CN107991004B - Reduce the special thermoelectricity even parity check error system of nuclear power unit - Google Patents

Reduce the special thermoelectricity even parity check error system of nuclear power unit Download PDF

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Publication number
CN107991004B
CN107991004B CN201711220405.6A CN201711220405A CN107991004B CN 107991004 B CN107991004 B CN 107991004B CN 201711220405 A CN201711220405 A CN 201711220405A CN 107991004 B CN107991004 B CN 107991004B
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China
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cup
cold
cylinder
verified
heat insulation
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CN107991004A (en
Inventor
乐康定
苏小虎
徐晖
张茹萱
杨仲伟
石庐
罗娟华
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China Energy Construction Group East China Electric Power Test And Research Institute Co Ltd
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China Energy Construction Group East China Electric Power Test And Research Institute Co Ltd
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01KMEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K15/00Testing or calibrating of thermometers
    • G01K15/005Calibration
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01KMEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K15/00Testing or calibrating of thermometers
    • G01K15/002Calibrated temperature sources, temperature standards therefor

Abstract

The invention discloses reduce the special thermoelectricity even parity check error system of nuclear power unit.It is related to thermoelectricity even parity check error technology field, when carrying out thermoelectricity even parity check, environment temperature influences the error of verified thermoelectricity even parity check smaller.It further include controller, signal conditioning module, heat insulation barrel and the temperature within the barrel control mechanism that can control heat-insulated temperature within the barrel including the verified thermocouple of standard hot even summation, the verified thermocouple of standard hot even summation is connect with controller respectively;It is closed equipped with bung in the bung hole of heat insulation barrel, it is equipped with bracket in bucket, No.1 motor is equipped on bracket, cylinder is equipped in the shaft of No.1 motor, No. two motors are equipped on the telescopic rod of cylinder, equipped with cylinder in the shaft of No. two motors;The cold end signal output end of standard couple and the cold end signal output end of verified thermocouple are all connect with signal conditioning module respectively;If end where four fixing grooves of cylinder is thermocouple checkout terminal.

Description

Reduce the special thermoelectricity even parity check error system of nuclear power unit
Technical field
The present invention relates to thermoelectricity even parity check error technology fields, and in particular to reduces the special thermoelectricity even parity check of nuclear power unit and misses Poor system.
Background technique
Measurement end and verified heat of the thermoelectricity even parity check error device of existing nuclear power unit due to standard couple The measurement end position of galvanic couple is different, leads to the environment temperature of the measurement end of standard couple and the measurement end of verified thermocouple Difference, environment temperature is different, when carrying out thermoelectricity even parity check, is difficult to carry out the error of verified thermocouple more accurate Verification.Since error of the environment temperature to verified thermoelectricity even parity check is affected, a kind of environment temperature is designed to by school The error for testing thermoelectricity even parity check influences lesser system and is very necessary.
Summary of the invention
The present invention is provided a kind of in progress heat to solve present thermoelectricity even parity check error device above shortcomings When galvanic couple verifies, environment temperature is smaller on the influence of the error of verified thermoelectricity even parity check, and environment temperature can be controlled freely, reliably The high special thermoelectricity even parity check error system of reduction nuclear power unit of property.
The above technical problem is solved through the following technical scheme:
The special thermoelectricity even parity check error system of nuclear power unit, including the verified thermocouple of standard hot even summation are reduced, is also wrapped Include controller, signal conditioning module, heat insulation barrel and the temperature within the barrel control mechanism that can control heat-insulated temperature within the barrel, standard couple It is connect respectively with controller with verified thermocouple;It is closed equipped with bung in the bung hole of heat insulation barrel, it is equipped with bracket in bucket, is propping up Frame is equipped with No.1 motor, and cylinder is equipped in the shaft of No.1 motor, No. two motors is equipped on the telescopic rod of cylinder, two The shaft of number motor is equipped with cylinder;It is laid in the circumferential wall of cylinder in the lower end of cylinder along the circumferential wall of vertical circular shaft There are four fixing grooves;The cold end end of standard couple includes the left cold end branch head of standard and standard right cold end branch head;By school The cold end end for testing thermocouple includes verified left cold end branch head and verified right cold end branch head;The left cold end of standard point Branch head, standard right cold end branch head, verified left cold end branch head and the verified right cold end branch head one-to-one fixed cloth of difference It sets in four fixing grooves;The cold end signal output end of standard couple and the cold end signal output end of verified thermocouple all divide It is not connect with signal conditioning module;If end where four fixing grooves of cylinder is thermocouple checkout terminal;Under the control of the controller, Thermocouple checkout terminal can be inserted into temperature within the barrel control mechanism by the cooperation of No.1 motor and cylinder;The control of the No.1 motor End processed, No. two motors control terminal, the control terminal of cylinder, the control terminal difference of signal conditioning module and temperature within the barrel control mechanism It is connect with controller.
When detecting, under the control of the controller, under the cooperation of No.1 motor and cylinder, the thermocouple checkout terminal of cylinder It is inserted into temperature within the barrel control mechanism by cylinder, then drives the thermocouple checkout terminal of cylinder to exist under the rotation of No. two motors Rotation in temperature within the barrel control mechanism.The thermocouple checkout terminal of rotation can make the left cold end branch head of standard, standard right cold end branch Head, verified left cold end branch head and verified right cold end branch the head mutual suffered environment temperature within the time of rotation Influence almost the same, so that thermocouple is when being verified, environment temperature influences the error of verified thermoelectricity even parity check It is smaller, and environment temperature can be controlled freely, high reliablity.
Preferably, temperature within the barrel control mechanism include can thermoelectric couple checkout terminal provide heating heating mechanism and can be to Thermocouple checkout terminal provides the cooling body of cooling;The control terminal of heating mechanism and the control terminal of cooling body respectively with controller Connection;Under the control of the controller, thermocouple checkout terminal can be inserted into heating mechanism or be inserted into cooling body by cylinder.
Heating mechanism and cooling body make the environment temperature to thermoelectricity even parity check can be carried out it is artificial preset, thus Thermoelectricity even parity check error is set to be easy to correct, thermocouple check results are also more controllable and reliable.
Preferably, being equipped with left arm bunghole on the left side wall of heat insulation barrel, right arm bucket is equipped on the right side wall of heat insulation barrel Hole;Heating mechanism includes left cup, heater, No.1 pipe and the No.1 level sensor that can detect liquid level in left cup that rim of a cup is angle Device;Areole is equipped on the side wall of cup of left cup;Bottom of a cup hole is equipped in the bottom of a cup of left cup;It is docked in the bottom of a cup hole lower port of left cup It is connected with No.1 drainage tube, No.1 discharging valve is equipped on No.1 drainage tube;The rim of a cup sealing of left cup is connected in heat insulation barrel Left arm bunghole on, and bottom of a cup is downwardly inclined arrangement to the rim of a cup of left cup upward, and the bottom of a cup of left cup is located at outside heat insulation barrel, left cup The angle of cup heart line and the bucket heart line of heat insulation barrel is acute angle;The areole of the water outlet of heater and left cup is docked by No.1 pipe Connection;The control terminal of the control terminal of the heater, No.1 water level sensor and No.1 discharging valve is connect with controller respectively.
Preferably, being equipped with right arm bunghole on the right side wall of heat insulation barrel, right arm bucket is equipped on the right side wall of heat insulation barrel Hole;Cooling body includes the right cup that rim of a cup is angle, cooler, No. two pipes and No. two level sensors that can detect liquid level in right cup Device;Areole is equipped on the side wall of cup of right cup;Bottom of a cup hole is equipped in the bottom of a cup of right cup;It is docked in the bottom of a cup hole lower port of right cup No. two drainage tubes are connected with, No. two discharging valves are equipped on No. two drainage tubes;The rim of a cup sealing of right cup is connected in heat insulation barrel Right arm bunghole on, and bottom of a cup is downwardly inclined arrangement to the rim of a cup of right cup upward, and the bottom of a cup of right cup is located at outside heat insulation barrel, right cup The angle of cup heart line and the bucket heart line of heat insulation barrel is acute angle;The areole of the water outlet of cooler and right cup passes through No. two pipe docking Connection;The control terminal of the control terminal of the cooler, No. two water level sensors and No. two discharging valves is connect with controller respectively.
Preferably, error system further includes voltage detection module connected to the controller, hot box and can be packed into ice water The No.1 ice chest of mixture, heat insulation barrel and No.1 ice chest are all respectively separated and are fixed in hot box;Left cup and the equal position of right cup In in hot box, it is equipped with left cup circular hole on the wall of cup of left cup, the left thermally conductive sheet of No.1 is sealedly connected on left cup circular hole;One Number ice chest is equipped with No.1 ice chest circular hole, and No. two left thermally conductive sheets are sealedly connected on No.1 ice chest circular hole;One piece of No.1 temperature difference The cold and hot surface of power-generating chip is respectively on the thermally conductive outer surface for being connected to the left thermally conductive sheet of No.1 and on the outer surface of No. two left thermally conductive sheets; The test side of voltage detection module is connected on the output lead of No.1 thermo-electric generation chip.
The present invention can reach following effect:
The present invention when detecting, under the control of the controller, under the cooperation of No.1 motor and cylinder, the thermocouple of cylinder Checkout terminal is inserted into temperature within the barrel control mechanism by cylinder, and the thermocouple school of cylinder is then driven under the rotation of No. two motors End is tested to rotate in temperature within the barrel control mechanism.The thermocouple checkout terminal of rotation can make the left cold end branch head of standard, standard right cold Hold branch's head, verified left cold end branch head and verified right cold end branch the head mutual suffered environment within the time of rotation The influence of temperature is almost the same, so that thermocouple is when being verified, mistake of the environment temperature to verified thermoelectricity even parity check Difference influence is smaller, and environment temperature can be controlled freely, high reliablity.
Detailed description of the invention
Fig. 1 is a kind of attachment structure schematic diagram of the embodiment of the present invention.
Fig. 2 is a kind of circuit theory connection structure schematic block diagram of the embodiment of the present invention.
Fig. 3 is a kind of use when the thermocouple checkout terminal of cylinder of the embodiment of the present invention is inserted into heating mechanism by cylinder State attachment structure schematic diagram.
Fig. 4 is a kind of use when the thermocouple checkout terminal of cylinder of the embodiment of the present invention is inserted into cooling body by cylinder State attachment structure schematic diagram.
Specific embodiment
The present invention will be further described below with reference to the accompanying drawings and embodiments.
Embodiment reduces the special thermoelectricity even parity check error system of nuclear power unit, referring to shown in Fig. 1, Fig. 2, Fig. 3, Fig. 4, wraps It includes standard couple 41, verified thermocouple 42, controller 44, signal conditioning module 43, heat insulation barrel 23 and can control heat insulation barrel The temperature within the barrel control mechanism 38 of interior temperature, the verified thermocouple of standard hot even summation are connect with controller respectively;In heat insulation barrel Bung hole it is closed be equipped with bung 24, in bucket be equipped with bracket 25, on bracket be equipped with No.1 motor 26, in the shaft of No.1 motor It is equipped with cylinder 27, No. two motors 28 are equipped on the telescopic rod of cylinder, cylinder 29 is equipped in the shaft of No. two motors;In circle The lower end of column is laid with four fixing grooves along the circumferential wall of vertical circular shaft in the circumferential wall of cylinder;Standard couple it is cold End end includes the left cold end branch head 33 of standard and standard right cold end branch head 31;The cold end end of verified thermocouple includes quilt Verify left cold end branch head 32 and verified right cold end branch head;The left cold end branch head of the standard, standard right cold end branch head, Verified left cold end branch head and the verified right cold end branch head one-to-one fixed and arranged of difference are in four fixing grooves;Standard hot The cold end signal output end of galvanic couple and the cold end signal output end of verified thermocouple are all connect with signal conditioning module respectively;If End where four fixing grooves of cylinder is thermocouple checkout terminal 30;Under the control of the controller, the cooperation of No.1 motor and cylinder Thermocouple checkout terminal can be inserted into temperature within the barrel control mechanism;The control of the control terminal of the No.1 motor, No. two motors The control terminal at end, the control terminal of cylinder, signal conditioning module and temperature within the barrel control mechanism is connect with controller respectively.
Temperature within the barrel control mechanism includes that energy thermoelectric couple checkout terminal provides the heating mechanism 39 and energy thermoelectric couple of heating Checkout terminal provides the cooling body 40 of cooling;The control terminal of heating mechanism and the control terminal of cooling body connect with controller respectively It connects;Under the control of the controller, thermocouple checkout terminal can be inserted into heating mechanism or be inserted into cooling body by cylinder.
It is equipped with left arm bunghole on the left side wall of heat insulation barrel, right arm bunghole is equipped on the right side wall of heat insulation barrel;Heater Structure includes left cup 1, heater 2, No.1 pipe 3 and the No.1 water level sensor 34 that can detect liquid level in left cup that rim of a cup is angle; Areole is equipped on the side wall of cup of left cup;Bottom of a cup hole is equipped in the bottom of a cup of left cup;Left cup bottom of a cup hole lower port in succession It is connected to No.1 drainage tube 5, No.1 discharging valve 4 is equipped on No.1 drainage tube;The rim of a cup sealing of left cup is connected in heat insulation barrel Left arm bunghole on, and bottom of a cup is downwardly inclined arrangement to the rim of a cup of left cup upward, and the bottom of a cup of left cup is located at outside heat insulation barrel, left cup The angle of cup heart line and the bucket heart line of heat insulation barrel is acute angle;The areole of the water outlet of heater and left cup is docked by No.1 pipe Connection;The control terminal of the control terminal of the heater, No.1 water level sensor and No.1 discharging valve is connect with controller respectively.
Error system further includes voltage detection module 6 connected to the controller, hot box 35 and can be packed into mixture of ice and water No.1 ice chest 8, heat insulation barrel and No.1 ice chest are all respectively separated and are fixed in hot box;Left cup and right cup are respectively positioned on heat-insulated In case, it is equipped with left cup circular hole on the wall of cup of left cup, the left thermally conductive sheet 11 of No.1 is sealedly connected on left cup circular hole;It is cold in No.1 Case is equipped with No.1 ice chest circular hole, and No. two left thermally conductive sheets 9 are sealedly connected on No.1 ice chest circular hole;One piece of No.1 thermo-electric generation The cold and hot surface of chip 10 is respectively on the thermally conductive outer surface for being connected to the left thermally conductive sheet of No.1 and on the outer surface of No. two left thermally conductive sheets;Electricity The test side of pressure detection module 6 is connected on the output lead 7 of No.1 thermo-electric generation chip 10.
It is equipped with right arm bunghole on the right side wall of heat insulation barrel, right arm bunghole is equipped on the right side wall of heat insulation barrel;Cooler Structure includes 21, No. two pipes 20 of right cup 22, cooler and No. two water level sensors that can detect liquid level in right cup that rim of a cup is angle 17;Areole is equipped on the side wall of cup of right cup;Bottom of a cup hole is equipped in the bottom of a cup of right cup;It is docked in the bottom of a cup hole lower port of right cup No. two drainage tubes 19 are connected with, No. two discharging valves 18 are equipped on No. two drainage tubes;Right cup rim of a cup sealing be connected every On the right arm bunghole of hot bucket, and bottom of a cup is downwardly inclined arrangement to the rim of a cup of right cup upward, and the bottom of a cup of right cup is located at outside heat insulation barrel, right The angle of the bucket heart line of the cup heart line and heat insulation barrel of cup is acute angle;The areole of the water outlet of cooler and right cup passes through No. two pipes It is connected;The control terminal of the control terminal of the cooler, No. two water level sensors and No. two discharging valves connects with controller respectively It connects.
Error system further includes the No.1 hot tank 15 that can be packed into hot water, and heat insulation barrel and No.1 hot tank are all respectively separated fixation and set It sets in hot box;It is equipped with right cup circular hole on the wall of cup of right cup, No. two right thermally conductive sheets 12 are sealedly connected on right cup circular hole; It is equipped with No.1 hot tank circular hole in No.1 hot tank, No. two right thermally conductive sheets 14 are sealedly connected on No.1 hot tank circular hole;One piece two The cold and hot surface of number thermo-electric generation chip 13 is respectively on the thermally conductive outer surface for being connected to No. two right thermally conductive sheets and No. two right thermally conductive sheets On outer surface;The test side of voltage detection module 6 is connected on the output lead 16 of No. two thermo-electric generation chips 13.
Heating mechanism and cooling body make the environment temperature to thermoelectricity even parity check can be carried out it is artificial preset, thus Thermoelectricity even parity check error is set to be easy to correct, thermocouple check results are also more controllable and reliable.
When detecting, under the control of the controller, under the cooperation of No.1 motor and cylinder, the thermocouple checkout terminal of cylinder It is inserted into temperature within the barrel control mechanism by cylinder, then drives the thermocouple checkout terminal of cylinder to exist under the rotation of No. two motors It rotates in heating mechanism or is rotated in cooling body.The galvanic couple checkout terminal of rotation can make the left cold end branch head of standard, standard right Cold end branch head, verified left cold end branch head and verified right cold end branch the head mutual suffered ring within the time of rotation The influence of border temperature is almost the same, so that thermocouple, when being verified, environment temperature is to verified thermoelectricity even parity check Error influence is smaller, and environment temperature can be controlled freely, high reliablity.Allow the verified thermocouple of standard hot even summation in heater Rotation or rotated in cooling body in structure so that the verified thermocouple of standard hot even summation at the same time in locating ring Border is essentially identical, so that more accurate to verified thermoelectricity even parity check error.It can determine by No.1 water level sensor The volume of heating liquid 36 in left cup, and may further determine that the temperature for heating liquid by heater, so that it is determined that No.1 temperature Poor power-generating chip within the set time consumed by energy.Preset the voltage change curve mark of No.1 thermo-electric generation chip The galvanic couple curve B of standard couple corresponding to directrix curve A in normal conditions;In verification, by when previous No.1 temperature The voltage change curve C of poor power-generating chip calculates the average voltage error D of No.1 thermo-electric generation chip compared with curve A; Again by compared with curve B, calculating working as standard couple to the current curve E of standard couple in normal conditions Preceding average galvanic couple error F.If the value that error D subtracts error F is less than setting value, description standard thermocouple is in critical field It is interior, standard galvanic couple can be used in the reference data as verified thermocouple at this time;If the value that error D subtracts error F is being set More than definite value, then description standard thermocouple cannot use standard galvanic couple as verified thermoelectricity at this time not in critical field Even reference data, to reduce the error of thermoelectricity even parity check.Heating mechanism and cooling body substantially increase the flexible of verification Property and reliability.
Embodiments of the present invention are described above in conjunction with attached drawing, however, the implementation is not limited to the above embodiments, this field Those of ordinary skill can be with various changes and modifications may be made within the scope of the appended claims.

Claims (1)

1. reducing the special thermoelectricity even parity check error system of nuclear power unit, including the verified thermocouple of standard hot even summation, feature It is, further includes controller, signal conditioning module, heat insulation barrel and the temperature within the barrel control mechanism that can control heat-insulated temperature within the barrel, The verified thermocouple of standard hot even summation is connect with controller respectively;It is closed equipped with bung in the bung hole of heat insulation barrel, it is set in bucket There is bracket, No.1 motor is equipped on bracket, cylinder is equipped in the shaft of No.1 motor, two are equipped on the telescopic rod of cylinder Number motor is equipped with cylinder in the shaft of No. two motors;The lower end of cylinder along vertical circular shaft circumferential wall cylinder circle Four fixing grooves are laid on peripheral wall;The cold end end of standard couple includes the left cold end branch head of standard and standard right cold end Branch's head;The cold end end of verified thermocouple includes verified left cold end branch head and verified right cold end branch head;It is described The left cold end branch head of standard, standard right cold end branch head, verified left cold end branch head and verified right cold end branch head difference One-to-one fixed and arranged is in four fixing grooves;The cold end signal output end of standard couple and the cold end letter of verified thermocouple Number output end is all connect with signal conditioning module respectively;If end where four fixing grooves of cylinder is thermocouple checkout terminal;It is controlling Under the control of device processed, thermocouple checkout terminal can be inserted into temperature within the barrel control mechanism by the cooperation of No.1 motor and cylinder;Institute Control terminal, the control terminal of cylinder, signal conditioning module and the temperature within the barrel of the control terminal, No. two motors of stating No.1 motor control machine The control terminal of structure is connect with controller respectively;
Temperature within the barrel control mechanism includes that energy thermoelectric couple checkout terminal provides the heating mechanism and energy thermoelectric couple checkout terminal of heating The cooling body of cooling is provided;The control terminal of heating mechanism and the control terminal of cooling body are connect with controller respectively;It is controlling Under the control of device, thermocouple checkout terminal can be inserted into heating mechanism or be inserted into cooling body by cylinder;
It is equipped with left arm bunghole on the left side wall of heat insulation barrel, right arm bunghole is equipped on the right side wall of heat insulation barrel;Heating mechanism packet Include left cup, heater, No.1 pipe and the No.1 water level sensor that liquid level in left cup can be detected that rim of a cup is angle;In the side of left cup Wall of cup is equipped with areole;Bottom of a cup hole is equipped in the bottom of a cup of left cup;No.1 is connected in the bottom of a cup hole lower port of left cup to draw Flow tube is equipped with No.1 discharging valve on No.1 drainage tube;The rim of a cup sealing of left cup is connected on the left arm bunghole of heat insulation barrel, And bottom of a cup is downwardly inclined arrangement to the rim of a cup of left cup upward, and the bottom of a cup of left cup is located at outside heat insulation barrel, the cup heart line of left cup with it is heat-insulated The angle of the bucket heart line of bucket is acute angle;The areole of the water outlet of heater and left cup is connected by No.1 pipe;It is described to add The control terminal of the control terminal of hot device, No.1 water level sensor and No.1 discharging valve is connect with controller respectively;
It is equipped with right arm bunghole on the right side wall of heat insulation barrel, right arm bunghole is equipped on the right side wall of heat insulation barrel;Cooling body packet Include right cup, the cooler that rim of a cup is angle, No. two pipes and No. two water level sensors that liquid level in right cup can be detected;In the side of right cup Wall of cup is equipped with areole;Bottom of a cup hole is equipped in the bottom of a cup of right cup;No. two are connected in the bottom of a cup hole lower port of right cup to draw Flow tube is equipped with No. two discharging valves on No. two drainage tubes;The rim of a cup sealing of right cup is connected on the right arm bunghole of heat insulation barrel, And bottom of a cup is downwardly inclined arrangement to the rim of a cup of right cup upward, and the bottom of a cup of right cup is located at outside heat insulation barrel, the cup heart line of right cup with it is heat-insulated The angle of the bucket heart line of bucket is acute angle;The areole of the water outlet of cooler and right cup is connected by No. two pipes;It is described cold But the control terminal of the control terminal of device, No. two water level sensors and No. two discharging valves is connect with controller respectively;
Error system further include voltage detection module connected to the controller, hot box and can be packed into mixture of ice and water No.1 it is cold Case, heat insulation barrel and No.1 ice chest are all respectively separated and are fixed in hot box;Left cup and right cup are respectively positioned in hot box, on a left side The wall of cup of cup is equipped with left cup circular hole, and the left thermally conductive sheet of No.1 is sealedly connected on left cup circular hole;One is equipped on No.1 ice chest Number ice chest circular hole, is sealedly connected with No. two left thermally conductive sheets on No.1 ice chest circular hole;One piece of No.1 thermo-electric generation chip it is cold and hot Face is respectively on the thermally conductive outer surface for being connected to the left thermally conductive sheet of No.1 and on the outer surface of No. two left thermally conductive sheets;Voltage detection module Test side is connected on the output lead of No.1 thermo-electric generation chip.
CN201711220405.6A 2017-11-28 2017-11-28 Reduce the special thermoelectricity even parity check error system of nuclear power unit Active CN107991004B (en)

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