CN214886961U - Wellhead plugging pressure relief device - Google Patents
Wellhead plugging pressure relief device Download PDFInfo
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- CN214886961U CN214886961U CN202121579900.8U CN202121579900U CN214886961U CN 214886961 U CN214886961 U CN 214886961U CN 202121579900 U CN202121579900 U CN 202121579900U CN 214886961 U CN214886961 U CN 214886961U
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- pressure relief
- relief device
- sleeved
- upper cover
- valve seat
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Abstract
The utility model discloses a well head shutoff pressure relief device belongs to well head shutoff pressure relief technical field. A wellhead plugging pressure relief device comprises an upper cover and a handle, wherein a pressure relief tee is sleeved at the end of the upper cover, one side of the pressure relief tee is connected with a pressure relief valve, a pressure relief device body is sleeved at the bottom end of the pressure relief tee, a central pipe is sleeved in the pressure relief device body, and a sealing assembly is sleeved in the central pipe; be connected with the pivot on the handle, be connected with the ejector pin in the pivot, the pivot pass the upper cover and with upper cover threaded connection, the lower extreme and the sealing component contact of ejector pin to change sealing component's encapsulated situation, the utility model discloses a pressure relief device installs in hanging a central section of thick bamboo, makes the ejector pin that the handle lower extreme is connected push down balanced valve rod, and release internal pressure makes the pressure relief device inside unanimous with well internal pressure, goes down the ejector pin once more, presses away the single valve cone body, and internal pressure can release fast, opens the relief valve, unloads internal pressure.
Description
Technical Field
The utility model relates to a well head shutoff pressure release technical field, more specifically say, relate to a well head shutoff pressure relief device.
Background
At present, a large number of oil and gas wells which are low in yield and cannot be produced temporarily exist in oil and gas fields at home and abroad, the oil and gas wells need to be plugged temporarily, and internal pressure and pressure relief can be detected at any time. Considering that domestic oil fields all carry out water injection operation to the producing zone, abandonment oil well is after stratum pressure risees, and pressure in the well can progressively improve, causes plugging device to bear certain pressure, still need consider simultaneously subsequent production, consequently still need consider to realize the pressure release function under sealed reliable prerequisite, in view of this, we provide a well head shutoff pressure relief device.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a well head shutoff pressure relief device to solve the problem that proposes in the above-mentioned background art: after the formation pressure of the waste oil well rises, the pressure in the well can be gradually increased, so that the plugging device can bear certain pressure.
In order to achieve the above object, the utility model provides a following technical scheme:
a wellhead plugging pressure relief device comprises an upper cover and a handle, wherein a pressure relief tee is sleeved at the end of the upper cover, a pressure relief valve is connected to one side of the pressure relief tee, a pressure relief device body is sleeved at the bottom end of the pressure relief tee, a central pipe is sleeved in the pressure relief device body, and a sealing assembly is sleeved in the central pipe;
the handle is connected with a rotating shaft, the rotating shaft is connected with an ejector rod, the rotating shaft penetrates through the upper cover and is in threaded connection with the upper cover, and the lower end of the ejector rod is in contact with the sealing assembly to change the sealing state of the sealing assembly.
Preferably, the sealing assembly comprises a one-way valve seat sleeved in the central tube, a steel ball is arranged on the bottom surface of the one-way valve seat, a spring sleeve is arranged on the lower side of the steel ball, a spring is arranged on the spring sleeve, and the end part of the spring is fixed in the central tube.
Preferably, the inner wall of the lower end of the central tube is provided with a boss, a spring seat is arranged on the boss, and the spring is fixed on the spring seat.
Preferably, a valve seat annular groove is formed in the outer wall of the lower end of the one-way valve seat, a valve seat sealing ring is arranged in the valve seat annular groove, and the valve seat sealing ring is connected with the central pipe in a sealing mode.
Preferably, the ejector rod penetrates through the pressure relief tee joint to be in contact with the steel ball.
Preferably, a pressure gauge is installed between the pressure relief tee joint and the pressure relief valve.
Preferably, a body annular groove is formed in the inner wall of the lower end of the pressure relief device body, a body sealing ring is arranged in the body annular groove, and the body sealing ring is connected with the central pipe in a sealing mode.
Preferably, an O-ring is arranged between the rotating shaft and the upper cover.
Compared with the prior art, the beneficial effects of the utility model reside in that:
the utility model discloses special pressure relief device installs in hanging a central section of thick bamboo, when needs carry out the pressure release operation, twist grip, the ejector pin that makes the handle lower extreme connect pushes down the steel ball, release internal pressure, make pressure relief device inside unanimous with the well internal pressure, it is down with the ejector pin once more, press the steel ball open, internal pressure can let out fast, open the relief valve, unload internal pressure, and through the spring and the extrusion of spring housing to the steel ball when not needing the pressure release, make steel ball and one-way valve seat in close contact with, guarantee the device's leakproofness, consequently the device can also effectively realize the effect of release under sealed reliable prerequisite.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of the internal structure of the suspension center tube of the present invention;
FIG. 3 is a schematic view of the connection between the upper cover and the handle of the present invention
The reference numbers in the figures illustrate: 1. an upper cover; 2. a handle; 3. a pressure relief device body; 4. a one-way valve seat; 5. a steel ball; 6. a spring housing; 7. a spring seat; 8. a central tube; 9. a pressure gauge; 10. a spring; 11. a body sealing ring; 12. a valve seat sealing ring; 13. a pressure relief valve; 14. a pressure relief tee joint; 15. a top rod; 16. positioning a gland; 17. a rotating shaft; 18. and an O-shaped ring.
Detailed Description
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.
In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "provided", "sleeved/connected", "connected", and the like are to be understood in a broad sense, such as "connected", which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example 1:
referring to fig. 1-3, a wellhead plugging pressure relief device comprises an upper cover 1 and a handle 2, wherein a pressure relief tee 14 is sleeved at the end of the upper cover 1, one side of the pressure relief tee 14 is connected with a pressure relief valve 13, the pressure relief valve 13 can be automatically opened and closed according to the working pressure of a system to protect the safety of a system pipeline, a pressure relief device body 3 is sleeved at the bottom end of the pressure relief tee 14, a central pipe 8 is sleeved in the pressure relief device body 3, a sealing assembly is sleeved in the central pipe 8, and the sealing assembly is used for sealing a well when pressure relief is not needed;
the handle 2 is connected with a rotating shaft 17, the rotating shaft 17 is connected with a push rod 15, the rotating shaft 17 penetrates through the upper cover 1 and is in threaded connection with the upper cover 1, and the lower end of the push rod 15 is in contact with the sealing assembly so as to change the sealing state of the sealing assembly.
The sealing assembly comprises a one-way valve seat 4 sleeved in a central pipe 8, a steel ball 5 is arranged on the bottom surface of the one-way valve seat 4, a spring sleeve 6 is arranged on the lower side of the steel ball 5, a spring 10 is arranged on the spring sleeve 6, the end part of the spring 10 is fixed in the central pipe 8, and the steel ball 5 and the one-way valve seat 4 are extruded to be in close contact under the action of the spring 10, so that a sealed state is kept in the well when pressure relief is not needed.
The inner wall of the lower end of the central tube 8 is provided with a boss, a spring seat 7 is arranged on the boss, and a spring 10 is fixed on the spring seat 7.
The outer wall of the lower end of the one-way valve seat 4 is provided with a valve seat annular groove, a valve seat sealing ring 12 is arranged in the valve seat annular groove, the valve seat sealing ring 12 is connected with the central pipe 8 in a sealing mode, and the connection sealing performance of the one-way valve seat 4 and the central pipe 8 is improved through the valve seat sealing ring 12.
The ejector rod 15 penetrates through the pressure relief tee joint 14 to be in contact with the steel ball 5, and the steel ball 5 can be pushed by the ejector rod 15.
A pressure gauge 9 is arranged between the pressure relief tee joint 14 and the pressure relief valve 13, and the pressure change in the well can be observed through the pressure gauge 9.
Body annular groove has been seted up to 3 lower extreme inner walls of pressure relief device body, is provided with body sealing washer 11 in the body annular groove, and body sealing washer 11 and center tube 8 sealing connection increase the leakproofness between pressure relief device body 3 and the center tube 8 through body sealing washer 11.
An O-shaped ring 18 is arranged between the rotating shaft 17 and the upper cover 1.
The utility model discloses special pressure relief device installs in hanging a central section of thick bamboo 8, when needs carry out the pressure release operation, twist grip 2, the ejector pin 15 that makes 2 lower extremes of handle connect pushes down steel ball 5, release internal pressure, make the pressure relief device inside unanimous with the pressure in the well, go down ejector pin 15 once more, press steel ball 5 open, internal pressure can let out fast, open relief valve 13, unload internal pressure, and when not needing the pressure release, through spring 10 and the 6 squeezing action to steel ball 5 of spring housing, make steel ball 5 and 4 in close contact with of one-way valve seat, guarantee the device's leakproofness.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the description in the above embodiments and the description is only preferred examples of the present invention, and is not intended to limit the present invention, and that the present invention can have various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications all fall into the scope of the claimed invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (8)
1. The utility model provides a well head shutoff pressure relief device which characterized in that: the pressure relief device comprises an upper cover (1) and a handle (2), wherein a pressure relief tee joint (14) is sleeved at the end part of the upper cover (1), a pressure relief valve (13) is connected to one side of the pressure relief tee joint (14), a pressure relief device body (3) is sleeved at the bottom end of the pressure relief tee joint (14), a central pipe (8) is sleeved in the pressure relief device body (3), and a sealing assembly is sleeved in the central pipe (8);
the handle (2) is connected with a rotating shaft (17), the rotating shaft (17) is connected with a push rod (15), the rotating shaft (17) penetrates through the upper cover (1) and is in threaded connection with the upper cover (1), and the lower end of the push rod (15) is in contact with the sealing assembly to change the sealing state of the sealing assembly.
2. A wellhead plugging pressure relief device according to claim 1, wherein: the sealing assembly comprises a one-way valve seat (4) sleeved in a central pipe (8), a steel ball (5) is arranged on the bottom surface of the one-way valve seat (4), a spring sleeve (6) is arranged on the lower side of the steel ball (5), a spring (10) is arranged on the spring sleeve (6), and the end part of the spring (10) is fixed in the central pipe (8).
3. A wellhead plugging pressure relief device according to claim 2, wherein: the inner wall of the lower end of the central pipe (8) is provided with a boss, a spring seat (7) is arranged on the boss, and the spring (10) is fixed on the spring seat (7).
4. A wellhead plugging pressure relief device according to claim 2, wherein: the outer wall of the lower end of the one-way valve seat (4) is provided with a valve seat annular groove, a valve seat sealing ring (12) is arranged in the valve seat annular groove, and the valve seat sealing ring (12) is connected with the central pipe (8) in a sealing mode.
5. A wellhead plugging pressure relief device according to claim 2, wherein: the ejector rod (15) penetrates through the pressure relief tee joint (14) to be in contact with the steel ball (5).
6. A wellhead plugging pressure relief device according to claim 1, wherein: and a pressure gauge (9) is arranged between the pressure relief tee joint (14) and the pressure relief valve (13).
7. A wellhead plugging pressure relief device according to claim 1, wherein: the inner wall of the lower end of the pressure relief device body (3) is provided with a body annular groove, a body sealing ring (11) is arranged in the body annular groove, and the body sealing ring (11) is in sealing connection with the central pipe (8).
8. A wellhead plugging pressure relief device according to claim 1, wherein: an O-shaped ring (18) is arranged between the rotating shaft (17) and the upper cover (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121579900.8U CN214886961U (en) | 2021-07-12 | 2021-07-12 | Wellhead plugging pressure relief device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121579900.8U CN214886961U (en) | 2021-07-12 | 2021-07-12 | Wellhead plugging pressure relief device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214886961U true CN214886961U (en) | 2021-11-26 |
Family
ID=78928161
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121579900.8U Active CN214886961U (en) | 2021-07-12 | 2021-07-12 | Wellhead plugging pressure relief device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214886961U (en) |
-
2021
- 2021-07-12 CN CN202121579900.8U patent/CN214886961U/en active Active
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