Electromagnetic valve detection method and electromagnetic valve detection device for main steam isolation valve of nuclear power plant

A detection method and technology of detection device, which are applied in the direction of measurement device, measurement of electricity, measurement of electric variables, etc., can solve the problems of lack of clear judgment standards for solenoid valve action time and spring adjustment strength, and lack of nuclear power plant main steam isolation valve, etc. The time and spring adjustment strength are clear, the test results are accurate and reliable, and the performance judgment is accurate.

Inactive Publication Date: 2014-05-14
CHINA GENERAL NUCLEAR POWER CORP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a kind of Solenoid valve detection method for nuclear power plant main steam isolation valve with accurate judgment of solenoid valve performance, simple and reliable operation, and clear judgment standards for solenoid valve action time and spring adjustment strength

Method used

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  • Electromagnetic valve detection method and electromagnetic valve detection device for main steam isolation valve of nuclear power plant
  • Electromagnetic valve detection method and electromagnetic valve detection device for main steam isolation valve of nuclear power plant
  • Electromagnetic valve detection method and electromagnetic valve detection device for main steam isolation valve of nuclear power plant

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Embodiment 1

[0038] Embodiment 1, a solenoid valve detection method for the main steam isolation valve of a nuclear power plant, is to connect the solenoid valve to be tested in series into a detection circuit, and the detection circuit includes a DC power supply and a standard The resistance, solenoid valve, DC power supply and standard resistance are connected through wires to form a detection circuit, and a voltage detection mechanism for detecting the voltage versus time curve of the standard resistance is connected in parallel at both ends of the standard resistance. In this embodiment, the voltage detection mechanism selects an oscilloscope, and adjusts the parameters of the oscilloscope. In this embodiment, the parameters of the oscilloscope are set to: select channel 1; horizontal position, 500ms; vertical position, 500mv; starting from the rising edge, the trigger value is 1.2V. Then turn on the detection circuit, collect the voltage waveform (voltage curve) at both ends of the sta...

Embodiment 2

[0043] Example 2, such as figure 2 As shown, a solenoid valve detection device for the main steam isolation valve of a nuclear power plant includes a DC power supply 1 and a standard resistor 4 connected in series with the solenoid valve to be tested. The solenoid valve 3, the DC power supply 1 and the standard resistor 4 are connected by wires to form a A detection circuit, and a voltage detection mechanism is connected in parallel at both ends of the standard resistance 4, and the voltage detection mechanism is an oscilloscope 2. In this embodiment, the parameters of the oscilloscope 2 are set as follows: select channel 1; horizontal position, 500 ms; vertical position, 500 mv; starting from the rising edge, the trigger value is 1.2 V. The parameters of the oscilloscope can also choose other values, and the selection requirement is to be able to display completely and accurately, as long as this requirement is met.

[0044] The voltage of the DC power supply 1 in the detec...

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Abstract

The invention discloses an electromagnetic valve detection method and an electromagnetic valve detection device for a main steam isolation valve of a nuclear power plant. The detection method comprises the following steps: an electromagnetic valve to be detected is connected in series to a detection circuit, and the detection circuit detects a curve of change of current with time in the closing and releasing process of the electromagnetic valve and gets an operating current IA value and a rated current IC value; and the performance state of the electromagnetic valve is judged according to the ratio of the operating current to the rated current. The detection device comprises a direct-current power supply, a standard resistor and a voltage detection mechanism. The direct-current power supply, the electromagnetic valve to be detected and the standard resistor are connected in series into a loop through a wire, and the voltage detection mechanism is connected in parallel to the two ends of the standard resistor. The detection method of the invention can be used for accurately judging the performance of the electromagnetic valve, has a clear judgment standard on the time of action and the spring adjustment strength of the electromagnetic valve, and is simple and reliable in operation. The detection device has the advantages of simple structure, reliable detection and convenient use.

Description

technical field [0001] The invention belongs to the technical field of million-kilowatt nuclear power, and relates to a detection method and a detection device for a main steam isolation valve of a nuclear power plant, in particular to a detection method and a detection device for an electromagnetic valve used for a main steam isolation valve of a nuclear power plant. Background technique [0002] The main steam isolation valve of a nuclear power plant is an important safety device on the main steam pipeline. Under all expected normal or accidental conditions, it will be closed within 5 seconds after the shutdown signal is generated to ensure the safe isolation of the main steam. The main solenoid valve and test solenoid valve on the main steam isolation valve are important components of the main steam isolation valve, which realize the on / off control and periodic testing of the main steam isolation valve. The purpose of the periodic test is mainly to verify whether the main...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/00
Inventor 景建国吕群贤张敏车银辉
Owner CHINA GENERAL NUCLEAR POWER CORP
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