CN205805488U - A kind of self sealss pumping blowout-preventing box - Google Patents
A kind of self sealss pumping blowout-preventing box Download PDFInfo
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- CN205805488U CN205805488U CN201620654580.0U CN201620654580U CN205805488U CN 205805488 U CN205805488 U CN 205805488U CN 201620654580 U CN201620654580 U CN 201620654580U CN 205805488 U CN205805488 U CN 205805488U
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- shell body
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- pumping
- primary seal
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Abstract
This utility model provides a kind of self sealss pumping blowout-preventing box, including guiding assemblage, the lower end of described guiding assemblage connects upper pressing cap, this upper pressing cap lower end connected with outer casing body, being provided with secondary seal, primary seal part in described shell body from top to bottom, between described secondary seal, primary seal part, space forms a return passage, is provided with through hole in the middle part of described shell body, this through hole communicates with return passage, and on the outer wall of described shell body, the position at through hole is fixed with Valve joint.This utility model simple in construction, easy for installation, it is not necessary to external impetus；When swabbing operation, when only in well, liquid is pumped into well head, sealing strip just can produce pressure and make pumping steel wire rope and wellhead sealing, thus prevents because of steel wire rope friction damage sealing strip；It is provided with wiper block, it is therefore prevented that steel wire rope produces eccentric wear to sealing strip, adds the service life of sealing strip.
Description
Technical field
This utility model belongs to oil gas field pumping discharge opeing technical field, is specifically related to a kind of self sealss pumping blowout-preventing box.
Background technology
Pumping discharge opeing is the important step of low pressure oil gas well formation testing gas work, due to the particularity in pumping steel wire rope cross section,
Wellhead sealing always restricts the outstanding problem of normal pumping.In order to solve this problem, have now been developed multiple blowout prevention box, work
Being essentially all compression seal packing element axially or radially as principle and reach sealing effectiveness, compression packing element power source has gas, liquid
Liquid in force feed and well.But all have some limitations, it is impossible to reach preferable effect.Therefore, the dirt in pumping process
Dye problem is not the most well solved, so that being unable to reach the requirement of safe and clean production.
Utility model content
The purpose of this utility model is to overcome the problem of environmental pollution in prior art, decreases the friction of steel wire rope simultaneously
Damage, effectively increase the service life of cartridge.
To this end, this utility model provides a kind of self sealss pumping blowout-preventing box, including guiding assemblage, described guiding assemblage
Lower end connects upper pressing cap, this upper pressing cap lower end connected with outer casing body, is provided with secondary seal, one-level in described shell body from top to bottom
Sealing member, between described secondary seal, primary seal part, space forms a return passage, is provided with logical in the middle part of described shell body
Hole, this through hole communicates with return passage, and on the outer wall of described shell body, the position at through hole is fixed with Valve joint.
Described guiding assemblage includes directive wheel and bearing, and described directive wheel is arranged on bearing, between bearing and upper pressing cap
Connected by bearing.
Described primary seal part includes inner housing, cone seal bar, cylindrical seal bar and piston, and described inner housing is for setting
Metallic cylinder in shell body, this inner housing upper surface has the circular hole passed through for steel wire rope, and lower end is provided with piston seat, lives
Obturating plug is provided with piston；
Described inner housing inner chamber top half is tapered, which is provided with cone seal bar, and the latter half is circular, and it sets
Having cylindrical seal bar, described secondary seal is identical with primary seal part structure, described secondary seal and primary seal part
It is provided with seal groove on the outer wall of inner housing.
Described primary seal part lower end is provided with wiper block.
Described upper pressing cap lower end is connected by screw thread and shell body, and described shell body lower end is necking down shape, in necking segment
It is provided with tubing round thread.
The beneficial effects of the utility model are:
(1) simple in construction, easy for installation, it is not necessary to external impetus；
(2) good sealing effect, arranges return passage between two-stage sealing member, on the one hand will sting the liquid spilt in well
It is collected, on the other hand makes higher level's sealing strip not bearing capacity；
(3) when swabbing operation, when only in well, liquid is pumped into well head, sealing strip just can produce pressure and make pumping steel wire
Rope and wellhead sealing, thus prevent because of steel wire rope friction damage sealing strip；
(4) it is provided with wiper block, it is therefore prevented that steel wire rope produces eccentric wear to sealing strip, adds the service life of sealing strip.
It is described in further details below in conjunction with accompanying drawing.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
In figure: 1, guiding assemblage；2, upper pressing cap；3, shell body；4, secondary seal；5, return passage；6, Valve joint；7、
Primary seal part；8, wiper block；9, inner housing；10, cone seal bar；11, cylindrical seal bar；12, piston；13, piston seat.
Detailed description of the invention
Embodiment 1:
Present embodiments provide a kind of self sealss pumping blowout-preventing box, including guiding assemblage 1, the lower end of described guiding assemblage 1
Connect upper pressing cap 2, this upper pressing cap 2 lower end connected with outer casing body 3, in described shell body 3, be provided with secondary seal 4, from top to bottom
Level sealing member 7, between described secondary seal 4, primary seal part 7, space forms a return passage 5, in the middle part of described shell body 3
Being provided with through hole, this through hole communicates with return passage 5, and the outer wall of described shell body 3 is fixed with Valve joint 6 in the position of through hole.
The work process of pumping self sealss blowout prevention box described briefly below:
When swabbing operation, the present embodiment blowout prevention box is arranged on well head or safe pull-off device, when liquid pumping in well
Time, primary seal part 7 and secondary seal 4 realize the sealing to steel wire rope；When liquid leaks into backflow through primary seal part 7
During room 5, by pipeline by the liquid guide flow that leaks out to ground liquids recycling can；Return passage 5 is connected with liquid recovery tank
And communicate with atmospheric pressure, return passage 5 is passive state, it is ensured that secondary seal 4 in the case of being not subject to fluid pressure by steel
The fluid being stained with in cord daubs into return passage 5, flows back in tank, makes secondary seal 4 reach the effect do not revealed.
The present embodiment self sealss pumping blowout-preventing box good sealing effect, arranges return passage 5, on the one hand between two-stage sealing member
It is collected stinging the liquid spilt in well, on the other hand makes higher level's sealing strip not bearing capacity.
Embodiment 2:
On the basis of embodiment 1, present embodiments provide a kind of self sealss pumping blowout-preventing box as shown in Figure 1, described
Guiding assemblage 1 includes that directive wheel and bearing, described directive wheel are arranged on bearing, between bearing and upper pressing cap 2 by bearing even
Connect.Guiding assemblage 1 can be realized arbitrarily rotate.
Described primary seal part 7 includes inner housing 9, cone seal bar 10, cylindrical seal bar 11 and piston 12, described interior
Housing 9 is the metallic cylinder being located in shell body 3, and this inner housing 9 upper surface has the circular hole passed through for steel wire rope, and lower end is arranged
Piston seat 13, piston seat 13 is had to be provided with piston 12；
Described inner housing 9 inner chamber top half is tapered, which is provided with cone seal bar 10, and the latter half is circular, its
Being provided with cylindrical seal bar 11, described secondary seal 4 is identical with primary seal part 7 structure, described secondary seal 4 and
It is provided with seal groove on the outer wall of level sealing member 7 inner housing 9.Seal groove is for sealing the sky between inner housing 9 and shell body 3
Gap.
The pumping work process of self sealss blowout prevention box, refering to Fig. 1.
When swabbing operation, blowout prevention box is arranged on well head or safe pull-off device, when in well, liquid is pumped into well head
Time piston 12 is produced pressure, piston 12 moves up compression seal bar, and inner shell inner chamber top half is tapered, with cone seal
Bar 10 coordinates, and the latter half is circular, coordinates with cylindrical seal bar 11, it is achieved the sealing to steel wire rope；When liquid is through one
Level sealing member 7 is when leaking into return passage 5, by pipeline by the liquid guide flow that leaks out to ground liquids recycling can；Backflow
Room 5 is connected with liquid recovery tank and communicates with atmospheric pressure, and return passage 5 is passive state, it is ensured that secondary seal 4 is being not subject to liquid
In the case of body pressure, the fluid being stained with on steel wire rope is daubed into return passage 5, flow back in tank, make secondary seal 4 reach not and let out
The effect of dew.
In the present embodiment, primary seal part 7 lower end is provided with wiper block 8.Steel wire rope is played the work of righting by wiper block 8
With, it is therefore prevented that steel wire rope produces eccentric wear to sealing strip.
Upper pressing cap 2 lower end is connected by screw thread and shell body 3, and shell body 3 lower end is necking down shape, is provided with in necking segment
Tubing round thread.Tubing round thread is for connecting with well head or safe pull-off device.
This utility model simple in construction, easy for installation, it is not necessary to external impetus；When swabbing operation, only in well, liquid is taken out
When drawing well head, sealing strip just can produce pressure and make pumping steel wire rope and wellhead sealing, thus prevents because of steel wire rope friction damage
Sealing strip；It is provided with wiper block 8, it is therefore prevented that steel wire rope produces eccentric wear to sealing strip, adds the service life of sealing strip.
Parts that the present embodiment describes the most in detail and structure belong to the well-known components of the industry and common structure or conventional hands
Section, describes the most one by one.
Exemplified as above is only to illustration of the present utility model, is not intended that protection domain of the present utility model
Limit, within the every and same or analogous design of this utility model belongs to protection scope of the present invention.
Claims (5)
1. a self sealss pumping blowout-preventing box, it is characterised in that: including guiding assemblage (1), the lower end of described guiding assemblage (1) is even
Connecting pressure cap (2), this upper pressing cap (2) lower end connected with outer casing body (3), described shell body is provided with secondary seal in (3) from top to bottom
Part (4), primary seal part (7), between described secondary seal (4), primary seal part (7), space forms a return passage (5),
Described shell body (3) middle part is provided with through hole, and this through hole communicates with return passage (5), at through hole on the outer wall of described shell body (3)
Position is fixed with Valve joint (6).
A kind of self sealss pumping blowout-preventing box the most according to claim 1, it is characterised in that: described guiding assemblage (1) includes
Directive wheel and bearing, described directive wheel is arranged on bearing, is connected by bearing between bearing and upper pressing cap (2).
A kind of self sealss pumping blowout-preventing box the most according to claim 1, it is characterised in that: described primary seal part (7) is wrapped
Including inner housing (9), cone seal bar (10), cylindrical seal bar (11) and piston (12), described inner housing (9) is for being located at shell
Metallic cylinder in body (3), this inner housing (9) upper surface has the circular hole passed through for steel wire rope, and lower end is provided with piston seat
(13), piston seat (13) is taken and is provided with piston (12)；
Described inner housing (9) inner chamber top half is tapered, which is provided with cone seal bar (10), and the latter half is circular, its
Being provided with cylindrical seal bar (11), described secondary seal (4) is identical with primary seal part (7) structure, described secondary seal
It is provided with seal groove on the outer wall of part (4) and primary seal part (7) inner housing (9).
4. according to a kind of self sealss pumping blowout-preventing box described in any one of claim 1-3, it is characterised in that: described primary seal
Part (7) lower end is provided with wiper block (8).
5. according to a kind of self sealss pumping blowout-preventing box described in any one of claim 1-3, it is characterised in that: described upper pressing cap
(2) lower end is connected by screw thread and shell body (3), and described shell body (3) lower end is necking down shape, is provided with oil pipe in necking segment
Screw thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620654580.0U CN205805488U (en) | 2016-06-28 | 2016-06-28 | A kind of self sealss pumping blowout-preventing box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620654580.0U CN205805488U (en) | 2016-06-28 | 2016-06-28 | A kind of self sealss pumping blowout-preventing box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205805488U true CN205805488U (en) | 2016-12-14 |
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ID=57505883
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620654580.0U Active CN205805488U (en) | 2016-06-28 | 2016-06-28 | A kind of self sealss pumping blowout-preventing box |
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| CN (1) | CN205805488U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108798585A (en) * | 2017-05-05 | 2018-11-13 | 中国石油天然气股份有限公司 | Swabbing blowout preventer |
-
2016
- 2016-06-28 CN CN201620654580.0U patent/CN205805488U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108798585A (en) * | 2017-05-05 | 2018-11-13 | 中国石油天然气股份有限公司 | Swabbing blowout preventer |
| CN108798585B (en) * | 2017-05-05 | 2020-07-10 | 中国石油天然气股份有限公司 | Swabbing blowout preventer |
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| GR01 | Patent grant |