CN202418661U - Easily-opened high-pressure gate valve with one hand wheel and two valve rods - Google Patents
Easily-opened high-pressure gate valve with one hand wheel and two valve rods Download PDFInfo
- Publication number
- CN202418661U CN202418661U CN2012200018764U CN201220001876U CN202418661U CN 202418661 U CN202418661 U CN 202418661U CN 2012200018764 U CN2012200018764 U CN 2012200018764U CN 201220001876 U CN201220001876 U CN 201220001876U CN 202418661 U CN202418661 U CN 202418661U
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- valve
- valve rod
- ball bearing
- flashboard
- connecting sleeve
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- Expired - Fee Related
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Abstract
The utility model relates to an easily-opened high-pressure gate valve with one hand wheel and two valve rods. The easily-opened high-pressure gate valve is used for opening and closing devices on oil-gas pipelines and wellhead devices. The gate valve can be easily opened and is stable in opening, long in service life and low in cost. The technical scheme is that an upper valve rod and a lower valve rod are connected through a connection sleeve, and a hand wheel is installed at the top of the upper valve rod. The connection sleeve comprises two semi-connection sleeves and a thrust ball bearing. The wedge disc groove comprises a wedge disc groove casing, a transverse shaft and a radial ball bearing, wherein the radial ball bearing and the transverse shaft are assembled in an interference mode. The wedge disc groove is welded in an inner cavity of a valve body, a wedge disc is contacted with the radial ball bearing in the wedge disc groove, and the lower end of the lower valve rod is connected with the wedge disc and installed in a cavity formed by the valve body and a valve cover. The upper end of the lower valve rod is provided with a valve rod nut and a hand wheel, a valve support is installed at the top of the valve cover, a sealing pressing cover is installed on the valve cover, and an eyelet bolt is used for pressing sealing fillers in an annular space between the sealing pressing cover and the valve cover. The gate valve bears small friction force in opening and closing, is easy to open and close, stable in opening and closing and convenient to operate, and prolongs service life.
Description
Technical field
The utility model relates to a kind of start-stop device that is used on oil and gas pipes and the wellhead assembly, and what be specifically related to is that a kind of singlehanded wheel double stub shaft is prone to open the high pressure gate valve.
Background technique
Existing high pressure gate valve generally is used for fluid line, because the hydrodynamic pressure of pipe interior is higher, pipeline is longer; When valve is being opened; Because flashboard is imported and exported the pressure reduction of pressure at both sides, flashboard outlet one side receives very big frictional force, makes the high pressure gate valve under normal manual case; It is bigger to receive the breakdown resistance, and breakdown is unstable; When gate valve valve latus rectum is big; Corresponding valve rod is also longer, and flexibility is bigger, and single valve bar when assembling requires nut very high with the coaxality requirement of sealing gland; Otherwise deflection often appears in valve rod; Make valve rod and Stem Mut and valve rod and close gland produce eccentric wear, thereby make valve opening and closing moment big, open and close difficulty; Deposit a lot of sliding frictions in the existing gate valve, increasing the moment of opening, reducing valve working life.
Summary of the invention
The purpose of the utility model is: in order to open gate valve like a cork, breakdown is stable, and life-saving reduces cost, and the spy provides a kind of singlehanded wheel double stub shaft to be prone to open the high pressure gate valve.
In order to achieve the above object; The utility model adopts following technological scheme: a kind of singlehanded wheel double stub shaft is prone to open the high pressure gate valve, comprises valve body, valve gap, sealing gland, handwheel, upper valve rod, lower valve rod, connecting sleeve, flashboard and flashboard slot, and its structure characteristic is: elevator mechanism is made up of upper valve rod and lower valve rod and connecting sleeve; Handwheel is equipped with at the upper valve rod top; And fix with nut, rotation hand wheel is when making the upper valve rod rotation and lifting; Lower valve rod goes up and down not rotate, and goes up and down thereby drive the flashboard that is attached thereto; Connecting sleeve is made up of two and half connecting sleeves and thrust ball bearing, and connecting sleeve is connected upper valve rod with lower valve rod, and lower valve rod was fixed when thrust ball bearing made the upper valve rod rotation; Flashboard slot is made up of flashboard slot shell, transverse axis and radial ball bearing; Transverse axis places the radial ball bearing center, radial ball bearing and transverse axis interference assembling, and flashboard slot is welded in the body cavity; Flashboard contacts with the interior radial ball bearing of flashboard slot, drives radial ball bearing when flashboard goes up and down and rolls; The lower end of lower valve rod is connected with flashboard, is installed in the cavity of valve body and valve gap formation; The upper end of upper valve rod is equipped with Stem Mut and handwheel, and valve rack is installed in the top of valve gap, and the valve oil gun is installed on valve rack, and locking nut is contained on Stem Mut and the valve rack, and sealing gland is installed in above the valve gap.With swing bolt stuffing box packing is pressed in the annular space between sealing gland and the valve gap; Steel ball is installed in the lacuna between Stem Mut and locking nut and the valve rack.The lower end of upper valve rod is the multidiameter shaft shape, and the end becomes protruding spherical shape; The upper end of lower valve rod is the multidiameter shaft shape, and the end is the concave spherical surface shape; The inner upper end of connecting sleeve is provided with thrust ball bearing, and upper valve rod and lower valve rod link together with the connecting sleeve that thrust ball bearing is housed.
The utility model is being provided with steel ball between Stem Mut and the locking nut and in the lacuna between Stem Mut and the valve gap, thereby sliding friction is become rolling friction as much as possible reducing friction, thereby reduces the keying moment of valve; Lower valve rod and connecting sleeve composite structure reduce single shaft length in the employing, reduce the assembly precision requirement, reduce the eccentric wear phenomenon, thereby reduce valve opening and closing moment, and life-saving also is convenient to change valve rod, and conservation reduces cost; During rotation hand wheel, the upper valve rod rotation is risen and is driven the lower valve rod rising, and radial ball bearing rolls on flashboard, and the force of sliding friction that makes existing flashboard receive becomes force of rolling friction, thereby reduces required lifting force.
The beneficial effect of the utility model is: gate valve is in opening-closing process, and the suffered frictional force of flashboard, valve rod and Stem Mut is smaller, thereby reduces required keying moment, makes valve opening and closing easily, steadily, and is easy to operate, life-saving.
Description of drawings
Fig. 1 is that the singlehanded wheel of the utility model double stub shaft is prone to open high pressure gate valve structural representation.
Fig. 2 is a flashboard slot structural representation in this gate valve.
Fig. 3 is half connecting sleeve structural representation.
Fig. 4 is connecting sleeve, thrust ball bearing and valve rod group assembling structure schematic representation up and down.
Among the figure: 1. valve body, 2. valve gap, 3. sealing gland, 4. swing bolt, 5. connecting sleeve, 6. valve rack; 7. locking nut, 8. handwheel, 9. Stem Mut, 10. valve oil gun, 11. steel balls, 12. upper valve rods; 13. stuffing box packing, 14. lower valve rods, 15. flashboard slots, 16. radial ball bearings, 17. flashboard slot shells; 18. transverse axis, 19. nuts, 20. flashboards, 21. thrust ball bearings, 22. half connecting sleeves.
Embodiment
Below in conjunction with accompanying drawing the utility model is elaborated.
Referring to Fig. 1; A kind of singlehanded wheel double stub shaft is prone to open the high pressure gate valve and comprises valve body 1, valve gap 2, sealing gland 3, connecting sleeve 5, valve rack 6, upper valve rod 12, lower valve rod 14, flashboard slot 15 and flashboard 20, and flashboard slot 15 is welded in valve body 1 inner chamber, and flashboard 20 places in the middle of the flashboard slot 15; Lower valve rod 14 lower ends are connected with flashboard 20; Lower valve rod 14 upper ends are connected for 12 times with upper valve rod through connecting sleeve 5, and the upper end of upper valve rod 12 is equipped with Stem Mut 9 and handwheel 8, and valve rack 6 is positioned at valve gap 2 tops; Valve oil gun 10 is housed on the valve rack 6, and locking nut 7 is contained on Stem Mut 9 and the valve rack 6.
Referring to Fig. 2, transverse axis 18 is arranged on the flashboard slot shell 17, transverse axis 18 assemblies flashboard slot 15 with radial ball bearing 16 interference.
Referring to Fig. 3, have tapped hole on half connecting sleeve 22, two and half connecting sleeves 22 combine connecting sleeve 5 through the bolt connection.
Referring to Fig. 4, upper valve rod 12 lower ends are multidiameter shaft shapes, and the end is protruding spherical shape; Lower valve rod 14 upper ends are multidiameter shaft shapes, and the end is the concave spherical surface shape; The inner upper end of connecting sleeve 5 is provided with thrust ball bearing 21, and upper valve rod 12 links together through the connecting sleeve 5 that thrust ball bearing 21 is housed with lower valve rod 14, and lower valve rod 14 can not rotate when making upper valve rod 12 rotations.
During use, rotation hand wheel 8 drives Stem Muts 9 rotations, makes upper valve rod 12 rotation and liftings; Drive lower valve rod 14 through connecting sleeve 5 and go up and down, make flashboard 20 in flashboard slot 15, go up and down, owing in the flashboard slot 15 radial ball bearing 16 is arranged; Flashboard 20 suffered frictional force are force of rolling friction; Reduce up-down flashboard 20 required lifting force and downforce so to a great extent, thereby reduced required moment, Open valve easily.
Claims (2)
1. a singlehanded wheel double stub shaft is prone to open the high pressure gate valve; Comprise valve body, valve gap, sealing gland, handwheel, upper valve rod, lower valve rod, connecting sleeve, flashboard and flashboard slot; It is characterized in that: elevator mechanism is made up of upper valve rod (12) and lower valve rod (14) and connecting sleeve (5); Handwheel (8) is equipped with at upper valve rod (12) top, and fixing with nut (19); Connecting sleeve (5) is made up of two and half connecting sleeves (22) and thrust ball bearing (21), and connecting sleeve (5) is connected upper valve rod (12) with lower valve rod (14); Flashboard slot (15) is made up of flashboard slot shell (17), transverse axis (18) and radial ball bearing (16), and transverse axis (18) places radial ball bearing (16) center, radial ball bearing (16) and transverse axis (18) interference assembling; Flashboard slot (15) is welded in valve body (1) inner chamber, and flashboard (20) contacts with the interior radial ball bearing (16) of flashboard slot (15); The lower end of lower valve rod (14) is connected with flashboard (20), is installed in the cavity of valve body (1) and valve gap (2) formation; The upper end of upper valve rod (12) is equipped with Stem Mut (9) and handwheel (8); Valve rack (6) is installed in the top of valve gap (2); Valve oil gun (10) is housed on valve rack (6), and locking nut (7) is contained on Stem Mut (9) and the valve rack (6); Sealing gland (3) is installed in above the valve gap (2), with swing bolt (4) stuffing box packing (13) is pressed in the annular space between sealing gland (3) and the valve gap (2); Steel ball (11) is installed in the lacuna between Stem Mut (9) and locking nut (7) and the valve rack (6).
2. high pressure gate valve according to claim 1 is characterized in that: the lower end of above-mentioned upper valve rod (12) is the multidiameter shaft shape, and the end is protruding spherical shape; The upper end of above-mentioned lower valve rod (14) is the multidiameter shaft shape, and the end is the concave spherical surface shape; The inner upper end of connecting sleeve (5) is provided with thrust ball bearing (21), and upper valve rod (12) links together with the connecting sleeve (5) that thrust ball bearing (21) are housed with lower valve rod (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200018764U CN202418661U (en) | 2012-01-05 | 2012-01-05 | Easily-opened high-pressure gate valve with one hand wheel and two valve rods |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200018764U CN202418661U (en) | 2012-01-05 | 2012-01-05 | Easily-opened high-pressure gate valve with one hand wheel and two valve rods |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202418661U true CN202418661U (en) | 2012-09-05 |
Family
ID=46743431
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200018764U Expired - Fee Related CN202418661U (en) | 2012-01-05 | 2012-01-05 | Easily-opened high-pressure gate valve with one hand wheel and two valve rods |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202418661U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110159774A (en) * | 2018-02-13 | 2019-08-23 | 秦皇岛秦冶重工有限公司 | Electric knives gate valve |
-
2012
- 2012-01-05 CN CN2012200018764U patent/CN202418661U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110159774A (en) * | 2018-02-13 | 2019-08-23 | 秦皇岛秦冶重工有限公司 | Electric knives gate valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120905 Termination date: 20130105 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |