A kind of reactor core measuring system and signals collecting isolation card thereof
Technical field
The utility model belongs to million kilowatt advanced pressurized water reactor nuclear power plant field of measuring technique.
Background technology
The reactor core measuring system is finished measurement function jointly by gathering measuring unit and data processing unit, gathering measuring unit is made up of instrument and switch board in the heap of special use, be to be used for accurate collection, data that measurement is relevant with reactor core, mainly comprise measurement to core temperature, reactor core water level and reactor core neutron flux, data processing unit to the data of gathering measuring unit collection, measurement calculate, printout and preserve data with document form.
Need signalization to gather isolation card between measuring unit and the data processing unit transmission signals of gathering between measuring unit and the data processing unit is isolated conversion gathering.Now, nuclear power station has begun the transformation of domesticizing of reactor core measuring system, the data processing unit that exploitation makes new advances, and existing signals collecting isolation card can't with the new supporting use of homemade data processing unit.
The utility model content
The purpose of this utility model is to provide a kind of signals collecting isolation card of reactor core measuring system, be intended to solve existing signals collecting isolation card exist can't with the new matching used problem of homemade data processing unit.
The utility model is achieved in that a kind of signals collecting isolation card of reactor core measuring system, is connected between the digital data acquisition integrated circuit board of gathering measuring unit and data processing unit, and described signals collecting isolation card comprises:
The described collection measuring unit of input termination, the digital data acquisition integrated circuit board of the described data processing unit of output termination is used for the first signalling channel unit that the switching value input is isolated;
The digital data acquisition integrated circuit board of the described data processing unit of input termination, the described collection measuring unit of output termination is used for the secondary signal channel unit that switching value output is isolated; And
The described collection measuring unit of input termination, the digital data acquisition integrated circuit board of the described data processing unit of output termination is used for the 3rd signalling channel unit that the simulating signal input is isolated.In the said structure, the described first signalling channel unit comprises 16 paths.
In the said structure, each paths of the described first signalling channel unit comprises:
Signal input module and light-coupled isolation module;
The described collection measuring unit of the input termination of described signal input module, the input end of the described light-coupled isolation module of output termination of described signal input module, the digital data acquisition integrated circuit board of the described data processing unit of output termination of described light-coupled isolation module.
In the said structure, described signal input module comprises:
Resistance R 1, resistance R 2 and diode D1;
First end of described resistance R 1 is the input end of signal input module, second end of described resistance R 1 is the output terminal of signal input module, second end of the first terminating resistor R1 of described resistance R 2, the second end ground connection of described resistance R 2, second end of the negative electrode connecting resistance R1 of described diode D1, the plus earth of described diode D1.
In the said structure, described light-coupled isolation module comprises:
Optical coupling isolator U1 and resistance R 3;
The anode of the light emitting diode of described optical coupling isolator U1 and negative electrode connect negative electrode and the anode of described diode D1 respectively, the collector of the triode of described optical coupling isolator U1 connects power supply, and the output terminal of the very described light-coupled isolation module of the emission of the triode of described optical coupling isolator U1 is also by described resistance R 3 ground connection.
In the said structure, described secondary signal channel unit comprises 8 paths.
In the said structure, each paths of described secondary signal channel unit comprises:
Signal output module and relay isolation module;
The digital data acquisition integrated circuit board of the described data processing unit of input termination of described signal output module, the input end of the described relay isolation module of output termination of described signal output module, the described collection measuring unit of the output termination of described relay isolation module.
In the said structure, described signal output module comprises:
Resistance R 4, resistance R 5, triode Q1 and sustained diode 2;
First end of described resistance R 4 is the input end of described signal output module, second end of described resistance R 4 is leaded up to resistance R 5 ground connection, another road of second end of described resistance R 4 connects the base stage of triode Q1, the grounded emitter of described triode Q1, the collector of described triode Q1 continues and flows the anode of diode D2, and the negative electrode of described sustained diode 2 connects power supply.
In the said structure, described relay isolation module comprises relay K 1, first end of the coil of described relay K 1 links to each other with anode with the negative electrode of described sustained diode 2 respectively with second end, and the switch terminals of described relay K 1 is the output terminal of described relay isolation module.
In the said structure, described the 3rd signalling channel unit comprises 8 paths.
In the said structure, each paths of described the 3rd signalling channel unit comprises:
Isolation Amplifier Module and school zero amplification module;
The described collection measuring unit of the input termination of described Isolation Amplifier Module, the input end of the described school of output termination of described Isolation Amplifier Module zero amplification module, the digital data acquisition integrated circuit board of the described data processing unit of output termination of described school zero amplification module.
In the said structure, described Isolation Amplifier Module comprises:
Operational amplifier G1 and isolated amplifier;
The in-phase input end of described operational amplifier G1 is the input end of described Isolation Amplifier Module, the inverting input of described operational amplifier G1 connects the output terminal of described operational amplifier G1, the input end of the described isolated amplifier of output termination of described operational amplifier G1.
In the said structure, described school zero amplification module comprises:
Operational amplifier G2 and operational amplifier G3;
The in-phase input end of described operational amplifier G2 connects the output terminal of described isolated amplifier by resistance as the input end of school zero amplification module, the inverting input of described operational amplifier G2 connects the output terminal of described operational amplifier G2 by resistance, the output terminal of described operational amplifier G2 is the output terminal of described school zero amplification module, the output terminal of described operational amplifier G3 connects the in-phase input end of described operational amplifier G2 by resistance, the inverting input of the described operational amplifier G3 of output termination of described operational amplifier G3, the in-phase input end of described operational amplifier G3 connects power supply by resistance.
Another purpose of the present utility model is to provide a kind of reactor core measuring system that comprises above-mentioned signals collecting isolation card.
In the utility model, the signals collecting isolation card is arranged between the digital data acquisition integrated circuit board of gathering measuring unit and data processing unit, the signals collecting isolation card comprises that being used for switching value imports the first signalling channel unit of isolation, is used for the secondary signal channel unit of switching value output isolation and is used for the 3rd signalling channel unit that simulating signal is imported isolation, this signals collecting isolation card can with the new supporting use of homemade data processing unit, provide powerful support for for the production domesticization transformation of reactor core measuring system provides, broken external technical monopoly.
Description of drawings
Fig. 1 is the structural drawing of the signals collecting isolation card of the reactor core measuring system that provides of the utility model embodiment;
Fig. 2 is the circuit structure diagram of the first signalling channel unit that provides of the utility model embodiment;
Fig. 3 is the circuit structure diagram of the secondary signal channel unit that provides of the utility model embodiment;
Fig. 4 is the circuit structure diagram of the 3rd signalling channel unit that provides of the utility model embodiment.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearer,, the utility model is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.
Fig. 1 shows the structure of the signals collecting isolation card of the reactor core measuring system that the utility model embodiment provides, and for convenience of explanation, only shows the part relevant with the utility model embodiment.
The reactor core measuring system comprises gathers measuring unit 100, data processing unit 200 and signals collecting isolation card 300, and 300 pairs of transmission signals of gathering between measuring unit 100 and the data processing unit 200 of signals collecting isolation card are isolated conversion.
Signals collecting isolation card 300 comprises the first signalling channel unit 301, secondary signal channel unit 302 and the 3rd signalling channel unit 303, the input termination of the first signalling channel unit 301 is gathered measuring unit 100, digital data acquisition integrated circuit board 201, the first signalling channel unit 301 of the output termination data processing unit 200 of the first signalling channel unit 301 are used for the switching value input and isolate;
The digital data acquisition integrated circuit board 201 of the input termination data processing unit 200 of secondary signal channel unit 302, the output termination of secondary signal channel unit 302 is gathered measuring unit 100, and secondary signal channel unit 302 is used for switching value output and isolates;
Digital data acquisition integrated circuit board 201, the three signalling channel unit 303 that the input termination of the 3rd signalling channel unit 303 is gathered the output termination data processing unit 200 of measuring unit 100, the three signalling channel unit 303 are used for simulating signal input isolation.
As the utility model one embodiment, the first signalling channel unit 301 comprises 16 paths, and each paths of the first signalling channel unit 301 comprises:
Signal input module 3011 and light-coupled isolation module 3012;
The input termination of signal input module 3011 is gathered measuring unit 100, the input end of the output termination light-coupled isolation module 3012 of signal input module 3011, the digital data acquisition integrated circuit board 201 of the output termination data processing unit 200 of light-coupled isolation module 3012.
As the utility model one embodiment, secondary signal channel unit 302 comprises 8 paths, and each paths of secondary signal channel unit 302 comprises:
Signal output module 3021 and relay isolation module 3022;
The digital data acquisition integrated circuit board 201 of the input termination data processing unit 200 of signal output module 3021, the input end of the output relay termination isolation module 3022 of signal output module 3021, the output termination of relay isolation module 3022 is gathered measuring unit 100.
As the utility model one embodiment, the 3rd signalling channel unit 303 comprises 8 paths, and each paths of the 3rd signalling channel unit 303 comprises:
Isolation Amplifier Module 3031 and school zero amplification module 3032;
The input termination of Isolation Amplifier Module 3031 is gathered measuring unit 100, the input end of the output termination school of Isolation Amplifier Module 3,031 zero amplification module 3032, the digital data acquisition integrated circuit board 201 of the output termination data processing unit 200 of school zero amplification module 3032.
As the utility model one embodiment, signals collecting isolation card 300 is connected with collection measuring unit 100 by European connecting terminal block, and signals collecting isolation card 300 is connected with the digital data acquisition integrated circuit board 201 of data processing unit 200 by the data acquisition card connector.
Fig. 2 shows the circuit structure of the first signalling channel unit that the utility model embodiment provides, and for convenience of explanation, only shows the part relevant with the utility model embodiment.
As the utility model one embodiment, signal input module 3011 comprises:
Resistance R 1, resistance R 2 and diode D1;
First end of resistance R 1 is the input end of signal input module 3011, second end of resistance R 1 is the output terminal of signal input module 3011, second end of the first terminating resistor R1 of resistance R 2, the second end ground connection of resistance R 2, second end of the negative electrode connecting resistance R1 of diode D1, the plus earth of diode D1.
As the utility model one embodiment, light-coupled isolation module 3012 comprises:
Optical coupling isolator U1 and resistance R 3;
The anode of the light emitting diode of optical coupling isolator U1 and negative electrode connect negative electrode and the anode of diode D1 respectively, the collector of the triode of optical coupling isolator U1 connects+the 5V power supply, and the output terminal of the very light-coupled isolation module of emission 3012 of the triode of optical coupling isolator U1 also passes through resistance R 3 ground connection.
Fig. 3 shows the circuit structure of the secondary signal channel unit that the utility model embodiment provides, and for convenience of explanation, only shows the part relevant with the utility model embodiment.
As the utility model one embodiment, signal output module 3021 comprises:
Resistance R 4, resistance R 5, triode Q1 and sustained diode 2;
First end of resistance R 4 is the input end of signal output module 3021, second end of resistance R 4 is leaded up to resistance R 5 ground connection, another road of second end of resistance R 4 connects the base stage of triode Q1, the grounded emitter of triode Q1, the collector of triode Q1 continues and flows the anode of diode D2, and the negative electrode of sustained diode 2 connects+the 5V power supply.
As the utility model one embodiment, relay isolation module 3022 comprises relay K 1, first end of the coil of relay K 1 links to each other with anode with the negative electrode of sustained diode 2 respectively with second end, and the switch terminals of relay K 1 is the output terminal of relay isolation module 3022.
Fig. 4 shows the circuit structure of the 3rd signalling channel unit that the utility model embodiment provides, and for convenience of explanation, only shows the part relevant with the utility model embodiment.
As the utility model one embodiment, Isolation Amplifier Module 3031 comprises:
Operational amplifier G1 and isolated amplifier Q1;
The in-phase input end of operational amplifier G1 is the input end of Isolation Amplifier Module 3031, and the inverting input of operational amplifier G1 connects the output terminal of operational amplifier G1, the input end of the output termination isolated amplifier Q1 of operational amplifier G1.
As the utility model one embodiment, school zero amplification module 3032 comprises:
Operational amplifier G2 and operational amplifier G3;
The in-phase input end of operational amplifier G2 connects the output terminal of isolated amplifier Q1 by resistance as the input end of school zero amplification module 3032, the inverting input of operational amplifier G2 connects output terminal and the ground of operational amplifier G2 by resistance, the output terminal of operational amplifier G2 is the output terminal of school zero amplification module 3032, the output terminal of operational amplifier G3 connects the in-phase input end of operational amplifier G2 by resistance, the inverting input of the output termination operational amplifier G3 of operational amplifier G3, the in-phase input end of operational amplifier G3 connects power supply by resistance.In the utility model embodiment, the signals collecting isolation card is arranged between the digital data acquisition integrated circuit board of gathering measuring unit and data processing unit, the signals collecting isolation card comprises that being used for switching value imports the first signalling channel unit of isolation, is used for the secondary signal channel unit of switching value output isolation and is used for the 3rd signalling channel unit that simulating signal is imported isolation, this signals collecting isolation card can with the new supporting use of homemade data processing unit, provide powerful support for for the production domesticization transformation of reactor core measuring system provides, broken external technical monopoly.
The above only is preferred embodiment of the present utility model; not in order to restriction the utility model; all any modifications of within spirit of the present utility model and principle, being done, be equal to and replace and improvement etc., all should be included within the protection domain of the present utility model.