CN108152075B - Fan-shaped deep sea sampling device utilizing titanium alloy film for sealing and pressure maintaining - Google Patents
Fan-shaped deep sea sampling device utilizing titanium alloy film for sealing and pressure maintaining Download PDFInfo
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- CN108152075B CN108152075B CN201711240116.2A CN201711240116A CN108152075B CN 108152075 B CN108152075 B CN 108152075B CN 201711240116 A CN201711240116 A CN 201711240116A CN 108152075 B CN108152075 B CN 108152075B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/10—Devices for withdrawing samples in the liquid or fluent state
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/10—Devices for withdrawing samples in the liquid or fluent state
- G01N2001/1031—Sampling from special places
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Abstract
The application discloses a fan-shaped deep sea sampling device for sealing and maintaining pressure by utilizing a titanium alloy film, which comprises a fan-shaped shell, a rotating part and a sealing and maintaining pressure part, wherein the rotating part is arranged on the fan-shaped shell; the fan-shaped shell comprises an upper chassis and a lower chassis, the rotating part is positioned between the upper chassis and the lower chassis, the sealing pressure maintaining part comprises two titanium alloy films, two pistons and a hydraulic system, when the sample cavity rotates to the position of the titanium alloy films along with the rotating part, the titanium alloy films are sealed through concave deformation, and the hydraulic system performs pressure compensation for the titanium alloy film piston device so as to achieve the sealing pressure maintaining effect. The fan-shaped deep sea sampling device not only can clean the sampling sample cavity part by utilizing seawater before sampling, but also can control the sample to be ejected out when the sample is transferred on the shore after sampling, and the whole process can better realize the sealing and pressure maintaining of the sample. The device has simplified the step in the sampling of deep sea, coastal transfer's in-process, has improved efficiency, has realized stable pressurize, and is very convenient, has good economic benefits and development prospect.
Description
Technical Field
The application relates to a deep sea pressure maintaining sampling device, in particular to a deep sea sampling device for sealing and maintaining pressure by utilizing a titanium alloy film.
Background
Ocean is the origin of life and the evolution of organisms is not separated from the ocean. Humans are always curious about unknowns, and starting from the cognitive ocean, they never stop exploring the ocean's pace. In order to further understand the ocean and know the deep sea, people begin to do from the process of salvaging objects in the deep sea, and research the structure of the deep sea, and continuously find the secret of one deep sea, however, after the deep sea sample is salvaged, the living environment of the deep sea sample is seriously changed, so that people cannot intuitively understand the deep sea sample, therefore, a device which can keep the state of the deep sea sample in the deep sea when the deep sea sample is salvaged is urgently needed, and further research on the deep sea by people is needed.
At present, the technical means for the ten-thousand-meter-level submarine sampling in China are very limited, available equipment is very few, and compared with developed countries, the means for submarine exploration are relatively single, and submarine sampling equipment is behind. The main aspects are as follows: (1) The gravity type sampler widely adopted at present has the advantages of simple structure and convenient operation, but the weight and the length are overlarge, because the steel wire cable arrangement mode is adopted, the operation of the level of ten meters only reaches the weight of several tons, and the cost is high; (2) The success rate is low, the winch system frequently has the condition of cable interception caused by the fault of the winch system due to long-time work, so that great loss is caused, and sampling is very easy to be unsuccessful due to too heavy arrangement and difficult recovery; (3) Even if the sampling is successful, the quality of the collected sample is low, and the defects of leakage, impurity doping and the like are easy to occur in the sampling and recycling processes. Therefore, in the background, by combining with the practical experience of ocean exploration, research and development of a universal-meter-level deep-sea autonomous matrix exploration device for deep sea, which is multifunctional, convenient to operate and simple to maintain, are urgently needed, and technical guarantees are provided for new rounds of ocean resource large investigation, ocean geological structure research and ocean environment research in China.
Disclosure of Invention
The application aims to solve the problems in the prior art, and provides a fan-shaped deep sea sampling device for sealing and maintaining pressure by utilizing a titanium alloy film, wherein the sealing and maintaining pressure of a sample are realized by utilizing the titanium alloy film and a piston, a sample cavity component can be cleaned by utilizing seawater before sampling, and the sample can be rapidly ejected by utilizing a base ejection component after sampling, so that the device can realize mass processing, and is simple to manufacture, low in production cost, simple and convenient to install, high in efficiency, safe and reliable.
The technical scheme adopted for solving the technical problems is as follows:
the sector deep sea sampling device for sealing and maintaining pressure by utilizing the titanium alloy film comprises a sector shell, a rotating part and a sealing and maintaining pressure part;
the fan-shaped shell comprises an upper chassis and a lower chassis;
the rotating component is positioned between the upper chassis and the lower chassis and comprises a rotating shaft and a rotating arm, two ends of the rotating shaft are respectively connected with the upper chassis and the lower chassis through bearings, one end of the rotating arm is connected with the rotating shaft, the other end of the rotating arm is provided with a through hole-shaped sample cavity, a limiting block is arranged at the edge of the lower chassis, a notch is arranged at the corresponding edge of the upper chassis, an upper pressure maintaining through hole and a sampling through hole are sequentially formed in the upper chassis, and a lower pressure maintaining through hole is formed in the position of the lower chassis corresponding to the upper pressure maintaining through hole;
the sealing pressure maintaining component comprises two titanium alloy films, two pistons and a hydraulic system, wherein the two titanium alloy films are respectively fixed at the bottom of the upper pressure maintaining through hole and the top of the lower pressure maintaining through hole, the top of the upper pressure maintaining through hole and the bottom of the lower pressure maintaining through hole are sealed by end covers, the two pistons are respectively arranged in the two pressure maintaining through holes, and hydraulic oil is filled between the pistons and the titanium alloy films and between the pistons and the end covers and is connected with the hydraulic system;
the rotating shaft is driven by a motor to drive the radial arm to rotate, and when the radial arm rotates to the position of the limiting block, the sample cavity rotates out of the upper chassis and the lower chassis to be at a working position 1; when the rotating arm rotates to the notch of the upper chassis, the lower surface of the sample cavity is in full contact with the lower chassis to form a working position 2; when the rotating arm rotates to the upper pressure maintaining through hole and the lower pressure maintaining through hole, the upper surface and the lower surface of the sample cavity are in complete contact with the titanium alloy film, and the working position is 3; when the radial arm rotates to the sampling through hole, the sample cavity is communicated with the sampling through hole, and an ejection part for ejecting the sample is arranged at the corresponding position of the sample cavity at the moment of the lower chassis and is a working position 4.
The device adopts a unique structural design, adopts a titanium alloy film which has certain flexibility, can deform and is resistant to high pressure and not damaged, and is concaved inwards by applying pressure to the film through a hydraulic system and a piston, so that sealing is realized, and the hydraulic system performs pressure compensation for the titanium alloy film piston device to achieve the sealing and pressure maintaining effects. Compared with the common pressure maintaining measures, such as thickening and reinforcing a sampler and nitrogen pressure compensation, the liquid volume expansion is compensated by nitrogen, but the gas compensation is extremely easy to lose effectiveness (according to a PV=nRT curve) in a high-pressure 85MPa environment, and the application only depends on the concave compensation deformation of the film, thereby reducing the sealing requirements on various valves and mechanical structures.
In the above technical scheme, preferably, the upper pressure maintaining through hole and the lower pressure maintaining through hole are both stepped through holes, the piston is a variable-section piston, the stepped through hole of the upper pressure maintaining through hole is in a shape of big end down, the piston is arranged in the stepped through hole in an inverted I shape, and the lower pressure maintaining through hole is symmetrical with the upper pressure maintaining through hole. Because the environmental pressure in deep sea can reach up to 100MPa, it is not easy to realize manual pressure higher than 100MPa in a small space, so that the pressure can be increased by using the similar principle of a jack through the design of a variable-section piston.
Preferably, the thickness of the titanium alloy film is 2mm. The titanium alloy film diameter should be greater than the sample cavity diameter.
Preferably, the ejection component comprises an ejection switch and a pre-compression spring arranged in the lower chassis, and the pre-compression spring can be ejected upwards from the lower chassis by pressing the ejection switch. Further, a circular plate is fixed at the top of the pre-pressing spring, and the diameter of the circular plate is smaller than that of the sample cavity.
Preferably, the radial arm is connected with the rotating shaft through a key.
The sampling device rotates the sampling sample cavity to the limiting block through the rotating shaft and then reaches the working position 1, the sampling sample cavity is communicated with the seawater from top to bottom, the seawater is enabled to clear the inside of the sampling sample cavity part through the moving device or the standing for a period of time, the impurities in the sampling sample cavity part are cleared, and the purity of sediment samples is guaranteed.
The sampling device rotates the sampling sample cavity to the working position 2 through the rotating shaft, the lower end of the sampling sample cavity is sealed by the lower chassis, leakage of sediment is avoided, the upper end sampling sample cavity is exposed to seawater, the sediment is filled in the upper end sampling sample cavity by the mechanical arm, the sampling sample cavity is filled, and sampling is finished.
The sampling device rotates the sampling sample cavity to the working position 3 through the rotating shaft, and the hydraulic system is combined with the upper titanium alloy film, the lower titanium alloy film and the piston to seal and maintain pressure, so that the sample can be well maintained in the process of transferring to the shore.
The sampling device rotates the sampling sample cavity to the working position 4 through the rotating shaft, when the sample is transferred on the shore, the sampling device rotates to the working position, and the lower chassis ejection component can push the sample in the sampling cavity to transfer the sample to the outside.
The beneficial effects of the application are as follows: the titanium alloy film and the piston are used for realizing sealing and pressure maintaining of the sample, the seawater can be used for cleaning a sample cavity part before sampling, the base is used for ejecting and rapidly ejecting the sample after sampling, the operation steps are simplified, the large-batch processing can be realized, the manufacturing is simple, the production cost is low, the installation is simple and convenient, the efficiency is high, the safety and the reliability are realized, and the requirement of good pressure maintaining of deep sea sampling is met. Compared with other deep sea samplers, the application uses the titanium alloy film to realize pressure maintaining on the sample, reduces sundries in the sample, ensures the quality of the sample, can conveniently and rapidly realize sample transfer on the shore, has simple structure, is easy to operate under the deep sea condition, and has good economic benefit and development prospect.
Drawings
FIG. 1 is a schematic diagram of the structure of the present application;
FIG. 2 is a schematic cross-sectional view of the structure A-A of the present application;
FIG. 3 is a schematic cross-sectional view of structure B-B of the present application;
in the figure: 1, a working position 4;2, a lower chassis; 3, a working position 3;4 titanium alloy film; 5 working position 2;6, working position 1; a limiting block 7; 8 sample chambers; 9, a hydraulic system; 10 end covers; 11 a variable cross-section piston; a 12 bond; a rotating shaft 13; a 14 bearing; 15 upper chassis; 16 sampling through holes; 17 radial arms; 18 an ejection switch; 19 pre-pressing a spring; 20, pressure maintaining through holes are formed; and a pressure maintaining through hole under 21.
Detailed Description
In order to make the technical solution of the present application more clearly understood, the present application will be further described with reference to the accompanying drawings and examples. It should be noted that, without conflict, the embodiments of the present application and features in the embodiments may be combined with each other.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application, however, the present application may be practiced otherwise than as described herein, and thus the present application is not limited to the following specific examples.
Examples
As shown in fig. 1 and 2, the fan-shaped deep sea sampling device using titanium alloy film for sealing and pressure maintaining in the embodiment comprises a fan-shaped shell, a rotating part and a sealing and pressure maintaining part;
the fan-shaped shell comprises an upper chassis 15 and a lower chassis 2; the rotating part is positioned between the upper chassis and the lower chassis and comprises a rotating shaft 13 and a rotating arm 17, two ends of the rotating shaft are respectively connected with the upper chassis and the lower chassis through bearings 14, one end of the rotating arm is connected with the rotating shaft through a key 12, the other end of the rotating arm is provided with a through hole-shaped sample cavity 8, the sample cavity 8 is 100mL, the edge of the lower chassis is provided with a limiting block 7, the corresponding edge of the upper chassis is provided with a notch, the upper chassis is also provided with an upper pressure maintaining through hole 20 and a sampling through hole 16 in sequence, and the position of the lower chassis corresponding to the upper pressure maintaining through hole is provided with a lower pressure maintaining through hole 21;
the sealing pressure maintaining part comprises two titanium alloy films 4, two pistons 11 and a hydraulic system 9, wherein the two titanium alloy films are respectively fixed at the bottom of the upper pressure maintaining through hole and the top of the lower pressure maintaining through hole, the thickness of the titanium alloy films is 2mm, and the diameter of the titanium alloy films is larger than that of the sample cavity. The top of the upper pressure maintaining through hole and the bottom of the lower pressure maintaining through hole are sealed by an end cover 10, two pistons are respectively arranged in the two pressure maintaining through holes, hydraulic oil is filled between the pistons and the titanium alloy film and between the pistons and the end cover, and the two pistons are connected with a hydraulic system; the upper pressure maintaining through hole and the lower pressure maintaining through hole are stepped through holes, the piston is I-shaped and arranged in the stepped through hole, and the lower pressure maintaining through hole is symmetrical to the upper pressure maintaining through hole. Because the environmental pressure in deep sea can reach up to 100MPa, it is not easy to realize manual pressure higher than 100MPa in a small space, so by the design of the variable-section piston, the pressurization can be performed by utilizing the jack-like principle.
The rotating shaft is driven by a motor to drive the radial arm to rotate, when the radial arm rotates to the position of the limiting block, the sample cavity rotates out of the upper chassis and the lower chassis to be a working position 1, and the sample cavity 8 can be cleaned by utilizing seawater at the working position to prevent unnecessary sundries; when the rotating arm rotates to the working position 2 of the notch of the upper chassis (as shown in figure 2), the lower surface of the sample cavity is in full contact with the lower chassis, and the mechanical arm can place a sampled article in the sample cavity 8; after the sample is filled, when the radial arm rotates to the upper pressure maintaining through hole and the lower pressure maintaining through hole, the upper surface and the lower surface of the sample cavity are in full contact with the titanium alloy film, namely the working position 3, the sample cavity 8 reaches the titanium alloy film 4, sealing pressure maintaining is realized through the upper layer of the titanium alloy film 4, the lower layer of the titanium alloy film 4 and the variable cross-section piston 11, and the hydraulic system 9 can provide pressure compensation when the pressure is insufficient; when the rotating arm rotates to the sampling through hole, the sample cavity is communicated with the sampling through hole, an ejection part for ejecting a sample is arranged at the corresponding position of the sample cavity at the moment of the lower chassis and is in a working position 4, as shown in fig. 3, the ejection part comprises an ejection switch 18 and a pre-compression spring 19 arranged in the lower chassis, the pre-compression spring can be ejected upwards from the lower chassis by pressing the ejection switch, a circular plate is fixed at the top of the pre-compression spring, and the diameter of the circular plate is smaller than that of the sample cavity, so that the sample can be effectively pushed out.
The device adopts the titanium alloy film which has certain flexibility, can deform and is resistant to high pressure and not damaged, and the pressure is applied to the film by the hydraulic system and the piston to enable the film to be concave, so that pressure maintaining sealing is realized. Compared with the common pressure maintaining measures, such as thickening and reinforcing a sampler and nitrogen pressure compensation, the liquid volume expansion is compensated by nitrogen, but the gas compensation is extremely easy to lose effectiveness (according to a PV=nRT curve) in a high-pressure 85MPa environment, and the application only depends on the concave compensation deformation of the film, thereby reducing the sealing requirements on various valves and mechanical structures. The deep sea sampling device has the advantages of simple integral structure, easy operation under the deep sea condition and good economic benefit and development prospect.
Claims (6)
1. A fan-shaped deep sea sampling device utilizing titanium alloy film for sealing and pressure maintaining is characterized by comprising: the fan-shaped shell, the rotating part and the sealing pressure maintaining part;
the fan-shaped shell comprises an upper chassis and a lower chassis;
the rotating part is positioned between the upper chassis and the lower chassis and comprises a rotating shaft and a rotating arm, two ends of the rotating shaft are respectively connected with the upper chassis and the lower chassis through bearings, one end of the rotating arm is connected with the rotating shaft, the other end of the rotating arm is provided with a through hole-shaped sample cavity, a limiting block is arranged at the edge of the lower chassis, the upper chassis is provided with a notch, the upper chassis is also provided with an upper pressure maintaining through hole and a sampling through hole in sequence, and the position of the lower chassis corresponding to the upper pressure maintaining through hole is provided with a lower pressure maintaining through hole;
the sealing pressure maintaining component comprises two titanium alloy films, two pistons and a hydraulic system, wherein the two titanium alloy films are respectively fixed at the bottom of the upper pressure maintaining through hole and the top of the lower pressure maintaining through hole, the top of the upper pressure maintaining through hole and the bottom of the lower pressure maintaining through hole are sealed by end covers, the two pistons are respectively arranged in the two pressure maintaining through holes, and hydraulic oil is filled between the pistons and the titanium alloy films and between the pistons and the end covers and is connected with the hydraulic system;
the rotating shaft is driven by a motor to drive the radial arm to rotate, and when the radial arm rotates to the position of the limiting block, the sample cavity rotates out of the upper chassis and the lower chassis to be at a working position 1;
when the rotating arm rotates to the notch of the upper chassis, the lower surface of the sample cavity is in full contact with the lower chassis to form a working position 2;
when the rotating arm rotates to the upper pressure maintaining through hole and the lower pressure maintaining through hole, the upper surface and the lower surface of the sample cavity are in complete contact with the titanium alloy film, and the working position is 3;
when the radial arm rotates to the sampling through hole, the sample cavity is communicated with the sampling through hole, and an ejection part for ejecting the sample is arranged at the corresponding position of the sample cavity at the moment of the lower chassis and is a working position 4.
2. The fan-shaped deep sea sampling device for sealing and maintaining pressure by utilizing the titanium alloy film according to claim 1, wherein the upper pressure maintaining through hole and the lower pressure maintaining through hole are both stepped through holes, and the piston is a variable cross-section piston.
3. The fan-shaped deep sea sampling device for sealing and maintaining pressure by utilizing the titanium alloy film according to claim 1, wherein the thickness of the titanium alloy film is 2mm.
4. The fan-shaped deep sea sampling device for sealing and maintaining pressure by utilizing the titanium alloy film according to claim 1, wherein the ejection component comprises an ejection switch and a pre-compression spring arranged in the lower chassis, and the pre-compression spring can be ejected upwards from the lower chassis by pressing the ejection switch.
5. The fan-shaped deep sea sampling device for sealing and maintaining pressure by utilizing a titanium alloy film according to claim 4, wherein a circular plate is fixed at the top of the pre-pressing spring, and the diameter of the circular plate is smaller than that of the sample cavity.
6. The fan-shaped deep sea sampling device for sealing and maintaining pressure by utilizing the titanium alloy film according to claim 1, wherein the radial arm is connected with the rotating shaft through a key.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711240116.2A CN108152075B (en) | 2017-11-30 | 2017-11-30 | Fan-shaped deep sea sampling device utilizing titanium alloy film for sealing and pressure maintaining |
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| CN201711240116.2A CN108152075B (en) | 2017-11-30 | 2017-11-30 | Fan-shaped deep sea sampling device utilizing titanium alloy film for sealing and pressure maintaining |
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| CN108152075B true CN108152075B (en) | 2023-08-18 |
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| CN113029700B (en) * | 2021-03-05 | 2022-06-07 | 浙江大学 | Sediment fidelity sampling device based on underwater ROV contains overburden water |
| CN114602325B (en) * | 2022-02-18 | 2023-05-09 | 中国科学院水生生物研究所 | Sampling method, control method and system of disk type environment DNA filter cake replacement device |
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