CN212079260U - Well head flat valve - Google Patents
Well head flat valve Download PDFInfo
- Publication number
- CN212079260U CN212079260U CN202020711603.3U CN202020711603U CN212079260U CN 212079260 U CN212079260 U CN 212079260U CN 202020711603 U CN202020711603 U CN 202020711603U CN 212079260 U CN212079260 U CN 212079260U
- Authority
- CN
- China
- Prior art keywords
- valve
- cover
- install
- plate
- upside
- 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.)
- Active
Links
- 238000012856 packing Methods 0.000 claims abstract description 14
- 239000004519 grease Substances 0.000 claims description 6
- 238000002347 injection Methods 0.000 claims description 4
- 239000007924 injection Substances 0.000 claims description 4
- 238000000576 coating method Methods 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims 1
- 238000007789 sealing Methods 0.000 abstract description 8
- 238000013461 design Methods 0.000 abstract description 4
- 238000005553 drilling Methods 0.000 abstract description 4
- 238000011161 development Methods 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 14
- 238000000034 method Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 238000007667 floating Methods 0.000 description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 238000005299 abrasion Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000956 alloy Substances 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000003345 natural gas Substances 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 230000002378 acidificating effect Effects 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
Images
Abstract
The utility model discloses a well head wafer valve, include: the valve body, the upside of valve body has the upper valve gap through the mounting screw, the downside of valve body is through installing down the valve gap, the upside of upper valve gap is through installing the connecting valve, the pneumatic cylinder is installed to the upside of connecting valve, the lower extreme of pneumatic cylinder is connected with the valve rod that passes the upper valve gap, install packing and packing between valve rod and the upper valve gap and press the cap, the lower extreme of valve gap is connected with the safety cover down, the utility model has the advantages that a well head flat valve, structural design is reasonable, and it is convenient to install, as shale gas fracturing wellhead assembly's important part, high pressure resistant, stand wear and tear, sealing performance is good, opens in a flexible way, can satisfy shale gas drilling and adopt needs, is a market prospect fine, the valve that has development potentiality very much.
Description
Technical Field
The utility model relates to a well head valve structure field especially relates to a well head wafer valve.
Background
The shale gas is natural gas which is accumulated in dark mud shale, high-carbon mud shale and interlayer-shaped quarry, silty mud rock, argillaceous siltstone and even sandstone and is stored in a self-generating and self-storing way, the permeability of a shale gas reservoir is low, the exploitation difficulty is large, along with the increasing shortage of energy, people gradually realize the importance of the shale gas as the supplement of the traditional natural gas, and the innovation problems of a new technology and a new process in the shale gas exploitation process are increasingly prominent. The high-pressure staged fracturing technology is a key technology in the scale application of shale gas. The high-pressure large-caliber valve in the fracturing process is core equipment, is required to bear high and low alternating load during fracturing and production, bears the abrasion of acidic sand-containing substances and fine sand, and has small switching moment. At present, the existing wellhead valve in China has poor high pressure resistance, easy abrasion and poor sealing performance, the difference between the design and the manufacture of the valve in China and the international advanced level still exists, and a plurality of high-pressure large-caliber valves depend on import, so that the wellhead valve with high pressure resistance, abrasion resistance and good sealing performance is continuously designed.
SUMMERY OF THE UTILITY MODEL
The purpose of the invention is as follows: the utility model discloses the current shale air drilling well head valve that will solve is high pressure resistance poor, easy wearing and tearing, the poor technical problem of leakproofness, the utility model provides a well head flat valve.
The technical scheme is as follows: a wellhead plate valve comprising: the valve body, the upside of valve body has the upper valve gap through the mounting screw, the downside of valve body is through installing down the valve gap, the upside of upper valve gap is through installing the connecting valve, the pneumatic cylinder is installed to the upside of connecting valve, the lower extreme of pneumatic cylinder is connected with the valve rod that passes the upper valve gap, install packing and packing between valve rod and the upper valve gap and press the cap, the lower extreme of valve gap is connected with the safety cover down, the disk seat is installed to the middle-end of valve body, install wave form spring between disk seat and the valve body, install the baffle on the disk seat, install the valve plate in the baffle, the upper end and the valve rod erection joint of valve plate, the lower extreme of valve plate is connected with the tailrod that stretches into the safety cover, install packing and packing between tail.
Preferably, the upper valve cover and the lower valve cover are respectively provided with an oil grease injection structure.
Preferably, the valve seat and the valve plate are coated with a hard alloy coating.
Advantageous effects
The utility model has the advantages that a well head wafer valve, structural design is reasonable, and it is convenient to install, as shale gas fracturing well head device's important part, high pressure resistant, stand wear and tear, sealing performance are good, open in a flexible way, can satisfy shale gas drilling and adopt needs, is a market prospect fine, very has the valve of development potentiality.
Drawings
Fig. 1 is the utility model discloses a well head wafer valve's front view.
Detailed Description
The invention will be further elucidated by means of specific embodiments in the following description, in conjunction with the drawings, in which: for those skilled in the art, modifications of the invention in various equivalent forms will fall within the scope of the appended claims without departing from the principles of the invention.
Example (b):
as shown in fig. 1, a wellhead plate valve comprises: the valve comprises a valve body 1, an upper valve cover 2 is arranged on the upper side of the valve body 1 through a screw, a lower valve cover 3 is arranged on the lower side of the valve body 1 through a screw, the upper side of the upper valve cover 2 is provided with a connecting valve 4, the upper side of the connecting valve 4 is provided with a hydraulic cylinder 5, the lower end of the hydraulic cylinder 5 is connected with a valve rod 6 which penetrates through the upper valve cover 2, a packing 7 and a packing pressing cap 8 are arranged between the valve rod 6 and the upper valve cover 2, the lower end of the lower valve cover 3 is connected with a protective cover 9, the middle end of the valve body 1 is provided with a valve seat 10, a wave spring 11 is arranged between the valve seat 10 and the valve body 1, a guide plate 12 is arranged on the valve seat 10, a valve plate 13 is arranged in the guide plate 12, the upper end of the valve plate 13 is connected with the valve rod 6, the lower extreme of valve plate 13 is connected with the tail-stock 14 that stretches into safety cover 9, install packing 7 and packing pressure cap 8 between tail-stock 14 and the lower valve gap 3.
And the upper valve cover 2 and the lower valve cover 3 are respectively provided with an oil grease injection structure 15.
The valve seat 10 and the valve plate 13 are coated with hard alloy coatings.
The valve seat 10 adopts a floating symmetrical structure, the valve plate 13 generates axial movement on the valve seat 10, and the valve seat 10 generates radial floating on the valve body 1, so that the valve seat 10 and the valve body 1 are prevented from being scratched in the working process, or the valve seat 10 is clamped on the valve body 1; a wave spring 11 with high expansion compensation performance is arranged between the valve seat 10 and the valve body 1, which can not only realize axial floating of the valve seat 10, but also realize radial floating, ensure that the valve seat 10 is not clamped when in work, and lead the valve seat 10 to have pretightening force, thereby leading the good sealing performance between the valve seat 10 and the valve body 1 to be kept when in low pressure; the guide plate 12 is mounted on the valve seat 10 to eliminate the possibility of the valve plate 13 being skewed and to prevent large grit particles from entering the valve cavity when the valve is half open. A tail rod 14 is added in the valve rod assembly to ensure the pressure balance in the working process of the valve and reduce the torque in the opening and closing process; and an oil grease injection structure 15 is arranged outside the valve, and grease enters the sealing surface of the valve through a grease injector and the valve seat, so that zero leakage of the valve is achieved, and the inner cavity of the valve body is conveniently lubricated.
When the wellhead flat valve provided by the utility model is used, the shale gas drilling and production wellhead flat valve drives the valve rod 6 to move up and down through the hydraulic cylinder 5, so as to realize the up-and-down movement of the valve plate 13, thereby realizing the wide opening and closing of the operation valve; the valve plate 13 and the valve seat 10 adopt symmetrical structural design, when the valve is in a full-open state, no shale gas pressure exists at the inlet and outlet ends of the valve or the shale gas pressure at the inlet end is equal to the shale gas pressure at the outlet end, the wave spring 11 between the valve seat 10 and the valve body 1 can enable the valve plate 13 and the valve seat 10 to automatically align, the valve plate 13 is in the center line position of the valve body, and the valve seat 10 is tightly attached to two planes of the valve plate 13; when the valve is in a fully closed state, the pressure of the shale gas at the inlet end is greater than that of the shale gas at the outlet end, the shale gas pushes the valve plate 13 to the outlet end to enable the valve seat 10 to form sealing, and meanwhile, the valve seat 10 is pressed towards the valve plate 13 under the action of a high-pressure medium to realize inlet end sealing.
Claims (3)
1. A wellhead plate valve, comprising: the valve body (1), the upside of valve body (1) has upper valve cover (2) through the mounting screw, valve cover (3) under through installing is passed through to the downside of valve body (1), the upside of upper valve cover (2) is through installing connecting valve (4), pneumatic cylinder (5) are installed to the upside of connecting valve (4), the lower extreme of pneumatic cylinder (5) is connected with valve rod (6) of passing upper valve cover (2), install packing (7) and packing pressure cap (8) between valve rod (6) and upper valve cover (2), the lower extreme of lower valve cover (3) is connected with safety cover (9), valve seat (10) are installed to the middle-end of valve body (1), install wave spring (11) between valve seat (10) and valve body (1), install baffle (12) on valve seat (10), install valve plate (13) in baffle (12), the upper end and the valve rod (6) erection joint of valve plate (13), the lower extreme of valve plate (13) is connected with tail-stock (14) that stretch into safety cover (9), install packing (7) and packing pressure cap (8) between tail-stock (14) and lower valve gap (3).
2. A wellhead plate valve according to claim 1, characterized in that the upper valve cover (2) and the lower valve cover (3) are respectively provided with grease injection structures (15).
3. A wellhead plate valve according to claim 1 characterized in that said valve seat (10) and valve plate (13) are coated with a hard metal coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020711603.3U CN212079260U (en) | 2020-05-05 | 2020-05-05 | Well head flat valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020711603.3U CN212079260U (en) | 2020-05-05 | 2020-05-05 | Well head flat valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212079260U true CN212079260U (en) | 2020-12-04 |
Family
ID=73593130
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020711603.3U Active CN212079260U (en) | 2020-05-05 | 2020-05-05 | Well head flat valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212079260U (en) |
-
2020
- 2020-05-05 CN CN202020711603.3U patent/CN212079260U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201265392Y (en) | High-pressure anti-corrosion downhole safety valve for oil gas well | |
| CN105221407A (en) | A kind of hydraulic end of plunger pump assembly | |
| CN202391375U (en) | Self-pressurizing self-lubricating offset-regulating sealing device for polish rod | |
| CN212079260U (en) | Well head flat valve | |
| CN206246712U (en) | A kind of floating seal high-pressure manifold plug valve | |
| CN201412539Y (en) | High-pressure large-diameter fracturing gate valve | |
| CN200989177Y (en) | Polishing rod sealing device | |
| CN201241850Y (en) | Self-force water pump control valve | |
| CN201416407Y (en) | Energy-saving multistage sealed stuffing box | |
| CN200952379Y (en) | High pressure pollution removal throttle pipe collection | |
| CN1056436C (en) | Multiple-range oil-well pump | |
| CN2841949Y (en) | Reverse differential pressure anchor packer | |
| CN209195327U (en) | A kind of hydraulic polish rod seal device of trailing type | |
| CN2530117Y (en) | Gas compressor governor | |
| CN201401148Y (en) | Expanding type capsule sealing anti-spray box | |
| CN201425103Y (en) | Heavy hammer type hydraulic rotary-cutting slurry valve device | |
| CN2083667U (en) | Slide type slowly closing check valve | |
| CN201568003U (en) | Ultra-high pressure fracturing and acidizing oil-extracting wellhead device | |
| CN2864087Y (en) | Underwell anti-injection oil discharger | |
| CN2379669Y (en) | Quick-action, taper shaped, sealing and silencing check valve | |
| CN204459232U (en) | High-temperature wearable two-way hard seal purges slurry oil shear valve | |
| CN201916170U (en) | Oil well pump | |
| CN216642072U (en) | Gas-proof oil-well pump | |
| CN202746158U (en) | Ring seal air protection deviated well oil-well pump | |
| CN201896737U (en) | Water sucking and draining device used for high stroke frequency hydraulic driving slurry pump |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Yancheng jiajiarong Petrochemical Equipment Co.,Ltd. Assignor: JIANGSU XIONGYUE PETROLEUM MECHANICAL EQUIPMENT MANUFACTURING Co.,Ltd. Contract record no.: X2023980051314 Denomination of utility model: A type of wellhead flat valve Granted publication date: 20201204 License type: Common License Record date: 20231211 |