CN204252911U - Sealing device for injection and production port of microcosmic displacement model - Google Patents
Sealing device for injection and production port of microcosmic displacement model Download PDFInfo
- Publication number
- CN204252911U CN204252911U CN201420652058.XU CN201420652058U CN204252911U CN 204252911 U CN204252911 U CN 204252911U CN 201420652058 U CN201420652058 U CN 201420652058U CN 204252911 U CN204252911 U CN 204252911U
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- main shaft
- seal head
- socket type
- end cap
- urceolus
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- 238000007789 sealing Methods 0.000 title claims abstract description 51
- 238000006073 displacement reaction Methods 0.000 title claims abstract description 33
- 238000002347 injection Methods 0.000 title claims abstract description 15
- 239000007924 injection Substances 0.000 title claims abstract description 15
- 238000004519 manufacturing process Methods 0.000 title abstract description 3
- 239000012530 fluid Substances 0.000 claims abstract description 31
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 8
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 8
- -1 polytetrafluoroethylene Polymers 0.000 claims description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 239000007788 liquid Substances 0.000 abstract description 9
- 230000007797 corrosion Effects 0.000 abstract description 6
- 238000005260 corrosion Methods 0.000 abstract description 6
- 238000005299 abrasion Methods 0.000 abstract description 4
- 239000011521 glass Substances 0.000 description 20
- 238000005530 etching Methods 0.000 description 11
- 238000002474 experimental method Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 5
- 238000011084 recovery Methods 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000000605 extraction Methods 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 230000035882 stress Effects 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001802 infusion Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
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- Details Of Reciprocating Pumps (AREA)
Abstract
The utility model relates to a sealing device of a microcosmic displacement model injection and production port, which comprises a main shaft, wherein a liquid channel is arranged inside the main shaft and is connected with a fluid injection pipeline; the first end of the main shaft is a cylinder with a smaller diameter, the first end is in threaded connection with a sealing head which can generate radial deformation after being subjected to axial pressure, the second end of the main shaft is a cylinder with a larger diameter, and a shoulder part is formed on the main shaft; an outer cylinder is sleeved outside the cylinder with the smaller diameter of the main shaft, a first end of the outer cylinder abuts against the sealing head, and a certain distance is reserved between a second end of the outer cylinder and the shoulder part of the main shaft; the sleeve-type end cap is sleeved at the second end of the outer cylinder and the outer part of the second end of the main shaft, and an annular closed space is formed among the inner wall of the sleeve-type end cap, the second end of the outer cylinder and the shoulder part; the side wall of the sleeve-type end cap is provided with a through hole and is connected with the micro hydraulic pump through a pipeline. The utility model has the advantages of man-made adjustment of the sealing strength and reliable sealing performance; and the corrosion resistance and the abrasion resistance are strong, and the sealing element does not need to be replaced regularly.
Description
Technical field
The utility model relates to the microcosmic displacement technology in a kind of reservoir fluid Seepage Experiment, particularly relates to the sealing device that a kind of microcosmic displacement model note adopts mouth.
Background technology
Improve in the technical research of oil recovery at oil-gas field development, no matter adopt which kind of method, all relate to displacing medium and by displacing medium, namely after certain displacing medium of injection, evaluated by the rate of oil and gas recovery and inject the method for this kind of medium or the feasibility of technology.And the rate of oil and gas recovery will be obtained normally tested by microcosmic displacement model, a kind of conventional microcosmic displacement model is microscopic glass etching model, utilize microscopic glass to etch quality that model comparatively can evaluate to quicklook injected media performance.Microscopic glass etching model is that two glass plate sintering of the same size form, and one of them glass plate inner surface is carved with duct.This model there are an inlet and an extraction mouth are called for short note and adopt mouth.The note sealing problem adopted between mouth and metal pipe line annoyings petroleum science and technology worker always.The sealing means of usual employing is, metal pipe line is adopted between mouth by the note of O type circle and glass model and sealed, and sealing mode exists following drawback: one is that to run into injected media be similar CO
2etc. when there is gas or the liquid of corrosion property, in the application life of serious curtailment O type circle, seepage may be there is in an experiment on the way, cannot predict in advance; Two is that O type circle and glass surface easily change position under the effect of the pressure and cause seepage; Three is under the effect of the pressure, does not always ideally stick together between O type circle and glass surface, if temperature is too high or pressure change is very fast, or extraneous confined pressure changes greatly, and these factors all easily cause leaking.
Thus, the present inventor relies on experience and the practice of being engaged in relevant industries for many years, proposes the sealing device that a kind of microcosmic displacement model note adopts mouth, to overcome the defect of prior art.
Utility model content
The purpose of this utility model is to provide a kind of microcosmic displacement model to note the sealing device adopting mouth, and sealing intensity can artificially adjust, and sealing performance is reliable.
Another object of the present utility model is to provide a kind of microcosmic displacement model to note the sealing device adopting mouth, and resistance to corrosion, abrasion resistance are comparatively strong, does not need to safeguard, without the need to regularly replacing seal in experimentation.
The purpose of this utility model realizes like this, a kind of microcosmic displacement model note adopts the sealing device of mouth, it is characterized in that: described sealing device comprises a main shaft, described main shaft is made up of the cylinder of two sections of different-diameters, main shaft inside is provided with fluid passage, and this fluid passage and fluid are injected pipeline and be connected; The first end of described main shaft is smaller diameter end cylinder, described first end be subject to axial compression after can produce radial deformation seal head be threaded, described seal head is set in the first end of main shaft; Second end of main shaft is larger diameter end cylinder, thus main shaft is formed with shoulders; Be arranged with urceolus at main shaft smaller diameter end cylindrical outer, the first end of described urceolus is resisted against on seal head, has certain distance between the second end of urceolus and the shoulders of main shaft; One socket type end cap is set in the second end of urceolus and the second end outside of main shaft, between second end and shoulders of socket type end cap inwall, urceolus, form an annular sealed space; The sidewall of socket type end cap is provided with the open-work be communicated with described annular sealed space; Described open-work is connected with a miniature hydraulic pump by pipeline.
In a better embodiment of the present utility model, seal head is that one end is closed, the cylindrical sleeve member of one end open; The blind end of seal head is provided with the passing hole corresponding with the fluid passage in main shaft; The outer wall of seal head is provided with circumferential groove, is provided with flexible sealing grip assembly in described circumferential groove; The inwall of seal head is provided with internal thread and is connected with the external screw thread that main shaft first end is arranged, and the openend of seal head is set in the first end of main shaft; Be provided with multiple equally distributed disconnection groove at the circumferencial direction of seal head sidewall, described disconnection groove extends to vertically near circumferential groove from the openend of seal head, along the circumferential direction the sidewall of seal head is broken as multiple part.
In a better embodiment of the present utility model, the first end of urceolus is resisted against the openend of seal head, is equipped with O RunddichtringO between the second end of urceolus and main shaft, between the second end of urceolus and socket type end cap.
In a better embodiment of the present utility model, socket type end cap is that one end is closed, the socket type parts of one end open; The blind end of socket type end cap is provided with the duct passed for main shaft and urceolus, and the openend of socket type end cap is set in the second end outside of main shaft and seals with O RunddichtringO.
In a better embodiment of the present utility model, socket type end cap is relative with between main shaft to be fixedly installed; The outer drum outer wall of corresponding socket type end cap blind end is provided with one section of external screw thread, and is threaded and is arranged with anti-reduction nut.
In a better embodiment of the present utility model, the junction of fluid passage on fluid injection conduit line and main shaft, and on the pipeline that connects of miniature hydraulic pump and socket type end cap, the junction of open-work all adopts pipeline sealed screw to be connected and sealed.
In a better embodiment of the present utility model, seal head adopts metallic copper to make.
In a better embodiment of the present utility model, flexible sealing grip assembly is the Seal Kit adopting polytetrafluoroethylene (PTFE) to make.
From the above mentioned, the utility model sealing intensity in displacement test process can artificially adjust, and sealing performance is reliable; And resistance to corrosion, abrasion resistance are comparatively strong, carry out CO
2etc. when there is corrosivity injection fluid experiment, without the need to regularly replacing seal, keep connectedness and the sustainability of displacement test.The utility model also can be used in piston container or PVT equipment (referring to measure the instrument of fluid pressure-Volume-Temperature variation relation), be applicable to a series of displacement physics experimental models such as glass displacement model, cementing displacement model, without the need to changing seal member in 5-10, provide reliable experimental technique means for improving recovery mechanism research.
Accompanying drawing explanation
The following drawings is only intended to schematically illustrate the utility model and explain, does not limit scope of the present utility model.Wherein:
Fig. 1: be the structural representation of the utility model sealing device.
Fig. 2: be the lateral view of seal head in the utility model.
Fig. 3: be the front view of seal head in the utility model.
Fig. 4: for the utility model is used in the connection diagram in microscopic glass etching model.
Detailed description of the invention
In order to there be understanding clearly to technical characteristic of the present utility model, object and effect, now contrast accompanying drawing and detailed description of the invention of the present utility model is described.
As shown in Figure 1, the utility model provides a kind of microcosmic displacement model to note the sealing device 10 adopting mouth, the microscopic glass that has relatively more conventional in microcosmic displacement model etches model, that adopt in present embodiment is exactly microscopic glass etching model a, and the note that the utility model also goes for the cementing displacement model of one dimension/two-dimensional/three-dimensional adopts mouth sealing.Sealing device 10 comprises a main shaft 1, and main shaft 1 is made up of the cylinder of two sections of different-diameters, and main shaft 1 inside is provided with fluid passage 11, and this fluid passage 11 is connected with fluid injection conduit line 12, for injecting fluid in microscopic glass etching model a.Only represent this fluid passage 11 with the form of lines in Fig. 1, the fluid passage 11 during enforcement in main shaft 1 can be any form, and the connector of itself and fluid injection conduit line 12 also can be located at any position on main shaft 1.The first end 13 of main shaft 1 is smaller diameter end cylinder, main shaft first end 13 be subject to axial compression after can produce radial deformation seal head 2 be threaded, seal head 2 adopts the material manufacture with elastic deformability, and present embodiment adopts metallic copper to make seal head 2.Seal head 2 is set in the end of main shaft first end 13; Second end 14 of main shaft 1 is larger diameter end cylinder, thus main shaft 1 is formed with shoulders 15; Be provided with urceolus 3 in the cylindrical outer cover of main shaft 1 smaller diameter end, the first end 31 of urceolus 3 is resisted against on seal head 2, has certain distance between the second end 32 of urceolus 3 and the shoulders 15 of main shaft 1; Socket type end cap 4 is set in the second end 32 of urceolus 3 and the second end 14 outside of main shaft 1, thus forms an annular sealed space 5 between second end 32 and shoulders 15 of socket type end cap 4 inwall, urceolus 3.The sidewall of socket type end cap 4 is provided with the open-work 41 be communicated with annular sealed space 5; Open-work 41 is connected with a miniature hydraulic pump 6 by pipeline 42.
As shown in Figure 1 and Figure 4, the note that sealing device 10 is inserted in microscopic glass etching model a adopts a mouthful b place, in annular sealed space 5, inject liquid by miniature hydraulic pump 6 to make to produce pressure in annular sealed space 5, pressure acts on the second end 32 of urceolus 3, and be delivered on seal head 2 by the first end 31 being resisted against the urceolus 3 on seal head 2, seal head 2 is made to be subject to the pressure of an axis, thus seal head 2 can produce radial deformation, namely seal head 2 is to radial direction expansion, thus makes seal head 2 and note adopt mouthful contact at b place to increase and produce sealing effectiveness.Miniature hydraulic pump 6 can be controlled and in annular sealed space 5, inject the pressure of liquid to regulate the intensity of sealing, produce reliable sealing effectiveness.
Further, as shown in Figures 2 and 3, seal head 2 for one end close, the cylindrical sleeve member of one end open; The blind end 21 of seal head 2 is provided with the passing hole 22 corresponding with the fluid passage 11 in main shaft 1; The outer wall of seal head 2 is provided with circumferential groove, is provided with flexible sealing grip assembly 23 in circumferential groove; Flexible sealing grip assembly 23 is the Seal Kit adopting polytetrafluoroethylene (PTFE) to make, and polytetrafluoroethylene (PTFE) has good corrosion-resistant and ageing-resistant ability, significantly can increase the application life of seal head, carry out CO
2etc. when there is corrosivity injection fluid experiment, without the need to regularly replacing seal, keep connectedness and the sustainability of displacement test.The inwall of seal head 2 is provided with internal thread and is connected with the external screw thread that main shaft first end 13 is arranged, and the openend 25 of seal head 2 is set in the end of main shaft first end 13.Multiple equally distributed disconnection groove 24 is provided with at the circumferencial direction of seal head 2 sidewall, disconnect groove 24 axially extending near circumferential groove along seal head 2 from the openend 25 of seal head 2, thus along the circumferential direction the sidewall of seal head 2 is broken as multiple part.Disconnect groove 24 and extend to circumferential groove top 2mm vertically from the openend 25 of seal head, account for seal head total length 75% is advisable.The first end 31 of urceolus 3 is resisted against the openend 25 of seal head 2, after openend 25 is subject to axial pressure, will produce outside dilatancy in radial direction, and the sidewall of openend 25 being broken as multiple part, is to improve the ability producing dilatancy.Disconnect groove 24 and should be at least 4, along the circumferential direction the sidewall of seal head is broken as at least 4 parts, if disconnect groove 24 to be less than 4, the dilatancy ability of seal head 2 is bad, adopts 6 to disconnect groove 24 in present embodiment.
Further, as shown in Figure 1, socket type end cap 4 for one end close, the socket type parts of one end open; The blind end 43 of socket type end cap 4 is provided with the duct passed for main shaft 1 and urceolus 3, and the openend 44 of socket type end cap 4 is set in the second end 14 outside of main shaft.O RunddichtringO 9 is all adopted to seal between second end 32 of urceolus 3 and main shaft 1, between the second end 32 of urceolus 3 and socket type end cap 4 and between the openend 44 of socket type end cap 4 and the second end 14 of main shaft.
Further, relatively between socket type end cap 4 with main shaft 1 to be fixedly installed; Urceolus 3 outer wall of corresponding socket type end cap 4 blind end 43 is provided with one section of external screw thread 33, external screw thread 33 is threaded and is arranged with anti-reduction nut 8.When by anti-reduction nut 8 rotation direction socket type end cap 4 and against when being locked on blind end 43, because socket type end cap 4 is relative with main shaft 1 fixing, socket type end cap 4 can not move because of stressed, and the pressure that anti-reduction nut 8 can prevent urceolus 3 to be applied on seal head 2 reduces; At this moment, even if the pressure that miniature hydraulic pump 6 injects liquid in annular sealed space 5 reduces also can not affect the sealing performance of seal head.
Further, the junction of fluid injection conduit line 12 and fluid passage 11 on main shaft 1, and the pipeline 42 that miniature hydraulic pump 6 connects all adopts pipeline sealed screw 7 to be connected and sealed with the junction of open-work 41 on socket type end cap.
Encapsulating method of the present utility model is used to comprise the steps:
S1, the inlet b described sealing device 10 being inserted microscopic glass etching model a or extraction mouth b position, make the flexible sealing grip assembly 23 on seal head 2 and inlet or extraction mouth close contact;
S2, startup miniature hydraulic pump 6, with the injection rate of 0.1ml per minute to injection liquid force feed in annular sealed space 5, when pressure rises to 0.1MPa in annular sealed space 5, change constant voltage mode into, make pressure in annular sealed space remain on 0.1MPa; In this step, if (confined pressure refers to each stress state to equipressure to be applied with confined pressure in the outside of microscopic glass etching model a, namely three main stress bares acted on any point are equal, lithostatic pressure or geostationary pressure is claimed) in the earth's crust, need the size controlling confined pressure, make outside confined pressure be greater than pressure in annular sealed space 5 all the time, and pressure differential between the two remain 2MPa.
S3, by blind end 43 side of anti-reduction nut 8 rotation direction socket type end cap 4, until anti-reduction nut 8 is resisted against the blind end 43 of socket type end cap and screws; Now, even if the pressure that miniature hydraulic pump 6 injects liquid in annular sealed space 5 reduces also can not affect the sealing performance of seal head.
S4, utilize liquid infusion pump, inject liquid by the fluid passage 11 of fluid injection conduit line 12, main shaft to microscopic glass etching model a inside, build the pressure;
Whether S5, after the fluid pressure injected in microscopic glass etching model a reaches object of experiment pressure, stablely to build the pressure 30 minutes, observing the sealed end that sealing device 10 and note adopt mouthful b has seepage; If there is seepage, with miniature hydraulic pump 6 with the pressure in 0.1MPa barometric gradient increase annular sealed space 5, till there is no seepage, then repeat step S3.In step S5, if be applied with confined pressure in the outside of microscopic glass etching model a, need the size controlling confined pressure, make outside confined pressure be greater than pressure in annular sealed space 5 all the time, and pressure differential between the two remains 2MPa.
As can be seen from above content, the utility model sealing intensity in displacement test process can artificially adjust, and sealing performance is reliable; And resistance to corrosion, abrasion resistance are comparatively strong, carry out CO
2etc. when there is corrosivity injection fluid experiment, without the need to regularly replacing seal, keep connectedness and the sustainability of displacement test.The utility model also can be used in piston container or PVT equipment, be applicable to a series of displacement physics experimental models such as glass displacement model, cementing displacement model, without the need to changing seal member in 5-10, provide reliable experimental technique means for improving recovery mechanism research.
The foregoing is only the schematic detailed description of the invention of the utility model, and be not used to limit scope of the present utility model.Any those skilled in the art, equivalent variations done under the prerequisite not departing from design of the present utility model and principle and amendment, all should belong to the scope of the utility model protection.
Claims (8)
1. microcosmic displacement model note adopts a sealing device for mouth, and it is characterized in that: described sealing device comprises a main shaft, described main shaft is made up of the cylinder of two sections of different-diameters, and main shaft inside is provided with fluid passage, and this fluid passage and fluid are injected pipeline and be connected; The first end of described main shaft is smaller diameter end cylinder, described first end be subject to axial compression after can produce radial deformation seal head be threaded, described seal head is set in the first end of main shaft; Second end of main shaft is larger diameter end cylinder, thus main shaft is formed with shoulders; Be arranged with urceolus at main shaft smaller diameter end cylindrical outer, the first end of described urceolus is resisted against on seal head, has certain distance between the second end of urceolus and the shoulders of main shaft; One socket type end cap is set in the second end of urceolus and the second end outside of main shaft, between second end and shoulders of socket type end cap inwall, urceolus, form an annular sealed space; The sidewall of socket type end cap is provided with the open-work be communicated with described annular sealed space; Described open-work is connected with a miniature hydraulic pump by pipeline.
2. microcosmic displacement model note as claimed in claim 1 adopts the sealing device of mouth, it is characterized in that: described seal head is that one end is closed, the cylindrical sleeve member of one end open; The blind end of seal head is provided with the passing hole corresponding with the fluid passage in main shaft; The outer wall of seal head is provided with circumferential groove, is provided with flexible sealing grip assembly in described circumferential groove; The inwall of seal head is provided with internal thread and is connected with the external screw thread that main shaft first end is arranged, and the openend of seal head is set in the first end of main shaft; Be provided with multiple equally distributed disconnection groove at the circumferencial direction of seal head sidewall, described disconnection groove extends to vertically near circumferential groove from the openend of seal head, along the circumferential direction the sidewall of seal head is broken as multiple part.
3. microcosmic displacement model note as claimed in claim 2 adopts the sealing device of mouth, it is characterized in that: the first end of described urceolus is resisted against the openend of seal head, between the second end of urceolus and main shaft, between the second end of urceolus and socket type end cap, be equipped with O RunddichtringO.
4. the microcosmic displacement model note as described in claim 1 or 3 adopts the sealing device of mouth, it is characterized in that: described socket type end cap is that one end is closed, the socket type parts of one end open; The blind end of socket type end cap is provided with the duct passed for main shaft and urceolus, and the openend of socket type end cap is set in the second end outside of main shaft and seals with O RunddichtringO.
5. microcosmic displacement model note as claimed in claim 4 adopts the sealing device of mouth, it is characterized in that: described socket type end cap is relative with between main shaft to be fixedly installed; The outer drum outer wall of corresponding socket type end cap blind end is provided with one section of external screw thread, and is threaded and is arranged with anti-reduction nut.
6. microcosmic displacement model note as claimed in claim 5 adopts the sealing device of mouth, it is characterized in that: the junction of fluid passage on fluid injection conduit line and main shaft, and on the pipeline that connects of miniature hydraulic pump and socket type end cap, the junction of open-work all adopts pipeline sealed screw to be connected and sealed.
7. microcosmic displacement model note as claimed in claim 1 or 2 adopts the sealing device of mouth, it is characterized in that: described seal head adopts metallic copper to make.
8. microcosmic displacement model note as claimed in claim 2 adopts the sealing device of mouth, it is characterized in that: described flexible sealing grip assembly is the Seal Kit adopting polytetrafluoroethylene (PTFE) to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420652058.XU CN204252911U (en) | 2014-11-04 | 2014-11-04 | Sealing device for injection and production port of microcosmic displacement model |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420652058.XU CN204252911U (en) | 2014-11-04 | 2014-11-04 | Sealing device for injection and production port of microcosmic displacement model |
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| Publication Number | Publication Date |
|---|---|
| CN204252911U true CN204252911U (en) | 2015-04-08 |
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ID=52957231
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420652058.XU Active CN204252911U (en) | 2014-11-04 | 2014-11-04 | Sealing device for injection and production port of microcosmic displacement model |
Country Status (1)
| Country | Link |
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| CN (1) | CN204252911U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104373072B (en) * | 2014-11-04 | 2017-01-25 | 中国石油天然气股份有限公司 | Sealing device and sealing method for injection and production port of microcosmic displacement model |
-
2014
- 2014-11-04 CN CN201420652058.XU patent/CN204252911U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104373072B (en) * | 2014-11-04 | 2017-01-25 | 中国石油天然气股份有限公司 | Sealing device and sealing method for injection and production port of microcosmic displacement model |
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| C14 | Grant of patent or utility model | ||
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