CN103775736A - Plugging device for no stoppage of transmission of underwater oil transmission pipelines under pressure and hole- forming plugging device - Google Patents
Plugging device for no stoppage of transmission of underwater oil transmission pipelines under pressure and hole- forming plugging device Download PDFInfo
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- CN103775736A CN103775736A CN201410017963.2A CN201410017963A CN103775736A CN 103775736 A CN103775736 A CN 103775736A CN 201410017963 A CN201410017963 A CN 201410017963A CN 103775736 A CN103775736 A CN 103775736A
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- plug
- pipeline
- plugging
- rolling wheel
- main body
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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
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L1/00—Laying or reclaiming pipes; Repairing or joining pipes on or under water
- F16L1/26—Repairing or joining pipes on or under water
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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
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/18—Appliances for use in repairing pipes
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pipe Accessories (AREA)
Abstract
The invention discloses a plugging device for no stoppage of transmission of underwater oil transmission pipelines under pressure. The plugging device comprises a main machine of a plugging machine, wherein the main machine of the plugging machine is used for outputting propelling movement; the propelling-movement output end of the main machine of the plugging machine is connected with a plug bracket; a plug is rotatably connected onto the plug bracket by a rotary connecting device and can rotate to the position vertical to the plug bracket by surrounding a rotary shaft of the rotary connecting device; the plug is provided with a plug end matched with the shape of an inner hole of the oil transmission pipeline; the plug end is provided with a roller bracket; the roller bracket is rotatably connected with a guide wheel by a rotary shaft of the roller bracket; the included angle between the connecting line from the rotation center of the rotary connecting device to the rotation center of the rotary shaft of the roller bracket and the horizontal direction is an acute angle. The plugging device disclosed by the invention has the advantages that the fixing is reliable, so that the effectiveness of plugging is guaranteed.
Description
Technical field
The present invention relates to deep-sea pipeline maintainance apparatus, relate generally to a kind of underwater oil delivery pipeline not stopping transportation with pressure plugging holes device.
Background technique
China's pipeline under the ocean has covered the Bohai Sea, the most of waters of South Sea the western and eastern and part waters, the East Sea, and the submarine pipeline of having laid exceedes 3000km, along with the increase of service life, and submarine pipeline damage accident increasing year by year.Underwater oil delivery pipeline not stopping transportation with pressure maintenance technology is not subject to the restriction of the depth of water, can be by diver's back work of being correlated with in shallow water territory; Can all be worked by underwater robot in deepwater field.Because this technology can be carried out maintenance work in the situation that not affecting pipeline conveying, reduce the unnecessary loss that pipeline shutdown brings.
In order to guarantee that not affecting fluid in the process of maintenance or replacing pipeline carries, and must grasp not stopping transportation with pressure perforate and the blocking technology of pipeline under the ocean.Perforate is for bypass is installed, and shutoff is for damaged pipe is separated from in-service petroleum pipeline.Only have install bypass and damaged pipe is separated from in-service petroleum pipeline after, can damaged pipe be excised and be changed.This technical security is reliable, can in pipeline runs well, carry out permanent reparation to impaired part, is the core technology that sea-bottom oil-gas pipeline not stopping transportation with pressure is safeguarded.
Adopt at present conventionally shutoff air bag to carry out shutoff to pipeline, but shutoff air bag can be punctured because pipeline is coarse, cause shutoff air bag to occur to lose heart, and the material of shutoff air bag can split because meeting oily distortion, safety in production is brought to very large hidden danger.
Chinese patent " 96225866.0 " discloses a kind of quadratic crank mechanism pipeline stopping transportation pressure cartridge type blocking machine, strutting and shrinking and realize by the shutoff in Pipe Cutting road and opening by quadratic crank mechanism, construction process is easy, need perforator that pipeline is beaten but this plugging device works, increased workload.
Chinese patent " 200420035807.0 " discloses the delivery non-interruption pressure holing plugging machine of the quick pressurize perforate of a kind of energy shutoff, emphasis discloses the plugging device of three types, wherein two kinds of side plates that plugging device main body is two semicolumns, promote side plate by screw thread transmission, hydraulic jack respectively and complete shutoff, another is positioned over umbrella shape plugging device in pipeline by linkage, by hydraulic mechanism, umbrella plugging device is strutted, realize shutoff, this plugging device structure is comparatively complicated, mechanism kinematic is many, more difficult control.
Chinese patent " 201220557816.0 " discloses a kind of pipeline plug with pressure release control valve, by two relative movement that screw the gland nut on leading screw, cause the variation of circular major-minor sealing tension piece distance, thereby extruding is placed on the rubber seal on leading screw, realize the sealing to pipeline, between major-minor tension piece, establish the breathing pipe of controlled valve control, make pipeline keep consistent with barometric pressure, this plugging device transfer shutoff and callback course is more complicated, underwater robot has been difficult to, and owing to adopting pressure release control valve, cannot realize the maintenance with pressure of pipeline.
Welded tube discloses " fluid line stopping transportation pressure plugging holes new technology " literary composition the 29th in September, 2006 volume the 5th phase, concrete structure to plugging device in this device clearly states, the only simple shutoff mode that adopts the sealing of mechanism hand linkage mechanism of introducing, only introduce fluid line stopping transportation pressure plugging holes new technology from point of theory, the shutoff threeway that this device is used etc. need to be welded on pipeline, and Underwater Welding process is comparatively complicated, difficulty is larger.
Summary of the invention
The object of the invention is to overcome the deficiency of prior art, a kind of shutoff simple in structure reliable underwater oil delivery pipeline stopple plugging device and plugging holes device are provided.
Underwater oil delivery pipeline stopple plugging device of the present invention, it comprises the blocking machine main frame for exporting ahead running, the ahead running output terminal of described blocking machine main frame is connected with plug support, on described plug support, be rotatably connected to a plug by rotary connecting device, described plug can around the running shaft rotation of described rotary connecting device to the position of plug support vertical, described plug have with oil transport pipeline in the suitable plug end of hole shape, on described plug end, rolling wheel support is installed, on described rolling wheel support, be rotatably connected to a guide wheel by rolling wheel support rotating shaft, the angle of described rotary connecting device center of rotation and rolling wheel support rotating shaft center of rotation line and substantially horizontal is acute angle.
Underwater oil delivery pipeline of the present invention not stopping transportation with pressure plugging holes apparatus, it comprises fixture and plugging device, described plugging device comprises the blocking machine main frame for exporting ahead running, the ahead running output terminal of described blocking machine main frame is connected with plug support, on described plug support, be rotatably connected to a plug by rotary connecting device, described plug can around the running shaft rotation of described rotary connecting device to the position of plug support vertical, described plug have with oil transport pipeline in the suitable plug end of hole shape, on described plug end, rolling wheel support is installed, on described rolling wheel support, be rotatably connected to a guide wheel by rolling wheel support rotating shaft, the angle of described rotary connecting device center of rotation and rolling wheel support rotating shaft center of rotation line and substantially horizontal is acute angle, described fixture comprises can the jig main body of chuck on oil transport pipeline, described jig main body comprises, lower clamp main body, described is upper, one side of lower clamp main body is rotatedly connected by rotating shaft, on described upper jig main body, be connected with vertical pipeline and adpting flange is installed on vertical pipeline, described is upper, between lower clamp main body, can be fixedly linked by the first link, on the end face of two of the left and right of described jig main body, be connected with respectively supporting frame, described supporting frame comprises the upper retaining ring being fixed on jig main body end face and is fixed on the lower retaining ring on lower clamp main body end face, between described upper retaining ring and the two ends of lower retaining ring, can be fixedly linked by the second link, the hydraulic seat of two hydraulic pressure installation and push rod are connected with lower retaining ring with the upper retaining ring on corresponding side end face respectively, on described adpting flange, switch valve is installed, described plugging device is fixed on by flange on the valve body of switch valve, described plug and plug support can enter oil transport pipeline by switch valve and vertical pipeline.
Advantage of the present invention:
The plugging device of this mechanism, by a simple pin connection set, the vertical motion of plug support is successfully converted into rotatablely moving of plug, and the design of plug coordinates the motion of guide wheel can effectively reduce the resistance of below shutoff process, and plug support is after plug blocking pipe, play certain supporting effect, there is locked property, when plug is in the time being subject to oil-air pressure active force, can oppositely not move, fixing reliable, thus the validity of assurance shutoff; The groove of plug end intermediate portion is equipped with supporting seal ring, by selecting the seal ring of different-thickness, can complete diameter pipeline maintenance within the specific limits.
Stopper device fixture of the present invention, adopt hydraulic structure supporting frame, there is locked property, can guarantee that fixture, opening in decentralization process, is not subject to the impact of active force outside seabed, be held open state, arrive smoothly and specify submarine pipeline place, implement operation, support frame structure is simple, facilitate the mechanical arm of robot (ROV) to complete various operations, fixing, supporting frame dismounting as closed in the unlatching of fixture, fixture etc.; Design in shape vertical pipeline, play the effect of guiding punching shutoff, facilitate the carrying out of shutoff process; Fixing by combining of first and second link, reliability and the fixed permanent of assurance fixture.
Switch valve adopts and is simply threaded, by screwing of drive bolt, drive the relative movement of switching valve body and valve seat, thereby realize the keying of fixture vertical pipeline, coordinate fixture to complete the process of plugging holes, transmission is efficient, reliable, and its outside employing is fixed hexagon nut, facilitates mechanical arm to give power.
Package unit simplicity of design, easy to operate, shutoff is reliable, taken into full account the feature of underwater operation.
Accompanying drawing explanation
Fig. 1 is the plan view of underwater oil delivery pipeline stopple plugging device of the present invention;
Fig. 2 is the plan view of underwater oil delivery pipeline of the present invention not stopping transportation with pressure plugging holes apparatus;
Fig. 3 is the clamp structure schematic diagram in the device shown in Fig. 2;
Fig. 4 is the jig main body structural representation in the fixture shown in Fig. 3;
Fig. 5 is the support frame structure schematic diagram in the fixture shown in Fig. 3;
Fig. 6-1st, the structural representation of the switch valve in the device shown in Fig. 2;
Fig. 6-2nd, the decomposition texture schematic diagram of the switch valve shown in Fig. 6-1;
Fig. 7 is that the angle on underwater oil delivery pipeline stopple plugging device plug support of the present invention and stopper structure requires schematic diagram.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
Underwater oil delivery pipeline stopple plugging device of the present invention as shown in drawings, it comprises the blocking machine main frame 7 for exporting ahead running, the ahead running output terminal of described blocking machine main frame 7 is connected with plug support 9, on described plug support 9, be rotatably connected to a plug 10 by rotary connecting device, described plug 10 can be around the running shaft rotation of described rotary connecting device to the position vertical with plug support 9, described plug 10 have with oil transport pipeline in the suitable plug end of hole shape, on described plug end, rolling wheel support is installed, on described rolling wheel support, be rotatably connected to a guide wheel 8 by rolling wheel support rotating shaft, the angle а of described rotary connecting device center of rotation and rolling wheel support rotating shaft center of rotation line and substantially horizontal is acute angle, the angle of preferred rotary connecting device center of rotation and rolling wheel support rotating shaft center of rotation line and substantially horizontal is the acute angle that is greater than 45 degree.
As one embodiment of the present invention, described rotary connecting device can adopt pin connection set.
Preferably in the middle of described plug end, along the circumferential direction have groove, in described groove, seal ring is housed.
Underwater oil delivery pipeline of the present invention not stopping transportation with pressure plugging holes apparatus, it comprises fixture and plugging device, described plugging device comprises the blocking machine main frame 7 for exporting ahead running, the ahead running output terminal of described blocking machine main frame 7 is connected with plug support 9, on described plug support 9, be rotatably connected to a plug 10 by rotary connecting device, described plug 10 can be around the running shaft rotation of described rotary connecting device to the position vertical with plug support 9, described plug 10 have with oil transport pipeline in the suitable plug end of hole shape, on described plug end, rolling wheel support is installed, on described rolling wheel support, be rotatably connected to a guide wheel 8 by rolling wheel support rotating shaft, the angle of described rotary connecting device center of rotation and rolling wheel support rotating shaft center of rotation line and substantially horizontal is acute angle, the angle of preferred rotary connecting device center of rotation and rolling wheel support rotating shaft center of rotation line and substantially horizontal is the acute angle that is greater than 45 degree, described fixture comprises can the jig main body 11 of chuck on oil transport pipeline, described jig main body 11 comprises, lower clamp main body 13, 14, described is upper, one side of lower clamp main body is rotatedly connected by rotating shaft, on described upper jig main body, be connected with vertical pipeline and adpting flange is installed on vertical pipeline, described is upper, between lower clamp main body, can be fixedly linked by the first link, on the end face of two of the left and right of described jig main body 11, be connected with respectively supporting frame 12, described supporting frame 12 comprises the upper retaining ring being fixed on jig main body end face and is fixed on the lower retaining ring on lower clamp main body end face, between described upper retaining ring and the two ends of lower retaining ring, can be fixedly linked by the second link, the hydraulic seat of two hydraulic pressure installation and push rod are connected with lower retaining ring with the upper retaining ring on corresponding side end face respectively, on described adpting flange, switch valve is installed, described plugging device is fixed on by flange on the valve body of switch valve, described plug 10 and plug support 9 can enter oil transport pipeline by switch valve and vertical pipeline oil transport pipeline is carried out to shutoff.
Described the first link and the second link can adopt bolt.
As the preferred embodiment of the present invention, described switch valve 3 comprises the switch valve seat 18 being fixed on adpting flange, on described switch valve seat, have valve opening, switching valve body 20 is installed in described valve opening, described switching valve body 20 and being threaded through the drive bolt of switch valve seat, the opening end of vertical pipeline can be blocked or leave to described switching valve body under the drive of drive bolt.
As one embodiment of the present invention, in the middle of described valve opening, be that long strip and both sides are semicircle, described switch valve seat is and two cylindrical bodys that semicircular in shape is suitable.
Adopt the working procedure of this device to be:
After fixture 4 is opened, supported by supporting frame 12, both be transported under water after fixed position, under the operation of ROV, after oil transport pipeline being docked to suit with fixture 4 and clamping, respectively by the upper and lower retaining ring of the fixing upper and lower jig main body 13,14 of first and second link and supporting frame 12, complete the operation of fixing locked fixture; Switch valve 3 is installed on fixture 4, and then ROV mechanical arm clockwise rotates the hexagon head nut of drive bolt 19 in outside, and the switching valve body of switch valve 3 20 is opened, and adopts perforator Kaifeng plug-hole in the situation that not stopping production; Closing switch valve 3 immediately after perforate, and remove perforator; After bypass line has been built and normally worked, opening switch valve 3, transfers plugging device with blocking machine main frame 7; Under the effect of plug support 9, plugging device declines, guide wheel 8 starts to contact with oil transport pipeline inwall, owing to there being suitable loading angle, (angle of rotary connecting device center of rotation and rolling wheel support rotating shaft center of rotation line and substantially horizontal is acute angle, and the angle of preferred rotary connecting device center of rotation and rolling wheel support rotating shaft center of rotation line and substantially horizontal is the acute angle that is greater than 45 degree.The skew force that plug support acts on plug is mainly converted into horizontal thrust), plug 10 counterclockwise rotates around the running shaft of rotary connecting device; Plug support 9 continues to decline, and guide wheel 8 strokes finish, and no longer contact with oil transport pipeline inwall, and plug 10 is rotated further; In the time that plug support 9 bottoms contact with oil transport pipeline inwall plug support 9 stop decline, plug 10 enters active position, with plug support 9 shapes at an angle of 90, meanwhile, in the horizontal direction by locked, be subject to external force and no longer move; After treating oil transport pipeline repair, blocking machine main frame 7 provides tractive force in the other direction, and plug support 9 rises, and the clockwise counterrotating of plug 10, leaves effective block-up position; Plug support 9 continues to rise, and plug 10 is proposed from fixture 4 vertical pipelines; Open the complete pipeline road of repair, after switch valve 3 cuts out, remove plugging device and by-pass line; Use the stifled equipment of lower plug, in fixture 4 vertical pipelines, be lowered to plug stifled, stifledly remove switch valve 3 after tight, load onto blind flange, and supporting frame 12 is removed to recovery.
Claims (8)
1. underwater oil delivery pipeline stopple plugging device, it is characterized in that: it comprises the blocking machine main frame for exporting ahead running, the ahead running output terminal of described blocking machine main frame is connected with plug support, on described plug support, be rotatably connected to a plug by rotary connecting device, described plug can around the running shaft rotation of described rotary connecting device to the position of plug support vertical, described plug have with oil transport pipeline in the suitable plug end of hole shape, on described plug end, rolling wheel support is installed, on described rolling wheel support, be rotatably connected to a guide wheel by rolling wheel support rotating shaft, the angle of described rotary connecting device center of rotation and rolling wheel support rotating shaft center of rotation line and substantially horizontal is acute angle.
2. underwater oil delivery pipeline stopple plugging device according to claim 1, is characterized in that: the angle of described rotary connecting device center of rotation and rolling wheel support rotating shaft center of rotation line and substantially horizontal is the acute angle that is greater than 45 degree.
3. underwater oil delivery pipeline stopple plugging device according to claim 1 and 2, is characterized in that: in the middle of described plug end, along the circumferential direction have groove, in described groove, seal ring is housed.
4. underwater oil delivery pipeline not stopping transportation with pressure plugging holes apparatus, it is characterized in that: it comprises fixture and plugging device, described plugging device comprises the blocking machine main frame for exporting ahead running, the ahead running output terminal of described blocking machine main frame is connected with plug support, on described plug support, be rotatably connected to a plug by rotary connecting device, described plug can around the running shaft rotation of described rotary connecting device to the position of plug support vertical, described plug have with oil transport pipeline in the suitable plug end of hole shape, on described plug end, rolling wheel support is installed, on described rolling wheel support, be rotatably connected to a guide wheel by rolling wheel support rotating shaft, the angle of described rotary connecting device center of rotation and rolling wheel support rotating shaft center of rotation line and substantially horizontal is acute angle, described fixture comprises can the jig main body of chuck on oil transport pipeline, described jig main body comprises, lower clamp main body, described is upper, one side of lower clamp main body is rotatedly connected by rotating shaft, on described upper jig main body, be connected with vertical pipeline and adpting flange is installed on vertical pipeline, described is upper, between lower clamp main body, can be fixedly linked by the first link, on the end face of two of the left and right of described jig main body, be connected with respectively supporting frame, described supporting frame comprises the upper retaining ring being fixed on jig main body end face and is fixed on the lower retaining ring on lower clamp main body end face, between described upper retaining ring and the two ends of lower retaining ring, can be fixedly linked by the second link, the hydraulic seat of two hydraulic pressure installation and push rod are connected with lower retaining ring with the upper retaining ring on corresponding side end face respectively, on described adpting flange, switch valve is installed, described plugging device is fixed on by flange on the valve body of switch valve, described plug and plug support can enter oil transport pipeline by switch valve and vertical pipeline oil transport pipeline is carried out to shutoff.
5. underwater oil delivery pipeline according to claim 4 not stopping transportation with pressure plugging holes apparatus, is characterized in that: the angle of described rotary connecting device center of rotation and rolling wheel support rotating shaft center of rotation line and substantially horizontal is the acute angle that is greater than 45 degree.
6. according to the not stopping transportation with pressure of the underwater oil delivery pipeline described in claim 4 or 5 plugging holes apparatus, it is characterized in that: in the middle of described plug end, along the circumferential direction have groove, in described groove, seal ring is housed.
7. underwater oil delivery pipeline according to claim 6 not stopping transportation with pressure plugging holes apparatus, it is characterized in that: described switch valve comprises the switch valve seat being fixed on adpting flange, on described switch valve seat, have valve opening, in described valve opening, switching valve body is installed, described switching valve body and being threaded through the drive bolt of switch valve seat, the opening end of vertical pipeline can be blocked or leave to described switching valve body under the drive of drive bolt.
8. underwater oil delivery pipeline according to claim 7 not stopping transportation with pressure plugging holes apparatus, is characterized in that: in the middle of described valve opening, be that long strip and both sides are semicircle, described switch valve seat is and two cylindrical bodys that semicircular in shape is suitable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410017963.2A CN103775736A (en) | 2014-01-15 | 2014-01-15 | Plugging device for no stoppage of transmission of underwater oil transmission pipelines under pressure and hole- forming plugging device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410017963.2A CN103775736A (en) | 2014-01-15 | 2014-01-15 | Plugging device for no stoppage of transmission of underwater oil transmission pipelines under pressure and hole- forming plugging device |
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| Publication Number | Publication Date |
|---|---|
| CN103775736A true CN103775736A (en) | 2014-05-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410017963.2A Pending CN103775736A (en) | 2014-01-15 | 2014-01-15 | Plugging device for no stoppage of transmission of underwater oil transmission pipelines under pressure and hole- forming plugging device |
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| CN (1) | CN103775736A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106112518A (en) * | 2016-08-18 | 2016-11-16 | 德科隆（无锡）流体控制有限公司 | Pipeline increases valve or the installation method of equipment online and installs accessory |
| WO2018018668A1 (en) * | 2016-07-23 | 2018-02-01 | 杨越 | Hot-tapping fluid blasting device for unmanned ship |
| CN111927375A (en) * | 2020-09-10 | 2020-11-13 | 深圳市乐惠光电科技有限公司 | Portable oil pumping oil pipe mouth slider |
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| CN2804557Y (en) * | 2005-04-29 | 2006-08-09 | 冯颖 | Rubber cup pipe blocking device |
| CN201696803U (en) * | 2010-04-27 | 2011-01-05 | 新疆三叶管道技术有限责任公司 | Return type stopper |
| EP2320120A2 (en) * | 2009-10-30 | 2011-05-11 | STATS (UK) Limited | Isolation tool |
| CN202452030U (en) * | 2012-01-11 | 2012-09-26 | 沈阳亚达石油化工设备有限公司 | Folding plugging head for reducing pipe |
| CN203286201U (en) * | 2013-05-23 | 2013-11-13 | 中国石油天然气集团公司 | Plug-type sealing choke plug for oil-gas pipeline with pressure |
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2014
- 2014-01-15 CN CN201410017963.2A patent/CN103775736A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2804557Y (en) * | 2005-04-29 | 2006-08-09 | 冯颖 | Rubber cup pipe blocking device |
| EP2320120A2 (en) * | 2009-10-30 | 2011-05-11 | STATS (UK) Limited | Isolation tool |
| CN201696803U (en) * | 2010-04-27 | 2011-01-05 | 新疆三叶管道技术有限责任公司 | Return type stopper |
| CN202452030U (en) * | 2012-01-11 | 2012-09-26 | 沈阳亚达石油化工设备有限公司 | Folding plugging head for reducing pipe |
| CN203286201U (en) * | 2013-05-23 | 2013-11-13 | 中国石油天然气集团公司 | Plug-type sealing choke plug for oil-gas pipeline with pressure |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018018668A1 (en) * | 2016-07-23 | 2018-02-01 | 杨越 | Hot-tapping fluid blasting device for unmanned ship |
| CN106112518A (en) * | 2016-08-18 | 2016-11-16 | 德科隆（无锡）流体控制有限公司 | Pipeline increases valve or the installation method of equipment online and installs accessory |
| CN111927375A (en) * | 2020-09-10 | 2020-11-13 | 深圳市乐惠光电科技有限公司 | Portable oil pumping oil pipe mouth slider |
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Application publication date: 20140507 |