CN107240426B - A kind of device for the processing of nuclear power plant's reactor coolant pump revolving speed - Google Patents

A kind of device for the processing of nuclear power plant's reactor coolant pump revolving speed Download PDF

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Publication number
CN107240426B
CN107240426B CN201710408821.2A CN201710408821A CN107240426B CN 107240426 B CN107240426 B CN 107240426B CN 201710408821 A CN201710408821 A CN 201710408821A CN 107240426 B CN107240426 B CN 107240426B
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signal
circuit
module
processing
revolving speed
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CN107240426A (en
Inventor
陈静
何正熙
李小芬
朱加良
何鹏
陈学坤
徐涛
王华金
李文平
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Nuclear Power Institute of China
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Nuclear Power Institute of China
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    • GPHYSICS
    • G21NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21CNUCLEAR REACTORS
    • G21C17/00Monitoring; Testing ; Maintaining
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E30/00Energy generation of nuclear origin
    • Y02E30/30Nuclear fission reactors

Abstract

The invention discloses a kind of devices for the processing of nuclear power plant's reactor coolant pump revolving speed, and described device includes signal pre-processing module and mathematical logic circuit module;The signal pre-processing module includes pulsed triggering circuit, and the pulsed triggering circuit is used to the received sensor signal of institute being converted to square-wave signal;The mathematical logic circuit module includes counter module, and the counter module receives the square-wave signal of pulsed triggering circuit output, completes to count square wave signal interval.The realization of described device function depends on provided method, using device and method provided above, when applying to the monitoring of cooler revolution speed, there is strong antijamming capability, response time fast, measurement accuracy high, highly reliable advantage low to the types entail of cable.

Description

A kind of device for the processing of nuclear power plant's reactor coolant pump revolving speed
Technical field
The present invention relates to nuclear power plant's reactor coolant pump revolving speeds to measure equipment technical field, is used for more particularly to one kind The device of nuclear power plant's reactor coolant pump revolving speed processing.
Background technique
In PWR nuclear power plant, main pump revolving speed is not only the important parameter of characterization main pump operating status, is even more reaction Heap protects system to provide initial data, has very important effect to the safety and operation that guarantee reactor.Therefore, main pump revolving speed Measuring system is nuclear power plant's important safety grade equipment.The key equipment of main pump speed measuring system mainly include speed probe and Revolving speed processing unit.Wherein, revolving speed processing unit receives the output signal from sensor, obtains corresponding tachometer value through processing, And outputting standard analog signal, while the switch that revolving speed is low and revolving speed is low is exported after tachometer value is compared with pre-set value Measure signal.In addition, revolving speed processing unit need to execute routine test.
In general, sensor output signal is voltage pulse signal, it is easy the effect of signals that is interfered, it is dry to be especially vulnerable to power frequency Disturb the influence in source.Then revolving speed processing unit calculates main pump revolving speed using software by single-chip microcontroller collection voltages pulse signal, The method needs to carry out scm software V&V, and single-chip microcontroller reliability is not high, low-response.Currently, revolving speed processing unit, which receives, passes Sensor signal is all made of nuclear leve coaxial cable and connects, and nuclear leve coaxial cable higher cost, and not general.In addition, common turn Fast processing unit power consumption is higher, if heat dissipation design is unreasonable, board is easy to cause to burn out.
In order to avoid drawbacks described above, precision, response time and the reliability of main pump tachometric survey are improved, reduces processing unit Power consumption and to design a kind of revolving speed processing unit very necessary.
Summary of the invention
The present invention provides a kind of devices for the processing of nuclear power plant's reactor coolant pump revolving speed, can effectively filter out interference Influence of the signal to measurement result, while processing accuracy is high, the response time is fast, low in energy consumption, and can use general twisted-pair power cable or coaxial Cable carries out input signal connection, can effectively ensure that the normal operation of nuclear power plant.
To solve the above problems, a kind of device for the processing of nuclear power plant's reactor coolant pump revolving speed provided by the invention It is solved the problems, such as by following technical essential: a kind of device for the processing of nuclear power plant's reactor coolant pump revolving speed, including letter Number preprocessing module and mathematical logic circuit module, the input terminal of the mathematical logic circuit module are connected to Signal Pretreatment mould On the output end of block;
The signal pre-processing module includes pulsed triggering circuit, and the pulsed triggering circuit is used for the received sensing of institute Device signal is converted to square-wave signal;
The mathematical logic circuit module includes counter module, and the counter module receives pulsed triggering circuit output Square-wave signal, complete to square wave signal interval count.
Using above scheme, turn by using sensor institute collected signal of the signal pre-processing module to monitoring revolving speed It is changed to square-wave signal, signal may make to have strong anti-interference ability in transmittance process, in this way, corresponding portion in the present apparatus Connecting line can using coaxial cable, general twisted-pair power cable cable carry out signal connection;It is different from traditional technology, is being reached pair In the case where main pump rotation speed monitoring function, due to not needing using the data processing method for carrying out complicated calculations by single-chip microcontroller, Therefore the present apparatus also have the characteristics that it is low in energy consumption;Meanwhile the multiple components in the present apparatus including are using pure hardware circuit the case where Under, it also can satisfy the needs of main pump rotation speed monitoring, therefore the present apparatus also has that the response time is fast, measurement accuracy is high, highly reliable Advantage.
As a kind of above-described further technology of device for the processing of nuclear power plant's reactor coolant pump revolving speed Scheme:
As the specific implementation form of signal pre-processing module, the signal pre-processing module further includes filter circuit, filter Wave circuit is set to the front end of pulsed triggering circuit, and filter circuit is for being filtered sensor signal, the pulse Trigger circuit is used to the output signal of filter circuit being converted to square-wave signal;
The filter circuit includes the LC low-pass filter being sequentially connected in series, RC low-pass filter, active band stop filter, institute State the front end that LC low-pass filter is located at signal source direction of transfer.Using the filter circuit of the above form, can effectively eliminate Interference signal.
As the specific implementation form of pulsed triggering circuit, the pulsed triggering circuit includes integral contrast circuit, zero passage Comparison circuit, signal synthesis circuit and trigger;
The integral contrast circuit and the equal receiving sensor signal of the signal input part of Zero-cross comparator both circuits integrate ratio Signal output end compared with circuit and Zero-cross comparator both circuits is both connected on the signal input part of signal synthesis circuit, the touching The signal input part of hair device is connected with the signal output end of signal synthesis circuit.
As the specific implementation form of counter module, the counter module include counter, control signaling module and Latch;The square-wave signal that the control signaling module is used to receive standard clock signal and pulsed triggering circuit generates, it is described The signal input part of counter is connected with the signal output end of control signaling module, and the data input pin of latch is connected to counting On the data output end of device.
For make the present apparatus it is with the following functions in it is any one or more: verification output correctness, realize switching value Data output, output characterize the current signal function of revolving speed, further include that input terminal is connected with counter module data output end Flash module;
One or more of following device: checking circuit, winding logic is connected on the output end of the Flash module Control circuit, D/A module.The above checking circuit and correct sexual function is exported for verification, winding logic control circuit is directed to out Data output function is measured in pass, and D/A module is to be directed to the current signal function of output characterization revolving speed.
It further include input terminal and pulse to enable the present apparatus quickly to export the low low switch amount signal low with revolving speed of revolving speed The connected relay spacing output circuit of trigger circuit output end.
One or more of following device: protective device, signal decaying is additionally provided in the signal pre-processing module Device, converting switch device, gain control.The above signal attenuation device and gain control may make pulse-triggered Circuit has better signal source, and the protective device is used to carry out each signal processing apparatus or control device one-way or bi-directional Protection, such as realize the protection of static discharge effect, electric current one-way flow function, the converting switch device realizes signal when available The on-off on road controls and obtains different signal transfer modes.
It further include signal-processing board as a kind of integrated design, the signal pre-processing module and mathematical logic circuit Module is both secured to signal-processing board.
Further, the power supply of the present apparatus is set as such as under type: the AC power source of input first passes around lightning protection circuit, Then pass through fuse, by key power switch control power supply on-off, AC power source by switch after, then by EMC filter into Row filtering, is sent into AC/DC module after filtering, then AC/DC module is exported by zener diode, and the power supply exported at this time is 5V DC power supply can be supplied to each electronic component and use.
Further, the present apparatus further includes display panel, and display panel includes main LED, Multifunctional LED and state instruction Lamp.Output valve etc. when main LED is used to show the tachometer value operated normally and routine test.Multifunctional LED is for showing definite value ratio Built-in test speed value when compared with preset value (revolving speed is low low with revolving speed) and routine test.Status indicator lamp is respectively used to device Power on instruction, operation/trystate instruction, revolving speed low (SPEED LOW) and low (SPEED LL) state instruction of revolving speed.Simultaneously On panel be arranged device upper electrical switch, examination lamp switch, inductor signal and stimulus switching switch, built-in stimulus and External stimulus switching switch, analog output switching switchs, built-in testing signal frequency adjusts switch and multi-functional aobvious Show window control switch.In addition, being also provided with external signal input interface and test speed and current signal output interface in panel.
Meanwhile the invention also discloses a kind of method for the processing of nuclear power plant's reactor coolant pump revolving speed, the above dresses The realization set depends on this method, and this method includes the following steps that sequence carries out:
S1, the voltage pulse signal that the sensor for being used to detect revolving speed exports is converted into square-wave signal;
S2, it uses counter module using the square-wave signal and standard clock signal as foundation, obtains rotary speed data.
The invention has the following advantages:
Using above scheme, turn by using sensor institute collected signal of the signal pre-processing module to monitoring revolving speed It is changed to square-wave signal, signal may make to have strong anti-interference ability in transmittance process, in this way, corresponding portion in the present apparatus Connecting line can using coaxial cable, general twisted-pair power cable cable carry out signal connection;It is different from traditional technology, is being reached pair In the case where main pump rotation speed monitoring function, due to not needing using the data processing method for carrying out complicated calculations by single-chip microcontroller, Therefore the present apparatus also have the characteristics that it is low in energy consumption;Meanwhile the multiple components in the present apparatus including are using pure hardware circuit the case where Under, it also can satisfy the needs of main pump rotation speed monitoring, therefore the present apparatus also has that the response time is fast, measurement accuracy is high, highly reliable Advantage.
Detailed description of the invention
Fig. 1 is that a kind of one, device for the processing of nuclear power plant's reactor coolant pump revolving speed of the present invention is specifically real Apply the system topological figure of example.
Specific embodiment
Below with reference to embodiment, the present invention is described in further detail, but the present invention is not limited only to following implementation Example:
Embodiment 1:
As shown in Figure 1, a kind of device for the processing of nuclear power plant's reactor coolant pump revolving speed, one kind are anti-for nuclear power plant The device for answering reactor coolant revolution speed to handle, including signal pre-processing module and mathematical logic circuit module, the mathematical logic The input terminal of circuit module is connected on the output end of signal pre-processing module;
The signal pre-processing module includes pulsed triggering circuit, and the pulsed triggering circuit is used for the received sensing of institute Device signal is converted to square-wave signal;
The mathematical logic circuit module includes counter module, and the counter module receives pulsed triggering circuit output Square-wave signal, complete to square wave signal interval count.
Using above scheme, turn by using sensor institute collected signal of the signal pre-processing module to monitoring revolving speed It is changed to square-wave signal, signal may make to have strong anti-interference ability in transmittance process, in this way, corresponding portion in the present apparatus Connecting line can using coaxial cable, general twisted-pair power cable cable carry out signal connection;It is different from traditional technology, is being reached pair In the case where main pump rotation speed monitoring function, due to not needing using the data processing method for carrying out complicated calculations by single-chip microcontroller, Therefore the present apparatus also have the characteristics that it is low in energy consumption;Meanwhile the multiple components in the present apparatus including are using pure hardware circuit the case where Under, it also can satisfy the needs of main pump rotation speed monitoring, therefore the present apparatus also has that the response time is fast, measurement accuracy is high, highly reliable Advantage.
Embodiment 2:
The present embodiment is further qualified on the basis of embodiment 1, as shown in Figure 1, as a kind of above-described use In the further technical solution of device of nuclear power plant's reactor coolant pump revolving speed processing:
As the specific implementation form of signal pre-processing module, the signal pre-processing module further includes filter circuit, filter Wave circuit is set to the front end of pulsed triggering circuit, and filter circuit is for being filtered sensor signal, the pulse Trigger circuit is used to the output signal of filter circuit being converted to square-wave signal;
The filter circuit includes the LC low-pass filter being sequentially connected in series, RC low-pass filter, active band stop filter, institute State the front end that LC low-pass filter is located at signal source direction of transfer.Using the filter circuit of the above form, can effectively eliminate Interference signal.
As the specific implementation form of pulsed triggering circuit, the pulsed triggering circuit includes integral contrast circuit, zero passage Comparison circuit, signal synthesis circuit and trigger;
The integral contrast circuit and the equal receiving sensor signal of the signal input part of Zero-cross comparator both circuits integrate ratio Signal output end compared with circuit and Zero-cross comparator both circuits is both connected on the signal input part of signal synthesis circuit, the touching The signal input part of hair device is connected with the signal output end of signal synthesis circuit.
As the specific implementation form of counter module, the counter module include counter, control signaling module and Latch;The square-wave signal that the control signaling module is used to receive standard clock signal and pulsed triggering circuit generates, it is described The signal input part of counter is connected with the signal output end of control signaling module, and the data input pin of latch is connected to counting On the data output end of device.
For make the present apparatus it is with the following functions in it is any one or more: verification output correctness, realize switching value Data output, output characterize the current signal function of revolving speed, further include that input terminal is connected with counter module data output end Flash module;
One or more of following device: checking circuit, winding logic is connected on the output end of the Flash module Control circuit, D/A module.The above checking circuit and correct sexual function is exported for verification, winding logic control circuit is directed to out Data output function is measured in pass, and D/A module is to be directed to the current signal function of output characterization revolving speed.
It further include input terminal and pulse to enable the present apparatus quickly to export the low low switch amount signal low with revolving speed of revolving speed The connected relay spacing output circuit of trigger circuit output end.
One or more of following device: protective device, signal decaying is additionally provided in the signal pre-processing module Device, converting switch device, gain control.The above signal attenuation device and gain control may make pulse-triggered Circuit has better signal source, and the protective device is used to carry out each signal processing apparatus or control device one-way or bi-directional Protection, such as realize the protection of static discharge effect, electric current one-way flow function, the converting switch device realizes signal when available The on-off on road controls and obtains different signal transfer modes.
It further include signal-processing board as a kind of integrated design, the signal pre-processing module and mathematical logic circuit Module is both secured to signal-processing board.
Further, the power supply of the present apparatus is set as such as under type: the AC power source of input first passes around lightning protection circuit, Then pass through fuse, by key power switch control power supply on-off, AC power source by switch after, then by EMC filter into Row filtering, is sent into AC/DC module after filtering, then AC/DC module is exported by zener diode, and the power supply exported at this time is 5V DC power supply can be supplied to each electronic component and use.
Further, the present apparatus further includes display panel, and display panel includes main LED, Multifunctional LED and state instruction Lamp.Output valve etc. when main LED is used to show the tachometer value operated normally and routine test.Multifunctional LED is for showing definite value ratio Built-in test speed value when compared with preset value (revolving speed is low low with revolving speed) and routine test.Status indicator lamp is respectively used to device Power on instruction, operation/trystate instruction, revolving speed low (SPEED LOW) and low (SPEED LL) state instruction of revolving speed.Simultaneously On panel be arranged device upper electrical switch, examination lamp switch, inductor signal and stimulus switching switch, built-in stimulus and External stimulus switching switch, analog output switching switchs, built-in testing signal frequency adjusts switch and multi-functional aobvious Show window control switch.In addition, being also provided with external signal input interface and test speed and current signal output interface in panel.
Embodiment 3:
Meanwhile the invention also discloses a kind of method for the processing of nuclear power plant's reactor coolant pump revolving speed, the above realities The realization of the apparatus function of example offer is applied dependent on this method, this method includes the following steps that sequence carries out:
S1, the voltage pulse signal that the sensor for being used to detect revolving speed exports is converted into square-wave signal;
S2, it uses counter module using the square-wave signal and standard clock signal as foundation, obtains rotary speed data.
The above content is combine specific preferred embodiment to the further description of the invention made, and it cannot be said that originally The specific embodiment of invention is only limited to these instructions.For those of ordinary skill in the art to which the present invention belongs, The other embodiments obtained in the case where not departing from technical solution of the present invention, should be included within the scope of the present invention.

Claims (7)

1. a kind of device for the processing of nuclear power plant's reactor coolant pump revolving speed, which is characterized in that including Signal Pretreatment mould The input terminal of block and mathematical logic circuit module, the mathematical logic circuit module is connected to the output end of signal pre-processing module On;
The signal pre-processing module includes pulsed triggering circuit, and the pulsed triggering circuit is used to believe the received sensor of institute Number be converted to square-wave signal;
The mathematical logic circuit module includes counter module, and the counter module receives the side of pulsed triggering circuit output Wave signal is completed to count square wave signal interval;
The pulsed triggering circuit includes integral contrast circuit, Zero-cross comparator circuit, signal synthesis circuit and trigger;
The integral contrast circuit and the equal receiving sensor signal of the signal input part of Zero-cross comparator both circuits, integral contrast electricity The signal output end of road and Zero-cross comparator both circuits is both connected on the signal input part of signal synthesis circuit, the trigger Signal input part be connected with the signal output end of signal synthesis circuit.
2. a kind of device for the processing of nuclear power plant's reactor coolant pump revolving speed according to claim 1, feature exist In the signal pre-processing module further includes filter circuit, and filter circuit is set to the front end of pulsed triggering circuit, filter circuit For being filtered to sensor signal, the pulsed triggering circuit is used for the output signal side of being converted to of filter circuit Wave signal;
The filter circuit includes the LC low-pass filter being sequentially connected in series, RC low-pass filter, active band stop filter, the LC Low-pass filter is located at the front end of signal source direction of transfer.
3. a kind of device for the processing of nuclear power plant's reactor coolant pump revolving speed according to claim 1, feature exist In the counter module includes counter, control signaling module and latch;The control signaling module is for receiving standard The square-wave signal that clock signal and pulsed triggering circuit generate, the signal input part of the counter and the letter of control signaling module Number output end is connected, and the data input pin of latch is connected on the data output end of counter.
4. a kind of device for the processing of nuclear power plant's reactor coolant pump revolving speed according to claim 1, feature exist In further including the Flash module that input terminal is connected with counter module data output end;
One or more of following device: checking circuit, winding logic control is connected on the output end of the Flash module Circuit, D/A module.
5. a kind of device for the processing of nuclear power plant's reactor coolant pump revolving speed according to claim 1, feature exist In further including the relay spacing output circuit that input terminal is connected with pulsed triggering circuit output end.
6. a kind of device for the processing of nuclear power plant's reactor coolant pump revolving speed according to claim 1, feature exist In being additionally provided with one or more of following device in the signal pre-processing module: protective device, signal attenuation device, Converting switch device, gain control.
7. a kind of device for the processing of nuclear power plant's reactor coolant pump revolving speed according to claim 1, feature exist In further including signal-processing board, the signal pre-processing module and mathematical logic circuit module are both secured to signal-processing board.
CN201710408821.2A 2017-06-02 2017-06-02 A kind of device for the processing of nuclear power plant's reactor coolant pump revolving speed Active CN107240426B (en)

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CN110060789B (en) * 2019-04-30 2020-09-01 中广核核电运营有限公司 Reliability monitoring system and rotating speed rack with reliability monitoring function
CN110045142B (en) * 2019-04-30 2021-06-22 中广核核电运营有限公司 Reliability monitoring system, rotating speed rack with reliability monitoring function and system

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CN104019020A (en) * 2014-05-28 2014-09-03 中广核核电运营有限公司 Control system for main pump measurement circuit of digital nuclear power station

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DE19928135A1 (en) * 1999-03-13 2000-09-14 Continental Teves Ag & Co Ohg Motor control circuit for regulating hydraulic pump of motor vehicle braking system, supplies back EMF to high-pass filter and square-wave signal to microprocessor for monitoring and signaling operating status
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