CN104635805A - Temperature control system - Google Patents
Temperature control system Download PDFInfo
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- CN104635805A CN104635805A CN201410815796.6A CN201410815796A CN104635805A CN 104635805 A CN104635805 A CN 104635805A CN 201410815796 A CN201410815796 A CN 201410815796A CN 104635805 A CN104635805 A CN 104635805A
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Abstract
The invention provides a temperature control system which comprises a low temperature thermodetector, a high temperature thermodetector, a temperature control instrument and a power controller. According to the temperature control system, whole-process high-accuracy temperature measurement and control in the temperature rising and reducing process of a measured object are implemented; in the high and low temperature control conversion process, the low temperature thermodetector and the high temperature thermodetector measure a temperature together in the high and low temperature transition stage, so that a control signal is guaranteed not to be sharply and greatly changed, a power distribution system and a heating element are prevented from being impacted, high and low temperature super-stable undisturbed automatic switching control is implemented and temperature control accuracy of high-temperature equipment is improved.
Description
Technical field
The application relates to technical field of temperature control, particularly relates to a kind of temperature control system.
Background technology
Thermopair is as a kind of comparatively conventional temperature element, and it is simple, reliable, measuring accuracy is higher, but because thermocouple well pipe is by the restriction of exotic material, can not be applied to the measurement of high-temperature (> 1800 DEG C).And infrared thermometer is a kind of indirect temperature measuring device, the high temperature of more than 1800 DEG C can be measured, but when the temperature requiring to detect reaches more than 2500 DEG C, its lowest temperature that can measure is 900 DEG C.The control procedure of high-temperature service temperature is: the temperature signal input temperature control instrument that temperature element will collect, the temperature value of temperature control instrument comparative analysis reality and setting value, the result of process is transformed into electric signal and exports to power controller, power controller receives the control signal of temperature control instrument, regulate the output power of heating power supply, thus realize the control to temperature.
At present, the temperature control scheme that high-temperature service adopts mainly contains two kinds: one is at cold stage not temperature control, when constant power output reaches the measurement range of infrared thermometer to temperature, runs temperature control instrument; Another kind of scheme adopts two-way to control output signal, cold stage adopts thermopair observing and controlling temperature, hot stage adopts infrared thermometer observing and controlling temperature, switches the control output signal of thermopair and infrared measurement of temperature, just can meet the technological requirement of low temperature and high temperature section simultaneously in high/low temperature critical point.But the whole process of first method only controls high temperature section, low-temperature zone temperature controls relatively blindly, cannot meet the requirement of low-temperature zone technique.First scheme controls the moment of conversion in high/low temperature, control signal fluctuation is large, even likely there is the phenomenon that thermocouple temperature measurement and infrared thermometer observing and controlling temperature replace mutually, be zero when causing heating power to export, Shi Erwei is full, cause equipment intensification fault, and very large impact is produced to heater and whole electrical network.
Summary of the invention
In view of this, this application provides a kind of temperature control system, with overcome high-temperature service temperature controlled processes in prior art cannot meet simultaneously low temperature and high temperature section technological requirement or due to high/low temperature control conversion moment cause the problems such as equipment intensification fault.
For achieving the above object, the application provides following technical scheme:
A kind of temperature control system, comprising: low temperature temperature measurer, high-temperature measurement instrument, temperature control instrument and power controller;
Described low temperature temperature measurer is used for the first temperature signal gathering described determinand when the temperature of determinand is less than the first preset temperature, described first temperature signal is transferred to described temperature control instrument, and, when the temperature of described determinand is not less than the first preset temperature and is not more than the second preset temperature and described high-temperature measurement instrument jointly gather the second temperature signal of described determinand, and respectively described second temperature signal is transferred to described temperature control instrument;
Described 3rd temperature signal also for gathering the 3rd temperature signal of described determinand when the temperature of described determinand is greater than described second preset temperature, and is transferred to described temperature control instrument by described high-temperature measurement instrument;
Described temperature control instrument is used for drawing according to described first temperature signal, described second temperature signal and described 3rd temperature signal the actual temperature value that described determinand is current, and described actual temperature value and preset temperature value are compared, comparative result is converted into electric signal and is sent to described power controller;
Described power controller is used for according to described electric signal, regulates the output power of heating power supply;
Wherein, described first preset temperature is less than described second preset temperature.
Preferably, also comprise: PLC, for when described determinand reaches described second preset temperature, control the distance of described low temperature temperature measurer and described determinand.
Preferably, the distance that described PLC controls described low temperature temperature measurer and described determinand comprises:
In temperature-rise period, when described determinand reaches described second preset temperature, the distance controlling described low temperature temperature measurer and described determinand is greater than predeterminable range;
In temperature-fall period, when described determinand reaches described second preset temperature, the distance controlling described low temperature temperature measurer and described determinand equals predeterminable range.
Preferably, also comprise: the mobile controller be connected with described low temperature temperature measurer, for the control according to described PLC, control the movement of described low temperature temperature measurer, to control the distance of described low temperature temperature measurer and described determinand.
Preferably, described mobile controller is cylinder or oil cylinder.
Preferably, also comprise: touch-screen, for described actual temperature value is shown.
Preferably, described low temperature temperature measurer is thermopair.
Preferably, described thermopair is specially K type thermocouple.
Preferably, described high-temperature measurement instrument is infrared thermometer.
Preferably, described first preset temperature is 985 DEG C, and described second preset temperature is 1000 DEG C.
From above technical scheme, this application discloses a kind of temperature control system, comprising: low temperature temperature measurer, high-temperature measurement instrument, temperature control instrument and power controller.This temperature control system achieves the omnidistance high precision observing and controlling temperature in measured object gradient of temperature process, control in the process of conversion at high and low temperature, by in high/low temperature transition period by low temperature temperature measurer and the common thermometric of high-temperature measurement instrument, ensure that control signal can not sharply significantly change, in order to avoid impact distribution system and heater, realize the overstable undisturbed auto-changeover control of high/low temperature, improve the temperature control precision of high-temperature service.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical 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 embodiments of the 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 the accompanying drawing provided.
The structural representation of a kind of temperature control system that Fig. 1 provides for the embodiment of the present application one;
The structural representation of a kind of temperature control system that Fig. 2 provides for the embodiment of the present application two.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical 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.
For overcome high-temperature service temperature controlled processes in prior art cannot meet simultaneously low temperature and high temperature section technological requirement or due to high/low temperature control conversion moment cause the problems such as equipment intensification fault, this application provides a kind of temperature control system, concrete scheme is as described below:
Embodiment one
The embodiment of the present application one provides a kind of temperature control system, as shown in Figure 1, and the structural representation of a kind of temperature control system that Fig. 1 provides for the embodiment of the present application one.This system comprises: low temperature temperature measurer 101, high-temperature measurement instrument 102, temperature control instrument 103 and power controller 104.
Low temperature temperature measurer 101 is for gathering the first temperature signal of determinand when the temperature of determinand is less than the first preset temperature, first temperature signal is transferred to temperature control instrument 103, and, when the temperature of determinand is not less than the first preset temperature and is not more than the second preset temperature and high-temperature measurement instrument 102 jointly gather the second temperature signal of determinand, and respectively the second temperature signal is transferred to temperature control instrument 103.
Wherein, low temperature temperature measurer is thermopair in this application, and this is not restricted.Concrete, thermopair can be K type thermocouple, also can be N-type thermopair, S type thermopair or C type thermopair etc.It should be noted that, as long as have the low temperature temperature measuring device of common factor all passable with effective temperature measuring area scope of high-temperature measurement instrument.3rd temperature signal also for gathering the 3rd temperature signal of determinand when the temperature of determinand is greater than the second preset temperature, and is transferred to temperature control instrument by high-temperature measurement instrument 102.
Wherein, high-temperature measurement instrument is infrared thermometer in this application, and this is not restricted.
Temperature control instrument 103 is for drawing according to the first temperature signal, the second temperature signal and the 3rd temperature signal the actual temperature value that determinand is current, and actual temperature value and preset temperature value are compared, comparative result is converted into electric signal and is sent to power controller.
Temperature control instrument 103 is provided with 2 input ends, 2 input ends are connected with two temperature measurers respectively, the output terminal of temperature control instrument 103 is connected with the input end of the power controller in power circuit, the temperature value of temperature control instrument comparative analysis reality and setting value, transform into electric signal by the result of process and export to power controller.Wherein, power circuit also may comprise the control circui such as isolating switch, contactor, fuse or protection components and parts and potential device etc.
Power controller is used for according to electric signal, regulates the output power of heating power supply.
Power controller receives the control signal of temperature control instrument, regulates the output power of heating power supply, realizes the control of in-furnace temperature.
Wherein, the first preset temperature is less than the second preset temperature.
Concrete, the first preset temperature can be set to 985 DEG C, and the second preset temperature can be set to 1000 DEG C, and this is not restricted, can select arbitrarily in the common factor of effective temperature-measuring range of low temperature temperature measurer and high-temperature measurement instrument.
From above technical scheme, the embodiment of the present application one discloses a kind of temperature control system, comprising: low temperature temperature measurer, high-temperature measurement instrument, temperature control instrument and power controller.This temperature control system achieves the omnidistance high precision observing and controlling temperature in measured object gradient of temperature process, control in the process of conversion at high and low temperature, by in high/low temperature transition period by low temperature temperature measurer and the common thermometric of high-temperature measurement instrument, ensure that control signal can not sharply significantly change, in order to avoid impact distribution system and heater, realize the overstable undisturbed auto-changeover control of high/low temperature, improve the temperature control precision of high-temperature service.
Embodiment two
On the basis of embodiment one, the embodiment of the present application two provides one temperature control system more specifically, as shown in Figure 2, and the structural representation of a kind of temperature control system that Fig. 2 provides for the embodiment of the present application two.This system comprises: thermopair 201, infrared thermometer 202, temperature control instrument 203, power controller 204, PLC 205, mobile controller 206 and touch-screen 207.
The function of thermopair 201, infrared thermometer 202, temperature control instrument 203 and power controller 204 can describe accordingly see in embodiment one, does not repeat them here.
The temperature controlled processes of high-temperature service is:
1) cold stage (as lower than 900 DEG C): adopt thermopair observing and controlling temperature, temperature-controlled precision is high, controls to stablize, and the difference of actual measurement temperature and design temperature can be controlled in ± and 1 DEG C;
2) high/low temperature transition period: when temperature reaches infrared thermometer measurement range in equipment, infrared thermometer observing and controlling temperature can not be converted to immediately, because now Infrared survey precision is low, now the most handy thermocouple correction (only need correct once), first timing will confirm that whether the focal length of infrared thermometer is correct, confirm infrared thermometer point for measuring temperature whether correct (through infrared thermometer observation port, a tracking cross can be seen just at center, visual angle).Thermopair precision comparatively infrared thermometer is high, and generally use thermocouple correction infrared thermometer, infrared thermometer can slightly compensate.After correcting, the measuring tempeature of infrared thermometer is higher than thermopair 1 ~ 2 DEG C, switches back and forth between thermopair and infrared thermometer to prevent measuring tempeature.The temperature range (as 985 DEG C ~ 1000 DEG C) of the conversion of infrared thermometer and thermopair in setting temperature control instrument.In this temperature range, infrared thermometer and the common thermometric of thermopair, due to infrared thermometer and thermocouple temperature measurement result basically identical (measuring tempeature of infrared thermometer is higher than thermopair 1 ~ 2 DEG C), so the fluctuation of output signal can not be caused, also can not impact heater and electrical network.
3) hot stage (as infrared thermometer records higher than 1000 DEG C): adopt infrared thermometer observing and controlling temperature, temperature-controlled precision is high, controls to stablize, and the difference of actual measurement temperature and design temperature can be controlled in ± and 1 DEG C.
PLC 205, for when determinand reaches the second preset temperature, controls low temperature temperature measurer, i.e. the distance of thermopair 201 and determinand.
Wherein, PLC control thermopair 201 comprises with the distance of determinand:
In temperature-rise period, when determinand reaches the second preset temperature, control thermopair 201 and be greater than predeterminable range with the distance of determinand;
In temperature-fall period, when determinand reaches the second preset temperature, control thermopair 201 and equal predeterminable range with the distance of determinand.Concrete, because thermopair position in stove is different, measured temperature may be caused to have difference, therefore the position of stationary heat galvanic couple can ensure the stability of measuring tempeature.Wherein, concrete predeterminable range can carry out selection debugging according to actual conditions, does not limit in this application.
Mobile controller 206 is connected with thermopair 201, for the control according to PLC 205, controls the movement of thermopair 201, to control the distance of low temperature temperature measurer and determinand.Wherein, mobile controller 206 is cylinder or oil cylinder, and this is not restricted, also can be other power-equipments.
Concrete, thermopair 201 is arranged on determinand by mobile controller 206, as on body of heater, measures the temperature of furnace interior at cold stage, and the temperature signal input temperature control instrument that will collect; Infrared thermometer 202 is arranged on body of heater, the temperature of furnace interior is measured at hot stage, and the temperature signal input temperature control instrument that will collect, the temperature value of temperature control instrument comparative analysis reality and setting value, the result of process is transformed into electric signal and exports to power controller, power controller receives the control signal of temperature control instrument, regulates the output power of heating power supply, realizes the control of in-furnace temperature.
Actual temperature value in temperature control instrument and PLC communication acquisition stove, PLC output point controls mobile controller.PLC internal composition corresponding program, by controlling the lifting of mobile controller or the mobile position controlling thermopair.
Temperature rise period, when device interior temperature exceed thermopair exit desired temperature time, PLC, to mobile controller signal, allows thermopair exit burner hearth, prevents temperature too high and burns out thermopair; Temperature-fall period, when device interior temperature inserts desired temperature lower than thermopair, PLC, to mobile controller signal, allows thermopair enter burner hearth, in order to avoid lower than the temperature signal of instrument measurement during infrared thermometer range to mistake.
In addition, at native system, touch-screen 207 can also be set, this touch-screen 207 can be connected with PLC as shown in Figure 2, thus realize display, in real time monitoring, the record of temperature in equipment, and the inquiry of other data, record and arrangement, directly can also be connected with temperature control instrument 203, actual temperature value is shown.
This gathers Thermocouple Temperature Signal and infrared thermometer temperature signal by using same temperature control instrument simultaneously, and set the correlation parameter that thermopair and infrared thermometer carry out automatic switching function, comprise: the inversion temperature etc. of the common temperature-measuring range of thermocouple temperature measurement scope, thermopair and infrared thermometer, infrared thermometer thermometric and thermocouple temperature measurement, and coordinate the program of PLC, realize the overstable undisturbed of high/low temperature and automatically control.This temperature control system achieves the omnidistance high precision observing and controlling temperature in measured object gradient of temperature process, control in the process of conversion at high and low temperature, by in high/low temperature transition period by low temperature temperature measurer and the common thermometric of high-temperature measurement instrument, ensure that control signal can not sharply significantly change, in order to avoid impact distribution system and heater, realize the overstable undisturbed auto-changeover control of high/low temperature, improve the temperature control precision of high-temperature service.
Finally, also it should be noted that, in this article, the such as relational terms of first and second grades and so on is only used for an entity or operation to separate with another entity or operational zone, and not necessarily requires or imply the relation that there is any this reality between these entities or operation or sequentially.And, term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, thus make to comprise the process of a series of key element, method, article or equipment and not only comprise those key elements, but also comprise other key elements clearly do not listed, or also comprise by the intrinsic key element of this process, method, article or equipment.When not more restrictions, the key element limited by statement " comprising ... ", and be not precluded within process, method, article or the equipment comprising described key element and also there is other identical element.
In this instructions, 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 application.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein when not departing from the spirit or scope of the application, can realize in other embodiments.Therefore, the application 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. a temperature control system, is characterized in that, comprising: low temperature temperature measurer, high-temperature measurement instrument, temperature control instrument and power controller;
Described low temperature temperature measurer is used for the first temperature signal gathering described determinand when the temperature of determinand is less than the first preset temperature, described first temperature signal is transferred to described temperature control instrument, and, when the temperature of described determinand is not less than the first preset temperature and is not more than the second preset temperature and described high-temperature measurement instrument jointly gather the second temperature signal of described determinand, and respectively described second temperature signal is transferred to described temperature control instrument;
Described 3rd temperature signal also for gathering the 3rd temperature signal of described determinand when the temperature of described determinand is greater than described second preset temperature, and is transferred to described temperature control instrument by described high-temperature measurement instrument;
Described temperature control instrument is used for drawing according to described first temperature signal, described second temperature signal and described 3rd temperature signal the actual temperature value that described determinand is current, and described actual temperature value and preset temperature value are compared, comparative result is converted into electric signal and is sent to described power controller;
Described power controller is used for according to described electric signal, regulates the output power of heating power supply;
Wherein, described first preset temperature is less than described second preset temperature.
2. system according to claim 1, is characterized in that, also comprises: PLC, for when described determinand reaches described second preset temperature, controls the distance of described low temperature temperature measurer and described determinand.
3. system according to claim 2, is characterized in that, the distance that described PLC controls described low temperature temperature measurer and described determinand comprises:
In temperature-rise period, when described determinand reaches described second preset temperature, the distance controlling described low temperature temperature measurer and described determinand is greater than predeterminable range;
In temperature-fall period, when described determinand reaches described second preset temperature, the distance controlling described low temperature temperature measurer and described determinand equals predeterminable range.
4. system according to claim 3, it is characterized in that, also comprise: the mobile controller be connected with described low temperature temperature measurer, for the control according to described PLC, control the movement of described low temperature temperature measurer, to control the distance of described low temperature temperature measurer and described determinand.
5. system according to claim 4, is characterized in that, described mobile controller is cylinder or oil cylinder.
6. system according to claim 3, is characterized in that, also comprises: touch-screen, for described actual temperature value being shown.
7. system according to claim 1, is characterized in that, described low temperature temperature measurer is thermopair.
8. system according to claim 7, is characterized in that, described thermopair is specially K type thermocouple.
9. system according to claim 1, is characterized in that, described high-temperature measurement instrument is infrared thermometer.
10. system according to claim 1, is characterized in that, described first preset temperature is 985 DEG C, and described second preset temperature is 1000 DEG C.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105050219A (en) * | 2015-07-10 | 2015-11-11 | 汪建英 | Servo heating system |
| CN108751186A (en) * | 2018-08-28 | 2018-11-06 | 湖南烯瑞自动化设备有限公司 | A kind of infrared temperature measurement apparatus and graphitizing furnace |
| CN114396746A (en) * | 2022-01-25 | 2022-04-26 | 烟台艾睿光电科技有限公司 | Control method and control system for refrigerating machine |
| CN114615776A (en) * | 2022-03-09 | 2022-06-10 | 珠海市圣昌电子有限公司 | Power supply overheating protection staged load reduction method and system |
| CN115649676A (en) * | 2022-09-01 | 2023-01-31 | 河北张宣高科科技有限公司 | Real-time early warning system and method for safe storage of direct reduced iron |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050016443A1 (en) * | 2003-07-21 | 2005-01-27 | Memc Electronic Materials, Inc. | Method to monitor and control the crystal cooling or quenching rate by measuring crystal surface temperature |
| CN101006899A (en) * | 2006-01-25 | 2007-08-01 | Lg电子株式会社 | Temperature sensing circuit in cooking appliance and controlling method of the same |
| US20100143231A1 (en) * | 2007-03-19 | 2010-06-10 | Mnk-Sog Silicon, Inc. | Method and Apparatus for Manufacturing Silicon Ingot |
| CN102107221A (en) * | 2009-12-23 | 2011-06-29 | 宝山钢铁股份有限公司 | Instrument and method for measuring temperature of lower surface of band steel |
| CN102605424A (en) * | 2012-03-06 | 2012-07-25 | 浙江宏业新能源有限公司 | Control system for polysilicon ingot furnace and control method |
| CN102927830A (en) * | 2012-11-01 | 2013-02-13 | 西安电炉研究所有限公司 | Measurement and control system with discriminative tracking for temperature of high-temperature resistance furnace and monitoring method thereof |
| CN202887019U (en) * | 2012-10-18 | 2013-04-17 | 深圳市石金科技有限公司 | Electrical control device and high-temperature purifying furnace |
-
2014
- 2014-12-24 CN CN201410815796.6A patent/CN104635805B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050016443A1 (en) * | 2003-07-21 | 2005-01-27 | Memc Electronic Materials, Inc. | Method to monitor and control the crystal cooling or quenching rate by measuring crystal surface temperature |
| CN101006899A (en) * | 2006-01-25 | 2007-08-01 | Lg电子株式会社 | Temperature sensing circuit in cooking appliance and controlling method of the same |
| US20100143231A1 (en) * | 2007-03-19 | 2010-06-10 | Mnk-Sog Silicon, Inc. | Method and Apparatus for Manufacturing Silicon Ingot |
| CN102107221A (en) * | 2009-12-23 | 2011-06-29 | 宝山钢铁股份有限公司 | Instrument and method for measuring temperature of lower surface of band steel |
| CN102605424A (en) * | 2012-03-06 | 2012-07-25 | 浙江宏业新能源有限公司 | Control system for polysilicon ingot furnace and control method |
| CN202887019U (en) * | 2012-10-18 | 2013-04-17 | 深圳市石金科技有限公司 | Electrical control device and high-temperature purifying furnace |
| CN102927830A (en) * | 2012-11-01 | 2013-02-13 | 西安电炉研究所有限公司 | Measurement and control system with discriminative tracking for temperature of high-temperature resistance furnace and monitoring method thereof |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105050219A (en) * | 2015-07-10 | 2015-11-11 | 汪建英 | Servo heating system |
| CN108751186A (en) * | 2018-08-28 | 2018-11-06 | 湖南烯瑞自动化设备有限公司 | A kind of infrared temperature measurement apparatus and graphitizing furnace |
| CN114396746A (en) * | 2022-01-25 | 2022-04-26 | 烟台艾睿光电科技有限公司 | Control method and control system for refrigerating machine |
| CN114615776A (en) * | 2022-03-09 | 2022-06-10 | 珠海市圣昌电子有限公司 | Power supply overheating protection staged load reduction method and system |
| CN115649676A (en) * | 2022-09-01 | 2023-01-31 | 河北张宣高科科技有限公司 | Real-time early warning system and method for safe storage of direct reduced iron |
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Address after: 410199 No. 1271, liangtang East Road, Xingsha industrial base (Changlong Street), Changsha area, China (Hunan) pilot Free Trade Zone, Changsha, Hunan Province Patentee after: ADVANCED CORPORATION FOR MATERIALS & EQUIPMENTS Co.,Ltd. Address before: 410131 Hunan Dingli Technology Co., Ltd., east of Lantian North Road, north of liangtang East Road, west of Shuangtang Road, Xingsha industrial base, Changsha Economic and Technological Development Zone, Changsha City, Hunan Province Patentee before: ADVANCED CORPORATION FOR MATERIALS & EQUIPMENTS Co.,Ltd. |
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| CP02 | Change in the address of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 410199 No. 1271, liangtang East Road, Xingsha industrial base (Changlong Street), Changsha area, China (Hunan) pilot Free Trade Zone, Changsha, Hunan Province Patentee after: Hunan Dingli Technology Co.,Ltd. Address before: 410199 No. 1271, liangtang East Road, Xingsha industrial base (Changlong Street), Changsha area, China (Hunan) pilot Free Trade Zone, Changsha, Hunan Province Patentee before: ADVANCED CORPORATION FOR MATERIALS & EQUIPMENTS Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder |