CN108869866A - A kind of valve seat flashboard shearing combined mechanism and shearing safety valve - Google Patents
A kind of valve seat flashboard shearing combined mechanism and shearing safety valve Download PDFInfo
- Publication number
- CN108869866A CN108869866A CN201810770688.XA CN201810770688A CN108869866A CN 108869866 A CN108869866 A CN 108869866A CN 201810770688 A CN201810770688 A CN 201810770688A CN 108869866 A CN108869866 A CN 108869866A
- Authority
- CN
- China
- Prior art keywords
- valve seat
- flashboard
- shearing
- wirerope
- valve
- 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.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K41/00—Spindle sealings
- F16K41/02—Spindle sealings with stuffing-box ; Sealing rings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/02—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor
- F16K3/0227—Packings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/30—Details
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lift Valve (AREA)
- Details Of Valves (AREA)
Abstract
The invention discloses a kind of valve seat flashboards to shear combined mechanism, including mutually matched flashboard and valve seat, the flashboard is provided with the embedded broach shell of flashboard close to the side of the valve seat, and the valve seat is provided with and the embedded broach shell of the mutually matched valve seat of the embedded broach shell of the flashboard close to the side of the flashboard；The embedded broach shell of flashboard include and mutually matched first shearing edge of the embedded broach shell of the valve seat, close to the first shearing slip face of the valve seat, the first wirerope precautionary areas and wirerope recovery area positioned at first shearing edge far from first shearing slip face side；The embedded broach shell of valve seat includes the second shearing edge matched with first shearing edge and first shearing slip face mutually matched second shearing slip face, the second wirerope precautionary areas positioned at second shearing edge far from the flashboard side.Valve seat flashboard shearing combined mechanism of the invention quickly can carry out shearing manipulation to wirerope in a sudden situation.
Description
Technical field
The present invention relates to safety valve technical fields, and in particular to a kind of valve seat flashboard shearing combined mechanism and including the shearing
The shearing safety valve of combined mechanism.
Background technique
The production tree extremely severe applied to operating condition, under blowout state, it is desirable to be able to cut wirerope, quick closedown in time
Wellbore, to avoid safety accident occurs.And valve seat construction used in shearing safety valve in the prior art, shear effect are poor,
And substantially disposable products, after shearing operation is primary, valve seat and flashboard will fail, it is necessary to replace, not only increase personnel's
Working strength also increases cost, it is also possible to safety accident can occur.
Summary of the invention
In view of this, in order to overcome the defects of the prior art described above, an object of the present invention is to provide one kind can be fast
The valve seat flashboard of speed shearing wirerope shears combined mechanism, and the shearing combined mechanism can be realized multiple shearing manipulation, use the longevity
Life length.
In order to achieve the above object, the present invention uses following technical scheme：
A kind of valve seat flashboard shearing combined mechanism, including mutually matched flashboard and valve seat, the flashboard is close to the valve seat
Side is provided with the embedded broach shell of flashboard, and the valve seat is provided with and the embedded broach shell of the flashboard close to the side of the flashboard
The mutually matched embedded broach shell of valve seat；The embedded broach shell of flashboard includes mutually matched with the embedded broach shell of the valve seat
First shearing edge is cut close to the first shearing slip face of the valve seat, positioned at first shearing edge far from described first
Cut the first wirerope precautionary areas and wirerope recovery area of sliding surface side；The embedded broach shell of valve seat includes and described first shears
The second shearing edge that cutting edge matches, with first shearing slip face mutually matched second shearing slip face, be located at institute
State second wirerope precautionary areas of second shearing edge far from the flashboard side.By the way that the mutually matched embedded knife of flashboard is arranged
Set and the embedded broach shell of valve seat, can quickly cut off wirerope.
Preferably, the valve seat includes front end valve seat and rear end valve seat, the embedded knife of valve seat be set on it is described before
On end valve seat, the rear end valve seat is provided with insertion set close to the side of the flashboard.When in use, front end valve seat is located at rear end
The lower section of valve seat, wirerope cut the position that mouth leans on front end valve seat.Insertion set is with the embedded broach shell of flashboard far from the preceding end valve
The side of seat matches, and the function that insertion set is not sheared only cooperates with flashboard and seals.
It is further preferred that the internal orifice dimension of rear end valve seat 0.25-0.5 wirerope wider than the internal orifice dimension of the front end valve seat
Diameter.The internal orifice dimension of rear end valve seat is wider than the internal orifice dimension of front end valve seat, so that wirerope is embedding by the embedded broach shell of flashboard and valve seat
Flashboard can be detached from time for the wirerope of upper end by entering in the case that the cooperation of formula broach shell is cut, to close valve in time.
Preferably, the surface roughness in first shearing slip face and the second shearing slip face is 0.1-0.2.It is lower
Surface roughness enables to the first shearing slip face and the second shearing slip face preferably to cooperate, and shears quicker.
Preferably, it tells the first shearing edge and the second shearing edge is mutually matched right angle incision.Right angle incision
Setting can more rapidly cut wirerope.
Preferably, it is 30- that first wirerope, which pre-tightens area and the second wirerope preload area and the angle of the valve seat center line,
60 °, i.e. the top of the first shearing edge is higher than the bottom that the first wirerope pre-tightens area, and similarly, the top of the second shearing edge is higher than
The bottom in the second wirerope preload area.So on the one hand setting can cut off more rapidly wirerope, on the other hand can make sheared edge
The wirerope of top can be detached from flashboard in time.When valve is horizontally arranged, valve seat center line is horizontal direction, at this time first
It is 30-60 ° that wirerope, which pre-tightens area and the second wirerope preload area and the angle of horizontal plane,；After valve installation, valve seat center line is perpendicular
Histogram is to it is 30-60 ° that the first wirerope, which pre-tightens area and the second wirerope preload area and the angle of vertical plane, at this time.In some embodiments
In, which is preferably 45 °.
Preferably, the wirerope recovery area is slope, and the vertical range between the highs and lows on the slope is
The diameter of 0.5-1 wirerope.There is the wirerope recovery area of certain slope by being arranged, wirerope is enabled to be detached from flashboard in time.
It is further preferred that the angle of the wirerope recovery area and the valve seat center line is 5-15 °.It is horizontal positioned in valve
When, valve seat center line is horizontal direction, and the angle of wirerope recovery area and horizontal plane is 5-15 ° at this time；After valve installation,
Valve seat center line is vertical direction, and the angle of wirerope recovery area and vertical plane is 5-15 ° at this time.In some embodiments, the folder
Angle is preferably 10 °.
The present invention also provides a kind of shearing safety valve, including valve body, valve seat, flashboard, valve deck and valve rod and as above
The valve seat flashboard shears combined mechanism, and the valve deck is equipped with bar seal assembly and gland, and the valve rod can be around certainly
Body is axially rotatably arranged in the valve deck, and the lower end of the valve rod is threadedly coupled with the flashboard, the valve deck with it is described
It is provided with lumen sealing ring between valve body, is provided with sealing element between the valve seat and the valve body.Wherein, the sealing element packet
Include the outer ring sealing ring and inner ring sealing ring that the valve seat is set on the valve body side.It is set in shearing safety valve
It is equipped with valve seat flashboard shearing combined mechanism as described above, so that valve can cut off rapidly wirerope in an emergency situation, in time
Valve is closed, and is able to carry out multiple rupturing operation, long service life.
Compared to the prior art, using technical solution as above the invention has the beneficial effects that：Valve seat of the invention
Flashboard shearing combined mechanism has the following advantages that：
1. valve seat flashboard shearing combined mechanism of the invention quickly can carry out shearing manipulation to wirerope in a sudden situation, especially
The case where being less than 13mm it is suitable for wirerope diameter；
2. valve seat flashboard shearing combined mechanism of the invention can repeatedly carry out shearing manipulation, utmostly extend valve seat and lock
The service life of plate.
Detailed description of the invention
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing.
Fig. 1 is the cross-sectional view of the shearing safety valve of the preferred embodiment of the present invention；
Fig. 2 is that the valve seat flashboard of the preferred embodiment of the present invention shears the schematic diagram of combined mechanism；
Fig. 3 is that the valve seat flashboard of the preferred embodiment of the present invention shears the embedded broach shell of flashboard and valve seat insertion broach shell in combined mechanism
Mutually matched schematic diagram；
In attached drawing：Valve body -1, flashboard -2, flashboard embedded broach shell -21, the first shearing slip face -22, the first shearing edge -23,
First wirerope pre-tightens area -24, wirerope recovery area -25, outer ring sealing element -3, inner ring sealing element -4, front end valve seat -5, valve seat insertion
Broach shell -51, the second wirerope pre-tightens area -52, the second shearing slip face -53, the second shearing edge -54, back seal protrusion -6, lumen
Sealing ring -7, valve deck -8, valve rod -9, bar seal assembly -10, gland -11, rear end valve seat -12, insertion set -121, nut -
13, stud -14.
Specific embodiment
In order that those skilled in the art will better understand the technical solution of the present invention, implement below in conjunction with the present invention
Attached drawing in example, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment
Only a part of the embodiments of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, this field is common
Technical staff's every other embodiment obtained without making creative work, all should belong to protection of the present invention
Range.
It should be noted that description and claims of this specification and term " first " in above-mentioned attached drawing, "
Two " etc. be to be used to distinguish similar objects, without being used to describe a particular order or precedence order.It should be understood that using in this way
Data be interchangeable under appropriate circumstances, so as to the embodiment of the present invention described herein can in addition to illustrating herein or
Sequence other than those of description is implemented.In addition, term " includes " and " having " and their any deformation, it is intended that cover
Covering non-exclusive includes to be not necessarily limited to for example, containing the process, method of a series of steps or units, device, product or equipment
Step or unit those of is clearly listed, but may include be not clearly listed or for these process, methods, product
Or other step or units that equipment is intrinsic.
Please refer to Fig. 1-3, a kind of shearing safety valve of the present embodiment, including valve body 1, valve seat, flashboard 2, valve deck 8 and valve
Bar 9 and the valve seat flashboard being arranged between valve seat and flashboard 2 shear combined mechanism, and valve deck 8 is equipped with 10 He of bar seal assembly
Gland 11, valve rod 9 can be axially rotatably arranged in valve deck 8 around itself, and the lower end of valve rod 9 is threadedly coupled with flashboard 2, valve
Bar 9 is additionally provided with back seal protrusion 6 close to one end of flashboard 2, and lumen sealing ring 7, valve seat are provided between valve deck 8 and valve body 1
Sealing element is provided between valve body 1, the sealing element in the present embodiment includes the outer ring that valve seat is arranged on 1 side of valve body
Valve deck 8 is fixedly mounted on valve body 1 by sealing ring 3 and inner ring sealing ring 4 by nut 13 and stud 14.In shearing safety
Following valve seat flashboard shearing combined mechanism is provided in valve, so that valve can cut off rapidly wirerope in an emergency situation, and
When close valve, and be able to carry out multiple rupturing operation, long service life.
The valve seat flashboard of the present embodiment shears combined mechanism, including flashboard of the flashboard 2 on the side of valve seat is arranged in
Embedded broach shell 21 and valve seat is set close to the embedding with the mutually matched valve seat of the embedded broach shell 21 of flashboard of the side of flashboard 2
Enter formula broach shell 51.By the way that the embedded broach shell 21 of mutually matched flashboard and the embedded broach shell 51 of valve seat is arranged, can quickly cut off
Wirerope closes valve in time, avoids that safety accident occurs.
As Figure 2-3, the embedded broach shell 21 of flashboard includes shearing with the embedded broach shell 51 mutually matched first of valve seat
Cutting edge 23, close to valve seat side the first shearing slip face 22, be located at the first shearing edge 23 far from the first shearing slip face 22
The the first wirerope precautionary areas 24 and wirerope recovery area 25 of side.
As Figure 2-3, the embedded broach shell 51 of valve seat includes the second shearing edge matched with the first shearing edge 23
54, with 22 mutually matched second shearing slip face 53 of the first shearing slip face, positioned at the second shearing edge 54 far from flashboard 2 one
Second wirerope precautionary areas 52 of side.
As shown in Figs. 1-2, the valve seat in the present embodiment includes front end valve seat 5 and rear end valve seat 12, when in use, preceding end valve
Seat 5 is located at the lower section of rear end valve seat 12, and wirerope is cut mouth and is located at by the position of front end valve seat 5.The embedded broach shell 51 of valve seat is set
It sets on front end valve seat 5, rear end valve seat 12 is provided with insertion set 121 close to the side of flashboard 2, and insertion set 121 is embedded in flashboard
Formula broach shell 21 is matched far from the side of front end valve seat 5, and the function that insertion set 121 is not sheared only cooperates with flashboard 2 and seals.
The embedded broach shell 21 of flashboard, the embedded broach shell 51 of valve seat and insertion set 121 in the present embodiment by hot cover process or squeeze work
Skill is separately fixed on flashboard 2, front end valve seat 5 and rear end valve seat 12.
In order to which guarantee can in the case that wirerope is cut by the embedded broach shell 21 of flashboard and valve seat embedded broach shell 51 cooperation
The wirerope of upper end is detached from flashboard 2 in time, to close valve in time, the internal orifice dimension of rear end valve seat 12 is greater than the interior of front end valve seat 5
Aperture is wide, the internal orifice dimension of the rear end valve seat 12 in the present embodiment 0.25-0.5 wirerope wider than the internal orifice dimension of front end valve seat 5 it is straight
Diameter.
In order to more quickly shut off wirerope, the first shearing slip face 22 and the second shearing slip face in the present embodiment
53 surface roughness is 0.1-0.2, and the first shearing edge 23 and the second shearing edge 54 are mutually matched right angle incision.
Lower surface roughness enables to the first shearing slip face 22 and the second shearing slip face 53 preferably to cooperate, and shearing is more
Quickly；The setting of right angle incision equally can more rapidly cut wirerope.
As Figure 2-3, it is 30- that the first wirerope, which pre-tightens area 24 and the second wirerope preload area 52 and the angle of valve seat center line,
60 °, the angle is preferably 45 ° in the present embodiment.It is slope surface that first wirerope, which pre-tightens area 24 and the second wirerope and pre-tightens area 52, i.e., first
The top of shearing edge 23 is higher than the bottom that the first wirerope pre-tightens area 24, and similarly, the top of the second shearing edge 54 is higher than second
The bottom in wirerope preload area 52.So on the one hand setting can cut off more rapidly wirerope, on the other hand can make in sheared edge
The wirerope of side can be detached from flashboard 2 in time.When valve is horizontally arranged, valve seat center line is horizontal direction, at this time first
It is 45 ° that wirerope, which pre-tightens area 24 and the second wirerope preload area 52 and the angle of horizontal plane,；After valve installation, valve seat center line is perpendicular
Histogram is to it is 45 ° that the first wirerope, which pre-tightens area 24 and the second wirerope preload area 52 and the angle of vertical plane, at this time.
As shown in figure 3, wirerope recovery area 25 is slope, which is highest close to one end of the first wirerope precautionary areas 24
Point, slope are minimum point close to one end of rear end valve seat 12, the vertical range difference between the highs and lows on slope
The diameter of 0.5-1 wirerope, the angle of wirerope recovery area 25 and valve seat center line is 5-15 ° or so at this time.It is put in valve level
When setting, valve seat center line is horizontal direction, and the angle of wirerope recovery area 25 and horizontal plane is 5-15 ° at this time；Pacify in valve
After dress, valve seat center line is vertical direction, and the angle of wirerope recovery area 25 and vertical plane is 5-15 ° at this time.It should in the present embodiment
Angle is preferably 10 °.There is the wirerope recovery area 25 of certain slope by being arranged, wirerope is enabled to be detached from flashboard in time.
If the diameter of the wirerope used is 6.75mm, then the internal orifice dimension of rear end valve seat 12 is wider than the internal orifice dimension of front end valve seat 5
1.6875mm-3.375mm；It is 45 ° of left sides that first wirerope, which pre-tightens area 24 and the second wirerope preload area 52 and the angle of valve seat center line,
It is right；Vertical range between the highs and lows of wirerope recovery area 25 differs 3.375mm-6.75mm；Wirerope recovery area 25
Angle with valve seat center line is 10 ° or so.
The course of work of the shearing safety valve of the present embodiment described briefly below when shearing wirerope：
As shown in Fig. 1, the shearing safety valve of the present embodiment is to surge or pneumatic actuation, single valve seat one-way operation safety valve.
Wherein valve rod 9 passes through valve deck 8, and the upper end of valve rod 9 is connect with driver, and lower end and the flashboard 2 of valve rod 9 are connected through a screw thread.It is logical
It crosses and surges or air-operated apparatus operation carrys out controlled valve, realize the quick mutual shear motion between flashboard 2 and front end valve seat 5.
When in case of emergency needing to shear wirerope, valve rod 9 drives flashboard 2 to move upwards.Second shearing slip face, 53 He
First shearing slip face 22 is in close contact and sliding motion relative to the second shearing slip face 53 is done in the first shearing slip face 22.Lock
When plate 2 is rapidly achieved a certain position, the second shearing edge 54 and the first shearing edge 23 are contacted with wirerope to be sheared respectively, according to
The momentum in short-term of momentum theorem, flashboard 2 is converted to shear energy.Start to shear wirerope, the second shearing edge 54 and the first shearing
Cutting edge 23 and wirerope contact point can be considered instantaneous set point.At this point, pre-tightening area 52 and the first wirerope preload area 24 in the second wirerope
Collective effect under, two interregional wireropes are instantaneously tensed, and in order to fixed wirerope shearing inclination, energy needed for reducing is fast
Speed cutting wirerope.Under the action of wirerope recovery area 25, wirerope only has a cutting mouth.And since the first wirerope pre-tightens area 24
All there is internal orifice dimension of the internal orifice dimension greater than front end valve seat 5 of certain gradient, rear end valve seat 12, Neng Goubao with wirerope recovery area 25
For card before flashboard 2 reaches and closes valve location, downstream wirerope can be detached from flashboard channel in time, guarantee the shutdown in time of valve safety.
Valve seat flashboard shearing combined mechanism of the invention quickly can carry out shearing manipulation to wirerope in a sudden situation, especially
The case where being less than 13mm it is suitable for wirerope diameter；And shearing manipulation can be repeatedly carried out, utmostly extend valve seat and flashboard
Service life.
The above embodiments merely illustrate the technical concept and features of the present invention, and its object is to allow person skilled in the art
Scholar cans understand the content of the present invention and implement it accordingly, and it is not intended to limit the scope of the present invention, it is all according to the present invention
Equivalent change or modification made by Spirit Essence, should be covered by the protection scope of the present invention.
Claims (10)
1. a kind of valve seat flashboard shears combined mechanism, including mutually matched flashboard and valve seat, it is characterised in that：The flashboard leans on
The side of the nearly valve seat is provided with the embedded broach shell of flashboard, and the valve seat is provided with and the lock close to the side of the flashboard
The embedded broach shell of the mutually matched valve seat of the embedded broach shell of plate；The embedded broach shell of flashboard includes and the embedded knife of the valve seat
Cover mutually matched first shearing edge, close to the valve seat the first shearing slip face, be located at first shearing edge it is remote
The first wirerope precautionary areas and wirerope recovery area from first shearing slip face side；The embedded broach shell of valve seat include with
Mutually matched second shearing of the second shearing edge and first shearing slip face that first shearing edge matches is slided
Dynamic face, the second wirerope precautionary areas positioned at second shearing edge far from the flashboard side.
2. a kind of valve seat flashboard according to claim 1 shears combined mechanism, it is characterised in that：The valve seat includes front end
Valve seat and rear end valve seat, the embedded knife of valve seat are set on the front end valve seat, and the rear end valve seat is close to the lock
The side of plate is provided with insertion set.
3. a kind of valve seat flashboard according to claim 2 shears combined mechanism, it is characterised in that：The rear end valve seat it is interior
The diameter of the wide 0.25-0.5 wirerope of the internal orifice dimension of front end valve seat described in aperture ratio.
4. a kind of valve seat flashboard according to claim 1 shears combined mechanism, it is characterised in that：First shearing slip
The surface roughness in face and the second shearing slip face is 0.1-0.2.
5. a kind of valve seat flashboard according to claim 1 shears combined mechanism, it is characterised in that：Tell the first shearing edge
It is mutually matched right angle incision with the second shearing edge.
6. a kind of valve seat flashboard according to claim 1 shears combined mechanism, it is characterised in that：First wirerope pre-tightens
It is 30-60 ° that area and the second wirerope, which pre-tighten area and the angle of the valve seat center line,.
7. a kind of valve seat flashboard according to claim 1 shears combined mechanism, it is characterised in that：The wirerope recovery area is
Slope, the vertical range between the highs and lows on the slope are the diameter of 0.5-1 wirerope.
8. a kind of valve seat flashboard according to claim 7 shears combined mechanism, it is characterised in that：The wirerope recovery area with
The angle of the valve seat center line is 5-15 °.
9. a kind of shearing safety valve, including valve body, valve seat, flashboard, valve deck and valve rod, the valve deck is equipped with bar seal assembly
And gland, the valve rod can be axially rotatably arranged in the valve deck around itself, the lower end of the valve rod and the lock
Plate is threadedly coupled, and lumen sealing ring is provided between the valve deck and the valve body, is arranged between the valve seat and the valve body
There is sealing element, it is characterised in that：The shearing safety valve further includes as described in claim 1-8 any one claim
Valve seat flashboard shears combined mechanism.
10. a kind of shearing safety valve according to claim 9, it is characterised in that：The sealing element includes being arranged in institute
State outer ring sealing ring and inner ring sealing ring of the valve seat on the valve body side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810770688.XA CN108869866B (en) | 2018-07-13 | 2018-07-13 | Disk seat flashboard shearing combined mechanism and shearing type safety valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810770688.XA CN108869866B (en) | 2018-07-13 | 2018-07-13 | Disk seat flashboard shearing combined mechanism and shearing type safety valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108869866A true CN108869866A (en) | 2018-11-23 |
| CN108869866B CN108869866B (en) | 2019-12-24 |
Family
ID=64301914
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810770688.XA Active CN108869866B (en) | 2018-07-13 | 2018-07-13 | Disk seat flashboard shearing combined mechanism and shearing type safety valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108869866B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4997162A (en) * | 1989-07-21 | 1991-03-05 | Cooper Industries, Inc. | Shearing gate valve |
| GB2286652A (en) * | 1994-02-09 | 1995-08-23 | Fmc Corp | Wire cutting insert for gate valve |
| US5713581A (en) * | 1994-10-03 | 1998-02-03 | Hydril Company | Fibrous seal for blowout preventer |
| CN201129166Y (en) * | 2007-12-17 | 2008-10-08 | 王政权 | Shearing flashboard valve |
| CN201884690U (en) * | 2010-12-21 | 2011-06-29 | 上海神开石油化工装备股份有限公司 | Super-high pressure flat plate gate valve |
| CN103115156A (en) * | 2011-11-16 | 2013-05-22 | 韦特柯格雷公司 | Gate shear valve |
-
2018
- 2018-07-13 CN CN201810770688.XA patent/CN108869866B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4997162A (en) * | 1989-07-21 | 1991-03-05 | Cooper Industries, Inc. | Shearing gate valve |
| GB2286652A (en) * | 1994-02-09 | 1995-08-23 | Fmc Corp | Wire cutting insert for gate valve |
| US5713581A (en) * | 1994-10-03 | 1998-02-03 | Hydril Company | Fibrous seal for blowout preventer |
| CN201129166Y (en) * | 2007-12-17 | 2008-10-08 | 王政权 | Shearing flashboard valve |
| CN201884690U (en) * | 2010-12-21 | 2011-06-29 | 上海神开石油化工装备股份有限公司 | Super-high pressure flat plate gate valve |
| CN103115156A (en) * | 2011-11-16 | 2013-05-22 | 韦特柯格雷公司 | Gate shear valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108869866B (en) | 2019-12-24 |
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