CN115162987A - Automatic temperature control structure and method for bimetal asynchronous deformation petal valve and corer - Google Patents
Automatic temperature control structure and method for bimetal asynchronous deformation petal valve and corer Download PDFInfo
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- CN115162987A CN115162987A CN202210833934.8A CN202210833934A CN115162987A CN 115162987 A CN115162987 A CN 115162987A CN 202210833934 A CN202210833934 A CN 202210833934A CN 115162987 A CN115162987 A CN 115162987A
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- 238000000034 method Methods 0.000 title claims abstract description 11
- 239000002184 metal Substances 0.000 claims abstract description 61
- 238000006243 chemical reaction Methods 0.000 claims abstract description 29
- 239000003814 drug Substances 0.000 claims abstract description 26
- 239000000126 substance Substances 0.000 claims description 11
- 239000000463 material Substances 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims description 6
- 235000017491 Bambusa tulda Nutrition 0.000 claims description 6
- 241001330002 Bambuseae Species 0.000 claims description 6
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 6
- 239000011425 bamboo Substances 0.000 claims description 6
- 230000008859 change Effects 0.000 abstract description 6
- 238000010438 heat treatment Methods 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 6
- 229940079593 drug Drugs 0.000 description 5
- 230000007246 mechanism Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 2
- 238000011065 in-situ storage Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000005755 formation reaction Methods 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 230000036632 reaction speed Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
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- 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
-
- 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
- E21B36/00—Heating, cooling or insulating arrangements for boreholes or wells, e.g. for use in permafrost zones
- E21B36/008—Heating, cooling or insulating arrangements for boreholes or wells, e.g. for use in permafrost zones using chemical heat generating means
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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)
- Temperature-Responsive Valves (AREA)
Abstract
The invention relates to a bimetal asynchronous deformation petal valve, a coring device temperature automatic control structure and a method, comprising a circular ring and a plurality of valve clacks, wherein the valve clacks are sequentially arranged along the circumferential direction of the circular ring, each valve clack is formed by overlapping an inner metal sheet and an outer metal sheet inside and outside, and the expansion coefficient of the outer metal sheet is larger than that of the inner metal sheet. The automatic temperature control structure of the corer comprises an outer pipe, a core barrel, a medicine accommodating cavity and a bimetal asynchronous deformation petal valve, wherein a flow field inlet is formed in the top of the medicine accommodating cavity, and the bimetal asynchronous deformation petal valve is installed at the inlet of the flow field. The bimetal asynchronous deformation petal valve can be driven by temperature to deform, so that the opening/closing of the valve due to temperature change is realized; when the temperature rises, the petal valve reduces the flow rate, and the chemical reaction rate is reduced; when the temperature is reduced, the petal valve increases the flow rate, so that the chemical reaction is accelerated, the aim of automatically adjusting the temperature output through the temperature change is fulfilled, and the problem that a chemical reaction heating system cannot be adjusted in a self-adaptive manner is solved.
Description
Technical Field
The invention relates to the technical field of fidelity coring, in particular to a temperature automatic control structure and a temperature automatic control method for a bimetal asynchronous deformation petal valve and a corer.
Background
The earth depth marching is an important scientific and technical target in China at present, and because the temperature and pressure parameters of the deep core are far higher than the ground and are continuously coupled and changed in the coring process, the true physical mechanical parameters and the oil-gas reserve information of the deep core are distorted. The core objective of the deep in-situ fidelity coring device developed in the field is to keep the temperature and pressure parameters of the core constant, and the establishment of a temperature and pressure parameter stable control theoretical method in the coring process is a key scientific problem for realizing 'heat preservation' and 'pressure maintaining' coring.
Because coring systems operate at deep depths, the effect fields at the surface cannot be communicated to formations several kilometers below the surface. Therefore, the heat energy field is in a scattering state, and the temperature parameter of the coring system cannot be ensured. The deep coring system not only needs to realize the remote controllable core extraction, but also needs to ensure the constant in-situ environmental parameters of the core, and is difficult to integrate more actuating mechanisms and control mechanisms in a narrow space. The function of a thermal energy field can be enhanced by adding a chemical field into the system, and a temperature control object field model is established by utilizing the conversion of chemical energy and thermal energy. The chemical reaction heating system can effectively compensate temperature reduction, but cannot adjust temperature output according to temperature change, and does not have negative feedback control capability. A mechanism is therefore needed to solve the problem.
Disclosure of Invention
In an experiment that the temperature is used for controlling a chemical reaction and water is needed to be used as a reactant or a solvent, the water flow is used as a control object, and the flow is controlled by changing the aperture of an inlet of a flow field so as to control the speed of the reaction. The aperture size change needs to be realized through a control mechanism, and the action needs to be controlled by temperature. Therefore, the application firstly designs the bimetal asynchronous deformation petal valve with a pure mechanical structure, and the bimetal asynchronous deformation petal valve has the function of changing the aperture size according to the temperature; and then the bimetal asynchronous deformation petal valve is used on a corer to control the flow rate of a flow field inlet, and then the chemical reaction speed is controlled.
The application is realized by the following technical scheme:
the bimetal asynchronous deformation petal valve comprises a circular ring and a plurality of valve clacks, wherein the valve clacks are sequentially arranged along the circumferential direction of the circular ring;
the valve clack is formed by overlapping the inner metal sheet and the outer metal sheet inside and outside, and the expansion coefficient of the outer metal sheet is larger than that of the inner metal sheet.
Optionally, the inner metal sheet and the outer metal sheet both have three sides, and the three sides are respectively a bottom side and two symmetrical waist sides;
one ends of the two waist edges are connected with each other, the other ends of the two waist edges are respectively connected with one end of a bottom edge, the bottom edge is in a circular arc shape matched with the circular ring, the waist edges are in an arc shape, and the bottom edge of the valve clack is connected with the top of the circular ring.
In particular, the waist edge is parabolic.
Optionally, there are at least 6 flaps.
Optionally, the outer metal sheet is made of a material with a high expansion coefficient, and the inner metal sheet is made of a material with a low expansion coefficient.
In particular, the average linear expansion coefficient of the outer metal sheet is 10 times or more the average expansion coefficient of the inner metal sheet.
The application provides a corer temperature automatic control structure, hold chamber and bimetal asynchronous deformation petal valve including outer tube, a core section of thick bamboo, medicine, a core section of thick bamboo is located the outer tube, and the medicine holds the chamber and is located the core section of thick bamboo outside, and the medicine holds intracavity portion has chemical, and chemical can take place exothermic reaction with water, there is the flow field entry medicine appearance chamber top, and install in the flow field entrance bimetal asynchronous deformation petal valve.
The control method of the automatic temperature control structure of the corer comprises the following steps: after the coring device cores, water enters the medicine containing cavity through the flow field inlet and is subjected to exothermic reaction with the chemical medicine; when the temperature rises, the valve clack integrally generates inward bending deformation due to different deformation sizes of the inner metal sheet and the outer metal sheet, so that the flow is reduced, and the chemical reaction rate is reduced;
when the heat generated by the chemical reaction is less than the heat dissipated by the corer, the temperature is reduced, and the valve clack expands outwards to open, so that the chemical reaction is accelerated, the heat generated by the chemical reaction is greater than the heat dissipated by the corer, the temperature is raised, and the temperature is kept stable.
Compared with the prior art, the method has the following beneficial effects:
1, according to the bimetal asynchronous deformation petal valve, the expansion coefficient of the outer metal sheet is larger than that of the inner metal sheet, so that the deformation of the outer metal sheet and the deformation of the inner metal sheet have opposite characteristics; when the temperature rises, the outer side is deformed to be positive, the material is stretched, the inner side is deformed to be negative, the material is extruded, and under the action, the valve clack can be driven by the temperature to deform and can be used for controlling the flow; the structure is a pure mechanical structure, and the control cost is low;
2, according to the automatic temperature control structure of the corer, when the temperature rises, the petal valve reduces the flow rate, and the chemical reaction rate is reduced; when the temperature is reduced, the petal valve increases the flow rate, so that the chemical reaction is accelerated, the purpose of automatically adjusting the temperature output through the temperature variation is realized, and the problem that a chemical reaction heating system cannot be adjusted in a self-adaptive manner is solved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention.
FIG. 1 is a three-dimensional view of an embodiment of a bimetallic asynchronous deformable petal valve when fully open;
FIG. 2 is a front view of the embodiment of the bimetallic asynchronous deformable petal valve when fully opened;
FIG. 3 is a top view of the embodiment of the bi-metal asynchronous deformation petal valve when fully opened;
FIG. 4 is a bottom view of the embodiment of the bi-metal asynchronous deformation petal valve when the valve is fully opened; FIG. 5 is a three-dimensional view of the embodiment of the bi-metal asynchronous deformation petal valve when closed;
FIG. 6 is a three-dimensional view of a valve flap in an embodiment;
FIG. 7 is a bottom view of the valve flap of the embodiment;
FIG. 8 is a front view of the valve flap of the embodiment;
FIG. 9 is a front sectional view of an automatic corer temperature control structure in an embodiment;
FIG. 10 is a top view of an embodiment of an automatic corer temperature control arrangement;
FIG. 11 is a state change diagram of the bimetallic asynchronous deformation petal valve in the embodiment; wherein, (a) is a schematic diagram when fully opened, (b) is a schematic diagram when just closed by heating, (c) is a schematic diagram when the flow rate is medium, (d) is a schematic diagram when the flow rate is small, and (e) is a schematic diagram when closed.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments. It is to be understood that the described embodiments are only a few, but not all embodiments of the invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
In addition, the embodiments of the present invention and the features of the embodiments may be combined with each other without conflict. It should be noted that, in the present specification, the embodiments are all described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments may be referred to each other.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inside", "outside", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, or orientations or positional relationships that are conventionally arranged when the products of the present invention are used, or orientations or positional relationships that are conventionally understood by those skilled in the art, which are merely used for convenience of description and simplification of description, and do not indicate or imply that the devices or elements that are referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. In addition to this, the present invention is,
in the description of the present invention, it should also be noted that, unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 1 to 5, the bimetal asynchronous deformation petal valve 1 disclosed in this embodiment includes a circular ring 11 and a plurality of petal-shaped valve flaps 12, and the plurality of petal-shaped valve flaps 12 are sequentially arranged along a circumferential direction of the circular ring 11.
As shown in fig. 6 and 7, the valve flap 12 is formed by overlapping the inner metal sheet 121 and the outer metal sheet 122 inside and outside. The inner metal sheet 121 and the outer metal sheet 122 have different and large thermal expansion coefficients, and the thermal expansion coefficient of the outer metal sheet 122 is larger than that of the inner metal sheet 121. The term "asynchronous" as used herein means that the inner and outer metal sheets change asynchronously with temperature.
Because the expansion coefficient of the outer metal sheet 122 is greater than that of the inner metal sheet 121, when the temperature rises, the deformation amount of the inner metal sheet 121 is smaller than that of the outer metal sheet 122, so that the valve flap 12 is bent inwards to reduce the flow; when all the valve clacks 12 are bent inwards to a certain position, the bimetal asynchronous deformation petal valve 1 is folded to form a closed petal shape, and complete closing is realized, as shown in fig. 5; as the temperature decreases, the inner metal sheet 121 and the outer metal sheet 122 gradually return to their original shapes, so that the valve flap 12 is opened outward to form a flower-like state, as shown in fig. 1.
As shown in fig. 8, the inner metal sheet 121 and the outer metal sheet 122 have three sides, which are respectively a bottom side 123 and two symmetrical waist sides 124, one ends of the two waist sides 124 are connected to each other, the other ends of the two waist sides 124 are respectively connected to one end of the bottom side 123, the bottom side 123 is in the shape of an arc matched with the circular ring 11, the waist sides 124 are in the shape of an arc, and the bottom side 123 of the valve flap 12 is connected to the top of the circular ring 11.
In one possible design, waist edge 124 is parabolic.
In one possible design, the bottom edges 123 of the inner metal sheets 121 of two adjacent valve flaps 12 contact each other, and the bottom edges 123 of the outer metal sheets 122 of two adjacent valve flaps 12 are spaced apart.
In one possible design, the inner and outer surfaces of the flap 12 are cylindrical surfaces parallel to the inner surface of the ring 11 when the bimetallic asynchronous deformation flap valve 1 opens.
It is worth noting that the number of valve flaps 12 is set as desired. In one possible design, there are at least 6 valve flaps 12.
In one possible design, the outer metal sheet 122 is made of a high expansion coefficient material with an average linear expansion coefficient higher than 15X 10-6/deg.C, such as Cu60Zn40, feNi22Cr3, feNi20Mn6, feNi13Mn7, and Mn72Cr18Ni10 alloys.
In one possible design, the inner metal sheet 121 is a low expansion material, typically having an average expansion of 1.5X 10-6 deg.C, such as Fe-32Ni-4Co, fe-52Co-11Cr, fe-36Ni-0.2Se, fe-33Ni-7.5Co, etc.
As shown in fig. 9 and 10, the automatic temperature control structure of the coring device provided by the present embodiment includes an outer tube 2, a core barrel 3, a medicine container 4, and a bimetallic asynchronous deformation petal valve 1.
The core barrel 3 is located in the outer tube 2, the medicine containing cavity 4 is located on the outer side of the core barrel 3, chemical medicines 5 are arranged in the medicine containing cavity 4, and the chemical medicines 5 can perform exothermic reaction with water. The top of the medicine cavity 4 is provided with a flow field inlet 6, and the flow field inlet 6 is provided with a bimetallic asynchronous deformation petal valve 1. The flow field inlet 6 is fitted with an annular ring 11.
In one possible design, the medication chamber 4 is an annular chamber.
In a possible design, an annular interlayer is processed in the tube wall of the outer tube 2 to form the medicine containing cavity 4.
In one possible design, the drug reservoir 4 is formed by machining an annular sandwich in the wall of the core barrel 3.
In one possible design, at least two flow field inlets 6 are equally spaced at the top of the medication chamber 4.
The automatic temperature control method of the corer comprises the following steps:
after coring by the coring device, water enters the medicine accommodating cavity 4 through the flow field inlet 6 and is subjected to exothermic reaction with the chemical 5;
when the temperature rises, the inner metal sheet 121 and the outer metal sheet 122 have different deformation sizes, so that the whole valve clack 12 is bent inwards to deform, the flow is reduced, the chemical reaction rate is reduced, and when the heat generated by the chemical reaction is smaller than the heat dissipated by the corer, the temperature is reduced;
when the temperature is reduced, the valve clack 12 expands outwards to open, so that the chemical reaction is accelerated, the heat generated by the chemical reaction is larger than the heat dissipated by the corer, the temperature is increased, the temperature is kept stable, and the stability of a thermal energy field is realized.
The above embodiments are provided to explain the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above embodiments are merely exemplary embodiments of the present invention and are not intended to limit the scope of the present invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. Bimetal asynchronous deformation petal valve, its characterized in that: the valve comprises a circular ring (11) and a plurality of valve flaps (12), wherein the valve flaps (12) are sequentially arranged along the circumferential direction of the circular ring (11);
the valve flap (12) is formed by overlapping an inner metal sheet (121) and an outer metal sheet (122) inside and outside, and the expansion coefficient of the outer metal sheet (122) is larger than that of the inner metal sheet (121).
2. The bi-metal asynchronous deformation petal valve of claim 1, wherein: the inner metal sheet (121) and the outer metal sheet (122) are provided with three sides which are respectively a bottom side (123) and two symmetrical waist sides (124);
one ends of the two waist edges (124) are connected with each other, the other ends of the two waist edges (124) are respectively connected with one end of the bottom edge (123), the bottom edge (123) is in a circular arc shape matched with the circular ring (11), the waist edges (124) are in an arc shape, and the bottom edge (123) of the valve flap (12) is connected with the top of the circular ring (11).
3. The bimetallic asynchronous deforming petal valve of claim 2, wherein: the waist edge (124) is parabolic.
4. The bi-metal asynchronous deformation petal valve of claim 2 or 3, wherein: the bottom edges (123) of the inner metal sheets (121) of two adjacent valve flaps (12) are contacted with each other, and the bottom edges (123) of the outer metal sheets (122) of two adjacent valve flaps (12) are spaced.
5. The bimetallic asynchronous-deformation petal valve according to claim 1, characterized in that: the number of the valve flaps (12) is at least 6.
6. The bi-metal asynchronous deformation petal valve of claim 1, wherein: the outer metal sheet (122) is made of a material with a high expansion coefficient, and the inner metal sheet (121) is made of a material with a low expansion coefficient.
7. The bimetallic asynchronous deforming petal valve of claim 6, wherein: the average linear expansion coefficient of the outer metal sheet (122) is 10 times or more the average expansion coefficient of the inner metal sheet (121).
8. Coring ware temperature automatic control structure, hold chamber (4) including outer tube (2), a core section of thick bamboo (3), medicine, a core section of thick bamboo (3) are located outer tube (2), and medicine holds chamber (4) and is located a core section of thick bamboo (3) outside, and medicine holds chamber (4) inside has chemical (5), and chemical (5) can take place exothermic reaction, its characterized in that with water: the bimetal asynchronous deformation petal valve (1) as claimed in any one of claims 1 to 7, wherein a flow field inlet (6) is arranged at the top of the medicine accommodating cavity (4), and the bimetal asynchronous deformation petal valve (1) is installed at the flow field inlet (6).
9. The automatic corer temperature control structure according to claim 8, characterized in that: the top of the medicine containing cavity (4) is provided with at least two flow field inlets (6) at equal intervals.
10. A control method of an automatic corer temperature control structure as set forth in claim 8 or 9, characterized in that:
after coring by the coring device, water enters the medicine accommodating cavity (4) through the flow field inlet (6) and is subjected to exothermic reaction with the chemical medicine (5);
when the temperature rises, the valve clack (12) is integrally bent and deformed inwards due to the fact that the deformation sizes of the inner metal sheet (121) and the outer metal sheet (122) are different, the flow is reduced, and the chemical reaction rate is reduced;
when the heat generated by the chemical reaction is less than the heat dissipated by the corer, the temperature is reduced, and the valve clack (12) expands outwards to open, so that the chemical reaction is accelerated, the heat generated by the chemical reaction is greater than the heat dissipated by the corer, the temperature is increased, and the temperature is kept stable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210833934.8A CN115162987B (en) | 2022-07-15 | 2022-07-15 | Automatic temperature control structure and method for bimetal asynchronous deformation petal valve and corer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210833934.8A CN115162987B (en) | 2022-07-15 | 2022-07-15 | Automatic temperature control structure and method for bimetal asynchronous deformation petal valve and corer |
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| CN115162987A true CN115162987A (en) | 2022-10-11 |
| CN115162987B CN115162987B (en) | 2023-04-25 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3918221A (en) * | 1974-08-01 | 1975-11-11 | Kuss & Co R L | Thermostatic vent valve |
| CN103075567A (en) * | 2013-01-08 | 2013-05-01 | 北京世纪源博科技股份有限公司 | Smoke temperature control valve with self-adjusting flow |
| CN204042104U (en) * | 2014-07-03 | 2014-12-24 | 朱美淑 | Outlet water control valve seat |
| CN109779553A (en) * | 2019-03-07 | 2019-05-21 | 中国地质科学院勘探技术研究所 | A kind of totally-enclosed boring sample device |
| CN114000844A (en) * | 2021-09-30 | 2022-02-01 | 四川大学 | Bottom sealing mechanism of in-situ self-triggering film-forming while-drilling quality-guaranteeing coring device |
-
2022
- 2022-07-15 CN CN202210833934.8A patent/CN115162987B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3918221A (en) * | 1974-08-01 | 1975-11-11 | Kuss & Co R L | Thermostatic vent valve |
| CN103075567A (en) * | 2013-01-08 | 2013-05-01 | 北京世纪源博科技股份有限公司 | Smoke temperature control valve with self-adjusting flow |
| CN204042104U (en) * | 2014-07-03 | 2014-12-24 | 朱美淑 | Outlet water control valve seat |
| CN109779553A (en) * | 2019-03-07 | 2019-05-21 | 中国地质科学院勘探技术研究所 | A kind of totally-enclosed boring sample device |
| CN114000844A (en) * | 2021-09-30 | 2022-02-01 | 四川大学 | Bottom sealing mechanism of in-situ self-triggering film-forming while-drilling quality-guaranteeing coring device |
Non-Patent Citations (1)
| Title |
|---|
| 张凌;蒋国盛;宁伏龙;涂运中;吴翔;窦斌;: "天然气水合物保真取心装置内部密封技术分析" * |
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| CN115162987B (en) | 2023-04-25 |
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