CN203239282U - Gas recovery wellhead main passage valve device capable of being replaced under pressure - Google Patents
Gas recovery wellhead main passage valve device capable of being replaced under pressure Download PDFInfo
- Publication number
- CN203239282U CN203239282U CN 201320156797 CN201320156797U CN203239282U CN 203239282 U CN203239282 U CN 203239282U CN 201320156797 CN201320156797 CN 201320156797 CN 201320156797 U CN201320156797 U CN 201320156797U CN 203239282 U CN203239282 U CN 203239282U
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- main channel
- main passage
- seal
- hole
- replace
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Abstract
The utility model discloses a gas recovery wellhead main passage valve device capable of being replaced under pressure. The device comprises an upper flange and is characterized in that the device further comprises a ball body with a through hole and a plug, the ball body with the through hole is arranged on the main passage of the upper flange, an upper sealing piece and a lower sealing piece are respectively arranged on the upper end surface and the lower end surface of the ball body with the through hole, a spring for tightly pressing the lower sealing piece is connected below the lower sealing piece, a passage for enabling a spanner to extend in to rotate the ball body with the through hole is arranged on the side surface of the upper flange, and the passage is sealed by inserting the plug. The gas recovery wellhead main passage valve device capable of being replaced under pressure solves the problems that the valve cannot be normally sealed and potential safety hazards exist for the reason that the main passage valve is frequently damaged due to corrosion of fracture sand and acidic mediums in the prior art. The gas recovery wellhead main passage valve device provided by the utility model has the advantages that the structure is simple, the device is convenient to use, the auxiliary sealing of the main passage can be realized, the damaged valve for the main passage can be replaced under pressure and the safe use performance at a gas recovery wellhead is improved.
Description
Technical field
The utility model belongs to oil exploration equipment device field, particularly relates to a kind of replace with pressure gas production wellhead main channel valving.
Background technology
Gas wellhead equipment is to guarantee the normal visual plant of producing of gas well, comprise upper flange, valve and lower valve base, described valve is connected by upper flange with lower valve base, and gas well main channel in repeatedly pressure break and open flow in oil field is subject to the erosion of fracturing sand, acid medium, the main channel valve is often impaired, cause valve normally not seal, have potential safety hazard, also in the inconvenient situation with pressure valve is changed simultaneously, affect follow-up oil extraction operation, brought larger loss.
The utility model content
In order to solve main channel valve in the prior art because to be subject to the erosion of fracturing sand, acid medium often impaired, cause valve normally not seal, there is potential safety hazard, can not change valve simultaneously, affected follow-up oil extraction operation, brought the problem of greater loss, it is a kind of simple in structure that the utility model provides, easy to use, can realize the main channel auxiliary seal, the valve that can the replace with pressure main channel damages is with the gas production wellhead main channel valving of the safe application performance that improves gas production wellhead.
In order to address the above problem, technical solution adopted in the utility model is:
A kind of replace with pressure gas production wellhead main channel valving, comprise upper flange, it is characterized in that: also comprise band through hole spheroid and plug, be provided with band through hole spheroid in the main channel of upper flange, described band through hole spheroid upper and lower end face is respectively arranged with seal, and lower seal is connected with below lower seal for the spring that compresses lower seal, side opening at upper flange is provided be used to the passage that stretches into spanner rotating band through hole spheroid, and described passage is blocked sealing by plug.
Aforesaid a kind of replace with pressure gas production wellhead main channel valving, it is characterized in that: described upper seal and lower seal adopt nonmetal seal.
Aforesaid a kind of replace with pressure gas production wellhead main channel valving is characterized in that: described spring adopts wavy spring.
Aforesaid a kind of replace with pressure gas production wellhead main channel valving, it is characterized in that: described wavy spring thickness is 3mm.
Aforesaid a kind of replace with pressure gas production wellhead main channel valving is characterized in that: described band through hole spheroid adopts stainless steel material or low-alloy steel sprayed wc powder correct grinding to make.
The beneficial effects of the utility model are: the utility model replace with pressure gas production wellhead main channel valving, in the gas production wellhead upper flange, increased a structure that is similar to plug valve, the main latus rectum that had so both guaranteed well head is unimpeded, the valve that again can the replace with pressure main channel damages, improve the safe application performance of gas production wellhead, and can reach the purpose of safety volume increase.
Description of drawings
Fig. 1 is the utility model replace with pressure gas production wellhead main channel valve device structure schematic diagram.
The specific embodiment
The utility model will be further described below in conjunction with accompanying drawing.
As shown in Figure 1, a kind of replace with pressure gas production wellhead main channel valving, comprise upper flange 1, band through hole spheroid 3, upper seal 4, lower seal 5, wavy spring 6 and plug 7, be provided with band through hole spheroid 3 in the main channel 2 of upper flange 1, band through hole spheroid 3 adopts stainless steel material or low-alloy steel sprayed wc powder correct grinding to make.Described band through hole spheroid 3 upper and lower end faces are respectively arranged with seal 4, lower seal 5, and upper seal 4 and lower seal 5 adopt nonmetal seal.
Be connected with below lower seal 5 for the wavy spring 6 that compresses lower seal 5, described wavy spring 6 thickness are 3mm, can make the upward force that is subject to all the time 2.5KN with through hole spheroid 3, make nonmetal seal and band through hole spheroid 3 keep fitting closely.Side opening at upper flange 1 is provided be used to the passage that stretches into spanner rotating band through hole spheroid, and described passage is blocked sealing by plug 7.
When needs are closed the main channel, unload right-hand member plug 7, with turn clockwise 90 ° of band through hole spheroids of special spanner, make band through hole spheroid 3 through holes mutually vertical with main channel 2, be subject to the active force that the well head passage makes progress with through hole spheroid 3 lower ends simultaneously, make the spheroid nonmetal seal in upper end of more closely fitting, lower valve base moves under the effect of wavy spring 6 so that the nonmetal seal in lower end is adjacent to band through hole spheroid 3 spheres, thereby blocks the main channel.When opening passage, be slightly larger than well head pressure from the 3 upper ends pressurization of band through hole spheroid, make pressure enter spheroid annular space effect lower ball base, make band through hole spheroid 3 be in light state, then utilize special spanner to be rotated counterclockwise 90 ° of spheroids, band through hole spheroid 3 through holes and well head main channel 2 are connected, and the right plug 7 of screwing on guarantees that sealing is reliable.
The utility model replace with pressure gas production wellhead main channel valving, in the gas production wellhead upper flange, increased a structure that is similar to plug valve, the main latus rectum that had so both guaranteed well head is unimpeded, the valve that again can the replace with pressure main channel damages, improve the safe application performance of gas production wellhead, and can reach the purpose of safety volume increase.
More than show and described basic principle of the present utility model, principal character and advantage.The technician of the industry should understand; the utility model is not restricted to the described embodiments; that describes in above-described embodiment and the manual just illustrates principle of the present utility model; under the prerequisite that does not break away from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall in claimed the utility model scope.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (5)
1. replace with pressure gas production wellhead main channel valving, comprise upper flange, it is characterized in that: also comprise band through hole spheroid and plug, be provided with band through hole spheroid in the main channel of upper flange, described band through hole spheroid upper and lower end face is respectively arranged with seal, lower seal, below lower seal, be connected with for the spring that compresses lower seal, side opening at upper flange is provided be used to the passage that stretches into spanner rotating band through hole spheroid, and described passage is blocked sealing by valve stem seal and plug.
2. a kind of replace with pressure gas production wellhead according to claim 1 main channel valving, it is characterized in that: described upper seal and lower seal adopt nonmetal seal.
3. a kind of replace with pressure gas production wellhead according to claim 2 main channel valving, it is characterized in that: described spring adopts wavy spring.
4. a kind of replace with pressure gas production wellhead according to claim 3 main channel valving, it is characterized in that: described wavy spring thickness is 3mm.
5. a kind of replace with pressure gas production wellhead according to claim 4 main channel valving, it is characterized in that: described band through hole spheroid adopts stainless steel material or low-alloy steel sprayed wc powder correct grinding to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320156797 CN203239282U (en) | 2013-04-01 | 2013-04-01 | Gas recovery wellhead main passage valve device capable of being replaced under pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320156797 CN203239282U (en) | 2013-04-01 | 2013-04-01 | Gas recovery wellhead main passage valve device capable of being replaced under pressure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203239282U true CN203239282U (en) | 2013-10-16 |
Family
ID=49316592
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320156797 Expired - Lifetime CN203239282U (en) | 2013-04-01 | 2013-04-01 | Gas recovery wellhead main passage valve device capable of being replaced under pressure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203239282U (en) |
-
2013
- 2013-04-01 CN CN 201320156797 patent/CN203239282U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131016 |
|
| CX01 | Expiry of patent term |