WO2022021066A1

WO2022021066A1 - Submarine mobile cptu sounding equipment

Info

Publication number: WO2022021066A1
Application number: PCT/CN2020/105172
Authority: WO
Inventors: 王立忠; 洪义; 郑威威; 国振; 陈家旺; 魏艳
Original assignee: 浙江大学
Priority date: 2020-07-28
Filing date: 2020-07-28
Publication date: 2022-02-03

Abstract

A submarine mobile CPTu sounding equipment, comprising: an underwater heaving moving unit, the underwater heave moving unit comprising a support frame (3), a guide frame (7), water injection/drainage buoys (8), and vector propellers (1), the guide frame (7) being vertically fixed on the support frame (3); the water injection/drainage buoys (8) being symmetrically arranged on the support frame (3) and used for providing heave force; the vector propellers (1) being fixed on the guide frame (7) and used for providing advancing power; a CPTu probe assembly (4) mounted on the support frame (3) and guided by the guide frame (7); and a hydraulic propelling system (5) used for providing penetration force to the CPTu probe assembly. The present invention can increase operation depth of the CPTu sounding equipment, significantly improve movable operation capability, and have the advantages of being great in depth, high in mobility, miniature, and lightweight.

Description

A submarine mobile CPTu penetration equipment

technical field

The invention belongs to the technical field of marine observation and the field of marine engineering geology, and relates to a submarine mobile CPTu penetration equipment.

Background technique

my country's major offshore infrastructures under construction and planning (such as offshore wind power, offshore oil and gas platforms, offshore ranching platforms, etc.) rank among the top in the world, and the seabed foundation is its ultimate carrier. Under extreme marine environmental loads (such as typhoons, huge waves, etc.), the collapse or excessive inclination of offshore structural foundations often occurs, resulting in excessive conventional design redundancy. Safe and economical offshore structural foundation design mainly depends on efficient survey and scientific analysis of the mechanical properties of seabed strata. At present, the maximum operating water depth and penetration detection depth of the in-situ survey equipment for the mechanical properties of the seabed (mainly including the static penetration probe CPTu and its penetration equipment) cannot meet the operation needs of all depths in the sea areas of my country, and are generally aimed at single-point type. Fixed survey, lack of mobile multi-point high-efficiency survey equipment.

SUMMARY OF THE INVENTION

The purpose of the embodiments of the present invention is to provide a submarine mobile CPTu penetration equipment, so as to solve the problem that the maximum operating water depth and penetration detection depth existing in the existing survey equipment cannot meet the operation requirements of my country's sea areas, and generally cannot carry out mobile multi-point high-efficiency survey questions.

In order to achieve the above purpose, the technical solutions adopted in the embodiments of the present invention are as follows:

The embodiment of the present invention provides a submarine mobile CPTu penetration equipment, including:

An underwater heave movement unit, the underwater heave movement unit includes a support frame, a guide frame, a water-filling buoy and a vector thruster, the guide frame is vertically fixed on the support frame, and the water-filling and draining The buoys are symmetrically arranged on the support frame for providing heave force, and the vector thruster is fixed on the guide frame for providing traveling power;

CPTu probe rod assembly, the CPTu probe rod assembly is mounted on the support frame and guided by a guide frame;

A hydraulic propulsion system for providing penetration force to the CPTu probe assembly.

Further, the CPTu probe rod assembly is located in a symmetrical position in the center of the support frame.

Further, the described CPTu probe rod assembly includes a probe rod, a cone head, a water permeable filter and a friction cylinder, the cone head is fixed on the lower end of the probe rod, the friction cylinder is sleeved on the probe rod, and the water permeable filter is arranged After approaching the cone head, the cone head is used to measure the cone tip resistance, the water permeable filter is used to measure the excess pore water pressure, and the friction cylinder is used to measure the side friction resistance.

Further, the hydraulic propulsion system includes a hydraulic motor, an elastic clamping device and a friction wheel. The two elastic clamping devices are symmetrically distributed on both sides of the probe rod. Friction wheels are installed on the rotating shaft of each hydraulic motor, two friction wheels are symmetrically distributed on both sides of the probe rod and are in contact with the probe rod, and the elastic clamping device is fixed on the support frame.

Further, the elastic clamping device includes a fixed support, a control rod and a spring, the fixed support is hinged with the support frame, the hydraulic motor is installed on the fixed support, and the control rod is installed on the support. In the frame, one end of the spring is pressed against the fixed support, and the other end is pressed against the end of the control rod.

Further, it also includes: a static touch detection control system, the static touch detection control system includes an underwater crawling monitor for controlling the vector thruster and a hydraulic propulsion assembly monitor and control for controlling the hydraulic motor.

Further, the water injection and drainage buoy has a water inlet, a water outlet and an air inlet, and the water in the water injection and drainage buoy is discharged underwater by using high pressure gas through the air inlet.

Further, the water inlet and the water outlet are respectively provided with a water inlet valve and a water outlet valve.

Further, the total volume of the water-filling and draining buoys is 4-8 m ³ .

According to the above technical solution, compared with the existing seabed static penetration equipment, the submarine mobile CPTu penetration equipment of the present invention is greatly enhanced in the operating depth through the injection and drainage buoys, and the hydraulic propulsion system enables it to penetrate into the detection depth. It fully meets the operation needs of all depths in my country's sea areas; the mobile operation capability (subsea operation range and operation efficiency, etc.) through the vector thruster has been significantly improved compared with the existing mainstream seated static penetration equipment. In order to ensure that the penetration depth of the submarine mobile CPTu detection fully meets the needs of all depth operations in my country's waters, the overall volume and weight of the equipment can be reduced as much as possible during design and manufacturing, and the equipment has a large depth, high mobility, miniaturization, Lightweight product features and significant advantages.

Description of drawings

The accompanying drawings described herein are used to provide further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the attached image:

Fig. 1 is the front view of a kind of submarine mobile CPTu penetration equipment provided by the embodiment of the present invention;

Fig. 2 is the side view of a kind of submarine mobile CPTu penetration equipment provided by the embodiment of the present invention;

Fig. 3 is the top view of a kind of submarine mobile CPTu penetration equipment provided by the embodiment of the present invention;

4 is a schematic diagram of a CPTu probe rod assembly in an embodiment of the present invention;

FIG. 5 is a schematic diagram of a static touch detection control system in an embodiment of the present invention;

The reference numbers in the figure are as follows: 1—vector thruster; 2—small floating tugboat; 3—supporting frame; 4—CPTu probe rod assembly; 5—hydraulic propulsion system; 6—fixed support; 7—guide frame; 8 -Injection and drainage buoy; 9-Control rod; 10-Hydraulic motor; 11-Spring; 12-Elastic clamping device; 13-Friction wheel; 14-Probe rod; 15-Conical head; 16-Water permeable filter; 17-Friction 18—Underwater crawling monitor; 19—Hydraulic propulsion assembly monitor.

detailed description

In order to make the objectives, technical solutions and advantages of the present application clearer, the technical solutions of the present application will be clearly and completely described below with reference to the specific embodiments of the present application and the corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of the present application, but not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

As shown in Figures 1-5, an embodiment of the present invention provides a submarine mobile CPTu penetration equipment, including:

Underwater heave mobile unit, the underwater heave mobile unit includes a support frame 3, a guide frame 7, a water injection and drainage buoy 8 and a vector thruster 1, the support frame 3 is used for fixing the overall structure, the The guide frame 7 is vertically fixed on the support frame 3 , the water injection and drainage buoys 8 are symmetrically arranged on the support frame 3 to provide heave force, and the vector thruster 1 is fixed on the guide frame 7 , used to provide driving power;

The CPTu probe rod assembly 4, the CPTu probe rod assembly 4 is mounted on the support frame 3, and is guided by the guide frame 7 to ensure that the CPTu probe rod assembly 4 penetrates vertically into the soil;

The hydraulic propulsion system 5 is used to provide the penetration force to the CPTu probe rod assembly 4, and the maximum penetration detection depth is 30m, which is guaranteed to fully meet the operation requirements of all depths in the sea area of my country.

In this embodiment, the CPTu probe rod assembly 4 is preferably located at a centrally symmetrical position of the support frame 3 to ensure the stability of the touch probe equipment during operation.

In this embodiment, the water injection and drainage buoys 8 are symmetrically arranged on the support frame 3 and have a water inlet, a water outlet and an air inlet. The water inlet and the water outlet are respectively provided with a water inlet valve and a water outlet valve. The port uses high-pressure gas to discharge the water in the injection and drainage buoy 8 underwater, and its total volume is designed to be 4-8 m ³ , which can provide a total of 4-8 tons of buoyancy in the water, which is used to provide heave force and ensure the submarine mobile CPTu The penetration equipment can operate at a depth of 100m on the seabed.

In this embodiment, the vector thruster 1 is fixed on the guide frame 7 to provide traveling power, and at the same time, the propulsion direction can be adjusted, so that the penetration equipment can perform mobile multi-point high-efficiency survey in the shallow surface of the seabed. Compared with the existing mainstream seated static penetration equipment, its mobile operation capability is significantly improved.

In this embodiment, the CPTu probe rod assembly 4 includes a probe rod 14 , a cone head 15 , a water-permeable filter 16 and a friction cylinder 17 , the cone head 15 is fixed on the lower end of the probe rod 14 , and the friction cylinder 17 is sleeved on the probe rod 14 . On the probe rod 14, the water permeable filter 16 is arranged close to the cone head 15, and the wear of the sensor can be reduced under the condition of ensuring high measurement accuracy by reasonably selecting the position of the water permeable filter 16 and the friction cylinder 17. It should be noted that there are corresponding measuring sensors inside the cone head 15, the water permeable filter 16 and the friction cylinder 17, which can be built into them when the manufacturer produces them. 16 is used to measure the excess pore water pressure, and the friction cylinder 17 is used to measure the side friction resistance.

In this embodiment, the hydraulic propulsion system 5 includes a hydraulic motor 10, an elastic clamping device 12 and a friction wheel 13. The two elastic clamping devices 12 are symmetrically distributed on both sides of the probe rod 14. Each elastic clamping device A hydraulic motor 10 is installed on the 12, and a friction wheel 13 is installed on the rotating shaft of each hydraulic motor 10. The two friction wheels 13 are symmetrically distributed on both sides of the probe rod 14 and are in contact with the probe rod 14. The elastic force The clamping device 12 is fastened to the support frame 3 . The propulsion function of the probe rod 14 is mainly realized by the friction wheel 13. Its working principle is: the hydraulic motor 10 provides power to drive the friction wheel 13 to rotate. Friction and rotation, the propulsion rod 14 continuously penetrates into the formation; the two hydraulic motors 10 are installed on the elastic clamping device 12, and the elastic clamping device 12 is fixed on the support frame 3, thereby providing the opposite extrusion friction to ensure The penetrating rod 14 can penetrate smoothly.

Further, the elastic clamping device 12 includes a fixed support 6 , a control rod 9 and a spring 11 , the fixed support 6 is hinged with the support frame 3 , and the hydraulic motor 10 is installed on the fixed support 6 , the control rod 9 is installed in the support frame 3 , one end of the spring 11 is pressed against the fixed support 6 , and the other end is against the end of the control rod 9 . The control rod 9 can be in a manual form, for example, the control rod 9 is directly screwed (ie, screwed) on the support frame 3, and the rotation of the control rod 9 can achieve forward or backward, so that the elastic force of the spring 11 can be adjusted. Of course, an electric form can also be used, that is, an electric knob is used to realize forward or backward. The clamping force of the friction wheel 13 on the touch probe rod 14 can be adjusted by adjusting the elastic clamping device.

In this embodiment, in order to further improve the automation level of the mobile touch detection equipment, a submarine mobile CPTu touch detection equipment further includes: a static touch detection control system, and the static touch detection control system includes an underwater crawling detector. 18 and the hydraulic propulsion assembly monitor and control unit 19, wherein the underwater crawling monitor and control unit 18 is used to control the vector thruster 1, so that the penetration equipment can carry out mobile multi-point efficient survey on the shallow surface of the seabed, and improve its mobile operation capability; The hydraulic propulsion assembly monitor 19 is used to control the hydraulic motor 10 to provide penetration power for the CPTu probe rod assembly 4, with a maximum penetration detection depth of 30m, ensuring that it can fully meet the operation requirements of all depths in the sea area of my country. In this embodiment, the cores of the underwater crawling monitor and control unit 18 and the hydraulic propulsion assembly monitor and control unit 19 can be in the form of single-chip microcomputers. 18 and the upper and lower computer mode of the hydraulic propulsion assembly monitor 19.

The static touch detection control system mainly completes the control of the vector thruster 1 and adjusts its operating power and direction; adjusts the clamping force and bottoming of the touch probe rod 14 through the hydraulic motor 10; controls the start and stop of the hydraulic motor 10, and controls the elastic clip The clamping device 12 clamps and loosens the touch probe rod 14, and completes data communication.

During the process of floating at sea, the filling and draining buoy 8 is filled with air, and the dead weight and buoyancy of the overall equipment in the water cancel each other out. Only the small floating tugboat 2 can pull the overall equipment to the target position, and the equipment can be equipped with its own vector thruster 1 Find survey sites freely. Open the water inlet valve and fill the water injection and drainage buoy 8 with seawater, so that the whole equipment sinks to the bottom of the seabed for operation.

When the probe equipment arrives at the survey point and stabilizes, first check the PC on the small floating tugboat 2 to ensure that the relevant equipment is connected properly and the initial state is reasonable; then the hydraulic propulsion assembly monitor 19 is controlled by the static touch probe control system to adjust the elastic force The clamping force of the clamping device 12 on the probe rod 14 activates the hydraulic motor 10 to provide power to drive the friction wheel 13 to rotate, and the two friction wheels 13 act in opposite directions. In the formation, when the penetration reaches a predetermined depth, the hydraulic motor 10 is turned off to maintain the clamping force of the elastic clamping device 12 on the probe rod 14. After the survey data is stabilized, the data transmission is completed.

After the operation is completed, close the water inlet valve, open the drain valve, and inject high-pressure air into the injection and drainage buoy 8 through the air inlet, so that the whole equipment is in a weightless state on the seabed, and then pull up and recover, and pass through the small floating tugboat 2 and the vector thruster. 1 to the next target position job.

The submarine mobile CPTu penetration equipment of the present invention can operate at a depth of 100m on the seabed, the static penetration depth of the probe rod can reach 30m, and through the underwater heave and move the platform, with the vector thruster, the detection station can be selected independently and flexibly The CPTu probe equipment for testing the soil mechanical properties (penetration resistance, lateral friction resistance and pore water pressure, etc.) of the seabed surface sediments at the site.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

A kind of submarine mobile CPTu penetration equipment, is characterized in that, comprises:

An underwater heave movement unit, the underwater heave movement unit includes a support frame (3), a guide frame (7), a water-filling buoy (8) and a vector thruster (1), and the guide frame (7) ) is vertically fixed on the support frame (3), the water injection and drainage buoys (8) are symmetrically arranged on the support frame (3) to provide heave force, the vector thruster (11) It is fixed on the guide frame (7) to provide traveling power;

The CPTu probe rod assembly (4), the CPTu probe rod assembly (4) is mounted on the support frame (3) and guided by the guide frame (7);

A hydraulic propulsion system (5) for providing penetration force to the CPTu probe rod assembly (4).
The submarine mobile CPTu penetration equipment according to claim 1, characterized in that, the CPTu probe rod assembly (4) is located in a centrally symmetrical position of the support frame (3).
A submarine mobile type CPTu penetration equipment according to claim 1, characterized in that, the CPTu probe rod assembly (4) comprises a penetration rod (14), a cone head (15), a water permeable filter (16) and the friction cylinder (17), the cone head (15) is fixed on the lower end of the probe rod (14), the friction cylinder (17) is sleeved on the probe rod (14), and the water permeable filter (16) is arranged close to the probe rod (14). After the cone head (15), the cone head (15) is used to measure the cone tip resistance, the water permeable filter (16) is used to measure the excess pore water pressure, and the friction cylinder (17) is used to measure the side friction resistance.
The submarine mobile CPTu penetration equipment according to claim 3, wherein the hydraulic propulsion system (5) comprises a hydraulic motor (10), an elastic clamping device (12) and a friction wheel (13) , two elastic clamping devices (12) are symmetrically distributed on both sides of the probe rod (14), each elastic clamping device (12) is installed with a hydraulic motor (10), and the rotation of each hydraulic motor (10) A friction wheel (13) is installed on the shaft, and the two friction wheels (13) are symmetrically distributed on both sides of the touch probe rod (14) and are in contact with the touch probe rod (14). The elastic clamping device (12) is fixed on the on the support frame (3).
A submarine mobile CPTu penetration equipment according to claim 4, characterized in that, the elastic clamping device (12) comprises a fixed support (6), a control rod (9) and a spring (11), The fixed support (6) is hinged with the support frame (3), the hydraulic motor (10) is mounted on the fixed support (6), and the control rod (9) is mounted in the support frame (3) One end of the spring (11) is pressed against the fixed support (6), and the other end is pressed against the end of the control rod (9).
A kind of submarine mobile CPTu penetration equipment according to claim 5, is characterized in that, also comprises:

A static touch detection and control system, the static touch detection and control system comprises an underwater crawling monitor (18) for controlling a vector thruster (11) and a hydraulic propulsion assembly measurement and control for controlling a hydraulic motor (10). device (19).
A kind of submarine mobile type CPTu penetration equipment according to claim 1, is characterized in that, described water injection and drainage buoy (8) has a water inlet, a water outlet and an air inlet, and through the air inlet, high-pressure gas is used in the water Drain the water in the filling and draining float (8).
The submarine mobile CPTu penetration equipment according to claim 6, wherein the water inlet and the water outlet are respectively provided with a water inlet valve and a water discharge valve.
The submarine mobile CPTu penetration equipment according to claim 1, characterized in that, the total volume of the water injection and drainage buoy (8) is 4-8 m 3 .