CN201412539Y - High-pressure large-diameter fracturing gate valve - Google Patents
High-pressure large-diameter fracturing gate valve Download PDFInfo
- Publication number
- CN201412539Y CN201412539Y CN2009200733859U CN200920073385U CN201412539Y CN 201412539 Y CN201412539 Y CN 201412539Y CN 2009200733859 U CN2009200733859 U CN 2009200733859U CN 200920073385 U CN200920073385 U CN 200920073385U CN 201412539 Y CN201412539 Y CN 201412539Y
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Abstract
The utility model provides a large-diameter fracturing gate valve in the technical scheme. The utility model is characterized in that the gate valve comprises a valve body, wherein a valve cover is connected on the valve body in a fixing and sealing way; the valve cover is connected with a ball screw by a bearing gland in a sealing way; the ball screw is fixedly connected with a hand wheel by a connecting sleeve; a bearing is arranged in the bearing gland; one end of the ball screw near the bearing is connected with a valve rod; the lower side of the bearing is provided with a packing gland; the packing gland, the valve cover and the valve rod are sealed with each other by a rod seal; a valve seat is arranged at the middle part of the valve body; a valve plate is arranged at the middle part of the valve seat; the valve plate is connected with the valve rod by a T-shaped connecting block; a guide plate is arranged at the side surface of the valve plate; and the valve body is sealed withthe valve seat. The gate valve has the advantages that the transmission friction force is small, the operation is convenient; the assembling is simple; the impact damage resistance of the valve seatis high; and the service life is long.
Description
Technical field
The utility model relates to a kind of high-pressure large-caliber pressure break gate valve, is used for the oil field compression fracture operation, belongs to downhole operation equipment technical field behind the oilfield drilling.
Background technique
Fracturing work need be carried out to oil-well strata for increasing oil well output in the oil field.The pressure of conventional fracturing work can be higher than the equipment rated pressure, particularly high-pressure large-caliber oil well of ordinary production, " 15; 000psi, to 9 " 5 as 4-1/16,000psi, equipment is proposed following the requirement: in the operation during frequent opening and closing, personnel can successfully operate at the scene; Can prevent medicine that pressure break is used and extra large sand etc. to the valve internal structure, particularly sealing part dashes damage.Traditional pressure break gate valve can not satisfy above-mentioned requirements.
Summary of the invention
The purpose of this utility model provides a kind of valve that can use when the operation of high-pressure large-caliber oil-gas field fracturing.
For realizing above purpose, the technical solution of the utility model provides a kind of heavy caliber pressure break gate valve, it is characterized in that, comprise valve body, fixed seal connection has valve gap on the valve body, valve gap is tightly connected by bearing pressure cap and ball screw, and ball screw is fixedlyed connected with handwheel by connecting sleeve, and bearing pressure cap inside is provided with bearing, ball screw is connected with valve rod by an end of bearing, the bearing downside is provided with the packing pressure cap, the packing pressure cap, seal by rod seal between valve gap and the valve rod, the valve body middle part is provided with valve seat, the valve seat middle part is provided with valve plate, valve plate connects valve rod by T shape contiguous block, and the valve plate side is provided with guide plate, valve body and valve base chamber sealing.
Further, the valve plate downside is provided with the balance valve rod, and the balance valve rod outside is provided with down packing pressure cap sheath, and the sectional area of balance valve rod is identical with valve rod.
Further, valve seat with valve body be fitted to each other that built-up welding has Ni-based or cobalt base alloy on the face.
The utility model adopts the plate valve of rising stem (RS.) structure, and balance valve rod and ball screw are set.Because common gate valve has only the single valve rod on top, causes very big pressure reduction under the high pressure operating mode, this pressure reduction increases the power that acts on the valve plate drving sprial, thereby has strengthened the difficulty of valve operation.Adopted the balance valve rod of bottom on the structure,, like this, in the high pressure valve pocket, just eliminated the power that is applied on the drving sprial because the diameter of balance valve rod and valve rod is the same; Ball screw is changed into rolling friction to sliding friction, in theory frictional force is reduced an order of magnitude, is that a common operator can be opened under high-pressure situations like a cork or throttle down carries out fracturing work.
Need take a comprehensive measure in order to prevent that pressure break medicine and extra large sand from dashing to decrease to sealing surface: at first the rigidity fit up gap between valve plate, valve seat and the valve body is optimized selection, can not make too pine and cause sealing surface dash to be decreased easily of gap, can not too closely easily cause the assembling difficulty or directly form sealing face damage, for the specification of each valve of using as pressure break, there is specific numerical value its fit up gap; For the sealing surface of seat that causes easily on the valve body that causes seal failure towards decreasing, adopt hardness higher relatively, process after the nickel-base alloy of good resistance corrosion ability such as Inconel 625 alloys or cobalt base alloy such as Stellite 6 alloy welding deposits are arranged, the not only anticorrosive but also anti-impact in the surface of formation is decreased.
The utlity model has following advantage:
1. gearing friction power is little, is convenient to operation, is the unique selection of high-pressure large-caliber fracturing work valve;
2. assembling is simple;
3. the valve seat anti-impact is decreased ability height, long service life.
Description of drawings
Fig. 1 is a kind of heavy caliber pressure break gate valve structure schematic representation;
Fig. 2 is a kind of heavy caliber pressure break gate valve partial enlarged drawing.
Embodiment
The utility model is described in further detail below in conjunction with drawings and Examples.
Embodiment 1
As shown in Figure 1, be a kind of heavy caliber pressure break gate valve, it is by handwheel 1, connecting sleeve 2, bolt 3, packing ring 4, sealing 22 in ball screw 5, bearing pressure cap 6, valve rod 7, T shape contiguous block 8, bonnet nut 9, valve gap 10, valve body 11, balance valve rod 12, bearing 13, packing pressure cap 14, pin 15, the seat of honour 16, rod seal 17, gasket ring 18, guide plate 19, valve plate 20, valve seat external sealed 21, the valve seat, valve seat 23 and following packing pressure cap sheath 24 are formed.
Fixed seal connection has valve gap 10 on the valve body 11, valve gap 10 is tightly connected by bearing pressure cap 6 and ball screw 5, ball screw 5 is fixedlyed connected connecting sleeve 2 by bolt 3 with packing ring 4, connecting sleeve 2 fixedly connected handwheels 1, as shown in Figure 2, be heavy caliber pressure break gate valve partial enlarged drawing, bearing pressure cap 6 inside are provided with bearing 13, ball screw 5 is connected with valve rod 7 by pin 15 by an end of bearing 13, bearing 13 downsides are provided with packing pressure cap 14, packing pressure cap 14, the gap of valve gap 10 and valve rod 7 is by the seat of honour 16 and rod seal 17 sealings, valve body 11 middle parts are provided with valve seat 23, and valve seat 23 middle parts are provided with valve plate 20, and valve plate 20 connects valve rod 7 by T shape contiguous block 8, valve plate 20 sides are provided with guide plate 19,23 sealings of valve body 11 and valve seat.
Rotate by handwheel 1 and to make ball screw (nut) 5 rotate, ball screw 5 is done linear relative movement, by valve rod 7 and T shape contiguous block 8, drives valve plate 20 and moves up and down, and forms the unlatching of valve or closes.
Balance valve rod 12 is arranged at valve plate 20 bottoms, because its sectional area is identical with upper valve rod 7, can offset the pressure reduction that valve internal pressure causes, and has also just offset the axial force that acts on the ball screw 5.
As embodiment's 1 described a kind of heavy caliber pressure break gate valve, difference be valve seat 23 with valve body 11 be fitted to each other that built-up welding has Stellite 6 alloys on the face.
Claims (5)
1. high-pressure large-caliber pressure break gate valve, it is characterized in that, comprise valve body (11), valve body (11) is gone up fixed seal connection valve gap (10), valve gap (10) is tightly connected by bearing pressure cap (6) and ball screw (5), ball screw (5) is fixedlyed connected with handwheel (1) by connecting sleeve (2), bearing pressure cap (6) inside is provided with bearing (13), ball screw (5) is connected with valve rod (7) by an end of bearing (13), bearing (13) downside is provided with packing pressure cap (14), packing pressure cap (14), seal by rod seal (17) between valve gap (10) and the valve rod (7), valve body (11) middle part is provided with valve seat (23), and valve seat (23) middle part is provided with valve plate (20), and valve plate (20) connects valve rod (7) by T shape contiguous block (8), valve plate (20) side is provided with guide plate (19), sealing between valve body (11) and valve seat (23).
2. a kind of high-pressure large-caliber pressure break gate valve as claimed in claim 1 is characterized in that valve plate (20) downside is provided with balance valve rod (12), and balance valve rod (12) outside is provided with down packing pressure cap sheath (24), and the sectional area of balance valve rod (12) is identical with valve rod (7).
3. a kind of high-pressure large-caliber pressure break gate valve as claimed in claim 1, it is characterized in that valve seat (23) with valve body (11) be fitted to each other that built-up welding has nickel-base alloy or cobalt base alloy on the face.
4. a kind of high-pressure large-caliber pressure break gate valve as claimed in claim 3 is characterized in that described nickel-base alloy is Inconel 625 alloys.
5. a kind of high-pressure large-caliber pressure break gate valve as claimed in claim 3 is characterized in that described cobalt base alloy is Stellite 6 alloys.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200733859U CN201412539Y (en) | 2009-06-04 | 2009-06-04 | High-pressure large-diameter fracturing gate valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200733859U CN201412539Y (en) | 2009-06-04 | 2009-06-04 | High-pressure large-diameter fracturing gate valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201412539Y true CN201412539Y (en) | 2010-02-24 |
Family
ID=41714423
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200733859U Expired - Fee Related CN201412539Y (en) | 2009-06-04 | 2009-06-04 | High-pressure large-diameter fracturing gate valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201412539Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101956836A (en) * | 2010-08-13 | 2011-01-26 | 上海飞球阀门有限公司 | Special valve provided with shield for high-temperature sweeping of catalytic unit |
| CN104595509A (en) * | 2014-12-15 | 2015-05-06 | 赖卫华 | Gate valve |
| CN104864174A (en) * | 2015-05-22 | 2015-08-26 | 上海平安高压调节阀门有限公司 | Build up welding structure of ultra-supercritical generator set steam valve sealing face |
| CN109356551A (en) * | 2018-12-10 | 2019-02-19 | 美钻深海能源科技研发（上海）有限公司 | A kind of pressure break gate valve of the super-pressure heavy caliber with effort-saving mechanism |
| CN110397743A (en) * | 2019-07-25 | 2019-11-01 | 江苏圣泰阀门有限公司 | A kind of flat gate valve |
-
2009
- 2009-06-04 CN CN2009200733859U patent/CN201412539Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101956836A (en) * | 2010-08-13 | 2011-01-26 | 上海飞球阀门有限公司 | Special valve provided with shield for high-temperature sweeping of catalytic unit |
| CN104595509A (en) * | 2014-12-15 | 2015-05-06 | 赖卫华 | Gate valve |
| CN104864174A (en) * | 2015-05-22 | 2015-08-26 | 上海平安高压调节阀门有限公司 | Build up welding structure of ultra-supercritical generator set steam valve sealing face |
| CN109356551A (en) * | 2018-12-10 | 2019-02-19 | 美钻深海能源科技研发（上海）有限公司 | A kind of pressure break gate valve of the super-pressure heavy caliber with effort-saving mechanism |
| CN110397743A (en) * | 2019-07-25 | 2019-11-01 | 江苏圣泰阀门有限公司 | A kind of flat gate valve |
| CN110397743B (en) * | 2019-07-25 | 2020-10-27 | 江苏圣泰阀门有限公司 | Flat 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: 20100224 Termination date: 20180604 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |