CN213016276U - Quick plugging device of well head - Google Patents
Quick plugging device of well head Download PDFInfo
- Publication number
- CN213016276U CN213016276U CN202021651613.9U CN202021651613U CN213016276U CN 213016276 U CN213016276 U CN 213016276U CN 202021651613 U CN202021651613 U CN 202021651613U CN 213016276 U CN213016276 U CN 213016276U
- Authority
- CN
- China
- Prior art keywords
- well head
- piston
- baffle
- valve rod
- cylinder
- 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.)
- Expired - Fee Related
Links
- 238000007789 sealing Methods 0.000 claims description 7
- 230000000903 blocking effect Effects 0.000 abstract description 5
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000000605 extraction Methods 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 5
- 239000010720 hydraulic oil Substances 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The utility model provides a quick plugging device of well head. Relates to the technical field of oil extraction in oil fields. A valve rod of the blowout preventer is transversely and fixedly connected with a baffle; a support is fixedly connected to the shell of the blowout preventer, a cylinder body is connected to the support through a connecting cylinder, a piston is arranged in a cylinder barrel of the cylinder body, a counter bore is formed in the lower portion of the piston and is in clearance fit connection with a supporting rod, a spring is arranged between the upper portion of a blocking ring of the supporting rod and the bottom of the piston, the lower portion of the blocking ring is provided with a contact head which is abutted to the upper portion of a baffle, and a through hole is formed in the top. The utility model discloses following beneficial effect has: through adding the torsion of a rotatory direction of closing on the valve rod of preventer, eliminate the sealed not hard up influence that drive mechanism's clearance brought, because the spring force of compressed keeps in the baffle top always, when the rubber elasticity of valve plate reduces, when producing the space between two valve plates, the elasticity of spring can be further rotatory to closing well head one side with the valve rod to keep the well head to keep sealed state always.
Description
The technical field is as follows:
the utility model belongs to the technical field of the oil field technique of recovering oil and specifically relates to quick plugging device of well head.
Background art:
the blowout preventer is mounted on the casing head of the well head when drilling oil, the blowout preventer is used for controlling the blowout device of high pressure oil, gas and water, when the pressure of the oil gas in the well is very high, the blowout preventer can close the well head, prevent the blowout from happening, the blowout preventer usually closes the channel of the well head by closing two opposite valve plates of both sides each other, compress each other through the rubber and achieve the sealed purpose between two valve plates, through turning the hand wheel of both sides, drive the flashboard to close or open, thus close or open the well head, achieve the goal of closing the well, opening the well;
two valve plates of preventer are under the drive of valve rod, and the rubber slab of two valve plate front ends is compressed, thereby leans on tightly to close well head passageway, and under the condition of high pressure, temperature variation, pressure fluctuation in the well head, the elasticity of rubber can reduce to produce the possibility of revealing, lean on once to close preventer, can not keep the sealing performance of well head for a long time.
The utility model has the following contents:
in order to solve the problem, the utility model provides a quick plugging device of well head.
The technical scheme of the utility model is that: the wellhead rapid plugging device comprises a wellhead and a blowout preventer, wherein a valve rod of the blowout preventer is transversely and fixedly connected with a baffle;
a support is fixedly connected to the shell of the blowout preventer, a cylinder body is connected to the support through a bolt, a piston is arranged in a cylinder barrel of the cylinder body and is connected with the cylinder barrel in a clearance fit mode through a sealing ring, a counter bore is formed in the lower portion of the piston and is connected with a support rod in a clearance fit mode, a blocking ring is arranged on the lower portion of the support rod, a spring is arranged between the upper portion of the blocking ring and the bottom of the piston, the lower portion of the blocking ring is provided with a contact which is abutted to the upper portion of.
The baffle is arranged on one side of the valve rod in the direction of rotating to close the blowout preventer.
The bottom of the contact is semi-spherical.
The utility model discloses following beneficial effect has: through adding the torsion of a rotatory direction of closing on the valve rod of preventer, eliminate the sealed not hard up influence that drive mechanism's clearance brought, because the spring force of compressed keeps in the baffle top always, when the rubber elasticity of valve plate reduces, when producing the space between two valve plates, the elasticity of spring can be further rotatory to closing well head one side with the valve rod to keep the well head to keep sealed state always.
Description of the drawings:
fig. 1 is a schematic structural diagram of the present invention;
fig. 2 is a cross-sectional view a-a of fig. 1.
In the figure, 1-wellhead, 2-blowout preventer, 3-valve rod, 4-cylinder, 5-one-way valve, 6-support, 7-cylinder, 8-piston, 9-strut, 10-baffle, 11-spring, 12-baffle ring and 13-contact.
The specific implementation mode is as follows:
the present invention will be further explained with reference to the accompanying drawings:
as shown in fig. 1 and fig. 2, the wellhead quick plugging device comprises a wellhead 1 and a blowout preventer 2, wherein a baffle plate 10 is transversely and fixedly connected to a valve rod 3 of the blowout preventer 2;
a support 6 is fixedly connected to the shell of the blowout preventer 2, a cylinder body 4 is connected to the support 6 through bolts, a piston 8 is arranged in a cylinder barrel 7 of the cylinder body 4 and is connected with the cylinder barrel 7 in a clearance fit mode through a sealing ring, a counter bore is formed in the lower portion of the piston 8 and is connected with a support rod 9 in a clearance fit mode, a baffle ring 12 is arranged on the lower portion of the support rod 9, a spring 11 is arranged between the upper portion of the baffle ring 12 and the bottom of the piston 8, the lower portion of the baffle ring 12 is arranged, a contact 13 is arranged on the bottom of the support rod 9 and is abutted.
The baffle 10 is arranged at one side of the rotating direction of the valve rod 3 for closing the blowout preventer, and the baffle 10 is arranged at one side of the rotating direction of the valve rod 3.
The bottom of the contact 13 is in a semi-spherical shape, and the semi-spherical groove contact can be completely contacted with the baffle within a certain angle to transfer pressure.
When the blowout preventer is actually used, when a wellhead needs to be closed, a hand wheel and a valve rod 3 are rotated to compress rubber plates at the front ends of two valve plates to generate sealing, the rubber plates are tightly abutted to close a wellhead channel, then a cylinder body 4 is connected to a support 6 through a bolt, hydraulic oil is injected into a cylinder barrel 7, the hydraulic oil cannot be decompressed under the action of a one-way valve 5, a piston 8 descends under hydraulic pressure, the piston 8 presses a spring 11, a baffle ring 12 and a contact 13 to descend, so that the valve rod 3 further rotates in a closing direction, the influence of seal looseness caused by a gap of a transmission mechanism is eliminated by adding a torque force in the rotating closing direction to the valve rod 3 of the blowout preventer, at the moment, pressure is further injected into the cylinder barrel 7, the spring 11 is in a compression state, the elastic force of the compressed spring 11 is always kept above a baffle plate 10, when the rubber elasticity of the valve plates is reduced, when a, the elastic force of the spring can further rotate the valve rod to the side closing the wellhead, thereby keeping the wellhead in a sealing state all the time.
Claims (3)
1. The utility model provides a quick plugging device of well head, includes well head (1) and preventer (2), its characterized in that: a valve rod (3) of the blowout preventer (2) is transversely and fixedly connected with a baffle plate (10);
support (6) of fixed connection on the shell of preventer (2), pass through bolted connection cylinder body (4) on support (6), it is connected through sealing washer clearance fit to be equipped with piston (8) in cylinder (7) of cylinder body (4) and cylinder (7), there is the counter bore piston (8) lower part, the counter bore is connected with branch (9) clearance fit, branch (9) lower part is equipped with keeps off ring (12), it is equipped with spring (11) to keep off between ring (12) upper portion and piston (8) bottom, keep off ring (12) lower part, branch (9) bottom is equipped with contact (13) and is inconsistent with baffle (10) upper portion, there is through-hole sealing connection check valve (5) at the top of cylinder (7).
2. A wellhead rapid plugging device according to claim 1 wherein: the baffle (10) is arranged on one side of the valve rod (3) in the direction of rotating to close the blowout preventer.
3. A wellhead rapid plugging device according to claim 1 wherein: the bottom of the contact (13) is in a semi-spherical shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021651613.9U CN213016276U (en) | 2020-08-10 | 2020-08-10 | Quick plugging device of well head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021651613.9U CN213016276U (en) | 2020-08-10 | 2020-08-10 | Quick plugging device of well head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213016276U true CN213016276U (en) | 2021-04-20 |
Family
ID=75465656
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021651613.9U Expired - Fee Related CN213016276U (en) | 2020-08-10 | 2020-08-10 | Quick plugging device of well head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213016276U (en) |
-
2020
- 2020-08-10 CN CN202021651613.9U patent/CN213016276U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210420 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |