CN103400615B - Rod position indicator - Google Patents
Rod position indicator Download PDFInfo
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- CN103400615B CN103400615B CN201310360387.7A CN201310360387A CN103400615B CN 103400615 B CN103400615 B CN 103400615B CN 201310360387 A CN201310360387 A CN 201310360387A CN 103400615 B CN103400615 B CN 103400615B
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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
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- 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
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Abstract
The invention discloses a kind of rod position indicator, it comprises primary coil, the first secondary coil, signaling conversion circuit and processor; Primary coil is installed along the excellent stroke sleeve pipe of the drive rod of the measured CRDM of parcel; The first secondary coil comprises n discrete coil, is socketed in the periphery of primary coil, and n discrete coil is divided at least m group coil; Signaling conversion circuit detects for the electric quantity signal of each the group coil to m group coil, and electric quantity signal is encoded to binary code; Processor, according to binary code corresponding to m group coil and the spacing of n discrete coil, calculates the travel position of measured control rod. The present invention's rod position indicator can be used in the travel position of measuring control rod, and certainty of measurement is high and simple in structure.
Description
Technical field
The invention belongs to nuclear reactor equipment field, more particularly, the present invention relates to a kind of rod position indicator.
Background technology
CRDM (ControlRodDriveMechanism is called for short CRDM) is a kind of step-by-step movementHoisting mechanism, its lower end is connected with control rod assembly in pressurized water reactor, be used for making control rod assembly heapCore is mentioned, is inserted or keeps in position, with the control of realization response. Each control rod assemblyTo be operated by independent CRDM.
Because CRDM is as step-type hoisting mechanism, the control rod assembly that it drives is that to realize setting-out anti-Should pile the important mechanism of startup, power adjusting, safe shutdown and breakdown. Therefore need reactor controlRod assembly processed residing axial location in reactor core is measured, thus leading-in rod position indicator (RodPositionIndicator, is called for short RPI).
Because control rod assembly in pressurized water reactor is in the pressure vessel of HTHP, its residing positionCan only indirectly measure, the position of the drive-rod part of the CRDM being connected with control rod assembly by measurement,Convert the position of control rod assembly in reactor core to.
The measuring principle of RPI is to utilize electromagnetic induction principle, by driving of the CRDM being connected with control rod assemblyThe mechanical displacement of lever parts converts electric weight to, after electric quantity signal is processed, converts visible reality toPosition.
Referring to Fig. 1, it is the schematic diagram of the rod position indicator in correlation technique. RPI is by along CRDM stroke sideThe discrete coil composition of installing to sleeve pipe, comprises 24 A group coils and 24 B group coil compositions. 48The arrangement mode that discontinuous coil adopts is: from the bottom of RPI inner barrel, odd number coil is A group lineCircle; Even number coil is B group coil. A group coil and the independent wiring respectively of B group coil, in RPI on the same groupEach coil input end parallel connection, the output of each coil will provide output signal to enter comparator, comparatorThe signal of output is input in data cabinet through stube cable, and converts these signals to 5 in data cabinetGRAY code (BinaryGrayCode, binary system Gray code are called for short Gray code) signal.
Adjacent two coils interval 95.25mm on RPI inner barrel in A group coil and B group coil, correspondenceIn 6 machinery steps of CRDM. Therefore, the resolution ratio of single group rod position indicator is ± 6 steps, is called half precision;If 2 groups of rod position indicators combine and will obtain resolution ratio ± 3 step of full precision.
But, the coding scheme complexity that above-mentioned rod position indicator adopts is high to manufacture process requirement.
Summary of the invention
Goal of the invention of the present invention is: a kind of rod position indicator is provided, can be used in the row of measuring control rodJourney position, certainty of measurement is high, and simple in structure.
In order to realize foregoing invention object, the invention provides a kind of rod position indicator, it comprise primary coil,The first secondary coil, signaling conversion circuit and processor;
Described primary coil is along the excellent stroke sleeve pipe peace of the drive rod of the measured CRDM of parcelDress, the input tap of described primary coil connects positive source, and the output tap of described primary coil connects electricitySource negative pole;
Described the first secondary coil comprises n discrete coil, and according to the order by the 1st coil to the n coilNumber be in turn socketed in the periphery of described primary coil, between described n discrete coil and described primary coilBe provided with separation layer; N is integer, and n >=31;
Described n discrete coil is divided at least m group coil, the i group coil in described m group coilThat in described n discrete coil, sequence number adds 2i-1After can be by 2iThe coil of dividing exactly, m and i are integer, and m >=5,1≤i≤m; Coil in each group coil is connected in series successively according to ascending sequence number, and adjacentTwo coil reversal connections;
Described signaling conversion circuit is examined for the electric quantity signal of each the group coil to described m group coilSurvey; In the time that the electric quantity signal of a certain group of coil is more than or equal to threshold value, by the electric weight of one group of coil of correspondenceSignal coding is binary code " 1 "; In the time that the electric quantity signal of a certain group of coil is less than threshold value, by correspondenceThe electric quantity signal of one group of coil is encoded to binary code " 0 ";
Described processor is used for the binary code corresponding according to described m group coil and described n discrete coilSpacing, calculates the travel position of described measured CRDM.
One as the present invention's rod position indicator is improved, and described rod position indicator also comprises second subprime coil;
Described second subprime coil comprises x discrete coil, described in described x discrete coil is positioned at for the first timeOn the bearing of trend of level coil, and according to described in being in turn socketed in by the sequence number of the 1st coil to the x coilThe periphery of primary coil, is provided with separation layer between described x discrete coil and described primary coil; X is wholeNumber, and x >=4;
Described x discrete coil is divided at least y group coil, and the j group coil in described y group coil isIn described x discrete coil, sequence number adds 2j-1After can be by 2jThe coil of dividing exactly, y and j are integer, and y >=3,1≤j≤y; Coil in each group coil is connected in series successively, and two adjacent coil reversal connections;
Described signaling conversion circuit also carries out for the electric quantity signal of each the group coil to described y group coilDetect; In the time that the electric quantity signal of a certain group of coil is more than or equal to threshold value, by the electricity of one group of coil of correspondenceAmount Signal coding is binary code " 1 "; In the time that the electric quantity signal of a certain group of coil is less than threshold value, by correspondenceThe electric quantity signal of one group of coil be encoded to binary code " 0 ";
Described processor is also for binary code and described x the discrete coil corresponding according to described y group coilSpacing, calculate the travel position of described measured CRDM.
One as the present invention's rod position indicator is improved, the discrete coil of the n in described the first secondary coilIn adjacent windings between spacing and the adjacent windings in x in described second subprime coil discrete coilBetween spacing be L, L >=80mm.
Rod position provided by the invention indicator can be used in the travel position of measuring control rod, certainty of measurement high andSimple in structure. In addition, the coding scheme of rod position indicator is simple, when measured CRDMWhen stroke increases, only need to increase secondary coil number and coding figure place, can be adapted to long distance measuring,Meet engineering application demand.
Brief description of the drawings
Below in conjunction with the drawings and specific embodiments, the present invention's rod position indicator and useful technique effect thereof are enteredRow describes in detail, wherein:
Fig. 1 is the schematic diagram of rod position indicator.
Fig. 2 is the structural representation of an embodiment of rod provided by the invention position indicator.
Fig. 3 is the schematic diagram of the first embodiment of rod provided by the invention position indicator.
Fig. 4 is the circuit structure diagram of the rod position indicator shown in Fig. 3.
Fig. 5 is the schematic diagram of the second embodiment of rod provided by the invention position indicator.
Fig. 6 is the schematic diagram of the 3rd embodiment of rod provided by the invention position indicator.
Fig. 7 is the circuit structure diagram of the rod position indicator shown in Fig. 6.
Detailed description of the invention
In order to make, goal of the invention of the present invention, technical scheme and useful technique effect are more clear to be understood, belowBy reference to the accompanying drawings and detailed description of the invention, the present invention is further elaborated. Should be understood that, thisThe detailed description of the invention of describing in description is only used to explain the present invention, is not intended to limit the present invention.
Referring to Fig. 2, it is the structural representation of an embodiment of the present invention's rod position indicator.
Description of symbols in Fig. 2 is as follows: 1-pressure vessels top cover, and 2-drive rod, 3-rod stroke sleeve pipe, at the beginning of 4-Level coil, 5-secondary coil (comprising multiple discrete coils), 61-top bucking coil, 62-bottom bucking coil,7-promotes coil, 8-moving coil, 9-fixed coil.
Wherein, drive rod 2, excellent stroke sleeve pipe 3, lifting coil 7, moving coil 8 and fixed coil 9 belong toParts in CRDM CRDM, primary coil 4, secondary coil 5, top bucking coil61 and bottom compensating line 62 belong to the parts in the indicator RPI of rod position.
The embodiment of the present invention provides a kind of rod position indicator, it comprise primary coil, the first secondary coil,Signaling conversion circuit and processor;
Primary coil is installed along the excellent stroke sleeve pipe of the drive rod of the measured CRDM of parcel,The input tap of primary coil connects positive source, and the output tap of primary coil connects power cathode;
The first secondary coil comprises n discrete coil, and according to being complied with by the sequence number of the 1st coil to the n coilBe socketed in the periphery of primary coil inferiorly, between the individual discrete coil of n and primary coil, be provided with separation layer; N isInteger, and n >=31;
N discrete coil is divided at least m group coil, and the i group coil in m group coil is that n is individual discreteIn coil, sequence number adds 2i-1After can be by 2iThe coil of dividing exactly, m and i are integer, and m >=5,1≤i≤m; OftenCoil in one group of coil is connected in series successively according to ascending sequence number, and two adjacent coil reversal connections;
Signaling conversion circuit detects for the electric quantity signal of each the group coil to m group coil; When certainWhen the electric quantity signal of one group of coil is more than or equal to threshold value, by the electric quantity signal coding of one group of coil of correspondenceFor binary code " 1 "; In the time that the electric quantity signal of a certain group of coil is less than threshold value, by one group of coil of correspondenceElectric quantity signal be encoded to binary code " 0 ";
Processor, for according to binary code corresponding to m group coil and the spacing of n discrete coil, calculates quiltThe travel position of the CRDM of measuring.
It should be noted that, in above-mentioned m group coil, belong to two adjacent lines in same group of coilCircle reversal connection, refers to: two adjacent coils are in the time of series connection, and Same Name of Ends is connected.
Below in conjunction with Fig. 3, Fig. 4 and Fig. 5, structure and the work of the rod position indicator that the embodiment of the present invention is providedBe elaborated as principle.
Referring to Fig. 3, it is the schematic diagram of the first embodiment of rod provided by the invention position indicator.
The first embodiment provides a kind of rod position indicator, and the first secondary coil wherein comprises 46 discrete coils;46 discrete coils are divided into 6 groups of coils, specific as follows:
First group of coil comprise the 1st coil, the 3rd coil, the 5th coil, the 7th coil, the 9th coil,The 11st coil, the 13rd coil, the 15th coil, the 17th coil, the 19th coil, the 21st coil,23 coils, the 25th coil, the 27th coil, the 29th coil, the 31st coil, the 33rd coil, the 35thCoil, the 37th coil, the 39th coil, the 41st coil, the 43rd coil and the 45th coil; First groupCoil in coil is that sequence number adds 20After can be by 21The coil of dividing exactly.
Wherein, the input tap of the 1st coil is the first test side, and the output tap of the 1st coil connects the 3rdThe output tap of coil, the input tap of the 3rd coil connects the input tap of the 5th coil, the 5th coilOutput tap connects the output tap of the 7th coil, and the input tap of the 7th coil connects the input of the 9th coilTap, the output tap of the 9th coil connects the output tap of the 11st coil, the input tap of the 11st coilConnect the input tap of the 13rd coil, the output tap of the 13rd coil connects the output tap of the 15th coil,The input tap of the 15th coil connects the input tap of the 17th coil, and the output tap of the 17th coil connects theThe output tap of 19 coils, the input tap of the 19th coil connects the input tap of the 21st coil, the 21st lineThe output tap of circle connects the output tap of the 23rd coil, and the input tap of the 23rd coil connects the 25th coilInput tap, the output tap of the 25th coil connects the output tap of the 27th coil, the 27th coil defeatedEnter the input tap that tap connects the 29th coil, the output tap of the 29th coil connects the output of the 31st coilTap, the input tap of the 31st coil connects the input tap of the 33rd coil, the output tap of the 33rd coilConnect the output tap of the 35th coil, the input tap of the 35th coil connects the input tap of the 37th coil,The output tap of the 37th coil connects the output tap of the 39th coil, and the input tap of the 39th coil connects theThe input tap of 41 coils, the output tap of the 41st coil connects the output tap of the 43rd coil, the 43rd lineThe input tap of circle connects the input tap of the 45th coil, the output tap ground connection of the 45th coil.
Second group of coil comprise the 2nd coil, the 6th coil, the 10th coil, the 14th coil, the 18th coil,The 22nd coil, the 26th coil, the 30th coil, the 34th coil, the 38th coil, the 42nd coil and46 coils; The coil in second group of coil is that sequence number adds 21After can be by 22The coil of dividing exactly.
Wherein, the input tap of the 2nd coil is the second test side, and the output tap of the 2nd coil connects the 6thThe output tap of coil, the input tap of the 6th coil connects the input tap of the 10th coil, the 10th coilOutput tap connect the output tap of the 14th coil, the input tap of the 14th coil connects the 18th coilInput tap, the output tap of the 18th coil connects the output tap of the 22nd coil, the input of the 22nd coilTap connects the input tap of the 26th coil, and the output tap of the 26th coil connects the output of the 30th coil and takes outHead, the input tap of the 30th coil connects the input tap of the 34th coil, and the output tap of the 34th coil connectsConnect the output tap of the 38th coil, the input tap of the 38th coil connects the input tap of 42 coils, the 42ndThe output tap of coil connects the output tap of the 46th coil, the input tap ground connection of the 46th coil.
The 3rd group of coil comprises the 4th coil, the 12nd coil, the 20th coil, the 28th coil, the 36th lineCircle and the 44th coil; The coil in the 3rd group of coil is that sequence number adds 22After can be by 23The coil of dividing exactly.
Wherein, the input tap of the 4th coil is the 3rd test side, and the output tap of the 4th coil connects the 12ndThe output tap of coil, the input tap of the 12nd coil connects the input tap of the 20th coil, the 20th coilOutput tap connect the output tap of the 28th coil, the input tap of the 28th coil connects the 36th coilInput tap, the output tap of the 36th coil connects the output tap of the 44th coil, the input of the 44th coilTap ground connection.
The 4th group of coil comprises the 8th coil, the 24th coil and the 40th coil; I.e. line in the 4th group of coilCircle is that sequence number adds 23After can be by 24The coil of dividing exactly.
Wherein, the input tap of the 8th coil is the 4th test side, and the output tap of the 8th coil connects the 24thThe output tap of coil, the input tap of the 24th coil connects the input tap of the 40th coil, the 40th coilOutput tap ground connection.
The 5th group of coil comprises the 16th coil; The coil in the 5th group of coil is that sequence number adds 24After can be by 25The coil of dividing exactly. Wherein, the input tap of the 16th coil is the 5th test side, and the output of the 16th coil is taken outGround connection.
The 6th group of coil comprises the 32nd coil; The coil in the 6th group of coil is that sequence number adds 25After can be by 26The coil of dividing exactly. Wherein, the input tap of the 32nd coil is the 6th test side, and the output of the 32nd coil is taken outGround connection.
Referring to Fig. 4, it is the circuit structure diagram of the rod position indicator shown in Fig. 3.
Signaling conversion circuit comprise the first converting unit 101, the second converting unit 102, the 3rd converting unit 103,The 4th converting unit 104, the 5th converting unit 105 and the 6th converting unit 106, specific as follows:
The first converting unit 101, for detection of the electric quantity signal of the first test side S1, when electric quantity signal is greater thanOr while equaling threshold value, the electric quantity signal of first group of coil is encoded to binary code " 1 "; Work as electric quantity signalWhile being less than threshold value, the electric quantity signal of first group of coil is encoded to binary code " 0 ";
The second converting unit 102, for detection of the electric quantity signal of the second test side S2, when electric quantity signal is greater thanOr while equaling threshold value, the electric quantity signal of second group of coil is encoded to binary code " 1 "; Work as electric quantity signalWhile being less than threshold value, the electric quantity signal of second group of coil is encoded to binary code " 0 ";
The 3rd converting unit 103, for detection of the electric quantity signal of the 3rd test side S3, when electric quantity signal is greater thanOr while equaling threshold value, the electric quantity signal of the 3rd group of coil is encoded to binary code " 1 "; Work as electric quantity signalWhile being less than threshold value, the electric quantity signal of the 3rd group of coil is encoded to binary code " 0 ";
The 4th converting unit 104, for detection of the electric quantity signal of the 4th test side S4, when electric quantity signal is greater thanOr while equaling threshold value, the electric quantity signal of the 4th group of coil is encoded to binary code " 1 "; Work as electric quantity signalWhile being less than threshold value, the electric quantity signal of the 4th group of coil is encoded to binary code " 0 ";
The 5th converting unit 105, for detection of the electric quantity signal of the 5th test side S5, when electric quantity signal is greater thanOr while equaling threshold value, the electric quantity signal of the 5th group of coil is encoded to binary code " 1 "; Work as electric quantity signalWhile being less than threshold value, the electric quantity signal of the 5th group of coil is encoded to binary code " 0 ";
The 6th converting unit 106, for detection of the electric quantity signal of the 6th test side S6, when electric quantity signal is greater thanOr while equaling threshold value, the electric quantity signal of the 6th group of coil is encoded to binary code " 1 "; Work as electric quantity signalWhile being less than threshold value, the electric quantity signal of the 6th group of coil is encoded to binary code " 0 ".
Below only taking first group of coil (comprise sequence number as 1,3,5,7,9,11,13,15,17,19,21,23,25,27,29,31,33,35,37,39,41,43,45 coil) be example, to thisBright coding method is elaborated:
In the time that the drive rod of CRDM runs to the 1st coil, the electric quantity signal of first group of coil is largeIn threshold value, corresponding binary code is " 1 "; When the drive rod of CRDM runs to the 2nd lineWhen circle, because the 2nd coil does not belong to first group of coil, therefore the electric quantity signal of first group of coil remains unchanged,Corresponding binary code is " 1 "; In the time that the drive rod of CRDM runs to the 3rd coil, due toThe 1st coil and the 3rd coil reversal connection, therefore the electric quantity signal of first group of coil reduces, and is less than threshold value, rightThe binary code of answering is " 0 "; In the time that the drive rod of CRDM runs to the 4th coil, due to the 4thCoil does not belong to first group of coil, and therefore the electric quantity signal of first group of coil remains unchanged, corresponding binary systemCode is " 0 "; In the time that the drive rod of CRDM runs to the 5th coil, the electric weight of first group of coilSignal raises, and is greater than threshold value, and corresponding binary code is " 1 "; By that analogy.
It should be noted that, second and third, the coding principle of the electric quantity signal of four, five and six groups of coils, withThe coding principle of the electric quantity signal of above-mentioned first group of coil is identical, is not elaborated at this.
The rod position indicator that the present embodiment provides when measuring the travel position of control rod, drives at control rodIn the running of the drive rod of mechanism, the binary code that signaling conversion circuit is exported is as shown in table 1.
Table 1
As can be seen from Table 1, in the running of the drive rod of CRDM, different strokesPosition is corresponding to different binary codes. For example,, when the drive rod of CRDM runs to the 1st lineWhen circle, the 6th group of coil, the 5th group of coil, the 4th group of coil, the 3rd group of coil, second group of coil andOne group of binary code corresponding to coil is respectively 0,0,0,0,0,1; When the driving of CRDMWhen bar runs to the 2nd coil, the 6th group of coil, the 5th group of coil, the 4th group of coil, the 3rd group of coil,Second group of coil and first group of binary code corresponding to coil are respectively 0,0,0,0,1,1; Work as control rodWhen the drive rod of driving mechanism runs to the 3rd coil, the 6th group of coil, the 5th group of coil, the 4th group of coil,The 3rd group of coil, second group of coil and first group of binary code corresponding to coil be respectively 0,0,0,0,1,0。
Further, as shown in Figure 4,6 binary codes after conversion are sent to place by signaling conversion circuitReason device 20, processor 20 can calculate measured according to the spacing of described binary code and the first secondary coilThe travel position of CRDM.
Referring to Fig. 5, it is the schematic diagram of the second embodiment of rod provided by the invention position indicator.
The second embodiment provides a kind of rod position indicator, and the first secondary coil wherein comprises 35 discrete coils;Described 35 discrete coils are divided into 6 groups of coils, specific as follows:
First group of coil comprise the 1st coil, the 3rd coil, the 5th coil, the 7th coil, the 9th coil,The 11st coil, the 13rd coil, the 15th coil, the 17th coil, the 19th coil, the 21st coil,23 coils, the 25th coil, the 27th coil, the 29th coil, the 31st coil, the 33rd coil and the 35thCoil;
Wherein, the input tap of the 1st coil is the first test side, and the output tap of the 1st coil connects the 3rdThe output tap of coil, the input tap of the 3rd coil connects the input tap of the 5th coil, the 5th coilOutput tap connects the output tap of the 7th coil, and the input tap of the 7th coil connects the input of the 9th coilTap, the output tap of the 9th coil connects the output tap of the 11st coil, the input tap of the 11st coilConnect the input tap of the 13rd coil, the output tap of the 13rd coil connects the output tap of the 15th coil,The input tap of the 15th coil connects the input tap of the 17th coil, and the output tap of the 17th coil connects theThe output tap of 19 coils, the input tap of the 19th coil connects the input tap of the 21st coil, the 21st lineThe output tap of circle connects the output tap of the 23rd coil, and the input tap of the 23rd coil connects the 25th coilInput tap, the output tap of the 25th coil connects the output tap of the 27th coil, the 27th coil defeatedEnter the input tap that tap connects the 29th coil, the output tap of the 29th coil connects the output of the 31st coilTap, the input tap of the 31st coil connects the input tap of the 33rd coil, the output tap of the 33rd coilConnect the output tap of the 35th coil, the input tap ground connection of the 35th coil.
Second group of coil comprise the 2nd coil, the 6th coil, the 10th coil, the 14th coil, the 18th coil,The 22nd coil, the 26th coil, the 30th coil and the 34th coil;
Wherein, the input tap of the 2nd coil is the second test side, and the output tap of the 2nd coil connects the 6thThe output tap of coil, the input tap of the 6th coil connects the input tap of the 10th coil, the 10th coilOutput tap connect the output tap of the 14th coil, the input tap of the 14th coil connects the 18th coilInput tap, the output tap of the 18th coil connects the output tap of the 22nd coil, the input of the 22nd coilTap connects the input tap of the 26th coil, and the output tap of the 26th coil connects the output of the 30th coil and takes outHead, the input tap of the 30th coil connects the input tap of the 34th coil, and the output tap of the 34th coil connectsGround.
The 3rd group of coil comprises the 4th coil, the 12nd coil, the 20th coil and the 28th coil;
Wherein, the input tap of the 4th coil is the 3rd test side, and the output tap of the 4th coil connects the 12ndThe output tap of coil, the input tap of the 12nd coil connects the input tap of the 20th coil, the 20th coilOutput tap connect the output tap of the 28th coil, the input tap ground connection of the 28th coil.
The 4th group of coil comprises the 8th coil and the 24th coil;
Wherein, the input tap of the 8th coil is the 4th test side, and the output tap of the 8th coil connects the 24thThe output tap of coil, the input tap ground connection of the 24th coil.
The 5th group of coil comprises the 16th coil; Wherein, the input tap of the 16th coil is the 5th test side,The output tap ground connection of the 16th coil.
The 6th group of coil comprises the 32nd coil; Wherein, the input tap of the 32nd coil is the 6th test side,The output tap ground connection of the 32nd coil.
The circuit theory diagrams of the rod position indicator that the present embodiment provides as shown in Figure 4, its operation principle and above-mentionedThe first embodiment is identical, no longer describes in detail at this.
The rod position indicator that the present embodiment provides when measuring the travel position of control rod, drives at control rodIn the running of the drive rod of mechanism, the binary code that signaling conversion circuit is exported is as shown in table 2.
Table 2
The present invention also provides another kind of rod position indicator, except comprising above-mentioned primary coil, the first secondary wireOutside circle, signaling conversion circuit and processor, also comprise second subprime coil.
Second subprime coil comprises x discrete coil, and x discrete coil is positioned at the extension side of the first secondary coilUpwards, and according to the periphery that is in turn socketed in primary coil by the sequence number of the 1st coil to the x coil, xBetween discrete coil and primary coil, be provided with separation layer; X is integer, and x >=4;
X discrete coil is divided at least y group coil, and the j group coil in y group coil is that x is individual discreteIn coil, sequence number adds 2j-1After can be by 2jThe coil of dividing exactly, y and j are integer, and y >=3,1≤j≤y; EachCoil in group coil is connected in series successively, and two adjacent coil reversal connections;
Signaling conversion circuit also detects for the electric quantity signal of each the group coil to y group coil; WhenWhen electric quantity signal is more than or equal to threshold value, the electric quantity signal of one group of coil of correspondence is encoded to binary code" 1 "; In the time that electric quantity signal is less than threshold value, the electric quantity signal of one group of coil of correspondence is encoded to binary systemCode " 0 ";
Processor also, for according to binary code corresponding to y group coil and the spacing of x discrete coil, calculatesThe travel position of measured CRDM.
One preferred embodiment in, the adjacent windings in n in the first secondary coil discrete coilBetween spacing and the spacing between adjacent windings in x in second subprime coil discrete coil be L,L≥80mm。
Below in conjunction with Fig. 6 and Fig. 7, structure and the operation principle of the rod position indicator to the present embodiment are carried out in detailExplanation.
Referring to Fig. 6, it is the schematic diagram of the 3rd embodiment of rod provided by the invention position indicator.
The 3rd embodiment provides a kind of rod position indicator, comprises that primary coil, the first secondary coil, signal turnChange circuit, processor and second subprime coil.
The first secondary coil wherein comprises 31 discrete coils, and 31 discrete coils are divided into 5 groups of coils,Specific as follows:
First group of coil comprise the 1st coil, the 3rd coil, the 5th coil, the 7th coil, the 9th coil,The 11st coil, the 13rd coil, the 15th coil, the 17th coil, the 19th coil, the 21st coil,23 coils, the 25th coil, the 27th coil, the 29th coil and the 31st coil;
Wherein, the input tap of the 1st coil is the first test side, and the output tap of the 1st coil connects the 3rdThe output tap of coil, the input tap of the 3rd coil connects the input tap of the 5th coil, the 5th coilOutput tap connects the output tap of the 7th coil, and the input tap of the 7th coil connects the input of the 9th coilTap, the output tap of the 9th coil connects the output tap of the 11st coil, the input tap of the 11st coilConnect the input tap of the 13rd coil, the output tap of the 13rd coil connects the output tap of the 15th coil,The input tap of the 15th coil connects the input tap of the 17th coil, and the output tap of the 17th coil connects theThe output tap of 19 coils, the input tap of the 19th coil connects the input tap of the 21st coil, the 21st lineThe output tap of circle connects the output tap of the 23rd coil, and the input tap of the 23rd coil connects the 25th coilInput tap, the output tap of the 25th coil connects the output tap of the 27th coil, the 27th coil defeatedEnter the input tap that tap connects the 29th coil, the output tap of the 29th coil connects the output of the 31st coilTap, the input tap ground connection of the 31st coil;
Second group of coil comprise the 2nd coil, the 6th coil, the 10th coil, the 14th coil, the 18th coil,The 22nd coil, the 26th coil and the 30th coil;
Wherein, the input tap of the 2nd coil is the second test side, and the output tap of the 2nd coil connects the 6thThe output tap of coil, the input tap of the 6th coil connects the input tap of the 10th coil, the 10th coilOutput tap connect the output tap of the 14th coil, the input tap of the 14th coil connects the 18th coilInput tap, the output tap of the 18th coil connects the output tap of the 22nd coil, the input of the 22nd coilTap connects the input tap of the 26th coil, and the output tap of the 26th coil connects the output of the 30th coil and takes outHead, the input tap ground connection of the 30th coil;
The 3rd group of coil comprises the 4th coil, the 12nd coil, the 20th coil and the 28th coil;
Wherein, the input tap of the 4th coil is the 3rd test side, and the output tap of the 4th coil connects the 12ndThe output tap of coil, the input tap of the 12nd coil connects the input tap of the 20th coil, the 20th coilOutput tap connect the output tap of the 28th coil, the input tap ground connection of the 28th coil;
The 4th group of coil comprises the 8th coil and the 24th coil;
Wherein, the input tap of the 8th coil is the 4th test side, and the output tap of the 8th coil connects the 24thThe output tap of coil, the input tap ground connection of the 24th coil;
The 5th group of coil comprises the 16th coil; Wherein, the input tap of the 16th coil is the 5th test side,The output tap ground connection of the 16th coil.
Second subprime coil wherein comprises 4 discrete coils, according to the order by the 1st coil to the 4 coilsNumber be in turn socketed in the periphery of primary coil, the 1st coil and the first secondary coil in second subprime coilIn the 31st coil adjoining;
4 discrete coils in second subprime coil are divided into three groups, are respectively the 6th group of coil, the 7thGroup coil and the 8th group of coil; As follows:
The 6th group of coil comprises the 1st coil and the 3rd coil in second subprime coil; Wherein, second subprimeThe input tap of the 1st coil in coil is the 6th test side, the 1st coil in second subprime coil defeatedGo out the output tap of the 3rd coil in tap connection second subprime coil, the 3rd line in second subprime coilThe input tap ground connection of circle;
The 7th group of coil comprises the 2nd coil in second subprime coil; Wherein, the 2nd in second subprime coilThe input tap of coil is the 7th test side, the output tap ground connection of the 2nd coil in second subprime coil;
The 8th group of coil comprises the 4th coil in second subprime coil; Wherein, the 4th in second subprime coilThe input tap of coil is the 8th test side, the output tap ground connection of the 4th coil in second subprime coil.
Referring to Fig. 7, it is the circuit structure diagram of the rod position indicator shown in Fig. 6.
Signaling conversion circuit comprise the first converting unit 101, the second converting unit 102, the 3rd converting unit 103,The 4th converting unit 104, the 5th converting unit 105, the 6th converting unit 106, the 7th converting unit 107With the 8th converting unit 108, specific as follows:
The first converting unit 101, for detection of the electric quantity signal of the first test side S1, when electric quantity signal is greater thanOr while equaling threshold value, the electric quantity signal of first group of coil is encoded to binary code " 1 "; Work as electric quantity signalWhile being less than threshold value, the electric quantity signal of first group of coil is encoded to binary code " 0 ";
The second converting unit 102, for detection of the electric quantity signal of the second test side S2, when electric quantity signal is greater thanOr while equaling threshold value, the electric quantity signal of second group of coil is encoded to binary code " 1 "; Work as electric quantity signalWhile being less than threshold value, the electric quantity signal of second group of coil is encoded to binary code " 0 ";
The 3rd converting unit 103, for detection of the electric quantity signal of the 3rd test side S3, when electric quantity signal is greater thanOr while equaling threshold value, the electric quantity signal of the 3rd group of coil is encoded to binary code " 1 "; Work as electric quantity signalWhile being less than threshold value, the electric quantity signal of the 3rd group of coil is encoded to binary code " 0 ";
The 4th converting unit 104, for detection of the electric quantity signal of the 4th test side S4, when electric quantity signal is greater thanOr while equaling threshold value, the electric quantity signal of the 4th group of coil is encoded to binary code " 1 "; Work as electric quantity signalWhile being less than threshold value, the electric quantity signal of the 4th group of coil is encoded to binary code " 0 ";
The 5th converting unit 105, for detection of the electric quantity signal of the 5th test side S5, when electric quantity signal is greater thanOr while equaling threshold value, the electric quantity signal of the 5th group of coil is encoded to binary code " 1 "; Work as electric quantity signalWhile being less than threshold value, the electric quantity signal of the 5th group of coil is encoded to binary code " 0 ";
The 6th converting unit 106, for detection of the electric quantity signal of the 6th test side S6, when electric quantity signal is greater thanOr while equaling threshold value, the electric quantity signal of the 6th group of coil is encoded to binary code " 1 "; Work as electric quantity signalWhile being less than threshold value, the electric quantity signal of the 6th group of coil is encoded to binary code " 0 ";
The 7th converting unit 107, for detection of the electric quantity signal of the 7th test side S7, when electric quantity signal is greater thanOr while equaling threshold value, the electric quantity signal of the 7th group of coil is encoded to binary code " 1 "; Work as electric quantity signalWhile being less than threshold value, the electric quantity signal of the 7th group of coil is encoded to binary code " 0 ";
The 8th converting unit 108, for detection of the electric quantity signal of the 8th test side S8, when electric quantity signal is greater thanOr while equaling threshold value, the electric quantity signal of the 8th group of coil is encoded to binary code " 1 "; Work as electric quantity signalWhile being less than threshold value, the electric quantity signal of the 8th group of coil is encoded to binary code " 0 ".
The binary coding principle of the rod position indicator that the present embodiment provides and above-mentioned the first embodiment and second are in factExecute example identical, no longer describe in detail at this.
The rod position indicator that the present embodiment provides when measuring the travel position of control rod, drives at control rodIn the running of the drive rod of mechanism, the binary code that signaling conversion circuit is exported is as shown in table 3.
Table 3
Further, as shown in Figure 7,8 binary codes after conversion are sent to place by signaling conversion circuitReason device 20, processor 20 is according to the spacing of the spacing of binary code, the first secondary coil and second subprime coilCan calculate the travel position of measured CRDM.
In an optional embodiment, rod provided by the invention position indicator also comprises the first bucking coilWith the second bucking coil; The first bucking coil and the second bucking coil drive along the measured control rod of parcelThe excellent stroke sleeve pipe of the drive rod of mechanism is installed, and is respectively in the two ends of secondary coil, and establishes between primary coilBe equipped with separation layer. Top bucking coil 61 as shown in Figure 1 and bottom compensating line 62 are exactly the first compensating lineCircle and the second bucking coil. In the middle of concrete enforcement, when primary coil breaks down, can be by the first compensationCoil and the second bucking coil access power supply, substitute primary coil work, thereby ensure reactor control rod groupThe safety of part.
It should be noted that, the embodiment of the present invention is only that the rod position of 6 binary codes and 8 binary codes refers toShow that device is that example describes. In the time of concrete application, can correspondingly increase or reduce the coil in secondary coilNumber, and correspondingly increase or reduce the figure place of binary code, thereby adapt to different CRDMsHaul distance, meet engineering application requirements.
Rod provided by the invention position indicator can be used in the travel position of measuring control rod, and certainty of measurement is high,And simple in structure. In addition, the coding scheme of rod position indicator is simple, when measured CRDMStroke while increasing, only need to increase secondary coil number and coding figure place, can be adapted to long distance measuring,Meet engineering application demand.
The announcement of book and instruction according to the above description, those skilled in the art in the invention can also be to above-mentionedEmbodiment carries out suitable change and amendment. Therefore, the present invention is not limited to disclosed and described aboveDetailed description of the invention, also should fall into the guarantor of claim of the present invention to modifications and changes more of the present inventionProtect in scope. In addition,, although used some specific terms in this description, these terms are justFacilitate explanation, the present invention is not formed to any restriction.
Claims (9)
1. a rod position indicator, is characterized in that, a described rod position indicator comprises primary coil, for the first timeLevel coil, second subprime coil, signaling conversion circuit and processor;
Described primary coil is along the excellent stroke sleeve pipe peace of the drive rod of the measured CRDM of parcelDress, the input tap of described primary coil connects positive source, and the output tap of described primary coil connects electricitySource negative pole;
Described the first secondary coil comprises n discrete coil, and according to the order by the 1st coil to the n coilNumber be in turn socketed in the periphery of described primary coil, between described n discrete coil and described primary coilBe provided with separation layer; N is integer, and n >=31;
Described n discrete coil is divided at least m group coil, the i group coil in described m group coilThat in described n discrete coil, sequence number adds 2i-1After can be by 2iThe coil of dividing exactly, m and i are integer, and m >=5,1≤i≤m; Coil in each group coil is connected in series successively according to ascending sequence number, and adjacentTwo coil reversal connections;
Described second subprime coil comprises x discrete coil, described in described x discrete coil is positioned at for the first timeOn the bearing of trend of level coil, and according to described in being in turn socketed in by the sequence number of the 1st coil to the x coilThe periphery of primary coil, is provided with separation layer between described x discrete coil and described primary coil; X is wholeNumber, and x >=4;
Described x discrete coil is divided at least y group coil, and the j group coil in described y group coil isIn described x discrete coil, sequence number adds 2j-1After can be by 2jThe coil of dividing exactly, y and j are integer, and y >=3,1≤j≤y; Coil in each group coil is connected in series successively, and two adjacent coil reversal connections;
Described signaling conversion circuit is for the electric weight of each the group coil to described m group coil and y group coilSignal detects; In the time that the electric quantity signal of a certain group of coil is more than or equal to threshold value, by one group of correspondenceThe electric quantity signal of coil is encoded to binary code " 1 "; In the time that the electric quantity signal of a certain group of coil is less than threshold value,The electric quantity signal of one group of coil of correspondence is encoded to binary code " 0 ";
Described processor is used for according to described m group coil and binary code corresponding to y group coil, and described inSpacing between adjacent windings in n discrete coil and x discrete coil, calculates described measured controlThe travel position of rod drive mechanism.
2. rod according to claim 1 position indicator, is characterized in that described the first secondary coil bagDraw together 46 discrete coils; Described 46 discrete coils are divided into 6 groups of coils;
First group of coil comprise the 1st coil, the 3rd coil, the 5th coil, the 7th coil, the 9th coil,The 11st coil, the 13rd coil, the 15th coil, the 17th coil, the 19th coil, the 21st coil,23 coils, the 25th coil, the 27th coil, the 29th coil, the 31st coil, the 33rd coil, the 35thCoil, the 37th coil, the 39th coil, the 41st coil, the 43rd coil and the 45th coil;
Wherein, the input tap of the 1st coil is the first test side, and the output tap of the 1st coil connects the 3rdThe output tap of coil, the input tap of the 3rd coil connects the input tap of the 5th coil, the 5th coilOutput tap connects the output tap of the 7th coil, and the input tap of the 7th coil connects the input of the 9th coilTap, the output tap of the 9th coil connects the output tap of the 11st coil, the input tap of the 11st coilConnect the input tap of the 13rd coil, the output tap of the 13rd coil connects the output tap of the 15th coil,The input tap of the 15th coil connects the input tap of the 17th coil, and the output tap of the 17th coil connects theThe output tap of 19 coils, the input tap of the 19th coil connects the input tap of the 21st coil, the 21st lineThe output tap of circle connects the output tap of the 23rd coil, and the input tap of the 23rd coil connects the 25th coilInput tap, the output tap of the 25th coil connects the output tap of the 27th coil, the 27th coil defeatedEnter the input tap that tap connects the 29th coil, the output tap of the 29th coil connects the output of the 31st coilTap, the input tap of the 31st coil connects the input tap of the 33rd coil, the output tap of the 33rd coilConnect the output tap of the 35th coil, the input tap of the 35th coil connects the input tap of the 37th coil,The output tap of the 37th coil connects the output tap of the 39th coil, and the input tap of the 39th coil connects theThe input tap of 41 coils, the output tap of the 41st coil connects the output tap of the 43rd coil, the 43rd lineThe input tap of circle connects the input tap of the 45th coil, the output tap ground connection of the 45th coil;
Second group of coil comprise the 2nd coil, the 6th coil, the 10th coil, the 14th coil, the 18th coil,The 22nd coil, the 26th coil, the 30th coil, the 34th coil, the 38th coil, the 42nd coil and46 coils;
Wherein, the input tap of the 2nd coil is the second test side, and the output tap of the 2nd coil connects the 6thThe output tap of coil, the input tap of the 6th coil connects the input tap of the 10th coil, the 10th coilOutput tap connect the output tap of the 14th coil, the input tap of the 14th coil connects the 18th coilInput tap, the output tap of the 18th coil connects the output tap of the 22nd coil, the input of the 22nd coilTap connects the input tap of the 26th coil, and the output tap of the 26th coil connects the output of the 30th coil and takes outHead, the input tap of the 30th coil connects the input tap of the 34th coil, and the output tap of the 34th coil connectsConnect the output tap of the 38th coil, the input tap of the 38th coil connects the input tap of 42 coils, the 42ndThe output tap of coil connects the output tap of the 46th coil, the input tap ground connection of the 46th coil;
The 3rd group of coil comprises the 4th coil, the 12nd coil, the 20th coil, the 28th coil, the 36th lineCircle and the 44th coil;
Wherein, the input tap of the 4th coil is the 3rd test side, and the output tap of the 4th coil connects the 12ndThe output tap of coil, the input tap of the 12nd coil connects the input tap of the 20th coil, the 20th coilOutput tap connect the output tap of the 28th coil, the input tap of the 28th coil connects the 36th coilInput tap, the output tap of the 36th coil connects the output tap of the 44th coil, the input of the 44th coilTap ground connection;
The 4th group of coil comprises the 8th coil, the 24th coil and the 40th coil;
Wherein, the input tap of the 8th coil is the 4th test side, and the output tap of the 8th coil connects the 24thThe output tap of coil, the input tap of the 24th coil connects the input tap of the 40th coil, the 40th coilOutput tap ground connection;
The 5th group of coil comprises the 16th coil; Wherein, the input tap of the 16th coil is the 5th test side,The output tap ground connection of the 16th coil;
The 6th group of coil comprises the 32nd coil; Wherein, the input tap of the 32nd coil is the 6th test side,The output tap ground connection of the 32nd coil.
3. rod according to claim 1 position indicator, is characterized in that described the first secondary coil bagDraw together 35 discrete coils; Described 35 discrete coils are divided into 6 groups of coils;
First group of coil comprise the 1st coil, the 3rd coil, the 5th coil, the 7th coil, the 9th coil,The 11st coil, the 13rd coil, the 15th coil, the 17th coil, the 19th coil, the 21st coil,23 coils, the 25th coil, the 27th coil, the 29th coil, the 31st coil, the 33rd coil and the 35thCoil;
Wherein, the input tap of the 1st coil is the first test side, and the output tap of the 1st coil connects the 3rdThe output tap of coil, the input tap of the 3rd coil connects the input tap of the 5th coil, the 5th coilOutput tap connects the output tap of the 7th coil, and the input tap of the 7th coil connects the input of the 9th coilTap, the output tap of the 9th coil connects the output tap of the 11st coil, the input tap of the 11st coilConnect the input tap of the 13rd coil, the output tap of the 13rd coil connects the output tap of the 15th coil,The input tap of the 15th coil connects the input tap of the 17th coil, and the output tap of the 17th coil connects theThe output tap of 19 coils, the input tap of the 19th coil connects the input tap of the 21st coil, the 21st lineThe output tap of circle connects the output tap of the 23rd coil, and the input tap of the 23rd coil connects the 25th coilInput tap, the output tap of the 25th coil connects the output tap of the 27th coil, the 27th coil defeatedEnter the input tap that tap connects the 29th coil, the output tap of the 29th coil connects the output of the 31st coilTap, the input tap of the 31st coil connects the input tap of the 33rd coil, the output tap of the 33rd coilConnect the output tap of the 35th coil, the input tap ground connection of the 35th coil;
Second group of coil comprise the 2nd coil, the 6th coil, the 10th coil, the 14th coil, the 18th coil,The 22nd coil, the 26th coil, the 30th coil and the 34th coil;
Wherein, the input tap of the 2nd coil is the second test side, and the output tap of the 2nd coil connects the 6thThe output tap of coil, the input tap of the 6th coil connects the input tap of the 10th coil, the 10th coilOutput tap connect the output tap of the 14th coil, the input tap of the 14th coil connects the 18th coilInput tap, the output tap of the 18th coil connects the output tap of the 22nd coil, the input of the 22nd coilTap connects the input tap of the 26th coil, and the output tap of the 26th coil connects the output of the 30th coil and takes outHead, the input tap of the 30th coil connects the input tap of the 34th coil, and the output tap of the 34th coil connectsGround;
The 3rd group of coil comprises the 4th coil, the 12nd coil, the 20th coil and the 28th coil;
Wherein, the input tap of the 4th coil is the 3rd test side, and the output tap of the 4th coil connects the 12ndThe output tap of coil, the input tap of the 12nd coil connects the input tap of the 20th coil, the 20th coilOutput tap connect the output tap of the 28th coil, the input tap ground connection of the 28th coil;
The 4th group of coil comprises the 8th coil and the 24th coil;
Wherein, the input tap of the 8th coil is the 4th test side, and the output tap of the 8th coil connects the 24thThe output tap of coil, the input tap ground connection of the 24th coil;
The 5th group of coil comprises the 16th coil; Wherein, the input tap of the 16th coil is the 5th test side,The output tap ground connection of the 16th coil;
The 6th group of coil comprises the 32nd coil; Wherein, the input tap of the 32nd coil is the 6th test side,The output tap ground connection of the 32nd coil.
4. according to the rod position indicator described in claim 2 or 3, it is characterized in that described signal conversion electricityRoad comprises:
The first converting unit, for detection of the electric quantity signal of described the first test side, when the electricity of the first test sideWhen amount signal is more than or equal to threshold value, the electric quantity signal of described first group of coil is encoded to binary code" 1 "; In the time that the electric quantity signal of the first test side is less than threshold value, by the electric quantity signal of described first group of coilBe encoded to binary code " 0 ";
The second converting unit, for detection of the electric quantity signal of described the second test side, when the electricity of the second test sideWhen amount signal is more than or equal to threshold value, the electric quantity signal of described second group of coil is encoded to binary code" 1 "; In the time that the electric quantity signal of the second test side is less than threshold value, by the electric quantity signal of described second group of coilBe encoded to binary code " 0 ";
The 3rd converting unit, for detection of the electric quantity signal of described the 3rd test side, when the electricity of the 3rd test sideWhen amount signal is more than or equal to threshold value, the electric quantity signal of described the 3rd group of coil is encoded to binary code" 1 "; In the time that the electric quantity signal of the 3rd test side is less than threshold value, by the electric quantity signal of described the 3rd group of coilBe encoded to binary code " 0 ";
The 4th converting unit, for detection of the electric quantity signal of described the 4th test side, when the electricity of the 4th test sideWhen amount signal is more than or equal to threshold value, the electric quantity signal of described the 4th group of coil is encoded to binary code" 1 "; In the time that the electric quantity signal of the 4th test side is less than threshold value, by the electric quantity signal of described the 4th group of coilBe encoded to binary code " 0 ";
The 5th converting unit, for detection of the electric quantity signal of described the 5th test side, when the electricity of the 5th test sideWhen amount signal is more than or equal to threshold value, the electric quantity signal of described the 5th group of coil is encoded to binary code" 1 "; In the time that the electric quantity signal of the 5th test side is less than threshold value, by the electric quantity signal of described the 5th group of coilBe encoded to binary code " 0 "; With,
The 6th converting unit, for detection of the electric quantity signal of described the 6th test side, when the electricity of the 6th test sideWhen amount signal is more than or equal to threshold value, the electric quantity signal of described the 6th group of coil is encoded to binary code" 1 "; In the time that the electric quantity signal of the 6th test side is less than threshold value, by the electric quantity signal of described the 6th group of coilBe encoded to binary code " 0 ".
5. rod according to claim 1 position indicator, is characterized in that described the first secondary coil bagDraw together 31 discrete coils; Described 31 discrete coils are divided into 5 groups of coils;
First group of coil comprise the 1st coil, the 3rd coil, the 5th coil, the 7th coil, the 9th coil,The 11st coil, the 13rd coil, the 15th coil, the 17th coil, the 19th coil, the 21st coil,23 coils, the 25th coil, the 27th coil, the 29th coil and the 31st coil;
Wherein, the input tap of the 1st coil is the first test side, and the output tap of the 1st coil connects the 3rdThe output tap of coil, the input tap of the 3rd coil connects the input tap of the 5th coil, the 5th coilOutput tap connects the output tap of the 7th coil, and the input tap of the 7th coil connects the input of the 9th coilTap, the output tap of the 9th coil connects the output tap of the 11st coil, the input tap of the 11st coilConnect the input tap of the 13rd coil, the output tap of the 13rd coil connects the output tap of the 15th coil,The input tap of the 15th coil connects the input tap of the 17th coil, and the output tap of the 17th coil connects theThe output tap of 19 coils, the input tap of the 19th coil connects the input tap of the 21st coil, the 21st lineThe output tap of circle connects the output tap of the 23rd coil, and the input tap of the 23rd coil connects the 25th coilInput tap, the output tap of the 25th coil connects the output tap of the 27th coil, the 27th coil defeatedEnter the input tap that tap connects the 29th coil, the output tap of the 29th coil connects the output of the 31st coilTap, the input tap ground connection of the 31st coil;
Second group of coil comprise the 2nd coil, the 6th coil, the 10th coil, the 14th coil, the 18th coil,The 22nd coil, the 26th coil and the 30th coil;
Wherein, the input tap of the 2nd coil is the second test side, and the output tap of the 2nd coil connects the 6thThe output tap of coil, the input tap of the 6th coil connects the input tap of the 10th coil, the 10th coilOutput tap connect the output tap of the 14th coil, the input tap of the 14th coil connects the 18th coilInput tap, the output tap of the 18th coil connects the output tap of the 22nd coil, the input of the 22nd coilTap connects the input tap of the 26th coil, and the output tap of the 26th coil connects the output of the 30th coil and takes outHead, the input tap ground connection of the 30th coil;
The 3rd group of coil comprises the 4th coil, the 12nd coil, the 20th coil and the 28th coil;
Wherein, the input tap of the 4th coil is the 3rd test side, and the output tap of the 4th coil connects the 12ndThe output tap of coil, the input tap of the 12nd coil connects the input tap of the 20th coil, the 20th coilOutput tap connect the output tap of the 28th coil, the input tap ground connection of the 28th coil;
The 4th group of coil comprises the 8th coil and the 24th coil;
Wherein, the input tap of the 8th coil is the 4th test side, and the output tap of the 8th coil connects the 24thThe output tap of coil, the input tap ground connection of the 24th coil;
The 5th group of coil comprises the 16th coil; Wherein, the input tap of the 16th coil is the 5th test side,The output tap ground connection of the 16th coil.
6. rod according to claim 5 position indicator, is characterized in that described second subprime coil bagDraw together 4 discrete coils, according to being in turn socketed in described elementary line by the sequence number of the 1st coil to the 4 coilsThe periphery of circle, the 31st coil in the 1st coil and described the first secondary coil in described second subprime coilAdjoining;
4 discrete coils in described second subprime coil are divided into three groups, be respectively the 6th group of coil,The 7th group of coil and the 8th group of coil;
The 6th group of coil comprises the 1st coil and the 3rd coil in described second subprime coil; Wherein, described inThe input tap of the 1st coil in second subprime coil is the 6th test side, in described second subprime coilThe output tap of the 1st coil connects the output tap of the 3rd coil in described second subprime coil, and describedThe input tap ground connection of the 3rd coil in two secondary coils;
The 7th group of coil comprises the 2nd coil in described second subprime coil; Wherein, described second subprime lineThe input tap of the 2nd coil in circle is the 7th test side, the 2nd coil in described second subprime coilOutput tap ground connection;
The 8th group of coil comprises the 4th coil in described second subprime coil; Wherein, described second subprime lineThe input tap of the 4th coil in circle is the 8th test side, the 4th coil in described second subprime coilOutput tap ground connection.
7. rod according to claim 6 position indicator, is characterized in that described signaling conversion circuit bagDraw together:
The first converting unit, for detection of the electric quantity signal of described the first test side, when the electricity of the first test sideWhen amount signal is more than or equal to threshold value, the electric quantity signal of described first group of coil is encoded to binary code" 1 "; In the time that the electric quantity signal of the first test side is less than threshold value, by the electric quantity signal of described first group of coilBe encoded to binary code " 0 ";
The second converting unit, for detection of the electric quantity signal of described the second test side, when the electricity of the second test sideWhen amount signal is more than or equal to threshold value, the electric quantity signal of described second group of coil is encoded to binary code" 1 "; In the time that the electric quantity signal of the second test side is less than threshold value, by the electric quantity signal of described second group of coilBe encoded to binary code " 0 ";
The 3rd converting unit, for detection of the electric quantity signal of described the 3rd test side, when the electricity of the 3rd test sideWhen amount signal is more than or equal to threshold value, the electric quantity signal of described the 3rd group of coil is encoded to binary code" 1 "; In the time that the electric quantity signal of the 3rd test side is less than threshold value, by the electric quantity signal of described the 3rd group of coilBe encoded to binary code " 0 ";
The 4th converting unit, for detection of the electric quantity signal of described the 4th test side, when the electricity of the 4th test sideWhen amount signal is more than or equal to threshold value, the electric quantity signal of described the 4th group of coil is encoded to binary code" 1 "; In the time that the signal of described the 4th test side is less than threshold value, by the electric quantity signal of described the 4th group of coilBe encoded to binary code " 0 ";
The 5th converting unit, for detection of the electric quantity signal of described the 5th test side, when the electricity of the 5th test sideWhen amount signal is more than or equal to threshold value, the electric quantity signal of described the 5th group of coil is encoded to binary code" 1 "; In the time that the electric quantity signal of the 5th test side is less than threshold value, by the electric quantity signal of described the 5th group of coilBe encoded to binary code " 0 ";
The 6th converting unit, for detection of the electric quantity signal of described the 6th test side, when the electricity of the 6th test sideWhen amount signal is more than or equal to threshold value, the electric quantity signal of described the 6th group of coil is encoded to binary code" 1 "; In the time that the electric quantity signal of the 6th test side is less than threshold value, by the electric quantity signal of described the 6th group of coilBe encoded to binary code " 0 ";
The 7th converting unit, for detection of the electric quantity signal of described the 7th test side, when the electricity of the 7th test sideWhen amount signal is more than or equal to threshold value, the electric quantity signal of described the 7th group of coil is encoded to binary code" 1 "; In the time that the electric quantity signal of the 7th test side is less than threshold value, by the electric quantity signal of described the 7th group of coilBe encoded to binary code " 0 "; With,
The 8th converting unit, for detection of the electric quantity signal of described the 8th test side, when the electricity of the 8th test sideWhen amount signal is more than or equal to threshold value, the electric quantity signal of described the 8th group of coil is encoded to binary code" 1 "; In the time that the electric quantity signal of the 8th test side is less than threshold value, by the electric quantity signal of described the 8th group of coilBe encoded to binary code " 0 ".
8. rod according to claim 1 position indicator, is characterized in that, in described the first secondary coilN discrete coil in adjacent windings between spacing and x discrete lines in described second subprime coilSpacing between adjacent windings in circle is L, L >=80mm.
9. rod according to claim 1 position indicator, is characterized in that, described rod position indicator also wrapsDraw together the first bucking coil and the second bucking coil;
Described the first bucking coil and described the second bucking coil are along the measured CRDM of parcelThe excellent stroke sleeve pipe of drive rod install, be respectively in the first secondary coil away from one end of second subprime coil andSecond subprime coil is away from one end of the first secondary coil, and and described primary coil between be provided with separation layer.
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| CN107068219B (en) * | 2016-11-30 | 2019-07-02 | 中广核工程有限公司 | Command bundle rods for nuclear reactors stick location probe |
| CN106448767A (en) * | 2016-12-13 | 2017-02-22 | 中广核工程有限公司 | Control rod monitoring device for nuclear power station reactor |
| CA3139855A1 (en) * | 2019-05-10 | 2021-02-18 | Westinghouse Electric Company Llc | Digital rod position indication system and method |
| CN113192661A (en) * | 2021-04-27 | 2021-07-30 | 中国核电工程有限公司 | Rod position monitoring system, rod grid balance judgment method and device, and power control system |
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