CN201121508Y - Visible hidden lever flat gate valve - Google Patents
Visible hidden lever flat gate valve Download PDFInfo
- Publication number
- CN201121508Y CN201121508Y CNU2007201735655U CN200720173565U CN201121508Y CN 201121508 Y CN201121508 Y CN 201121508Y CN U2007201735655 U CNU2007201735655 U CN U2007201735655U CN 200720173565 U CN200720173565 U CN 200720173565U CN 201121508 Y CN201121508 Y CN 201121508Y
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- China
- Prior art keywords
- valve
- indication
- thread
- gate valve
- vernier
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- Expired - Fee Related
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Abstract
The utility model relates to a visible inside screw non-rising stem type flat gate valve, belonging to the technical field of wellhead devices in oil exploration engineering. The visible inside screw non-rising stem type flat gate valve is composed of a valve body (17), a valve seat (16), a flashboard (15), a valve stem (14), a valve cover (12), a press cap (11), an indication vernier (6), a hand wheel (5), etc. and is characterized in that the upper and the lower ends of the valve stem (14) are provided with two threads which are identical in winding direction and different in thread pitch; the lower thread is a trapeziform thread and connected with a hoisting nut (13) arranged on the flashboard (15); the upper thread is a triangular thread, through which the indication vernier (6) is arranged on the valve stem (14); an indication sleeve (7) is a metal round barrel one side of which is provided with a vertical opening, the two sides of the vertical opening are provided with opening degree scales; the indication sleeve (7) is sleeved outside the indication vernier (6) and fixed on the press cap (11); the outside of the indication sleeve (7) is respectively provided with a transparent hood (3) and a protection hood (1). The visible inside screw non-rising stem type flat gate valve has the advantages of good bearing performance of the valve body, small torque during opening and closing, accurate indication of opening and closing states, strong adaptability to environments, and safety and reliability.
Description
Technical field:
The utility model relates to a kind of visual dark rod flat plate gate valve, belongs to petroleum engineering wellhead equipment technical field.
Background technology:
(gas) wellhead assembly that recovers the oil is oil (gas) field a kind of mechanical bearing device commonly used, is used to control and guiding gas stream, hangs between oil pipe, sealing production casing and the oil pipe annular space and creates operating condition under the testing well.Gate valve is being undertaken and is being opened or block pipeline medium and control high-pressure medium flows to assigned address according to artificial needs task as the core component of (gas) wellhead assembly that recovers the oil.Its structure, operability, security reliability etc. directly affect the safety and the reliability of whole wellhead assembly.
In (gas) wellhead assembly that recovers the oil, normally used is flat gate valve.Flat gate valve is divided into rising stem (RS.) formula and blind rod type two big classes.Rising stem (RS.) formula flat gate valve can be judged whether open and close of gate valve from appearance, and is very directly perceived, but its general structure complexity, cost is very high.The blind rod type flat gate valve is littler, in light weight than rising stem (RS.) formula flat gate valve volume, and cost is low.But the shortcoming of blind rod type flat gate valve maximum is not see whether open and close of gate valve from appearance, makes the operator be difficult to adapt to, and this has just restricted the popularization and the use of blind rod type flat gate valve.
At this significant disadvantages of blind rod type flat gate valve, have the people openly to propose some improvement projects, but all there is the deficiency of following three aspects in these improvement projects: one, display device structure complexity, processing and assembling difficulty.The aperture size that two, can not quantitatively show valve.Three, can not adapt to the on-the-spot abominable working environment of oil recovery (gas), be subjected to the destruction of corrosive gas and dust storm easily.
Summary of the invention:
In order to overcome the deficiencies in the prior art part, the purpose of this utility model is to provide a kind of visual dark rod flat plate gate valve, and it is good to make it to have the valve body load performance, and switching torque is little, accurately indicator cock state, characteristics that environmental suitability is strong, safe and reliable.
The utility model is to realize above-mentioned purpose by following technical solution.
In the structure of visual dark rod flat plate gate valve, be provided with valve body (17), valve seat (16), flashboard (15), valve rod (14), valve gap (12), pressure cap (11), thrust ball bearing (10), indication vernier (6), handwheel (5) etc.Be provided with two sections screw threads that rotation direction is identical, pitch is different at the two ends up and down of valve rod (14).The screw thread of lower end is a trapezoidal thread, is connected with hoisting nut (13), and pitch is bigger.The screw thread of upper end is a triangle thread, is connected with indication vernier (6), and pitch is less.The top of valve rod (14) is a hexagonal structure, is connected to a fixed with handwheel (5).Hoisting nut (13) is installed in the upper end of flashboard (15), and valve rod (14) is connected with flashboard (15) by hoisting nut (13).The inner ring of indication vernier (6) also is provided with triangle thread, and indication vernier (6) is enclosed within on the valve rod (14) by triangle thread.Indication sleeve (7) is a metallic cylinder, has a vertical opening in the one side, indicates aperture tolerance scale in the both sides of opening.Indication sleeve (7) is enclosed within outside the indication vernier (6) and is fixed on the pressure cap (11).Outside at indication sleeve (7) is separately installed with translucent cover (3) and protective cover (1).
The utility model compared with prior art has following beneficial effect:
1, valve body processes with the forged steel blank, has improved high pressure and the corrosion resistant ability of bearing.
2, terminal with compact integral structure, processing and easy to assembly, switching torque is little, has saved cost, has improved reliability.
3, the on off state of gate valve and aperture can directly read, and have increased protector, and environmental suitability is strong, has improved operability.
Description of drawings:
Fig. 1 is the general structure schematic diagram of visual dark rod flat plate gate valve.
Fig. 2 is the structural representation of the valve stem part of visual dark rod flat plate gate valve.
Fig. 3 is the installation site schematic diagram of the indication sleeve part of visual dark rod flat plate gate valve.
Fig. 4 is the structure sectional view of the indication vernier part of visual dark rod flat plate gate valve.
Fig. 5 is the structure vertical view of the indication vernier part of visual dark rod flat plate gate valve.
Fig. 6 is the structure sectional view of the indication sleeve part of visual dark rod flat plate gate valve.
Fig. 7 is the structure vertical view of the indication sleeve part of visual dark rod flat plate gate valve.
In the drawings: 1. protective cover, 2. hex screw, 3. translucent cover, 4. asbestos gasket, 5. handwheel, 6. indication vernier, 7. indication sleeve, 8. rubber seal, 9. hex screw, 10. thrust ball bearing, 11. pressure caps, 12. valve gaps, 13. hoisting nut, 14. valve rods, 15. flashboards, 16. valve seats, 17. valve bodies.
The specific embodiment:
The utility model visual dark rod flat plate gate valve is made up of valve body (17), valve seat (16), flashboard (15), valve rod (14), hoisting nut (13), valve gap (12), pressure cap (11), thrust ball bearing (10), indication vernier (6), handwheel (5) etc.Valve body (17) processes with the forged steel blank, and the bottom of flashboard (15) has pod apertures, and its aperture is slightly larger than the inside nominal diameter of gate valve.Valve rod (14) adopts monolithic construction, is provided with two sections screw threads that rotation direction is identical, pitch is different at the two ends up and down of valve rod (14).The screw thread of lower end is a trapezoidal thread, is connected with hoisting nut (13), and pitch is bigger.The screw thread of upper end is a triangle thread, is connected with indication vernier (6), and pitch is less.The top of valve rod (14) is a hexagonal structure, is connected to a fixed with handwheel (5).Hoisting nut (13) is installed in the upper end of flashboard (15), and valve rod (14) is connected with flashboard (15) by hoisting nut (13).The inner ring of indication vernier (6) also is provided with triangle thread, and indication vernier (6) is enclosed within on the valve rod (14) by triangle thread, forms a rotary motion pair.Because the trapezoidal thread at the two ends up and down of valve rod (14) is identical with the rotation direction of triangle thread, when driving valve rod (14) rotation by handwheel (5), just can guarantee flashboard (15) and the motion of indication vernier (6) synchronization lifting, reach the purpose of accurate indication gate valve aperture.Indication sleeve (7) be a metallic cylinder, has a vertical opening in the one side, indicates aperture in the both sides of opening and measures scale, is convenient to that the observer observes and record.The opening restriction indication vernier (6) of indication sleeve (7) is done definitely and is rotatablely moved, thereby realizes indicating vernier (6) to do rectilinear motion up and down.Indication sleeve (7) is enclosed within outside the indication vernier (6), is fixed on the pressure cap (11) by 4 hex screws (2) uniform on the circumference.Translucent cover (3) adopts transparent glass fiber material to make, be installed in the outside of indication sleeve (7), protective cover (1) adopts etch-proof steel material to make, have peep hole in the one side, be installed in the outside of translucent cover (3), and assemble by matched in clearance between the pressure cap (11), and be positioned on the pressure cap (11) with 3 hex screws (9) uniform on the circumference.
Claims (4)
1. visual dark rod flat plate gate valve, form by valve body (17), valve seat (16), flashboard (15), valve rod (14), valve gap (12), pressure cap (11), thrust ball bearing (10), indication vernier (6), handwheel (5) etc., it is characterized in that being provided with two sections screw threads that rotation direction is identical, pitch is different at the two ends up and down of valve rod (14); The screw thread of lower end is a trapezoidal thread, is connected with hoisting nut (13), and pitch is bigger; The screw thread of upper end is a triangle thread, is connected with indication vernier (6), and pitch is less; The top of valve rod (14) is a hexagonal structure, is connected to a fixed with handwheel (5); Indication sleeve (7) is enclosed within outside the indication vernier (6) and is fixed on the pressure cap (11).
2. visual dark rod flat plate gate valve according to claim 1 is characterized in that hoisting nut (13) is installed in the upper end of flashboard (15), and valve rod (14) is connected with flashboard (15) by hoisting nut (13).
3. visual dark rod flat plate gate valve according to claim 2 is characterized in that indicating the inner ring of vernier (6) also to be provided with triangle thread, and indication vernier (6) is enclosed within on the valve rod (14) by triangle thread.
4. visual dark rod flat plate gate valve according to claim 3, it is characterized in that indicating sleeve (7) to be metallic cylinder, have a vertical opening in the one side, indicate aperture tolerance scale in the both sides of opening, be separately installed with translucent cover (3) and protective cover (1) in the outside of indication sleeve (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201735655U CN201121508Y (en) | 2007-10-10 | 2007-10-10 | Visible hidden lever flat gate valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201735655U CN201121508Y (en) | 2007-10-10 | 2007-10-10 | Visible hidden lever flat gate valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201121508Y true CN201121508Y (en) | 2008-09-24 |
Family
ID=40008734
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201735655U Expired - Fee Related CN201121508Y (en) | 2007-10-10 | 2007-10-10 | Visible hidden lever flat gate valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201121508Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102454383A (en) * | 2010-10-21 | 2012-05-16 | 韦特柯格雷公司 | Selective torque operator for a valve |
-
2007
- 2007-10-10 CN CNU2007201735655U patent/CN201121508Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102454383A (en) * | 2010-10-21 | 2012-05-16 | 韦特柯格雷公司 | Selective torque operator for a valve |
| CN102454383B (en) * | 2010-10-21 | 2017-06-30 | 韦特柯格雷公司 | For the selective torque operator of valve |
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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: 20080924 Termination date: 20091110 |