CN217584097U - Linkage device for marine pipe operation - Google Patents

Abstract

The application provides a linkage of sea pipe operation includes: the cleaning unit comprises a cleaning installation frame, a cleaning manifold structure and a first coloring agent manifold structure, and the cleaning manifold structure and the first coloring agent manifold structure are arranged on the cleaning installation frame; the pigging manifold structure comprises a pigging Venturi tube section, and the first coloring agent manifold structure is connected with the pigging Venturi tube section. The technical scheme of this application has solved the preliminary debugging cycle of the sea pipe among the prior art longer effectively, the great problem of human cost and equipment cost.

Description

Linkage device for marine pipe operation

Technical Field

The application relates to the technical field of pre-debugging of marine pipelines, in particular to a linkage device for marine pipe operation.

Background

With the increase of the exploitation of offshore oil at home and abroad, especially the development of deepwater oil fields, more and more submarine pipelines are laid on the seabed, and the installation water depth of the submarine pipelines is continuously increased, so that the water depth of part of deepwater submarine pipeline projects which are planned at present exceeds 3000m. In offshore oil engineering, a submarine pipeline connects an offshore oil and gas field, oil storage equipment or a land terminal into an organic whole, so that all links of an offshore production facility form a production operation system which is related and coordinated with each other through the pipeline. Consequently, subsea pipeline pre-commissioning techniques and processes become of particular importance.

The pre-debugging of the submarine pipeline is a complex process. The pre-debugging of the submarine pipeline mainly comprises the processes of pipe cleaning, diameter measuring, pressure testing, water draining, drying and inerting, and pre-debugging operation is required before the newly laid submarine pipeline is put into production, so that the newly laid submarine pipeline can be inspected on line, and the submarine pipeline can be ensured to be served in the best state. The pre-debugging operation can reduce the corrosion of the submarine pipeline and prolong the service life of the submarine pipeline, and the formation of gas pipeline hydrate can be reduced through water drainage, drying and inerting in the submarine pipeline pre-debugging operation, so that the flowing efficiency of the submarine pipeline is improved.

The submarine pipeline sometimes causes leakage of the submarine pipeline due to installation, manufacturing and other reasons, and the leakage of the submarine pipeline is not easy to find. If the leakage of the submarine pipeline is detected separately, not only the pre-commissioning period of the submarine pipeline is prolonged, but also a great deal of labor cost and equipment cost are increased.

SUMMERY OF THE UTILITY MODEL

The application provides a linkage of sea pipe operation for the preliminary debugging cycle of solving the sea pipe among the prior art is longer, the great problem of human cost and equipment cost.

In order to solve the above problems, the present application provides a linkage device for marine vessel operation, comprising: the cleaning unit comprises a cleaning installation frame, a cleaning manifold structure and a first coloring agent manifold structure, and the cleaning manifold structure and the first coloring agent manifold structure are arranged on the cleaning installation frame; the pigging manifold structure comprises a pigging Venturi tube section, and the first coloring agent manifold structure is connected with the pigging Venturi tube section.

Further, the pigging manifold structure comprises a pigging filter pipe section, a first branch pipe, a second branch pipe, a first valve, a second valve, a centrifugal pump and a liquid outlet pipe section, wherein the pigging filter pipe section is connected with the liquid inlet end of the pigging Venturi pipe section, the first branch pipe and the second branch pipe are connected in parallel at the liquid outlet end of the pigging Venturi pipe section, the first end of the liquid outlet pipe section is connected with the liquid outlet end of the first branch pipe and the liquid outlet end of the second branch pipe, the first valve is arranged on the first branch pipe, and the second valve and the centrifugal pump are arranged on the second branch pipe.

Furthermore, the pigging unit also comprises a first corrosion inhibitor manifold structure, and the first corrosion inhibitor manifold structure is connected with the pigging Venturi tube section.

Furthermore, the pigging assembly further comprises a pigging control structure, the pigging control structure is arranged on the pigging installation frame, and the pigging control structure is electrically connected with the first coloring agent manifold structure and the first corrosion inhibitor manifold structure.

Further, the linkage device further comprises: the pressure testing unit comprises a pressure testing installation frame, a pressurizing manifold structure and a second coloring agent manifold structure, and the pressurizing manifold structure and the second coloring agent manifold structure are both arranged on the installation frame; the pressurization manifold structure comprises a pressure test Venturi tube section, and the second coloring agent manifold structure is connected with the pressure test Venturi tube section.

Furthermore, the pressurization manifold structure still includes one-level pressure testing filter tube section, third valve and second grade pressure testing filter tube section, and the third valve is located one-level pressure testing filter tube section and pressure testing venturi section between, and the one end that deviates from the third valve in pressure testing venturi section is connected to second grade pressure testing filter tube section.

Furthermore, the pressurization manifold structure further comprises an underwater plunger pump, an underwater safety valve pipe section, a fourth valve and a liquid inlet pipe section, wherein the underwater plunger pump is connected with one end, deviating from the pressure testing Venturi pipe section, of the second-stage pressure testing filtering pipe section, the underwater safety valve pipe section and the liquid inlet pipe section are connected with the underwater plunger pump, and the fourth valve is arranged on the liquid inlet pipe section.

Furthermore, the pressure test unit also comprises a second corrosion inhibitor manifold structure, and the second corrosion inhibitor manifold structure is connected with the pressure test Venturi tube section.

Further, the pressure test unit also comprises a pressure test control structure, and the pressure test control structure is arranged on the pressure test installation frame.

Furthermore, the linkage device also comprises a distribution unit, wherein a liquid inlet of the distribution unit is connected with an outlet of the pressurization manifold structure, and an outlet of the distribution unit is connected with the plurality of sea pipes.

Compared with the prior art, the technical scheme provided by the application has the following advantages:

according to the technical scheme, when the submarine pipeline is debugged in advance, the submarine pipeline is cleaned through the pigging unit. When cleaning the submarine pipeline, a pipe cleaner needs to be pushed into the submarine pipeline for cleaning, and when the pipe cleaner is pushed to clean the submarine pipeline, a certain pressure needs to be input to push the pipe cleaner to clean along the submarine pipeline. At this time, the dyeing agent is input into the submarine pipeline through the matching of the first dyeing agent manifold structure and the pigging manifold structure, and the dyeing agent is spread along the submarine pipeline under the pushing of the pressure. When the submarine pipeline has a leakage position, the coloring agent can flow out along the leakage position, so that the leakage point of the submarine pipeline is easy to find. When the structure is used for cleaning the submarine pipeline, the leakage point of the submarine pipeline can be detected, so that the time for specially detecting the leakage of the submarine pipeline is greatly saved, and the manpower and material resources are saved. The technical scheme of this application has solved the preliminary debugging cycle of the sea pipe among the prior art longer effectively, the great problem of human cost and equipment cost.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive labor.

FIG. 1 shows a front perspective view of an embodiment of a pig unit of the marine work linkage of the present application;

FIG. 2 shows a schematic perspective view of another angle of the pigging unit of FIG. 1;

FIG. 3 shows a schematic view of the internal piping connections of the pig unit of FIG. 1;

fig. 4 shows a schematic connection diagram of a pigging manifold structure of the pigging unit of fig. 1;

fig. 5 shows a schematic front perspective view of a pressure test unit of the marine vessel work linkage;

FIG. 6 shows a schematic view of a partial internal piping structure of the pressure test unit of FIG. 5;

FIG. 7 shows a schematic structural view of a pressurized manifold structure of the pressure testing unit of FIG. 5;

FIG. 8 shows a schematic perspective view of a distribution unit of the linkage for marine operations;

fig. 9 shows a schematic view of the internal piping connection of the dispensing unit of fig. 8.

Wherein the figures include the following reference numerals:

10. a pigging unit; 11. a pigging and mounting frame; 12. a pigging manifold structure; 121. a pigging venturi tube section; 122. a pigging filter tube section; 123. a first branch pipe; 124. a second branch pipe; 125. a first valve; 126. a second valve; 127. a centrifugal pump; 128. a liquid outlet pipe section; 13. a first stain manifold structure; 14. a first corrosion inhibitor manifold structure; 15. a pigging control structure; 20. a pressure test unit; 21. a pressure test installation frame; 22. a pressurized manifold structure; 221. a pressure test venturi section; 222. a primary pressure test filter tube section; 223. a third valve; 224. a secondary pressure test filtering pipe section; 225. an underwater plunger pump; 226. an underwater safety valve pipe section; 227. a fourth valve; 228. a liquid inlet pipe section; 23. a second stain manifold structure; 24. a second corrosion inhibitor manifold structure; 25. a pressure test control structure; 30. a distribution unit; 31. feeding a pipe; 32. and (6) discharging the pipe.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

As shown in fig. 1 to 9, the linkage device for marine vessel work of the present embodiment includes: pigging unit 10 the pigging unit 10 comprises a pigging mounting frame 11, a pigging manifold structure 12 and a first stain manifold structure 13, the pigging manifold structure 12 and the first stain manifold structure 13 each being arranged on the pigging mounting frame 11. The pigging manifold structure 12 comprises a pigging venturi section 121 and the first dye manifold structure 13 is connected to the pigging venturi section 121.

According to the technical scheme of the embodiment, when the submarine pipeline is debugged in advance, the submarine pipeline is cleaned through the pigging unit 10. When cleaning the submarine pipeline, a pipe cleaner needs to be pushed into the submarine pipeline for cleaning, and when the pipe cleaner is pushed to clean the submarine pipeline, a certain pressure needs to be input to push the pipe cleaner to clean along the submarine pipeline. At this time, the dyeing agent is input to the submarine pipeline through the cooperation of the first dyeing agent manifold structure 13 and the pigging manifold structure 12, and the dyeing agent is spread along the submarine pipeline under the pushing of the above-mentioned pressure. When the submarine pipeline has a leakage position, the coloring agent can flow out along the leakage position, so that the leakage point of the submarine pipeline is easy to find. When the structure is used for cleaning the submarine pipeline, the leakage point of the submarine pipeline can be detected, so that the time for specially detecting the leakage of the submarine pipeline is greatly saved, and the manpower and material resources are saved. The technical scheme of this embodiment has solved the preliminary debugging cycle of sea pipe among the prior art longer effectively, the great problem of human cost and equipment cost.

As shown in fig. 4, in the technical solution of this embodiment, the pigging manifold structure 12 further includes a pigging filter pipe section 122, a first branch pipe 123, a second branch pipe 124, a first valve 125, a second valve 126, a centrifugal pump 127 and a liquid outlet pipe section 128, the pigging filter pipe section 122 is connected to the liquid inlet end of the pigging venturi pipe section 121, the first branch pipe 123 and the second branch pipe 124 are connected in parallel to the liquid outlet end of the pigging venturi pipe section 121, the first end of the liquid outlet pipe section 128 is connected to both the liquid outlet end of the first branch pipe 123 and the liquid outlet end of the second branch pipe 124, the first valve 125 is disposed on the first branch pipe 123, and the second valve 126 and the centrifugal pump 127 are disposed on the second branch pipe 124. The parallel arrangement of the first branch pipe 123 and the second branch pipe 124 can realize that when no pipeline PIG (also called PIG or ball) is introduced, the seawater enters the pipe section 122 of the pipe cleaner from the pipe cleaner under the natural pressure of the seawater and then enters the sea pipe through the first branch pipe 123; when the pipeline cleaner is needed to clean the pipeline, seawater is pumped into the sea pipe through the centrifugal pump 127, and the pipeline cleaner is pushed to move along the sea pipe under the continuous input pressure of the centrifugal pump 127 to clean the pipeline. The first branch pipe 123 in fig. 4 is further provided with a throttle valve to avoid accidents or losses due to excessive flow. It should be noted that a launching tube may be disposed between the pigging manifold structure 12 and the sea pipe for installing the pig.

As shown in fig. 3, in the solution of the present embodiment, the pigging unit 10 further comprises a first corrosion inhibitor manifold structure 14, and the first corrosion inhibitor manifold structure 14 is connected to the pigging venturi section 121. The first corrosion inhibitor manifold structure 14 comprises a first corrosion inhibitor tank and a first corrosion inhibitor pipeline communicated with the first corrosion inhibitor tank, the first corrosion inhibitor manifold structure 14 can effectively protect the pipeline from corrosion, the seawater contains high salt, if no corrosion inhibitor is added, the corrosion speed of the marine pipe is high under normal conditions, and the corrosion speed of the marine pipe (submarine pipeline) can be greatly reduced after the corrosion inhibitor is added.

As shown in fig. 1, in the solution of this embodiment, the pigging unit 10 further includes a pigging control structure 15, the pigging control structure 15 is disposed on the pigging mounting frame 11, and the pigging control structure 15 is electrically connected to both the first stain manifold structure 13 and the first corrosion inhibitor manifold structure 14. The provision of the pigging control structure 15 greatly facilitates automation. It should be noted that electromagnetic valves are disposed on the first stain manifold structure 13 and the first corrosion inhibitor manifold structure 14, and the make-and-break of the stain and the corrosion inhibitor or the adjustment of the size of the valve opening can be realized through the pigging control structure 15. Further, the valves on the manifold structure 12 are also solenoid valves, and the solenoid valves on the manifold structure 12 are also electrically connected to the manifold control structure 15. The pigging manifold structure 12 further comprises a flow meter which is electrically connected to the pigging control structure 15, which further enhances the automated control of the pigging unit 10. Further, the structure on the pig unit 10 is provided with a structure for underwater robot operation, which greatly improves the safety of construction for workers.

It should be noted that the structure can launch a spherical pig and a spherical caliper.

As shown in fig. 5 to 7, in the present embodiment, the linkage device further includes: and a pressure test unit 20. The pressure test unit 20 includes a pressure test installation frame 21, a pressurization manifold structure 22, and a second coloring agent manifold structure 23, and the pressurization manifold structure 22 and the second coloring agent manifold structure 23 are both disposed on the pressure test installation frame 21. The pressurization manifold structure 22 includes a pressure test venturi section 221, and the second stain manifold structure 23 is connected to the pressure test venturi section 221. The pressure test venturi section 221 realizes negative pressure adsorption of the dyeing agent and the corrosion inhibitor without manually adding the dyeing agent and the corrosion inhibitor.

As shown in fig. 6 and 7, in the technical solution of the present embodiment, the pressurization manifold structure 22 further includes a primary pressure test filter pipe section 222, a third valve 223, and a secondary pressure test filtering pipe section 224, the third valve 223 is located between the primary pressure test filter pipe section 222 and the pressure test venturi pipe section, and the secondary pressure test filtering pipe section 224 is connected to an end of the pressure test venturi pipe section facing away from the third valve 223. The primary filtering is realized by the primary pressure test filter pipe section 222, the secondary pressure test filtering pipe section 224 is used for secondary filtering, the third valve 223 can realize flow control or on-off, and the third valve 223 is provided with a solenoid valve, so that automatic control is conveniently realized.

As shown in fig. 6 and 7, in the technical solution of this embodiment, the pressurization manifold structure 22 further includes a submerged plunger pump 225, a submerged safety valve pipe section 226, a fourth valve 227, and a liquid inlet pipe section 228, the submerged plunger pump 225 is connected to an end of the second-stage pressure-testing filtering pipe section 224 away from the pressure-testing venturi pipe section, both the submerged safety valve pipe section 226 and the liquid inlet pipe section 228 are connected to the submerged plunger pump 225, and the fourth valve 227 is disposed on the liquid inlet pipe section 228. The underwater plunger pump 225 can provide larger pressure for pressure testing, and the secondary pressure testing filtering pipe section 224 is arranged at the downstream of the pressure testing Venturi pipe section, so that the secondary filtering pipe section can filter pressure testing liquid, corrosion inhibitor and coloring agent, and the underwater plunger pump 225 is prevented from being damaged. The fourth valve 227 is a high pressure discharge valve, and the fourth valve 227 may be provided in plural numbers along the axial direction of the liquid inlet pipe section 228.

As shown in fig. 6 and fig. 7, in the technical solution of the present embodiment, the pressure test unit 20 further includes a second corrosion inhibitor manifold structure 24, and the second corrosion inhibitor manifold structure 24 is connected to the pressure test venturi section 221. The second corrosion inhibitor manifold structure 24 includes a second corrosion inhibitor tank and a second corrosion inhibitor pipeline, and the second corrosion inhibitor pipeline is communicated with the second corrosion inhibitor tank. The second colorant manifold structure 23 includes a second colorant tank and a second colorant line in communication with the second colorant tank.

As shown in fig. 5, in the technical solution of the present embodiment, the pressure test unit 20 further includes a pressure test control structure 25, and the pressure test control structure 25 is disposed on the pressure test mounting frame 21. The pressure test control structure 25 is electrically connected with the pressurizing manifold structure 22, the second coloring agent manifold structure 23 and the second corrosion inhibitor manifold structure 24, and electromagnetic valves, detection instruments and the like arranged on the pressurizing manifold structure 22, the second coloring agent manifold structure 23 and the second corrosion inhibitor manifold structure 24 are electrically connected with the pressure test control structure 25, so that the automation degree of the pressure test unit 20 is greatly improved, and the risk of personnel operation is reduced.

As shown in fig. 8 and 9, in the technical solution of the present embodiment, the linkage device further includes a distribution unit 30, a liquid inlet of the distribution unit 30 is connected to an outlet of the pressurization manifold structure 22, and an outlet of the distribution unit 30 is connected to a plurality of sea pipes. The distribution unit 30 has one inlet pipe 31 and a plurality of outlet pipes 32, and may have a plurality of inlet pipes 31 and a plurality of outlet pipes 32. The distribution unit 30 includes a control structure, and the pipelines of the distribution unit 30 are provided with electromagnetic valves, and the control structure is electrically connected with the electromagnetic valves, so that the control structure can control the parameters of pressure, flow and the like of each pipeline. In particular, there may be a plurality of sea pipes, and the efficiency may be greatly improved by the distribution unit 30. The solenoid valve is a plurality of, and a plurality of solenoid valves and a plurality of exit tubes set up one-to-one.

Therefore, the deep sea pre-debugging device (the linkage device for the marine pipe operation) mainly comprises three parts: the deep sea pre-debugging device can realize the operations of cleaning, pressure testing and preprocessing of submarine pipelines under the coordination of an ROV (underwater robot) and an operation ship, and can realize the addition of chemical agents (slow release agents and coloring agents) of the submarine pipelines to meet the requirements of pipeline pre-debugging operation.

The pigging unit 10:

pipe cleaning and prying: the device mainly comprises a sledge frame, an operation system (a pigging control structure 15), a liquid adding system, a suction and discharge manifold system and the like. The underwater cleaning pipe sledge extends out of a hose to serve as a water filling pipe, the end part of the water filling pipe is provided with a quick connector, and underwater quick connection with an upper connector of the pitching barrel can be achieved with the aid of an ROV.

The skid frame consists of a main frame (pigging installation frame 11), an anti-sinking plate, lifting lugs, ROV handrails, an anode zinc block and a protective net. The main frame is formed by welding H-shaped steel in a splicing manner, has the functions of bearing the weight of the whole equipment and providing an installation space for key components of the equipment; the anti-sinking plate is formed by welding a plurality of steel plates provided with circular holes in a splicing manner, so that the bearing capacity of the anti-sinking plate is increased while the weight is reduced, and the anti-sinking plate is provided with a small lifting lug, so that the whole anti-sinking device is convenient to retract; the lifting lugs are positioned above the skid frame and distributed at four positions above the main frame, and the strength of the lifting lugs meets the requirement of hoisting the whole pigging unit; the ROV handrail is welded with the main frame by a pipe material, and the design meets the standard requirement; a plurality of anode zinc blocks are arranged on the sledge body, and the corrosion of underwater work on the sledge body is reduced by adopting a sacrificial anode protection method.

The liquid adding system consists of a coloring agent tank, a corrosion inhibitor tank, a coloring agent manifold, a corrosion inhibitor manifold, a standby manifold and the like. Coloring agent manifold one end is connected the export of the coloring agent jar body top, the venturi below interface is connected to one end: when the flow velocity of the seawater in the venturi tube is increased, the pressure can be reduced, the pressure intensity in the coloring agent tank is greater than the pressure intensity in the venturi tube, and the coloring agent in the coloring agent tank can be pressed into the venturi tube to enter the main pipeline. One end of the coloring agent manifold controls a coloring agent suction switch valve and a coloring agent flow control valve on the panel: the dyeing agent suction switch valve controls the inlet and outlet of the dyeing agent, and the dyeing agent flow control valve ensures the output flow of the dyeing agent. The other end of the staining agent manifold is connected with a staining agent adding port (an external ROV quick connector): when the coloring agent in the tank body is insufficient, the ROV supplements the tank body with the coloring agent through the quick connector. The whole stain manifold is communicated with the inside and is connected by a high-pressure joint. Similarly, one end of the slow-release agent manifold is connected with an outlet above the corrosion inhibitor tank body, the other end of the slow-release agent manifold is connected with an interface below the Venturi tube, one end of the slow-release agent manifold is connected with a corrosion inhibitor suction switch valve and a corrosion inhibitor flow control valve on the control panel, the other end of the slow-release agent manifold is connected with a corrosion inhibitor adding port (externally connected with an ROV quick coupling), and the whole corrosion inhibitor manifold is communicated with the inside and is connected by a high-pressure connector.

The suction and discharge manifold system is composed of an underwater centrifugal pump, an underwater filter, a main pipeline underwater ball valve, an underwater flow control valve, an underwater ball valve and the like. The main pipeline underwater ball valve is connected with seawater to control the seawater to enter the whole system; the underwater filter filters the entering seawater to ensure the precision of the seawater. The negative pressure effect of the Venturi tube controls the coloring agent and the corrosion inhibitor to enter the main pipeline. The centrifugal pump pressurizes the seawater in the main pipeline to make the seawater pumped out at a certain pressure, so as to achieve the purpose of cleaning the pipeline. The underwater flow control valve can adjust the flow of the seawater pumped out of the main pipeline in real time; the first underwater ball valve controls the sea water in the main pipeline to be pumped out; and the second underwater ball valve controls the opening and closing of the pipeline of the centrifugal pump. The switches of the main pipeline underwater ball valve, the underwater flow control valve, the first underwater ball valve and the second underwater ball valve are directly connected with a panel of the control system, so that the ROV can conveniently operate the switches of the valves.

The underwater pipeline cleaning sledge can carry out two operations of free water filling and ROV auxiliary water filling. In the free water filling state, the cleaning sledge fills water into the sea pipe by taking the water pressure difference between the inside and the outside of the sea pipe as power. The pipe inlet size (pigging skid outlet size) must be designed with the flow rate control of the water in mind, and the pigging skid is designed to avoid sand and organic organisms entering the pipe at this stage. Under the state of the auxiliary water filling of the ROV, a hydraulic pump of the ROV provides power for a centrifugal pump in the skid to implement sea pipe water filling.

During the water filling process, the facility performs operations such as filtering, chemical agent injection, pressure/flow metering and the like on the seawater flowing through the facility, and records the operation and metering data on a data acquisition system carried by the facility. In order to realize the operation of the ROV on the underwater pipeline cleaning sledge, an ROV butt joint platform, a valve for the operation of the ROV and an instrument interface are designed on the pipeline cleaning sledge. The skid frame of the whole skid can realize safety protection and hoisting work and prevent equipment from settling.

The pressure test unit 20:

underwater pressure test unit (pressure test unit): the device mainly comprises a sledge frame, an operation system, a liquid adding system, a suction and discharge manifold system and the like. The end part of the pressure test sledge pipeline is provided with a quick connector for underwater hot plug, and underwater quick connection with an upper interface of the launching tube can be realized under the assistance of the ROV. After the ROV is in an auxiliary water filling state or the deep sea pipeline flushing is completed, the ROV hydraulic system provides power for a seawater pressure test pump in the skid, and the pressure boosting operation of the sea pipeline is implemented. In the pressure test process, the equipment can carry out operations such as filtration, pressure/flow measurement and the like on the seawater flowing through the equipment, and records operation and measurement data on a data acquisition system carried by the equipment.

The skid frame consists of a main frame, an anti-sinking plate, lifting lugs, ROV handrails, an anode zinc block and a protective net. The main frame is formed by welding H-shaped steel in a splicing manner, has the functions of bearing the weight of the whole equipment and providing an installation space for key components of the equipment; the anti-sinking plate is formed by welding a plurality of steel plates provided with circular holes in a splicing manner, so that the bearing capacity of the anti-sinking plate is increased while the weight is reduced, and the anti-sinking plate is provided with a small lifting lug, so that the whole anti-sinking device is convenient to retract; lifting lugs are positioned above the skid frame and distributed at four positions above the main frame, and the strength of the lifting lugs meets the requirement of lifting the whole pressure test unit; the ROV handrail is welded with the main frame by a pipe material, and the design meets the standard requirement; a plurality of anode zinc blocks are arranged on the sledge body, and the corrosion of underwater work on the sledge body is reduced by adopting a sacrificial anode protection method.

The liquid adding system comprises a staining agent tank, a corrosion inhibitor tank, a staining agent manifold, a corrosion inhibitor manifold, a standby manifold and the like. Coloring agent manifold one end is connected the export of the coloring agent jar body top, the connector below the venturi is connected to one end: when the flow velocity of the seawater in the venturi tube is increased, the pressure can be reduced, the pressure intensity in the coloring agent tank is greater than the pressure intensity in the venturi tube, and the coloring agent in the coloring agent tank can be pressed into the venturi tube to enter the main pipeline. One end of the control panel is connected with a dyeing agent suction switch valve and a dyeing agent flow control valve on the control panel: the dyeing agent suction switch valve controls the inlet and outlet of the dyeing agent, and the dyeing agent flow control valve ensures the output flow of the dyeing agent. The other end is connected with a coloring agent adding port (external ROV quick connector): when the coloring agent in the tank body is insufficient, the ROV supplements the tank body with the coloring agent through the quick connector. The whole coloring agent manifold is communicated with the inside and is connected by a high-pressure joint. Similarly, the slow-release agent manifold has one end connected with an outlet above the corrosion inhibitor tank body and one end connected with an interface below the venturi tube, one end connected with a corrosion inhibitor suction switch valve and a corrosion inhibitor flow control valve on the control panel, and the other end connected with a corrosion inhibitor adding port (external ROV quick coupling), and the whole corrosion inhibitor manifold is communicated internally and connected by a high-pressure joint.

The suction and discharge manifold system consists of a primary filter, a main pipeline ball valve, a Venturi tube, a secondary filter, an underwater plunger pump, a high-pressure discharge ball valve and an underwater safety valve. The main pipeline ball valve is connected with seawater to control the seawater to enter the whole system. The underwater plunger pump is started to carry out pressure testing on a pressure testing pipeline, remote pressure regulation can be carried out, seawater is filtered in two stages, the precision of the seawater entering the underwater plunger pump is guaranteed not to be higher than the required precision, and when the pressure rises to a certain value, the pressure testing is finished.

The distribution unit 30:

the distribution unit 30: the distribution unit integrates a valve group, a pressure sensor, a data acquisition system and other underwater operation devices for pressure distribution in a pressure test process. The underwater distribution unit has two pressure test distribution functions of an underwater pressure test channel of a ship downlink and an underwater pressure test sledge pressure test channel. The front end part of the pressure test sledge is provided with an underwater quick connector, so that the quick connection of a downlink pipe or an underwater pressure test sledge and a distribution unit sledge can be realized. All pipelines can be connected with the underwater distribution unit sleds and the deep sea pipelines through the downlines or the underwater pressure test sleds under the ROV in an auxiliary water filling state of the ROV or after the deep sea pipelines are filled with water. And in the process of testing the pressure of the pipeline, the equipment can detect the pressure, the temperature and the like.

The underwater distribution unit mainly comprises a skid frame, a clear water manifold system, an operation system, a data acquisition system and the like.

The skid frame consists of a main frame, an anti-sinking plate, lifting lugs, ROV handrails, an anode zinc block and a protective net. The main frame is formed by welding H-shaped steel in a splicing manner, has the functions of bearing the weight of the whole equipment and providing an installation space for key components of the equipment; the anti-sinking plate is formed by welding a plurality of steel plates provided with circular holes in a spliced manner, so that the bearing capacity of the anti-sinking plate is increased while the weight is reduced, and the anti-sinking plate is provided with a small lifting lug, so that the whole anti-sinking device can be conveniently folded and unfolded; the lifting lugs are positioned above the skid frame and distributed at four positions above the main frame, and the strength of the lifting lugs meets the requirement of lifting of the whole distribution unit; the ROV handrail is welded with the main frame by a pipe material, and the design meets the standard requirement; a plurality of anode zinc blocks are arranged on the sledge body, and the corrosion of underwater work on the sledge body is reduced by adopting a sacrificial anode protection method.

The clear water manifold system comprises an inlet main pipeline valve, a discharge main pipeline valve, a safety valve, a pipeline, a high-pressure joint and the like. The inlet main pipeline valve is connected with an inlet valve of the control panel to control clean water to enter the whole manifold system; the valve of the main discharging pipeline is connected with a switch of the main discharging pipeline to control the clear water to be discharged out of the manifold system; the branch pipeline safety valve controls the pressure of the branch pipe, and when the pressure is too high, the safety valve is opened to release the pressure; the branch pipeline emptying ball valve is used for releasing redundant water and impurities in the branch pipeline; the discharge branch pipeline safety valve controls the pressure of the discharge branch pipeline, and when the pressure of the discharge branch pipeline is too high, the discharge branch pipeline safety valve is opened to release the pressure; the discharge branch pipeline emptying ball valve is used for releasing redundant water and impurities in the discharge branch pipeline; the ball valve of the main discharging pipeline controls the opening and closing of the clean water of the main discharging pipeline. The outlet is connected with the outlet of the control panel and is an outlet of the manifold system; similarly, the outlet is connected with the outlet of the control panel and is an outlet of the manifold system. The distribution unit can be externally connected with a pipeline of a clean water manifold system.

It is noted that, in this document, relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising a … …" does not exclude the presence of another identical element in a process, method, article, or apparatus that comprises the element.

The above description is only exemplary of the invention, and is intended to enable those skilled in the art to understand and implement the 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 (10)

1. A linkage device for marine operations, comprising:

a pigging unit (10), the pigging unit (10) comprising a pigging mounting frame (11), a pigging manifold structure (12) and a first stain manifold structure (13), the pigging manifold structure (12) and the first stain manifold structure (13) both being arranged on the pigging mounting frame (11);

the pigging manifold structure (12) comprises a pigging venturi section (121), and the first coloring agent manifold structure (13) is connected with the pigging venturi section (121).

2. The marine pipework linkage of claim 1, wherein the pigging manifold structure (12) further comprises a pigging filter pipe section (122), a first branch pipe (123), a second branch pipe (124), a first valve (125), a second valve (126), a centrifugal pump (127) and a liquid outlet pipe section (128), the pigging filter pipe section (122) is connected to the liquid inlet end of the pigging venturi section (121), the first branch pipe (123) and the second branch pipe (124) are connected in parallel at the liquid outlet end of the pigging venturi section (121), the first end of the liquid outlet pipe section (128) is connected to both the liquid outlet end of the first branch pipe (123) and the liquid outlet end of the second branch pipe (124), the first valve (125) is disposed on the first branch pipe (123), and the second valve (126) and the centrifugal pump (127) are disposed on the second branch pipe (124).

3. A marine pipe work linkage according to claim 1, characterised in that the pig unit (10) further comprises a first corrosion inhibitor manifold structure (14), the first corrosion inhibitor manifold structure (14) being connected to the pig venturi section (121).

4. Linkage for marine operations according to claim 3, characterised in that the pigging unit (10) further comprises a pigging control structure (15), the pigging control structure (15) being arranged on the pigging mounting frame (11), the pigging control structure (15) being electrically connected with both the first stain manifold structure (13) and the first corrosion inhibitor manifold structure (14).

5. The marine tubular work linkage as claimed in claim 1, further comprising: the pressure testing device comprises a pressure testing unit (20), wherein the pressure testing unit (20) comprises a pressure testing installation frame (21), a pressurizing manifold structure (22) and a second coloring agent manifold structure (23), and the pressurizing manifold structure (22) and the second coloring agent manifold structure (23) are arranged on the pressure testing installation frame (21);

pressurization manifold structure (22) include pressure testing venturi section (221), second colorant manifold structure (23) with pressure testing venturi section (221) link to each other.

6. The marine vessel work linkage according to claim 5, wherein the pressurization manifold structure (22) further comprises a primary pressure test filter pipe section (222), a third valve (223), and a secondary pressure test filter pipe section (224), the third valve (223) being located between the primary pressure test filter pipe section (222) and the pressure test venturi section, the secondary pressure test filter pipe section (224) being connected at an end of the pressure test venturi section facing away from the third valve (223).

7. The marine pipework linkage of claim 6 wherein the pressurization manifold structure (22) further comprises a subsea plunger pump (225), a subsea safety valve spool (226), a fourth valve (227), and a feed spool (228), the subsea plunger pump (225) being connected to the end of the secondary pressure test filter spool (224) remote from the pressure test venturi, the subsea safety valve spool (226) and the feed spool (228) both being connected to the subsea plunger pump (225), the fourth valve (227) being disposed on the feed spool (228).

8. Linkage for marine pipe work according to claim 5, characterised in that the pressure test unit (20) further comprises a second corrosion inhibitor manifold structure (24), the second corrosion inhibitor manifold structure (24) being connected to the pressure test venturi section (221).

9. The marine vessel work linkage device according to claim 5, wherein the pressure test unit (20) further comprises a pressure test control structure (25), the pressure test control structure (25) being provided on the pressure test mounting frame (21).

10. A marine vessel working linkage according to claim 5, further comprising a distribution unit (30), wherein the liquid inlet of the distribution unit (30) is connected to the outlet of the pressurised manifold structure (22), and wherein the outlet of the distribution unit (30) is connected to a plurality of marine vessels.

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