CN113202435B - Pressure maintaining control device based on magnetic field effect and fidelity controller - Google Patents
Pressure maintaining control device based on magnetic field effect and fidelity controller Download PDFInfo
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- CN113202435B CN113202435B CN202110349469.6A CN202110349469A CN113202435B CN 113202435 B CN113202435 B CN 113202435B CN 202110349469 A CN202110349469 A CN 202110349469A CN 113202435 B CN113202435 B CN 113202435B
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- valve clack
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- 230000005426 magnetic field effect Effects 0.000 title claims abstract description 27
- 230000005291 magnetic effect Effects 0.000 claims abstract description 105
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 230000005484 gravity Effects 0.000 abstract description 6
- 239000000463 material Substances 0.000 description 9
- 238000005381 potential energy Methods 0.000 description 7
- 238000005553 drilling Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 239000000853 adhesive Substances 0.000 description 4
- 230000001070 adhesive effect Effects 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- 238000011065 in-situ storage Methods 0.000 description 3
- 229910052761 rare earth metal Inorganic materials 0.000 description 3
- 150000002910 rare earth metals Chemical class 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 230000005298 paramagnetic effect Effects 0.000 description 1
- 239000002907 paramagnetic material Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B25/00—Apparatus for obtaining or removing undisturbed cores, e.g. core barrels or core extractors
- E21B25/10—Formed core retaining or severing means
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B25/00—Apparatus for obtaining or removing undisturbed cores, e.g. core barrels or core extractors
- E21B25/16—Apparatus for obtaining or removing undisturbed cores, e.g. core barrels or core extractors for obtaining oriented cores
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Magnetically Actuated Valves (AREA)
- Control Of Fluid Pressure (AREA)
Abstract
The invention discloses a pressure maintaining control device based on magnetic field effect and a fidelity controller, wherein the pressure maintaining control device based on magnetic field effect comprises: the magnetic valve comprises a magnetic valve seat, a valve clack movably connected with one end of the magnetic valve seat and a triggering magnetic part for attracting the valve clack; when the magnetic valve clack is in an open state, the triggering magnetic part is opposite to the first end face of the valve clack, the first end face is the end face, facing towards the inside of the magnetic valve seat, of the valve clack, and reliable guarantee can be provided for closing between the magnetic valve clack and the valve seat through magnetic force between the valve clack and the magnetic valve seat. The attraction between the trigger magnetic part and the valve clack can well overcome the gravity of the valve clack and the friction between the valve clack and the connecting arm. The valve seat and the valve clack can be tightly closed under different states.
Description
Technical Field
The invention relates to the technical field of sealing devices of coring devices, in particular to a pressure maintaining control device and a fidelity controller based on the action of a magnetic field.
Background
The deep environment is complex, and in-situ fidelity (pressure maintaining, heat preservation, quality guarantee and the like) coring is to acquire the in-situ rock physical environment as much as possible. When core is taken in deep in-situ fidelity, one of the pressure maintaining cores is a pressure maintaining controller, the existing pressure maintaining controller mainly comprises a ball valve, a flap valve and the like, and due to the defects of unstable operation of the ball valve, insufficient pressure maintaining capacity and the like, the flap valve is enabled to control pressure maintaining to become a trend of future pressure maintaining.
Present flap valve relies on triggering shell fragment and self gravity combined action at vertical during operation to realize the upset closure, however when some environment coring, because influence such as drilling direction (level, slope), often make shell fragment-gravity trigger unreliable, even gravity becomes the closed hindrance of valve gap, the pressurize effect is difficult to reach the expectation, this greatly reduced utilizes the application scope of the coring equipment of flap valve pressurize, the development of pressurize coring device has been limited, so need develop the corer that an arbitrary direction creeps into urgently, compensate prior art's blank.
Disclosure of Invention
In view of the above-mentioned shortcomings of the prior art, the present invention provides a pressure maintaining control device and a fidelity controller based on magnetic field effect, which are used to solve the problem that the existing fidelity controller can not satisfy the drilling and coring in any direction.
The embodiment of the invention provides a pressure maintaining control device based on magnetic field effect, which comprises: the magnetic valve comprises a magnetic valve seat, a valve clack movably connected with one end of the magnetic valve seat and a triggering magnetic part for attracting the valve clack; when the valve cover is in an open state, the trigger magnetic part is opposite to the first end face of the valve cover, and the first end face is the end face of the valve cover facing the inside of the magnetic valve seat.
Optionally, the pressure maintaining control device based on the magnetic field effect, wherein the triggering magnetic member includes a first tile-shaped magnet, and a magnetizing direction of the first tile-shaped magnet is an axial direction.
Optionally, the magnetic-field-effect-based dwell control apparatus, wherein the magnetic valve seat comprises: the magnetic cylinder comprises a cylinder body and a magnet fixed inside the cylinder body.
Optionally, the magnetic field effect based holding pressure control device, wherein the magnet is a cylindrical magnet.
Optionally, the pressure maintaining control device based on the magnetic field effect, wherein a first step portion is provided on an inner wall of the cylinder body, the cylinder body is sleeved on an outer surface of the cylindrical magnet, and an end of the cylindrical magnet abuts against the first step portion.
Optionally, the pressure maintaining control device based on the magnetic field effect, wherein the cylindrical magnet is formed by splicing four second tile-shaped sheet magnets along the circumferential direction, and the magnetizing directions of the second tile-shaped sheet magnets are the same.
Optionally, the pressure maintaining control device based on the magnetic field effect, wherein the magnetizing direction of the second tile-shaped magnet is an axial direction.
Optionally, the magnetic field based dwell control device, wherein the valve flap comprises: the valve clack comprises a valve clack body, a connecting arm and a valve clack permanent magnet, wherein the connecting arm is fixed on the valve clack body and is used for being movably connected with the opening end of the magnetic valve seat, and the valve clack permanent magnet is fixed on the valve clack body.
Optionally, the pressure maintaining control device based on the magnetic field effect, wherein the material of the magnetic valve flap is iron.
In a second aspect, a fidelity controller, comprising: the pressure maintaining control device based on the magnetic field effect.
The embodiment of the invention provides a pressure maintaining control device based on a magnetic field effect, which comprises a magnetic valve seat, a valve clack and a triggering magnetic part, wherein the valve clack is movably connected with one end of the magnetic valve seat; when the valve cover is in an open state, the trigger magnetic part is opposite to the first end face of the valve cover, wherein the first end face is the end face of the valve cover facing the inside of the magnetic valve seat. The magnetic valve flap is given a closing force by triggering the magnetic force between the magnetic element and the valve flap, which force is able to overcome the weight and friction of the valve flap. Therefore, the valve seat and the valve clack can be well closed when horizontal or inclined coring is performed.
Drawings
Fig. 1 is a perspective view of a pressure maintaining control device based on magnetic field effect according to an embodiment of the present invention;
fig. 2 is an exploded view of a pressure maintaining control device based on magnetic field effect according to an embodiment of the present invention;
FIG. 3 is an exploded view of a valve cover and a magnetic valve seat provided in accordance with an embodiment of the present invention;
FIG. 4 is a cross-sectional view of a cartridge body provided by an embodiment of the present invention;
FIG. 5 is an enlarged view of portion A of FIG. 4;
FIG. 6 is a cross-sectional view of a fidelity control at the completion of coring.
Detailed Description
The invention provides a pressure maintaining control device and a fidelity controller based on magnetic field effect, and the invention is further described in detail below in order to make the purpose, technical scheme and effect of the invention clearer and clearer. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. As used herein, the singular forms "a", "an", "the" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. It will be understood that when an element is referred to as being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element or intervening elements may also be present. Further, "connected" or "coupled" as used herein may include wirelessly connected or wirelessly coupled. As used herein, the term "and/or" includes all or any element and all combinations of one or more of the associated listed items.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
As shown in fig. 1 to 2, an embodiment of the present invention provides a magnetic field effect-based pressure maintaining control device, which may be used for deep-sea pressure maintaining coring and deep-sea combustible ice pressure maintaining coring apparatuses, the magnetic field effect-based pressure maintaining control device including: the valve comprises a magnetic valve seat 10, a valve flap 20 movably connected with the magnetic valve seat 10, and a magnetic trigger 30 opposite to the valve flap 20 when the valve flap 20 is in an opening state, wherein an attractive force exists between the magnetic trigger 30 and the valve flap 20. The magnetic trigger 30 is a first tile-shaped magnet, and the magnetizing direction of the first tile-shaped magnet is an axial direction.
In this embodiment, the magnetic trigger 30 provides an attractive force to the valve flap 20 to overcome the gravity and friction of the valve flap, so that the valve seat can be in different states (e.g. horizontal and inclined at different angles), and the valve flap and the valve seat can be well matched. That is, the fit between the valve flap and the valve seat can be made unrestricted by the state of the valve seat. Meanwhile, the magnetic trigger 30 can enable the valve cover to have certain potential energy, the potential energy can be converted into kinetic energy of the valve cover to be released, and the valve cover overcomes certain gravitational potential energy by utilizing the kinetic energy, so that the valve cover is turned over and closed.
As shown in fig. 3, in one implementation manner of the present embodiment, the valve flap 20 includes a valve flap body 200, a connecting arm 201 fixed on the valve flap body 200 for movably connecting with the open end of the magnetic valve seat 10, and a valve flap permanent magnet 202 fixed on the valve flap body 201.
Specifically, the valve flap body 200 may be made of the same material as the magnetic valve seat, or may be made of a different material. The middle part of the valve clack body is provided with a groove 203 for fixing the valve clack permanent magnet 202, and it is easy to understand that the size of the groove 203 can be set according to actual needs.
In this embodiment, the valve cover 20 is made of a paramagnetic material with high magnetic permeability and high compressive strength, such as an iron valve cover. The attracted permanent magnets need paramagnetic substances to neutralize the magnetic potential energy of the attracted permanent magnets, the attracted permanent magnets can enable the valve cover to have certain potential energy according to the minimum potential energy principle, the potential energy is converted into kinetic energy of the valve cover to be released after the limiting is removed, and therefore the closing effect is achieved, and after the valve cover is closed, the permanent magnets in the valve seat can enable the valve cover to have certain magnetic potential, so that the gravitational potential is overcome, and the continuous closing effect is achieved. The valve seat is made of stainless steel, and because the stainless steel is a low-magnetic-conductivity substance, the magnetic field in the valve seat can not generate magnetic potential on the valve seat, so that the closing track of the valve cover can not be influenced.
Illustratively, the shape of the groove 203 is a rectangle, a screw hole is arranged at the bottom of the rectangle groove, a screw hole matched with the screw hole at the bottom of the groove is arranged on the valve flap permanent magnet 202, and the valve flap permanent magnet 202 is fixed in the rectangle groove through a screw. It should be noted that the magnetic flap herein means that the flap is made magnetic by providing a flap permanent magnet 202 on the flap. Of course, the valve flap can be made of magnetic material if desired. The valve flap permanent magnet 202 may be made of different permanent magnet materials according to requirements, for example, may be made of rare earth permanent magnet materials. It should be noted that the flap permanent magnet 202 may provide a repulsive force for the flap body 200, that is, it may be understood that the magnetic direction of the flap permanent magnet is different from the magnetic direction of the magnetic trigger, the flap permanent magnet provides a repulsive force for the flap body, the magnetic trigger provides an attractive force for the flap body, and the flap body may be turned over and closed more quickly under the synergistic effect of the two forces.
Further, a protection sheet 204 is further disposed on the valve flap, and the protection sheet 204 is disposed on the surface of the groove 203 and fixed by four screws to protect the valve flap permanent magnet 202 inside the groove 203 and prevent external dust and foreign matter from affecting the magnetism of the valve flap permanent magnet 202.
It should be noted that, when the permanent magnet is disposed on the valve flap to provide a repulsive force for the valve flap, and the attraction force provided by the trigger magnetic member is combined to realize the rapid turning-over closing of the valve flap, the presence of the groove reduces the overall strength of the valve flap due to the need to form the groove on the valve flap, which is not suitable for the use environment of high pressure maintenance, so that a method of only providing the attraction force by the trigger magnetic member may be selected. When the valve cover is obliquely and upwards drilled in some special environments (the drilling angle is strict, and the pressure maintaining capacity is not high), such as a coal mine tunnel, the valve cover is required to have larger rotary closing capacity, and the mode of arranging the permanent magnet on the valve clack can be selected.
In this embodiment, the connecting arm 201 may be an elastic piece, one end of the elastic piece is fixed on the valve flap body, and the other end of the elastic piece includes an O-shaped connecting portion, and the O-shaped connecting portion is movably connected to the valve seat. It is easy to understand that the joint of the elastic piece and the valve clack body is positioned on the same straight line with the groove 203. That is, the connection point of the groove 203 and the elastic sheet and the valve flap body are all located on the central axis of the valve flap body. The joints of the groove 203 and the elastic piece with the valve clack body are all positioned on the central axis of the valve clack body, so that when the magnetic valve clack is repelled by the trigger magnetic piece, the magnetic valve clack cannot be inclined and deflected.
In one implementation of the present embodiment, the magnetic valve seat 10 includes a cylinder body 100 and a magnet 110 fixed inside the cylinder body 100.
Specifically, referring to fig. 5, the cylinder body 100 is a cylindrical cylinder body with two open ends, and the material of the cylinder body 100 may be a metal material, such as cast iron, steel, etc. One end of the barrel body 100 is provided with a concave connecting portion 101, the concave connecting portion 101 comprises two hanging lugs, screw holes are formed in the hanging lugs, the O-shaped connecting portion of the connecting arm is arranged in the concave connecting portion 101, and a bolt sequentially penetrates through the screw holes in the hanging lugs and through holes in the connecting arm to movably connect the connecting arm with the barrel body 100.
In this embodiment, the magnet 110 is a cylindrical magnet, and the cylindrical magnet may be formed by splicing at least two tile-shaped magnets along a circumferential direction, for example, four tile-shaped magnets along a circumferential direction, where the magnetizing directions of the tile-shaped magnets may be the same or different, and the magnetizing directions include an axial magnetizing direction and a radial magnetizing direction. Wherein, adjacent two tile-shaped sheet magnets in the four tile-shaped sheet magnets can be bonded together through an adhesive. The type of adhesive used may be an epoxy type adhesive, but may of course be other types of adhesives.
Further, the number of the magnets 110 may be set as required, for example, the number of the tile-shaped sheet magnets may be set to six, eight, etc., and the magnetic direction may be flexibly adjusted by changing the magnetizing direction of the tile-shaped sheet.
For example, when the magnet 110 is formed by splicing six tile-shaped magnets, the magnetizing directions of two adjacent tile-shaped magnets are not set differently, or two adjacent six tile-shaped magnets are grouped into one group and divided into three groups, where the magnetizing direction of one group is different from the magnetizing directions of the other two groups (the magnetizing direction of one group is radial, the magnetizing directions of the other two groups are axial, or the magnetizing direction of one group is axial, and the magnetizing directions of the other two groups are radial).
In this embodiment, the material of the cylindrical magnet may be a rare earth permanent magnet material, such as rare earth permanent magnet material with a trademark of N52. The magnetic valve flap can be tightly closed with the valve seat by arranging a magnet in the valve seat.
As shown in fig. 4, in an implementation manner of the present embodiment, a first step 120 is disposed on an inner wall of the cylindrical body 100, the first step 120 divides an inner space of the cylindrical body 100 into two parts (e.g., a first part and a second part, where the first part is a part close to the magnetic valve flap, and the second part is a part far from the magnetic valve flap), the first step 120 is located at an upper middle portion of the cylindrical body 100 (it can be understood that lengths of two parts of the inner space of the cylindrical body divided by the first step 120 are different, e.g., of the two parts of the inner space of the cylindrical body divided by the first step, a length of the first part occupies 1/3 of the entire length of the cylindrical body, a length of the second part occupies 2/3 of the entire length of the cylindrical body, or a length of the first part occupies 1/4 of the entire length of the cylindrical body, the length of the second portion is 3/4 times the length of the entire cylindrical body), when assembling, the cylindrical body 100 can be sleeved on the outer surface of the cylindrical magnet 110, and one end of the cylindrical magnet abuts against the first step portion 120, namely, the cylindrical magnet 110 is arranged along the first step portion.
In this embodiment, the cylindrical magnet 110 is located at the second portion. The cylindrical magnet is arranged on the second part (far away from the magnetic valve flap) so as to avoid interference on the opening of the magnetic valve flap in the sampling process.
Based on the same inventive concept, the embodiment of the present invention further provides a fidelity controller, which is combined with fig. 6, and includes a drilling machine outer cylinder 40, a pre-tightening force rod 50, a magnetic valve flap 20, a valve flap permanent magnet 202 on the magnetic valve flap, a magnet 110 of the cylinder body 100 arranged in the same body 100, and a triggering magnetic member 30 for attracting the magnetic valve flap. After the coring is completed, the magnetic valve clack 20 triggers the magnetic part 30 to provide an attraction force for the magnetic valve clack after being not blocked, the magnetic valve clack is turned inwards (towards the direction inside the valve seat), when the magnetic valve cover overcomes the self gravity and the frictional resistance under the action of the magnetic force, the magnetic valve cover moves to the opening of the valve seat to realize the closing of the valve seat, and meanwhile, because the magnet is arranged in the valve seat, the magnet also provides an attraction force for the magnetic valve seat to firmly fix the magnetic valve cover at the opening of the valve seat. It should be noted that a sealing device (not shown in the figure) is further disposed at an end of the magnetic valve seat away from the magnetic valve cover, and the magnetic valve seat can be sealed by the sealing device to form a closed space, where a specific structure of the sealing device is a structure commonly used in an existing fidelity controller, and is not described herein again.
In this embodiment, the fidelity controller is provided with the pressure maintaining control device based on the magnetic field effect, and the valve cover of the pressure maintaining control device based on the magnetic field effect can be closed at different angles, so that the fidelity controller can perform coring at different drilling angles, thereby greatly facilitating the coring operation, and meanwhile, the structure of the fidelity controller is simpler due to the utilization of magnetic force.
In summary, an embodiment of the present invention provides a pressure maintaining control device and a fidelity controller based on magnetic field effect, which includes: the magnetic valve comprises a magnetic valve seat, a valve clack movably connected with one end of the magnetic valve seat, and a triggering magnetic part for attracting the valve clack; when the valve cover is in an open state, the trigger magnetic part is opposite to the first end face of the valve cover, the first end face is the end face of the valve cover facing the inside of the magnetic valve seat, and the magnetic force between the valve clack and the valve seat can provide reliable guarantee for the closing between the valve clack and the valve seat. Meanwhile, attraction between the trigger magnetic part and the valve clack can well overcome the gravity of the valve clack and friction between the valve clack and the connecting arm (elastic sheet). Therefore, the valve seat and the valve clack can be tightly closed under different states. Meanwhile, the valve cover can have certain magnetic potential due to the magnet in the valve seat, so that the gravitational potential is overcome, and the effect of continuous closing is achieved.
It is to be understood that the invention is not limited to the examples described above, but that modifications and variations may be effected thereto by those of ordinary skill in the art in light of the foregoing description, and that all such modifications and variations are intended to be within the scope of the invention as defined by the appended claims.
Claims (7)
1. A pressure maintaining control device based on magnetic field action is characterized by comprising: the magnetic valve comprises a magnetic valve seat, a valve clack movably connected with one end of the magnetic valve seat and a triggering magnetic part for attracting the valve clack; when the valve clack is in an opening state, the triggering magnetic part is opposite to a first end face of the valve clack, and the first end face is an end face of the valve clack facing the inside of the magnetic valve seat;
the valve flap comprises: the valve clack permanent magnet is fixed on the valve clack body, and the valve clack permanent magnet is fixed on the valve clack body; the middle part of the valve clack body is provided with a groove for fixing the valve clack permanent magnet;
the connecting arm is an elastic sheet, one end of the elastic sheet is fixed on the valve clack body, the other end of the elastic sheet comprises an O-shaped connecting part, and the elastic sheet is movably connected with the valve seat through the O-shaped connecting part; the valve clack is an iron valve clack; the valve seat is made of stainless steel;
the magnetic valve seat includes: the magnetic cylinder comprises a cylinder body and a magnet fixed inside the cylinder body;
the magnetic direction of the valve clack permanent magnet is different from that of the trigger magnetic part.
2. The magnetic-field-effect-based dwell control device of claim 1, wherein the trigger magnetic element is a first tile-shaped magnet, and the magnetizing direction of the first tile-shaped magnet is an axial direction.
3. The magnetic-field-effect-based dwell control apparatus according to claim 1, characterized in that the magnet is a cylindrical magnet.
4. The pressure holding control device based on magnetic field action according to claim 3, wherein a first step portion is provided on an inner wall of the cylinder body, the cylinder body is fitted over an outer surface of the cylindrical magnet, and an end portion of the cylindrical magnet abuts against the first step portion.
5. The pressure holding control device based on magnetic field action according to claim 3, wherein the cylindrical magnet is formed by splicing four second tile-shaped sheet magnets in the circumferential direction, and the magnetizing directions of the second tile-shaped sheet magnets are all the same.
6. The magnetic-field-effect-based dwell control apparatus of claim 5, wherein the magnetizing direction of the second tile-shaped sheet magnet is an axial direction.
7. A fidelity controller, comprising: the magnetic field effect-based dwell control apparatus of any one of claims 1-6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110349469.6A CN113202435B (en) | 2021-03-31 | 2021-03-31 | Pressure maintaining control device based on magnetic field effect and fidelity controller |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110349469.6A CN113202435B (en) | 2021-03-31 | 2021-03-31 | Pressure maintaining control device based on magnetic field effect and fidelity controller |
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| Publication Number | Publication Date |
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| CN113202435A CN113202435A (en) | 2021-08-03 |
| CN113202435B true CN113202435B (en) | 2022-08-23 |
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| CN202110349469.6A Active CN113202435B (en) | 2021-03-31 | 2021-03-31 | Pressure maintaining control device based on magnetic field effect and fidelity controller |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113958279A (en) * | 2021-10-29 | 2022-01-21 | 深圳大学 | Magnetic force triggering multidirectional pressure maintaining coring device with simple structure and rock sample extraction method |
| CN116591631B (en) * | 2023-06-05 | 2024-09-17 | 深圳大学 | Pressure maintaining controller pretightening force enhancing mechanism utilizing external rotation and using method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202082440U (en) * | 2011-01-21 | 2011-12-21 | 徐晓明 | Flue check valve with self-attractive force |
| CN204610984U (en) * | 2015-05-08 | 2015-09-02 | 福建科达消防阀门制造有限公司 | A kind of safety check |
| CN108953624A (en) * | 2018-08-13 | 2018-12-07 | 四川大学 | Hauberk formula flap valve |
| CN111911638A (en) * | 2020-07-01 | 2020-11-10 | 深圳大学 | Pressure maintaining controller capable of drilling in any direction based on magnetic force triggering |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9163479B2 (en) * | 2007-08-03 | 2015-10-20 | Baker Hughes Incorporated | Flapper operating system without a flow tube |
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2021
- 2021-03-31 CN CN202110349469.6A patent/CN113202435B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202082440U (en) * | 2011-01-21 | 2011-12-21 | 徐晓明 | Flue check valve with self-attractive force |
| CN204610984U (en) * | 2015-05-08 | 2015-09-02 | 福建科达消防阀门制造有限公司 | A kind of safety check |
| CN108953624A (en) * | 2018-08-13 | 2018-12-07 | 四川大学 | Hauberk formula flap valve |
| CN111911638A (en) * | 2020-07-01 | 2020-11-10 | 深圳大学 | Pressure maintaining controller capable of drilling in any direction based on magnetic force triggering |
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| CN113202435A (en) | 2021-08-03 |
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