CN220828593U

CN220828593U - Deepwater mechanical connector system

Info

Publication number: CN220828593U
Application number: CN202322370713.4U
Authority: CN
Inventors: 周庆兵; 刘小山; 周庆涛; 周琳; 赵丽娟; 庞涛; 冯旺辉; 闫鹏宇; 周军民; 周席熙; 周念
Original assignee: Individual
Current assignee: Individual
Priority date: 2023-09-01
Filing date: 2023-09-01
Publication date: 2024-04-23
Anticipated expiration: 2033-09-01

Abstract

The utility model relates to a deep water mechanical connector system comprising a deep water mechanical connector (S), a HUB (H), a pipe (G) with a ball flange and a mounting frame (K); the deep water mechanical connector is arranged on the installation frame, one end of the pipeline with the ball flange is connected with the deep water mechanical connector on the installation frame, and the other end of the pipeline with the ball flange is connected with the HUB through the hydraulic tensioning bolt. The device has the characteristics of convenient use and flexible operation, can be operated by an ROV, can realize the quick connection of flat pipes, solves the problem of inconvenient installation, greatly saves manpower and material resources, reduces installation time, has good sealing effect, and is quick, safe and reliable.

Description

Deepwater mechanical connector system

Technical Field

The utility model relates to the technical field of deepwater pipeline installation, in particular to a deepwater mechanical connector system which is mainly applied to quick connection of flat pipes in a deepwater pipe network.

Background

A large amount of petroleum and natural gas resources are reserved in the ocean system of China, and along with the continuous development, the exploitation of the resources is also developed from the shallow water field to the deep water field. The prior art needs manual work to operate, but as the water depth increases, the water pressure gradually increases to exceed the limit of human pressure bearing, and a diver cannot perform construction under the water, so that only underwater operation can be performed by using an underwater Robot (ROV). The prior products can only be manually tightened, or can be pre-tightened in a mode of being matched with a manual work through a hydraulic stretcher, which is time-consuming and labor-consuming. The original connectors can not be connected to pipelines which are not on a straight line, and the other connectors can be connected to pipelines which are not on a straight line, but the connectors are required to be welded, the connectors are required to be welded on water, the limitation is large, the self-sealing test can not be performed, the existence of sealing can be known after the whole pipeline is operated, and a lot of resources are wasted and the environment is polluted if the sealing is not performed. The present utility model has been made to overcome these problems and is based on the above research background, and aims to provide a deep water mechanical connector system that can fulfill the use requirements of deep water flat pipe to flat pipe installation with ROV.

Disclosure of utility model

Aiming at the bottleneck of the installation of the deep water pipeline in the prior art, the utility model aims at: the deepwater mechanical connector system has the characteristics of convenience in use and flexibility in operation, can be operated by an ROV, can realize quick connection of flat pipes, solves the problem of inconvenient installation, greatly saves manpower and material resources, reduces installation time, has good sealing effect, and is quick, safe and reliable.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

A deep water mechanical connector system comprising a deep water mechanical connector, a HUB, a pipe with a ball flange and a mounting frame; the deep water mechanical connector is arranged on the installation frame, one end of the pipeline with the ball flange is connected with the deep water mechanical connector on the installation frame, and the other end of the pipeline with the ball flange is connected with the HUB through the hydraulic tensioning bolt.

As a further optimization of the above solution, the deep water mechanical connector comprises: the deep water connector comprises a deep water connector main body (1), a slip locking device (2), a retainer ring (3), a sealing ring (4), a pressure test gasket (5), a jacking flange (6), a hydraulic tensioning bolt (7), a guide block (8), an ROV operation control panel (9) and a lifting ring (10); the deep water connector comprises a deep water connector main body (1) and a tightening flange (6), wherein a check ring (3) is fixedly arranged on one side, close to the deep water connector main body, of the tightening flange (6), a sealing ring (4) is fixedly arranged on one side, close to the deep water connector main body, of the check ring (3), a pressure test gasket (5) is fixedly arranged on one side, close to the deep water connector main body, of the sealing ring, a sealing ring is fixedly arranged on one side, close to the deep water connector main body, of the pressure test gasket, and a check ring is fixedly arranged on one side, close to the deep water connector main body, of the sealing ring; the slip locking device (2) is concentrically arranged in the deep water connector main body; the deep water connector body (1) is internally provided with a stepped groove which is matched with the shape of the slip locking device and used for tightly pushing the slip locking device; the hydraulic tensioning bolt (7) connects the jacking flange (6) with the deepwater connector main body (1); the installation frame is connected with the deepwater mechanical connector through a guide block (8); the ROV operation control panel (9) is in control connection with the hydraulic tensioning bolt and is used for controlling the expansion and the contraction of the hydraulic tensioning bolt (7) and performing self-sealing pressure test on the deep water mechanical connector after the pipeline is installed; the hanging ring (10) is fixedly arranged on the jacking flange through threaded connection.

As a further optimization of the scheme, the HUB comprises a rotary inner body (11), a rotary ring (12), a self-pressure test control panel (13), a guide device (14), a first hanging ring (15) and a first check ring (16); the rotary inner body (11) and the rotary ring (12) are coaxially arranged, the rotary inner body is arranged in the rotary ring, a connecting flange is arranged on one side, far away from the rotary inner body, of the cross section of the rotary ring, and a plurality of bolt holes for connecting a deep sea pipeline are formed in the connecting flange; the self-pressure test control panel (13) is fixedly arranged on the outer diameter of the rotary ring (12), and an HX gasket is arranged in a sealing groove at the joint of the HUB and the pipeline with the ball flange; an annular groove is formed in the HX gasket, a self-sealing pressure test hole is formed in the annular groove, and a self-pressure test interface is arranged on the self-sealing pressure test hole; the self-pressure test control panel is also provided with a hot-stab socket (36), and the hot-stab socket is in driving connection with the interface of the hydraulic tensioning bolt and the self-pressure test interface through a hydraulic oil circuit (37) and is used for providing pressure required by pressure test for the hydraulic tensioning bolt and the self-pressure test interface; the outer diameter of the rotary ring (12) is also fixedly provided with a guide device (14) and a first hanging ring (15), and the rotary inner body is also provided with a first check ring (16) for preventing the rotary inner body from separating from the rotary ring.

As a further optimization of the scheme, the pipeline with the ball flange comprises a ball flange (17), a deep sea pipeline (18), a HUB flange (19) and a guiding spear (20); the ball flange (17) is fixedly arranged at one end of the deep sea pipeline (18), the HUB flange (19) is fixedly arranged at the other end of the deep sea pipeline, the HUB flange is provided with T-shaped bolt holes, and the T-shaped bolt holes are matched with the positions and the shapes of the bolt holes of the annular flange of the rotating ring; the guide spear (20) is horizontally and fixedly arranged on the outer diameters of the HUB flange (19) and the ball flange (17) respectively, and is matched with the guide device (14); the ball flange is provided with a mounting hole corresponding to the bolt hole on the connecting flange, and after the bolt hole is aligned with the mounting hole, the hydraulic tensioning bolt is inserted into the bolt hole, and the hydraulic tensioning bolt and the mounting hole are fixedly connected by utilizing the ZIP nut.

As a further optimization of the above solution, the hydraulic tensioning bolt comprises: the cylinder barrel (21), the screw (22), the piston (23), the hydraulic bolt and nut (24) and the piston baffle ring (25); a sealing groove (35), an oil inlet hole and an oil outlet hole are formed in the cylinder barrel, a quick connector connected through threads is arranged on the oil inlet hole (33) and the oil outlet hole (34), and a one-way valve for controlling the flow direction of hydraulic oil in a one-way manner is arranged on the quick connector; the piston (23) is coaxially arranged in the cylinder barrel, and a sealing groove is also arranged on the piston; one end of the cylinder barrel is closed, and the other end of the cylinder barrel is fixedly provided with a piston baffle ring; one end of the screw rod (22) sequentially passes through the central round hole of the piston baffle ring, the central shaft hole of the piston (23) and the central hole of the cylinder barrel and then extends out of the cylinder barrel, and the other end of the screw rod is in threaded connection with the hydraulic bolt and nut (24); the outer diameter of the piston baffle ring (25) is provided with threads which correspond to the threads of the inner cavity of the cylinder barrel (21).

As a further optimization of the scheme, the mounting frame comprises a mounting frame main body (26), a mounting frame connecting plate (27), a mounting frame hydraulic cylinder (28), a mounting frame hydraulic motor (29), a mounting frame lock nut tightening device (30) and a mounting frame movable arm (31); the mounting frame connecting plate (27) is connected with the mounting frame main body through bolts; one end of a hydraulic cylinder (28) is fixed on one of the installation frame connecting plates (27), the other end of the hydraulic cylinder is fixed on the movable arm (31), the installation frame hydraulic cylinder and the installation frame hydraulic motor are fixedly arranged on the installation frame main body, the installation frame hydraulic cylinder is in driving connection with the movable arm and used for controlling the swing motion of the movable arm (31), and a locking nut tightening device is in driving connection with the installation frame hydraulic motor and used for driving the deepwater mechanical connector and the bolt on the installation frame to rotate.

The deep water mechanical connector has the following effects:

The utility model has the hydraulic tension bolt and the ZIP nut, can replace manual pre-tightening with a stretcher, saves time and labor, and the tightening nut is tightened by the installation frame to replace manual tightening. In addition, after the ball flange is arranged, the ball flange can be characterized, and two pipelines with the included angles of the axes being +/-10 degrees are connected.

Drawings

Fig. 1 is a cross-sectional view of a deepwater mechanical connector according to the present utility model.

Fig. 2 is a schematic structural view of a deepwater mechanical connector according to the present utility model.

Fig. 3 is a cross-sectional view of a deep water mechanical connector-HUB of the present utility model.

Fig. 4 is a schematic structural view of a deep water mechanical connector-HUB according to the present utility model.

Fig. 5 is a schematic structural view of a deep water mechanical connector-pipe with ball flange according to the present utility model.

Fig. 6 is a cross-sectional view of a deepwater mechanical connector-hydraulic tensioning bolt of the present utility model.

Fig. 7 is a schematic structural view of a deepwater mechanical connector-hydraulic tensioning bolt according to the present utility model.

Fig. 8 is a schematic view of a deep water mechanical connector-mounting frame according to the present utility model.

Fig. 9 is a schematic diagram of the overall structure of the deepwater mechanical connector system of the present utility model.

Fig. 10 is a schematic diagram of the installation of an HX seal ring of a deep water mechanical connector-HUB of the present utility model.

Fig. 11 is a schematic structural view of a deep water mechanical connector-lock nut tightener according to the present utility model.

Fig. 12 is a cross-sectional view of a deep water mechanical connector-lock nut tightener of the present utility model.

Detailed Description

A deepwater mechanical connector system according to the present utility model will now be described in detail with reference to figures 1-12.

A deep water mechanical connector system comprising a deep water mechanical connector S, HUBH, a pipe G with a ball flange, a hydraulic tension bolt and a mounting frame K; the deep water mechanical connector is arranged on the installation frame, one end of the pipeline with the ball flange is connected with the deep water mechanical connector on the installation frame, and the other end of the pipeline with the ball flange is connected with the HUB through the hydraulic tensioning bolt. The deepwater mechanical connector comprises: the deep water connector comprises a deep water connector main body (1), a slip locking device (2), a retainer ring (3), a sealing ring (4), a pressure test gasket (5), a jacking flange (6), a hydraulic tensioning bolt (7), a guide block (8), an ROV operation control panel (9) and a lifting ring (10); the deep water connector comprises a deep water connector main body (1) and a tightening flange (6), wherein a check ring (3) is fixedly arranged on one side, close to the deep water connector main body, of the tightening flange (6), a sealing ring (4) is fixedly arranged on one side, close to the deep water connector main body, of the check ring (3), a pressure test gasket (5) is fixedly arranged on one side, close to the deep water connector main body, of the sealing ring, a sealing ring is fixedly arranged on one side, close to the deep water connector main body, of the pressure test gasket, and a check ring is fixedly arranged on one side, close to the deep water connector main body, of the sealing ring; the slip locking device (2) is concentrically arranged in the deep water connector main body; the deep water connector body (1) is internally provided with a stepped groove which is matched with the shape of the slip locking device and used for tightly pushing the slip locking device; the hydraulic tensioning bolt (7) connects the jacking flange (6) with the deepwater connector main body (1); the installation frame is connected with the deepwater mechanical connector through a guide block (8); the ROV operation control panel (9) is in control connection with the hydraulic tensioning bolt and is used for controlling the expansion and the contraction of the hydraulic tensioning bolt (7) and performing self-sealing pressure test on the deep water mechanical connector after the pipeline is installed; the hanging ring (10) is fixedly arranged on the jacking flange through threaded connection. The HUB comprises a rotary inner body (11), a rotary ring (12), a self-pressure test control panel (13), a guide device (14), a first hanging ring (15) and a first check ring (16); the rotary inner body (11) and the rotary ring (12) are coaxially arranged, the rotary inner body is arranged in the rotary ring, a connecting flange is arranged on one side, far away from the rotary inner body, of the cross section of the rotary ring, and a plurality of bolt holes for connecting a deep sea pipeline are formed in the connecting flange; the self-pressure test control panel (13) is fixedly arranged on the outer diameter of the rotary ring (12), and an HX gasket is arranged in a sealing groove at the joint of the HUB and the pipeline with the ball flange; an annular groove is formed in the HX gasket, a self-sealing pressure test hole is formed in the annular groove, and a self-pressure test interface is arranged on the self-sealing pressure test hole; the self-pressure test control panel is also provided with a hot-stab socket (36), and the hot-stab socket is in driving connection with the interface of the hydraulic tensioning bolt and the self-pressure test interface through a hydraulic oil circuit (37) and is used for providing pressure required by pressure test for the hydraulic tensioning bolt and the self-pressure test interface; the outer diameter of the rotary ring (12) is also fixedly provided with a guide device (14) and a first hanging ring (15), and the rotary inner body is also provided with a first check ring (16) for preventing the rotary inner body from separating from the rotary ring. The pipeline with the ball flange comprises a ball flange (17), a deep sea pipeline (18), a HUB flange (19) and a guiding spear (20); the ball flange (17) is fixedly arranged at one end of the deep sea pipeline (18), the HUB flange (19) is fixedly arranged at the other end of the deep sea pipeline, the HUB flange is provided with T-shaped bolt holes, and the T-shaped bolt holes are matched with the positions and the shapes of the bolt holes of the annular flange of the rotating ring; the guide spear (20) is horizontally and fixedly arranged on the outer diameters of the HUB flange (19) and the ball flange (17) respectively, and is matched with the guide device (14); the ball flange is provided with a mounting hole corresponding to the bolt hole on the connecting flange, and after the bolt hole is aligned with the mounting hole, the hydraulic tensioning bolt is inserted into the bolt hole, and the hydraulic tensioning bolt and the mounting hole are fixedly connected by utilizing the ZIP nut. The hydraulic tensioning bolt includes: the cylinder barrel (21), the screw (22), the piston (23), the hydraulic bolt and nut (24) and the piston baffle ring (25); a sealing groove (35), an oil inlet hole and an oil outlet hole are formed in the cylinder barrel, a quick connector connected through threads is arranged on the oil inlet hole (33) and the oil outlet hole (34), and a one-way valve for controlling the flow direction of hydraulic oil in a one-way manner is arranged on the quick connector; the piston (23) is coaxially arranged in the cylinder barrel, and a sealing groove is also arranged on the piston; one end of the cylinder barrel is closed, and the other end of the cylinder barrel is fixedly provided with a piston baffle ring; one end of the screw rod (22) sequentially passes through the central round hole of the piston baffle ring, the central shaft hole of the piston (23) and the central hole of the cylinder barrel and then extends out of the cylinder barrel, and the other end of the screw rod is in threaded connection with the hydraulic bolt and nut (24); the outer diameter of the piston baffle ring (25) is provided with threads which correspond to the threads of the inner cavity of the cylinder barrel (21). The mounting frame comprises a mounting frame main body (26), a mounting frame connecting plate (27), a mounting frame hydraulic cylinder (28), a mounting frame hydraulic motor (29), a mounting frame lock nut tightening device (30) and a mounting frame movable arm (31); the mounting frame connecting plate (27) is connected with the mounting frame main body through bolts; one end of a hydraulic cylinder (28) is fixed on one of the installation frame connecting plates (27), the other end of the hydraulic cylinder is fixed on the movable arm (31), the installation frame hydraulic cylinder and the installation frame hydraulic motor are fixedly arranged on the installation frame main body, the installation frame hydraulic cylinder is in driving connection with the movable arm and used for controlling the swing motion of the movable arm (31), and a locking nut tightening device is in driving connection with the installation frame hydraulic motor and used for driving the deepwater mechanical connector and the bolt on the installation frame to rotate.

The application method of the deepwater mechanical connector system comprises the following steps:

1) Firstly, lowering the deepwater mechanical connector to the damaged position of the sea pipe; cutting off the sea pipe at the damaged position through equipment for cutting the pipeline;

2) Before the deepwater mechanical connector system is placed into the incision, one end of the incised sea pipe is inserted into the deepwater mechanical connector system along the opening of the propping flange; the other end of the cut pipe is also the same step and is inserted into the deepwater connector body at the other end of the deepwater mechanical connector system; moving the mounting frame onto a sea pipe of the deepwater mechanical connector system;

3) Inserting a locking nut tightener of the mounting frame into a hydraulic bolt lock nut, inserting a hot-stab joint into a self-pressure test control panel through an ROV, injecting pressure into a hydraulic tensioning bolt to enable the hydraulic tensioning bolt to work, and simultaneously providing hydraulic power for a hydraulic motor of the mounting frame to enable the hydraulic motor to rotate so as to drive the hydraulic tensioning bolt lock nut to tighten; tightening the sea pipe to the deep water mechanical connector system; testing the self-sealing of the deepwater mechanical connector through a self-pressure test control panel;

4) After the test is qualified, the pipeline with the ball flange is put down between the two deepwater mechanical connectors; connecting the HUB welded on the deep water mechanical connector system with a pipeline with a ball flange through a hydraulic tensioning bolt and a ZIP nut; the hydraulic tensioning bolts are tightened by using the installation frame through the same method; inserting and welding a hot-stab joint on a self-test pressure control panel on the HUB through an ROV; testing self-sealing performance; and recovering the mounting frame after the mounting frame is qualified.

The previous description of the embodiments is provided to facilitate a person of ordinary skill in the art in order to make and use the present utility model. It will be apparent to those skilled in the art that various modifications can be readily made to these embodiments and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present utility model is not limited to the embodiments described herein, and those skilled in the art, based on the present disclosure, should make improvements and modifications without departing from the scope of the present utility model.

Claims

1. A deep water mechanical connector system characterized by: the deep water mechanical connector system comprises a deep water mechanical connector (S), a HUB (H), a pipeline (G) with a ball flange and a mounting frame (K); the deep water mechanical connector is arranged on the installation frame, one end of the pipeline with the ball flange is connected with the deep water mechanical connector on the installation frame, and the other end of the pipeline with the ball flange is connected with the HUB through a hydraulic tensioning bolt.

2. The deepwater mechanical connector system according to claim 1, wherein: the deepwater mechanical connector comprises: the deep water connector comprises a deep water connector main body (1), a slip locking device (2), a retainer ring (3), a sealing ring (4), a pressure test gasket (5), a jacking flange (6), a hydraulic tensioning bolt (7), a guide block (8), an ROV operation control panel (9) and a lifting ring (10); the deep water connector comprises a deep water connector main body (1) and a tightening flange (6), wherein a check ring (3) is fixedly arranged on one side, close to the deep water connector main body, of the tightening flange (6), a sealing ring (4) is fixedly arranged on one side, close to the deep water connector main body, of the check ring (3), a pressure test gasket (5) is fixedly arranged on one side, close to the deep water connector main body, of the sealing ring, a sealing ring is fixedly arranged on one side, close to the deep water connector main body, of the pressure test gasket, and a check ring is fixedly arranged on one side, close to the deep water connector main body, of the sealing ring; the slip locking device (2) is concentrically arranged in the deep water connector main body; the deep water connector body (1) is internally provided with a stepped groove which is matched with the shape of the slip locking device and used for tightly pushing the slip locking device; the hydraulic tensioning bolt (7) connects the jacking flange (6) with the deepwater connector main body (1); the installation frame is connected with the deepwater mechanical connector through a guide block (8); the ROV operation control panel (9) is in control connection with the hydraulic tensioning bolt and is used for controlling the expansion and the contraction of the hydraulic tensioning bolt (7) and performing self-sealing pressure test on the deep water mechanical connector after the pipeline is installed; the hanging ring (10) is fixedly arranged on the jacking flange (6) through threaded connection.

3. A deep water machine connector system as claimed in claim 2, wherein: the HUB comprises a rotary inner body (11), a rotary ring (12), a self-pressure test control panel (13), a guide device (14), a first hanging ring (15) and a first check ring (16); the rotary inner body (11) and the rotary ring (12) are coaxially arranged, the rotary inner body is arranged in the rotary ring, a connecting flange is arranged on one side, far away from the rotary inner body, of the cross section of the rotary ring, a plurality of bolt holes for connecting a deep sea pipeline are formed in the connecting flange, the self-pressure test control panel (13) is fixedly arranged on the outer diameter of the rotary ring (12), and an HX gasket is arranged in a sealing groove at the joint of the HUB and the pipeline with the ball flange; an annular groove is formed in the HX gasket, a self-sealing pressure test hole is formed in the annular groove, and a self-pressure test interface is arranged on the self-sealing pressure test hole; the self-pressure test control panel is also provided with a hot-stab socket (36), and the hot-stab socket is in driving connection with the interface of the hydraulic tensioning bolt and the self-pressure test interface through a hydraulic oil circuit (37) and is used for providing pressure required by pressure test for the hydraulic tensioning bolt and the self-pressure test interface; the outer diameter of the rotary ring (12) is also fixedly provided with a guide device (14) and a first hanging ring (15), and the rotary inner body is also provided with a first check ring (16) for preventing the rotary inner body from separating from the rotary ring.

4. A deep water machine connector system according to claim 3, characterized in that: the pipeline with the ball flange comprises a ball flange (17), a deep sea pipeline (18), a HUB flange (19) and a guiding spear (20); the ball flange (17) is fixedly arranged at one end of the deep sea pipeline (18), the HUB flange (19) is fixedly arranged at the other end of the deep sea pipeline, the HUB flange is provided with T-shaped bolt holes, and the T-shaped bolt holes are matched with the positions and the shapes of the bolt holes of the annular flange of the rotating ring; the guide spear (20) is horizontally and fixedly arranged on the outer diameters of the HUB flange (19) and the ball flange (17) respectively, and is matched with the guide device (14); the ball flange is provided with a mounting hole corresponding to the bolt hole on the connecting flange, and after the bolt hole is aligned with the mounting hole, the hydraulic tensioning bolt is inserted into the bolt hole, and the hydraulic tensioning bolt and the mounting hole are fixedly connected by utilizing the ZIP nut.

5. The deepwater mechanical connector system according to claim 4, wherein: the hydraulic tensioning bolt includes: the cylinder barrel (21), the screw (22), the piston (23), the hydraulic bolt and nut (24) and the piston baffle ring (25); a sealing groove (35), an oil inlet hole and an oil outlet hole are formed in the cylinder barrel, a quick connector connected through threads is arranged on the oil inlet hole (33) and the oil outlet hole (34), and a one-way valve for controlling the flow direction of hydraulic oil in a one-way manner is arranged on the quick connector; the piston (23) is coaxially arranged in the cylinder barrel, and a sealing groove is also arranged on the piston; one end of the cylinder barrel is closed, and the other end of the cylinder barrel is fixedly provided with a piston baffle ring; one end of the screw rod (22) sequentially passes through the central round hole of the piston baffle ring, the central shaft hole of the piston (23) and the central hole of the cylinder barrel and then extends out of the cylinder barrel, and the other end of the screw rod is in threaded connection with the hydraulic bolt and nut (24); the outer diameter of the piston baffle ring (25) is provided with threads which correspond to the threads of the inner cavity of the cylinder barrel (21).

6. The deepwater mechanical connector system of claim 5, wherein: the mounting frame comprises a mounting frame main body (26), a mounting frame connecting plate (27), a mounting frame hydraulic cylinder (28), a mounting frame hydraulic motor (29), a mounting frame lock nut tightening device (30) and a mounting frame movable arm (31); the mounting frame connecting plate (27) is connected with the mounting frame main body through bolts; one end of a hydraulic cylinder (28) is fixed on one of the installation frame connecting plates (27), the other end of the hydraulic cylinder is fixed on the movable arm (31), the installation frame hydraulic cylinder and the installation frame hydraulic motor are fixedly arranged on the installation frame main body, the installation frame hydraulic cylinder is in driving connection with the movable arm and used for controlling the swing motion of the movable arm (31), and a locking nut tightening device is in driving connection with the installation frame hydraulic motor and used for driving the deepwater mechanical connector and the bolt on the installation frame to rotate.