CN102103894A - IGBT (insulated gate bipolar transistor) based drive circuit of control rod control system - Google Patents
IGBT (insulated gate bipolar transistor) based drive circuit of control rod control system Download PDFInfo
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- CN102103894A CN102103894A CN2010105020342A CN201010502034A CN102103894A CN 102103894 A CN102103894 A CN 102103894A CN 2010105020342 A CN2010105020342 A CN 2010105020342A CN 201010502034 A CN201010502034 A CN 201010502034A CN 102103894 A CN102103894 A CN 102103894A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
Abstract
The embodiment of the invention discloses an IGBT (insulated gate bipolar transistor) based drive circuit of a control rod control system. The drive circuit comprises a three-phase half wave rectifier circuit, a first IGBT (chopped wave tube), a second IGBT (inversion tube) and a driving mechanism coil, wherein the collector of the first IGBT is connected with the positive output end of the three-phase half wave rectifier circuit; the emitter of the second IGBT is connected with the three-phase half wave rectifier circuit ground; the positive electrode of the driving mechanism coil is connected with the emitter of the first IGBT, and the negative electrode of the driving mechanism coil is connected with the collector of the second IGBT; and the gates of the first IGBT and second IGBT are connected with a pulse generating device. The embodiment of the invention has the following beneficial effects: the current regulation control circuit can be simplified; the reliability of the circuit can be improved; the ascending and descending rates of the current can be improved; and the current ripple can be lower.
Description
Technical field
The present invention relates to nuclear reactor control field, relate in particular to a kind of based on insulated gate bipolar transistor (Insulated Gate Bipolar Transistor, control rod control system driving circuit IGBT).
Background technology
In existing a kind of pressurized-water reactor nuclear power plant, the quick adjustment of the power of reactor mainly realizes by the control rod control system.The control rod control system has comprised several power cabinets and a steering logic cabinet.Each power cabinet has comprised that several can drive the power supply cabinet of driving mechanism coil.Generally speaking, judge the quality of power cabinet performance, judge that mainly it exports to driving mechanism coil current waveform parameter.These parameters mainly comprise: the speed that electric current rises and descends, the ripple of electric current and electrical source power factor etc.
And in the control system of existing pressurized water reactor nuclear power station control bar, all be to use traditional controllable silicon as the controlled rectification element.Controllable silicon is the half control element, when it is used as the element of rectification circuit, is to adopt three-phase semiwave controlled rectification technology, needs phase-shift circuit to control the size of the conduction angle of every electricity mutually with the adjusting electric current, and control mode is more loaded down with trivial details.And this technology exists output current ripple big, and the big shortcoming of equipment volume.And it can not snap-out release driving mechanism self-induction of loop answer electromotive force, cause output current wave rising and fall time speed all slower.
Summary of the invention
Embodiment of the invention technical matters to be solved is, a kind of control rod control system driving circuit based on IGBT is provided, in the hope of simplifying current control circuit, reduce output current ripple and improving the rising and the fall off rate of output current.
In order to solve the problems of the technologies described above, the embodiment of the invention provides a kind of control rod control system driving circuit based on IGBT, comprising:
Three-plase half wave rectifier circuit;
The one IGBT, its collector links to each other with the cathode output end of described three-plase half wave rectifier circuit;
The 2nd IGBT, its emitter connects three-plase half wave rectifier circuit ground;
The driving mechanism coil, its positive pole links to each other with the emitter of a described IGBT, and its negative pole links to each other with the collector of the 2nd IGBT;
The grid of the grid of a described IGBT and the 2nd IGBT all links to each other with pulse generating unit.
Preferably, further comprise energy release circuit, described energy release circuit comprises:
Filter capacitor C3, its positive pole links to each other with the cathode output end of described three-plase half wave rectifier circuit, and its negative pole links to each other with the emitter of described the 2nd IGBT;
The first diode VD1, its positive pole links to each other with the negative pole of described driving mechanism coil, and its negative pole links to each other with the positive pole of described filter capacitor C3;
The second diode VD2, its negative pole links to each other with the positive pole of described driving mechanism coil, and its positive pole links to each other with the negative pole of described filter capacitor C3.
Preferably, further comprise:
First holding circuit comprises first resistance R 1 and first capacitor C 1 of mutual series connection, and described first holding circuit is serially connected between the collector and emitter of a described IGBT;
Second holding circuit comprises second resistance R 2 and second capacitor C 2 of mutual series connection, and described second holding circuit is serially connected between the collector and emitter of described the 2nd IGBT.
Preferably, further comprise:
Being serially connected in being used between the grid of a described IGBT and the emitter prevents that a described IGBT grid is unsettled and is subject to disturb and produces the 3rd resistance R 3 of misoperation;
Being serially connected in being used between the grid of described the 2nd IGBT and the emitter prevents that described the 2nd IGBT grid is unsettled and is subject to disturb and produces the 4th resistance R 4 of misoperation.
Preferably, a described IGBT is the copped wave pipe; Described the 2nd IGBT is the inversion pipe.
Preferably, each pulse generating unit that links to each other with the grid of the grid of a described IGBT and the 2nd IGBT is the pulse-width modulation PWM circuit.
Implement the embodiment of the invention, have following beneficial effect:
Because IGBT is full control elements, can simplify the current regulation control circuit with it as driving element, and improve the reliability of circuit, and reduce the overall volume of control rod control system equipment.
Owing to adopted unique energy release circuit, can allow the self-induction electromotive force of driving mechanism coil pass through this energy release circuit snap-out release, improved the rising and the fall off rate of electric current, thereby made the driving mechanism action rapider.
Employing pulse-width modulation PWM mode is regulated the output current on the described driving mechanism coil, can make current ripples littler.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the structural representation of a kind of control rod control system driving circuit based on IGBT in the embodiment of the invention;
Fig. 2 is the current waveform of driving mechanism coil in the embodiment of the invention, with the output waveform synoptic diagram of IGBT.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that is obtained under the creative work prerequisite.
The present invention is a kind of driving circuit that adopts high-power insulated gate bipolar transistor IGBT as driving element.IGBT is a kind of fast-developing in recent years turn-off device.Characteristics such as compared with traditional devices such as controllable silicon, it is fast to have switching speed, and control mode is simple, and junction voltage is low, thereby be widely used in field of power electronics.The employing pulse modulation technology can be realized the control to the output current size.
Seeing also shown in Figure 1ly, is the structural representation of a kind of control rod control system driving circuit based on IGBT of embodiments of the invention; Particularly, comprising:
A three-plase half wave rectifier circuit is rectified into direct supply with three-phase alternating-current supply, and this three phase half wave rectification electric current is realized with the diode that three-phase alternating-current supply respectively is connected respectively by three, do not given unnecessary details at this;
The one IGBT, its collector c links to each other with the cathode output end of this three-plase half wave rectifier circuit, i.e. copped wave pipe VT1 shown in the figure;
The 2nd IGBT, its emitter e connects three-plase half wave rectifier circuit ground, i.e. VT2 shown in the figure;
Driving mechanism coil 1, its positive pole links to each other with the emitter e of an IGBT, and its negative pole links to each other with the collector c of the 2nd IGBT;
The grid g of the one IGBT all links to each other with a pulse generating unit (not shown) with the grid g of the 2nd IGBT, reception is from the pulsating wave of pulse generating unit, be understandable that, this pulse generating unit can be various pulse generating units commonly used, for example width modulation (Pulse-width modulation, PWM) circuit.By the G1 among the figure and S1 interface to an IGBT input pulse ripple, perhaps by the G2 among the figure and S2 interface to the 2nd IGBT input pulse ripple.
Further, this driving circuit also comprises an energy release circuit, and this energy release circuit comprises:
Filter capacitor C3, its positive pole links to each other with the cathode output end of three-plase half wave rectifier circuit, and its negative pole links to each other with the emitter of the 2nd IGBT;
The first diode VD1, its positive pole links to each other with the negative pole of driving mechanism coil, and its negative pole links to each other with the positive pole of filter capacitor C3;
The second diode VD2, its negative pole links to each other with the positive pole of driving mechanism coil, and its positive pole links to each other with the negative pole of filter capacitor C3.
This first diode VD1 and the second diode VD2 are fast recovery diode.
Further, this driving circuit also comprises:
First holding circuit, first resistance R 1 and first capacitor C 1 that comprise mutual series connection, this first holding circuit is serially connected between the collector and emitter of an IGBT, is used to avoid the voltage between the collector and emitter of an IGBT to raise for a certain reason and fast;
Second holding circuit; second resistance R 2 and second capacitor C 2 that comprise mutual series connection; this second holding circuit is serially connected between the collector and emitter of the 2nd IGBT, is used to avoid the voltage between the collector and emitter of the 2nd IGBT to raise for a certain reason and fast.
In addition, between the grid of an IGBT and emitter, be connected in series one the 3rd resistance R 3, be used to prevent the unsettled and issuable misoperation of grid of an IGBT; In like manner, between the grid of the 2nd IGBT and emitter, be connected in series one the 4th resistance R 4, be used to prevent the unsettled and issuable misoperation of grid of the 2nd IGBT.
Because the driving mechanism coil is equivalent to a big inductance that inductance value is very big.Therefore, can regulate size by pulse modulation technology by the electric current of this driving mechanism coil.As everyone knows, when cutting off inductive current, inductance will produce an induction electromotive force opposite with former electromotive force, thereby produce an induction current identical with the primary current direction.Be after primary current is cut off, the electric current in the inductance can not drop to zero at once, but can continue for some time along original direction.Around this principle, we can allow the driving mechanism coil incessantly by a series of wide pulse currents, because the filter action of above-mentioned inductance, the electric current in the inductance can continual continuous stream mistake.As long as the dutycycle of controlling and driving mechanism coil electrify time (ratio of conduction time and no power time in recurrence interval), just can regulating winding in the size of electric current.
According to above-mentioned principle, an IGBT (i.e. VT1 among the figure) is as the copped wave pipe, exactly be used for being responsible for to the driving mechanism coil electricity or cut off the on-off element of its electric current.As long as the dutycycle of its turn-on and turn-off of control just can be regulated driving mechanism coil current size.Certainly, as seen from Figure 1, when coil needed given certain electric current, the 2nd IGBT (i.e. VT2 among the figure) also must conducting just can make coil have electric current to pass through.
As shown in Figure 2, the current waveform of driving mechanism coil in the new embodiment is with the output waveform synoptic diagram of IGBT.Followingly will further introduce the principle of work of driving circuit among the present invention in conjunction with Fig. 2.
Shown in Fig. 2 (a), it expects needed current waveform for the driving mechanism coil.Arrive t2 in the time at t1, the electric current of driving mechanism coil is I1; Arrive t3 in the time at t2, the coil current of driving mechanism coil is I2.In order to make coil current reach bigger electric current I 1 in the time to t2 at t1, then regulate the dutycycle that the IGBT as the copped wave pipe opens and turn-offs, make it reach load current value I1, this moment, dutycycle was bigger; For the electric current that makes the driving mechanism coil reaches less current to t3 in the time at t2, then regulate the dutycycle that an IGBT opens and turn-offs, make it reach load current value I1, this moment, dutycycle must be less, shown in figure (b).And as the 2nd IGBT (i.e. VT2 among the figure) of inversion pipe, no matter t1 to the t2 time still at t2 to t3 in the time, all conductings, the driving mechanism coil just has electric current and flows through.So the 2nd IGBT is not dispensable.From the above mentioned, by the pulse signal (obtaining) that certain mode applies particular duty cycle for an IGBT and the 2nd IGBT grid level, just can obtain the output current of specific waveforms and size by connected pulse generating unit.
Following principle of work to energy release circuit describes.As previously mentioned, if the self-induction electromotive force of driving mechanism coil can not very fast release, will cause output current rising and fall time speed slow excessively, can not adapt to the requirement of driving mechanism action.The present invention just adopts energy release circuit to discharge the self-induction electromotive force of driving mechanism coil apace.Please in conjunction with Fig. 1 and shown in Figure 2, need electric current to be increased to I1 by zero constantly at t1 with the speed of maximum, only need open copped wave pipe VT1 and two IGBT pipes of inversion pipe VT2 with the dutycycle of maximum, electric current just can be with the speed of the maximum I1 that climbs like this.Afterwards, with certain dutycycle electric current being maintained I1 gets final product.And at t3 constantly, electric current need be reduced to zero with the speed of maximum.This just must discharge driving mechanism self-induction of loop electromotive force with the fastest speed.The self-induction electromotive force energy of drive coil is discharged on the capacitor C 3 by VD1 and VD2.Arrive t3 in the time at t1, electric current, flows into from the driving mechanism coil electrode behind copped wave pipe VT1 from the power positive source, then flows out from its negative pole, flow back into power cathode again behind inversion pipe VT2.At t3 constantly, need make the driving mechanism coil current drop to zero with the fastest speed from I2, this moment, VT1 and VT2 closed simultaneously, the self-induction electromotive force that the driving mechanism coil is produced will stop coil current to descend, be the self-induction electromotive force that produces of driving mechanism coil negative pole for just, the self-induction electromotive force that coil electrode produces is for bearing.At this moment, because VT1 and VT2 have closed simultaneously, the self-induction electromotive force of generation will flow on the positive pole of capacitor C 3 by VD1, flow back into the positive pole of driving mechanism coil again through VD2 from the negative pole of capacitor C 3.Like this, apace the self-induction electromotive force energy of driving mechanism coil is discharged in the capacitor C 3 and has gone.Can discharge the self-induction electromotive force energy of driving mechanism soon in this way.
In addition, because the driving mechanism self-induction electromotive force often can reach the several times of power supply even last ten times, or the spike in the electrical network often surpassed withstand voltage that the IGBT pipe can bear, and can produce damage even damages IGBT like this.Therefore first holding circuit and second holding circuit promptly can be used to IGBT is protected among the present invention.Among Fig. 1, in first holding circuit by being connected between the collector and emitter of an IGBT after R1 and the C1 series connection.Because the voltage at electric capacity two ends can not suddenly change, therefore limited the too fast rising of voltage between the IGBT collector and emitter, thereby protected an IGBT.The second holding circuit role is identical.
To sum up, implement the embodiment of the invention, have following beneficial effect:
Because IGBT is full control elements, can simplify the current regulation control circuit with it as driving element, and improved the reliability of circuit, and reduced the overall volume of control rod control system equipment, make identical electrical building can hold more rack to adapt to the requirement of bigger reactor type.。
Owing to adopted unique energy release circuit, can allow the self-induction electromotive force of driving mechanism coil pass through this energy release circuit snap-out release, improved the rising and the fall off rate of electric current, thereby made the driving mechanism action rapider.
Employing pulse-width modulation PWM mode is regulated the output current on the described driving mechanism coil, can make current ripples littler.
Above disclosed is a kind of preferred embodiment of the present invention only, can not limit the present invention's interest field certainly with this, and therefore the equivalent variations of doing according to claim of the present invention still belongs to the scope that the present invention is contained.
Claims (6)
1. the control rod control system driving circuit based on IGBT is characterized in that, comprising:
Three-plase half wave rectifier circuit;
The one IGBT, its collector links to each other with the cathode output end of described three-plase half wave rectifier circuit;
The 2nd IGBT, its emitter connects three-plase half wave rectifier circuit ground;
The driving mechanism coil, its positive pole links to each other with the emitter of a described IGBT, and its negative pole links to each other with the collector of the 2nd IGBT;
The grid of the grid of a described IGBT and the 2nd IGBT all links to each other with pulse generating unit.
2. driving circuit as claimed in claim 1 is characterized in that, further comprises energy release circuit, and described energy release circuit comprises:
Filter capacitor C3, its positive pole links to each other with the cathode output end of described three-plase half wave rectifier circuit, and its negative pole links to each other with the emitter of described the 2nd IGBT;
The first diode VD1, its positive pole links to each other with the negative pole of described driving mechanism coil, and its negative pole links to each other with the positive pole of described filter capacitor C3;
The second diode VD2, its negative pole links to each other with the positive pole of described driving mechanism coil, and its positive pole links to each other with the negative pole of described filter capacitor C3.
3. driving circuit as claimed in claim 1 or 2 is characterized in that, further comprises:
First holding circuit comprises first resistance R 1 and first capacitor C 1 of mutual series connection, and described first holding circuit is serially connected between the collector and emitter of a described IGBT;
Second holding circuit comprises second resistance R 2 and second capacitor C 2 of mutual series connection, and described second holding circuit is serially connected between the collector and emitter of described the 2nd IGBT.
4. driving circuit as claimed in claim 3 is characterized in that, further comprises:
Being serially connected in being used between the grid of a described IGBT and the emitter prevents that a described IGBT grid is unsettled and is subject to disturb and produces the 3rd resistance R 3 of misoperation;
Being serially connected in being used between the grid of described the 2nd IGBT and the emitter prevents that described the 2nd IGBT grid is unsettled and is subject to disturb and produces the 4th resistance R 4 of misoperation.
5. driving circuit as claimed in claim 4 is characterized in that, a described IGBT is the copped wave pipe; Described the 2nd IGBT is the inversion pipe.
6. driving circuit as claimed in claim 5 is characterized in that, each pulse generating unit that links to each other with the grid of the grid of a described IGBT and the 2nd IGBT is the pulse-width modulation PWM circuit.
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| CN2010105020342A CN102103894B (en) | 2010-09-30 | 2010-09-30 | IGBT (insulated gate bipolar transistor) based drive circuit of control rod control system |
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| CN2010105020342A CN102103894B (en) | 2010-09-30 | 2010-09-30 | IGBT (insulated gate bipolar transistor) based drive circuit of control rod control system |
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| CN102103894B CN102103894B (en) | 2013-05-08 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104332186A (en) * | 2013-07-22 | 2015-02-04 | 中国核动力研究设计院 | Reactor safe shutdown method |
| CN104616705A (en) * | 2015-01-09 | 2015-05-13 | 中科华核电技术研究院有限公司 | Control system for reactor control rods |
| CN105551543A (en) * | 2016-01-15 | 2016-05-04 | 中广核工程有限公司 | Rod control and rod position system for nuclear power station and fault diagnosis method of rod control and rod position system |
| CN106128519A (en) * | 2016-06-28 | 2016-11-16 | 上海发电设备成套设计研究院 | A kind of nuclear power control rod driving system and method |
| CN107276488A (en) * | 2017-06-02 | 2017-10-20 | 江苏万邦微电子有限公司 | A kind of high-low voltage power source drive circuit |
| CN110120269A (en) * | 2019-05-29 | 2019-08-13 | 中国核动力研究设计院 | One kind effectively eliminating the extended shutdown design method of nuclear power plant's reactor rod drop time |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108900106B (en) * | 2018-07-06 | 2019-12-10 | 中国核动力研究设计院 | Method for eliminating current fluctuation of control rod driving mechanism power supply device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20010076545A (en) * | 2000-01-26 | 2001-08-16 | 이종훈 | Circuit for controlling power of the CEDM in a way of DC chopper in Nuclear Power Plant |
| CN1822238A (en) * | 2006-01-10 | 2006-08-23 | 上海浦核科技有限公司 | Driving circuit for nuclear power station reactor control stick |
| CN101840741A (en) * | 2010-05-31 | 2010-09-22 | 中国核动力研究设计院 | Principal current controller of rod position measuring system in nuclear power station in the manner of pulse-width modulation closed loop feedback regulation |
| CN201853502U (en) * | 2010-09-30 | 2011-06-01 | 中科华核电技术研究院有限公司 | Control rod control system driving circuit based on IGBT (insulated gate bipolar transistor) |
-
2010
- 2010-09-30 CN CN2010105020342A patent/CN102103894B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20010076545A (en) * | 2000-01-26 | 2001-08-16 | 이종훈 | Circuit for controlling power of the CEDM in a way of DC chopper in Nuclear Power Plant |
| CN1822238A (en) * | 2006-01-10 | 2006-08-23 | 上海浦核科技有限公司 | Driving circuit for nuclear power station reactor control stick |
| CN101840741A (en) * | 2010-05-31 | 2010-09-22 | 中国核动力研究设计院 | Principal current controller of rod position measuring system in nuclear power station in the manner of pulse-width modulation closed loop feedback regulation |
| CN201853502U (en) * | 2010-09-30 | 2011-06-01 | 中科华核电技术研究院有限公司 | Control rod control system driving circuit based on IGBT (insulated gate bipolar transistor) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104332186A (en) * | 2013-07-22 | 2015-02-04 | 中国核动力研究设计院 | Reactor safe shutdown method |
| CN104616705A (en) * | 2015-01-09 | 2015-05-13 | 中科华核电技术研究院有限公司 | Control system for reactor control rods |
| WO2016110171A1 (en) * | 2015-01-09 | 2016-07-14 | 中广核研究院有限公司 | Reactor control rod control system |
| CN104616705B (en) * | 2015-01-09 | 2017-08-29 | 中广核研究院有限公司 | Reactor control rod control system |
| CN105551543A (en) * | 2016-01-15 | 2016-05-04 | 中广核工程有限公司 | Rod control and rod position system for nuclear power station and fault diagnosis method of rod control and rod position system |
| CN105551543B (en) * | 2016-01-15 | 2018-04-03 | 中广核工程有限公司 | A kind of rod control and rod position system and its method for diagnosing faults for nuclear power station |
| CN106128519A (en) * | 2016-06-28 | 2016-11-16 | 上海发电设备成套设计研究院 | A kind of nuclear power control rod driving system and method |
| CN107276488A (en) * | 2017-06-02 | 2017-10-20 | 江苏万邦微电子有限公司 | A kind of high-low voltage power source drive circuit |
| CN110120269A (en) * | 2019-05-29 | 2019-08-13 | 中国核动力研究设计院 | One kind effectively eliminating the extended shutdown design method of nuclear power plant's reactor rod drop time |
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| CN102103894B (en) | 2013-05-08 |
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Address after: 518000 Guangdong province Futian District Shangbu Road West of the city of Shenzhen Shenzhen science and technology building 15 layer (1502-1504, 1506) Patentee after: CHINA NUCLEAR POWER TECHNOLOGY RESEARCH INSTITUTE Patentee after: China General Nuclear Power Corporation Address before: 518000 Guangdong city of Shenzhen province Futian District science and technology building, Shangbu Road 15 Patentee before: Zhongkehua Nuclear Power Technology Institute Co., Ltd. Patentee before: China Guangdong Nuclear Power Group Co., Ltd. |