CN105179715B - A kind of drilling fluid switch valve - Google Patents
A kind of drilling fluid switch valve Download PDFInfo
- Publication number
- CN105179715B CN105179715B CN201510520653.7A CN201510520653A CN105179715B CN 105179715 B CN105179715 B CN 105179715B CN 201510520653 A CN201510520653 A CN 201510520653A CN 105179715 B CN105179715 B CN 105179715B
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- Prior art keywords
- valve
- drilling fluid
- valve disc
- disc
- opening
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- 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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/36—Valve members
-
- 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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/46—Attachment of 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
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Details Of Valves (AREA)
- Multiple-Way Valves (AREA)
- Taps Or Cocks (AREA)
Abstract
The invention provides a kind of drilling fluid switch valve, the valve pocket of upper end open is provided with valve body, drilling fluid inlet pipeline and drilling fluid outlet pipeline are connected with valve pocket, valve rod connects valve disc and drives valve disc to be spindle rotationally arranged in valve pocket, valve rod is the Step Shaft that diameter is sequentially reduced from top to bottom, including first step, second step, 3rd step and the 4th step, thrust ball bearing is arranged with the second step, and the blowout patche on the downside of the thrust ball bearing is by located at the 3rd step upper surface of valve rod, seat ring on the upside of thrust ball bearing is compressed by the valve for being arranged on valve pocket upper end is stifled；The application is provided with thrust ball bearing on the valve rod of rotation, the thrust ball bearing can bear axial impact of the cleaner for high-pressure drilling fluid to valve rod of valve pocket lower end, avoiding valve rod is influenceed by valve cavity pressure and produces larger sliding friction with upper and lower contact surface, greatly reduces rotary resistance.
Description
Technical field
The present invention relates to switch valve technical field, more particularly to a kind of drilling fluid switch valve.
Background technology
In geological work, such as in the engineering of petrochemical industry exploration or natural gas extraction, being required to will using drilling well
Stratum is drilled.Drilling fluid is the scouring media used in hole in drilling process, and it is typically pumped into drilling by drilling pump
In.It is that the circulation of control drilling fluid is commonly utilized in well system with blocking drilling fluid switch valve.
Traditional mud gate valve (switch valve) typically uses threaded stem lifting structure, by valve cavity pressure, and frequently
The influence of switch valve and mud medium, regulation process need larger turning moment so that operating process is very laborious；By valve from
Closing, which is transformed into, to be fully opened, it is necessary to the number of turns rotated is a lot, elapsed time；In Reusability, the air locking such as flashboard, valve rod
It is easy to by slurry erosion and loss of seal performance, is not closed completely so as to cause valve often to occur, frequently changes part and comprehensive
Close the defects of service life is short.In addition, this conventional regulator is difficult to automatic improving, current social is not adapted to
Equip intelligentized demand.
The content of the invention
The present invention provides a kind of drilling fluid switch valve, and its object is to provide a kind of switch for making valve rod rotary resistance reduction
Valve.
To use following technical scheme up to this purpose, the present invention：
The invention provides a kind of drilling fluid switch valve, including valve body, valve rod, valve disc, drilling fluid inlet pipeline and drilling well
Liquid outlet conduit, the interior valve pocket for being provided with upper end open of the valve body, the drilling fluid inlet pipeline and drilling fluid outlet pipeline are equal
It is connected with valve pocket, the valve rod connects valve disc and drives valve disc to be spindle rotationally arranged in valve pocket, and the valve rod is to be arrived from above
The Step Shaft that lower diameter is sequentially reduced, including first step, second step, the 3rd step and the 4th step, at described second
Thrust ball bearing is arranged with rank, and the blowout patche on the downside of the thrust ball bearing is by located at the 3rd step upper surface of valve rod, pushing away
Seat ring on the upside of power ball bearing is compressed by the valve for being arranged on valve pocket upper end is stifled.
Further technical scheme is that the valve disc includes dynamic valve disc setting up and down and quiet valve disc, and the dynamic valve disc is consolidated
Surely it is connected to the lower end of valve rod, the quiet valve disc is arranged in valve pocket and its outer wall is against valve pocket inwall, the quiet valve disc upper table
Face and dynamic valve disc lower surface gapless, the opening of up/down perforation is provided with the dynamic valve disc and quiet valve disc, moves valve disc
The upper end of opening is connected with drilling fluid inlet pipeline；The lower end of the opening of quiet valve disc is connected with drilling fluid outlet pipeline
It is logical；Drilling fluid enters valve pocket through drilling fluid inlet pipeline, and then flows into the opening of dynamic valve disc, rotates dynamic valve disc and causes dynamic valve disc
Opening connected with quiet valve disc opening, drilling fluid flows into quiet valve disc opening, so by drilling fluid outlet pipeline flow out with
Realize the opening of switch valve.
Further technical scheme is that the opening of the dynamic valve disc is crossed upwards for two and relatively dynamic valve disc axle center pair
Claim the oblique through hole set, the opening of the quiet valve disc crosses downwards for two and relatively quiet valve disc axle center is symmetrically arranged tiltedly logical
Hole, move the oblique through hole in valve disc lower surface and the oblique through hole of quiet valve disc upper surface is on same circumference and internal diameter is identical, when dynamic valve disc revolves
Turn conversion of 90 ° of achievable switch valves by full open position to fully closed condition.
Further technical scheme is the inner chamber phase that the opening of the dynamic valve disc is set with the 4th step lower end of valve rod
Connection, the 4th step axially offer otch, are connected in the incision inner chamber with valve pocket.
Further technical scheme is that sealing ring is arranged with the 3rd step of valve rod, and the sealing ring outer wall is provided with
For first sealing ring to realize the sealing with valve pocket inwall, the 3rd step is circumferentially machined with annular groove, the annular groove
The second sealing ring is inside provided with, the sealing ring and the 3rd step are sealed by the second sealing ring.
Further technical scheme is that the 3rd sealing ring is set between the quiet valve disc and the valve pocket.
Further technical scheme is to be connected with square joint, the square in the valve rod first step upper end
Joint external connection power mechanism.
Further technical scheme is that the valve rod passes through latch clamping with dynamic valve disc.
Further technical scheme is that the thrust ball bearing is double-direction thrust ball bearing.
Further technical scheme is, on the drilling fluid inlet pipeline and drilling fluid outlet pipeline welding and valve body.
Beneficial effects of the present invention are：
The application is provided with thrust ball bearing on the valve rod of rotation, and the thrust ball bearing can bear the high pressure of valve pocket lower end
To the axial impact of valve rod, avoid valve rod is influenceed and produces larger cunning with upper and lower contact surface drilling fluid by valve cavity pressure
Dynamic friction, greatly reduce rotary resistance.
Brief description of the drawings
Fig. 1 is the structural representation of drilling fluid switch valve provided by the invention；
Fig. 2 is the structural representation of valve body provided by the invention；
Fig. 3 is the front view of valve rod provided by the invention；
Fig. 4 is the side view of valve rod provided by the invention；
Fig. 5 is the front view of dynamic valve disc provided by the invention；
Fig. 6 is the top view of dynamic valve disc provided by the invention；
Fig. 7 is that drilling fluid provided by the invention switchs the opening that valve disc and quiet valve disc faying face are moved under valve closed mode
Structural representation.
In figure：
1st, valve body；2nd, valve rod；3rd, valve disc；4th, drilling fluid inlet pipeline；5th, drilling fluid outlet pipeline；6th, valve pocket；7th, thrust
Ball bearing；8th, valve blocks up；9th, opening；10th, inner chamber；11st, otch；12nd, sealing ring；13rd, the first sealing ring；14th, annular groove；
15th, the second sealing ring；16th, the 3rd sealing ring；17th, square joint；21st, first step；22nd, second step；23rd, the 3rd
Rank；24th, the 4th step；31st, valve disc is moved；32nd, quiet valve disc.
Embodiment
Further illustrate technical scheme below in conjunction with the accompanying drawings and by embodiment.
Present embodiments provide a kind of drilling fluid switch valve, including valve body 1, valve rod 2, valve disc 3, drilling fluid inlet pipeline 4
With drilling fluid outlet pipeline 5, the interior valve pocket 6 for being provided with upper end open of the valve body 1, the drilling fluid inlet pipeline 4 and drilling fluid
Outlet conduit 5 is welded on valve body 1 and the drilling fluid inlet pipeline 4 and drilling fluid outlet pipeline 5 are connected with valve pocket 6,
As shown in Fig. 2 the drilling fluid inlet pipeline 4 and drilling fluid outlet pipeline 5 are welded in the sustained height of valve body 1, drilling fluid inlet
Pipeline 4 is connected by passage up on valve body 1 with valve pocket 6, the passage that drilling fluid outlet pipeline 5 passes through the up-downgoing of valve body 1
It is connected with valve pocket 6.
The lower end of valve rod 2 connects valve disc 3 and drives valve disc 3 to be spindle rotationally arranged in inside valve pocket 6.Such as Fig. 1 and Fig. 3 institutes
Show, the valve rod 2 is diameter is sequentially reduced from top to bottom Step Shaft, including first step 21, second step 22, the 3rd step
23 and the 4th step 24, square joint 17 is connected with the upper end of 2 first step of valve rod 21, outside the square joint 17
Actuating unit is connect, actuating unit can rotate with ovable valve stem 2.Thrust ball bearing 7 is arranged with the second step 22,
And the blowout patche of the downside of thrust ball bearing 7 is by located at the upper surface of the 3rd step 23 of valve rod 2, the seat of the upside of thrust ball bearing 7
Circle is compressed by the valve stifled 8 for being arranged on the upper end of valve pocket 6.Preferably, the thrust ball bearing 7 is double-direction thrust ball bearing 7.
Sealing ring 12 is arranged with the 3rd step 23 of valve rod 2, the outer wall of sealing ring 12 is provided with the first sealing ring 13
To realize the sealing with the inwall of valve pocket 6, the 3rd step 23 is circumferential to be machined with annular groove 14, is set in the annular groove 14
The second sealing ring 15 is equipped with, the sealing ring 12 is sealed with the 3rd step 23 by the second sealing ring 15.On the 3rd step 23
The upside valve pocket 6 of 3rd step 23 and the 3rd step are realized by the sealing ring 13 of sealing ring 12 and first and the second sealing ring 15
The isolation of 23 downside valve pockets 6, prevent the drilling fluid in the valve pocket 6 of downside from entering upside valve pocket 6, influence the normal work of bearing.This
In embodiment, the upper end of sealing ring 12 is counter bore structure, prevents it is contacted with the blowout patche of rotation from causing to wear, and effectively keep away
The friction between sealing ring 12 and bearing race is exempted from.
Thrust ball bearing 7 is provided with the present embodiment on the valve rod 2 of rotation, the thrust ball bearing 7 can be born under valve pocket 6
The cleaner for high-pressure drilling fluid at end to the axial impact of valve rod 2, avoid valve rod 2 by pressure in valve pocket 6 influenceed and with upper and lower contact surface
Larger sliding friction is produced, greatly reduces rotary resistance, so under the inner high voltage state of valve pocket 6, only needs outside apply
Less turning moment, just can easily rotation valve rod 2, so as to drive valve disc 3 to rotate.
The lower end of 4th step 24 is connected with valve disc 3, and gap, the brill are provided between the 4th step 24 and valve pocket 6
Well liquid inlet pipeline 4 is connected by the up passage of valve body 1 with the valve pocket 6 at the 4th step 24, for flowing into drilling fluid.Institute
Stating valve disc 3 includes dynamic valve disc 31 and quiet valve disc 32 setting up and down, and the dynamic valve disc 31 is fixedly connected on the lower end of valve rod 2, tool
Body, the valve rod 2 passes through latch clamping with dynamic valve disc 31.The quiet valve disc 32 is arranged in valve pocket 6 and the quiet valve disc 32
The 3rd sealing ring 16 is set to prevent drilling fluid from quiet valve disc to realize the sealing of quiet valve disc 32 and valve pocket 6 between the valve pocket 6
Gap leakage between 32 and valve pocket 6.The upper surface of quiet valve disc 32 and the dynamic lower surface gapless of valve disc 31, the dynamic valve disc 31
With the opening 9 that up/down perforation is provided with quiet valve disc 32, the upper end of the opening 9 of dynamic valve disc 31 and drilling fluid inlet pipeline
4 are connected, specifically, as shown in figure 4, the lower end of the 4th step 24 of the opening 9 of the dynamic valve disc 31 and valve rod 2 set it is interior
Chamber 10 is connected, and the 4th step 24 axially offers otch 11, and inner chamber 10 is connected with valve pocket 6 at the otch 11.
The lower end of the opening 9 of quiet valve disc 32 is connected with drilling fluid outlet pipeline 5；Drilling fluid enters valve through drilling fluid inlet pipeline 4
Chamber 6, and then the opening 9 of dynamic valve disc 31 is flowed into, rotate dynamic valve disc 31 and cause the opening 9 of dynamic valve disc 31 and the stream of quiet valve disc 32
Through hole 9 connects, and drilling fluid flows into the opening 9 of quiet valve disc 32, and then is flowed out by drilling fluid outlet pipeline 5 to realize switch valve
To open, rotate dynamic valve disc 31 and the opening 9 of dynamic valve disc 31 and the opening 9 of quiet valve disc 32 are mutually staggered, drilling fluid does not circulate,
Switch valve is closed.
Preferably, as shown in Figure 5 and Figure 6, the opening 9 of the dynamic valve disc 31 is two valve discs that cross and move relatively upwards
The symmetrically arranged oblique through hole in 31 axle center, the opening 9 of the quiet valve disc 32 is crossed downwards for two and the relatively quiet axle center of valve disc 32
Symmetrically arranged oblique through hole, two oblique through holes make the impacting with high pressure energy of fluid in hole mutual using the formula design that crosses on valve disc 3
Offset, effectively prevent erosion infringement of the fluid to valve pocket 6.
Further, move the oblique through hole in the lower surface of valve disc 31 and the oblique through hole of the quiet upper surface of valve disc 32 is on same circumference and interior
Footpath is identical, as shown in fig. 7, the state that the opening 9 of valve disc 31 staggers completely with the quiet opening 9 of valve disc 32 is moved, it is horizontally disposed in figure
Two openings 9 be quiet valve disc 32 opening 9, two openings 9 arranged vertically are the opening 9 of dynamic valve disc 31, this
When four openings 9 it is almost tangent, that is to say, that when dynamic valve disc 31 is rotated by 90 ° achievable switch valve by complete open shape
Conversion of the state to fully closed condition.Switch valve full open position mentioned here is when the dynamic opening 9 of valve disc 31 and quiet valve
The opening 9 of disk 32 is in the completely corresponding state connected of its faying face, now, the maximum flow of drilling fluid.Switch valve closes completely
State is the state to stagger completely in its faying face with the quiet opening 9 of valve disc 32 when the dynamic opening 9 of valve disc 31, now, drilling fluid
Do not circulate.The rotation of dynamic 90 ° of the need of valve disc 31, you can make valve become maximum unlatching from complete closure, reduce the tune of valve
Pitch circle number and operating time.
The technical principle of the present invention is described above in association with specific embodiment.These descriptions are intended merely to explain the present invention's
Principle, and limiting the scope of the invention can not be construed in any way.Based on explanation herein, the technology of this area
Personnel would not require any inventive effort the other embodiments that can associate the present invention, and these modes are fallen within
Within protection scope of the present invention.
Claims (8)
1. a kind of drilling fluid switch valve, including valve body (1), valve rod (2), valve disc (3), drilling fluid inlet pipeline (4) and drilling fluid
Outlet conduit (5), the interior valve pocket (6) for being provided with upper end open of the valve body (1), the drilling fluid inlet pipeline (4) and drilling fluid
Outlet conduit (5) is connected with valve pocket (6), valve rod (2) the connection valve disc (3) and drive valve disc (3) rotatably setting
In valve pocket (6), it is characterised in that：The valve rod (2) is diameter is sequentially reduced from top to bottom Step Shaft, including first step
(21), second step (22), the 3rd step (23) and the 4th step (24), thrust ball is arranged with the second step (22)
Bearing (7), the thrust ball bearing (7) are double-direction thrust ball bearing, and the blowout patche on the downside of the thrust ball bearing (7) is by being located at valve
The 3rd step (23) upper surface of bar (2), the seat ring on the upside of thrust ball bearing (7) block up (8) by the valve for being arranged on valve pocket (6) upper end
Compress；Sealing ring (12) is arranged with the 3rd step (23) place of valve rod (2), sealing ring (12) upper end is counter bore structure,
Sealing ring (12) outer wall is provided with the first sealing ring (13) to realize the sealing of sealing ring (12) and valve pocket (6) inwall, described
3rd step (23) is circumferentially machined with annular groove (14), and the second sealing ring (15), institute are provided with the annular groove (14)
Sealing ring (12) is stated to seal by the second sealing ring (15) with the 3rd step (23).
2. drilling fluid switch valve according to claim 1, it is characterised in that：The valve disc (3) includes setting up and down move
Valve disc (31) and quiet valve disc (32), the dynamic valve disc (31) are fixedly connected on the lower end of valve rod (2), and the quiet valve disc (32) is set
In valve pocket (6) and its outer wall is against valve pocket (6) inwall, and quiet valve disc (32) upper surface and dynamic valve disc (31) lower surface are continuously
The opening (9) of up/down perforation is provided with gap, the dynamic valve disc (31) and quiet valve disc (32), moves the opening of valve disc (31)
(9) upper end is connected with drilling fluid inlet pipeline (4)；The lower end of the opening (9) of quiet valve disc (32) and drilling fluid outlet pipe
Road (5) is connected；Drilling fluid enters valve pocket through drilling fluid inlet pipeline (4), and then flows into the opening of dynamic valve disc (31), rotates
Dynamic valve disc (31) causes the opening (9) of dynamic valve disc (31) to be connected with the opening (9) of quiet valve disc (32), and drilling fluid flows into quiet valve
Disk (32) opening (9), and then flowed out by drilling fluid outlet pipeline (5) to realize the opening of switch valve.
3. drilling fluid switch valve according to claim 2, it is characterised in that：The opening (9) of the dynamic valve disc (31) is
Two symmetrically arranged oblique through holes in axle center for crossing upwards and moving valve disc (31) relatively, the opening (9) of the quiet valve disc (32)
Crossed downwards for two and the symmetrically arranged oblique through hole in quiet valve disc (32) axle center, dynamic valve disc (31) are affixed with quiet valve disc (32) relatively
At the surface of conjunction oblique through hole is on same circumference and internal diameter is identical, when dynamic valve disc (3) is rotated by 90 ° achievable switch valve by complete
Conversion of the open mode to fully closed condition.
4. the drilling fluid switch valve according to Claims 2 or 3, it is characterised in that：The opening of the dynamic valve disc (31)
(9) inner chamber (10) set with the 4th step (24) lower end of valve rod (2) is connected, and the 4th step (24) axially offers
Otch (11), it is connected in the otch (11) place inner chamber (10) with valve pocket (6).
5. drilling fluid switch valve according to claim 2, it is characterised in that：The quiet valve disc (32) and the valve pocket (6)
Between set the 3rd sealing ring (16).
6. drilling fluid switch valve according to claim 1, it is characterised in that：It is connected with the first step (21) upper end
Square joint (17), square joint (17) the external connection power mechanism.
7. drilling fluid switch valve according to claim 2, it is characterised in that：The valve rod (2) is with dynamic valve disc (3) by inserting
Pin card connects.
8. drilling fluid switch valve according to claim 1, it is characterised in that：The drilling fluid inlet pipeline (4) and drilling well
Liquid outlet conduit (5) is welded on valve body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510520653.7A CN105179715B (en) | 2015-08-21 | 2015-08-21 | A kind of drilling fluid switch valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510520653.7A CN105179715B (en) | 2015-08-21 | 2015-08-21 | A kind of drilling fluid switch valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105179715A CN105179715A (en) | 2015-12-23 |
| CN105179715B true CN105179715B (en) | 2018-03-20 |
Family
ID=54902016
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510520653.7A Active CN105179715B (en) | 2015-08-21 | 2015-08-21 | A kind of drilling fluid switch valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105179715B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4776565A (en) * | 1987-12-14 | 1988-10-11 | Sheen Guang Y | Water faucet valve |
| CN2401743Y (en) * | 1999-12-03 | 2000-10-18 | 温州市灵昆化工机械厂 | Regulation valve |
| CN1310306A (en) * | 2001-04-03 | 2001-08-29 | 中国石化胜利油田有限公司采油工艺研究院 | High pressure liquid valve and its intelligent monitoring system |
| CN2489152Y (en) * | 2001-06-26 | 2002-05-01 | 鞍山钢铁集团公司 | Special valve for cooling system of blast furnace cooling wall |
| CN201462017U (en) * | 2009-04-30 | 2010-05-12 | 罗邦远 | Triangle valve |
| CN201896960U (en) * | 2010-12-21 | 2011-07-13 | 安徽铜都阀门股份有限公司 | Rotary cutting type flow adjusting corner valve |
| CN103574126A (en) * | 2012-07-20 | 2014-02-12 | 赵焕仁 | Intelligent constant-current automatic control device |
| CN203797077U (en) * | 2014-02-14 | 2014-08-27 | 承德江钻石油机械有限责任公司 | Orifice plate type drilling throttling valve |
| CN204099608U (en) * | 2014-07-28 | 2015-01-14 | 中国石油化工股份有限公司 | A kind of throttle valve |
-
2015
- 2015-08-21 CN CN201510520653.7A patent/CN105179715B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4776565A (en) * | 1987-12-14 | 1988-10-11 | Sheen Guang Y | Water faucet valve |
| CN2401743Y (en) * | 1999-12-03 | 2000-10-18 | 温州市灵昆化工机械厂 | Regulation valve |
| CN1310306A (en) * | 2001-04-03 | 2001-08-29 | 中国石化胜利油田有限公司采油工艺研究院 | High pressure liquid valve and its intelligent monitoring system |
| CN2489152Y (en) * | 2001-06-26 | 2002-05-01 | 鞍山钢铁集团公司 | Special valve for cooling system of blast furnace cooling wall |
| CN201462017U (en) * | 2009-04-30 | 2010-05-12 | 罗邦远 | Triangle valve |
| CN201896960U (en) * | 2010-12-21 | 2011-07-13 | 安徽铜都阀门股份有限公司 | Rotary cutting type flow adjusting corner valve |
| CN103574126A (en) * | 2012-07-20 | 2014-02-12 | 赵焕仁 | Intelligent constant-current automatic control device |
| CN203797077U (en) * | 2014-02-14 | 2014-08-27 | 承德江钻石油机械有限责任公司 | Orifice plate type drilling throttling valve |
| CN204099608U (en) * | 2014-07-28 | 2015-01-14 | 中国石油化工股份有限公司 | A kind of throttle valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105179715A (en) | 2015-12-23 |
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