CN201635737U - Vacuum thermal insulation and pressure maintaining type gas well sampler - Google Patents
Vacuum thermal insulation and pressure maintaining type gas well sampler Download PDFInfo
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- CN201635737U CN201635737U CN2010201616732U CN201020161673U CN201635737U CN 201635737 U CN201635737 U CN 201635737U CN 2010201616732 U CN2010201616732 U CN 2010201616732U CN 201020161673 U CN201020161673 U CN 201020161673U CN 201635737 U CN201635737 U CN 201635737U
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Abstract
The utility model relates to a vacuum thermal insulation and pressure maintaining type gas well sampler, belonging to a sample device matched with the natural gas exploration and development process. The sampler comprises a sampling cabin and an electric cabin; samples in a sampling cavity are kept warm by a vacuum thermal insulation cavity in a vacuum combined cylinder structure; the samples are extracted in pressure maintaining by a balance piston; an electromagnet assembly is controlled to open and close with signals sent by an electric control module; underground pressures and temperature data detected by a pressure sensor and a temperature sensor are detected and stored in real time simultaneously; the utility model is suitable for collecting fluid samples with the requirements of thermal insulation and pressure maintaining; and the sampler can maintain the sample temperature and the constant pressure in the sampling process, and can detect and record the temperature and pressure changes in the sampling process in real time.
Description
Technical field
The utility model relates to natural gas exploration and development technology plant and instrument field, particularly is a kind of natural gas Sampler of supporting application with it in the natural gas exploration and development process.
Background technology
Natural gas is a kind of based on the low molecule saturated hydrocarbons of paraffinic, and a small amount of non-hydrocarbon gases is the auxilliary mist that combines.Because its specific geologic setting, forming process cause the diversity of its component.The component of natural gas in different regions, the different reservoir degree of depth is different.Even at same reservoir, different gas wells or also inequality with its component on the different layers position of well.For these gas reservoirs of safe and efficient exploitation, the natural gas sample in the needs extraction Different Strata is to analyze its concrete component and chemical property.In extracting the process of gaseous sample, because the subsurface environment complexity, and its sample is under the high-temperature high-pressure state, if sampler does not possess heat insulation function, is extracted into natural gas sample sets branch behind the ground because of the variation of temperature and pressure difference to some extent.
The domestic sampler that is widely used in each big gas field all is to continue to use the equipment that uses in the oil well sampling at present.Can be divided into according to its working method difference: flow through the empty tube of formula sampler, forward displacement formula sampler, single-phase type sampler and temp. compensation type sampler.Wherein flow through the empty tube of formula sampler, forward displacement formula sampler, single-phase type sampler and do not possess heat insulation function, the temp. compensation type sampler mainly is made up of air chamber, sample room, heater block and various kinds of sensors, controller and register.It adopts active insulation pattern, has insulation sampling, storage characteristics, but there are following two aspect defectives in this sampler: one owing to taking the initiative the insulation pattern, has increased volume, cost and the integrally-built complexity of sampler.Its two because bulky, can only in sleeve pipe, use, and be mainly used in the exploitation in marine deep water hydrocarbon field.
The utility model content
The purpose of this utility model is to overcome the deficiency of above technology, and a kind of gas well sampling and heat-insulation pressure keeping type gas well sampler simple in structure and that have temperature, pressure real time record function of being specifically designed to is provided.
In order to realize above-mentioned functions, the technical scheme that the utility model provides is: offer gas passage on sampler F type adapter, its end face arranges that pressure sensor and temperature pick up detect the pressure and temperature that transmits sample from gas passage, the data wire sintering of pressure sensor and temperature pick up is on a connector, connector is connected with the end face of cable tray, and gives electronic control module and storage by the data wire in the cable tray with the pressure and temp transfer of data.The insulation pattern is a kind of passive insulation pattern, it adopts inside and outside combination barrel structure, it is the thick ultrahigh vacuum gap of 2～4mm that one thickness is arranged between the inner/outer tube, spray heat insulation layer to guarantee gaseous sample temperature constant in the sampling cavity at sampling module urceolus 19 inside and outside walls, sampling module inner core 18 outer walls, take corresponding Sealing Technology to realize the sealing of institute's sample thief, institute's sample thief is temperature-resistant as can be known according to the equation of gas state, and its pressure no change institute sample thief is a packing state during given volume.
The course of work of the present utility model: before the sampling, at first, set sample time, tighten the seal plug at F type adapter place then according to the well depth structure, at F type adapter place vacuum pump is installed sampling module is vacuumized, this moment, dummy piston was locked bolt in sampling module bottom.During sampling, the energising of electromagnet assembly is opened, and gaseous sample enters inlet channel and opens breather check valve by the sieve aperture that the filtering net film parcel is arranged, and sample enters sampling cavity by breather check valve.When sampling module internal pressure and down-hole external pressure balance (being that pressure reduction is not enough to open breather check valve), closed check valve is finished sample collecting and storage.After reaching the predetermined sampling time, the outage of electromagnet assembly is closed, and the armature that has seal head in the electromagnet assembly is closed inlet channel under self elastic force effect, and sampling finishes.During sample extraction, screw off guide shoe, tail end plug and lock bolt successively, and the hydraulic pressure that connects the chemical analysis chamber advances pipeline, at F type adapter extraction sample manifold is installed, unscrew seal plug then, open outlet passageway, utilize dummy piston that sample in the chamber is at the uniform velocity released from the gas outlet under packing state.
The utility model sample extraction adopts F type adapter structure and dummy piston gastight sampling structure.F type adapter structure aims at the extraction gaseous sample and designs, and has the function to the sampling module extracting vacuum concurrently.Pipeline is installed at F type adapter gas passage place, so that the usefulness of extracting vacuum and extraction sample; Seal plug is installed at another gas passage place of F type adapter, by tightening or unscrewing seal plug to realize the unlatching and the sealing of sample cavity.
The utility model and existing sampler compare, and have following distinguishing feature: (1) has realized the real-time detection and the storage of temperature and pressure parameter in the whole sampling process, for the variation of judging mine gas sample temperature and pressure provides reliable basis; (2) it can effectively realize the natural gas sample of being gathered is realized heat insulation function, and utilize excellent sealing performance to realize the pressurize effect of sample, particularly adopt the application of high vacuum combinations of gaps barrel structure and multistage isolation layer to have realized the simplification of sampler structure, solved the thermal-insulating type sampler because of the excessive problem that can not extensive use of volume; (3) it is specially for the gas well sampling designs, by the gas solid separation under the sieve aperture structure realization down-hole adverse circumstances that swathe filtering net film.(4) this sampler structure is simple, reliable operation, and the complete machine cost is lower.The utility model is applicable to have the natural gas sample collecting that insulation requires.
Description of drawings
Fig. 1 is the overall structure sectional view of the utility model sampler.
Among the figure: 1, hoisting device; 2, electric cabin tube; 3, electronic control module (comprising down-hole battery, one-chip computer module and I/O digital interface); 4, electric cabin end socket; 5, inlet air compartment tube; 6, electromagnet assembly; 7, filtering net film; 8, attachment screw; 9, spacing block; 10, exhaust check valve; 11, pressure sensor; 12, temperature pick up; 13, breather check valve; 14, F type adapter; 15, seal plug; 16, snap ring; 17, sampling module end socket; 18, sampling module inner core; 19, sampling module urceolus; 20, locator; 21, vacuum pumping valve; 22, dummy piston; 23, end connector; 24, lock bolt; 25, tail end plug; 26, guide shoe, A, electric chamber; B, inlet chamber; C, spatia; D, vacuum heat-preserving chamber; E, sampling cavity.
Fig. 2 is the utility model F type adapter enlarged diagram.
Fig. 3 is that the utility model sensing station disposed axle is to schematic diagram.
Fig. 4 is the utility model vacuum gap combination barrel structure enlarged diagram.
Fig. 5 is the spacing block structural representation.
The specific embodiment
Further specify the utility model below in conjunction with accompanying drawing.
As shown in Figure 1, the vacuum heat-preserving pressure maintaining type gas well sampler that the utility model is related, comprise sampling module and electric cabin two parts, sampling module is installed in bottom, electric cabin by attachment screw 8, form cabin, gap C between electric cabin and the sampling module, and be connected with pressure sensor 11 and temperature pick up 12 with signal transmssion line.Electric cabin comprises hoisting device 1, electric cabin tube 2, electronic control module 3, electric cabin end socket 4, inlet air compartment tube 5, electromagnet assembly 6, filtering net film 7, attachment screw 8, spacing block 9 and exhaust check valve 10, tube 2 upper ends, electric cabin are by the hoisting device 1 that is threaded, the lower end is connected with inlet air compartment tube 5 by screw, electric cabin end socket 4 is installed in lower step place in the electric cabin tube 2, form electric cabin A by electric cabin end socket 4, electronic control module 3 is installed in the electric cabin A, it is seated on the step in the electric cabin tube 2 and by hoisting device 1 and fixes, spacing block 9 and electromagnet assembly 6 are housed respectively in the inlet air compartment tube 5, form inlet chamber B by spacing block 9 and electromagnet assembly 6, inlet air compartment tube 5 is axially arranged with a wire casing t at it, wire casing t provides cable tray for electronic control module 3, at the some air inlet sieve apertures of radially leaving of inlet air compartment tube 5, its outside scrobicular ring goes out by glued form to be fixed with filtering net film 7, spacing block 9 centers have shoulder hole, axially have installing hole and the cable tray that exhaust check valve 10 is installed at it, spacing block 9 is seated at inlet air compartment tube 5 interior step places and is withstood downwards by electromagnet assembly 6.
Sampling module comprises pressure sensor 11, temperature pick up 12, breather check valve 13, F type adapter 14, seal plug 15, snap ring 16, sampling module end socket 17, sampling module inner core 18, sampling module urceolus 19, locator 20, vacuum pumping valve 21, dummy piston 22, end connector 23, lock bolt 24, tail end plug 25 and guide shoe 26, F type adapter 14 is connected with sampling module end socket 17 by snap ring 16, on the F type adapter 14 breather check valve 13 is installed, in being connected with by Type of Welding, sampling module end socket 17 lower ends are externally connected with the combination barrel structure that sampling module inner core 18 and sampling module urceolus 19 are formed, dummy piston 22 is equipped with in cover 18 inside in sampling module, combination barrel structure tail end is connected with end connector 23, lock bolt 24 passes the stepped hole locking dummy piston of offering end connector 23 bottoms 22, and tail end plug 25 and guide shoe 26 are connected end connector 23 internal and external threads places by helicitic texture respectively.
As Fig. 2, as shown in Figure 3, the F type adapter center drilling that the utility model is involved is also installed breather check valve 13, offer screwed hole setting pressure sensor 11 and temperature pick up 12 at its end face, the data wire sintering of pressure sensor 11 and temperature pick up 12 is on a connector, be connected with electronic control module 3 in the electric cabin by cable tray t, radially have gas passage 14 (i) and 14 (ii) at F type adapter 14.
As shown in Figure 4, having formed a thickness between sampling module inner core 18 and the sampling module urceolus 19 in the involved combination barrel structure of the utility model is the thick gap incubation cavity D of 2～4mm, be connected with locator 20 in sampling module urceolus 19 bottoms by Type of Welding, vacuum pumping valve 21 is housed on the locator 20, sampling module inner core 18 inner dummy piston 22 backs of installing form sampling cavity E, at sampling module urceolus 19 outer walls, sampling module inner core 18 outer walls spray heat insulation layer respectively to guarantee gaseous sample temperature constant in the sampling cavity E.
As shown in Figure 5, involved spacing block 9 centers of the utility model have shoulder hole enters cabin, gap C as gaseous sample inlet channel, axially have installing hole at it, be provided with screw thread in the hole, exhaust check valve 10 is installed in installing hole inside by screw thread, spacing block 9 axially have some apertures, aperture provides cable tray and realizes air seal by sintering technology for the holding wire of pressure sensor 11 and temperature pick up 12.
Concrete operations are as follows:
Go into the well the sampling before, depth selection is set the working time that is installed in the electronic control module 3 in the electric cabin tube 2 according to going into the well, by of unlatching and the shutoff of the data wire transmission numerical signal of sintering on electric cabin end socket 4, then the rope joint is connected with sampler hoisting device 1 with control electromagnet assembly 6.(i) locates to connect the extracting vacuum pipeline at gas passage 14, unscrew simultaneously and be placed in gas passage 14 and (ii) locate seal plug 15, open vacuum pump, bolt 24 is locked because dummy piston 22 is locked, and an atmospheric pressure is not enough to open the vacuum pumping valve 21 that is installed on the locator 20, sampling cavity E constancy of volume, to be in vacuum state in the final sampling cavity E, vacuum state by sampling cavity E can prevent other gaseous contamination sample in the sampling cavity E, tighten the vacuum of seal plug 15 assurance sampling cavity E subsequently, close vacuum pump, unload vacuum pipeline.
In the sampling process of going into the well, transfer sampler until arriving predetermined well depth from well head, the different well depth gases in down-hole all enter inlet chamber B through the air inlet sieve aperture that filtering net film 7 is installed, because electromagnet assembly 6 is in closed condition, the armature that has seal head on the electromagnet assembly makes inlet channel on the spacing block 9 by shutoff, gas fails to enter spatia C by spacing block 9, and breather check valve 13 all is in closed condition with exhaust check valve 10.After arriving predetermined well depth, electronic control module 3 is sent the control start signal and is picked up counting, energising is opened after electromagnet assembly 6 logical these switching signals of acquisition, pulling armature makes the inlet channel conducting on the spacing block 9, sample gas enters spatia C, the simultaneously inner one-chip computer module that is equipped with triggers after recognizing the data signal that electromagnet assembly 6 opens immediately, opens temperature, pressure real-time detecting system and record storage pressure sensor 11, temperature pick up 12 detected measured data.Because spatia C internal pressure increases, after surpassing the opening pressure of breather check valve 13, breather check valve 13 conductings, gaseous sample is flowed through F type adapter 14 and sampling module end socket 17 and is entered sampling cavity E.The gases at high pressure sample is full of the trend that the gap of 14 of sampling module end socket 17 and F type adapters is separated from each other its generation, connects to prevent that sampling module end socket 17 from separating with F type adapter by snap ring 16.Along with the carrying out of sampling, the pressure reduction between sampling cavity E and the spatia C reduces gradually after its pressure reduction is not enough to open breather check valve 13, and breather check valve 13 is closed, and the inlet channel that gaseous sample enters sampling cavity E is closed.Spatia C and sampling cavity E be UNICOM no longer, after electronic control module 3 timing reach setting value, electronic control module 3 is sent the control shutdown signal closes 6 outages of electromagnet assembly, and the armature seal head seals the inlet channel on the spacing block 9 in the effect of pre-compressed spring 5, and spatia C and inlet chamber B be UNICOM no longer.Sampling is carried sampler on finishing, along with pressure reduces, after the opening pressure of pressure reduction between spatia C and the inlet chamber B greater than exhaust check valve 10, exhaust check valve 10 is opened conducting discharges the residual gas that remains in the spatia C, in the last process of carrying sampler, by vacuum heat-preserving chamber D and spread upon the heat insulation function that insulation layer on sampling module inner core 18, the sampling module urceolus 19 is realized sample.
Claims (6)
1. vacuum heat-preserving pressure maintaining type gas well sampler, comprise sampling module and electric cabin two parts, it is characterized in that: sampling module is installed in bottom, electric cabin by attachment screw (8), also be connected with between electric cabin and the sampling module pressure sensor (11) and temperature pick up (12) with signal transmssion line.
2. sampler according to claim 1, it is characterized in that: described electric cabin comprises hoisting device (1), electric cabin tube (2), electronic control module (3), electric cabin end socket (4), inlet air compartment tube (5), electromagnet assembly (6), filtering net film (7), attachment screw (8), spacing block (9) and exhaust check valve (10), electric cabin tube (2) upper end is by the hoisting device that is threaded (1), the lower end is connected with inlet air compartment tube (5) by screw, electronic control module (3) is seated on the interior step of electric cabin tube (2) and by hoisting device (1) and fixes, electric cabin end socket (4) is installed in the interior lower step of electric cabin tube (2) place, spacing block (9) and electromagnet assembly (6) are housed respectively in the inlet air compartment tube (5), its outside scrobicular ring goes out by glued form to be fixed with filtering net film (7), offer relevant duct on the spacing block (9) exhaust check valve (10) is installed, it is seated at inlet air compartment tube (5) interior step place and is withstood downwards by electromagnet assembly (6).
3. sampler according to claim 1, it is characterized in that: described sampling module comprises pressure sensor (11), temperature pick up (12), breather check valve (13), F type adapter (14), seal plug (15), snap ring (16), sampling module end socket (17), sampling module inner core (18), sampling module urceolus (19), locator (20), vacuum pumping valve (21), dummy piston (22), end connector (23), lock bolt (24), tail end plug (25) and guide shoe (26), F type adapter (14) is connected with sampling module end socket (17) by snap ring (16), breather check valve (13) is installed on the F type adapter (14), in being connected with by Type of Welding, sampling module end socket (17) lower end is externally connected with the combination barrel structure that sampling module inner core (18) and sampling module urceolus (19) are formed, dummy piston (22) is equipped with in cover (18) inside in sampling module, combination barrel structure tail end is connected with end connector (23), lock bolt (24) passes the stepped hole locking dummy piston of offering end connector (23) bottom (22), and tail end plug (25) and guide shoe (26) are connected end connector (23) internal and external threads place by helicitic texture respectively.
4. sampler according to claim 2 is characterized in that: described spacing block (9) center has shoulder hole, axially has installing hole and the cable tray that exhaust check valve (10) is installed at it.
5. sampler according to claim 3, it is characterized in that: having formed a thickness in the described combination barrel structure between sampling module inner core (18) and the sampling module urceolus (19) is the thick gap incubation cavity of 2～4mm, be connected with locator (20) in sampling module urceolus (19) bottom by Type of Welding, vacuum pumping valve (21) is housed on the locator (20), at sampling module urceolus (19) outer wall, sampling module inner core (18) outer wall sprays heat insulation layer respectively.
6. sampler according to claim 3, it is characterized in that: described F type adapter center drilling is also installed breather check valve (13), offer screwed hole setting pressure sensor (11) and temperature pick up (12) at its end face, radially have gas passage (14 (i) and 14 (ii)) at it.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201616732U CN201635737U (en) | 2010-04-17 | 2010-04-17 | Vacuum thermal insulation and pressure maintaining type gas well sampler |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201616732U CN201635737U (en) | 2010-04-17 | 2010-04-17 | Vacuum thermal insulation and pressure maintaining type gas well sampler |
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| CN201635737U true CN201635737U (en) | 2010-11-17 |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103437762A (en) * | 2013-09-09 | 2013-12-11 | 中国科学院武汉岩土力学研究所 | Layered gas-liquid fluid sampling device in shallow well |
| CN104036307A (en) * | 2014-06-18 | 2014-09-10 | 中国环境科学研究院 | Landscape pattern dimension recognition system based on response of zoobenthos community structure |
| CN104405320A (en) * | 2014-12-18 | 2015-03-11 | 四川川庆石油钻采科技有限公司 | Gas storing and core taking tool |
| CN104008467B (en) * | 2014-06-18 | 2017-01-18 | 中国环境科学研究院 | Landscape pattern threshold value recognition system based on benthonic animal community structure response |
| CN109025986A (en) * | 2018-08-15 | 2018-12-18 | 中国石油天然气股份有限公司 | Fluid sampling device and method |
| CN109458177A (en) * | 2019-01-17 | 2019-03-12 | 西南石油大学 | A kind of umbrella motor-driven downhole intelligent sampler |
| CN109538202A (en) * | 2019-01-17 | 2019-03-29 | 西南石油大学 | A kind of intelligence umbrella rocker slider supporting leg suction-type sampling device |
| CN110761785A (en) * | 2019-11-26 | 2020-02-07 | 四川大学 | Pressure maintaining cabin structure with glass window |
| CN111855308A (en) * | 2020-07-14 | 2020-10-30 | 上海交通大学 | Compressed active pressure-maintaining in-situ seawater sampler for empty cabin and sampling method thereof |
| CN113090259A (en) * | 2021-04-13 | 2021-07-09 | 西安交通大学 | Negative pressure system suitable for underground volatile gas collection |
| CN113969783A (en) * | 2020-07-23 | 2022-01-25 | 中国石油天然气股份有限公司 | Underground fluid stratified sampling system and stratified sampling method |
| CN114046146A (en) * | 2021-11-12 | 2022-02-15 | 黄锡涛 | Intelligent high-definition exploration system and exploration method for oil well |
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- 2010-04-17 CN CN2010201616732U patent/CN201635737U/en not_active Expired - Fee Related
Cited By (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103437762B (en) * | 2013-09-09 | 2016-08-10 | 中国科学院武汉岩土力学研究所 | Layering gas-liquid fluid sampler in a kind of shallow-layer well |
| CN103437762A (en) * | 2013-09-09 | 2013-12-11 | 中国科学院武汉岩土力学研究所 | Layered gas-liquid fluid sampling device in shallow well |
| CN104036307A (en) * | 2014-06-18 | 2014-09-10 | 中国环境科学研究院 | Landscape pattern dimension recognition system based on response of zoobenthos community structure |
| CN104036307B (en) * | 2014-06-18 | 2016-09-07 | 中国环境科学研究院 | A kind of landscape pattern based on benthic fauna structural response target scale recognition system |
| CN104008467B (en) * | 2014-06-18 | 2017-01-18 | 中国环境科学研究院 | Landscape pattern threshold value recognition system based on benthonic animal community structure response |
| CN104405320A (en) * | 2014-12-18 | 2015-03-11 | 四川川庆石油钻采科技有限公司 | Gas storing and core taking tool |
| CN104405320B (en) * | 2014-12-18 | 2017-01-25 | 四川川庆石油钻采科技有限公司 | Gas storing and core taking tool |
| CN109025986B (en) * | 2018-08-15 | 2021-09-28 | 中国石油天然气股份有限公司 | Device and method for sampling underground fluid |
| CN109025986A (en) * | 2018-08-15 | 2018-12-18 | 中国石油天然气股份有限公司 | Fluid sampling device and method |
| CN109538202B (en) * | 2019-01-17 | 2022-02-01 | 西南石油大学 | Umbrella-shaped landing leg suction formula sampler of intelligence |
| CN109458177B (en) * | 2019-01-17 | 2022-02-01 | 西南石油大学 | Umbrella-shaped motor-driven underground intelligent sampler |
| CN109458177A (en) * | 2019-01-17 | 2019-03-12 | 西南石油大学 | A kind of umbrella motor-driven downhole intelligent sampler |
| CN109538202A (en) * | 2019-01-17 | 2019-03-29 | 西南石油大学 | A kind of intelligence umbrella rocker slider supporting leg suction-type sampling device |
| CN110761785A (en) * | 2019-11-26 | 2020-02-07 | 四川大学 | Pressure maintaining cabin structure with glass window |
| CN110761785B (en) * | 2019-11-26 | 2024-01-23 | 四川大学 | Pressure maintaining cabin structure with glass window |
| CN111855308A (en) * | 2020-07-14 | 2020-10-30 | 上海交通大学 | Compressed active pressure-maintaining in-situ seawater sampler for empty cabin and sampling method thereof |
| CN111855308B (en) * | 2020-07-14 | 2023-10-20 | 上海交通大学 | Air cabin compression type active pressure-maintaining in-situ seawater sampler and sampling method thereof |
| CN113969783A (en) * | 2020-07-23 | 2022-01-25 | 中国石油天然气股份有限公司 | Underground fluid stratified sampling system and stratified sampling method |
| CN113969783B (en) * | 2020-07-23 | 2024-03-26 | 中国石油天然气股份有限公司 | Downhole fluid stratified sampling system and stratified sampling method |
| CN113090259A (en) * | 2021-04-13 | 2021-07-09 | 西安交通大学 | Negative pressure system suitable for underground volatile gas collection |
| CN113090259B (en) * | 2021-04-13 | 2024-03-26 | 西安交通大学 | Negative pressure system suitable for underground volatile gas collection |
| CN114046146A (en) * | 2021-11-12 | 2022-02-15 | 黄锡涛 | Intelligent high-definition exploration system and exploration method for oil well |
| CN114046146B (en) * | 2021-11-12 | 2024-04-30 | 上海浩铂海洋工程有限公司 | Intelligent high-definition exploration system and exploration method for oil well |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101117 Termination date: 20130417 |