CN107218011B - A kind of multi-functional cock - Google Patents
A kind of multi-functional cock Download PDFInfo
- Publication number
- CN107218011B CN107218011B CN201710359217.5A CN201710359217A CN107218011B CN 107218011 B CN107218011 B CN 107218011B CN 201710359217 A CN201710359217 A CN 201710359217A CN 107218011 B CN107218011 B CN 107218011B
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- China
- Prior art keywords
- pressure
- valve
- cock
- pilot channel
- pressure measuring
- 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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- 238000010079 rubber tapping Methods 0.000 claims abstract description 12
- 238000007789 sealing Methods 0.000 claims description 24
- 239000007787 solid Substances 0.000 claims 1
- 238000005260 corrosion Methods 0.000 abstract description 6
- 238000012423 maintenance Methods 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 238000009434 installation Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 4
- 230000008439 repair process Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 241000521257 Hydrops Species 0.000 description 1
- 206010030113 Oedema Diseases 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/02—Valve arrangements for boreholes or wells in well heads
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Safety Valves (AREA)
- Indication Of The Valve Opening Or Closing Status (AREA)
- Valve Housings (AREA)
Abstract
The invention provides a kind of multi-functional cock, including cock ontology, and bottom is equipped with the pressure installing port for connecting with exterior tubing, and the pressure pilot channel being connected to the pressure installing port is equipped in cock ontology；Pressure measuring valve and relief valve, the corresponding left and right sides for being mounted on cock ontology；The installing port of the pressure measuring valve is connected to by pressure measuring valve interface channel with pressure pilot channel, and the installing port of the relief valve is connected to by pilot channel with pressure measuring valve interface channel；Cock body upper part has two-sided top of the slope structure, pressure tappings is offered on each side slope top, two pressure tappings are interconnected by inner passage, and are connected to simultaneously by pressure channel with above-mentioned pilot channel；There are also connection pilot channel pressure relief openings.This cock has convenient for production, and structure is simple, and maintenance is easy, easy for installation, flexible operation, good airproof performance, anti-corrosion and the advantages that be hardly damaged, save space.
Description
Technical field
The invention belongs to technical field of petroleum industry, more particularly, to a kind of multi-functional cock.
Background technique
In gas production production technology, well head is equipped with the cock for being respectively used to pressure, filling, but in actual production, works as increasing
When new operation being added to need to increase filler or pressure tappings, there is no safe space required for producing.Former cock is often used
It is either filled in pressure, the two cannot be taken into account.Such as: automatic alcohol injection tank needs to be filled by cock, at this moment just can not
Carry out pressure.Structure is complicated for conventional cock, frequently occurs failure, maintenance difficult, corrosion phenomenon easily occurs in operating difficulties.Often
It is motionless to see that failure has pressure relief valve to twist, handwheel is perishable, gas leakage, can not repair, seriously affect construction operation.And it is multi-functional
Cock in summary factor, devises the simple valve body of structure, simplifies pressure relief valve, strengthen sealing performance, reduce
Corrosion, improves quality.
Summary of the invention
In view of this, the invention is intended to overcome above-mentioned defect existing in the prior art, proposes that one kind is multi-functional and examine
Gram.
In order to achieve the above objectives, the technical solution of the invention is achieved in that
A kind of multi-functional cock, comprising:
Cock ontology, bottom are equipped with pressure installing port for connecting with exterior tubing, be equipped in cock ontology with
The pressure pilot channel of pressure installing port connection；
Pressure measuring valve and relief valve, the corresponding left and right sides for being mounted on cock ontology；The installing port of the pressure measuring valve is by taking
Pressure valve interface channel is connected to pressure pilot channel, and the installing port of the relief valve passes through pilot channel and pressure measuring valve interface channel
Connection；
Cock body upper part has two-sided top of the slope structure, offers pressure tappings on each side slope top, two pressure tappings pass through
Inner passage is interconnected, and is connected to simultaneously by pressure channel with above-mentioned pilot channel；
Pressure relief opening, the pressure relief opening connect the pilot channel.
Further, the pilot channel includes the adjustment section and tool internal thread cooperation section of inner wall smooth, and cooperates section
Internal diameter is greater than adjustment section internal diameter.
Further, the relief valve includes that the screw thread section being threadedly coupled with the cooperation section and outer diameter are less than screw thread section
Light shell of column.
Further, the pressure relief opening is connected to the cooperation section part.
Further, the turn handle of round pie structure is equipped on the relief valve and pressure measuring valve.
Further, the pressure measuring valve interface channel include in pressure pilot channel side internal thread segment and
Smooth hole section in the pressure pilot channel other side；Smooth hole section connects with the pilot channel.
Further, the smooth hole section and pilot channel junction are equipped with sealing inclined-plane, and the pressure measuring valve is equipped with
With the tapered end of sealing inclined-plane cooperation.
Further, the two-sided top of the slope structure of the cock body upper part is in isosceles right triangle structure.
Further, the pilot channel and the pressure measuring valve interface channel are coaxially disposed.
Further, the pressure measuring valve includes valve body, valve rod and prevents raising one's hat；Setting has outer-hexagonal structure on the valve body
Head is loaded and unloaded, prevents raising one's hat in handling head lateral ends connection, is screwed in the intrinsic one end of the cock with seal chamber, institute
State valve rod sequentially pass through it is anti-raise one's hat and valve body, and be equipped with anticreep card on anti-internal valve rod of raising one's hat；In the close of valve body
It seals intracavitary equipped with the sealing rubber ring being sleeved on valve rod and for the extruding plug of fixing seal cushion rubber；The valve rod stretches out valve body
One end be equipped with screwed connection section and light beam extension.
Compared with the existing technology, the invention has the advantage that
1) multi-functional cock provided by the invention, using the structure of Central Symmetric, upper end has top of the slope, is not easy
Hydrops has certain anti-corrosion effect, especially, compared with traditional cock, had more an installing port, save space and at
This, using being directly connected to, pressure transmitting is unobstructed for inside.Relief valve uses silk plug structure type, and pressure measuring valve uses the silk of interior sealing
Stifled structure type, structure is simple, is hardly damaged, easy to repair.
2) it is all provided with the handle of round pie structure on pressure measuring valve and relief valve, substantially increases the load intensity used,
It is hardly damaged, simple column structure is more a simplified pressure measuring valve and relief valve, keeps operation more convenient, is convenient for hand operation and dimension
It repairs, quality is strengthened.
3) pressure measuring valve use interior sealing means, pressure is higher, seal it is tighter, structure have the function of it is anti-tripping, simply
Practical, structure is simple, is hardly damaged, and easy to maintenance.
4) the cock ontology in the invention can be first mounted in equipment, then install pressure measuring valve and relief valve again,
Therefore can be applied to the range of narrow space, limitation is small, and it is applied widely, certainly, as needed, can also first group it install
Cheng Houzai is mounted in equipment.
Detailed description of the invention
The attached drawing for constituting a part of the invention is used to provide to further understand the invention, present invention wound
The illustrative embodiments and their description made are used to explain the present invention creation, do not constitute the improper restriction to the invention.?
In attached drawing:
Fig. 1 is the schematic perspective view of the invention；
Fig. 2 is the cross-sectional view of cock ontology in the invention；
Fig. 3 is the schematic perspective view that the cock ontology of internal structure is indicated in the invention；
Fig. 4 is the structural schematic diagram of the invention anticreep card；
Fig. 5 is the structural schematic diagram of the invention pressure measuring valve；
Fig. 6 is the structural schematic diagram of the valve body of pressure measuring valve in the invention；
Fig. 7 is the structural schematic diagram of relief valve in the invention.
Description of symbols:
1- cock ontology；2- pressure installing port；3- pressure pilot channel；4- pressure measuring valve；5- relief valve；The connection of 6- pressure measuring valve
Channel；7- pilot channel；8- pressure tappings；9- pressure channel；10- pressure relief opening；11- adjustment section；12- cooperates section；13- screw thread section；
14- light shell of column；15- turn handle；16- internal thread segment；The smooth hole section of 17-；18- sealing inclined-plane；19- tapered end；20- valve body；21-
Valve rod；22- is anti-to raise one's hat；23- loads and unloads head；24- seal chamber；25- card slot；26- anticreep card；27- sealing rubber ring；28- squeezes stifled
Head；29- screwed connection section；30- light beam extension；31- top of the slope.
Specific embodiment
It should be noted that in the absence of conflict, the feature in embodiment and embodiment in the invention can
To be combined with each other.
In the description of the invention, it is to be understood that term " center ", " longitudinal direction ", " transverse direction ", "upper", "lower",
The orientation or positional relationship of the instructions such as "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside" is
It is based on the orientation or positional relationship shown in the drawings, is merely for convenience of description the invention and simplifies description, rather than indicate
Or imply that signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore cannot understand
For the limitation to the invention.In addition, term " first ", " second " etc. are used for description purposes only, and should not be understood as indicating
Or it implies relative importance or implicitly indicates the quantity of indicated technical characteristic." first ", " second " etc. are defined as a result,
Feature can explicitly or implicitly include one or more of the features.In the description of the invention, unless separately
It is described, the meaning of " plurality " is two or more.
In the description of the invention, it should be noted that unless otherwise clearly defined and limited, term " peace
Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally
Connection；It can be mechanical connection, be also possible to be electrically connected；Can be directly connected, can also indirectly connected through an intermediary,
It can be the connection inside two elements.For the ordinary skill in the art, on being understood by concrete condition
State concrete meaning of the term in the invention.
The present invention will be described in detail below with reference to the accompanying drawings and embodiments creates.
A kind of multi-functional cock, as shown in Fig. 1 to 7, comprising:
Cock ontology 1, bottom are equipped with the pressure installing port 2 for connecting with exterior tubing, are equipped in cock ontology 1
The pressure pilot channel 3 being connected to the pressure installing port；In general, pressure installing port 2 can be protrusion and cock ontology bottom surface
Link block with threaded hole；Cock ontology uses stainless steel material, design work pressure-bearing 25Mpa；
Pressure measuring valve 4 and relief valve 5, the corresponding left and right sides for being mounted on cock ontology 1；The installing port of the pressure measuring valve 4 is logical
It crosses pressure measuring valve interface channel 6 to be connected to pressure pilot channel 3, the installing port of the relief valve 5 passes through pilot channel 7 and pressure measuring valve
Interface channel 6 is connected to；Specifically, the installing port of relief valve can be the connection with threaded hole of protrusion Yu this body side surface of cock
Block, the installing port of pressure measuring valve can be the threaded hole directly opened up in cock ontology；
1 top of cock ontology has two-sided top of the slope structure, offers pressure tappings 8 on each side slope top 31, two sides take
It presses mouth to be interconnected by inner passage, and is connected to a pressure channel 9 simultaneously, the pressure channel 9 and above-mentioned pilot channel 3 connect
It is logical；It is additionally provided with the pressure relief opening 10 for connecting the pilot channel 3.
This cock has convenient for production, and structure is simple, and maintenance is easy, easy for installation, flexible operation, good airproof performance, anti-corrosion
And the advantages that being hardly damaged, saving space.Cock ontology can be first mounted in equipment, then install pressure measuring valve and pressure release again
Valve, therefore can be applied to the range of narrow space, limitation is small, applied widely, certainly, as needed, can also first group
It is mounted in equipment again after the completion of dress.
For the ease of embodying the internal structure of cock ontology, as shown in figure 3, it is straight to have indicated each channel of cock body interior
The relative positional relationship of diameter, specifically, above-mentioned pilot channel 7 includes the adjustment section 11 and tool internal thread cooperation of inner wall smooth
Section 12, and 12 internal diameter of section is cooperated to be greater than 11 internal diameter of adjustment section, pressure relief opening is connected to cooperation section part.
Above-mentioned pressure measuring valve interface channel 6 includes being in the internal thread segment 16 of 9 side of pressure pilot channel and being in
The smooth hole section 17 of 9 other side of pressure pilot channel；The smooth hole section 17 connects with the pilot channel 7.
Above-mentioned relief valve 5 includes the outer diameter of the screw thread section 13 and screw thread section front end that are threadedly coupled with the cooperation section 12
Less than the light shell of column 14 of screw thread section 13, when outer stubborn relief valve, the cooperation section in the light shell of column retraction pilot channel of relief valve, at this time
Pressure relief opening is connected to pressure channel, residual compression can be discharged.
The turn handle 15 of round pie structure is equipped on the relief valve and pressure measuring valve.Substantially increase the load used
Intensity is hardly damaged, and simple column structure is more a simplified pressure measuring valve and relief valve, keeps operation more convenient, is convenient for free-standing exercise
Make and maintenance, quality are strengthened.
Above-mentioned smooth hole section 17 and 7 junction of pilot channel are equipped with sealing inclined-plane 18, the pressure measuring valve be equipped with
The tapered end 19 of sealing inclined-plane cooperation.Sealing inclined-plane 18 can use 450Angle trapezoidal inclined plane.The sealing means used is face contacts
Formula sealing, contact area is big, and sealing effect is preferable.And trapezoidal interior sealing, pressure is higher, seals tighter.
The two-sided top of the slope structure on above-mentioned 1 top of cock ontology is in isosceles right triangle structure.Pressure installing port is set respectively
The geometric center in top two sides is set, uses general screw thread inside pressure installing port, for connecting pressure gauge, alcohol head is infused, leads to
With silk plug etc..
Above-mentioned pilot channel 7 is coaxially disposed with the pressure measuring valve interface channel 6, and topology layout is compact, saves space, and two
Person is correspondingly arranged, and is in the left and right sides part of cock ontology, operates pressure measuring valve and relief valve and operates respectively on both sides, mutually
It is noiseless, reduce operation error.
Above-mentioned pressure measuring valve 4 includes valve body 20, valve rod 21 and anti-raises one's hat 22；Setting has outer-hexagonal structure on the valve body 20
Handling head 23, raise one's hat 22 23 lateral ends of handling head connection is anti-, being screwed in the intrinsic one end of the cock has
Seal chamber 24, the valve rod 21 sequentially pass through anti-raise one's hat 22 and valve body 20, and in the card slot 25 in anti-internal valve rod of raising one's hat
It is equipped with anticreep card 26.
The sealing rubber ring 27 being sleeved on valve rod and squeezing for fixing seal cushion rubber are equipped in the seal chamber of valve body 20
Press plug 28；One end that the valve rod 21 stretches out valve body 20 is equipped with screwed connection section 29 and light beam extension 30.It can also be in light
The positioning section 32 in the adjustment section for protruding into pilot channel is arranged in column extension front end, which prolongs less than light beam
Long sections of straight diameter.
When assembling pressure measuring valve, valve rod, which initially passes through, to be prevented raising one's hat, then installs anticreep card, is then passed through ontology.Anti- raise one's hat passes through
Screw thread is connect with ontology, tightens anti-raise one's hat.Trapezoidal sealing rubber ring is installed again, tightens extruding plug, is compacted trapezoidal sealant
Circle realizes interior sealing, and pressure is higher, seals tighter.Pressure measuring valve uses interior sealing means, and pressure is higher, seals tighter, structure
Have the function of anti-tripping, simple and practical, structure is simple, is hardly damaged, and easy to maintenance.
When outer stubborn valve rod, anticreep card can control valve rod range, prevent valve rod from threading off.Pressure measuring valve passes through screw thread
It is mounted on cock ontology pressure tappings, gasket can be installed on the inside of pressure tappings and mounting head and realize the close of pressure measuring valve and ontology
Envelope.
When this cock is mounted on pipeline, interior stubborn relief valve, outer stubborn pressure measuring valve, pressure is transferred to by each pressure channel
Pressure tappings realize internal connection and pressure.Interior stubborn pressure measuring valve, makes light beam extension 30 cross pressure pilot channel, and light beam extends
Section blocks pressure pilot channel, and the transmitting of pressure in cock ontology has been truncated, and stubborn pressure release silk plug outer at this time, residual compression is by leading
Pressure passageway is transferred to pressure relief opening, realizes pressure release, guarantees the safety of operation.
Multi-functional cock provided by the invention, using the structure of Central Symmetric, upper end has top of the slope, is not easy to accumulate
Liquid has certain anti-corrosion effect, and cock body thickness pressure-bearing meets 25Mpa design, and structural behaviour is good, with traditional cock phase
Than having more an installing port, saving space and cost, using being directly connected to, pressure transmitting is unobstructed for inside.Relief valve uses silk
Stifled structure type, pressure measuring valve use the silk plug structure type of interior sealing, and structure is simple, is hardly damaged, easy to repair.Pressure measuring valve and
It is all provided with handle on relief valve, substantially increases the convenience used, is convenient for hand operation.
The foregoing is merely the preferred embodiments of the invention, are not intended to limit the invention creation, all at this
Within the spirit and principle of innovation and creation, any modification, equivalent replacement, improvement and so on should be included in the invention
Protection scope within.
Claims (8)
1. a kind of multi-functional cock characterized by comprising
Cock ontology, bottom are equipped with the pressure installing port for connecting with exterior tubing, are equipped in cock ontology and take with this
Press the pressure pilot channel of installing port connection；
Pressure measuring valve and relief valve, the corresponding left and right sides for being mounted on cock ontology；The installing port of the pressure measuring valve passes through pressure measuring valve
Interface channel is connected to pressure pilot channel, and the installing port of the relief valve is connected by pilot channel and pressure measuring valve interface channel
It is logical；
Cock body upper part has two-sided top of the slope structure, offers pressure tappings on each side slope top, two pressure tappings pass through inside
Channel is interconnected, and is connected to simultaneously by pressure channel with above-mentioned pilot channel；
Pressure relief opening, the pressure relief opening connect the pilot channel；The pilot channel includes the adjustment section of inner wall smooth and has interior
The cooperation section of screw thread, and section internal diameter is cooperated to be greater than adjustment section internal diameter；The pressure relief opening is connected to the cooperation section part.
2. a kind of multi-functional cock according to claim 1, it is characterised in that: the relief valve includes and the cooperation section
The screw thread section and outer diameter of threaded connection are less than the light shell of column of screw thread section.
3. a kind of multi-functional cock according to claim 1, it is characterised in that: be equipped on the relief valve and pressure measuring valve
The turn handle of round pie structure.
4. a kind of multi-functional cock according to claim 1, it is characterised in that: the pressure measuring valve interface channel includes being in
The internal thread segment of pressure pilot channel side and smooth hole section in the pressure pilot channel other side；It is described smooth
Hole section connects with the pilot channel.
5. a kind of multi-functional cock according to claim 4, it is characterised in that: the smooth hole section is connect with pilot channel
Place is equipped with sealing inclined-plane, and the pressure measuring valve is equipped with the tapered end to match with the sealing inclined-plane.
6. a kind of multi-functional cock according to claim 1, it is characterised in that: the two-sided top of the slope of the cock body upper part
Structure is in isosceles right triangle structure.
7. a kind of multi-functional cock according to claim 1, it is characterised in that: the pilot channel and the pressure measuring valve connect
Connect road coaxial arrangement.
8. a kind of multi-functional cock according to claim 1, it is characterised in that: the pressure measuring valve include valve body, valve rod and
It is anti-to raise one's hat；Setting has the handling head of outer-hexagonal structure on the valve body, prevents raising one's hat in handling head lateral ends connection, revolve
The intrinsic one end of the cock is screwed in seal chamber, the valve rod sequentially pass through it is anti-raise one's hat and valve body, and be in anticreep
Valve rod inside cap is equipped with anticreep card；The sealing rubber ring being sleeved on valve rod is equipped in the seal chamber of valve body and for solid
Determine the extruding plug of sealing rubber ring；One end that the valve rod stretches out valve body is equipped with screwed connection section and light beam extension.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710359217.5A CN107218011B (en) | 2017-05-19 | 2017-05-19 | A kind of multi-functional cock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710359217.5A CN107218011B (en) | 2017-05-19 | 2017-05-19 | A kind of multi-functional cock |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107218011A CN107218011A (en) | 2017-09-29 |
| CN107218011B true CN107218011B (en) | 2019-07-16 |
Family
ID=59944736
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710359217.5A Active CN107218011B (en) | 2017-05-19 | 2017-05-19 | A kind of multi-functional cock |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107218011B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4860826A (en) * | 1988-01-28 | 1989-08-29 | Land John L | Apparatus for sealing a tubing string in a high pressure wellbore |
| CN2578631Y (en) * | 2002-10-18 | 2003-10-08 | 吴宝山 | Multifunctional valves |
| RU2271438C2 (en) * | 2004-04-28 | 2006-03-10 | Общество с ограниченной ответственностью фирма "Саратовгазприборавтоматика" | Shutoff valve |
| CN201561130U (en) * | 2009-11-09 | 2010-08-25 | 杨文军 | Oil well plug valve |
| CN201943654U (en) * | 2011-01-28 | 2011-08-24 | 瞿建华 | Pressure-taking and sampling combined valve |
| CN202348184U (en) * | 2011-12-14 | 2012-07-25 | 中国石油集团渤海钻探工程有限公司 | Double-wall double-channel single-sealing cock valve |
| WO2013037049A1 (en) * | 2011-09-14 | 2013-03-21 | Michael Boyd | Rotating flow control device for wellbore fluid control device |
| CN103742105A (en) * | 2014-02-08 | 2014-04-23 | 东营市创元石油机械制造有限公司 | Multifunctional plug valve for oil drilling |
| CN205154101U (en) * | 2015-11-12 | 2016-04-13 | 中石化石油工程技术服务有限公司 | Portable high -pressure plug valve |
-
2017
- 2017-05-19 CN CN201710359217.5A patent/CN107218011B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4860826A (en) * | 1988-01-28 | 1989-08-29 | Land John L | Apparatus for sealing a tubing string in a high pressure wellbore |
| CN2578631Y (en) * | 2002-10-18 | 2003-10-08 | 吴宝山 | Multifunctional valves |
| RU2271438C2 (en) * | 2004-04-28 | 2006-03-10 | Общество с ограниченной ответственностью фирма "Саратовгазприборавтоматика" | Shutoff valve |
| CN201561130U (en) * | 2009-11-09 | 2010-08-25 | 杨文军 | Oil well plug valve |
| CN201943654U (en) * | 2011-01-28 | 2011-08-24 | 瞿建华 | Pressure-taking and sampling combined valve |
| WO2013037049A1 (en) * | 2011-09-14 | 2013-03-21 | Michael Boyd | Rotating flow control device for wellbore fluid control device |
| CN202348184U (en) * | 2011-12-14 | 2012-07-25 | 中国石油集团渤海钻探工程有限公司 | Double-wall double-channel single-sealing cock valve |
| CN103742105A (en) * | 2014-02-08 | 2014-04-23 | 东营市创元石油机械制造有限公司 | Multifunctional plug valve for oil drilling |
| CN205154101U (en) * | 2015-11-12 | 2016-04-13 | 中石化石油工程技术服务有限公司 | Portable high -pressure plug valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107218011A (en) | 2017-09-29 |
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Effective date of registration: 20211101 Address after: 100007 No. 9 North Main Street, Dongcheng District, Beijing, Dongzhimen Patentee after: CHINA NATIONAL PETROLEUM Corp. Patentee after: CNPC Bohai Drilling Engineering Co.,Ltd. Address before: No.106 Huanghai Road, Binhai New Economic and Technological Development Zone, Tianjin 300457 Patentee before: CNPC Bohai Drilling Engineering Co.,Ltd. |