CN207620761U - A kind of combined type preventer - Google Patents

A kind of combined type preventer Download PDF

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Publication number
CN207620761U
CN207620761U CN201820394852.7U CN201820394852U CN207620761U CN 207620761 U CN207620761 U CN 207620761U CN 201820394852 U CN201820394852 U CN 201820394852U CN 207620761 U CN207620761 U CN 207620761U
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CN
China
Prior art keywords
cavity
hydraulic cylinder
shell
locking
combined type
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CN201820394852.7U
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Chinese (zh)
Inventor
王海江
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Zhejiang Shenwei Petroleum Machinery Co Ltd
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Zhejiang Shenwei Petroleum Machinery Co Ltd
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Priority to CN201820394852.7U priority Critical patent/CN207620761U/en
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Abstract

The utility model discloses a kind of combined type preventer, including shell and the side door assembly for being arranged symmetrically in shell both sides, inner cavity is offered in shell, the output end of each side door assembly stretches into the lower part of inner cavity and is installed with flashboard, two flashboards cooperate is divided into two independent cavitys by inner cavity, the top of inner cavity is equipped with flexible sealing element, is fixed on the roof of inner cavity at the top of sealing element, and the bottom end of sealing element and the side walls of inner cavity connect.The utility model is dual blowout prevention structure, number that is safe and reliable, improving reuse.

Description

A kind of combined type preventer
Technical field
The utility model is related to preventers, and in particular to a kind of combined type preventer.
Background technology
Preventer is most important well control device, is played an important roll during drilling well especially under balance pressure drilling.If The purpose for counting preventer, is that wellbore is closed in the case where there is pressure, and continuous control is kept to well, entering the ground in well Layer fluid, which recycles, to be come.Ram preventer is a kind of common preventer, and the course of work is to utilize hydraulic drive piston, is driven Flashboard closes or opens, and to close or open well head, achievees the purpose that shut-in well, drives a well.But in the prior art, well is blocked The sealing element of mouth is fragile, and reuse number is relatively low, simultaneously because its flimsy characteristic, once staff does not carry out Maintenance and timely replacement, the sealing element of damage can not just play the role of well blowout preventing, in the actual production process, safe and reliable Property is relatively low.
Utility model content
In order to solve the above-mentioned technical problem the utility model provides a kind of combined type preventer, dual blowout prevention structure, safety Reliably, the number of reuse is improved.
The technical solution that the utility model solves above-mentioned technical problem is as follows:A kind of combined type preventer, including shell and It is arranged symmetrically in the side door assembly of the shell both sides, inner cavity is offered in the shell, the output of each side door assembly End stretches into the lower part of the inner cavity and is installed with flashboard, and the inner cavity is divided by two flashboard mutual cooperations The top of two independent cavitys, the inner cavity is equipped with flexible sealing element, and institute is fixed at the top of the sealing element It states on the roof of inner cavity, the bottom end of the sealing element is connect with the side walls of the inner cavity.
The utility model has the beneficial effects that:Dual blowout prevention structure, number that is safe and reliable, improving reuse.
Based on the above technical solution, the utility model can also do following improvement.
Further, at least two sliding rails are fixed on the side wall of the inner cavity, are mounted on each sliding rail and institute State the sliding block of sliding rail being slidably connected, the sliding block is fixedly connected with the bottom of the sealing element, be equipped on the shell to The piston rod of few two driving cylinders for driving sliding block to slide, each driving cylinder passes through connection with the corresponding sliding block Rope connection.
Advantageous effect using above-mentioned further scheme is coordinated by sliding-rail sliding, enables the bottom of sealing element to top Portion is close, to be folded, make its middle part inwardly it is close, can locking preventer center drilling tool, prevent blowout.
Further, it is equipped with fixed pulley between the top and the top of the sealing element of each sliding rail, it is described to determine cunning Wheel is rotatably mounted to the interior intracavitary, and one end of the connecting rope is connect with the sliding block, the other end of the connecting rope It is connect with the piston rod of the driving cylinder around fixed pulley.
Advantageous effect using above-mentioned further scheme is will to be turned to by fixed pulley, reduces the volume of preventer, structure It is compacter.
Further, in the middle part of the sealing element recess is equipped with along the direction far from the intracavity sidewall.
Advantageous effect using above-mentioned further scheme is when sealing element basal sliding, and middle part can be along separate after being squeezed The direction of inside cavities wall is moved, simple in structure.
Further, the side door assembly includes side door ontology, hydraulic cylinder and the locking for locking the hydraulic cylinder extension Device offers chamber in the side door ontology, and the hydraulic cylinder and the locking device are installed in the chamber, described The side door ontology of each side connection one of lower part of the housing, the piston rod of the hydraulic cylinder are connected with the flashboard, One end far from piston rod is equipped with connecting shaft on the piston of the hydraulic cylinder, and the one end of the connecting shaft is solid with the hydraulic cylinder piston The other end of fixed connection, the connecting shaft stretches out the cylinder body of the hydraulic cylinder and in the locking device.
Advantageous effect using above-mentioned further scheme is simple in structure.
It is further, opposing upper and lower on the connecting shaft is located in the locking device one section to open up there are two groove, The locking device include the dual Piston arranged vertically it is double go out hydraulic cylinder, two with the locking head of the fit depressions and two A connecting rod, the cylinder body that the dual Piston pair goes out hydraulic cylinder are fixed in the side door ontology, and the dual Piston pair goes out liquid Two piston rods of cylinder pressure respectively connect one end of a connecting rod, are respectively hinged in the middle part of two connecting rods described The other end of the top and bottom of side door ontology madial wall, the connecting rod is respectively fixedly connected with a locking head.
Advantageous effect using above-mentioned further scheme is the implementation of locking and releases fast and easy, reduces and be produced into Originally, easy to use.
Further, it is R's to have on the locking head using the hinge joint of the connecting shaft and the shell as the center of circle, radius Arc surface A, the groove is interior to have arc surface B identical with the arc surface A shapes.
Advantageous effect using above-mentioned further scheme is when releasing locking, to reduce the friction of locking head and groove, more Add it is laborsaving, reduce it is double to dual Piston go out hydraulic cylinder demand, reduce cost.
Further, the length of the radius R is less than the hinge joint of the connecting rod and the shell away from the dual Piston It is double go out hydraulic cylinder at a distance from the connecting rod junction.
Advantageous effect using above-mentioned further scheme is by lever principle, and more laborsaving, reduction is double to dual Piston Go out the hydraulic pressure demand of hydraulic cylinder so that the releasing of locking device is more laborsaving.
Further, upper flange plate is installed, the bottom of the shell is equipped with lower flange, described at the top of the shell The upper flange plate and the lower flange are respectively communicated at the top and bottom of inner cavity
Advantageous effect using above-mentioned further scheme is simple in structure, can quickly and easily be installed to well head.
Description of the drawings
FIG. 1 is a schematic structural view of the utility model.
In attached drawing, parts list represented by the reference numerals are as follows:
1, shell, 2, side door assembly, 3, inner cavity, 4, sealing element, 5, sliding rail, 6, connecting rope, 7, driving cylinder, 8, side door sheet Body, 9, fixed pulley, 10, connecting shaft, 11, chamber, 12, flashboard, 13, connecting rod, 14, locking head, 15, dual Piston it is double go out hydraulic pressure Cylinder, 16, hydraulic cylinder.
Specific implementation mode
The principles of the present invention and feature are described below in conjunction with attached drawing, example is served only for explaining this practicality It is novel, it is not intended to limit the scope of the utility model.
As shown in Figure 1, a kind of combined type preventer, including shell 1 and the side door assembly 2 for being arranged symmetrically in 1 both sides of shell, Inner cavity 3 is offered in shell 1, the output end of each side door assembly 2 stretches into the lower part of inner cavity 3 and is installed with flashboard 12, two flashboards 12 cooperate is divided into two independent cavitys by inner cavity 3, and the top of inner cavity 3 is equipped with flexible The top of sealing element 4, sealing element 4 is fixed on the roof of inner cavity 3, and the bottom end of sealing element 4 is connect with the side walls of inner cavity 3.
It is fixed at least two sliding rails 5 on the side wall of inner cavity 3, is mounted on each sliding rail 5 and is slidably connected with sliding rail 5 Sliding block, sliding block is fixedly connected with the bottom of sealing element 4, and at least two drives for driving sliding block to slide are equipped on shell 1 Dynamic cylinder 7, the piston rod of each driving cylinder 7 are connected with corresponding sliding block by connecting rope 6.The top of each sliding rail 5 and sealing element 4 Top between be equipped with fixed pulley 9, fixed pulley 9 is rotatably mounted in inner cavity 3, and one end of connecting rope 6 is connect with sliding block, The other end of connecting rope 6 connect around fixed pulley 9 with the piston rod of driving cylinder 7.4 middle part of sealing element is along far from 3 side wall of inner cavity Direction is equipped with recess.The top of shell 1 is equipped with upper flange plate, and the bottom of shell 1 is equipped with lower flange, the top of inner cavity 3 It is respectively communicated with upper flange plate and lower flange with bottom.
Side door assembly 2 includes side door ontology 8, hydraulic cylinder 16 and the locking device to stretch for locked hydraulic cylinder 16, side door Chamber 11 is offered in ontology 8, hydraulic cylinder 16 and locking device are installed in chamber 11, and 1 lower part of shell is each side A side door ontology 8 is connected, the piston rod of hydraulic cylinder 16 is connected with flashboard 12, far from piston rod on the piston of hydraulic cylinder 16 One end is equipped with connecting shaft 10, and 10 one end of connecting shaft is fixedly connected with 16 piston of hydraulic cylinder, and the other end of connecting shaft 10 stretches out hydraulic pressure The cylinder body of cylinder 16 is simultaneously located in locking device.Connecting shaft 10 be located in locking device one section it is upper it is opposing upper and lower open up there are two Groove, locking device include the dual Piston arranged vertically it is double go out hydraulic cylinder 15, two and fit depressions locking head 14 and Two connecting rods 13, the cylinder body that dual Piston pair goes out hydraulic cylinder 15 are fixed in side door ontology 8, and dual Piston pair goes out hydraulic cylinder 15 Two piston rods respectively connection one connecting rod 13 one end, the middle part of two connecting rods 13 is respectively hinged in side door ontology 8 The other end of the top and bottom of side wall, connecting rod 13 is respectively fixedly connected with a locking head 14.Have to connect on locking head 14 The hinge joint of spindle 10 and shell 1 is the center of circle, the arc surface A that radius is R, has circle identical with arc surface A shapes in groove Cambered surface B.
Preferably, sealing element 4 is rubber material.
Preventer is installed to by well head by lower flange when use, passes through upper flange plate and petroleum pipeline or drilling rig Connection starts hydraulic cylinder 16 after well pressure is more than certain value, and 16 piston rod of hydraulic cylinder drives flashboard 12 to be moved to the center of cavity Dynamic, two flashboards 12 in two side door assemblies 2 close up, and the drilling tool in 12 center of flashboard are compressed, by 12 top of flashboard in cavity Keep apart with lower space, the high pressure oil in well is blocked in the region of 12 lower part of flashboard by flashboard 12, prevents blowout.Subsequent start-up Locking device starts dual Piston pair and goes out hydraulic cylinder 15, two piston is driven to be located remotely from each other, displacement up and down respectively, Corresponding connecting rod 13 is driven to rotate, connecting rod 13 drives locking head 14 to rotate, and arc surface A is relatively rotated along arc surface B, The surface of middle arc surface A and the surface of arc surface B are smooth surface, and frictional force is small, and locking head 14 is enable quickly to leave groove, It is laborsaving time saving.In addition, start driving cylinder 7 simultaneously, connecting rope 6 is pulled, to make sliding block rise, the bottom of sealing element 4 is to top Close, middle part is then extruded inward, and the drilling tool crush seal with the installation of preventer center further prevents blowout.It seals simultaneously The deformation of part 4 is small, is hardly damaged, and can repeatedly use.It with 12 well blowout preventing of combined floodgate plate, can use often, improve anti- The safety of blowout and reliability.
The above is only the preferred embodiment of the present invention, is not intended to limit the utility model, all in this practicality Within novel spirit and principle, any modification, equivalent replacement, improvement and so on should be included in the guarantor of the utility model Within the scope of shield.

Claims (9)

1. a kind of combined type preventer, it is characterised in that:Including shell (1) and it is arranged symmetrically in the sides of the shell (1) both sides Door component (2), the shell (1) is interior to offer inner cavity (3), and the output end of each side door assembly (2) stretches into described The lower part of chamber (3) and it is installed with flashboard (12), two flashboards (12), which cooperate, is divided into the inner cavity (3) The top of two independent cavitys, the inner cavity (3) is equipped with flexible sealing element (4), the top of the sealing element (4) It is fixed on the roof of the inner cavity (3), the bottom end of the sealing element (4) is connect with the side walls of the inner cavity (3).
2. a kind of combined type preventer according to claim 1, it is characterised in that:It is fixed on the side wall of the inner cavity (3) At least two sliding rails (5) are each mounted on the sliding block being slidably connected with the sliding rail (5), the cunning on the sliding rail (5) Block is fixedly connected with the bottom of the sealing element (4), and at least two are equipped on the shell (1) for driving sliding block to slide The piston rod of driving cylinder (7), each driving cylinder (7) is connected with the corresponding sliding block by connecting rope (6).
3. a kind of combined type preventer according to claim 2, it is characterised in that:The top of each sliding rail (5) and institute It states and is equipped with fixed pulley (9) between the top of sealing element (4), the fixed pulley (9) is rotatably mounted to the inner cavity (3) Interior, one end of the connecting rope (6) is connect with the sliding block, the other end of the connecting rope (6) around fixed pulley (9) with it is described The piston rod of driving cylinder (7) connects.
4. a kind of combined type preventer according to claim 3, it is characterised in that:Along far from institute in the middle part of the sealing element (4) The direction for stating inner cavity (3) side wall is equipped with recess.
5. a kind of combined type preventer according to claim 1, it is characterised in that:The side door assembly (2) includes side door sheet Body (8), hydraulic cylinder (16) and the locking device flexible for locking the hydraulic cylinder (16), the side door ontology (8) is interior to be opened up There are chamber (11), the hydraulic cylinder (16) and the locking device to be installed in the chamber (11), shell (1) lower part The side door ontology (8) of each side connection one, the piston rod of the hydraulic cylinder (16) is connected with the flashboard (12) Connect, on the piston of the hydraulic cylinder (16) far from piston rod one end be equipped with connecting shaft (10), described connecting shaft (10) one end with Hydraulic cylinder (16) piston is fixedly connected, and the other end of the connecting shaft (10) stretches out cylinder body and the position of the hydraulic cylinder (16) In in the locking device.
6. a kind of combined type preventer according to claim 5, it is characterised in that:The connecting shaft (10) is located at the locking Opposing upper and lower on one section in device to open up there are two groove, the locking device includes that the dual Piston pair arranged vertically goes out Hydraulic cylinder (15), two locking heads (14) and two connecting rods (13) with the fit depressions, the dual Piston pair go out The cylinder body of hydraulic cylinder (15) is fixed in the side door ontology (8), and the dual Piston pair goes out two pistons of hydraulic cylinder (15) Bar respectively connects one end of a connecting rod (13), and the side door sheet is respectively hinged in the middle part of two connecting rods (13) The other end of the top and bottom of body (8) madial wall, the connecting rod (13) is respectively fixedly connected with a locking head (14).
7. a kind of combined type preventer according to claim 6, it is characterised in that:Have with described on the locking head (14) The hinge joint of connecting shaft (10) and the shell (1) is the center of circle, the arc surface A that radius is R, is had in the groove and the circle The identical arc surface B of cambered surface A shapes.
8. a kind of combined type preventer according to claim 7, it is characterised in that:The length of the radius R is less than the company Extension bar (13) goes out hydraulic cylinder (15) away from the dual Piston pair with the hinge joint of the shell (1) and is connect with the connecting rod (13) The distance at place.
9. according to a kind of any one of claim 1 to 8 combined type preventer, it is characterised in that:The top of the shell (1) Upper flange plate is installed, the bottom of the shell (1) is equipped with lower flange, and the top and bottom of the inner cavity (3) connect respectively Lead to the upper flange plate and the lower flange.
CN201820394852.7U 2018-03-22 2018-03-22 A kind of combined type preventer Active CN207620761U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201820394852.7U CN207620761U (en) 2018-03-22 2018-03-22 A kind of combined type preventer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201820394852.7U CN207620761U (en) 2018-03-22 2018-03-22 A kind of combined type preventer

Publications (1)

Publication Number Publication Date
CN207620761U true CN207620761U (en) 2018-07-17

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201820394852.7U Active CN207620761U (en) 2018-03-22 2018-03-22 A kind of combined type preventer

Country Status (1)

Country Link
CN (1) CN207620761U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110374541A (en) * 2019-07-23 2019-10-25 建湖县帅牛机械有限公司 A kind of preventer of dual-seal design

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110374541A (en) * 2019-07-23 2019-10-25 建湖县帅牛机械有限公司 A kind of preventer of dual-seal design

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