CN115614002A - Self-controlled slow-release device - Google Patents
Self-controlled slow-release device Download PDFInfo
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- CN115614002A CN115614002A CN202110791877.7A CN202110791877A CN115614002A CN 115614002 A CN115614002 A CN 115614002A CN 202110791877 A CN202110791877 A CN 202110791877A CN 115614002 A CN115614002 A CN 115614002A
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- 238000013268 sustained release Methods 0.000 claims abstract description 19
- 239000012730 sustained-release form Substances 0.000 claims abstract description 19
- 239000003814 drug Substances 0.000 claims abstract description 6
- 230000007797 corrosion Effects 0.000 claims description 21
- 238000005260 corrosion Methods 0.000 claims description 21
- 239000003112 inhibitor Substances 0.000 claims description 15
- 241000191291 Abies alba Species 0.000 claims description 9
- -1 hydroxyethyl diglycolic acid Chemical compound 0.000 claims description 7
- 238000000605 extraction Methods 0.000 claims description 6
- JSYPRLVDJYQMAI-ODZAUARKSA-N (z)-but-2-enedioic acid;prop-2-enoic acid Chemical compound OC(=O)C=C.OC(=O)\C=C/C(O)=O JSYPRLVDJYQMAI-ODZAUARKSA-N 0.000 claims description 4
- 229920002126 Acrylic acid copolymer Polymers 0.000 claims description 4
- DBVJJBKOTRCVKF-UHFFFAOYSA-N Etidronic acid Chemical compound OP(=O)(O)C(O)(C)P(O)(O)=O DBVJJBKOTRCVKF-UHFFFAOYSA-N 0.000 claims description 4
- NWONKYPBYAMBJT-UHFFFAOYSA-L zinc sulfate Chemical compound [Zn+2].[O-]S([O-])(=O)=O NWONKYPBYAMBJT-UHFFFAOYSA-L 0.000 claims description 4
- 229960001763 zinc sulfate Drugs 0.000 claims description 4
- 229910000368 zinc sulfate Inorganic materials 0.000 claims description 4
- 150000007529 inorganic bases Chemical class 0.000 claims description 3
- 238000013270 controlled release Methods 0.000 claims 6
- 238000004519 manufacturing process Methods 0.000 abstract description 28
- 239000003129 oil well Substances 0.000 abstract description 12
- 229910052751 metal Inorganic materials 0.000 abstract description 5
- 239000002184 metal Substances 0.000 abstract description 5
- 230000004308 accommodation Effects 0.000 abstract description 3
- 239000002253 acid Substances 0.000 abstract description 3
- 239000000463 material Substances 0.000 abstract description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 20
- 239000010779 crude oil Substances 0.000 description 12
- 239000003921 oil Substances 0.000 description 11
- 229910002092 carbon dioxide Inorganic materials 0.000 description 10
- 239000001569 carbon dioxide Substances 0.000 description 10
- 239000007787 solid Substances 0.000 description 9
- 239000003795 chemical substances by application Substances 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 5
- 230000002378 acidificating effect Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 2
- 230000005764 inhibitory process Effects 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- GCLGEJMYGQKIIW-UHFFFAOYSA-H sodium hexametaphosphate Chemical compound [Na]OP1(=O)OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])O1 GCLGEJMYGQKIIW-UHFFFAOYSA-H 0.000 description 1
- 235000019982 sodium hexametaphosphate Nutrition 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000001577 tetrasodium phosphonato phosphate Substances 0.000 description 1
- 239000002699 waste material Substances 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
- E21B41/00—Equipment or details not covered by groups E21B15/00 - E21B40/00
- E21B41/02—Equipment or details not covered by groups E21B15/00 - E21B40/00 in situ inhibition of corrosion in boreholes or wells
-
- 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
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
- E21B43/164—Injecting CO2 or carbonated water
Landscapes
- 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)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
Abstract
The application discloses automatic control sustained-release devices, install the device on the defeated production pipeline of production tree production valve connection outward, which comprises a housin, braced skeleton, connecting tube and temperature controller, the casing is inside to have certain accommodation space, place braced skeleton inside the casing, braced skeleton includes a plurality of supporting component, place automatic control sustained-release medicament on each supporting component, be provided with a plurality of connecting tube on the casing, the connecting tube is used for the side pipeline of intercommunication casing and production tree, a temperature controller of externally mounted at the casing, automatic control sustained-release medicament is applyed to the casing inside, reduce the corruption of acid material to the metal pipeline and the valve etc. of production tree, reduce the breakage rate of production flow, the extension pipeline, the life of valve etc., thereby improve the production hour rate of oil well, improve the oil well productivity.
Description
Technical Field
The invention relates to the technical field of petroleum collection, in particular to a self-control slow release device.
Background
The carbon dioxide huff and puff oil recovery technology is a technology which is applied to the oil field at present and has a good effect of improving the recovery ratio. The technology is characterized in that a large amount of carbon dioxide exists in wellhead oil production equipment in the processes of carbon dioxide injection, well closing and open flow. The carbon dioxide flooding technology is a technology for injecting carbon dioxide into an oil layer to improve the oil recovery rate of an oil field. The carbon dioxide does not form a miscible front when it first contacts the formation crude oil, but under the appropriate conditions of pressure, temperature and crude oil composition, the carbon dioxide can form a miscible front. The supercritical fluid will extract heavier hydrocarbons from the crude oil and continually condense the gas displacing the front. The carbon dioxide and crude oil then become a miscible liquid, forming a single liquid phase, which effectively displaces the formation crude oil to the production well.
In the production process of the carbon dioxide injection oil well, a large amount of carbon dioxide can be carried in the produced crude oil, acidic substances can be generated after the crude oil meets water, the acidic substances corrode metal pipelines, valves and the like, frequent puncture and leakage of the production pipelines, well heads, the valves and the like are caused, the crude oil overflows in a large amount, the environment is polluted, and the labor intensity is increased for workers.
Based on the situation, the self-control slow release device is designed, the slow release agent can be added into a production pipeline at a constant speed, and the improvement of the production time rate of an oil well and the oil well productivity is particularly important.
Disclosure of Invention
The embodiment of the invention provides a self-control slow release device which can realize that a slow release agent is added into a production pipeline at a constant speed, and improve the production time rate of an oil well and the productivity of the oil well.
The invention provides a self-controlled slow-release device, comprising: the oil extraction tree comprises a shell, a plurality of oil extraction tree main pipelines and a plurality of oil extraction tree branch pipelines, wherein a certain accommodating space is formed in the shell, and two ends of the shell in the length direction are respectively connected with the oil extraction tree main pipelines; the supporting framework is arranged in the accommodating space inside the shell and comprises supporting parts arranged in an array manner along the height direction of the supporting framework, each supporting part is used for supporting a self-control slow-release medicament, and the self-control slow-release medicament comprises 15-19% of hydroxyethyl diglycolic acid (HEDP) with the concentration of 20-25%, 17-19% of maleic acid-acrylic acid copolymer with the concentration of 30-39%, 11-13% of alkyl imidazoline corrosion inhibition with the concentration of 30-60%, 0.1-10% of zinc sulfate and 2-2.5% of inorganic base; and the connecting pipeline is arranged on the outer surface of the shell, one end of the connecting pipeline is communicated with the inner space of the shell, and the other end of the connecting pipeline is communicated with a side pipeline of the Christmas tree.
In some optional embodiments, the housing includes a cylinder and a cover, the cylinder is detachably connected to one end of the cover, a first flange is disposed on an upper surface of the cover facing away from the cylinder, and one end of the cylinder facing away from the cover is disposed.
In some optional embodiments, the end of the cylinder body away from the cover body and facing away from the accommodating space is provided with a second flange, and the surface of the cover body facing away from the accommodating space is provided with a handle.
In some optional embodiments, a bottom end of the cylinder body, which faces away from the accommodating space, is provided with a supporting leg, and a side wall of the cylinder body is provided with a vent pipe.
In some optional embodiments, a side of the bottom end of the cylinder body, which faces away from the accommodating space, is provided with a supporting leg.
In some optional embodiments, the outer surface of the cylinder body is provided with a temperature controller.
In some alternative embodiments, the support frame comprises a fixing part, and any two adjacent support parts are connected through at least one fixing part.
In some optional embodiments, the supporting member is a ring-shaped structure, the thickness of the supporting member is equal to the thickness of the fixing member, and the height of the supporting member is equal to the width of the fixing member.
In some alternative embodiments, the distance between any two adjacent support members is equal.
In some optional embodiments, the filter bottle is arranged on the inner surface of the support framework, and is provided with a plurality of through holes, and the diameter of each through hole is less than 6.5mm.
In some optional embodiments, the side wall of the cylinder body is provided with a vent pipe, and the vent pipe is communicated with the accommodating space.
Compared with the prior art, the invention has the following technical effects:
the embodiment of the application provides a pair of automatic control slow-release devices, install the device on the defeated production pipeline that production valve of production tree connects outward, which comprises a housin, supporting framework and connecting tube, the casing is inside to have certain accommodation space, place supporting framework inside the casing, supporting framework includes a plurality of supporting components, place the solid sustained-release agent on each supporting component, be provided with a plurality of connecting tube on the casing, the connecting tube is used for the side pipeline of intercommunication casing and production tree, apply the solid sustained-release agent in the inside of casing, reduce the corruption of acid material to the metal pipeline and the valve etc. of production tree, reduce the breakage rate of production procedure, the extension pipeline, the life of valve etc., thereby improve the production hour rate of oil well, improve the oil well productivity.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.
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, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.
Fig. 1 is a schematic structural diagram of an autonomous sustained release apparatus according to an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a support skeleton in the self-controlled sustained-release device according to an embodiment of the present invention.
Fig. 3 is a schematic structural diagram of a cover body in a self-controlled sustained-release device according to an embodiment of the present invention.
Fig. 4 is a schematic view of a partial structure of a housing in a self-controlled sustained-release device according to an embodiment of the present invention.
Reference numerals: 1-a shell; 11-a cylinder body; 111-support legs; 112-a blow-down pipe; 12-a cover body; 13-a first flange; 14-a second flange; 15-a handle; 16-temperature controller; 2-supporting the framework; 21-a support member; 22-a filter flask; 3-connecting a pipeline; 31-an outlet conduit; 32-a first inlet duct; 33-second inlet duct.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The application provides a self-control sustained-release device, including: the device comprises a shell 1, a main pipeline and a control system, wherein a certain accommodating space is formed in the shell 1, and two ends of the shell 1 in the length direction are respectively connected with the main pipeline of the Christmas tree; the supporting framework 2 is arranged in an accommodating space in the shell 1 and comprises supporting parts 21 arrayed along the height direction of the supporting framework, each supporting part is used for supporting a self-control corrosion inhibitor, and the self-control corrosion inhibitor comprises 15-19% of hydroxyethyl diglycolic acid (HEDP) with the concentration of 20-25%, 17-19% of maleic acid-acrylic acid copolymer with the concentration of 30-39%, 11-13% of alkylimidazoline corrosion inhibitor with the concentration of 30-60%, 0.1-10% of zinc sulfate and 2-2.5% of inorganic base; and the connecting pipeline 3 is arranged on the outer surface of the shell 1, one end of the connecting pipeline is communicated with the inner space of the shell 1, and the other end of the connecting pipeline is communicated with a side pipeline of the Christmas tree.
Specifically, the self-control corrosion inhibitor is subjected to the processes of kneading, stirring, mixing, evaporative concentration, drying, solidification and the like, can be used for an oil field crude oil export system with a solid dosing system, has good corrosion and scale prevention effects on the crude oil export system, and avoids the corrosion of acidic components in the system on the crude oil export system.
Further, stirring 15-19% of hydroxyethyl diglycolic acid (HEDP) with the concentration of 20-25%, 17-19% of maleic acid-acrylic acid copolymer with the concentration of 30-39%, 11-13% of alkyl imidazoline corrosion inhibition with the concentration of 30-60% and 0.1-10% of zinc sulfate at normal temperature; 2 to 2.5 percent of inorganic alkali is added under the condition that the PH value is 8.5. Heating the self-control corrosion inhibitor at the temperature of 150 ℃ until the water content in the self-control corrosion inhibitor is 10-18%; then adding calcium sulfate and sodium hexametaphosphate, mixing and stirring, pressing for more than 40 minutes under the high pressure of 10MPa, and pressing the self-control corrosion inhibitor into a proper shape through a mold.
Furthermore, the self-control corrosion inhibitor can be granular or solid disc-shaped.
In some alternative embodiments, the connecting duct 3 comprises an outlet duct 31, a first inlet duct 32 and a second inlet duct 33, the outlet duct 31 being arranged at one end of the housing 1, the second inlet duct 33 and the first inlet duct 32 being arranged at the other end of the housing 1, the first inlet duct 32 being coaxial with the second inlet duct 33.
Specifically, when the self-control corrosion inhibitor is in a solid disc shape, the first inlet pipeline 32 can be closed, and the outlet pipeline 31 and the second inlet pipeline 33 can be opened; when the self-control corrosion inhibitor is granular, the second inlet pipeline 33 can be closed, and the inlet pipeline 31 and the first inlet pipeline 32 are opened, so that the waste of the granular self-control corrosion inhibitor can be avoided.
Specifically, the embodiment of the application provides a self-control sustained-release device, install the device on the defeated production pipeline that production valve of christmas tree connects outward, including casing 1, supporting framework 2 and connecting tube 3, casing 1 is inside to have certain accommodation space, place supporting framework 2 inside casing 1, supporting framework 2 includes a plurality of supporting parts 21, place solid sustained-release agent on each supporting part 21, be provided with a plurality of connecting tube 3 on casing 1, connecting tube 3 is used for the side pipeline of intercommunication casing 1 and christmas tree, apply solid sustained-release agent in casing 1's inside, reduce the corruption of acid material to metal pipeline and valve etc. of christmas tree, reduce the breakage rate of production procedure, the life of extension pipeline, valve etc., thereby improve the production hour rate of oil well, improve oil well productivity.
In some alternative embodiments, the housing 1 includes a cylinder 11 and a cover 12, the cylinder 11 is detachably connected to one end of the cover 12, a first flange 13 is disposed on an upper surface of the cover 12 facing away from the cylinder 11, and one end of the cylinder 11 facing away from the cover 12 is disposed. The end of the cylinder 11 remote from the cover 12 and facing away from the receiving space is provided with a second flange 14.
Specifically, the upper surface of the cover body 12 facing away from the cylinder body 11 is provided with a first flange 13, the first flange 13 is used for communicating with a pipeline of the christmas tree, the first flange 13 is installed on the cylinder body 11 by welding, a second flange 14 is arranged on the side, facing away from the accommodating space, of the bottom end of the cylinder body 11, the second flange 14 is used for communicating with the pipeline of the christmas tree, and the second flange 14 is installed on the cylinder body 11 by welding.
Alternatively, the cylinder 11 and the cap 12 are hermetically connected by a screw.
In some alternative embodiments, the bottom end of the cylinder 11 facing away from the accommodating space is provided with a support leg 111, the support leg 111 can be folded, and the surface of the cover 12 facing away from the accommodating space is provided with a handle 15.
In some optional embodiments, the temperature controller 16 is disposed on the outer surface of the cylinder 11, the temperature controller 16 is mounted on the outer surface of the cylinder 1, and is connected with a contact, and the circuit is connected with a power supply.
In some optional embodiments, the supporting member 21 is an annular structure, and the annular structure can be used for placing a porous cake-shaped solid sustained-release agent, so that the corrosion damage of acidic substances to metal pipelines and valves can be effectively reduced through the release of the sustained-release particles. The production efficiency of the oil well is improved, the environmental pollution and the labor intensity of workers are reduced, and the safe production is ensured.
In some optional embodiments, the supporting framework includes a fixing part 22, any two adjacent supporting parts 21 are connected by at least one fixing part 22, specifically, the fixing part 22 is a steel plate, any two adjacent supporting parts 21 can be supported by at least one fixing part 22, two ends of the fixing part 22 are respectively connected to the supporting parts 21, and optionally, two ends of the fixing part 22 are respectively welded to the supporting parts 21.
In some alternative embodiments, the supporting member 21 is a ring-shaped structure, the thickness of the supporting member 21 is equal to the thickness of the fixing member 22, the height of the supporting member 21 is equal to the width of the fixing member 22, and the height of the supporting member 21 is equal to the width of the fixing member 22.
Further, the distance between any two adjacent ring structures is equal.
In some optional embodiments, the self-controlled slow release device further comprises a filter bottle, the filter bottle is arranged on the inner surface of the support framework, the end cover is detachably arranged on the filter bottle, the filter bottle is provided with a plurality of through holes, and the diameter of each through hole is smaller than 6.5mm. The self-control corrosion inhibitor is arranged in the filter bottle, the self-control corrosion inhibitor in a solid state can be screened to be in a granular state, and when the granular self-control corrosion inhibitor flows into the crude oil output system and the collection and transportation system, the corrosion of chemical components in the system to the system flow is reduced.
In some alternative embodiments, the side wall of the cylinder 11 is provided with a vent 112.
In another aspect, the invention provides a petroleum flow conduit comprising a self-controlled sustained release device as defined in any preceding claim.
In addition, the term "and/or" herein is only one kind of association relationship describing the association object, and means that there may be three kinds of relationships, for example, a and/or B, and may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter associated objects are in an "or" relationship.
It should be understood that in the present embodiment, "B corresponding to a" means that B is associated with a, from which B can be determined. It should also be understood that determining B from a does not mean determining B from a alone, but may be determined from a and/or other information.
While the invention has been described with reference to specific embodiments, the invention is not limited thereto, and various equivalent modifications and substitutions can be easily made by those skilled in the art within the technical scope of the invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (11)
1. An autonomous controlled release device, comprising:
the oil extraction tree comprises a shell (1), wherein a certain accommodating space is formed in the shell (1), and two ends of the shell (1) in the length direction are respectively connected with a main oil extraction tree pipeline;
the supporting framework (2) is arranged in the accommodating space inside the shell (1) and comprises supporting parts (21) arrayed along the height direction of the supporting framework, each supporting part is used for supporting a self-control slow-release medicament, and the self-control slow-release medicament comprises 15-19% of hydroxyethyl diglycolic acid (HEDP) with the concentration of 20-25%, 17-19% of maleic acid-acrylic acid copolymer with the concentration of 30-39%, 11-13% of alkyl imidazoline corrosion inhibitor with the concentration of 30-60%, 0.1-10% of zinc sulfate and 2-2.5% of inorganic base;
the connecting pipeline (3) is arranged on the outer surface of the shell (1), one end of the connecting pipeline is communicated with the inner space of the shell (1), and the other end of the connecting pipeline is communicated with a side pipeline of the Christmas tree.
2. An automatic controlled release device according to claim 1, characterized in that the housing (1) comprises a cylinder body (11) and a cover body (12), the cylinder body (11) is detachably connected with one end of the cover body (12), the upper surface of the cover body (12) facing away from the cylinder body (11) is provided with a first flange (13), and the end of the cylinder body (11) facing away from the cover body (12) is provided.
3. An autonomous controlled release device according to claim 2, characterized in that the end of the cylinder (11) remote from the cover (12) and facing away from the outer surface of the receiving space is provided with a second flange (14).
4. An automatic controlled release device according to claim 3, characterized in that the bottom end of the cylinder body (11) is provided with support legs (111) on the side facing away from the receiving space, and the surface of the cover body (12) facing away from the receiving space is provided with a handle (15).
5. The self-controlled slow-release device according to claim 4, characterized in that the outer surface of the cylinder body (11) is provided with a temperature controller (16).
6. The self-regulating sustained release device according to claim 1, wherein the support skeleton comprises fixing members (22), and any two adjacent support members (21) are connected by at least one of the fixing members (22).
7. The self-controlled sustained release apparatus according to claim 6, wherein the support member (21) has a ring-shaped configuration, the thickness of the support member (21) and the thickness of the fixing member (22) are equal, and the height of the support member (21) and the width of the fixing member (22) are equal.
8. An autonomous controlled release device according to claim 7, characterized in that the distance between any two adjacent support members (21) is equal.
9. The self-controlled slow release device according to claim 8, further comprising a filter bottle (22), wherein the filter bottle (22) is arranged on the inner surface of the support frame (2), the filter bottle (22) is detachably provided with an end cover, the filter bottle (22) is provided with a plurality of through holes, and the diameter of each through hole is less than 6.5mm.
10. An autonomous controlled release device according to claim 2, characterized in that the side wall of the cylinder (11) is provided with a vent pipe (112), the vent pipe (112) communicating with the receiving space.
11. An autonomous sustained release device according to claim 1, characterized in that the connecting conduit (3) comprises an outlet conduit (31), a first inlet conduit (32) and a second inlet conduit (33), the outlet conduit (31) being arranged at one end of the housing (1), the second inlet conduit (33) and the first inlet conduit (32) being arranged at the other end of the housing (1), the first inlet conduit (32) being on the same axis as the second inlet conduit (33).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202110791877.7A CN115614002A (en) | 2021-07-13 | 2021-07-13 | Self-controlled slow-release device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110791877.7A CN115614002A (en) | 2021-07-13 | 2021-07-13 | Self-controlled slow-release device |
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| CN115614002A true CN115614002A (en) | 2023-01-17 |
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| CN202110791877.7A Pending CN115614002A (en) | 2021-07-13 | 2021-07-13 | Self-controlled slow-release device |
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