CN113063043B - Ocean underwater hydraulic connector - Google Patents
Ocean underwater hydraulic connector Download PDFInfo
- Publication number
- CN113063043B CN113063043B CN202110219647.3A CN202110219647A CN113063043B CN 113063043 B CN113063043 B CN 113063043B CN 202110219647 A CN202110219647 A CN 202110219647A CN 113063043 B CN113063043 B CN 113063043B
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- shoulder
- driving piston
- shell
- outer shell
- piston
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Classifications
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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
- F16L17/00—Joints with packing adapted to sealing by fluid pressure
- F16L17/10—Joints with packing adapted to sealing by fluid pressure the packing being sealed by the pressure of a fluid other than the fluid in or surrounding the pipe
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D5/00—Protection or supervision of installations
Abstract
The invention discloses a marine underwater hydraulic connector, comprising: an annular first shoulder extending towards the outside of the center shell is arranged on the outer side of the top of the center shell; the outer shell is sleeved on the outer side of the lower part of the center shell, and the top of the outer shell is fixedly connected with the bottom of the first shoulder; the outer side of the top of the driving piston is provided with a second shoulder extending towards the outer part of the driving piston; the locking blocks are arranged in a plurality and uniformly distributed around the outer circumferential surface of the outer shell, and are arranged between the center shell and the driving piston; the driving piston head is fixedly sleeved on the outer side of the bottom end of the driving piston, and the driving piston head is contacted with the inner side wall of the outer shell and is sealed; the middle part of the inner side of the outer shell is provided with an annular fourth shoulder, and the unlocking piston is positioned above the fourth shoulder and is arranged between the outer shell and the driving piston; the unlocking lifting rod passes through the first shoulder and is fixedly connected with the top of the second shoulder. The hydraulic connector has good sealing effect, and can realize quick connection or disconnection by combining multiple unlocking modes.
Description
Technical Field
The invention relates to the technical field of deep water drilling and production, in particular to an ocean underwater hydraulic connector.
Background
Ocean reserves rich oil and gas resources, along with the gradual decrease of land resources, deep water and ultra-deep water oil and gas exploitation rapidly increases, and the ocean has broad prospect and also faces huge risks and challenges. Therefore, the demand for equipment suitable for deep water exploration and exploitation is growing.
The marine underwater hydraulic connector is an underwater key device and can ensure the normal operation of marine drilling. The device is mainly applied to connection or disconnection of key parts of underwater equipment, and is an important component of an underwater blowout preventer stack (drilling and completion), an underwater christmas tree (production) and an emergency well sealing device (underwater emergency). At present, the technology and the market are monopolized by several foreign equipment manufacturers, the product price is high, the delivery period is long, the technology is one of the bottlenecks for restricting the deep water oil gas exploration and development key technical equipment in China, the sealing effect of the currently used connector is poor, and the unlocking is not easy to realize when the hydraulic power fails.
Therefore, the marine underwater hydraulic connector which has good sealing effect and can realize quick connection or disconnection by combining multiple unlocking modes is researched and is a problem to be solved by the technicians in the field.
Disclosure of Invention
In view of the above, the invention provides the marine underwater hydraulic connector which has good sealing effect and can be quickly connected or disconnected by combining multiple unlocking modes.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
a marine subsea hydraulic connector comprising:
the central shell is cylindrical, and a connecting hole is formed in the center of the central shell; an annular first shoulder extending towards the outside of the center shell is arranged on the outer side of the top of the center shell, and the first shoulder is integrally connected with the center shell;
the inner part of the outer shell is hollow, the outer shell is sleeved on the outer side of the lower part of the center shell, and the top of the outer shell is fixedly connected with the bottom of the first shoulder;
the driving piston is sleeved between the center shell and the outer shell; the outer side of the top of the driving piston is provided with a second shoulder extending towards the outer part of the driving piston, and the outer circumferential surface of the second shoulder is in contact with and is sealed with the inner side surface of the outer shell;
the locking blocks are arranged in a plurality, uniformly distributed around the outer circumferential surface of the outer shell and arranged between the center shell and the driving piston; a shoulder is arranged at the outer side surface of the bottom end of the center shell, a first notch corresponding to the third shoulder is arranged at one side, contacted with the center shell, of the locking block, and the third shoulder is arranged at the first notch; the other side of the locking block is contacted with the surface of the driving piston; the top of one side of the locking block, which is contacted with the driving piston, is provided with a second notch which is matched with the shape of the second shoulder, and the second notch is arranged above the second shoulder;
the driving piston head is fixedly sleeved on the outer side of the bottom end of the driving piston, and is in contact with the inner side wall of the outer shell and sealed;
the unlocking piston is arranged above the fourth shoulder and between the outer shell and the driving piston, and is sealed with contact surfaces of the outer shell and the driving piston;
the unlocking lifting rod penetrates through the first shoulder and is fixedly connected with the top of the second shoulder.
The hydraulic connector has the beneficial effects that the primary unlocking cavity and the secondary unlocking cavity are formed between the driving piston and the unlocking piston or between the unlocking piston and the third shoulder, the unlocking lifting rod forms the third unlocking, the hydraulic connector has three unlocking modes, the operation is convenient, the unlocking reliability is high, and the sealing effect of the connector is good.
Preferably, the inner wall of the bottom end of the connecting hole of the central shell is provided with a first sealing surface and a second sealing surface, a steel ring is connected between the bottom end of the central shell and the wellhead or the mandrel, and the steel ring is in sealing connection with the bottom end of the connecting hole. The steel ring with different sizes can be connected with the first sealing surface or the second sealing surface through replacement, when one of the sealing surfaces is damaged, the steel ring can be continuously used through replacement, the sealing effect is good, the operation is convenient, and the safety and the reliability are realized.
Preferably, an opening locking ring is arranged at one end of the driving piston, which is contacted with the driving piston head, a step which is sunken towards the inner side of the driving piston head is arranged at one side of the driving piston head, which is contacted with the opening locking ring, and the step of the driving piston head is arranged at the top of the opening locking ring. The drive piston and the drive piston head can be connected together through the opening locking ring, so that the drive piston head moves up and down along with the drive piston, and the drive piston head is convenient to install.
Preferably, a display rod passes through the top of the first shoulder and abuts against the top of the second shoulder; the utility model discloses a display device, including display rod, first shoulder top, display rod, second spring, first shoulder top with the junction of display rod is fixed with first spring holder, the display rod wears to locate the inside of first spring holder, the bottom of display rod is equipped with the second spring holder, the outside cover of display rod is equipped with first spring, the both ends of first spring respectively with first spring holder and second spring holder butt. The up-and-down movement of the display rod can reflect the locking or opening state of the hydraulic connector, and the arrangement of the first spring enables the up-and-down movement process of the display rod to be smoother.
Preferably, the top of display lever is connected with the stay cord, display device is connected to the other end of stay cord, display device includes: the display panel, the indication circular plate, the indication rod, the fixed cylinder, the connecting cylinder and the second spring; the connecting cylinder is fixedly connected with the bottom of the fixed cylinder, both ends of the connecting cylinder and the fixed cylinder are in an opening shape and are fixed in the display panel, the indicating rod penetrates through the connecting cylinder and the fixed cylinder, the top of the indicating rod is fixedly connected with an indicating circular plate, a third spring seat is arranged on the outer surface of the indicating rod, the third spring seat is arranged in the inner cavity of the fixed cylinder, a second spring is sleeved outside the indicating rod, one end of the second spring is abutted to the bottom of the third spring seat, and the other end of the second spring is abutted to the top end face of the connecting cylinder; and the surface of the display panel is provided with an observation window, and the indication circular plate is arranged at the observation window. The display rod moves up and down to pull the indication rod to move up and down through the pull rope, and the moving position of the indication circular plate can be observed through the observation window, so that a worker on the ground can conveniently acquire the locking or opening state of the hydraulic connector.
Preferably, a plurality of flushing pipelines are uniformly arranged at the top of the first shoulder, the top of each flushing pipeline is connected with an oil way joint, the bottom of each flushing pipeline is connected with an oil way nozzle, and liquid sprayed out of each oil way nozzle acts between the driving piston and the locking block. The hydrate inhibitor is introduced into the flushing pipeline, so that hydrate can be prevented from forming around the locking mechanism in the hydraulic connector in the using process, and the deep water working condition can be adapted.
Preferably, a plurality of oil ways are uniformly arranged at the top of the first shoulder, and pass through the first shoulder and the outer shell body to be communicated between the unlocking piston and the fourth shoulder or between the driving piston and the unlocking piston. Through letting in hydraulic oil to different oil circuits, can realize the unblock to the different modes of hydraulic connector, also can discharge the hydraulic oil in the hydraulic connector in the oil circuit simultaneously, realize the locking of hydraulic connector.
Preferably, the bottom fixedly connected with annular connecting plate of shell body, the bottom of connecting plate sets up flexible sealing member, flexible sealing member is fixed in through annular clamp plate the bottom of connecting plate, flexible sealing member middle part is equipped with the opening, cup joints in the outside of well head or dabber, and seals with the outer wall of well head or dabber. The flexible seal may prevent hydrate from entering the interior of the hydraulic connector during installation.
Preferably, the locking block includes: the locking body is connected with the bottom of the locking body and is used for clamping the outer wall of a wellhead or a mandrel, the locking body is respectively contacted with the third shoulder and the driving piston, and the first notch and the second notch are both arranged on the locking body. The connection of different wellheads or mandrels is conveniently realized by replacing clamping blocks of different types.
Preferably, sealing elements are arranged at the contact surface of the driving piston and the inner wall of the outer shell, the contact surface of the unlocking piston and the outer shell or the driving piston, the contact surface of the fourth shoulder end surface and the driving piston, the contact surface of the driving piston head and the driving piston or the inner wall of the outer shell, and sand scraping and dust removing rings are arranged at the top of the contact surface of the driving piston and the inner wall of the outer shell and the bottom of the contact surface of the driving piston head and the inner wall of the outer shell. The hydraulic connector adopts a redundant sealing design technology, so that the hydraulic connector is safer and more reliable in the underwater use process.
Compared with the prior art, the invention discloses and provides the marine underwater hydraulic connector, which has the beneficial effects that:
(1) The hydraulic connector adopts a redundant sealing design technology, so that the first sealing surface is damaged under water, the sealing can be finished by replacing the standby sealing surface, and the hydraulic connector is safe and reliable;
(2) The hydraulic connector has hydraulic control, is convenient to operate, has three unlocking functions, can be opened by pulling the unlocking lifting rod when hydraulic power fails, and has high unlocking reliability;
(3) The hydraulic connector can be connected with different types of wellheads or mandrels, and has wide application range and strong applicability;
(4) The hydraulic connector can prevent hydrate from entering and form hydrate in the use process, and is suitable for deep water and ultra-deep working conditions;
(5) The hydraulic connector can realize local and remote display in locking and unlocking states, and can be widely applied to working conditions such as underwater production, well drilling and completion, well repair, underwater emergency rescue and the like.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present invention, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.
FIG. 1 is a cross-sectional view of one type of wellhead connection for a hydraulic connector provided by the present invention;
FIG. 2 is a cross-sectional view of another type of wellhead connection for a hydraulic connector provided by the present invention;
FIG. 3 is an enlarged view of the structure shown at A in FIG. 1, provided by the present invention;
FIG. 4 is a top view of a hydraulic connector provided by the present invention;
FIG. 5 is a cross-sectional view taken at B-B in FIG. 4, provided by the present invention;
FIG. 6 is a schematic view of the internal structure of a display device in a hydraulic connector according to the present invention;
fig. 7 is a schematic structural view of a first locking block in the hydraulic connector according to the present invention;
fig. 8 is a schematic structural view of a second type of locking block in the hydraulic connector according to the present invention;
fig. 9 is a schematic structural view of a third locking block in the hydraulic connector according to the present invention;
fig. 10 is a schematic structural view of a fourth locking block in the hydraulic connector provided by the invention.
Wherein, in the drawing,
1-a center housing;
11-a first shoulder; 12-a third shoulder; 13-a first sealing surface; 14-a second sealing surface; 15-steel ring; 16-a first spring seat; 17-flushing the pipeline; 18-an oil way joint; 19-an oil-way nozzle; 110-an oil path;
2-an outer shell;
21-a fourth shoulder; 22-connecting plates; 23-flexible seals; 24-an annular pressing plate;
3-driving a piston;
31-a second shoulder; 32-an open locking ring;
4-locking blocks;
41-a first notch; 42-a second notch; 43-locking the body; 44-clamping blocks;
5-driving the piston head;
51-a retaining ring;
6-unlocking the piston; 7-unlocking the lifting rod;
8-display bar;
81-a second spring seat; 82-a first spring;
9-pulling ropes;
10-a display device;
a display panel; 102-indicating a circular plate; 103-an indicator bar; 104-fixing the cylinder; 105-connecting cylinder; 106-a second spring; 107-a third spring seat; 108-a viewing window; 109-a fixing plate;
011—a seal; 012-sand scraping dust removing ring; 013-wellhead or mandrel; 014—guide ring.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The embodiment of the invention discloses a marine underwater hydraulic connector, which comprises:
the central shell 1 is cylindrical, and a connecting hole is formed in the center of the central shell 1; the outer side of the top of the center shell 1 is provided with an annular first shoulder 11 extending towards the outside of the center shell 1, and the first shoulder 11 is integrally connected with the center shell 1;
the outer shell 2 is hollow, the outer shell 2 is sleeved outside the lower part of the center shell 1, and the top of the outer shell 2 is fixedly connected with the bottom of the first shoulder 11;
the driving piston 3 is sleeved between the center shell 1 and the outer shell 2; the outer side of the top of the driving piston 3 is provided with a second shoulder 31 extending towards the outer part of the driving piston 3, and the outer circumferential surface of the second shoulder 31 is contacted with the inner side surface of the outer shell 2 and is sealed;
the locking blocks 4 are arranged in a plurality, uniformly distributed around the outer circumferential surface of the outer shell 2 and arranged between the center shell 1 and the driving piston 3; the outer side surface of the bottom end of the center shell 1 is provided with a third shoulder 12, one side of the locking block 4, which is in contact with the center shell 1, is provided with a first notch 41 which is matched with the third shoulder 12, and the third shoulder 12 is arranged at the first notch 41; the other side of the locking block 4 is contacted with the surface of the driving piston 3; the top of the side of the locking block 4 contacted with the driving piston 3 is provided with a second notch 42 which is matched with the shape of the second shoulder 31, and the second notch 42 is arranged above the second shoulder 31;
the driving piston head 5 is fixedly sleeved on the outer side of the bottom end of the driving piston 3, and the driving piston head 5 is in contact with and sealed with the inner side wall of the outer shell 2;
the unlocking piston 6 is provided with an annular fourth shoulder 21 in the middle of the inner side of the outer shell 2, and the unlocking piston 6 is positioned above the fourth shoulder 21 and is arranged between the outer shell 2 and the driving piston 3 to be sealed with contact surfaces of the outer shell 2 and the driving piston 3;
the unlocking lifting lever 7 passes through the first shoulder 11 and is fixedly connected with the top of the second shoulder 31.
In order to further optimize the technical scheme, the contact surfaces of the driving piston 3 and the locking block 4 are inclined surfaces which are matched with each other, so that the first notch 41 of the locking block 4 can be driven to rotate at the top of the third shoulder 12 when the driving piston 3 moves upwards, unlocking of the locking block 4 is realized, and the locking block 4 is driven to rotate to realize locking action when the driving piston 3 moves downwards.
In order to further optimize the above technical solution, when the wellhead or the mandrel in fig. 1 is connected, a guide ring 014 is provided at the bottom of the center housing 1, so that the wellhead and the mandrel 013 are convenient to insert, and guide, when the wellhead and the mandrel 013 in fig. 2 are connected, due to the relationship of the structures of the wellhead and the mandrel 013, the wellhead and the mandrel 013 are easy to insert, and the guide ring 014 is not required to be provided when the positions are found.
In order to further optimize the technical scheme, the inner wall of the bottom end of the connecting hole of the central shell 1 is provided with a first sealing surface 13 and a second sealing surface 14, a steel ring 15 is connected between the bottom end of the central shell 1 and a wellhead or a mandrel, and the steel ring 15 is in sealing connection with the bottom end of the connecting hole.
In order to further optimize the technical scheme, one end of the driving piston 3, which is contacted with the driving piston head 5, is provided with an opening locking ring 32, one side of the driving piston head 5, which is contacted with the opening locking ring 32, is provided with a step recessed towards the inner side of the driving piston head 5, and the step of the driving piston head 5 is arranged at the top of the opening locking ring 32. During assembly, the retaining ring 51 is arranged at the bottom of the driving piston head 5, and the top of the retaining ring 51 is arranged at the bottom of the opening locking ring 32, so that the step of the driving piston head 5 cannot be separated from the opening locking ring 32 during assembly.
In order to further optimize the technical scheme, the display rod 8 penetrates through the top of the first shoulder 11, and the display rod 8 penetrates through the first shoulder 11 to be abutted against the top of the second shoulder 31; the junction of first circular bead top 11 and demonstration pole 8 is fixed with first spring holder 16, and the inside of first spring holder 16 is worn to locate by demonstration pole 8, and the bottom of demonstration pole 8 is equipped with second spring holder 81, and the outside cover of demonstration pole 8 is equipped with first spring 82, and the both ends of first spring 82 respectively with first spring holder 16 and second spring holder 81 butt.
In order to further optimize the above technical solution, the top of the display rod 8 is connected with a pull rope 9, the other end of the pull rope 9 is connected with a display device 10, and the display device 10 includes: a display panel 101, an indication circular plate 102, an indication rod 103, a fixed cylinder 104, a connecting cylinder 105, and a second spring 106; the connecting cylinder 105 is fixedly connected with the bottom of the fixed cylinder 104, both ends of the connecting cylinder 105 and the fixed cylinder 104 are opened and fixed in the display panel 101, the indicating rod 103 penetrates through the connecting cylinder 105 and the fixed cylinder 104, the top of the indicating rod 103 is fixedly connected with the indicating circular plate 102, a third spring seat 107 is arranged on the outer surface of the indicating rod 103, the third spring seat 107 is arranged in the inner cavity of the fixed cylinder 104, a second spring 106 is sleeved outside the indicating rod 103, one end of the second spring 106 is abutted to the bottom of the third spring seat 107, and the other end of the second spring 106 is abutted to the top end face of the connecting cylinder 105; the surface of the display panel 101 is provided with an observation window 108, and the indication circular plate 102 is arranged at the observation window 108. The fixed cylinder 104 is fixed in the display panel 101 through the fixed plate 109, and the inside diameter of the connecting cylinder 105 is smaller than the inside diameter of the fixed cylinder 104, so that the second spring 106 can be abutted with the end face of the connecting cylinder 105.
In order to further optimize the technical scheme, a plurality of flushing pipelines 17 are uniformly arranged at the top of the first shoulder 11, the top of each flushing pipeline 17 is connected with an oil way joint 18, the bottom of each flushing pipeline is connected with an oil way nozzle 19, and liquid sprayed by each oil way nozzle 19 acts between the driving piston 3 and the locking block 4.
In order to further optimize the above technical solution, the top of the first shoulder 11 is uniformly provided with a plurality of oil paths 110, and the plurality of oil paths 110 pass through the first shoulder 11 and the outer casing 2 to be communicated between the unlocking piston 6 and the fourth shoulder 21 or between the driving piston 3 and the unlocking piston 6.
In order to further optimize the technical scheme, the bottom of the outer shell 2 is fixedly connected with an annular connecting plate 22, the bottom of the connecting plate 22 is provided with a flexible sealing element 23, the flexible sealing element 23 is fixed at the bottom of the connecting plate 22 through an annular pressing plate 24, the middle part of the flexible sealing element 23 is provided with an opening, and the opening is sleeved on the outer side of a wellhead or a mandrel 013 and is sealed with the outer wall of the wellhead or the mandrel 013. The annular pressure plate 24 fixes the flexible seal 23 to the connection plate 22 by bolts.
In order to further optimize the above technical solution, the locking block 4 comprises: the locking body 41 and the fixture block 42, the fixture block 42 is connected with the bottom of the locking body 41, and is used for clamping the outer wall of a well head or a mandrel 013, the locking body is respectively contacted with the third shoulder 12 and the driving piston 3, and the first notch 41 and the second notch 42 are both arranged on the locking body 43.
In order to further optimize the technical scheme, the contact surface of the driving piston 3 and the inner wall of the outer shell 2, the contact surface of the unlocking piston 6 and the outer shell 2 or the driving piston 3, the contact surface of the end surface of the fourth shoulder 21 and the driving piston 3, and the contact surface of the driving piston head 5 and the driving piston 3 or the inner wall of the outer shell 2 are all provided with sealing pieces 011, and the top of the contact surface of the driving piston 3 and the inner wall of the outer shell 2 and the bottom of the contact surface of the driving piston head 5 and the inner wall of the outer shell 2 are all provided with sand scraping and dust removing rings 012.
To further optimize the above technical solution, fig. 7 to 10 are respectively four forms of the locking block 4, fig. 8 is an integral of fig. 7, and fig. 10 is an integral of fig. 9.
Working principle:
when the driving piston 3 moves downwards, the locking block 4 locks the wellhead or the mandrel 013, hydraulic oil is injected between the driving piston 3 and the unlocking piston 6 through the oil way 110, the driving piston 3 moves upwards, and the locking block 4 is opened, so that a first unlocking mode of the wellhead or the mandrel 013 is realized; when the locking block 4 is locked, hydraulic oil is injected between the unlocking piston 6 and the fourth shoulder 21 of the outer shell 2 through the oil way 110, the piston 3 is driven to move upwards, the locking block 4 is opened, and a second unlocking mode of a wellhead or a mandrel 013 is realized; when the locking block 4 is locked, the unlocking lifting rod 7 is lifted upwards to drive the driving piston 3 to move upwards, so that a third unlocking mode of the wellhead or the mandrel 013 is realized.
In the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (7)
1. A marine submerged hydraulic connector, comprising:
the central shell (1), the central shell (1) is cylindrical, and a connecting hole is formed in the center of the central shell; an annular first shoulder (11) extending towards the outside of the center shell (1) is arranged on the outer side of the top of the center shell (1), and the first shoulder (11) is integrally connected with the center shell (1);
the inner part of the outer shell (2) is hollow, the outer shell (2) is sleeved on the outer side of the lower part of the center shell (1), and the top of the outer shell (2) is fixedly connected with the bottom of the first shoulder (11);
the driving piston (3) is sleeved between the center shell (1) and the outer shell (2); a second shoulder (31) extending towards the outside of the driving piston (3) is arranged on the outer side of the top of the driving piston (3), and the outer circumferential surface of the second shoulder (31) is in contact with and is sealed with the inner side surface of the outer shell (2);
the locking blocks (4) are arranged in a plurality, uniformly distributed around the outer circumferential surface of the outer shell (2), and arranged between the center shell (1) and the driving piston (3); a third shoulder (12) is arranged at the outer side surface of the bottom end of the center shell (1), a first notch (41) which is matched with the third shoulder (12) is arranged at one side, which is contacted with the center shell (1), of the locking block (4), and the third shoulder (12) is arranged at the first notch (41); the other side of the locking block (4) is contacted with the surface of the driving piston (3); the top of one side of the locking block (4) contacted with the driving piston (3) is provided with a second notch (42) which is matched with the shape of the second shoulder (31), and the second notch (42) is arranged above the second shoulder (31);
the driving piston head (5) is fixedly sleeved on the outer side of the bottom end of the driving piston (3), and the driving piston head (5) is in contact with and is sealed with the inner side wall of the outer shell (2);
the unlocking piston (6) is arranged in the middle of the inner side of the outer shell (2), an annular fourth shoulder (21) is arranged in the middle of the inner side of the outer shell (2), the unlocking piston (6) is arranged above the fourth shoulder (21), and is arranged between the outer shell (2) and the driving piston (3) to be sealed with contact surfaces of the outer shell (2) and the driving piston (3);
the unlocking lifting rod (7) penetrates through the first shoulder (11) and is fixedly connected with the top of the second shoulder (31);
a display rod (8) is arranged at the top of the first shoulder (11) in a penetrating way, and the display rod (8) passes through the first shoulder (11) to be abutted to the top of the second shoulder (31); the display device is characterized in that a first spring seat (16) is fixed at the joint of the top of the first shoulder (11) and the display rod (8), the display rod (8) is arranged in the first spring seat (16) in a penetrating mode, a second spring seat (81) is arranged at the bottom end of the display rod (8), a first spring (82) is sleeved on the outer side of the display rod (8), and two ends of the first spring (82) are respectively abutted to the first spring seat (16) and the second spring seat (81);
the top of display pole (8) is connected with stay cord (9), display device (10) are connected to the other end of stay cord (9), display device (10) include: a display panel (101), an indication circular plate (102), an indication rod (103), a fixed cylinder (104), a connecting cylinder (105) and a second spring (106); the connecting cylinder (105) is fixedly connected with the bottom of the fixed cylinder (104), two ends of the connecting cylinder (105) and the fixed cylinder (104) are both open and fixed in the display panel (101), the indicating rod (103) penetrates through the connecting cylinder (105) and the fixed cylinder (104), the top of the indicating rod (103) is fixedly connected with the indicating circular plate (102), a third spring seat (107) is arranged on the outer surface of the indicating rod (103), the third spring seat (107) is arranged in the inner cavity of the fixed cylinder (104), a second spring (106) is sleeved outside the indicating rod (103), one end of the second spring (106) is abutted to the bottom of the third spring seat (107), and the other end of the second spring is abutted to the top end face of the connecting cylinder (105); an observation window (108) is formed in the surface of the display panel (101), and the indication circular plate (102) is arranged at the observation window (108);
a plurality of oil ways (110) are uniformly formed in the top of the first shoulder (11), and the oil ways (110) penetrate through the first shoulder (11) and the outer shell (2) to be communicated with the unlocking piston (6) and the fourth shoulder (21) or the driving piston (3) and the unlocking piston (6).
2. The marine underwater hydraulic connector according to claim 1, wherein a first sealing surface (13) and a second sealing surface (14) are formed on the inner wall of the bottom end of the connecting hole of the central housing (1), a steel ring (15) is connected between the bottom end of the central housing (1) and a wellhead or a mandrel (013), and the steel ring (15) is in sealing connection with the bottom end of the connecting hole.
3. A marine submerged hydraulic connector according to claim 1 or 2, characterized in that the end of the drive piston (3) in contact with the drive piston head (5) is provided with an open locking ring (32), the side of the drive piston head (5) in contact with the open locking ring (32) is provided with a step recessed towards the inside of the drive piston head (5), the step of the drive piston head (5) being placed on top of the open locking ring (32).
4. The marine underwater hydraulic connector according to claim 1, wherein a plurality of flushing pipes (17) are uniformly arranged at the top of the first shoulder (11), the top of each flushing pipe (17) is connected with an oil-way joint (18), the bottom of each flushing pipe is connected with an oil-way nozzle (19), and liquid sprayed out of the oil-way nozzles (19) acts between the driving piston (3) and the locking block (4).
5. The marine underwater hydraulic connector according to claim 1, wherein an annular connecting plate (22) is fixedly connected to the bottom of the outer shell (2), a flexible sealing element (23) is arranged at the bottom of the connecting plate (22), the flexible sealing element (23) is fixed to the bottom of the connecting plate (22) through an annular pressing plate (24), an opening is formed in the middle of the flexible sealing element (23), and the flexible sealing element is sleeved on the outer side of a wellhead or a mandrel (013) and is sealed with the outer wall of the wellhead or the mandrel (013).
6. A marine underwater hydraulic connector as claimed in claim 5, characterized in that the locking block (4) comprises: the locking device comprises a locking body (43) and a clamping block (44), wherein the clamping block (44) is connected with the bottom of the locking body (43) and is used for clamping the outer wall of a wellhead or a mandrel (013), the locking body is respectively contacted with the third shoulder (12) and the driving piston (3), and the first notch (41) and the second notch (42) are both formed in the locking body (43).
7. A marine submerged hydraulic connector according to any of claims 1, 2, 5, 6, characterized in that the contact surface of the driving piston (3) with the inner wall of the outer housing (2), the contact surface of the unlocking piston (6) with the outer housing (2) or the driving piston (3), the contact surface of the fourth shoulder (21) end surface with the driving piston (3), the contact surface of the driving piston head (5) with the driving piston (3) or the inner wall of the outer housing (2) are provided with sealing elements (011), and the contact surface top of the driving piston (3) with the inner wall of the outer housing (2), and the contact surface bottom of the driving piston head (5) with the inner wall of the outer housing (2) are provided with sand scraping and dust removing rings (012).
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| CN114838226B (en) * | 2022-03-30 | 2023-04-28 | 宁波东方电缆股份有限公司 | Umbilical cable underwater terminal butt joint device |
| CN115234187B (en) * | 2022-07-18 | 2024-04-12 | 中国石油大学(华东) | Quick connecting device suitable for offshore emergency well sealing alignment |
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