CN110336242A - Jumper cable quickly connects and urgent disengaging gear between a kind of ocean platform - Google Patents
Jumper cable quickly connects and urgent disengaging gear between a kind of ocean platform Download PDFInfo
- Publication number
- CN110336242A CN110336242A CN201910566434.0A CN201910566434A CN110336242A CN 110336242 A CN110336242 A CN 110336242A CN 201910566434 A CN201910566434 A CN 201910566434A CN 110336242 A CN110336242 A CN 110336242A
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- China
- Prior art keywords
- grip block
- connecting rod
- connecting flange
- flange
- connect
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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
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G15/00—Cable fittings
- H02G15/08—Cable junctions
- H02G15/10—Cable junctions protected by boxes, e.g. by distribution, connection or junction boxes
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- Earth Drilling (AREA)
Abstract
It is quickly connected the invention discloses jumper cable between a kind of ocean platform and urgent disengaging gear, including the upper connecting flange and lower connecting flange connected by multiple grip blocks, upper connecting flange and lower connecting flange are coaxially disposed up and down, lower connecting flange is provided with jumper hose flange connecting hole, it further include the energy storage means to link together and oil cylinder, energy storage means, oil cylinder is connect with grip block respectively, it is connected between per adjacent two grip block, lifting bolt is provided on grip block, theft-resistant link chain assembly is provided on upper connecting flange, theft-resistant link chain assembly is connect with lifting bolt.Cable is quickly connected and is promptly disengaged time-consuming, laborious between the present invention solves the problems, such as existing ocean platform.
Description
Technical field
The invention belongs to offshore oil machinery technical field, it is related to jumper cable between a kind of ocean platform and quickly connects and tight
Anxious disengaging gear.
Background technique
Jumper cable between ocean platform is the important pipeline of marine drilling operation.Supporting platform aided drilling operation mould
In formula, be mainly responsible for from support platform to wellhead platform transmit drillng operation needed for whole power, control signal, slush pump,
Fresh water, seawater, compressed air, drilling mud etc..In conventional marine drilling work pattern, it is mainly responsible for from support ship to drilling well
Platform transmits the routine replenishments such as cementing concrete, barite, fuel oil, fresh water.
It is with the connection type of jumper cable between existing ocean platform: is attached by flange and bolt, the type
Connection type it is many and diverse, consuming time is long.When the sea situation in platform operations sea area changes suddenly, or because other cause specifics need
Jumper cable between platform is promptly disengaged, when guaranteeing platform inherently safe, urgent disengage is not able to satisfy and requires.Once across
Wiring cable can not disengage in time, this will cause great property loss for ocean platform, or even platform is caused to stop production.
Summary of the invention
It quickly connects and urgent disengaging gear, solves the object of the present invention is to provide jumper cable between a kind of ocean platform
Cable quickly connects and promptly disengages time-consuming, laborious problem between existing ocean platform.
The technical scheme adopted by the invention is that jumper cable quickly connects between a kind of ocean platform and urgent disengage fills
It sets, including the upper connecting flange that is connected by multiple grip blocks and lower connecting flange, above and below upper connecting flange and lower connecting flange
Coaxial arrangement, it further includes the energy storage means to link together and oil that lower connecting flange, which is connected with jumper hose flange bolt,
Cylinder, energy storage means, oil cylinder are connect with grip block respectively, and lifting bolt is provided on grip block, is arranged on upper connecting flange
There is theft-resistant link chain assembly, theft-resistant link chain assembly is connect with lifting bolt.
The features of the present invention also characterized in that
There are four grip block is arranged altogether, four grip blocks are uniformly distributed on the same circumference, and connecting rod passes through pin shaft and clamping
Block connection, four grip blocks are distributed successively according to counterclockwise are as follows: grip block I, grip block II, grip block III and grip block IV remove
Connecting rod is connected with outside grip block III and grip block IV between adjacent two grip block, grip block III passes through connecting rod III and accumulator
Part connection, grip block IV are connect by the overhead cam connecting rod and lower cam connecting rod for being located at same vertical direction with energy storage means, folder
It holds block IV and passes through pin shaft with overhead cam connecting rod, lower cam connecting rod and connect, overhead cam connecting rod, lower cam connecting rod and grip block IV
Connecting pin is cam-like, connecting rod III is offered in the middle part of grip block IV across slot, grip block I passes through oil cylinder ear mount and oil cylinder tail end
Connection, the tailpiece of the piston rod of oil cylinder are connect with energy storage means by pin shaft.
There are four the settings of theft-resistant link chain assembly, and four theft-resistant link chain assembly positions are corresponded with four grip blocks, and theft-resistant link chain is total
At including that one end is fixed on the support rod on upper connecting flange, the support rod other end is connected with theft-resistant link chain, theft-resistant link chain and hanging ring spiral shell
Nail connection.
Energy storage means include the connection being connect respectively by pin shaft with overhead cam connecting rod, lower cam connecting rod, oil cylinder piston end
, pedestal is provided on attachment base, energy storage means shell has been bolted in pedestal, and pedestal and energy storage means shell form chamber
Body, III one end of connecting rod are connect by pin shaft with grip block III, and III other end of connecting rod passes through attachment base, pedestal protrudes into pedestal and accumulation of energy
In the cavity that device shell is formed, pedestal is located on the shoulder of connecting rod III, and the portion outboard that connecting rod III is located in cavity is arranged with
Butterfly spring, butterfly spring top are provided with bottom plate, and III other end end of connecting rod is provided with slotted nut, and bottom plate is located at fluting spiral shell
Between female and butterfly spring.
There are two slotted nut settings, is provided with check washer between two slotted nuts.
Clamping face between grip block and upper connecting flange, lower connecting flange all has angle of friction α, and 0 ° of 90 ° of < α <.
The contact surface of upper connecting flange and lower connecting flange offers the first seal groove, and lower connecting flange bottom surface offers the
Two seal grooves, the first seal groove and the second seal groove are provided with sealing ring.
The contact surface edge of upper connecting flange and lower connecting flange is convex shape, lower connecting flange shape and upper connecting flange
Standing shape is adapted, and upper connecting flange and lower connecting flange are coaxial.
The beneficial effects of the present invention are:
Jumper cable quickly connects and urgent disengaging gear between a kind of ocean platform of the present invention, and adaptable, structure is simple,
Installation maintenance and easy to operate, connection and to disengage action response fast；The angle design of the conical surface, ensure that on the inside of the grip block of use
Grip block is in connected state, contact surface can generate enough frictional force and be formed self-locking with upper and lower connecting flange；Separately
Outside, oil cylinder, connecting rod, grip block, energy storage equipment and the grip block in the device, that pin shaft realizes the device is integrally self-locking and local
It is self-locking, the stability and reliability of device entirety is greatly improved；The present invention is realized in upper and lower connection method using oil cylinder
Orchid connection and automatic control when disengaging, avoid when jumper cable between complicated sea situation lower platform promptly disengages and need personnel on site
The danger of operation.
Detailed description of the invention
Fig. 1 is that jumper cable quickly connect and the urgent top view of disengaging gear between a kind of ocean platform of the present invention；
Fig. 2 be in Fig. 1 A-A to sectional view；
Fig. 3 be between a kind of ocean platform of the present invention jumper cable quickly connect and promptly in disengaging gear grip block IV knot
Structure schematic diagram；
Fig. 4 be between a kind of ocean platform of the present invention jumper cable quickly connect and promptly in disengaging gear energy storage means knot
Structure schematic diagram；
Fig. 5 be between a kind of ocean platform of the present invention jumper cable quickly connect and urgent disengaging gear in upper connecting flange with
Status diagram when lower connecting flange disengages.
In figure, connecting flange on 1., 2. lower connecting flanges, 3. jumper hose flange bolts, 4. energy storage means, 5. oil
Cylinder, 6. lifting bolts, 7. connecting rods, 8. grip blocks I, 9. grip blocks II, 10. grip blocks III, 11. grip blocks IV, 12. connecting rods III,
13. oil cylinder ear mount, 14. support rods, 15. theft-resistant link chains, 16. attachment bases, 17. pedestals, 18. energy storage means shells, 19. butterfly bullets
Spring, 20. bottom plates, 21. slotted nuts, 22. check washers, 23. first seal grooves, 24. second seal grooves, 25. lower cam connecting rods,
26. overhead cam connecting rod.
Specific embodiment
The following describes the present invention in detail with reference to the accompanying drawings and specific embodiments.
Jumper cable quickly connect and urgent disengaging gear between a kind of ocean platform of the present invention, as shown in Figs. 1-2, including leads to
The upper connecting flange 1 and lower connecting flange 2 of multiple grip block connections are crossed, upper connecting flange 1 is coaxially set with lower about 2 connecting flange
It sets, the clamping face between grip block and upper connecting flange 1, lower connecting flange 2 all has angle of friction α, and 0 ° of 90 ° of < α <, lower company
Acting flange 2 is connected with jumper hose flange bolt 3 by jumper hose flange connecting hole, for connecting ocean platform span
Wiring cable, upper 1 top of connecting flange further include the energy storage means 4 to link together and oil for connecting with offshore platform structure
Cylinder 5, energy storage means 4, oil cylinder 5 are connect with grip block respectively, are provided with lifting bolt 6 on grip block, on upper connecting flange 1
It is provided with theft-resistant link chain assembly, theft-resistant link chain assembly is connect with lifting bolt 6.
The contact surface of upper connecting flange 1 and lower connecting flange 2 offers the first seal groove 23, and lower 2 bottom surface of connecting flange is opened
Equipped with the second seal groove 24, the first seal groove 23 and the second seal groove 24 are provided with sealing ring, with guarantee to connect between flange
The contact surface edge of leakproofness, upper connecting flange 1 and lower connecting flange 2 is convex shape, lower 2 shape of connecting flange and upper connection method
Blue 1 standing shape is adapted, to guarantee that upper connecting flange 1 and lower connecting flange 2 are coaxial.
There are four grip block is arranged altogether, four grip blocks are uniformly distributed on the same circumference, and connecting rod 7 passes through pin shaft and clamping
Block connection, four grip blocks are distributed successively according to counterclockwise are as follows: grip block I 8, grip block II 9, grip block III 10 and grip block IV
11, connecting rod 7 is connected between adjacent two grip block in addition to grip block III 10 and grip block IV 11, grip block III 10 passes through connecting rod III
12 connect with energy storage means 4, grip block IV 11 by be located at the overhead cam connecting rod 26 of same vertical direction, lower cam connecting rod 25 with
Energy storage means 4 connect, and grip block IV 11 is connect by pin shaft with overhead cam connecting rod 26, lower cam connecting rod 25, overhead cam connecting rod
26, the connecting pin of lower cam connecting rod 25 and grip block IV 11 is cam-like, and when the piston rod of oil cylinder 5 is shunk, overhead cam connects
Bar 26 and lower cam connecting rod 25 can pass through connecting rod 7 and connecting rod III12 and four aid blocks, oil cylinder 5, energy storage means 4, upper connection
Flange 1, lower connecting flange 2 formed it is self-locking, as shown in figure 3, the middle part of grip block IV 11 offers connecting rod III across slot, grip block I 8
It is connect by oil cylinder ear mount 13 with 5 tail end of oil cylinder, the tailpiece of the piston rod of oil cylinder 5 is connect with energy storage means 4 by pin shaft.
There are four the settings of theft-resistant link chain assembly, and four theft-resistant link chain assembly positions are corresponded with four grip blocks, and theft-resistant link chain is total
At including that one end is fixed on the support rod 14 on upper connecting flange 1,14 other end of support rod is connected with theft-resistant link chain 15, theft-resistant link chain 15
It is connect with lifting bolt 6.
As shown in figure 4, energy storage means 4 include respectively by pin shaft and overhead cam connecting rod 26, lower cam connecting rod 25, oil cylinder 5
The attachment base 16 of piston end connection, is provided with pedestal 17 on attachment base 16, energy storage means shell has been bolted in pedestal 17
18, pedestal 17 and energy storage means shell 18 form cavity, and III 12 one end of connecting rod is connect by pin shaft with grip block III 10, connecting rod III
In the cavity that 12 other ends pass through attachment base 16, pedestal 17 protrudes into pedestal 17 and energy storage means shell 18 is formed, pedestal 17 is located at
On the shoulder of connecting rod III 12, the portion outboard that connecting rod III 12 is located in cavity is arranged with butterfly spring 19, the shoulder of connecting rod III 12
For limiting to guarantee that butterfly spring 19 is able to maintain the state of being compacted, 19 top of butterfly spring is provided with bottom plate 20, connecting rod III
The setting of 12 other end ends is provided with check washer 22 there are two slotted nut 21 between two slotted nuts 21, and bottom plate 20
Between slotted nut 21 and butterfly spring 19.
Jumper cable quickly connects between a kind of ocean platform of the present invention and the course of work of urgent disengaging gear is specific as follows:
1) normal connection procedure is withdrawn by the piston rod of HYDRAULIC CONTROL SYSTEM oil cylinder 5, grip block I 8, grip block II 9,
Grip block III 10, grip block IV 11 move closer to, and upper connecting flange 1 and lower connecting flange 2 are linked together.The work of oil cylinder 5
In contraction process, connecting rod III 12 will be rotated counterclockwise stopper rod centered on the pin shaft that it connect with grip block III 10, gradually be got over
Cross the pin shaft center that grip block IV 11 is connect with overhead cam connecting rod 26, lower cam connecting rod 25；Overhead cam connecting rod 26, lower cam connecting rod
25 will be rotated counterclockwise centered on connecting its pin shaft with grip block IV 11；At the same time, the butterfly bullet inside energy storage means 4
Pressure suffered by spring 19 is connect in arrival grip block IV 11 with overhead cam connecting rod 26, lower cam connecting rod 25 by connecting rod III 12
Pin shaft becomes larger during center, changes into and is gradually reduced when crossing the center, but butterfly spring 19 was acted entirely
Always confined state is in journey.
As shown in Figure 1, after the piston rod of oil cylinder 5 is withdrawn completely, connecting rod III 12 fully pass over grip block IV 11 with it is convex
Take turns connecting rod 26, the pin shaft center that lower cam connecting rod 25 connects, butterfly spring 19 is due to being in compressive state, it will makes connecting rod III 12
The movement tendency rotated counterclockwise centered on having the pin shaft connecting by it with grip block III 10；Overhead cam connecting rod 26, lower cam connect
Bar 25 has the movement rotated counterclockwise centered on the pin shaft that grip block IV 11 is connect with overhead cam connecting rod 26, lower cam connecting rod 25
Trend.Overhead cam connecting rod 26, lower cam connecting rod 25 and IV 11 connecting pin external form of grip block are cam structure, when III 12 inverse time of connecting rod
When needle rotates, overhead cam connecting rod 26 and the also rotation counterclockwise simultaneously of lower cam connecting rod 25, overhead cam connecting rod 26, lower cam connecting rod 25
Cam structure will gradually cross cam structure latching point formed it is self-locking；Meanwhile connecting rod III 12 also with connecting rod 7, pin shaft, clamping
The structures such as block, oil cylinder 5 form self-locking.Since oil cylinder 5 is withdrawn completely, connecting rod III 12 crosses overhead cam connecting rod 26, lower cam connecting rod
The 25 pin shaft centers being connect with grip block IV 11, butterfly spring 19 generate compression generate elastic force will so that whole system have after
The continuous trend withdrawn overcomes the movement for continuing to withdraw, entirely since upper connecting flange 1, lower connecting flange 2 are stepped up by aid block
System does not reoperate, and reaches equilibrium state, the connection of connecting flange 1 and lower connecting flange 2 in realization.After reaching equilibrium state,
Butterfly spring 19 is in pressured state always.
2) after the completion of connecting flange 1 and lower connecting flange 2 connect on, 1 clamping face of upper connecting flange of grip block, lower connection
2 clamping face of flange with upper connecting flange 1,2 contact squeeze of lower connecting flange, generates enough frictional force, due to angle of friction α respectively
Presence, not will receive generated because of the weight of the jumper cable of lower 2 underhung of connecting flange sliding, disengage phenomenon.
3) as shown in figure 5, when needing Quick release, the stretching of 5 piston rod of oil cylinder is realized by hydraulic system, the company of promotion
Bar III 12 is rotated clockwise centered on the pin shaft that it connect with grip block III 10, and oil cylinder 5 overcomes the butterfly bullet in energy storage means 4
Spring 19 deforms, and connecting rod III 12 crosses the centre bit for the pin shaft that grip block IV 11 is connect with overhead cam connecting rod 26, lower cam connecting rod 25
It sets；At the same time, overhead cam connecting rod 26, lower cam connecting rod 25 are revolved clockwise centered on connecting its pin shaft with grip block IV 11
The self-lock force for turning, while overhead cam connecting rod 26,25 cam structure of lower cam connecting rod being overcome to generate, makes the equilibrium state of entire mechanism
Be broken, grip block I 8, grip block II 9, grip block III 10, grip block IV 11 with the stretching of 5 piston rod of oil cylinder it is gradually outside
Opening movement, lower connecting flange 2 voluntarily disengage under the effect of gravity, and connecting flange 1 and the rapid of lower connecting flange 2 take off in realization
It opens.
Since jumper cable quickly connects between a kind of ocean platform of the present invention and the operation of urgent disengaging gear is by hydraulic pressure system
System remote operation is realized, the joint efficiency of connecting flange 1 and lower connecting flange 2 is improved；It also avoids in complicated, severe sea
It needs personnel to be manually operated when promptly disengaging under condition and generates dangerous hidden danger.It is self-locking with part that the arrangement achieves whole simultaneously,
Improve the reliability of device entirety.The angle of friction of grip block clamping face ensure that between connecting flange 1 and lower connecting flange 2 easily
In disengagement, while enough frictional force can be generated in the clamp state and is not slided.To operator's safety is guaranteed, improve
Working efficiency, live emergency processing have good realistic meaning.
Claims (8)
1. jumper cable quickly connects and urgent disengaging gear between a kind of ocean platform, which is characterized in that including passing through multiple folders
Hold block connection upper connecting flange (1) and lower connecting flange (2), on the upper connecting flange (1) and lower connecting flange (2) similarly hereinafter
Axis setting, it further includes the energy storage means to link together that the lower connecting flange (2), which is provided with jumper hose flange connecting hole,
(4) it is connect respectively with grip block with oil cylinder (5), the energy storage means (4), oil cylinder (5), is provided with and hangs on the grip block
Ring screw (6) is provided with theft-resistant link chain assembly on the upper connecting flange (1), and the theft-resistant link chain assembly and lifting bolt (6) are even
It connects.
2. jumper cable quickly connects and urgent disengaging gear between a kind of ocean platform according to claim 1, feature
It is, there are four the grip block is arranged altogether, four grip blocks are uniformly distributed on the same circumference, and the connecting rod (7) is logical
Pin shaft is crossed to connect with grip block, four grip blocks according to distribution counterclockwise successively are as follows: grip block I (8), grip block II (9),
Grip block III (10) and grip block IV (11), in addition to grip block III (10) and grip block IV (11) between adjacent two grip block
It is connected with connecting rod (7), the grip block III (10) is connect by connecting rod III (12) with energy storage means (4), the grip block IV
(11) it is connect by the overhead cam connecting rod (26) and lower cam connecting rod (25) that are located at same vertical direction with energy storage means (4), institute
It states grip block IV (11) to connect by pin shaft with overhead cam connecting rod (26), lower cam connecting rod (25), the overhead cam connecting rod
(26), the connecting pin of lower cam connecting rod (25) and grip block IV (11) is cam-like, is opened up in the middle part of the grip block IV (11)
There is connecting rod III to pass through slot, the grip block I (8) is connect by oil cylinder ear mount (13) with oil cylinder (5) tail end, the oil cylinder (5)
Tailpiece of the piston rod is connect with energy storage means (4) by pin shaft.
3. jumper cable quickly connects and urgent disengaging gear between a kind of ocean platform according to claim 2, feature
It is, there are four the theft-resistant link chain assembly settings, and four theft-resistant link chain assembly positions are corresponded with four grip blocks, described
Theft-resistant link chain assembly includes the support rod (14) that one end is fixed on connecting flange (1), support rod (14) other end connection
Have theft-resistant link chain (15), the theft-resistant link chain (15) connect with lifting bolt (6).
4. jumper cable quickly connects and urgent disengaging gear between a kind of ocean platform according to claim 2, feature
It is, the energy storage means (4) include being lived respectively by pin shaft and overhead cam connecting rod (26), lower cam connecting rod (25), oil cylinder (5)
The attachment base (16) of end connection is filled in, is provided with pedestal (17) on the attachment base (16), the pedestal (17) is bolted
Have energy storage means shell (18), the pedestal (17) and energy storage means shell (18) form cavity, described connecting rod III (12) one end
It is connect by pin shaft with grip block III (10), connecting rod III (12) other end passes through attachment base (16), pedestal (17) protrudes into bottom
In the cavity that seat (17) and energy storage means shell (18) are formed, the pedestal (17) is located on the shoulder of connecting rod III (12), described
The portion outboard that connecting rod III (12) is located in cavity is arranged with butterfly spring (19), and butterfly spring (19) top is provided with bottom
Plate (20), connecting rod III (12) other end end are provided with slotted nut (21), and the bottom plate (20) is located at slotted nut
(21) between butterfly spring (19).
5. jumper cable quickly connects and urgent disengaging gear between a kind of ocean platform according to claim 2, feature
It is, there are two slotted nut (21) settings, is provided with check washer (22) between two slotted nuts (21).
6. jumper cable quickly connects and urgent disengaging gear between a kind of ocean platform according to claim 1, feature
It is, the clamping face between the grip block and upper connecting flange (1), lower connecting flange (2) all has angle of friction α, and 0 ° of < α
90 ° of <.
7. jumper cable quickly connects and urgent disengaging gear between a kind of ocean platform according to claim 1, feature
It is, the contact surface of the upper connecting flange (1) and lower connecting flange (2) offers the first seal groove (23), the lower connection
Flange (2) bottom surface offers the second seal groove (24), and first seal groove (23) and the second seal groove (24) are provided with close
Seal.
8. jumper cable quickly connects and urgent disengaging gear between a kind of ocean platform according to claim 1, feature
It is, the contact surface edge of the upper connecting flange (1) and lower connecting flange (2) is convex shape, lower connecting flange (2) shape
Shape and upper connecting flange (1) standing shape are adapted, and the upper connecting flange (1) and lower connecting flange (2) are coaxial.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910566434.0A CN110336242B (en) | 2019-06-27 | 2019-06-27 | Cross-connection cable quick connection and emergency disconnection device between ocean platforms |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910566434.0A CN110336242B (en) | 2019-06-27 | 2019-06-27 | Cross-connection cable quick connection and emergency disconnection device between ocean platforms |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110336242A true CN110336242A (en) | 2019-10-15 |
| CN110336242B CN110336242B (en) | 2020-11-13 |
Family
ID=68143579
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910566434.0A Active CN110336242B (en) | 2019-06-27 | 2019-06-27 | Cross-connection cable quick connection and emergency disconnection device between ocean platforms |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110336242B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113074287A (en) * | 2020-01-06 | 2021-07-06 | 中国石油大学(华东) | Novel shuttle tanker stern receive hydraulic fluid port emergency trip device |
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| CN106002403A (en) * | 2016-07-01 | 2016-10-12 | 长春市兴奥机械设备有限责任公司 | Vertical clamp |
| CN109291009A (en) * | 2018-10-27 | 2019-02-01 | 中国海洋石油集团有限公司 | A kind of underwater flange quick connector |
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|---|---|---|---|---|
| JP2008528296A (en) * | 2005-02-02 | 2008-07-31 | エル ザウアー，マーク | Can bottom molding assembly |
| CN201679791U (en) * | 2009-09-18 | 2010-12-22 | 长沙正忠科技发展有限公司 | Oil cylinder with controllable mechanical output force |
| CN203526933U (en) * | 2013-10-24 | 2014-04-09 | 上海瑞纽机械装备制造有限公司 | Torque-adjustable oil cylinder wrenching device for wrenching oil cylinder threaded connection structure |
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| CN113074287A (en) * | 2020-01-06 | 2021-07-06 | 中国石油大学(华东) | Novel shuttle tanker stern receive hydraulic fluid port emergency trip device |
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| Publication number | Publication date |
|---|---|
| CN110336242B (en) | 2020-11-13 |
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Effective date of registration: 20200927 Address after: Baoji City, Shaanxi Province, 721002 Dongfeng Road, Jintai District No. 2 Applicant after: Baoji Oilfield Machinery Co.,Ltd. Applicant after: CHINA NATIONAL PETROLEUM Corp. Applicant after: CNPC national oil and gas drilling equipment Engineering Technology Research Center Co., Ltd Address before: Baoji City, Shaanxi Province, 721002 Dongfeng Road, Jintai District No. 2 Applicant before: Baoji Oilfield Machinery Co.,Ltd. |
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