly to act on, and each junction surface adopts the sealing of high-strength expanding material, makes system and isolated from atmosphere, has good vacuum seal performance.This series of valves Connecting format is divided into flange and connects, is welded to connect two kinds, and driving mode is manual, electronic two kinds.But, can not play the vacuum seal buffer action in thermal power plant's steam turbine condensation and negative pressure of vacuum system.
The model utility content
To the deficiency of existing technology, the utility model provides a kind of vacuum butterfly valve easy to maintenance, is applicable to thermal power plant's steam turbine condensation and negative pressure of vacuum system, plays the vacuum seal buffer action.
To achieve these goals, the utility model solution technological scheme that its technical problem adopted is:
Vacuum butterfly valve easy to maintenance comprises valve body, valve rod; The lower end of valve rod is placed in the divided ring of valve body bottom setting, and the valve body bottom is fixedly connected valve plate at the middle part of valve rod through straight pin through lower end cap, hexagon socket head cap screw, gasket seal; The periphery of valve plate is fixedly connected with seal ring through hexagon socket head cap screw and pressing plate; Seal ring contacts with the plane of inclination at valve channel critical point, is provided with vacuum seal structure filler chamber in the valve body of above-mentioned valve rod middle and upper part, in the vacuum seal structure filler chamber filler is housed; Hold-down grid connects, compresses and seal up filler through hex head bolt; Filler chamber's outer wall is provided with bleeder hole, and the top of valve body is fixedly connected with supporting frame through hexagon socket head cap screw, is fixedly connected with gear through hexagon socket head cap screw on the supporting frame; Gear is in transmission connection through flat key and valve rod, and described gear is provided with handwheel.
The material of described valve rod is a high-quality deposition steel.
Described valve body is that structure is forged in casting.
The beneficial effect of the utility model: GB/T12238 pressed by the vacuum insulation butterfly valve or the JB/T8527 standard design is made, and satisfies the supporting usage requirement of power station equipment.Designed vacuum seal structure filler chamber, isolated vacuum is reliable.Valve rod has good corrosion resistance through modified and surfaces nitrided processing, resistance to marring and wear resistance.Flange gasket adopts composite material, and expansion coefficient is big, and air-tightness is good, and assurance system and isolated from atmosphere are reliable.Filler is changed and maintenance can be carried out under not shutdown situation, the operation of convenient and swift not influence system.
Description of drawings
Fig. 1 is the plan view of the utility model;
Fig. 2 is the utility model side of valve body sectional view.
Embodiment
Vacuum butterfly valve easy to maintenance comprises valve body 5, and the center portion of valve body 5 is provided with a valve rod 6; The lower end of valve rod 6 is placed in the divided ring 4 of valve body 5 bottoms setting; Valve body 5 bottoms are fixedly connected valve plate 7 at the middle part of valve rod through straight pin 10 through lower end cap 1, hexagon socket head cap screw, pad 3 sealings, and the periphery of valve plate 7 is fixedly connected with seal ring 11 through hexagon socket head cap screw 8 and pressing plate 9; Seal ring 11 contacts with the plane of inclination 15 at valve body 5 passage critical points; Be provided with vacuum seal structure filler chamber 12 in the valve body 5 of above-mentioned valve rod 6 middle and upper parts, filler 13 is housed in the vacuum seal structure filler chamber 12, hold-down grid connects, compresses and seal up filler 13 through hex head bolt; Filler chamber's 12 outer walls are provided with bleeder hole; The top of valve body 5 is fixedly connected with supporting frame 23 through hexagon socket head cap screw, is fixedly connected with gear 21 through hexagon socket head cap screw on the supporting frame 23, and gear 21 is in transmission connection through flat key 20 and valve rod 6.
Described gear 21 is provided with handwheel 19.
The material of described valve rod 6 is high-quality deposition steel.
Described valve body 5 is that structure is forged in casting.
GB/T12238 pressed by the vacuum insulation butterfly valve or the JB/T8527 standard design is made, and satisfies the supporting usage requirement of power station equipment.Designed vacuum seal structure filler chamber, isolated vacuum is reliable.Valve rod has good corrosion resistance through modified and surfaces nitrided processing, scrape resistence and wear resistance.Flange gasket adopts composite material, and expansion coefficient is big, and air-tightness is good, and assurance system and isolated from atmosphere are reliable.Filler is changed and maintenance can be carried out under not shutdown situation, the operation of convenient and swift not influence system.
This valve be applicable to operating temperature-29 ℃ with≤425 ℃, working medium is on the pipeline of water, steam or air, as start-stop device; Be particularly useful for thermal power plant's steam turbine condensation and negative pressure of vacuum system, play the vacuum insulation seal action.1, designs vacuum seal structure filler chamber, made system and isolated from atmosphere, had the favorable environment protection ability.2, selection is fastidious, meets domestic and international relevant criterion, and the total quality of material is high.3, the sealing pair pairing is rationally advanced, has improved sealability, long service life.4, open-shut device adopts the rigid sealing configuration of oval cone, and opening and closing does not have friction, opens and closes easily, and easy to maintenance, sealing is reliable, function admirable.5, valve rod adopts high-quality deposition steel, and good corrosion resistance, resistance to marring and wear resistance are arranged.6, flange gasket adopts composite material, and expansion coefficient is big, air-tightness good, assurance system and isolated from atmosphere are reliable; Filler is changed and maintenance can be carried out under not shutdown situation, the operation of convenient and swift not influence system.
Claims (4)
1. vacuum butterfly valve easy to maintenance; Comprise valve body (5), valve rod (6), the lower end of valve rod (6) is placed in the divided ring (4) of valve body (5) bottom setting; Valve body (5) bottom is through lower end cap (1), hexagon socket head cap screw, pad (3) sealing; Middle part at valve rod is fixedly connected valve plate (7) through straight pin (10), and the periphery of valve plate (7) is fixedly connected with seal ring (11) through hexagon socket head cap screw (8) and pressing plate (9), and seal ring (11) contacts with the plane of inclination (15) at valve body (5) passage critical point; It is characterized in that; Be provided with vacuum seal structure filler chamber (12) in the valve body (5) of said valve rod (6) middle and upper part, filler (13) is housed in the vacuum seal structure filler chamber (12), hold-down grid connects, compresses and seal up filler (13) through hex head bolt; Filler chamber (12) outer wall is provided with bleeder hole; The top of valve body (5) is fixedly connected with supporting frame (23) through hexagon socket head cap screw, and supporting frame (23) is gone up and is fixedly connected with gear (21) through hexagon socket head cap screw, and gear (21) is in transmission connection through flat key (20) and valve rod (6).
2. a kind of vacuum butterfly valve easy to maintenance according to claim 1 is characterized in that described gear (21) is provided with handwheel (19).
3. vacuum butterfly valve easy to maintenance according to claim 1, the material that it is characterized in that described valve rod (6) are the deposition steel.
4. vacuum butterfly valve easy to maintenance according to claim 1 is characterized in that described valve body (5) is that structure is forged in casting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220171514XU CN202531863U (en) | 2012-04-20 | 2012-04-20 | Vacuum butterfly valve convenient for maintaining |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220171514XU CN202531863U (en) | 2012-04-20 | 2012-04-20 | Vacuum butterfly valve convenient for maintaining |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202531863U true CN202531863U (en) | 2012-11-14 |
Family
ID=47133050
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220171514XU Expired - Fee Related CN202531863U (en) | 2012-04-20 | 2012-04-20 | Vacuum butterfly valve convenient for maintaining |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202531863U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110167651A (en) * | 2017-01-26 | 2019-08-23 | Hydac流体护理中心有限公司 | Filter for installation |
-
2012
- 2012-04-20 CN CN201220171514XU patent/CN202531863U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110167651A (en) * | 2017-01-26 | 2019-08-23 | Hydac流体护理中心有限公司 | Filter for installation |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121114 Termination date: 20130420 |