CN105333194B - The rotation process driving device of underwater gate valve - Google Patents
The rotation process driving device of underwater gate valve Download PDFInfo
- Publication number
- CN105333194B CN105333194B CN201510828622.8A CN201510828622A CN105333194B CN 105333194 B CN105333194 B CN 105333194B CN 201510828622 A CN201510828622 A CN 201510828622A CN 105333194 B CN105333194 B CN 105333194B
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- CN
- China
- Prior art keywords
- actuator housing
- gate valve
- underwater
- driving device
- 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
- F16K31/00—Actuating devices; Operating means; Releasing devices
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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
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/44—Mechanical actuating means
- F16K31/50—Mechanical actuating means with screw-spindle or internally threaded actuating means
- F16K31/502—Mechanical actuating means with screw-spindle or internally threaded actuating means actuating pivotable valve members
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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
- F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
Abstract
A kind of rotation process driving device of underwater gate valve, is equipped with：One driving device, driving device include：One driver, the switch indicating device and pressure equaliser of installation on a drive, and the lower end of pressure equaliser is connected with the inner cavity of driver；Wherein, driver is equipped with：Underwater robot moment of torsion interface, the head cover being sequentially arranged on underwater robot moment of torsion interface, actuator housing；And actuator housing is connected with stent, and equipped with sealing, it is mounted therein with override axis and operation lever；Switch indicating device includes：First axle sleeve, instruction transmission shaft, flange shaft sleeve and second bearing in the first axle sleeve other end in first axle sleeve one end；Pressure equaliser includes：Balancer casing, the balancer cap in balancer casing, membrane capsule.The present invention is used not only for seabed, underwater gate valve is operated by underwater robot torque tool, solves the problems, such as that underwater robot torque tool can not operate underwater gate valve.
Description
Technical field
The present invention relates to underwater gate valve, more particularly to a kind of it is used to pass through the rotation work on underwater robot in environments such as subsea
Has the rotation process driving device of the underwater gate valve of operation.Belong to Offshore Engineering field.
Background technology
Underwater valve refers to be applied to the valvular general designation of submarine pipeline institute.It adapts to ocean underwater State and underwater behaviour
Make.
At present, underwater valve is mainly used in offshore oil and gas extraction, and the valve of application mainly has ball valve, lock
Valve, check-valves, control valve etc., its mode of operation include：Diver's operation, underwater robot operation, hydraulic controlled operation etc..Due to it
Special use environment so that underwater valve is mounted differently than land, and therefore, underwater valve is more with the integrating device quilt such as manifold
It is installed on underwater.
At present, the more integrating device of offshore oil production and application has：End-of-pipe control manifold, under water production control manifold,
Subsea production tree etc..And underwater gate valve is then these essential parts of equipment, usually in land integrated installation at these
In equipment.Driving for gate valve is substantially completed by handwheel or handle, during shallow water operations, is installed on by diver's operation
Handwheel or handle on gate valve complete whole operation；When underwater gate valve is installed in more than diver's submerged depth, at this moment
Just need to operate gate valve switch by underwater robot.But due to robotic arm that underwater robot carries can only operate it is low
The valve of pressure, small latus rectum.For high pressure big orifice gate valve, since the moment of torsion that mechanical arm can be provided is very low, when gate valve work
Make hypertonia, bore it is larger when, just cannot complete the keying of gate valve, so, conventional gate valve driving handwheel or handle cannot
For deep water operating mode.In addition, existing gate valve driving handwheel or handle with underwater robot torque tool due to not matching
Interface, can not also be operated using underwater robot torque tool.
The content of the invention
It is a primary object of the present invention to overcome disadvantages mentioned above existing in the prior art, and provide a kind of rotation of underwater gate valve
Turn operation driving device, it is used not only for seabed, underwater gate valve is operated by underwater robot torque tool, solves water
The problem of lower robot torque tool can not operate underwater gate valve；Moreover, its operating process is from seawater pressure shadow
Ring, safe and reliable for underwater gate valve switching process provides technology guarantee.
The purpose of the present invention is what is realized by following technical scheme：
A kind of rotation process driving device of underwater gate valve, it is characterised in that：It is equipped with：A drive on valve (2)
Dynamic device (5), the driving device (5) include：One driver, installation switch indicating device (36) on a drive and pressure are put down
Weigh device (41), and the lower end of pressure equaliser (41) is connected with the inner cavity of driver；Wherein,
The driver is equipped with：Underwater robot moment of torsion interface (32), on underwater robot moment of torsion interface (32)
Head cover (31), the actuator housing (25) on head cover (31)；Wherein, actuator housing (25) is connected with stent (20),
Actuator housing (25) is equipped with sealing；Override axis (34), operation lever (26) and valve rod spiral shell are installed in actuator housing (25)
Female (24), override axis (34) can make operating shaft (34) realize the first bar sealed with head cover (31) with being provided with head cover (31)
Seal (35)；
Switch indicating device (36) includes：The first axle sleeve (45) on stent (20), installed in the first axle sleeve
(45) the instruction transmission shaft (47) in one end, the flange shaft sleeve (48) in the first axle sleeve (45) other end and installed in
Second bearing (46) on one axle sleeve (45) angle head cylindrical, wherein, flange shaft sleeve (48) is installed on the hole of actuator housing (25)
It is interior, the second axle sleeve (51) is installed in actuator housing (25)；Indicate that transmission shaft (47) and one end of instruction connecting rod (50) connect
Connect, the other end of instruction connecting rod (50) is installed in the second axle sleeve (51)；Indicate connecting rod (50) and actuator housing (25)
On be provided with the second bar sealing (52)；And instruction transmission shaft (47) is connected with the helicla flute (65) of instruction transmission shaft (47)；
Pressure equaliser (41) includes：Balancer casing (72), the membrane capsule in balancer casing (72)
(71), the balancer cap (70) in membrane capsule (71), wherein, it is set with bushing (69), bushing in balancer cap (70)
(69) water flowing cap (68) is set with；And balancer casing (72) is installed on actuator housing (25).
The inside of the actuator housing (25) is hollow；The sealing concrete mode of actuator housing (25) is：Driver
Sealed in housing (25) peripheral groove by the second O-ring (30)；The end of actuator housing (25) is equipped with groove, using the in groove
One O-ring (23) seals.
Several clutch shaft bearings (27) are installed on the operation lever (26), 27 fixed operation bar of clutch shaft bearing is axially moved,
So as to which operation lever can only rotate.Bearing gland (38) is installed on actuator housing (25), to fixed clutch shaft bearing
(27) axial movement；Valve stem nut (24) is installed on inside actuator housing (25) and stent (20), and with operation lever (26)
Motion thread connects, and valve stem nut (24) forms with stent (20) and is oriented to connection, by the fixed valve stem nut (24) of stent (20)
Rotary motion, valve stem nut (24) is connected with valve rod connecting pin (21) in the stent (20), the lower end of valve rod connecting pin (21)
It is connected with valve rod (4).
The stent (20) is installed on the valve deck of valve seat (1), and exterior affixed with valve (2) formation.
The inside and pressure equaliser (41) lower part of the actuator housing (25) are full of lubricating oil, when underwater gate valve quilt
When being installed to seabed, seawater enters in membrane capsule (71) from water flowing cap (68), the seawater compression lubricating oil in membrane capsule (71), from
And the pressure identical with exterior seawater is established in internal drive, meanwhile, membrane capsule (71) separates seawater and lubricating oil.
One end of the instruction connecting rod (50) is connected with indicator (63).
One indication board rack (60) is installed, indication board rack is separately installed with out instruction on (60) on the head cover (31)
(62) and pass indicates (61)；When driver works, instruction transmission shaft (47) rotates, and drives instruction connecting rod (50) and indicator
(63) rotate, the opposite position opened instruction (62) and close instruction (61) of observation indicator (63), to determine the on off state of gate valve.
Beneficial effects of the present invention：Due to the adoption of the above technical scheme, it is used not only for seabed to the present invention, makes underwater
Gate valve is operated by underwater robot torque tool, and underwater gate valve can not be operated by solving underwater robot torque tool
The problem of；Moreover, its operating process influences from seawater pressure, skill is provided for the safe and reliable of underwater gate valve switching process
Art ensures.
Brief description of the drawings
Fig. 1 is use state diagram of the present invention.
Fig. 2 is overall structure schematic cross-sectional view of the present invention.
Fig. 3 overlooks Local map for instruction device of the present invention.
Fig. 4 is present invention instruction drive shaft parts figure.
Fig. 5 is pressure equaliser schematic cross-sectional view of the present invention.
Major Symbol explanation in figure：
1. valve seat, 2. valves, 3. flashboards, 4. valve rods, 5. driving devices, 20. stents, 21. valve rod connecting pins, 22. bolts,
23. the first O-ring, 24. valve stem nuts, 25. actuator housings, 26. operation levers, 27. clutch shaft bearings, 29. screws, 30. the 2nd O
Shape circle, 31. head covers, 32. underwater robot moment of torsion interfaces, 33. bolts, 34. override axis, the sealing of 35. first bars, 36. switches refer to
Showing device, 38. bearing glands, 39. first pins, 40. second pins, 41. pressure equalisers, 42. spline pairs, 43. trapezoidal threads,
44.T type grooves, 45. first axle sleeves, 46. second bearings, 47. instruction transmission shafts, 48. flange shaft sleeves, 49. the 3rd pins, 50. instructions
Connecting rod, 51. second axle sleeves, the sealing of 52. second bars, 53. the 4th pins, 60. indication board racks, 61. close instruction, 62. open instruction,
63. indicator, 65. helicla flutes, 68. water flowing caps, 69. bushings, 70. balancer caps, 71. membrane capsules, 72. balancer casings.
Embodiment
Such as Fig. 1, shown in Fig. 2, the present invention is equipped with：An operation driving device 5 on valve 2, the driving device 5 are wrapped
Include：One driver, the switch indicating device 36 and pressure equaliser 41 of installation on a drive；Wherein,
The driver is equipped with：Underwater robot moment of torsion interface 32, by bolt 33 be installed on underwater robot moment of torsion interface
Head cover 31 on 32, the actuator housing 25 by 29 connection mode of screw on head cover 31, wherein, actuator housing 25
Sealed in peripheral groove by the second O-ring 30；Actuator housing 25 is connected with stent 20 by bolt 22, the end of actuator housing 25
Portion is equipped with groove, is sealed in groove using the first O-ring 23；Wherein, the inside of actuator housing 25 is hollow, hollow driver
Override axis 34 and operation lever 26 are installed in housing 25, override axis 34 is to be fastened on by the first pin 39 in the hole of operation lever 26,
34 peripheral groove of override axis is provided with the first bar sealing 35 with 31 endoporus of head cover, and several clutch shaft bearings 27 are provided with operation lever 26
(clutch shaft bearing 27 of the present embodiment is two), two 27 fixed operation bars of clutch shaft bearing are axially moved, so that operation lever can only
Rotate.Bearing gland 38 is installed in the threaded hole of 25 upper end of actuator housing, passes through screw thread and actuator housing 25
Connection, to the axial movement of fixed clutch shaft bearing 27；Valve stem nut 24 is installed on inside actuator housing 25 and stent 20, valve
Stem nut 24 is connected by trapezoidal thread 43 with operation lever 26, and valve stem nut 24 is formed by key with stent 20 and is oriented to connection, and
The rotary motion of valve stem nut 24 is fixed by stent 20, valve stem nut 24 passes through T-slot 44 and valve rod connecting pin in stent 20
21 connections, the lower end internal thread of valve rod connecting pin 21 are connected with 4 external screw thread of valve rod.
Above-mentioned stent 20 is installed on the valve deck of valve seat 1, and forms external connection with valve 2, and by flange bolt fastening.
When driver works, underwater robot torque tool is injected into the underwater robot moment of torsion interface 32 in driving device
It is interior.Underwater robot torque tool drives override axis 34 to rotate, so that drive operation lever 26 to rotate, two 27 fixed operations of bearing
Bar is axially moved.Stent 20 and valve stem nut 24 form spline pair 42, make valve stem nut 24 only can be for linear motion.So that behaviour
Make 26 rotary motion of bar, and valve stem nut 24 is converted into 24 trapezoidal thread of valve stem nut by operation lever 26 and is moved along a straight line；Valve
Stem nut 24 pushes or pulls on valve rod connecting pin 21 and moves along a straight line vertically with ovable valve stem 4, so as to drive flashboard 3 to move, realizes gate valve
Opening and closing.
Switch indicating device 36 includes：Using shaft hole matching mode be installed on 20 end-face hole of stent in the first axle sleeve 45,
Instruction transmission shaft 47 in 45 one end of the first axle sleeve, the flange shaft sleeve 48 in 45 other end of the first axle sleeve, peace
Second bearing 46 on 45 angle head cylindrical of the first axle sleeve, wherein, flange shaft sleeve 48 is installed in 25 hole of actuator housing, is driven
Second axle sleeve 51 is installed in dynamic device housing 25；Indicate in the hole of transmission shaft 47 by the first pin 49 with indicating the one of connecting rod 50
End connection, the other end of instruction connecting rod 50 are installed in the second axle sleeve 51；Indicate the peripheral groove and drive shell of connecting rod 50
25 endoporus of body is provided with the second bar sealing 52；And pass through the spiral shell of the second pin 40 and instruction transmission shaft 47 in the hole of instruction transmission shaft 47
Spin slot 65 is connected.
One end of above-mentioned instruction connecting rod 50 is connected with indicator 63 by the 4th pin 53.
An indication board rack 60 is provided with using welding manner on above-mentioned head cover 31, is separately installed with indication board rack 60
Open instruction 62 and close instruction 61.When driver works, instruction is driven to pass by the second pin 40 on instruction transmission shaft 47
Helicla flute on moving axis 47 so that instruction transmission shaft 47 rotates, and drives instruction connecting rod 50 and indicator 63 to rotate, and observation refers to
Show the opposite position opened instruction 62 and close instruction 61 of pin 63, to determine the on off state of gate valve.
Pressure equaliser 41 includes：Balancer casing 72, the membrane capsule (71) in balancer casing 72, installation
Balancer cap 70 in membrane capsule (71), wherein, bushing 69 is set with balancer cap 70, water flowing cap is set with bushing 69
68.Pressure equaliser 41 is by being threadably mounted on actuator housing 25 positioned at 72 lower end of balancer casing, and pressure is put down
The lower end of weighing apparatus device 41 is connected with the inner cavity of driver；The inside and 41 lower part of pressure equaliser of actuator housing 25 are full of profit
Lubricating oil.When underwater gate valve is mounted to seabed, seawater enters in membrane capsule 71 from water flowing cap 68, the seawater pressure in membrane capsule 71
Contracting lubricating oil, thus internal drive establish with the identical pressure of outside seawater, meanwhile, membrane capsule 71 is by seawater and lubricating oil
Separate.
Above-mentioned bearing is the prior art, and the technology of not specified (NS) is the prior art, and so it will not be repeated.
The above described is only a preferred embodiment of the present invention, not make limitation in any form to the present invention, it is all
It is any simple modification, equivalent change and modification made according to the technical spirit of the present invention to above example, still falls within
In the range of technical solution of the present invention.
Claims (7)
- A kind of 1. rotation process driving device of underwater gate valve, it is characterised in that：It is equipped with：A driving on valve (2) Device (5), the driving device (5) include：One driver, installation switch indicating device (36) on a drive and pressure balance Device (41), and the lower end of pressure equaliser (41) is connected with the inner cavity of driver；Wherein,The driver is equipped with：Underwater robot moment of torsion interface (32), the head cover on underwater robot moment of torsion interface (32) (31), the actuator housing (25) on head cover (31)；Wherein, actuator housing (25) is connected with stent (20), driving Device housing (25) is equipped with sealing；Override axis (34), operation lever (26) and valve stem nut are installed in actuator housing (25) (24), override axis (34) can make operating shaft (34) realize that the first bar of sealing is close with head cover (31) with being provided with head cover (31) Seal (35)；Switch indicating device (36) includes：The first axle sleeve (45) on stent (20), installed in the first axle sleeve (45) one Instruction transmission shaft (47) in end, the flange shaft sleeve (48) in the first axle sleeve (45) other end and installed in the first axle sleeve (45) second bearing on angle head cylindrical (46), wherein, flange shaft sleeve (48) is installed in the hole of actuator housing (25), driving The second axle sleeve (51) is installed in device housing (25)；Indicate that transmission shaft (47) and one end of instruction connecting rod (50) are connected, indicate The other end of connecting rod (50) is installed in the second axle sleeve (51)；Indicate connecting rod (50) with being provided with actuator housing (25) Second bar seals (52)；And instruction transmission shaft (47) is connected with the helicla flute (65) of instruction transmission shaft (47)；Pressure equaliser (41) includes：Balancer casing (72), the membrane capsule (71) in balancer casing (72), peace Balancer cap (70) in membrane capsule (71), wherein, it is set with bushing (69), bushing (69) inner sleeve in balancer cap (70) Equipped with water flowing cap (68)；And balancer casing (72) is installed on actuator housing (25)；Valve stem nut (24) is installed on actuator housing (25) and stent (20) is internal, and connects with operation lever (26) motion thread Connect, and valve stem nut (24) forms with stent (20) and is oriented to connection, and the rotary motion of valve stem nut (24) is fixed by stent (20), Valve stem nut (24) is connected in stent (20) with valve rod connecting pin (21), and lower end and the valve rod (4) of valve rod connecting pin (21) connect Connect.
- 2. the rotation process driving device of underwater gate valve according to claim 1, it is characterised in that：The actuator housing (25) inside is hollow；The sealing concrete mode of actuator housing (25) is：By the 2nd O in actuator housing (25) peripheral groove Shape circle (30) seals；The end of actuator housing (25) is equipped with groove, is sealed in groove using the first O-ring (23).
- 3. the rotation process driving device of underwater gate valve according to claim 1, it is characterised in that：The operation lever (26) On several clutch shaft bearings (27) are installed, clutch shaft bearing (27) fixed operation bar is axially moved, and is rotated so that operation lever can only be done Movement；Bearing gland (38) is installed on actuator housing (25), to the axial movement of fixed clutch shaft bearing (27).
- 4. the rotation process driving device of underwater gate valve according to claim 1, it is characterised in that：Stent (20) peace On the valve deck of valve seat (1), and it is exterior affixed with valve (2) formation.
- 5. the rotation process driving device of underwater gate valve according to claim 1, it is characterised in that：The actuator housing (25) inside and pressure equaliser (41) lower part is full of lubricating oil, and when underwater gate valve is mounted to seabed, seawater is from logical Water cap (68) enters in membrane capsule (71), seawater in membrane capsule (71) compression lubricating oil, thus internal drive establish with The identical pressure of exterior seawater, meanwhile, membrane capsule (71) separates seawater and lubricating oil.
- 6. the rotation process driving device of underwater gate valve according to claim 1, it is characterised in that：The instruction connecting rod (50) one end is connected with indicator (63).
- 7. the rotation process driving device of underwater gate valve according to claim 1, it is characterised in that：On the head cover (31) One indication board rack (60) is installed, instruction (62) is separately installed with out on indication board rack (60) and closes instruction (61)；Driving When device works, instruction transmission shaft (47) rotates, and drives instruction connecting rod (50) and indicator (63) to rotate, and observes indicator (63) the opposite position opened instruction (62) and close instruction (61), to determine the on off state of gate valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510828622.8A CN105333194B (en) | 2015-11-25 | 2015-11-25 | The rotation process driving device of underwater gate valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510828622.8A CN105333194B (en) | 2015-11-25 | 2015-11-25 | The rotation process driving device of underwater gate valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105333194A CN105333194A (en) | 2016-02-17 |
| CN105333194B true CN105333194B (en) | 2018-04-20 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510828622.8A Active CN105333194B (en) | 2015-11-25 | 2015-11-25 | The rotation process driving device of underwater gate valve |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105626869A (en) * | 2016-02-29 | 2016-06-01 | 苏州纽威阀门股份有限公司 | Sealing structure and gate valve with sealing structure |
| CN106217398B (en) * | 2016-08-25 | 2019-01-08 | 杭州宇控机电工程有限公司 | A kind of torque tool |
| CN109433522A (en) * | 2018-12-06 | 2019-03-08 | 汽-大众汽车有限公司 | A kind of liquid supplying apparatus and its operating method |
| CN109578663B (en) * | 2019-01-28 | 2024-03-26 | 深圳中科捷飞科技有限公司 | Operating device for densely mounting valves |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5269343A (en) * | 1992-04-10 | 1993-12-14 | Elkhart Brass Mfg. Co., Inc. | Valve actuator |
| CN103411025A (en) * | 2013-08-23 | 2013-11-27 | 中国海洋石油总公司 | Visual position indicator for hydraulic actuating mechanism of deep water gate valve |
| CN203322452U (en) * | 2013-05-24 | 2013-12-04 | 重庆前卫海洋石油工程设备有限责任公司 | Actuator for underwater valve |
| CN104100755A (en) * | 2014-07-18 | 2014-10-15 | 中国海洋石油总公司 | Underwater valve actuating mechanism |
| CN204647513U (en) * | 2015-05-29 | 2015-09-16 | 上海神开石油化工装备股份有限公司 | A kind of pressure equaliser for underwater valve gate driver |
-
2015
- 2015-11-25 CN CN201510828622.8A patent/CN105333194B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5269343A (en) * | 1992-04-10 | 1993-12-14 | Elkhart Brass Mfg. Co., Inc. | Valve actuator |
| CN203322452U (en) * | 2013-05-24 | 2013-12-04 | 重庆前卫海洋石油工程设备有限责任公司 | Actuator for underwater valve |
| CN103411025A (en) * | 2013-08-23 | 2013-11-27 | 中国海洋石油总公司 | Visual position indicator for hydraulic actuating mechanism of deep water gate valve |
| CN104100755A (en) * | 2014-07-18 | 2014-10-15 | 中国海洋石油总公司 | Underwater valve actuating mechanism |
| CN204647513U (en) * | 2015-05-29 | 2015-09-16 | 上海神开石油化工装备股份有限公司 | A kind of pressure equaliser for underwater valve gate driver |
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| Publication number | Publication date |
|---|---|
| CN105333194A (en) | 2016-02-17 |
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Address after: 100010 Chaoyangmen North Street, Dongcheng District, Dongcheng District, Beijing Co-patentee after: Offshore Oil Engineering Co., Ltd. Patentee after: China Offshore Oil Group Co., Ltd. Co-patentee after: Neway Valve (Suzhou) Co., Ltd. Address before: 100010 Chaoyangmen North Street, Dongcheng District, Dongcheng District, Beijing Co-patentee before: Offshore Oil Engineering Co., Ltd. Patentee before: China National Offshore Oil Corporation Co-patentee before: Neway Valve (Suzhou) Co., Ltd. |
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| CP01 | Change in the name or title of a patent holder |