CN107240426A - A kind of device for nuclear power plant's reactor coolant pump rotating speed processing - Google Patents
A kind of device for nuclear power plant's reactor coolant pump rotating speed processing Download PDFInfo
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- CN107240426A CN107240426A CN201710408821.2A CN201710408821A CN107240426A CN 107240426 A CN107240426 A CN 107240426A CN 201710408821 A CN201710408821 A CN 201710408821A CN 107240426 A CN107240426 A CN 107240426A
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- rotating speed
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C17/00—Monitoring; Testing ; Maintaining
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Monitoring And Testing Of Nuclear Reactors (AREA)
Abstract
The invention discloses a kind of device for nuclear power plant's reactor coolant pump rotating speed processing, 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 sensor signal received 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, with strong antijamming capability, low to the types entail of cable, the response time is fast, measurement accuracy is high, highly reliable advantage.
Description
Technical field
The present invention relates to nuclear power plant's reactor coolant pump rotating speed metering equipment technical field, more particularly to one kind is used for
The device of nuclear power plant's reactor coolant pump rotating speed processing.
Background technology
In PWR nuclear power plant, main pump rotating speed is not only the important parameter for characterizing main pump running status, is even more reaction
Heap protection system provides initial data, has very important effect to the safety and operation for ensureing reactor.Therefore, main pump rotating speed
Measuring system is nuclear power plant's important safety level equipment.The key equipment of main pump speed measuring system mainly include speed probe and
Rotating speed processing unit.Wherein, rotating speed processing unit receives the output signal from sensor, and correspondence tachometer value is obtained through processing,
And outputting standard analog signal, while tachometer value and pre-set value are compared into the switch that rear output speed is low and rotating speed is low
Measure signal.In addition, rotating speed processing unit need to perform routine test.
Generally, sensor output signal is voltage pulse signal, and be easily interfered effect of signals, is especially vulnerable to power frequency and does
Disturb the influence in source.Then rotating speed processing unit calculates main pump rotating speed by single-chip microcomputer collection voltages pulse signal using software,
The method needs to carry out scm software V＆V, and single-chip microcomputer reliability is not high, low-response.Currently, rotating speed processing unit, which is received, passes
Sensor signal is using core level coaxial cable connection, and core level coaxial cable cost is higher and not general.In addition, conventional turns
Fast processing unit power consumption is higher, and such as heat dissipation design is unreasonable, is easily caused board and burns out.
In order to avoid drawbacks described above, precision, response time and the reliability of main pump tachometric survey are improved, processing unit is reduced
Power consumption and to design a kind of rotating speed processing unit very necessary.
The content of the invention
The invention provides a kind of device for nuclear power plant's reactor coolant pump rotating speed processing, interference can be effectively filtered out
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 nuclear power plant's reactor coolant pump rotating speed processing that the present invention is provided
Problem is solved by following technical essential：A kind of device for nuclear power plant's reactor coolant pump rotating speed processing, including letter
Number pretreatment module and mathematical logic circuit module, the input of the mathematical logic circuit module are connected to Signal Pretreatment mould
In the output end of block；
The signal pre-processing module includes pulsed triggering circuit, and the pulsed triggering circuit is used for the sensing that will be received
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, the signal collected by using signal pre-processing module to the sensor for monitoring rotating speed turns
Square-wave signal is changed to, may be such that signal has stronger antijamming capability, so, appropriate section in the present apparatus in transmittance process
Connecting line just can using coaxial cable, general twisted-pair power cable cable carry out signal connection；Conventional art is different from, is being reached pair
In the case of main pump rotation speed monitoring function, the data processing method of complicated calculations is carried out by single-chip microcomputer due to that need not use,
Therefore the present apparatus also have it is low in energy consumption the characteristics of；Meanwhile, multiple parts that the present apparatus includes are in the situation using pure hardware circuit
Under, the need for also disclosure satisfy that main pump rotation speed monitoring, therefore the present apparatus is also with the response time is fast, measurement accuracy is high, highly reliable
Advantage.
It is used as a kind of above-described further technology of device for nuclear power plant's reactor coolant pump rotating speed processing
Scheme：
As the form that implements of signal pre-processing module, the signal pre-processing module also includes filter circuit, filter
Wave circuit is arranged at the front end of pulsed triggering circuit, and filter circuit is used to be filtered sensor signal processing, the pulse
Triggers circuit is used to the output signal of filter circuit being converted to square-wave signal；
The filter circuit includes the LC low pass filters, RC low pass filters, active band stop filter, institute being sequentially connected in series
State LC low pass filters and be located at signal source direction of transfer foremost.Using the filter circuit of above form, it can effectively eliminate
Interference signal.
As the form that implements 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 signal input part of Zero-cross comparator both circuits receive sensor signal, integration ratio
Signal output part compared with circuit and Zero-cross comparator both circuits is both connected on the signal input part of signal synthesis circuit, described to touch
The signal input part of hair device is connected with the signal output part of signal synthesis circuit.
As the form that implements of counter module, the counter module include counter, control signal module and
Latch；The control signal module is used for the square-wave signal for receiving standard clock signal and pulsed triggering circuit generation, described
The signal input part of counter is connected with the signal output part of control signal module, and the data input pin of latch is connected to counting
On the data output end of device.
To cause the present apparatus has any one or more in following functions：Verification exports correctness, realizes switching value
Data output, output characterize the current signal function of rotating speed, in addition to input is connected with counter module data output end
Flash modules；
The one or more in following device are connected with the output end of the Flash modules：Checking circuit, winding logic
Control circuit, D/A module.Above checking circuit and for the correct sexual function of verification output, winding logic control circuit is i.e. for opening
Data output function is measured in pass, and D/A module is the current signal function that rotating speed is characterized for output.
To enable the quick output speed of the present apparatus low and the low low switch amount signal of rotating speed, in addition to input and pulse
The connected relay spacing output circuit of triggers circuit output end.
The one or more in following device are additionally provided with the signal pre-processing module：Protection device, signal attenuation
Device, converting switch device, gain control.Above signal attenuation device and gain control may be such that pulse-triggered
Circuit has more preferable signal source, and the protection device is used for unidirectional or two-way to each signal processing apparatus or control device progress
Protection, such as realizes the protection of static discharge effect, electric current one-way flow function, and the converting switch device realizes signal when available
The break-make on road controls the signal transfer modes different with obtaining.
It is used as a kind of integrated design, in addition to signal-processing board, signal pre-processing module and the mathematical logic circuit
Module is both secured to signal-processing board.
Further, the power supply of the present apparatus is set to following manner：The AC power of input first passes around lightning protection circuit,
Then pass through fuse, the break-make of power supply is controlled by button power switch, AC power is entered after switch, then by EMC wave filters
Row filtering, sends into AC/DC modules after filtering, then AC/DC modules are exported by voltage-regulator diode, and the power supply now exported is 5V
Dc source, can be supplied to each electronic component and uses.
Further, the present apparatus also 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 normally run and routine test.Multifunctional LED is used to show definite value ratio
Built-in test speed value during compared with preset value (rotating speed is low and rotating speed is low) and routine test.Status indicator lamp is respectively used to device
Upper electricity is indicated, operation/trystate instruction, rotating speed low (SPEED LOW) and low (SPEED LL) state instruction of rotating speed.Simultaneously
Set on panel device upper electrical switch, examination lamp switch, inductor signal and stimulus switching switch, built-in stimulus and
Outside stimulus switching switch, analog output switching switch, built-in testing signal frequency adjust switch and multi-functional aobvious
Show window controlling switch.In addition, being also provided with external signal input interface and experiment speed and current signal output interface in panel.
Meanwhile, the invention also discloses a kind of method for nuclear power plant's reactor coolant pump rotating speed processing, above dress
The realization put depends on this method, and this method includes the following steps that order is carried out：
S1, by for detect rotating speed sensor export voltage pulse signal be converted to square-wave signal；
S2, use counter module using the square-wave signal and standard clock signal as foundation, obtain rotary speed data.
The invention has the advantages that：
Using above scheme, the signal collected by using signal pre-processing module to the sensor for monitoring rotating speed turns
Square-wave signal is changed to, may be such that signal has stronger antijamming capability, so, appropriate section in the present apparatus in transmittance process
Connecting line just can using coaxial cable, general twisted-pair power cable cable carry out signal connection；Conventional art is different from, is being reached pair
In the case of main pump rotation speed monitoring function, the data processing method of complicated calculations is carried out by single-chip microcomputer due to that need not use,
Therefore the present apparatus also have it is low in energy consumption the characteristics of；Meanwhile, multiple parts that the present apparatus includes are in the situation using pure hardware circuit
Under, the need for also disclosure satisfy that main pump rotation speed monitoring, therefore the present apparatus is also with the response time is fast, measurement accuracy is high, highly reliable
Advantage.
Brief description of the drawings
Fig. 1 is specific real for a kind of one, device for nuclear power plant's reactor coolant pump rotating speed processing of the present invention
Apply the system topological figure of example.
Embodiment
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 nuclear power plant's reactor coolant pump rotating speed processing, it is anti-that one kind is used 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 of circuit module is connected in 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 sensing that will be received
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, the signal collected by using signal pre-processing module to the sensor for monitoring rotating speed turns
Square-wave signal is changed to, may be such that signal has stronger antijamming capability, so, appropriate section in the present apparatus in transmittance process
Connecting line just can using coaxial cable, general twisted-pair power cable cable carry out signal connection；Conventional art is different from, is being reached pair
In the case of main pump rotation speed monitoring function, the data processing method of complicated calculations is carried out by single-chip microcomputer due to that need not use,
Therefore the present apparatus also have it is low in energy consumption the characteristics of；Meanwhile, multiple parts that the present apparatus includes are in the situation using pure hardware circuit
Under, the need for also disclosure satisfy that main pump rotation speed monitoring, therefore the present apparatus is also with 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, being used as a kind of above-described use
In the further technical scheme of device of nuclear power plant's reactor coolant pump rotating speed processing：
As the form that implements of signal pre-processing module, the signal pre-processing module also includes filter circuit, filter
Wave circuit is arranged at the front end of pulsed triggering circuit, and filter circuit is used to be filtered sensor signal processing, the pulse
Triggers circuit is used to the output signal of filter circuit being converted to square-wave signal；
The filter circuit includes the LC low pass filters, RC low pass filters, active band stop filter, institute being sequentially connected in series
State LC low pass filters and be located at signal source direction of transfer foremost.Using the filter circuit of above form, it can effectively eliminate
Interference signal.
As the form that implements 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 signal input part of Zero-cross comparator both circuits receive sensor signal, integration ratio
Signal output part compared with circuit and Zero-cross comparator both circuits is both connected on the signal input part of signal synthesis circuit, described to touch
The signal input part of hair device is connected with the signal output part of signal synthesis circuit.
As the form that implements of counter module, the counter module include counter, control signal module and
Latch；The control signal module is used for the square-wave signal for receiving standard clock signal and pulsed triggering circuit generation, described
The signal input part of counter is connected with the signal output part of control signal module, and the data input pin of latch is connected to counting
On the data output end of device.
To cause the present apparatus has any one or more in following functions：Verification exports correctness, realizes switching value
Data output, output characterize the current signal function of rotating speed, in addition to input is connected with counter module data output end
Flash modules；
The one or more in following device are connected with the output end of the Flash modules：Checking circuit, winding logic
Control circuit, D/A module.Above checking circuit and for the correct sexual function of verification output, winding logic control circuit is i.e. for opening
Data output function is measured in pass, and D/A module is the current signal function that rotating speed is characterized for output.
To enable the quick output speed of the present apparatus low and the low low switch amount signal of rotating speed, in addition to input and pulse
The connected relay spacing output circuit of triggers circuit output end.
The one or more in following device are additionally provided with the signal pre-processing module：Protection device, signal attenuation
Device, converting switch device, gain control.Above signal attenuation device and gain control may be such that pulse-triggered
Circuit has more preferable signal source, and the protection device is used for unidirectional or two-way to each signal processing apparatus or control device progress
Protection, such as realizes the protection of static discharge effect, electric current one-way flow function, and the converting switch device realizes signal when available
The break-make on road controls the signal transfer modes different with obtaining.
It is used as a kind of integrated design, in addition to signal-processing board, signal pre-processing module and the mathematical logic circuit
Module is both secured to signal-processing board.
Further, the power supply of the present apparatus is set to following manner：The AC power of input first passes around lightning protection circuit,
Then pass through fuse, the break-make of power supply is controlled by button power switch, AC power is entered after switch, then by EMC wave filters
Row filtering, sends into AC/DC modules after filtering, then AC/DC modules are exported by voltage-regulator diode, and the power supply now exported is 5V
Dc source, can be supplied to each electronic component and uses.
Further, the present apparatus also 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 normally run and routine test.Multifunctional LED is used to show definite value ratio
Built-in test speed value during compared with preset value (rotating speed is low and rotating speed is low) and routine test.Status indicator lamp is respectively used to device
Upper electricity is indicated, operation/trystate instruction, rotating speed low (SPEED LOW) and low (SPEED LL) state instruction of rotating speed.Simultaneously
Set on panel device upper electrical switch, examination lamp switch, inductor signal and stimulus switching switch, built-in stimulus and
Outside stimulus switching switch, analog output switching switch, built-in testing signal frequency adjust switch and multi-functional aobvious
Show window controlling switch.In addition, being also provided with external signal input interface and experiment speed and current signal output interface in panel.
Embodiment 3：
Meanwhile, the invention also discloses a kind of method for nuclear power plant's reactor coolant pump rotating speed processing, the above is real
The realization for applying the apparatus function of example offer depends on this method, and this method includes the following steps that order is carried out：
S1, by for detect rotating speed sensor export voltage pulse signal be converted to square-wave signal；
S2, use counter module using the square-wave signal and standard clock signal as foundation, obtain rotary speed data.
Above content is to combine the further description that specific preferred embodiment is made to the present invention, it is impossible to assert this
The embodiment of invention is confined to these explanations.For general technical staff of the technical field of the invention,
The other embodiment drawn in the case where not departing from technical scheme, should be included within the scope of the present invention.
Claims (8)
1. a kind of device for nuclear power plant's reactor coolant pump rotating speed processing, it is characterised in that including Signal Pretreatment mould
Block and mathematical logic circuit module, the input of the mathematical logic circuit module are 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 sensor received
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
Ripple signal, completes to count square wave signal interval.
2. a kind of device for nuclear power plant's reactor coolant pump rotating speed processing according to claim 1, its feature exists
In the signal pre-processing module also includes filter circuit, and filter circuit is arranged at the front end of pulsed triggering circuit, filter circuit
For being filtered processing to sensor signal, the pulsed triggering circuit is used for the output signal side of being converted to of filter circuit
Ripple signal；
The filter circuit includes the LC low pass filters, RC low pass filters, active band stop filter, the LC being sequentially connected in series
Low pass filter is located at signal source direction of transfer foremost.
3. a kind of device for nuclear power plant's reactor coolant pump rotating speed processing according to claim 1, its feature exists
In the pulsed triggering circuit includes integral contrast circuit, Zero-cross comparator circuit, signal synthesis circuit and trigger；
The integral contrast circuit and the signal input part of Zero-cross comparator both circuits receive sensor signal, integral contrast electricity
The signal output part 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 part of signal synthesis circuit.
4. a kind of device for nuclear power plant's reactor coolant pump rotating speed processing according to claim 1, its feature exists
In the counter module includes counter, control signal module and latch；The control signal module is used to receive standard
Clock signal and the square-wave signal of pulsed triggering circuit generation, the signal input part of the counter and the letter of control signal module
Number output end is connected, and the data input pin of latch is connected on the data output end of counter.
5. a kind of device for nuclear power plant's reactor coolant pump rotating speed processing according to claim 1, its feature exists
In, in addition to the Flash modules that input is connected with counter module data output end；
The one or more in following device are connected with the output end of the Flash modules：Checking circuit, winding logic control
Circuit, D/A module.
6. a kind of device for nuclear power plant's reactor coolant pump rotating speed processing according to claim 1, its feature exists
In, in addition to the relay spacing output circuit that input is connected with pulsed triggering circuit output end.
7. a kind of device for nuclear power plant's reactor coolant pump rotating speed processing according to claim 1, its feature exists
In being additionally provided with the one or more in following device in the signal pre-processing module：Protection device, signal attenuation device,
Converting switch device, gain control.
8. a kind of device for nuclear power plant's reactor coolant pump rotating speed processing according to claim 1, its feature exists
In in addition to signal-processing board, signal pre-processing module and the mathematical logic circuit module is both secured to signal-processing board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710408821.2A CN107240426B (en) | 2017-06-02 | 2017-06-02 | A kind of device for the processing of nuclear power plant's reactor coolant pump revolving speed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710408821.2A CN107240426B (en) | 2017-06-02 | 2017-06-02 | A kind of device for the processing of nuclear power plant's reactor coolant pump revolving speed |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107240426A true CN107240426A (en) | 2017-10-10 |
| CN107240426B CN107240426B (en) | 2019-03-19 |
Family
ID=59985318
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710408821.2A Active CN107240426B (en) | 2017-06-02 | 2017-06-02 | A kind of device for the processing of nuclear power plant's reactor coolant pump revolving speed |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110045142A (en) * | 2019-04-30 | 2019-07-23 | 中广核核电运营有限公司 | Monitoring reliability system, revolving speed rack and system with monitoring reliability function |
| CN110060789A (en) * | 2019-04-30 | 2019-07-26 | 中广核核电运营有限公司 | Monitoring reliability system and revolving speed rack with monitoring reliability function |
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| CN101976994A (en) * | 2010-09-17 | 2011-02-16 | 三一重工股份有限公司 | Conversion circuit, method and system for detecting phase sequence of three-phase power supply, and motor |
| 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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| GB2072261A (en) * | 1980-02-29 | 1981-09-30 | Daimler Benz Ag | A fuel injection system for internal-combustion engines |
| 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 |
| US20100254505A1 (en) * | 2009-04-01 | 2010-10-07 | Ge-Hitachi Nuclear Energy Americas Llc | Methods and apparatuses for operating nuclear reactors and for determining power levels in the nuclear reactors |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110045142A (en) * | 2019-04-30 | 2019-07-23 | 中广核核电运营有限公司 | Monitoring reliability system, revolving speed rack and system with monitoring reliability function |
| CN110060789A (en) * | 2019-04-30 | 2019-07-26 | 中广核核电运营有限公司 | Monitoring reliability system and revolving speed rack with monitoring reliability 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 |
Also Published As
| Publication number | Publication date |
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| CN107240426B (en) | 2019-03-19 |
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