CN201302527Y - Sea water isopressing-driven sub-surface seafloor sediment fidelity sampler - Google Patents

Abstract

The utility model relates to a device for testing or analyzing materials by means of measuring chemical or physical properties of materials, in particular to a seabed sediment extraction tool using deep sea pressure as a driving force. It overcomes the defects of complex power supply and high energy consumption in the subsurface seabed sediment fidelity sampler, and proposes a subsurface seafloor sediment fidelity sampler using the pressure of seawater as the driving force. The utility model includes a release device and a sampling device, wherein the sampling device includes a connecting pipe and a lifting pipe, the connecting pipe and the lifting pipe are connected through a flange, the upper part of the lifting pipe is connected with the releasing device through a lifting block at the tail, and the lower port of the connecting pipe is provided with a cutter head , the middle part of the connecting pipe is provided with a sealed sampling device. The sealed sampling device includes a sealed cabin. The connecting pipe is divided into upper and lower connecting pipes, and the upper and lower connecting pipes are respectively connected with the sealed cabin. Corresponding to the sample tube, one side of the airtight chamber is provided with a driving device for translating the sample tube, that is, a translation hydraulic cylinder, and the other side is provided with a driving device for sealing the sample tube, that is, a sealing hydraulic cylinder. The device communicates with the translation hydraulic cylinder and the sealing hydraulic cylinder respectively through the high-speed switching valve, and the translation hydraulic cylinder and the sealing hydraulic cylinder respectively communicate with the pressure-resistant device through the high-speed one-way valve. The device does not need to use additional energy storage equipment, has low energy consumption, and not only realizes in-situ fidelity sampling, but also achieves the purpose of energy saving.

Description

Seawater isostatically driven subsurface seabed sediment fidelity sampler

technical field

The utility model relates to a device for testing or analyzing materials by means of measuring chemical or physical properties of materials, in particular to a seabed sediment extraction tool using deep sea pressure as a driving force.

Background technique

Existing seabed sediment samplers are classified into fidelity samplers and non-fidelity samplers. The most typical non-fidelity sampler is the gravity tube sampler. This kind of sampler cannot achieve fidelity sampling. During the sampling process, the loss of gas phase solution components, the change of oxidation state of variable ions and the decomposition of organic components are inevitable; the publication number is CN2814314, the utility model patent titled "Novel Fidelity Sampler for Subsurface Seabed Sediments" discloses a fidelity sampler capable of collecting subsurface seabed sediments in situ, which overcomes the limitations of current fidelity samplers. With regard to fidelity sampling of surface sediments, the defect of fidelity sampling of subsurface sediments cannot be realized. The power equipment in this technical solution is an energy storage tank fixed on the device. The energy storage tank is generally filled with high-pressure oil. The energy storage tank is connected with the hydraulic components in the sampler, and the high-pressure oil drives the hydraulic cylinder through the oil circuit switch. , the defect of using the energy storage tank is that the pressure of the high-pressure oil needs to be observed at any time during use. sampling workload.

Contents of the invention

The purpose of the utility model overcomes the power supply in the fidelity sampler of the subsurface seabed sediment is more complicated, and the defect of large energy consumption proposes a kind of subsurface seabed sediment fidelity sampler utilizing the pressure of seawater as the driving force, Therefore, the device does not need to use additional energy storage equipment, consumes less energy, and achieves the purpose of energy saving.

The utility model is realized by adopting the following technical solutions: a seawater isostatic pressure subsurface sediment guarantee sampler, including a release device and a sampling device, wherein the sampling device includes a connecting pipe and a lifting pipe, and the connecting pipe and the lifting pipe pass through Flange connection, the upper part of the lifting pipe is connected with the release device through the tail lifting block, the lower port of the connecting pipe is provided with a cutter head, and the middle part of the connecting pipe is provided with a sealed sampling device, the sealed sampling device includes a sealed cabin, and the connecting pipe is divided into upper and lower connecting pipes , and the upper and lower connecting pipes are connected with the sealed cabin respectively, and the sample tubes corresponding to the upper and lower connecting pipes are set in the sealed cabin. The driving device of the sealed sample tube is the sealed hydraulic cylinder, wherein the seawater isostatic pressure device is arranged on the lifting tube, and the device is respectively connected with the translation hydraulic cylinder and the sealing hydraulic cylinder through the high-speed switching valve, and the translation hydraulic cylinder and the sealing hydraulic cylinder are respectively connected with each other. The sealed hydraulic cylinders communicate with the pressure-resistant devices through high-speed one-way valves respectively.

The seawater isostatic pressure device is a seawater pressure and flow control valve block, and seawater continuously enters the valve block, or an oil bag, during use. The number of seawater pressure and flow control valve blocks or oil bags can be one or more, In order to simplify the structure of the sampler and reduce the weight, generally 1-2 seawater pressure flow control valve blocks or oil bladders are installed on the sampler. A high-speed switch valve is set above or below the translation hydraulic cylinder. One end of the high-speed switch valve is connected to the right cavity of the hydraulic cylinder, and the other end is connected to the isostatic pressure device. A high-speed check valve is set below or above the corresponding hydraulic cylinder. The input end of the high-speed check valve communicates with the left cavity of the hydraulic cylinder, and the output end communicates with the pressure-resistant device; or connect one end of the high-speed switch valve with the left cavity of the hydraulic cylinder, at this time the input The end communicates with the right cavity of the hydraulic cylinder. The positions of the high-speed switching valve and the high-speed one-way valve are not limited to the above-mentioned situations, and can be set according to specific working conditions.

A high-speed switch valve is set on the left or right side of the sealed hydraulic cylinder. One end of the high-speed switch valve is connected to the upper cavity of the hydraulic cylinder, and the other end is connected to the isostatic pressure device. A high-speed check valve is set on the right or left side of the corresponding hydraulic cylinder. The input end of the high-speed check valve communicates with the lower cavity of the hydraulic cylinder, and the output end communicates with the pressure-resistant device; The end communicates with the upper cavity of the hydraulic cylinder. The positions of the high-speed switching valve and the high-speed one-way valve are not limited to the above-mentioned situations, and can be set according to specific working conditions.

The volume of the pressure-resistant container is determined according to specific work needs, and the pressure-resistant container is in a state of normal pressure before the sampler is released.

The beneficial effect of the utility model is: the sampler utilizes the pressure difference between the deep-sea environment and the pressure-resistant container, and through the control of the high-speed switch valve and the high-speed one-way valve, it provides a driving force for the linear motion of the hydraulic cylinder, so that The translation and sealing process of the sample tube is completed in situ, which not only realizes in situ fidelity sampling, but also does not require energy storage equipment such as energy storage tanks, and consumes less energy, achieving the purpose of energy saving.

Description of drawings

Accompanying drawing 1 is the overall structural representation of the utility model in the present embodiment 1;

Accompanying drawing 2 is the first structure schematic diagram of the driving device arranged on the translational hydraulic cylinder;

Accompanying drawing 3 is the second structural representation of the driving device arranged on the translational hydraulic cylinder;

Accompanying drawing 4 is the first structure schematic diagram of the driving device arranged on the sealed hydraulic cylinder;

Accompanying drawing 5 is the second structure schematic diagram of the driving device arranged on the sealed hydraulic cylinder.

Detailed ways

Example 1

The overall structure of the present utility model is shown in Figure 1, and it comprises sealed cabin 3, and the sample tube 7 and auxiliary tube 5 that can translate along slideway are arranged in sealed cabin 3, and sample tube and auxiliary tube are connected together with elastic steel bar , wherein, the sample tube is semi-connected, the steel bar is connected with the end of the piston rod of the translation hydraulic cylinder 4, and the sealed hydraulic cylinder 8 is installed on the upper and lower decks of the sealed cabin. After the position, the upper and lower sealing hydraulic cylinders 8 act to press down the rubber plug and the spring clip to form a seal; the lower end of the sealing cabin is connected with the lower connecting pipe 2, and the lower end of the lower connecting pipe is equipped with a cutter head; the upper part of the sealing cabin is connected with the upper connecting pipe 9 , the upper connecting pipe is connected with the lifting pipe 12 through the flange 10, and the lead weight 11 is fixed on the flange 10. A track for translation of the sample tube and the auxiliary tube is provided on the inner wall of the airtight cabin 3, and a protective cover is provided outside the airtight cabin, and the protective cover is arranged in the shape of an arrow.

A driving device is fixed on the lifting pipe 12, and the device includes a pressure-resistant container 121 as shown in Figure 2, a high-speed check valve 122, a high-speed switching valve 124, and an isostatic pressure device, that is, a seawater pressure flow control valve block 123. The block communicates with seawater, and the hydraulic cylinder in this figure is a translation hydraulic cylinder 4. Wherein the seawater pressure flow control valve block 123 is fixed on the lifting pipe 12 by a steel band, and it communicates with the right cavity of the hydraulic cylinder 4 through the high-speed switch valve 124; The pressure-resistant container 121 provided at the lower part of the hydraulic cylinder 4 communicates. The high-speed switching valve 124 is arranged on the upper part of the hydraulic cylinder 4 , and one end thereof communicates with the seawater pressure flow control valve block 123 , and the other end communicates with the right cavity of the hydraulic cylinder 4 . The high-speed one-way valve 122 is arranged at the lower part of the hydraulic cylinder 4 , its input end communicates with the left cavity of the hydraulic cylinder 4 , and its output end communicates with the pressure-resistant container 121 . The volume of the pressure-resistant container 121 can be designed according to specific work requirements, and the pressure inside the pressure-resistant container 121 is normal pressure when the sampler is released. The drive device connected to the sealed hydraulic cylinder 8 is shown in Figure 4, wherein the seawater pressure flow control valve block 123 is located on the right side of the hydraulic cylinder 8, and communicates with the upper cavity of the hydraulic cylinder 8 through the high-speed switch valve 124'; The pressure device 121 is arranged on the left side of the hydraulic cylinder 8, and communicates with the lower cavity of the hydraulic cylinder 8 through a high-speed check valve 122'.

In actual use, the sampler is first transported to the designated sea area by a ship or other carrier, and then it is dropped into the sea with a lifting device. Before release, the sampler is hung on the release device and slowly lowered together with the release device. When released The sampler falls off from the release device 17. Since the cutter head is pointed and the protective cover is arrow-shaped, the equipment is quickly inserted into the seabed sediment layer, so the sediment enters the lower connecting pipe 2, the sample pipe 7 and the upper connecting pipe 9 from the cutter head 1 Then use the ship-borne winch to pull up the steel wire rope 16; during the pull-up process, the high-speed on-off valve 124 and the high-speed check valve 122 in Fig. 2 are opened, and after high-pressure seawater enters the seawater pressure flow control valve block 123, the 124 flows into the right side of the translational hydraulic cylinder 4. Since the left cavity of the hydraulic cylinder 4 is air and communicates with the pressure-resistant device 121, that is, it is in a state of normal pressure, so the piston rod in the hydraulic cylinder 4 is driven by high-pressure seawater. Move to the left, push the sample tube 7 to the sealing position, at this time the auxiliary tube occupies the original position of the sample tube; continue to pull up, the high-pressure switch valve 124' and the high-pressure check valve 122' in Figure 4 are opened, and the seal of the hydraulic cylinder 8 The piston rod moves downward under the push of high-pressure seawater, and presses down the rubber plug to realize the seal fidelity, and then closes the high-speed on-off valve 124' and the high-speed one-way valve 122'; continue to pull up, the main wire rope pulls the sampler out as a whole, In the process of continuing to pull up, due to the existence of the auxiliary pipe 5, the seawater will wash away the remaining sediments in the pipe to realize the self-cleaning of the sampler; finally, the whole sampler is hoisted to the ship, and the high-speed on-off valve 124' and the high-speed The one-way valve 122' is opened, the piston rod is restored, the side hatch is opened to take out the sample tube, the empty sample tube is pushed in, the hatch is closed, the high-speed switching valve 124 and the high-speed one-way valve 122 are always open, and the translation hydraulic cylinder is restored , the next sampling can be performed.

In the utility model, the positions of the seawater pressure flow control valve block, the high-speed on-off valve, the high-speed one-way valve and the pressure vessel are not limited by the utility model, and their positions and connection modes with the hydraulic cylinder are determined according to specific working conditions and The installation position of the hydraulic cylinder is related. As shown in FIG. 3 , the high-speed switching valve 124 communicates with the left cavity of the translation hydraulic cylinder 4 , and the input end of the high-speed check valve 122 communicates with the right cavity of the translation hydraulic cylinder 4 . As shown in Figure 5, the high-speed switch valve 124' communicates with the lower cavity of the sealed hydraulic cylinder 8, and the input end of the high-speed check valve 122' communicates with the upper cavity of the hydraulic cylinder 8. The positions of the high-speed on-off valve and the high-speed one-way valve relative to the hydraulic cylinder are not limited to the several ways shown in the figure, as long as they can achieve the same technical effect as the utility model, they are all within the protection scope of the utility model.

The components of the above sampler are made of corrosion-resistant materials. The opening and closing of high-speed check valves 122 and 122', high-speed on-off valves 124 and 124' are controlled by electrical signals sent by the computer.

Example 2

In this embodiment, the isostatic pressure device is an oil bag fixed on the lifting tube, and the number of oil bags is 1-2. As the seawater depth increases, the pressure that seawater exerts on the oil in the oil bag increases. Make the oil in the oil bag into high-pressure oil, open the high-pressure switch valve and high-pressure check valve, and the high-pressure oil pushes the piston rods in the translation hydraulic cylinder and sealing hydraulic cylinder to move, thereby realizing the in-situ translation and sealing of the sample tube.

Others are the same as embodiment 1.

Claims (7)

1, static pressure such as a kind of seawater drive time top layer marine bottom sediment fidelity sampler, comprise releasing means and sampling apparatus, wherein sampling apparatus comprises connecting pipe and carries pipe, connecting pipe and carry pipe and connect by flange, carrying pipe top carries piece by afterbody and connects with releasing means, the lower port of connecting pipe is provided with cutter head, the middle part of connecting pipe is provided with the sealing sampler, the sealing sampler comprises pressurized capsule, connecting pipe is divided into, following connecting pipe, and on, following connecting pipe connects with pressurized capsule respectively, in pressurized capsule, be provided with on, the sample hose of following connecting pipe correspondence, the drive unit that one side of pressurized capsule is provided with the translation sample hose is the translation hydraulic cylinder, the drive unit that opposite side is provided with the sealed sample pipe is the sealing liquid cylinder pressure, it is characterized in that: described carrying is provided with the seawater isopressing device on the pipe, and this device is communicated with translation hydraulic cylinder and sealing liquid cylinder pressure respectively by high-speed switch valve, and described translation hydraulic cylinder and sealing liquid cylinder pressure are communicated with pressure-resistant apparatus by the high speed retaining valve respectively.

2, static pressure such as seawater according to claim 1 drives subsurface marine bottom sediment fidelity sampler, and it is characterized in that: described seawater isopressing device is a seawater pressure flowrate control valve piece.

3, static pressure such as seawater according to claim 1 drives subsurface marine bottom sediment fidelity sampler, and it is characterized in that: described seawater isopressing device is an oil sac, and the number of oil sac is 1-2.

4, drive subsurface marine bottom sediment fidelity sampler according to static pressure such as each described seawater of claim 1 to 3, it is characterized in that: a side of translation hydraulic cylinder is provided with high-speed switch valve, one end of high-speed switch valve is communicated with the right side cavity of hydraulic cylinder, and the other end is communicated with isopressing device; The opposite side of corresponding hydraulic cylinder is provided with the high speed retaining valve, and the input end of high speed retaining valve is communicated with the left side cavity of hydraulic cylinder, and output terminal is communicated with pressure-resistant apparatus.

5, drive subsurface marine bottom sediment fidelity sampler according to static pressure such as each described seawater of claim 1 to 3, it is characterized in that: a side of translation hydraulic cylinder is provided with high-speed switch valve, one end of high-speed switch valve is communicated with the left side cavity of hydraulic cylinder, and the other end is communicated with isopressing device; The opposite side of corresponding hydraulic cylinder is provided with the high speed retaining valve, and the input end of high speed retaining valve is communicated with the right side cavity of hydraulic cylinder, and output terminal is communicated with pressure-resistant apparatus.

6, drive subsurface marine bottom sediment fidelity sampler according to static pressure such as each described seawater of claim 1 to 3, it is characterized in that: a side of sealing liquid cylinder pressure is provided with high-speed switch valve, one end of high-speed switch valve is communicated with the upside cavity of hydraulic cylinder, and the other end is communicated with isopressing device; The opposite side of corresponding hydraulic cylinder is provided with the high speed retaining valve, and the input end of high speed retaining valve is communicated with the downside cavity of hydraulic cylinder, and output terminal is communicated with pressure-resistant apparatus.

7, drive subsurface marine bottom sediment fidelity sampler according to static pressure such as each described seawater of claim 1 to 3, it is characterized in that: a side of sealing liquid cylinder pressure is provided with high-speed switch valve, one end of high-speed switch valve is communicated with the downside cavity of hydraulic cylinder, and the other end is communicated with isopressing device; The opposite side of corresponding hydraulic cylinder is provided with the high speed retaining valve, and the input end of high speed retaining valve is communicated with the upside cavity of hydraulic cylinder, and output terminal is communicated with pressure-resistant apparatus.

Images