CN210118110U

CN210118110U - Fidelity coring device

Info

Publication number: CN210118110U
Application number: CN201822060437.0U
Authority: CN
Inventors: 谢和平; 刘涛; 高明忠; 李存宝; 朱建波; 吴一凡
Original assignee: Shenzhen University
Current assignee: Shenzhen University
Priority date: 2018-12-07
Filing date: 2018-12-07
Publication date: 2020-02-28
Anticipated expiration: 2028-12-07

Abstract

The utility model provides a fidelity coring device, including urceolus and fidelity cabin, the fidelity cabin set up in the cavity of urceolus, the urceolus is used for boring the core, the fidelity cabin is used for the holding the core, be equipped with first reservoir and second reservoir in the urceolus, first reservoir with the second reservoir pass through the pipeline with the fidelity cabin is connected, the A liquid has been stored in the first reservoir, be equipped with B liquid in the second reservoir, A liquid with B liquid is in the fidelity cabin mixes and takes place the mass transfer effect, and then produces the phase transition, and the surface forms the one deck protection film all around of core, the protection film makes the core is kept apart with external environment. Through setting up the fidelity cabin, liquid A in the first reservoir and liquid B in the second reservoir can take place the mass transfer effect in the surface mixing all around of the rock core in the fidelity cabin, form the protection film and isolated external environment, reach the effect of guaranteeing the quality, moisturizing and keeping a bright.

Description

Fidelity coring device

Technical Field

The utility model belongs to the technical field of the geology is surveyed, especially, relate to a fidelity coring device.

Background

At present, components such as pressure, temperature, pore water and the like are released from a common rock core obtained by deep drilling at home and abroad, and the common rock core is seriously distorted and has nothing to do with the deep in-situ environment. Scientific research using common cores has led to four problems: 1) dead cores (broken to the ground due to stress release); 2) the reserve evaluation of oil and gas resources is distorted, and the measurement is not accurate; 3) possible living bodies (microorganisms, viruses, etc.) existing in the deep rock stratum die; 4) and physical and mechanical parameters of rock formations in real states at different depths cannot be measured.

Among them, quality preservation, moisture retention and gloss retention are a great problem to be solved urgently.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a fidelity coring device can realize that the fidelity gets the core, especially realizes guaranteeing the quality, moisturizing, light-retaining effect.

For realizing the purpose of the utility model, the utility model provides a following technical scheme:

the utility model provides a fidelity coring device, including urceolus and fidelity cabin, the fidelity cabin set up in the cavity of urceolus, the urceolus is used for boring the core, the fidelity cabin is used for the holding the core, be equipped with first reservoir and second reservoir in the urceolus, first reservoir with the second reservoir pass through the pipeline with the fidelity cabin is connected, the A liquid has been stored in the first reservoir, be equipped with B liquid in the second reservoir, A liquid with B liquid is in the fidelity cabin mixes and takes place the mass transfer effect, and then produces the phase transition, and the surface forms the one deck protection film all around of core, the protection film makes the core is kept apart with external environment.

The liquid A is a dripping film forming agent, the liquid B is a solution, a solvent in the liquid A is more soluble in the liquid B so as to separate out a solute in the liquid A, and the liquid A and the liquid B are mixed and cured into a film to form a layer of sealing film wrapping the rock core.

The utility model discloses a fidelity cabin, including first reservoir, second reservoir, first reservoir, second reservoir, first reservoir.

Wherein, a plurality of wall holes are evenly distributed on the peripheral side wall of the fidelity cabin.

The top wall of the fidelity cabin is further provided with a liquid inlet, and the liquid inlet is communicated with the flow channel and the pipelines of the first liquid storage device and the second liquid storage device.

Wherein, be equipped with first control valve on the inlet, the second reservoir with still be equipped with the second control valve on the pipeline that the inlet is connected, first control valve with the second control valve is opened in proper order, and both do not open simultaneously.

Wherein, the fidelity coring device still includes processing unit, processing unit with first control valve with the second control valve electricity is connected, processing unit is used for controlling the switching of first control valve with the second control valve.

When the fidelity cabin completely enters the hollow cavity of the outer barrel, the elastic sheet drives the sealing piece to pop up, so that the space of the sealing piece for sealing the hollow cavity of the outer barrel is a sealed space.

The inner wall of the fidelity cabin is provided with a layer structure of graphene, and the layer structure is used for reducing friction between the rock core and the inner wall of the fidelity cabin.

Wherein, the fidelity coring device still includes the inner tube, the inner tube set up in the cavity of urceolus, the fidelity cabin be tubular structure and set up in the cavity of inner tube, perhaps, the fidelity cabin does the space of the cavity of inner tube.

The utility model provides a pair of fidelity coring device is through setting up the fidelity cabin to set up first reservoir and second reservoir in outer section of thick bamboo, A liquid in the first reservoir and B liquid in the second reservoir can take place the mass transfer effect in the surperficial mixture all around of the rock core in the fidelity cabin, form the protection film and isolated external environment, reach the effect of guaranteeing the quality, moisturizing and gloss.

Drawings

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

FIG. 1 is a modular schematic illustration of a cross-sectional configuration of the structure of a fidelity coring device of an embodiment;

FIG. 2 is a schematic cross-sectional view of a fidelity coring device according to an embodiment.

FIG. 3 is a schematic structural view of a closure of an embodiment;

FIG. 4 is a schematic structural view of an inner barrel of an embodiment;

FIG. 5 is a schematic diagram of the control portion of the fidelity coring of one embodiment.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1, an embodiment of the present invention provides a fidelity coring device, which includes an outer barrel 10, an inner barrel 20 and a fidelity chamber 30, wherein the inner barrel 20 is accommodated in a hollow cavity of the outer barrel 10, and the fidelity chamber 30 is disposed in the inner barrel 20.

Referring to fig. 1 and 2, a drill bit 11 is provided at an end of the outer cylinder 10, and the drill bit 11 is used for driving the soil or rock to obtain a core. The end of the inner cylinder 20 on the same side as the outer cylinder 10 may also be provided with a drill for performing fine cutting processing on the core obtained by drilling the outer cylinder 10, so that the core forms a predetermined shape, such as a cylinder, and can be received by the fidelity chamber 30. The outer cylinder 10 and the inner cylinder 20 can move relatively, and the moving direction is along the axial direction of the outer cylinder 10, so that the drill bits of the outer cylinder 10 and the inner cylinder 20 can cut at different times, and the coring efficiency is improved. In order to keep the drilling temperature of the drill 11 within a normal range, a cooling fluid channel may be further provided in the gap between the outer cylinder 10 and the inner cylinder 20 for cooling the drill 11.

The embodiment of the utility model provides a fidelity coring device's purpose is in order to obtain the same core with the actual environment of original positions such as soil or rock to can provide the foundation for the follow-up nature of studying this department soil or rock. Based on right the embodiment of the utility model provides a research of the core that fidelity coring device obtained can be applied to fields such as oil gas resource detection, geological structure analysis, deep microbiological research.

Further, the embodiment of the utility model provides a "fidelity" of fidelity coring device can include heat preservation, pressurize, quality guarantee, moisturizing or light-retaining etc. and the core that obtains promptly can be unanimous with the temperature, pressure, composition, humidity or the luminous flux of the soil or the rock of coring original position.

Referring to fig. 1, the fidelity chamber 30 can be a hollow space of the inner barrel 20 itself, or can be a separate cylinder structure disposed in the hollow cavity of the inner barrel 20, the cylinder structure having a cavity for receiving a core.

In one embodiment, referring to fig. 1 and 2, the fidelity chamber 30 is integrally disposed in the outer cylinder 10, a sealing member 3 may be disposed on the outer cylinder 10, during coring, the sealing member 3 is opened to allow the core to extend into the cavity of the fidelity chamber 30 through the outer cylinder 10, and the sealing member 3 seals the outer cylinder 10 after the core completely enters the fidelity chamber 30, so that the fidelity chamber 30 is accommodated in the hollow cavity of the outer cylinder 10.

In one embodiment, the fidelity chamber 30 is integrally disposed within the inner barrel 20, the closure 3 can be disposed on the inner barrel 20, during coring, the closure 3 is opened to allow the core to extend through the inner barrel 20 into the cavity of the fidelity chamber 30, and after the core has completely entered the fidelity chamber 30, the closure 3 closes the inner barrel 20 such that the fidelity chamber 30 is contained within the hollow cavity of the closed inner barrel 20.

In one embodiment, a closing member 3 may be further provided on the fidelity chamber 30, and when the drill bit of the outer cylinder 10 or the inner cylinder 20 drills the rock core, the closing member 3 is opened until the rock core completely enters the fidelity chamber 30, and then the closing member 3 closes the fidelity chamber 30, so that the rock core is accommodated in the closed cavity of the fidelity chamber 30.

The closure 3 of the above embodiment may take any suitable configuration. Taking an embodiment of disposing the sealing member 3 on the outer cylinder 10 as an example, referring to fig. 3, the sealing member 3 may be a flap structure, and when the outer cylinder 10 is in an open state, the sealing member 3 is attached to the inner wall of the outer cylinder 3; when the outer cylinder 10 is in the closed state, the closing member 3 is ejected from the inner wall of the outer cylinder 3 to close the outer cylinder 10. The closing part 3 can be provided with a structure such as a spring sheet 31 for driving the closing part 3 to move, the spring sheet 31 is arranged on the surface of one side of the closing part 3, which is back to the inner cylinder 20, and the spring sheet 31 is in a compressed structure when the closing part 3 is attached to the inner wall of the outer cylinder 3; when the outer cylinder 10 needs to be closed, the elasticity of the elastic sheet 31 is released to eject the closing member 3 and close the outer cylinder 10. The sealing member 3 is rotationally moved by the elastic force of the elastic piece 31, and when the sealing member 31 is rotated, the sealing member 31 rotates around the lower end of the sealing member 31 shown in fig. 3 by 90 ° as shown in fig. 3, and the sealing member 3 shown in fig. 2 is finally formed. In one embodiment, when the closing element 3 is attached to the inner wall of the outer cylinder 3, the elastic sheet 31 abuts against the inner wall of the outer cylinder 3, and because the inner cylinder 20 and the outer cylinder 10 move relatively, the inner cylinder 20 can have abutting force on the closing element 3 to limit the elastic sheet 31 of the closing element 3 to be in a compressed state; when the inner cylinder 20 moves to a specific position, the inner cylinder 20 gradually moves away from the closing part 3, so that the closing part 3 loses the limit of the inner cylinder 20, and the elastic sheet 31 can release the elasticity, so that the closing part 3 is ejected to close the outer cylinder 10, and the automatic ejection of the closing part 3 is realized. In one embodiment, the release of the elastic sheet 31 of the sealing member 3 is automatically controlled by other means, for example, the elastic sheet 31 is provided with an electric release structure, which may be an electric controlled spring, two ends of the spring are connected to the elastic sheet 31, and the spring releases when being powered on, so as to release the pressure (or tension) on the elastic sheet 31; the electric release mechanism maintains pressure (or tension) on the resilient tab 31 when it is de-energized, so that the resilient tab 31 remains compressed. The electric releasing structure may include a power supply, a switch and a position sensor, the position sensor is disposed on the outer cylinder 10 and is used for sensing whether the core has completely entered the fidelity chamber 30, if so, the switch is closed and powered on, the pressure (or tension) on the elastic sheet 31 is released, the elastic force of the elastic sheet 31 drives the closing member 3 to move, so as to close the outer cylinder 10, and the control of the electric releasing structure may be controlled by the processing unit 100 described later. In other embodiments, the closure 3 may also be of other types of construction.

In one embodiment, in order to effectively seal the sealing member 3, the sealing member 3 is disposed on the inner wall of the outer cylinder 10, and a sealing structure, such as a sealing ring, may be further enclosed on the side surface of the sealing member 3. When the closing piece 3 is in a state of closing the outer cylinder 10, the side surface of the closing piece 3 is attached to the inner wall of the outer cylinder 10, and a circle of sealing structure is arranged, so that the closing piece 3 can be in contact with the outer cylinder 10 more tightly, and the sealing effect is better.

Referring to fig. 1 and 2, a first reservoir 40 and a second reservoir 50 are arranged in the outer cylinder 10, liquid is filled in the first reservoir 40 and the second reservoir 50, the first reservoir 40 and the second reservoir 50 are communicated with the fidelity chamber 30 through structures such as pipelines, so that the liquid can enter the fidelity chamber 30, the liquid in the first reservoir 40 and the liquid in the second reservoir 50 can generate mass transfer in the fidelity chamber 30 to generate phase change, and finally a layer of protective film is formed on the peripheral surface of the rock core to ensure that the components, humidity and the like of the rock core are consistent with the components and humidity of soil or rock at the original position of coring, thereby realizing the fidelity effect.

Specifically, the liquid stored in the first liquid storage device 40 is liquid a, the liquid stored in the second liquid storage device 50 is liquid B, and the liquid a may be a dripping film forming agent, such as a solution formed by mixing polysulfone and DMF (N, N-dimethyl formamide); the solution B can be water or ethanol solution. The principle of mass transfer is that the solvent in the liquid A is more soluble in the liquid B, the solute in the liquid A can be separated out, and the two liquids are mixed and solidified into a film to form a layer of sealing film wrapping the core.

Referring to fig. 1, 2 and 4, for example, the inner cavity of the inner barrel 20 is used for accommodating a core (i.e., the fidelity chamber 30 is a hollow cavity of the inner barrel 20), a flow passage 22 is formed inside the sidewall of the inner barrel 20, and the flow passage 22 surrounds the top wall and the peripheral sidewall of the inner barrel 20. The inner wall of the inner cylinder 20 is further provided with a plurality of wall holes 23, the wall holes 23 are uniformly distributed on the peripheral side wall of the inner cylinder 20, and certainly, the wall holes 23 can also be distributed on the top wall. The wall openings communicate between the flow passage 22 and the hollow cavity of the inner barrel 20. The inner cylinder 20 is further provided with a liquid inlet 24, the liquid inlet 24 is provided with a first control valve 25, and the first control valve 25 can control the opening and closing of the liquid inlet 24. The liquid inlet 24 is preferably arranged on the top wall of the inner cylinder 20, and the liquid inlet 24 is communicated with the outside and the flow passage 22, at this time, after the liquid is fed into the liquid inlet 24, the liquid can flow downwards under the action of gravity to fill the flow passage 22 and flow into the hollow cavity of the inner cylinder 20 from the wall hole 23. The first reservoir 40 and the second reservoir 50 are connected to the liquid inlet 24 through pipes, so that the liquid a and the liquid B can flow into the hollow cavity of the inner barrel 20 through the liquid inlet 24. Preferably, liquid A and liquid B do not flow into inlet 24 simultaneously, but flow in proper order, that is, the position that liquid A and liquid B took place the mass transfer effect and then produced the phase transition can not be produced in runner 22, but in the hollow cavity of inner tube 20, because the core holding is in the hollow cavity of inner tube 20, consequently, liquid A and liquid B can take place the mass transfer effect and then produce the phase transition on the core surface, form the protection film of parcel core, the protection film can keep external environmental condition, the realization keeps the composition of core, humidity and luminous flux etc. the same with soil or rock etc. of coring department.

In one embodiment, referring to fig. 2 and 4, the first reservoir 40 is disposed at the top of the inner barrel 20, and the two reservoirs are disposed adjacent to each other, and the first reservoir 40 and the liquid inlet 24 on the inner barrel 20 can be directly connected. The second reservoir 50 is disposed above the first reservoir 40, the second reservoir 50 is connected to the inlet 23 via a pipe, and a second control valve 51 may be disposed on the pipe, and the second control valve 51 is configured to control whether the B liquid flows to the inlet 24.

Referring to fig. 1 and 2, in one embodiment, a third reservoir 60 is disposed within the outer cylinder 10, and the third reservoir 60 is used to store a coolant, such as liquid nitrogen, for cooling the inner cylinder 20, and thus the fidelity chamber 30, and ultimately the core. The heater 12 is arranged on the outer periphery of the inner barrel 20, the heater 12 can be a resistance wire, for example, and the heater 12 can heat the inner barrel 20, further heat the fidelity chamber 30 and finally heat the rock core. A temperature sensor 4 is also provided in the outer barrel 10, the temperature sensor 4 being used to sense the temperature of the core in the fidelity chamber 30 and also being used to sense the temperature of the soil or rock at which the core is being taken while drilling. The function of maintaining the original temperature conditions is achieved by comparing the temperature in the fidelity chamber 30 with the temperature of the soil or rock at the coring site and adjusting the means of cooling or heating by the heater 12 by releasing the coolant from the third reservoir 60 so that the temperature in the fidelity chamber 30 is the same as the temperature of the soil or rock at the coring site.

Specifically, referring to fig. 1 and 2, the third reservoir 60 is disposed above the second reservoir 50, the third reservoir 60 is connected to the outer wall of the inner cylinder 20 through a pipe, a mesh-shaped capillary channel may be disposed around the outer wall of the inner cylinder 20, and after the coolant enters the capillary channel, the inner cylinder 20 may be uniformly cooled. Similarly, the heater 12 disposed around the outer wall of the inner tube 20 may have a mesh structure, so as to uniformly heat the inner tube 20. To avoid short circuits, the heater 12 is surface coated with an insulating layer. In one embodiment, the heater 12 may also be disposed on the inner wall of the tub 10. The temperature sensor 4 is disposed on the outer cylinder 10 at a position close to the outlet of the lower end portion of the inner cylinder 20 and inside the outer cylinder 10 after the closing member 3 closes so as to approach the fidelity chamber 30 without blocking the movement of the inner cylinder 20 relative to the outer cylinder 10.

Referring to fig. 1 and 2, in one embodiment, an accumulator 70 is further disposed in the outer cylinder 10, the accumulator 70 is connected to the fidelity chamber 30, and the accumulator 70 is used for pressurizing or depressurizing the fidelity chamber 30 so that the pressure in the fidelity chamber 30 is the same as the pressure at the coring position. Specifically, a pressure adjusting member (not shown) is disposed between the accumulator 70 and the fidelity chamber 30, and the pressure adjusting member is driven by the accumulator 70 to adjust the pressure of the fidelity chamber 30, so as to balance the pressure of the fidelity chamber 30. The pressure adjustment member may be, for example, a piston and the accumulator 70 may provide compressed gas to push the piston or bleed air to retract the piston. When the pressure in the fidelity chamber 30 drops, the accumulator 70 provides compressed gas to push the piston, so that the fidelity chamber 30 is compressed and reduced in volume, thereby keeping the pressure in the fidelity chamber 30 constant. When the pressure in the fidelity chamber 30 rises, the accumulator draws air to retract the piston, which causes the fidelity chamber 30 to lose pressure and increase in volume, thereby maintaining the pressure in the fidelity chamber 30 constant. A pressure sensor 5 is also arranged in the outer cylinder 10, and the pressure sensor 5 is used for detecting the pressure in the fidelity chamber 30 and can also be used for detecting the pressure of soil or rock at the coring position. When the core contains a large amount of water (or liquid component), the pressure herein refers to osmotic pressure. The function of maintaining the original pressure conditions is achieved by comparing the pressure in the fidelity chamber 30 with the pressure of the soil or rock at the coring site and adjusting the pressure adjustment member by means of the accumulator 70 so that the pressure in the fidelity chamber 30 is the same as the pressure of the soil or rock at the coring site.

Specifically, referring to FIG. 2, the accumulator 70 is disposed above the inner barrel 20, preferably above the third reservoir 60. The pressure regulating member may be disposed in a space between the inner tube 20 and the accumulator 70. In one embodiment, referring to fig. 1 and 2, the pressure sensor 5 can be disposed on the outer cylinder 10 near the outlet of the lower end of the inner cylinder 20 and inside the outer cylinder 10 after the sealing member 3 is closed, so as to access the fidelity chamber 30 and not block the movement of the inner cylinder 20 relative to the outer cylinder 10. In another embodiment, the pressure sensor 5 is located on the top wall of the fidelity chamber 30 (which may also be the inner barrel 20) and may be in direct contact with the core.

The above embodiments describe a means of coring soil or rock, and the principles of the embodiments of the present invention can also be applied to coring a large amount of liquid or gas, such as oil or gas. The difference is that the fidelity chamber 30 needs to be better sealed if appropriate adjusted for the composition of the core, for example, to detect oil or gas, which is liquid and gas. While maintaining composition, moisture, and luminous flux, liquid a and liquid B may not be in direct contact with the core, and the resulting protective film may be wrapped around the outer walls of fidelity chamber 30.

Referring to fig. 2, in order to reduce the friction between the core and the inner wall of the fidelity chamber 30, a lubricant is further disposed on the inner wall of the fidelity chamber 30, and the lubricant in this embodiment may be a graphene layer structure.

Referring to fig. 5 in conjunction with fig. 1 and 2, a control portion of the fidelity coring device according to an embodiment of the present invention includes a processing unit 100, a power source 200, connection lines, and various valves. The processing unit 100 has a predetermined program, and the predetermined program can issue specific instructions as required. Specifically, the processing unit 100 may be a PLC board provided in the outer tub 10 or an electronic computer or the like provided in a human activity area. The power supply 200 supplies power to the processing unit 100 and the heater 12, and connection lines are connected between the processing unit 100 and the respective valves for transmitting instructions of the processing unit 100. After receiving the instruction from the processing unit 100, the valve performs an action of opening or closing the valve, thereby implementing the fidelity function described in the above embodiment.

Specifically, a pipeline connecting the third reservoir 60 and the fidelity chamber 30 is provided with a third control valve 61, a pipeline connecting the accumulator 70 and the fidelity chamber 30 is provided with a fourth control valve 71, and the third control valve 61 and the fourth control valve 71 are electrically controlled valves. The processing unit 100 is electrically connected to the power supply 200, the temperature sensor 4, the pressure sensor 5, the first control valve 25, the second control valve 51, the third control valve 61, and the fourth control valve 71.

A switch 201 is arranged on a connecting line connected between the power supply 200 and the heater 12, the control unit 100 controls the switch 201 to be opened and closed, and the switch 201 is used for switching on and off the power supply 200 to realize the heating or non-heating of the heater 12.

The first control valve 25 and the second control valve 51 are electric control valves, when the rock core completely enters the fidelity cabin 30, the outer cylinder 10 is sealed by the sealing part 3, the processing unit 100 controls the first control valve 25 to be opened, the liquid A in the first liquid storage device 40 enters the fidelity cabin 30, then the processing unit 100 controls the second control valve 51 to be opened, the liquid B in the second liquid storage device 50 enters the fidelity cabin 30, mass transfer action and further phase change are carried out on the liquid A and the liquid B, a protective film is formed to cover the rock core, and isolation of the rock core and the external environment is achieved.

The temperature sensor 4 and the pressure sensor 5 may be electrically connected to the processing unit 100 in a wireless manner, thereby realizing a communication function.

Temperature sensor 4 transmits an electrical signal of the temperature within fidelity chamber 30 to processing unit 100, and processing unit 100 determines that it is necessary to warm or cool fidelity chamber 30 based on the temperature within fidelity chamber 30 compared to the temperature of the soil or rock at the coring location. Further, if the temperature needs to be raised, the processing unit 100 controls the switch 201 to be closed, and the heater 12 heats the fidelity chamber 30 until the temperature of the fidelity chamber 30 is the same as the temperature of the soil or rock at the coring position. If the temperature needs to be reduced, the processing unit 100 controls the third control valve 61 to be opened, the coolant in the third reservoir 60 flows to the fidelity chamber 30 and takes away the heat of the fidelity chamber 30, and the temperature is reduced until the temperature of the fidelity chamber 30 is the same as the temperature of the soil or rock at the coring position. In the above processes of temperature rise and temperature fall, the temperature sensor 4 can feed back the temperature of the fidelity chamber 30 to the processing unit 100 in real time, so that the instruction for controlling temperature rise or temperature fall of the processing unit 100 is updated in real time to reduce the error.

Pressure sensor 5 transmits an electrical signal of the pressure within fidelity chamber 30 to processing unit 100, and processing unit 100 determines that the pressure within fidelity chamber 30 needs to be increased or decreased based on the temperature within fidelity chamber 30 compared to the pressure of the soil or rock at the coring site. Further, if pressurization is required, the processing unit 100 controls the fourth control valve 71 to open, the compression in the accumulator 70 is controlled to enter the fidelity chamber 30, and the rock core is pressurized until the pressure in the fidelity chamber 30 is the same as the pressure of the soil or rock at the core. If the pressure needs to be reduced, the fourth control valve 71 is closed, a pressure release valve 72 is further arranged on a pipeline connected between the energy accumulator 70 and the fidelity chamber 30, the pressure release valve 72 is an electric control valve, the processing unit 100 controls the pressure release valve 72 to be opened, and gas in the fidelity chamber 30 is discharged through the pressure release valve 72 through the pipeline until the pressure of the fidelity chamber 30 is the same as the pressure of soil or rock at the coring position. During the pressurization or depressurization, the pressure sensor 5 can feed back the pressure of the fidelity chamber 30 to the processing unit 100 in real time, so that the command for controlling the pressurization or depressurization of the processing unit 100 can be updated in real time to reduce errors.

The first control valve 25, the second control valve 51, the third control valve 61 and the fourth control valve 71 may be shut-off valves, wherein the fourth control valve 71 may be a three-way shut-off valve, and one joint of the fourth control valve 71 is connected to the relief valve 72.

In order to observe the pressure in the fidelity chamber 30 in real time, the fifth control valve 15 may be connected to the fidelity chamber 30, the fifth control valve 15 may also be a three-way stop valve, one interface of the fifth control valve is connected to a pressure gauge 151, the pressure gauge is arranged at a position where a person can observe, the pressure gauge 151 may display the pressure in the fidelity chamber 30 in real time, so that the person can observe the pressure change in the fidelity chamber 30, and the pressure sensor 5, the fourth control valve 71 or the accumulator 70 and other faults are prevented from causing the pressure in the fidelity chamber 30 to be inconsistent with the actual pressure.

The opening degree of each valve can be adjusted according to needs, so that the adjusting temperature, the adjusting pressure or the mass transfer phase change speed is different.

While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention.

Claims

1. The utility model provides a fidelity coring device, a serial communication port, including urceolus and fidelity cabin, the fidelity cabin set up in the cavity of urceolus, the urceolus is used for boring the core, the fidelity cabin is used for the holding the core, be equipped with first reservoir and second reservoir in the urceolus, first reservoir with the second reservoir pass through the pipeline with the fidelity cabin is connected, first reservoir is internal to be stored with A liquid, be equipped with B liquid in the second reservoir, A liquid with B liquid is in the fidelity cabin mixes and takes place the mass transfer effect, and then produces the phase transition, and the surface forms the one deck protection film all around of core, the protection film makes the core is kept apart with external environment.

2. The fidelity coring device of claim 1, wherein said solution a is a water-dripping film former and said solution B is a solution, the solvent of said solution a is more soluble in said solution B to separate out the solute of said solution a, said solution a and said solution B are mixed and cured to form a film forming a sealing film around said core.

3. The fidelity coring device of claim 2, wherein a flow channel is provided in the interior of the side wall of the fidelity chamber, wherein the flow channel is provided with a plurality of wall openings communicating with the cavity of the fidelity chamber, wherein the first reservoir and the second reservoir are both in communication with the flow channel, and wherein the fluid a and the fluid B enter the fidelity chamber through the flow channel and the wall openings.

4. The fidelity coring device of claim 3, wherein the plurality of wall holes are evenly distributed on the circumferential sidewall of the fidelity chamber.

5. The fidelity coring device of claim 3, wherein a liquid inlet is further provided in the top wall of the fidelity chamber, said liquid inlet communicating with the flow channel and the conduits of the first reservoir and the second reservoir.

6. The fidelity coring device of claim 5, wherein a first control valve is provided on the liquid inlet, a second control valve is further provided on a conduit connecting the second reservoir to the liquid inlet, and the first control valve and the second control valve are opened sequentially and not simultaneously.

7. The fidelity coring device of claim 6, further comprising a processing unit in electrical communication with the first control valve and the second control valve, the processing unit for controlling the opening and closing of the first control valve and the second control valve.

8. The fidelity coring device of claim 1, wherein a closure is further provided on the outer barrel, and a spring is provided on the closure, and when the fidelity chamber completely enters the hollow cavity of the outer barrel, the spring drives the closure to pop out, so that the space where the hollow cavity of the outer barrel is closed by the closure is a closed space.

9. The fidelity coring device of claim 1, wherein the inner wall of the fidelity capsule is provided with a graphene layer structure for reducing friction between the core and the inner wall of the fidelity capsule.

10. The fidelity coring device of any one of claims 1 to 9, wherein the fidelity coring device further comprises an inner barrel disposed within the hollow cavity of the outer barrel, wherein the fidelity compartment is of a cylindrical construction and disposed within the hollow cavity of the inner barrel, or wherein the fidelity compartment is a void of the hollow cavity of the inner barrel.