CN115450976B - Hydraulic control system for three-dimensional mapping device of dry cabin of submarine pipeline - Google Patents

Abstract

The invention discloses a hydraulic control system of a dry cabin three-dimensional mapping device for a submarine pipeline, and relates to the technical field of ocean engineering; the hydraulic oil pump station comprises an eight-function switch valve box, wherein four hydraulic motor control loops, two opening and closing oil cylinder control loops and two standby loops are arranged in the eight-function switch valve box, and an oil inlet and an oil return port of each loop are respectively connected with a deck hydraulic pump station; the opening and closing oil cylinder control loop is used for controlling the opening and closing oil cylinder to open and close the cabin body and hold the pipeline body tightly; the hydraulic motor control loop is used for controlling the hydraulic winch to tighten the external cement block so as to balance the buoyancy of the whole system; therefore, the invention can ensure the normal action and the function of the dry cabin three-dimensional laser mapping device applied to the submarine pipeline.

Description

A hydraulic control system for a dry tank three-dimensional mapping device for submarine pipelines

Technical Field

The present invention relates to the field of marine engineering technology, and in particular to a hydraulic control system of a dry tank three-dimensional mapping device for a submarine pipeline.

Background Art

In the underwater production system of marine engineering, submarine oil and gas pipelines are very important transportation equipment. Facing the harsh marine environment, submarine oil and gas pipelines may be damaged by external factors at any time, causing deformation or even rupture. In order to ensure the normal operation of submarine oil and gas pipelines, it is crucial to repair damaged and deformed submarine oil and gas pipelines in a timely manner. Before repairing submarine oil and gas pipelines, it is particularly important to accurately and reliably measure the deformation of the damaged parts. The hydraulic control system of the dry tank three-dimensional laser mapping device for submarine pipelines is an important link to ensure the normal operation of the mapping device, which deserves in-depth research.

At present, hydraulic control systems are often used in underwater robots and marine engineering equipment at home and abroad, such as hydraulic manipulators, hydraulic working tools, etc. Hydraulic control systems have many advantages: they can achieve a wide range of stepless speed regulation, small size, light weight, good dynamic characteristics, etc. In order to ensure the normal operation and function of the dry tank three-dimensional laser mapping device used in submarine pipelines, it is necessary to develop a hatch opening and closing and buoyancy balance hydraulic control system suitable for the dry tank three-dimensional laser mapping device.

Summary of the invention

The purpose of the present invention is to provide a hydraulic control system for a dry tank three-dimensional mapping device for submarine pipelines to solve the problems existing in the above-mentioned prior art and to ensure the normal operation and function of the dry tank three-dimensional laser mapping device applied to submarine pipelines.

To achieve the above object, the present invention provides the following solutions:

The present invention provides a hydraulic control system for a dry tank three-dimensional mapping device for a submarine pipeline, which mainly comprises a deck hydraulic pump station, an eight-function switch valve box, an opening and closing oil cylinder, a hydraulic winch, an adjustable flow valve, a one-way valve, a three-position four-way electro-hydraulic valve, a relief valve, a balance valve, a switch valve group composed of a one-way valve and a relief valve, and a hydraulic motor. The eight-function switch valve box is provided with a four-way hydraulic motor control circuit, a two-way opening and closing oil cylinder control circuit and two-way standby circuits, and the oil inlet and the oil return port of each circuit are respectively connected to the deck hydraulic pump station; the opening and closing oil cylinder control circuit is used to control the opening and closing oil cylinder to open and close the cabin body and hold the pipeline body tightly, and a displacement sensor is built in the opening and closing oil cylinder, and the relative position of the oil cylinder can be checked in real time to determine whether the body of the mapping device is completely opened or closed; the hydraulic motor control circuit is used to control the hydraulic winch to tighten an external cement block, and the four-way hydraulic winch solves the problem of floating caused by increased drainage buoyancy after the empty cabin of the mapping device is closed by tightening the external cement block, and balances the buoyancy of the entire system. The deck hydraulic pump station is a 22KW deck hydraulic pump station, which mainly provides the necessary power for the hydraulic system. The eight-function switch valve box is an integrated unit of the hydraulic control valve. The valve box circuit board uses solid components instead of packaged components, and then uses discrete components to build a crystal oscillator. The interior of the eight-function switch valve box is completely sealed and filled with oil to solve the problem of the circuit board in the valve box being able to withstand pressure on the seabed. All the interfaces of the eight-function switch valve box are equipped with quick connectors. In case of an emergency, it can solve the problem that the cabin cannot be opened and the winch cannot be released, providing favorable protection for underwater pipeline operations.

Optionally, the oil inlets of the four hydraulic motor control circuits, the two opening and closing cylinder control circuits and the two backup circuits are respectively connected to the deck hydraulic pump station through the oil inlets of their respective corresponding three-position four-way electro-hydraulic valves, and the oil return ports of the four hydraulic motor control circuits, the two opening and closing cylinder control circuits and the two backup circuits are respectively connected to the deck hydraulic pump station through the oil return ports of their respective corresponding three-position four-way electro-hydraulic valves; the oil inlet of the three-position four-way electro-hydraulic valve is connected to the deck hydraulic pump station through an adjustable flow valve, and the oil return port of the three-position four-way electro-hydraulic valve is connected to the deck hydraulic pump station through a one-way valve.

Optionally, the hydraulic motor control circuit includes a hydraulic motor, the oil inlet of the hydraulic motor is connected to the first working oil port of the corresponding three-position four-way electro-hydraulic valve through a motor oil inlet pipeline, and the oil return port of the hydraulic motor is connected to the second working oil port of the corresponding three-position four-way electro-hydraulic valve through a motor oil return pipeline.

Optionally, in order to improve the safety and reliability of the control system, a tension control valve block is provided on the motor oil inlet pipeline to control the maximum tension of the winch and prevent the winch from overloading; a winch balance valve is provided on the motor oil return pipeline to play the role of load maintenance and circuit locking.

Optionally, the tension control valve block is composed of an overflow valve and a one-way valve; the winch balance valve is composed of a throttle valve and a one-way valve.

Optionally, the hydraulic motor control circuit further includes a winch brake cylinder, the winch brake cylinder is connected to a shuttle valve via a hydraulic pipeline, and the shuttle valve is respectively connected to a motor oil inlet pipeline and a motor oil return pipeline of the hydraulic motor.

Optionally, the oil inlet and oil return port of the opening and closing cylinder are respectively connected to the cylinder balance valve, which plays the role of load holding and circuit locking. The cylinder balance valve is respectively connected to the first working oil port and the second working oil port of the corresponding three-position four-way electro-hydraulic valve through two hydraulic pipelines.

Optionally, the oil drain port of the hydraulic motor is connected to the oil drain port of the deck hydraulic pump station through an oil drain pipeline.

Compared with the prior art, the present invention has achieved the following technical effects:

The eight-function switch valve box of the hydraulic control system of the dry tank three-dimensional mapping device for submarine pipelines of the present invention simplifies the overall oil circuit, saves hydraulic oil pipes, prevents the entanglement of underwater hydraulic oil pipes, and improves the safety of the mapping device. The present invention overcomes the pressure resistance problem of the submarine valve box circuit board and has the characteristics of no pollution, zero emission, and good stability. It can meet the basic functions of the dry tank laser mapping device. During operation, the hydraulic winch stabilization device can be quickly adjusted through the hydraulic control circuit to balance the buoyancy. At the same time, while the device is in place, the six oil cylinders can be synchronized to quickly open and close the device door, thereby improving the responsiveness of the system.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

FIG1 is a schematic diagram showing the principle of a hydraulic control system of a dry tank three-dimensional mapping device for a submarine pipeline according to the present invention;

Explanation of the accompanying drawings: 1-adjustable flow valve, 2-check valve, 3-three-position four-way electro-hydraulic valve, 4-tension control valve block, 5-shuttle valve, 6-winch balance valve, 7-hydraulic motor, 8-winch brake cylinder, 9-cylinder balance valve, 10-opening and closing cylinder.

DETAILED DESCRIPTION

The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

The purpose of the present invention is to provide a hydraulic control system for a dry tank three-dimensional mapping device for submarine pipelines to solve the problems existing in the above-mentioned prior art and to ensure the normal operation and function of the dry tank three-dimensional laser mapping device applied to submarine pipelines.

In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

As shown in FIG1 , the present invention provides a hydraulic control system for a dry tank three-dimensional mapping device for a submarine pipeline, comprising a tension control valve block 4, a winch balance valve 6, a hydraulic motor 7, and a cylinder balance valve 9. The 22KW deck hydraulic pump station is connected to an eight-function hydraulic valve box through a hydraulic pipeline, and is connected to a three-position four-way electro-hydraulic valve 3 through an adjustable throttle valve 1. The oil inlet of the hydraulic motor 7 is connected to its corresponding tension control valve block 4 and three-position four-way electro-hydraulic valve 3 in sequence through a hydraulic pipeline. The oil return port of the hydraulic motor 7 is connected to its corresponding three-position four-way electro-hydraulic valve 3 through a hydraulic pipeline with a winch balance valve 6 composed of a throttle valve and a one-way valve. The oil return port of the three-position four-way electro-hydraulic valve 3 is connected to the 22KW deck hydraulic pump station through a one-way valve 2. The winch brake cylinder 8 is connected to the shuttle valve 5 through a hydraulic pipeline, and the shuttle valve 5 is connected to the oil inlet and oil return port of the hydraulic motor 7 respectively. The oil inlet and oil return port of the opening and closing cylinder 10 are respectively connected to the corresponding cylinder balance valve 9, and the cylinder balance valve 9 is respectively connected to the first working oil port and the second working oil port of the corresponding three-position four-way electro-hydraulic valve through two hydraulic pipelines.

When the hydraulic control system of the surveying and mapping device of the present invention is working, the hydraulic winch needs to be opened or tightened, and the valve core of the three-position four-way electro-hydraulic valve 3 should be in the right position at this time. The oil inlet P of the three-position four-way electro-hydraulic valve 3 is connected to the first working oil port A of the three-position four-way electro-hydraulic valve 3. The hydraulic pressure enters the oil inlet P of the three-position four-way electro-hydraulic valve 3 through the adjustable flow valve 1 from the 22KW hydraulic pump station, and enters the hydraulic winch control module from the first working oil port A. The hydraulic oil is divided into two paths, one path passes through the tension control valve block 4 composed of the overflow valve and returns to the second working oil port B of the three-position four-way electro-hydraulic valve 3; the other path passes through the hydraulic motor 7 and the winch balance valve 6 and returns to the second working oil port B of the three-position four-way electro-hydraulic valve 3. The second working oil port B is now connected to the oil return port T of the three-position four-way electro-hydraulic valve 3, and the hydraulic oil returns to the 22KW deck hydraulic pump station through the one-way valve 2. In addition, the hydraulic oil enters the winch brake cylinder 8 through the hydraulic motor 7 to control the winch action. The hydraulic oil entering the winch brake cylinder 8 returns to the oil inlet and oil return port of the hydraulic winch control module through the first working oil port and the second working oil port of the shuttle valve 5 respectively. When the opening and closing cylinder 10 needs to be opened or closed, similarly, the valve core of the corresponding three-position four-way electro-hydraulic valve 3 is in the right position, and the oil inlet P of the three-position four-way electro-hydraulic valve 3 is connected to the first working oil port A of the three-position four-way electro-hydraulic valve 3. The hydraulic pressure enters the oil inlet P of the three-position four-way electro-hydraulic valve 3 through the adjustable flow valve 1 from the 22KW hydraulic pump station, and enters the opening and closing cylinder control module through the first working oil port A. The hydraulic oil enters the opening and closing cylinder 10 through the cylinder balance valve 9 to complete the action, and then returns to the second working oil port B of the three-position four-way electro-hydraulic valve 3 through another cylinder balance valve 9. The second working oil port B is now connected to the oil return port T of the three-position four-way electro-hydraulic valve 3, and the hydraulic oil returns to the 22KW deck hydraulic pump station through the one-way valve 2. When the hydraulic motor 7 and the opening and closing cylinder 10 need to be reversed, the valve core of the three-position four-way electro-hydraulic valve 3 is located in the left position, and its working principle is the same as that when the valve core of the three-position four-way electro-hydraulic valve 3 is located in the right position, so it is not repeated here; the hydraulic motor 7 is connected to the oil drain port L of the 22KW hydraulic pump station through the oil drain pipeline, thereby playing a certain role in lubrication, cooling and flushing.

In this embodiment, the tension control valve block 4 can control the maximum tension of the hydraulic winch to prevent the hydraulic winch from overloading. The winch balance valve 6 and the cylinder balance valve 9 can play the role of load holding and circuit locking, thereby improving the safety of the hydraulic control system. The two spare oil circuits can control the hydraulic winch and the opening and closing cylinders in an emergency. The eight-function switch valve box integrates the hydraulic system control of the dry tank mapping device, simplifies the hydraulic pipeline, and realizes the function of quickly and smoothly controlling the buoyancy of the mapping device and the opening and closing of the hatch of the mapping device underwater. The present invention can simultaneously and quickly control the retraction and extension of the hydraulic winch to achieve the purpose of quickly balancing the buoyancy. It can also quickly and synchronously control the opening and closing of the six-way cylinders, with high stability, reducing the risks to the mapping device underwater.

In the description of the present invention, it should be noted that the terms "center", "top", "bottom", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. At the same time, for those skilled in the art, according to the ideas of the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims (4)

1. A hydraulic control system for a dry tank three-dimensional mapping device for submarine pipelines, characterized in that it includes an eight-function switch valve box, in which four hydraulic motor control circuits, two opening and closing oil cylinder control circuits and two spare circuits are arranged, and the oil inlet and oil return port of each circuit are respectively connected to the deck hydraulic pump station; the opening and closing oil cylinder control circuit is used to control the opening and closing oil cylinder to open and close the cabin body and hold the pipeline body; the hydraulic motor control circuit is used to control the hydraulic winch to tighten the external cement block to balance the buoyancy of the entire system; the oil inlets of the four hydraulic motor control circuits, the two opening and closing oil cylinder control circuits and the two spare circuits are respectively connected to the deck hydraulic pump station through the oil inlets of their respective corresponding three-position four-way electro-hydraulic valves, and the four hydraulic motor control circuits, the two opening and closing oil cylinder control circuits and the two spare circuits are respectively connected to the deck hydraulic pump station through the oil inlets of their respective corresponding three-position four-way electro-hydraulic valves. The oil return ports of the backup circuit are respectively connected to the deck hydraulic pump station through the oil return ports of their corresponding three-position four-way electro-hydraulic valves; the oil inlet of the three-position four-way electro-hydraulic valve is connected to the deck hydraulic pump station through an adjustable flow valve, and the oil return port of the three-position four-way electro-hydraulic valve is connected to the deck hydraulic pump station through a one-way valve; the hydraulic motor control circuit includes a hydraulic motor, the oil inlet of the hydraulic motor is connected to the first working oil port of the corresponding three-position four-way electro-hydraulic valve through a motor oil inlet pipeline, and the oil return port of the hydraulic motor is connected to the second working oil port of the corresponding three-position four-way electro-hydraulic valve through a motor oil return pipeline; a tension control valve block is arranged on the motor oil inlet pipeline, and a winch balancing valve is arranged on the motor oil return pipeline; the tension control valve block is composed of an overflow valve and a one-way valve; the winch balancing valve is composed of a throttle valve and a one-way valve. 2. The hydraulic control system of the dry tank three-dimensional mapping device for submarine pipelines according to claim 1 is characterized in that: the hydraulic motor control circuit also includes a winch brake cylinder, the winch brake cylinder is connected to the shuttle valve through a hydraulic pipeline, and the shuttle valve is respectively connected to the motor oil inlet pipeline and the motor oil return pipeline of the hydraulic motor. 3. The hydraulic control system of the dry tank three-dimensional mapping device for submarine pipelines according to claim 1 is characterized in that the oil inlet and oil return port of the opening and closing cylinder are respectively connected to the cylinder balance valve, and the cylinder balance valve is respectively connected to the first working oil port and the second working oil port of the corresponding three-position four-way electro-hydraulic valve through two hydraulic pipelines. 4. The hydraulic control system of the dry tank three-dimensional mapping device for submarine pipelines according to claim 1 is characterized in that the oil drain port of the hydraulic motor is connected to the oil drain port of the deck hydraulic pump station through an oil drain pipeline.