CN210888868U

CN210888868U - Blowout preventer convenient to maintain

Info

Publication number: CN210888868U
Application number: CN201920651550.8U
Authority: CN
Inventors: 杨庆兆; 王旭; 陶银明
Original assignee: Jianhu Jielin Petrochemical Machinery Co ltd
Current assignee: Jianhu Jielin Petrochemical Machinery Co ltd
Priority date: 2019-05-08
Filing date: 2019-05-08
Publication date: 2020-06-30
Anticipated expiration: 2029-05-08

Abstract

The utility model discloses a preventer convenient to maintain, including fixed well seat and connecting pipe, be provided with oil pipe on the fixed well seat, and the oil pipe upper end embolias the installation intraductally, be provided with the sealing washer between installation pipe and the oil pipe, and the lateral wall of installation pipe and oil pipe all is provided with fixed ear, the connecting pipe is connected with installation pipe upper end, and is provided with pressure relief device in the connecting pipe, the pressure relief device upper end is connected with defeated oil pipe, annular sump oil tank sets up at preventer body upper surface, and preventer body lower extreme and connecting pipe are linked together, all be provided with the pneumatic cylinder on the left and right sides wall of preventer body, and the inboard of pneumatic cylinder is provided with the flashboard. This preventer convenient to maintain, preventer are connected with connecting pipe and installation pipe, and the installation pipe box utilizes bolt and oil pipe fixed connection on oil pipe, avoids threaded connection between former installation pipe and the oil pipe, and the wearing and tearing of junction are accelerated in often dismantling, and the maintenance of the preventer of being not convenient for influences the effect of preventer.

Description

Blowout preventer convenient to maintain

Technical Field

The utility model relates to a preventer technical field specifically is a preventer convenient to maintain.

Background

The blowout preventer is used for closing a wellhead in the operation processes of oil testing, well workover, well completion and the like and preventing blowout accidents from happening.

Common preventer oil pipe junction leakproofness is poor, and leakproofness greatly reduced after long-time the use takes place the oil leak phenomenon easily, causes oil extravagant, and general preventer and well head oil pipe junction are threaded connection, often dismantles the preventer from well head oil pipe for preventer and well head oil pipe junction wearing and tearing, the maintenance of the preventer of being not convenient for, long-time life reduces.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a preventer convenient to maintain to the common preventer oil pipe junction leakproofness that proposes in solving above-mentioned background art is poor, and leakproofness greatly reduced takes place the oil leak phenomenon easily after long-time the use, causes oil extravagant, and general preventer is not convenient for maintain, the problem of long-time life reduction.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a preventer convenient to maintain, includes fixed well seat and connecting pipe, be provided with oil pipe on the fixed well seat, and in the oil pipe upper end emboliaed the installation pipe, be provided with the sealing washer between installation pipe and the oil pipe, and the lateral wall of installation pipe and oil pipe all is provided with fixed ear, is connected through the bolt between 2 fixed ears simultaneously, the connecting pipe is connected with installation pipe upper end, and is provided with pressure relief device in the connecting pipe, the pressure relief device upper end is connected with defeated oil pipe, and defeated oil pipe runs through the lateral wall of connecting pipe upper surface and annular sump oil tank, annular sump oil tank sets up at preventer body upper surface, and preventer body lower extreme and connecting pipe are linked together, all be provided with the pneumatic cylinder on the wall of the left and right sides of preventer body.

Preferably, the number of the fixing lugs is four, and 2 fixing lugs correspond to 1 bolt.

Preferably, the inner side wall of the installation pipe and the outer side surface of the sealing ring are both in a conical shape.

Preferably, pressure relief device is including advancing oil pipe, a spring, telescopic link, sliding block and sealed the pad, and advance oil pipe setting in pressure relief device, advance oil pipe simultaneously and link up with the connecting pipe mutually, advance oil pipe upper end and defeated oil pipe and link up mutually, and defeated oil pipe runs through sealed the pad, sealed the setting of pad is on pressure relief device's top simultaneously, be provided with the spring on the wall of pressure relief device right side, and the spring inboard is provided with telescopic link, the left end of spring and telescopic link's left end all is connected with the sliding block, and the sliding block sets up in advancing oil pipe.

Preferably, pressure relief device and defeated oil pipe present the one-to-one correspondence, and defeated oil pipe is provided with two.

Preferably, telescopic machanism is constituteed to pneumatic cylinder and flashboard, and pneumatic cylinder and flashboard all are provided with two.

Compared with the prior art, the beneficial effects of the utility model are that: the blowout preventer is convenient to maintain and comprises a blowout preventer body,

(1) the blowout preventer is connected with the connecting pipe and the mounting pipe, the mounting pipe is sleeved on the oil pipe and fixedly connected with the oil pipe through the bolt, and compared with the original mode that the mounting pipe and the oil pipe are connected through threads, the blowout preventer can avoid frequent disassembly and accelerated abrasion of the joint, so that the maintenance of the blowout preventer is inconvenient and the effect of the blowout preventer is influenced;

(2) compared with the prior art that the threaded connection between the installation pipe and the oil pipe has poor sealing effect, the installation pipe is internally tapered, so that the installation pipe and the oil pipe are conveniently connected, and meanwhile, a sealing ring is arranged between the installation pipe and the oil pipe, so that the sealing property between the installation pipe and the oil pipe is ensured;

(3) the pressure relief device is arranged, when the pressure in the oil well reaches the critical point of the blowout preventer, the sliding block is pushed to move under the action of the pressure, oil enters the annular oil collecting tank through the oil conveying pipe, the pressure in the blowout preventer is buffered, the phenomenon that the blowout preventer is damaged for a long time due to the fact that the pressure in the blowout preventer is too high is avoided, and the using effect is reduced.

Drawings

Fig. 1 is a schematic view of the front cross-sectional structure of the present invention;

FIG. 2 is a schematic left side view of the present invention;

FIG. 3 is a schematic structural view of the pressure relief device of the present invention when the pressure is not relieved;

fig. 4 is the schematic structural view of the pressure relief device of the present invention during pressure relief.

In the figure: 1. the oil pipe comprises a fixed well seat, 2, an oil pipe, 3, a fixed lug, 4, an installation pipe, 5, a sealing ring, 6, a bolt, 7, a connecting pipe, 8, a pressure relief device, 801, an oil inlet pipe, 802, a spring, 803, a telescopic connecting rod, 804, a sliding block, 805, a sealing gasket, 9, an oil conveying pipe, 10, an annular oil collecting tank, 11, a blowout preventer body, 12, a hydraulic cylinder, 13 and a flashboard.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a technical solution: the utility model provides a preventer convenient to maintain, as shown in fig. 1 and 2, be provided with oil pipe 2 on the fixed well seat 1, and in oil pipe 2 upper end emboliaed installation pipe 4, be provided with sealing washer 5 between installation pipe 4 and the oil pipe 2, and the lateral wall of installation pipe 4 and oil pipe 2 all is provided with fixed ear 3, be connected through bolt 6 between 2 fixed ears 3 simultaneously, fixed ear 3 is provided with four, and 2 fixed ears 3 are corresponding with 1 bolt 6, be convenient for oil pipe 2 and installation pipe 4's connection, the lateral surface of installation pipe 4 inside wall and sealing washer 5 is the toper form, sealing washer 5 guarantees the leakproofness of installation pipe 4 and oil pipe 2 junction.

As shown in fig. 1, 2, 3 and 4, the connecting pipe 7 is connected with the upper end of the mounting pipe 4, the connecting pipe 7 is internally provided with the pressure relief device 8, the pressure relief device 8 comprises an oil inlet pipe 801, a spring 802, a telescopic connecting rod 803, a sliding block 804 and a sealing gasket 805, the oil inlet pipe 801 is arranged in the pressure relief device 8, the oil inlet pipe 801 is communicated with the connecting pipe 7, the upper end of the oil inlet pipe 801 is communicated with the oil delivery pipe 9, the oil delivery pipe 9 penetrates the sealing gasket 805, the sealing gasket 805 is arranged at the top end of the pressure relief device 8, the right side wall of the pressure relief device 8 is provided with the spring 802, the inner side of the spring 802 is provided with the telescopic connecting rod 803, the left end of the spring 802 and the left end of the telescopic connecting rod 803 are both connected with the sliding block 804, the sliding block 804 is arranged in the oil inlet pipe 801, when the oil pressure in the blowout preventer is too high, the sliding block, the annular oil collecting tank 10 is annular and is through in the middle, the pressure relief device 8 and the oil delivery pipe 9 are in one-to-one correspondence, the number of the oil delivery pipes 9 is two, the pressure relief device 8 can reduce the internal pressure of the blowout preventer and avoid overlarge internal pressure of the blowout preventer and influence on the service life of the blowout preventer for a long time, the upper end of the pressure relief device 8 is connected with the oil delivery pipe 9, the oil delivery pipe 9 penetrates through the upper surface of the connecting pipe 7 and the outer side wall of the annular oil collecting tank 10, the annular oil collecting tank 10 is arranged on the upper surface of the blowout preventer body 11, the lower end of the blowout preventer body 11 is communicated with the connecting pipe 7, hydraulic cylinders 12 are arranged on the left side wall and the right side wall of the blowout preventer body 11, the inner sides of the hydraulic cylinders 12 are provided with flashboards 13, the hydraulic cylinders 12 and, and sealing the wellhead.

The working principle is as follows: when the blowout preventer convenient for maintenance is used, the installation pipe 4 is sleeved on the oil pipe 2, then the bolt 6 penetrates through the fixing lug 3 on the installation pipe 4 and the oil pipe 2, the installation pipe 4 is fixedly connected with the oil pipe 2, the sealing ring 5 is arranged between the installation pipe 4 and the oil pipe 2, the sealing ring 5 ensures the sealing performance of the joint of the installation pipe 4 and the oil pipe 2, when a wellhead needs to be closed, the hydraulic cylinder 12 is used for pushing the

flashboards

13, 2 flashboards 13 are connected together under the action of the hydraulic cylinder 12 to close the wellhead, when the pressure in a well is overhigh, oil passes through the oil inlet pipe 801, the sliding block 804 is pushed to the right under the action of oil pressure, the sliding block 804 extrudes the spring 802, the telescopic connecting rod 803 avoids the extrusion deformation of the spring 802, the oil flows into the annular oil collecting tank 10 through the oil pipeline 9 and plays a role of slowing down the oil pressure in the oil well, the spring 802 pushes the sliding block 804 to block the connection between the oil pipe 9 and the oil inlet pipe 801, and the details not described in detail in this specification are well known in the art.

The terms "central," "longitudinal," "lateral," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for ease of description, but are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the scope of the invention.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.

Claims

1. A blowout preventer for facilitating maintenance, comprising a fixed well base (1) and a connecting pipe (7), characterized in that: an oil pipe (2) is arranged on the fixed well seat (1), the upper end of the oil pipe (2) is sleeved into the installation pipe (4), a sealing ring (5) is arranged between the installation pipe (4) and the oil pipe (2), the outer side walls of the installation pipe (4) and the oil pipe (2) are respectively provided with a fixing lug (3), the 2 fixing lugs (3) are connected through a bolt (6), the connecting pipe (7) is connected with the upper end of the installation pipe (4), a pressure relief device (8) is arranged in the connecting pipe (7), the upper end of the pressure relief device (8) is connected with an oil conveying pipe (9), the oil conveying pipe (9) penetrates through the upper surface of the connecting pipe (7) and the outer side wall of an annular oil collecting tank (10), the annular oil collecting tank (10) is arranged on the upper surface of the blowout preventer body (11), the lower end of the blowout preventer body (11) is communicated with the connecting pipe (7), hydraulic cylinders (12) are arranged on the left, and a gate plate (13) is arranged on the inner side of the hydraulic cylinder (12).

2. The blowout preventer of claim 1, wherein: the number of the fixing lugs (3) is four, and the number of the fixing lugs (3) is 2 and the number of the bolts (6) is 1.

3. The blowout preventer of claim 1, wherein: the inner side wall of the mounting pipe (4) and the outer side surface of the sealing ring (5) are both in a conical shape.

4. The blowout preventer of claim 1, wherein: pressure relief device (8) are including advancing oil pipe (801), spring (802), telescopic connecting rod (803), sliding block (804) and sealed pad (805), and advance oil pipe (801) and set up in pressure relief device (8), advance oil pipe (801) simultaneously and link up with connecting pipe (7) mutually, advance oil pipe (801) upper end and defeated oil pipe (9) and link up mutually, and defeated oil pipe (9) run through sealed pad (805), sealed pad (805) sets up the top at pressure relief device (8) simultaneously, be provided with spring (802) on pressure relief device (8) right side wall, and spring (802) inboard is provided with telescopic connecting rod (803), the left end of spring (802) and the left end of telescopic connecting rod (803) all are connected with sliding block (804), and sliding block (804) set up in advancing oil pipe (801).

5. The blowout preventer of claim 1, wherein: pressure relief device (8) and defeated oil pipe (9) present the one-to-one correspondence, and defeated oil pipe (9) are provided with two.

6. The blowout preventer of claim 1, wherein: the hydraulic cylinder (12) and the gate plate (13) form a telescopic mechanism, and the hydraulic cylinder (12) and the gate plate (13) are both provided with two parts.