CN218883160U - Online monitoring device for valve of nuclear power plant - Google Patents
Online monitoring device for valve of nuclear power plant Download PDFInfo
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- CN218883160U CN218883160U CN202223179796.0U CN202223179796U CN218883160U CN 218883160 U CN218883160 U CN 218883160U CN 202223179796 U CN202223179796 U CN 202223179796U CN 218883160 U CN218883160 U CN 218883160U
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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
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Abstract
The utility model discloses a nuclear power plant valve on-line monitoring device, which comprises a signal port, an ADC unit and a main processor, wherein the signal port comprises a three-phase current transmitter port, a three-phase voltage transmitter port and a single-circuit direct current transmitter port; the three-phase current transmitter is configured to acquire three-phase power current signals of the valve driving mechanism; the three-phase voltage transmitter is configured to acquire three-phase power voltage signals of the valve driving mechanism; the single-path direct current transmitter is configured to collect valve switching value; and the acquired signal received by the signal port is output to the main processor after being converted by the ADC unit. The utility model provides a nuclear power plant's valve on-line monitoring device improves valve real-time supervision's comprehensiveness and accuracy, the work load of the artifical investigation that has significantly reduced.
Description
Technical Field
The utility model relates to a valve monitoring technology field of nuclear power plant especially relates to a valve on-line monitoring device of nuclear power plant.
Background
Nuclear power plants are power plants that generate electrical energy from energy released by nuclear fission or fusion reactions. In order to protect the health of workers and residents around the nuclear power station, the design, construction and operation of the nuclear power station adopt the principle of deep defense, and multiple protection is provided on equipment and measures so as to ensure that the nuclear power station can effectively control the output power of a reactor, and the reactor fuel assembly can be sufficiently cooled when various natural disasters such as earthquake, tsunami, flood and the like occur or artificial fire, explosion and the like occur, so that the radioactive substances are prevented from being discharged to the environment. Valves are devices for controlling a flowing medium (e.g. water, steam) and function to connect or disconnect the medium; controlling the flow, pressure or direction of the medium and protecting the pipeline and equipment. A large amount of valve equipment is used in nuclear power plants, which undertakes important safety and production functions. The valve failure can cause the nuclear power unit to be unstable in state, reduce power and even stop, and great hidden danger is brought to the safe and stable operation of the unit.
The valve diagnosis technology is that under the condition that the valve is not disassembled, various mechanical and electrical sensors are installed on the valve, and a special valve diagnosis tester and data analysis software are adopted to test and analyze valve performance characteristic parameters so as to realize the periodic evaluation of the valve performance state. The current devices for carrying out the diagnostics of the electric and pneumatic valves during overhaul must work during overhaul, in the vicinity of the valves, with the following drawbacks: 1) The test must be carried out on the valve side, the time and the labor are consumed by installing a sensor and the like, and meanwhile, the risk of contamination of personnel and the like exists; 2) During the daily operation of the unit, the valve in the nuclear island cannot be diagnosed; 3) The monitored signals are incomplete, and the vibration and internal leakage information of the valve cannot be monitored.
The above disclosure of the background art is only used for assisting understanding of the concept and technical solutions of the present invention, and it does not necessarily belong to the prior art of the present patent application, nor does it necessarily give technical teaching; the above background should not be used to assess the novelty and inventive aspects of the present application in the absence of express evidence that the above disclosure is published prior to the filing date of the present patent application.
SUMMERY OF THE UTILITY MODEL
In order to overcome the deficiencies in the prior art, the utility model provides a nuclear power plant valve on-line monitoring device, concrete technical scheme is as follows: the nuclear power plant valve on-line monitoring device comprises a signal port, an ADC unit and a main processor, wherein the input end of the ADC unit is electrically connected with the signal port, the output end of the ADC unit is electrically connected with the main processor, and the signal port comprises a three-phase current transmitter port, a three-phase voltage transmitter port and a single-circuit direct current transmitter port; the three-phase current transmitter port is used for being connected with a three-phase current transmitter, and the three-phase current transmitter is configured to collect three-phase power current signals of the valve driving mechanism; the port of the three-phase voltage transmitter is used for being connected with the three-phase voltage transmitter, and the three-phase voltage transmitter is configured to collect three-phase power voltage signals of the valve driving mechanism; the port of the single-circuit direct current transmitter is used for being connected with the single-circuit direct current transmitter, and the single-circuit direct current transmitter is configured to collect valve switching values; the signal port receives an acquisition signal, the acquisition signal is converted by the ADC unit and then output to the main processor, the main processor is configured to enable the signal to be output to the Ethernet, and the online monitoring device is additionally arranged on a power distribution cabinet corresponding to a valve of a nuclear power plant.
Further, valve and switch board belong to nuclear power plant risk area, the switch board can supply power and control a plurality of valves simultaneously, three phase current transmitter, three phase voltage changer and one way direct current changer all establish in the switch board.
Furthermore, the signal port further comprises an acoustic emission and vibration sensor port, a temperature sensor port and a full-bridge strain gauge port, the acoustic emission and vibration sensor port is used for being connected to the acoustic emission and vibration sensor, and the acoustic emission and vibration sensor is configured to collect acoustic emission and vibration signals of the valve body corresponding to the valve; the temperature sensor port is used for accessing the temperature sensor, and the temperature sensor is configured to collect temperature signals of an inlet and an outlet of a valve; the full-bridge strain gage port is used for being connected into the full-bridge strain gage, and the full-bridge strain gage is configured to collect valve rod thrust and torque signals corresponding to the valve.
Further, the temperature sensor, the full-bridge strain gauge, the acoustic emission and vibration sensor are arranged around the valve in advance.
Furthermore, the main processor adopts an architecture system combining ARM and FPGA and has a cache function.
Furthermore, the nuclear power plant valve on-line monitoring device further comprises a wireless transmission module, wherein the wireless transmission module is electrically connected with the main processor and used for wirelessly outputting signals.
Furthermore, the nuclear power plant valve on-line monitoring device further comprises a mobile terminal, wherein the mobile terminal is provided with a wireless receiving module corresponding to the wireless transmission module, so that the mobile terminal is in wireless communication connection with the main processor.
Further, the three-phase current transmitter is provided with 3 current collecting channels, and the maximum collecting frequency of the current collecting channels is 10kHz; the three-phase voltage transmitter is provided with 3 voltage acquisition channels, and the acquisition frequency of the three-phase voltage transmitter is 10kHz at most.
Further, the temperature sensor adopts a platinum resistor for temperature signal acquisition.
Further, the ADC unit employs 24-bit resolution.
Compared with the prior art, the utility model has the advantages of it is following: the comprehensiveness and the accuracy of real-time monitoring of the valve are improved, and the workload of manual investigation is greatly reduced.
Drawings
Fig. 1 is a schematic flow diagram of an on-line monitoring device for a valve of a nuclear power plant provided by an embodiment of the present invention.
Wherein the reference numerals are: 1-power port, 2-three-phase current transmitter port, 3-three-phase voltage transmitter port, 4-single-path direct current transmitter port, 5-acoustic emission and vibration sensor port, 6-temperature sensor port and 7-full-bridge strain gauge port.
Detailed Description
In order to make the technical solution of the present invention better understood, the technical solution of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall belong to the protection scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion.
In an embodiment of the present invention, an online monitoring device for a nuclear power plant valve is provided, which includes a signal port, an ADC unit and a main processor, wherein the ADC unit adopts 24-bit resolution, an input end of the ADC unit is electrically connected to the signal port, and an output end of the ADC unit is electrically connected to the main processor, referring to fig. 1, the signal port includes a power port 1, a three-phase current transducer port 2, a three-phase voltage transducer port 3 and a single-circuit dc current transducer port 4; the three-phase current transmitter port is used for being connected with a three-phase current transmitter, and the three-phase current transmitter is configured to collect three-phase power current signals of the valve driving mechanism; the port of the three-phase voltage transmitter is used for being connected with the three-phase voltage transmitter, and the three-phase voltage transmitter is configured to collect three-phase power voltage signals of the valve driving mechanism; the port of the single-circuit direct current transmitter is used for being connected with the single-circuit direct current transmitter, and the single-circuit direct current transmitter is configured to collect valve switching values;
specifically, the following three measurement channels are formed:
a current collection channel: 3 current acquisition channels are configured, and three-phase power current signals of the valve driving mechanism can be acquired by matching with a three-phase alternating current transmitter, and the acquisition frequency can reach 10kHz at most;
a voltage acquisition channel: 3 voltage acquisition channels are configured, and a three-phase voltage transmitter is matched to acquire three-phase power voltage signals of the valve driving mechanism, wherein the acquisition frequency can reach 10kHz at most;
switching value acquisition channel: 1 switching value acquisition channel is configured, and the valve switching value can be acquired by matching with a single-path direct current transmitter.
In this embodiment, can gather three-phase current, three-phase voltage, on-off control signal information from electric actuator power line and signal line, above 8 passageways gather electrical signal, wherein 3 passageway accessible current transformer gather three-phase current, 3 passageway accessible voltage transformer gather three-phase voltage, 2 passageways can gather valve on-off signal through node or current transformer.
The on-line monitoring device comprises a signal port, an ADC unit, a main processor, an ARM and FPGA combined framework system and has a cache function, the signal port receives an acquisition signal, the ADC unit converts the signal and outputs the signal to the main processor, the main processor is configured to enable the signal to be output to the Ethernet, and the on-line monitoring device is additionally arranged on a power distribution cabinet corresponding to a nuclear power plant valve.
Valve and switch board belong to nuclear power plant risk area, the switch board can supply power and control a plurality of valves simultaneously, three phase current transmitter, three phase voltage changer and one way direct current changer all establish in the switch board.
In an embodiment of the present invention, the signal port further includes an acoustic emission and vibration sensor port 5, a temperature sensor port 6 and a full-bridge strain gauge port 7, the acoustic emission and vibration sensor port is used for accessing the acoustic emission and vibration sensor, and the acoustic emission and vibration sensor is configured to collect the acoustic emission and vibration signal of the valve body corresponding to the valve; the temperature sensor port is used for accessing the temperature sensor, and the temperature sensor is configured to collect temperature signals of an inlet and an outlet of a valve; the full-bridge strain gage port is used for being connected into the full-bridge strain gage, and the full-bridge strain gage is configured to collect valve rod thrust and torque signals corresponding to the valve. The temperature sensor, the full-bridge strain gauge and the acoustic emission and vibration sensor are arranged around the valve in advance.
Specifically, the following three measurement channels are also formed:
acoustic emission/vibration acquisition channels: 2 acoustic emission/vibration acquisition channels are configured, acoustic emission and vibration signals of the valve body can be acquired by matching with an acoustic emission/vibration sensor, and the acquisition frequency can reach 100kHz at most; 2 channels can be shared, wherein the acquisition of acoustic emission signals: collecting acoustic emission signals before and after the valve leaks through an acoustic emission sensor arranged on the valve body, and evaluating whether the valve has internal leakage and the internal leakage degree; collecting vibration signals: collecting vibration data of a valve body through a vibration acceleration sensor arranged on the valve, and evaluating the vibration of the valve;
a temperature acquisition channel: 2 temperature acquisition channels are configured, and temperature signals of an inlet and an outlet of the valve can be acquired by matching with a PT100 platinum resistor; whether the valve has internal leakage or not is also evaluated through the temperature information measured by being installed on the valve body.
A mechanical collection channel: 2 mechanics acquisition channels are configured, the valve rod thrust and torque signals can be acquired by matching with a full-bridge strain gauge, the supply voltage of the strain gauge is +/-5V, the accuracy is not less than +/-0.2% of FS, and the acquisition frequency can reach 4kHz at most.
The specific structure of the signal port is as follows:
the utility model discloses an embodiment, the online monitoring device of nuclear power plant's valve still includes wireless transmission module and mobile terminal, wireless transmission module with the main processing ware electricity is connected, and it is used for wireless output signal. The mobile terminal is provided with a wireless receiving module corresponding to the wireless transmission module, so that the mobile terminal is in wireless communication connection with the main processor. The nuclear power plant valve on-line monitoring device comprises an Ethernet interface, and can realize a multi-point networking function, so that a plurality of subsequent acquisition modules can be conveniently networked, and on-line monitoring is realized. Of course, the mobile terminal may also access the ethernet to acquire the collection information uploaded by the main processor.
The on-line monitoring device for the nuclear power plant valve has the working environment of 0-50 ℃, the size of 190 multiplied by 140 multiplied by 30mm, the signal input port of the on-line monitoring device is in the form of a 3.81mm screw type wiring terminal, and the installation mode of the on-line monitoring device is 35mm guide rail installation or panel installation.
The utility model provides a nuclear power plant valve on-line monitoring device can realize more comprehensive and continuous monitoring of valve performance and carry out subsequent comprehensive evaluation; for example, whether the motor of the electric head has abrasion defects or not can be judged by monitoring the current/voltage of the valve; based on the thrust/torque of the valve rod and the power of the electric head, the output of the electric head can be evaluated; whether the valve has internal leakage can be evaluated by monitoring the acoustic emission and temperature signals of the valve body; by means of the vibration signal, the valve vibration status can be evaluated.
The utility model provides a nuclear power plant valve on-line monitoring device can gather three-phase current, three-phase voltage, on-off control signal information from electric actuator power line and signal line, gathers information such as valve rod thrust/moment of torsion, acoustic emission, vibration, temperature at the valve body side; the valve electric signal, mechanical signal, acoustic emission signal, vibration and temperature acquisition can be realized; the defects of the current valve testing equipment are overcome, the current/voltage, the switching value and the valve rod thrust/torque of the electric valve are realized, and the vibration, the internal leakage and the like of the pneumatic valve or the electric valve are continuously monitored in real time; and on the valve measuring point, manual or automatic triggering acquisition action is carried out when the valve acts or the valve data needs to be acquired, so that data acquisition is completed, and data is provided for subsequent valve performance evaluation.
The above mentioned is only the preferred embodiment of the present invention, not the limitation of the patent scope, all the equivalent structures or equivalent processes that the contents of the specification and the drawings are utilized are directly or indirectly applied to other related technical fields, and all the same principles are included in the patent protection scope of the present invention.
Claims (10)
1. The nuclear power plant valve on-line monitoring device is characterized by comprising a signal port, an ADC unit and a main processor, wherein the input end of the ADC unit is electrically connected with the signal port, the output end of the ADC unit is electrically connected with the main processor, and the signal port comprises a three-phase current transmitter port, a three-phase voltage transmitter port and a single-circuit direct current transmitter port; the three-phase current transmitter port is used for being connected with a three-phase current transmitter, and the three-phase current transmitter is configured to collect three-phase power current signals of the valve driving mechanism; the port of the three-phase voltage transmitter is used for being connected with the three-phase voltage transmitter, and the three-phase voltage transmitter is configured to collect three-phase power voltage signals of the valve driving mechanism; the port of the single-circuit direct current transmitter is used for being connected with the single-circuit direct current transmitter, and the single-circuit direct current transmitter is configured to collect valve switching values; the signal port receives an acquisition signal, the acquisition signal is converted by the ADC unit and then output to the main processor, the main processor is configured to enable the signal to be output to the Ethernet, and the online monitoring device is additionally arranged on a power distribution cabinet corresponding to a valve of a nuclear power plant.
2. The on-line monitoring device for the nuclear power plant valve according to claim 1, wherein the valve and the power distribution cabinet belong to a risk area of a nuclear power plant, the power distribution cabinet can simultaneously supply power and control a plurality of valves, and a three-phase current transmitter, a three-phase voltage transmitter and a one-way direct current transmitter are arranged in the power distribution cabinet.
3. The on-line nuclear power plant valve monitoring device according to claim 1, wherein the signal port further includes an acoustic emission and vibration sensor port, a temperature sensor port, and a full bridge strain gauge port, the acoustic emission and vibration sensor port is configured to be connected to the acoustic emission and vibration sensor, and the acoustic emission and vibration sensor is configured to collect acoustic emission and vibration signals of a valve body corresponding to a valve; the temperature sensor port is used for accessing the temperature sensor, and the temperature sensor is configured to collect temperature signals of an inlet and an outlet of a valve; the full-bridge strain gage port is used for being connected into the full-bridge strain gage, and the full-bridge strain gage is configured to collect valve rod thrust and torque signals corresponding to the valve.
4. The on-line nuclear power plant valve monitoring device of claim 3, wherein the temperature sensor, full-bridge strain gauge, acoustic emission and vibration sensor are arranged around the valve in advance.
5. The on-line monitoring device for the nuclear power plant valve according to claim 1, wherein the main processor adopts an architecture system combining an ARM and an FPGA and has a cache function.
6. The on-line monitoring device for the nuclear power plant valve according to claim 1, further comprising a wireless transmission module, wherein the wireless transmission module is electrically connected with the main processor and used for wirelessly outputting a signal.
7. The on-line monitoring device for the nuclear power plant valve according to claim 6, further comprising a mobile terminal, wherein the mobile terminal is provided with a wireless receiving module corresponding to the wireless transmission module, so that the mobile terminal is in wireless communication connection with the main processor.
8. The on-line monitoring device for the nuclear power plant valve according to claim 1, wherein the three-phase current transmitter is configured with 3 current collecting channels, and the collecting frequency is 10kHz at most; the three-phase voltage transmitter is provided with 3 voltage acquisition channels, and the acquisition frequency of the three-phase voltage transmitter is 10kHz at most.
9. The on-line monitoring device for the nuclear power plant valve according to claim 3, wherein the temperature sensor adopts a platinum resistor for temperature signal acquisition.
10. The on-line nuclear power plant valve monitoring device of claim 1, wherein the ADC unit employs a 24-bit resolution.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223179796.0U CN218883160U (en) | 2022-11-29 | 2022-11-29 | Online monitoring device for valve of nuclear power plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223179796.0U CN218883160U (en) | 2022-11-29 | 2022-11-29 | Online monitoring device for valve of nuclear power plant |
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| Publication Number | Publication Date |
|---|---|
| CN218883160U true CN218883160U (en) | 2023-04-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202223179796.0U Active CN218883160U (en) | 2022-11-29 | 2022-11-29 | Online monitoring device for valve of nuclear power plant |
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| CN (1) | CN218883160U (en) |
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- 2022-11-29 CN CN202223179796.0U patent/CN218883160U/en active Active
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