CN104989959A - Intelligent electric heating oil and gas gathering system - Google Patents
Intelligent electric heating oil and gas gathering system Download PDFInfo
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- CN104989959A CN104989959A CN201510333218.3A CN201510333218A CN104989959A CN 104989959 A CN104989959 A CN 104989959A CN 201510333218 A CN201510333218 A CN 201510333218A CN 104989959 A CN104989959 A CN 104989959A
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Abstract
The embodiment of the invention discloses an intelligent electric heating oil and gas gathering system. The intelligent electric heating oil and gas gathering system comprises a heat preservation pipe, an electric heating belt, a laser transmitter, a regulation and control device and a man-machine interaction platform; and optical fibers and a heating core wire which are stranded are arranged in the electric heating belt, the laser transmitter is used for transmitting incidence lasers to the interiors of the optical fibers, and the regulation and control device is used for obtaining scattering laser signals of the optical fibers. On the basis of the distribution type optical fiber temperature measurement principle, temperature information and position information which are matched with the scattering laser signals are obtained through calculation according to the scattering laser signals and laser signals, and the temperature information and the position information are transmitted to the man-machine interaction platform to be displayed; a user can judge whether the electric heating oil and gas gathering system has faults or not through the temperature information; and when the electric heating oil and gas gathering system has the faults, the position of a pipe which has the fault is positioned through the position information, and therefore the aim of treating the fault in time is achieved.
Description
Technical field
The present invention relates to equipment leak control and check technical field, more particularly, relate to a kind of Intelligent electric-heating oil-collecting gas gathering system.
Background technique
Export for crude oil, when its temperature is lower than condensation point, crude oil output resistance increases, and must complete conveying by external heat source.Be directed to this Intelligent electric-heating oil-collecting gas gathering system to arise at the historic moment.
This system is generally made up of primarily of heat preservation pipe prefabricated and ribbon heater, regulating controller and system software platform three part Intelligent electric-heating oil-collecting gas gathering system.
But, because weather conditions (as earthquake) or personal factor (as soil construction or pilferage) can cause pipeline portions to occur fracture, and then occur leaking oil condition, as can not Timeliness coverage solving after fault occurs, may failure propagation be caused, thus bring serious economic loss.
Summary of the invention
The object of the present invention is to provide a kind of Intelligent electric-heating oil-collecting gas gathering system, the position of breaking down with Timeliness coverage Intelligent electric-heating oil-collecting gas gathering system.
For achieving the above object, following technological scheme is embodiments provided:
A kind of Intelligent electric-heating oil-collecting gas gathering system, comprising:
Thermal insulation pipe, ribbon heater, generating laser, regulating controller and man-machine interactive platform;
Described ribbon heater is interted in the heat radiation threading groove of described thermal insulation pipe;
Mutually stranded optical fiber and heating heart yearn is provided with in described ribbon heater;
Described generating laser is connected with described optical fiber, for described optical fiber Output of laser signal;
The temperature acquisition end of described regulating controller is connected with described optical fiber, for obtaining described optical fiber scattering, contrary with the laser singal direction that described generating laser exports scattering laser signal backward, adopt distributed optical fiber temperature measurement principle to calculate the temperature information and position information that match with described scattering laser signal according to described scattering laser signal and laser singal, described temperature information and position information are sent to man-machine interactive platform;
Described man-machine interactive platform is used for marking the pipeline map preset according to described temperature information and position information.
Preferably, in described Intelligent electric-heating oil-collecting gas gathering system, described thermal insulation pipe, comprising:
Seamless pipeline;
Be fitted in the heat radiation threading groove on described seamless pipeline;
For be arranged on described seamless pipeline, for the fixing pin of fixing described heat radiation threading groove;
Be coated on the thermal insulation layer around described seamless pipeline and described heat radiation threading groove.
Preferably, in described Intelligent electric-heating oil-collecting gas gathering system, described heat radiation threading groove is the aluminum alloy material of half camber structure, and concave surface and the described seamless pipeline of described half camber structure are fitted.
Preferably, in described Intelligent electric-heating oil-collecting gas gathering system, described ribbon heater, also comprises:
Be coated on the isolation layer of the surrounding of described mutually stranded heating heart yearn and optical fiber;
Be coated on the outer jointing jacket of described isolation layer outside;
Be coated on the screen layer of described outer jointing jacket outside; ;
For the protection of the reinforced layer of described screen layer.
Preferably, in described Intelligent electric-heating oil-collecting gas gathering system, the quantity of described heating heart yearn, optical fiber, isolation layer, screen layer and protecting jacket is multiple, and described heating heart yearn, optical fiber, isolation layer, screen layer and protecting jacket one_to_one corresponding.
Preferably, in described Intelligent electric-heating oil-collecting gas gathering system, described heating heart yearn and optical fiber parallel laid.
Preferably, in described Intelligent electric-heating oil-collecting gas gathering system, described regulating controller comprises:
The temperature monitoring unit that input end is connected with described optical fiber, for obtaining described optical fiber scattering, contrary with the laser singal direction that described generating laser exports scattering laser signal backward, adopt distributed optical fiber temperature measurement principle according to described scattering laser signal and laser singal calculate match with described scattering laser signal, for characterizing temperature signal and the position signal of described heating heart yearn temperature, described temperature signal is passed to data analysis unit by management unit;
The management unit that first end is connected with the output terminal of described temperature monitoring unit, for realizing the signal transmission in described regulating controller between unit;
Data analysis unit is connected with described management unit second end, carries out contrast carry out confession electric heating or power-off according to comparative result to described ribbon heater and lower the temperature and control for the temperature signal that will get and preset temperature signals;
The information remote transmitting unit be connected with described management unit, for being sent to man-machine interactive platform by wireless network by described temperature signal and position signal.
Preferably, in described Intelligent electric-heating oil-collecting gas gathering system, described man-machine interactive platform, specifically for showing default pipeline map, and after getting described temperature signal and position signal, judge described temperature signal whether in preset range, adopt the identification information matched with judged result to mark the target location matched with described position signal in described pipeline map.
Preferably, in described Intelligent electric-heating oil-collecting gas gathering system, described man-machine interactive platform comprises:
Pipeline mapping module, for storing and showing the pipeline map of user preset;
Comparison module, for judging described electrical signal whether in preset range, if so, exports the first mark signal to labeling module, otherwise mutually described labeling module exports the second mark signal;
Labeling module, for searching according to map listing the target location matched with described position information in described pipeline map, when getting the first mark signal, the first mark is adopted to mark described target location, when getting the second mark signal, the second mark is adopted to mark described target location, and outputting alarm signal;
The coordinate information of target location on pipeline map storing position information in wherein said map listing and match with described position information.
Preferably, in described Intelligent electric-heating oil-collecting gas gathering system, described temperature monitoring unit comprises:
The photodetector that input end is connected with described optical fiber, for obtaining described optical fiber scattering, contrary with the laser singal that described generating laser exports scattering laser signal backward, processing described scattering laser signal, and exporting processing circuit to;
The input end of described processing circuit is connected with the output terminal of described photodetector, for being sent to processor by after the signal filtering got, Shape correction;
The input end of described processor is connected with the output terminal of described signal processing circuit, output terminal is connected with described management unit, for processing the signal after filter shape according to distributed optical fiber temperature measurement principle, calculate the temperature signal and position signal that match with described scattering laser signal.
Known by above scheme, optical fiber is provided with in ribbon heater in described Intelligent electric-heating oil-collecting gas gathering system disclosed in the above embodiments of the present application, therefore distributed optical fiber temperature measurement principle can be adopted to process the scattering laser signal of described optical fiber and incident laser signal, the position information of the light producing scattering laser signal can be obtained, and the temperature information corresponding to this position, therefore namely judge whether described Intelligent electric-heating oil-collecting gas gathering system exists fault by described temperature information, when a failure occurs, the conduit positions broken down is located by described position information, thus reach the object of fault being carried out to process in time.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technological scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
The structural drawing of Fig. 1 a kind of Intelligent electric-heating oil-collecting gas gathering system disclosed in the embodiment of the present application;
The structural drawing of Fig. 2 a kind of thermal insulation pipe disclosed in the embodiment of the present application;
The structural drawing of Fig. 3 a kind of ribbon heater disclosed in the embodiment of the present application;
The structural drawing of Fig. 4 a kind of regulating controller disclosed in the embodiment of the present application;
The structural drawing of Fig. 5 a kind of man-machine interactive platform disclosed in the embodiment of the present application.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technological scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Distributed optical fiber temperature sensing system DTS is based on fiber Raman (Raman) scattering phenomenon.The light pulse that laser light source sends and optical fiber interaction of molecules, Raman scattering occurs, and Raman scattering is associated with the thermal vibration of optical fiber molecule, thus has sensitivity to temperature, can be used for carrying out thermometry.In a fiber, because scattered signal is continuous print, by using the time lag between high-speed signal acquisition commercial measurement incident light and Raman diffused light, the position that Raman diffused light occurs can be obtained, because Raman diffused light is to responsive to temperature, the corresponding temperature distribution of position institute Raman occurring and penetrates therefore can be measured.
The distributed optical fiber temperature sensing system of visible employing distributed optical fiber temperature measurement principle, can detect accurately and the position of Raman diffused light generation and the temperature corresponding to this position occur.
The structural drawing of Fig. 1 a kind of Intelligent electric-heating oil-collecting gas gathering system disclosed in the embodiment of the present application;
The structural drawing of Fig. 2 a kind of thermal insulation pipe disclosed in the embodiment of the present application;
The structural drawing of Fig. 3 a kind of ribbon heater disclosed in the embodiment of the present application.
Therefore the embodiment of the invention discloses a kind of application distribution optical fiber temperature-measurement principle, can the Intelligent electric-heating oil-collecting gas gathering system of the temperature information of each position of oil circuit in computational intelligence electric heating oil-collecting gas gathering system, see Fig. 1-Fig. 3, comprising:
Thermal insulation pipe 1, ribbon heater 2, generating laser 3, regulating controller 4 and man-machine interactive platform 5;
Described ribbon heater 2 is interted in the heat radiation threading groove 101 of described thermal insulation pipe 1;
Mutually stranded optical fiber 201 and heating heart yearn 202 is provided with in described ribbon heater 2;
Described generating laser 3 is connected with described optical fiber 201, for described optical fiber 201 Output of laser signal;
The temperature acquisition end of described regulating controller 4 is connected with described optical fiber 201, for obtaining described optical fiber 201 scattering, contrary with the laser singal direction that described generating laser 3 exports scattering laser signal backward, adopt distributed optical fiber temperature measurement principle to obtain the temperature information that matches with described scattering laser signal and position information according to described scattering laser calculated signals, described temperature information and position information are sent to man-machine interactive platform 5;
Described man-machine interactive platform 5 is for marking the pipeline map preset according to described temperature information and position information.
Visible, optical fiber 201 is provided with in ribbon heater 2 in described Intelligent electric-heating oil-collecting gas gathering system disclosed in the above embodiments of the present application, therefore distributed optical fiber temperature measurement principle can be adopted to process the scattering laser signal of described optical fiber and incident laser signal, the position of the light producing scattering laser signal can be obtained, and the temperature information corresponding to this position, be arranged in described ribbon heater because described optical fiber and described heating heart yearn are stranded, therefore the described position information calculated and temperature information also can characterize position information and the temperature information of the ribbon heater that scattering occurs, by temperature information, namely user judges whether pipeline breaks down, if there is fault, namely the conduit positions broken down is located by described position information, thus reach the object of fault being carried out to process in time.
In Intelligent electric-heating oil-collecting gas gathering system, described thermal insulation pipe 1 and ribbon heater 2 are the basis of this system, and its quality is directly connected to precision and the reliability of this system, therefore, see Fig. 2 and Fig. 3, disclosed herein as well is the concrete structure figure of a kind of thermal insulation pipe and ribbon heater;
See Fig. 2, described thermal insulation pipe 1, can comprise:
Seamless pipeline 100;
Be fitted in the heat radiation threading groove 101 on described seamless pipeline 100;
For be arranged on described seamless pipeline 100, for the fixing pin 102 of fixing described heat radiation threading groove 101;
Be coated on the thermal insulation layer 103 around described seamless pipeline 100 and described heat radiation threading groove 102.
Certainly, be understandable that, in order to increase the new energy of heat trnasfer of described seamless pipeline, so that it can obtain heat by described heat radiation threading groove 101 fast, described seamless pipeline 100 can be metal tubes, and such as, it can be seamless steel pipe.Described heat radiation threading groove 101 can be the aluminum alloy material of half camber structure, and concave surface and the described seamless pipeline of described half camber structure are fitted, thus Rapid Thermal between described heat radiation threading groove 101 and described seamless pipeline is exchanged.To be corroded oxidation to prevent described seamless pipeline 100; described seamless pipeline 100 can also be coated with a corrosion-resistant coating; certainly; do not damaged by external force to protect described thermal insulation pipe 1 further; described thermal insulation pipe in the above embodiments of the present application can also comprise the reinforced layer that is arranged on described thermal insulation layer outside, and such as described reinforced layer can be jacket leather layer.Certainly in order to ensure the quality of described thermal insulation pipe 1, described thermal insulation pipe 1 can adopt once prefabricated profiled mode to be made.
See Fig. 3, disclosed in the embodiment of the present application, described ribbon heater 2 can comprise:
Heating heart yearn 202;
The optical fiber 201 mutually stranded with described heating heart yearn 202;
Be coated on the isolation layer 203 of the surrounding of described mutually stranded heating heart yearn 202 and optical fiber 201;
Be coated on the outer jointing jacket 204 of described isolation layer 203 outside;
Be coated on the screen layer (206) of described isolation layer 204 outside;
For the protection of the reinforced layer 205 of described screen layer.
Wherein, described isolation layer 203 and described protecting jacket 204 can adopt fluorine material F46 to be made, and described optical fiber 201 can adopt armouring special optical cable multi-mould optical fibre.
Be understandable that; in described ribbon heater 2; the quantity of described optical fiber can be one also can be multiple; when the quantity of described optical fiber 201 is 1; described optical fiber 201 can be mutually stranded with one of them heart yearn 202 that generates heat in described ribbon heater; certainly; the quantity of described optical fiber 201 also can be multiple; now described heating heart yearn 202, isolation layer 203, screen layer 206 can be identical with the quantity of described optical fiber 201 with the quantity of protecting jacket 204, and described heating heart yearn, optical fiber, isolation layer, screen layer and protecting jacket one_to_one corresponding.Being understandable that, interting groove 101, described heating heart yearn 202 and described optical fiber 201 parallel laid to make the convenient heat radiation interting described thermal insulation pipe 1 in described ribbon heater 2.
Be understandable that, the length of described ribbon heater 2 is relevant with the size of its power supply voltage, power supply voltage is larger, the length of described ribbon heater 2 is longer, such as, when described power supply voltage is 660V, the length of described ribbon heater 2 can be 3000 meters, when described power supply voltage is 380V, the length of described ribbon heater is 1500 meters.
Be understandable that, see Fig. 4, disclosed herein as well is a kind of concrete structure figure of described regulating controller 4, see Fig. 4, described regulating controller 4 can comprise:
The temperature monitoring unit 401 that input end is connected with described optical fiber, for obtaining described optical fiber 201 scattering, contrary with the laser singal direction that described generating laser 3 exports scattering laser signal backward, obtain matching with described scattering laser signal according to described scattering laser calculated signals, for characterizing temperature signal and the position signal of described heating heart yearn temperature, described temperature signal is passed to data analysis unit 403 by management unit;
The management unit 402 that first end is connected with the output terminal of described temperature monitoring unit 401, for realizing the signal transmission in described regulating controller between unit;
Described data analysis unit 403 is connected with described management unit second end, for the temperature signal got and preset temperature signals are contrasted, according to comparative result, confession electric heating or power-off cooling control are carried out to described ribbon heater 2, as, when described temperature signal is lower than preset temperature signals, described ribbon heater is powered and heats, when described temperature is higher than preset temperature signals, cooling is carried out to the power-off of described ribbon heater and controls;
The information remote transmitting unit 404 be connected with described management unit 402, for being sent to man-machine interactive platform 5 by wireless network by described temperature signal and position signal.
Be understandable that, described regulating controller 4 can also comprise a storage unit 405, clock unit 406, power subsystem 407, described storage unit 405 is for realizing data storage function, described clock unit 406 determines the time for regulating controller, and described power subsystem 407 is for powering to unit.
Further, described temperature monitoring unit 401 can comprise:
The photodetector APD that input end is connected with described optical fiber, for obtaining described optical fiber scattering, contrary with the laser singal that described generating laser exports scattering laser signal backward, processing described scattering laser signal, and exporting processing circuit to;
The input end of described processing circuit is connected with the output terminal of described photodetector, for being sent to processor by after the signal filtering got, Shape correction;
The input end of described processor is connected with the output terminal of described signal processing circuit, output terminal is connected with described management unit, for processing the signal after filter shape according to distributed optical fiber temperature measurement principle, calculate the temperature signal and position signal that match with described scattering laser signal.
Be understandable that, conveniently user checks the status information of each conduit positions in Intelligent electric-heating oil-collecting gas gathering system, one is provided with for showing the pipeline map of pipeline the present situation in described man-machine interactive platform, described man-machine interactive platform is after getting described temperature signal and described position signal, judge described temperature signal whether in preset range, adopt the identification information matched with judged result to mark the target location matched with described position signal in described pipeline map.Need to illustrate time, each conduit positions of described pipeline map all exists and its position signal one to one.
See Fig. 5, described man-machine interactive platform 5 can specifically comprise:
Pipeline mapping module 501, for storing and showing the pipeline map of user preset;
Comparison module 502, for judging described electrical signal whether in preset range, if so, exports the first mark signal to labeling module, otherwise mutually described labeling module exports the second mark signal;
Labeling module 503, for searching according to map listing the target location matched with described position information in described pipeline map, when getting the first mark signal, the first mark is adopted to mark described target location, when getting the second mark signal, the second mark is adopted to mark described target location, and outputting alarm signal;
The coordinate information of target location on pipeline map storing position information in wherein said map listing and match with described position information.
In this specification, each embodiment adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiments, between each embodiment identical similar portion mutually see.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the present invention.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein can without departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (10)
1. an Intelligent electric-heating oil-collecting gas gathering system, is characterized in that, comprising:
Thermal insulation pipe, ribbon heater, generating laser, regulating controller and man-machine interactive platform;
Described ribbon heater is interted in the heat radiation threading groove of described thermal insulation pipe;
Mutually stranded optical fiber and heating heart yearn is provided with in described ribbon heater;
Described generating laser is connected with described optical fiber, for described optical fiber Output of laser signal;
The temperature acquisition end of described regulating controller is connected with described optical fiber, for obtaining described optical fiber scattering, contrary with the laser singal direction that described generating laser exports scattering laser signal backward, adopt distributed optical fiber temperature measurement principle to calculate the temperature information and position information that match with described scattering laser signal according to described scattering laser signal and laser singal, described temperature information and position information are sent to man-machine interactive platform;
Described man-machine interactive platform is used for marking the pipeline map preset according to described temperature information and position information.
2. Intelligent electric-heating oil-collecting gas gathering system according to claim 1, it is characterized in that, described thermal insulation pipe, comprising:
Seamless pipeline;
Be fitted in the heat radiation threading groove on described seamless pipeline;
For be arranged on described seamless pipeline, for the fixing pin of fixing described heat radiation threading groove;
Be coated on the thermal insulation layer around described seamless pipeline and described heat radiation threading groove.
3. Intelligent electric-heating oil-collecting gas gathering system according to claim 2, is characterized in that, described heat radiation threading groove, is the aluminum alloy material of half camber structure, and concave surface and the described seamless pipeline of described half camber structure are fitted.
4. Intelligent electric-heating oil-collecting gas gathering system according to claim 1, it is characterized in that, described ribbon heater, also comprises:
Be coated on the isolation layer of the surrounding of described mutually stranded heating heart yearn and optical fiber;
Be coated on the outer jointing jacket of described isolation layer outside;
Be coated on the screen layer of described outer jointing jacket outside;
For the protection of the reinforced layer of described screen layer.
5. Intelligent electric-heating oil-collecting gas gathering system according to claim 4; it is characterized in that; the quantity of described heating heart yearn, optical fiber, isolation layer, screen layer and protecting jacket is multiple, and described heating heart yearn, optical fiber, isolation layer, screen layer and protecting jacket one_to_one corresponding.
6. Intelligent electric-heating oil-collecting gas gathering system according to claim 5, is characterized in that, described heating heart yearn and optical fiber parallel laid.
7. Intelligent electric-heating oil-collecting gas gathering system according to claim 1, it is characterized in that, described regulating controller comprises:
The temperature monitoring unit that input end is connected with described optical fiber, for obtaining described optical fiber scattering, contrary with the laser singal direction that described generating laser exports scattering laser signal backward, adopt distributed optical fiber temperature measurement principle according to described scattering laser signal and laser singal calculate match with described scattering laser signal, for characterizing temperature signal and the position signal of described heating heart yearn temperature, described temperature signal is passed to data analysis unit by management unit;
The management unit that first end is connected with the output terminal of described temperature monitoring unit, for realizing the signal transmission in described regulating controller between unit;
Data analysis unit is connected with described management unit second end, carries out contrast carry out confession electric heating or power-off according to comparative result to described ribbon heater and lower the temperature and control for the temperature signal that will get and preset temperature signals;
The information remote transmitting unit be connected with described management unit, for being sent to man-machine interactive platform by wireless network by described temperature signal and position signal.
8. Intelligent electric-heating oil-collecting gas gathering system according to claim 7, it is characterized in that, described man-machine interactive platform, specifically for showing default pipeline map, and after getting described temperature signal and position signal, judge described temperature signal whether in preset range, adopt the identification information matched with judged result to mark the target location matched with described position signal in described pipeline map.
9. Intelligent electric-heating oil-collecting gas gathering system according to claim 7, it is characterized in that, described man-machine interactive platform comprises:
Pipeline mapping module, for storing and showing the pipeline map of user preset;
Comparison module, for judging described electrical signal whether in preset range, if so, exports the first mark signal to labeling module, otherwise mutually described labeling module exports the second mark signal;
Labeling module, for searching according to map listing the target location matched with described position information in described pipeline map, when getting the first mark signal, the first mark is adopted to mark described target location, when getting two mark signals, the second mark is adopted to mark described target location, and outputting alarm signal;
The coordinate information of target location on pipeline map storing position information in wherein said map listing and match with described position information.
10. Intelligent electric-heating oil-collecting gas gathering system according to claim 7, is characterized in that, described temperature monitoring unit comprises:
The photodetector that input end is connected with described optical fiber, for obtaining described optical fiber scattering, contrary with the laser singal that described generating laser exports scattering laser signal backward, processing described scattering laser signal, and exporting processing circuit to;
The input end of described processing circuit is connected with the output terminal of described photodetector, for being sent to processor by after the signal filtering got, Shape correction;
The input end of described processor is connected with the output terminal of described signal processing circuit, output terminal is connected with described management unit, for processing the signal after filter shape according to distributed optical fiber temperature measurement principle, calculate the temperature signal and position signal that match with described scattering laser signal.
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| IT201800006717A1 (en) * | 2018-06-27 | 2019-12-27 | Method of monitoring a continuous pipeline, monitoring device and assembly comprising said device | |
| WO2020003023A1 (en) * | 2018-06-27 | 2020-01-02 | Saipem S.P.A. | A method for monitoring a continuous pipeline, monitoring device and assembly comprising said device |
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Inventor after: Song Bin Inventor after: Wang Chao Inventor after: Wang Haifeng Inventor after: Liu Jia Inventor after: Guo Jian Inventor before: Song Bin Inventor before: Liu Jia Inventor before: Guo Jian Inventor before: Wang Haifeng |
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Effective date of registration: 20210208 Address after: 710065 No. 32 Tuanjie South Road, Xi'an High-tech Zone, Shaanxi Province Patentee after: Xi'an Sunward Aerospace Material Co.,Ltd. Address before: 163316 No.7, Yifeng Road, high tech Zone, Daqing City, Heilongjiang Province Patentee before: DAQING SUNVALOR AEROSPACE TECHNOLOGY Co.,Ltd. |