CN113049243B - Method and device for testing response time of valve - Google Patents
Method and device for testing response time of valve Download PDFInfo
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- CN113049243B CN113049243B CN201911378787.4A CN201911378787A CN113049243B CN 113049243 B CN113049243 B CN 113049243B CN 201911378787 A CN201911378787 A CN 201911378787A CN 113049243 B CN113049243 B CN 113049243B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
- G01M13/003—Machine valves
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H17/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves, not provided for in the preceding groups
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Abstract
The disclosure belongs to the technical field of nuclear power maintenance, and particularly relates to a method and a device for testing valve response time. The method comprises the following steps: in a first preset time period, obtaining a vibration signal value of a moving part of the valve to be detected at each detection moment in the first preset time period; taking the vibration signal value which is greater than the vibration signal threshold value in a first preset time period as an effective vibration signal value; and determining the response time of the valve to be tested according to the time corresponding to the effective vibration signal values. According to the embodiment of the disclosure, the response time of the valve switch is tested during the shutdown or running period of the unit through a non-intrusive measurement method, the switch response performance state of the valve can be accurately mastered through the change of the vibration signal value of the valve moving part, the potential safety hazard of a system is eliminated, and the safe and economic operation index of industrial enterprises including nuclear power plants is improved. In addition, the embodiment of the disclosure can effectively filter interference data and reduce data processing amount, thereby improving the efficiency and accuracy of data processing.
Description
Technical Field
The invention belongs to the technical field of nuclear power maintenance, and particularly relates to a method and a device for testing valve response time.
Background
The valve is an actuating element in a process control system in the industrial field, is widely applied to system loops of a nuclear power plant and a conventional power plant, the performance of the valve is directly related to the economic operation index of the power plant, and the failure of certain safety system valves can also cause serious safety accidents and great economic loss.
The valves are various in types and extremely wide in application, and are generally divided into regulating valves, stop valves, one-way valves and the like according to the application; generally, there are two main categories, namely automatic valves and driving valves, classified by category. The fast acting valve is not specific to a certain type or a certain application valve, and is a general name of a type or a plurality of types of valves with extremely fast switching speed, and the switching time of the fast acting valve is generally less than 1 second, and some valves even reach dozens of milliseconds. Due to the special performance of the fast acting valve, the fast acting valve usually has important system cut-off and safety control functions in a process system. Because the fast-acting valve is very fast in opening and closing action, a conventional detection method (such as stopwatch timing and the like) cannot meet the requirement of accurate testing, so that system operation maintenance personnel cannot accurately know the valve response time, necessary overhaul and adjustment work cannot be arranged in advance, and hidden dangers are left for safe operation of a system. Therefore, how to accurately test the corresponding time of the fast acting valve becomes an urgent problem to be solved.
Disclosure of Invention
To overcome the problems in the related art, a method and apparatus for testing valve response time are provided.
According to an aspect of an embodiment of the present disclosure, there is provided a method of testing a valve response time, the method including:
in a first preset time period, obtaining a vibration signal value of a moving part of a valve to be detected at each detection moment in the first preset time period;
taking the vibration signal value which is greater than the vibration signal threshold value in the first preset time period as an effective vibration signal value;
and determining the response time of the valve to be tested according to the time corresponding to the effective vibration signal values.
In one possible implementation, the method further includes:
in a second preset time period when the valve to be tested does not act, obtaining a vibration signal value of the moving part of the valve to be tested at each detection moment in the second preset time period;
and determining a vibration signal threshold value according to the vibration signal value of each detection moment in the second preset time period.
In a possible implementation manner, determining a vibration signal threshold according to a vibration signal value at each detection time within the second preset time period includes:
and taking the maximum value of the vibration signal values of all detection moments in the second preset time period as a vibration signal threshold value.
In a possible implementation manner, determining the response time of the valve to be tested according to the time corresponding to a plurality of effective vibration signal values includes:
determining the effective vibration signal value with the largest value and the second largest value in the plurality of effective vibration signal values;
and taking the time difference between the moments corresponding to the maximum value and the second maximum value of the effective vibration signal as the response time of the valve to be tested.
According to another aspect of the embodiments of the present disclosure, there is provided an apparatus for testing a response time of a valve, the apparatus including:
the first acquisition module is used for acquiring vibration signal values of the moving part of the valve to be detected at each detection moment in a first preset time period;
the first determination module is used for taking the vibration signal value which is greater than the vibration signal threshold value in the first preset time period as an effective vibration signal value;
and the second determining module is used for determining the response time of the valve to be tested according to the moments corresponding to the effective vibration signal values.
In one possible implementation, the apparatus further includes:
the second acquisition module is used for acquiring a vibration signal value of the moving part of the valve to be detected at each detection moment in a second preset time period when the valve to be detected does not act;
and the third determining module is used for determining a vibration signal threshold value according to the vibration signal value at each detection moment in the second preset time period.
In one possible implementation manner, the third determining module includes:
and the first determining submodule is used for taking the maximum value in the vibration signal values of all the detection moments in the second preset time period as a vibration signal threshold value.
In one possible implementation manner, the second determining module includes:
a second determination submodule for determining a largest value and a second largest value of the plurality of valid vibration signal values;
and the third determining submodule is used for taking the time difference between the moments corresponding to the effective vibration signal value with the maximum value and the second maximum value as the response time of the valve to be tested.
According to another aspect of embodiments of the present disclosure, there is provided a non-transitory computer-readable storage medium having stored thereon computer program instructions which, when executed by a processor, implement the above-described method.
The invention has the beneficial effects that: according to the embodiment of the disclosure, the response time of the valve switch is tested during the shutdown or operation period of the unit through a non-intrusive measurement method, the switch response performance state of the valve can be accurately mastered through the change of the vibration signal value of the valve moving part, so that human errors possibly caused by a conventional detection method are effectively avoided, the potential safety hazard of a system is eliminated, and the safe and economic operation indexes of industrial enterprises including nuclear power plants are improved. In addition, the embodiment of the disclosure can effectively filter the interference data and reduce the data processing amount, thereby improving the efficiency and accuracy of data processing.
Drawings
FIG. 1 is a flow chart illustrating a method of testing valve response time in accordance with an exemplary embodiment.
Fig. 2 is a schematic diagram illustrating testing of valve response time according to an example application.
Fig. 3 is a block diagram illustrating an apparatus for testing valve response time in accordance with an exemplary embodiment.
Detailed Description
The invention is further described in detail below with reference to the drawings and specific embodiments.
FIG. 1 is a flow chart illustrating a method of testing valve response time in accordance with an exemplary embodiment. The method may be applied to a terminal device such as a notebook computer, a desktop computer, or a server, and the type of the terminal device is not limited in the embodiment of the present disclosure, as shown in fig. 1, the method may include:
And 101, taking the vibration signal value which is greater than the vibration signal threshold value in the first preset time period as an effective vibration signal value.
And 102, determining the response time of the valve to be tested according to the time corresponding to the effective vibration signal values.
In the embodiment of the present disclosure, the moving component of the valve to be tested may be a component that generates vibration when the valve starts to operate, for example, the moving component may include a valve core or a valve rod, etc.
Fig. 2 is a schematic diagram illustrating testing of valve response time according to one application example. As an example of the embodiment, as shown in fig. 2, an accelerometer 22 may be disposed on the moving part 21 of the valve 20 to be tested (for example, an accelerometer may be disposed on a flat surface of a valve core of the valve 20 to be tested), during a first period, the valve action may be controlled, the accelerometer 22 may generate an analog signal reflecting vibration of the moving part 21 of the valve, the accelerometer 22 may be connected to a data acquisition device 23, the data acquisition device 23 may be connected to a terminal device 24, the data acquisition device 23 may have a filtering function and an analog-to-digital conversion function, the data acquisition device 23 may acquire the analog signal generated by the accelerometer 22, filter and analog-to-digital convert the analog signal, and may output a digital signal representing vibration of the moving part 21 of the valve to the terminal device 24, the terminal device 24 may acquire the digital signal from the data acquisition device 23, and the vibration signal value corresponding to each time instant within the first period of time can be determined. The terminal device 24 may pre-store a vibration signal threshold value, which may be represented as an average value of vibration signal values of the valve moving part 21 in a case where the valve is not operated, and the terminal device 24 may regard a vibration signal value greater than the vibration signal threshold value within a first preset time period as a valid vibration signal value. Therefore, the interference data can be effectively filtered, the data processing amount is reduced, and the efficiency and the accuracy of data processing are improved.
The terminal device 24 may determine the response time of the valve 20 to be tested according to the plurality of effective vibration signal values, for example, the terminal device 24 may determine the effective vibration signal value with the largest value and the second largest value among the plurality of effective vibration signal values, and may use the time difference between the times corresponding to the effective vibration signal value with the largest value and the second largest value as the response time of the valve 20 to be tested. In one possible implementation, the terminal device 24 may also have a display function, and the terminal device 24 may display the determined response time.
It should be noted that, the terminal device may also use a first time corresponding to an earliest effective vibration signal value among the plurality of effective vibration signal values as a time when the valve starts to operate, use a second time corresponding to a largest vibration signal value among the remaining plurality of effective vibration signal values as a time when the valve moving component moves in place, and use a time difference between the first time and the second time as a response time of the valve to be measured.
According to the embodiment of the disclosure, the response time of the valve switch is tested during the shutdown or operation period of the unit through a non-intrusive measurement method, the switch response performance state of the valve can be accurately mastered through the change of the vibration signal value of the valve moving part, so that human errors possibly caused by a conventional detection method are effectively avoided, the potential safety hazard of a system is eliminated, and the safe and economic operation indexes of industrial enterprises including nuclear power plants are improved. In addition, the embodiment of the disclosure can effectively filter interference data and reduce data processing amount, thereby improving the efficiency and accuracy of data processing.
In one possible implementation, the method may further include: and in a second preset time period when the valve to be tested does not act, acquiring a vibration signal value of the moving part of the valve to be tested at each detection moment in the second preset time period. And determining a vibration signal threshold value according to the vibration signal value of each detection moment in the second preset time period.
For example, the vibration signal threshold may be determined before the response time of the valve is measured, in a second preset time period (for example, 60 seconds) when the valve to be measured does not act, a signal generated by an accelerometer mounted on a moving component of the valve may be a background noise signal, the data acquisition device may acquire the background noise signal generated by the accelerometer, perform filtering and analog-to-digital conversion on the analog signal, and output a processed digital signal to the terminal device, the terminal device determines, according to the processed digital signal, a vibration signal value corresponding to each detection time in the second time period, and the terminal device may use a maximum value (or an average value, a median value, and the like of the vibration signal values at each detection time in the second preset time period) in the vibration signal values at each detection time in the second preset time period as the vibration signal threshold. Therefore, the vibration signal data when the valve acts are filtered by taking the background noise signal when the valve does not act as the vibration signal threshold of the reference, so that the non-relevant data can be effectively filtered, and the efficiency and the accuracy of data processing are improved.
FIG. 3 is a block diagram illustrating an apparatus for testing valve response time in accordance with an exemplary embodiment. As shown in fig. 3, the apparatus may include:
the first obtaining module 30 is configured to obtain, in a first preset time period, a vibration signal value of the moving component of the valve to be detected at each detection time in the first preset time period.
The first determining module 31 is configured to use the vibration signal value greater than the vibration signal threshold in the first preset time period as the valid vibration signal value.
And the second determining module 32 is configured to determine the response time of the valve to be tested according to the time corresponding to the plurality of effective vibration signal values.
In one possible implementation, the apparatus further includes:
and the second acquisition module is used for acquiring the vibration signal value of the moving part of the valve to be detected at each detection moment in a second preset time period when the valve to be detected does not act.
And the third determining module is used for determining a vibration signal threshold according to the vibration signal value of each detection moment in the second preset time period.
In one possible implementation manner, the third determining module includes:
and the first determining submodule is used for taking the maximum value in the vibration signal values of all the detection moments in the second preset time period as a vibration signal threshold value.
In one possible implementation manner, the second determining module includes:
and the second determining submodule is used for determining two effective vibration signal values with the maximum value in the plurality of effective vibration signal values.
And the third determining submodule is used for taking the time difference between the moments corresponding to the two effective vibration signal values with the maximum values as the response time of the valve to be tested.
The description of the apparatus has already been set forth in the corresponding content of the method, and is not repeated here.
The present disclosure may be systems, methods, and/or computer program products. The computer program product may include a computer-readable storage medium having computer-readable program instructions embodied thereon for causing a processor to implement various aspects of the present disclosure.
The computer-readable storage medium may be a tangible device that can hold and store the instructions for use by the instruction execution device. The computer readable storage medium may be, for example, but not limited to, an electronic memory device, a magnetic memory device, an optical memory device, an electromagnetic memory device, a semiconductor memory device, or any suitable combination of the foregoing. More specific examples (a non-exhaustive list) of the computer readable storage medium would include the following: a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), a Static Random Access Memory (SRAM), a portable compact disc read-only memory (CD-ROM), a Digital Versatile Disc (DVD), a memory stick, a floppy disk, a mechanical coding device, such as punch cards or in-groove projection structures having instructions stored thereon, and any suitable combination of the foregoing. Computer-readable storage media as used herein is not to be construed as transitory signals per se, such as radio waves or other freely propagating electromagnetic waves, electromagnetic waves propagating through a waveguide or other transmission medium (e.g., optical pulses through a fiber optic cable), or electrical signals transmitted through electrical wires.
The computer-readable program instructions described herein may be downloaded from a computer-readable storage medium to a respective computing/processing device, or to an external computer or external storage device via a network, such as the internet, a local area network, a wide area network, and/or a wireless network. The network may include copper transmission cables, fiber optic transmission, wireless transmission, routers, firewalls, switches, gateway computers and/or edge servers. The network adapter card or network interface in each computing/processing device receives the computer-readable program instructions from the network and forwards the computer-readable program instructions for storage in a computer-readable storage medium in the respective computing/processing device.
Computer program instructions for carrying out operations of the present disclosure may be assembler instructions, Instruction Set Architecture (ISA) instructions, machine-related instructions, microcode, firmware instructions, state setting data, or source or object code written in any combination of one or more programming languages, including an object oriented programming language such as Smalltalk, C + + or the like and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The computer-readable program instructions may execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any type of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or the connection may be made to an external computer (for example, through the Internet using an Internet service provider). In some embodiments, the electronic circuitry that can execute the computer-readable program instructions implements aspects of the present disclosure by utilizing the state information of the computer-readable program instructions to personalize the electronic circuitry, such as a programmable logic circuit, a Field Programmable Gate Array (FPGA), or a Programmable Logic Array (PLA).
Various aspects of the present disclosure are described herein with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the disclosure. It will be understood that each block of the flowchart illustrations and/or block diagrams, and combinations of blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer readable program instructions.
These computer-readable program instructions may be provided to a processor of a general purpose computer, special purpose computer, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions/acts specified in the flowchart and/or block diagram block or blocks. These computer-readable program instructions may also be stored in a computer-readable storage medium that can direct a computer, programmable data processing apparatus, and/or other devices to function in a particular manner, such that the computer-readable medium storing the instructions comprises an article of manufacture including instructions which implement the function/act specified in the flowchart and/or block diagram block or blocks.
The computer readable program instructions may also be loaded onto a computer, other programmable data processing apparatus, or other devices to cause a series of operational steps to be performed on the computer, other programmable apparatus or other devices to produce a computer implemented process such that the instructions which execute on the computer, other programmable apparatus or other devices implement the functions/acts specified in the flowchart and/or block diagram block or blocks.
The flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to various embodiments of the present disclosure. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of instructions, which comprises one or more executable instructions for implementing the specified logical function(s). In some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems that perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
The foregoing description of the embodiments of the present disclosure has been presented for purposes of illustration and description, but is not intended to be exhaustive or limited to the embodiments disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The terms used herein were chosen in order to best explain the principles of the embodiments, the practical application, or technical improvements to the techniques in the marketplace, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. It is intended that the present invention cover the modifications and variations of this invention provided they come within the scope of the appended claims and their equivalents.
Claims (7)
1. A method of testing valve response time, the method comprising:
in a first preset time period, obtaining a vibration signal value of a moving part of a valve to be detected at each detection moment in the first preset time period;
taking the vibration signal value which is greater than the vibration signal threshold value in the first preset time period as an effective vibration signal value;
determining the response time of the valve to be tested according to the time corresponding to the effective vibration signal values;
determining the response time of the valve to be tested according to the time corresponding to the effective vibration signal values, wherein the determining comprises the following steps:
determining the effective vibration signal value with the largest value and the second largest value in the plurality of effective vibration signal values;
and taking the time difference between the moments corresponding to the maximum value and the second maximum value of the effective vibration signal as the response time of the valve to be tested.
2. The method of claim 1, further comprising:
in a second preset time period when the valve to be tested does not act, obtaining a vibration signal value of the moving part of the valve to be tested at each detection moment in the second preset time period;
and determining a vibration signal threshold value according to the vibration signal value of each detection moment in the second preset time period.
3. The method according to claim 2, wherein determining the vibration signal threshold according to the vibration signal value at each detection time within the second preset time period comprises:
and taking the maximum value of the vibration signal values at each detection moment in the second preset time period as a vibration signal threshold value.
4. An apparatus for testing valve response time, the apparatus comprising:
the first acquisition module is used for acquiring a vibration signal value of a moving component of the valve to be detected at each detection moment in a first preset time period;
the first determining module is used for taking the vibration signal value which is greater than the vibration signal threshold value in the first preset time period as an effective vibration signal numerical value;
the second determining module is used for determining the response time of the valve to be tested according to the time corresponding to the effective vibration signal values;
the second determining module comprises:
a second determination submodule, configured to determine a largest effective vibration signal value and a second largest effective vibration signal value among the plurality of effective vibration signal values;
and the third determining submodule is used for taking the time difference between the moments corresponding to the maximum value and the second maximum value of the effective vibration signal value as the response time of the valve to be tested.
5. The apparatus of claim 4, further comprising:
the second acquisition module is used for acquiring a vibration signal value of the moving part of the valve to be detected at each detection moment in a second preset time period when the valve to be detected does not act;
and the third determining module is used for determining a vibration signal threshold according to the vibration signal value of each detection moment in the second preset time period.
6. The apparatus of claim 5, wherein the third determining module comprises:
and the first determining submodule is used for taking the maximum value in the vibration signal values of all the detection moments in the second preset time period as a vibration signal threshold value.
7. A non-transitory computer readable storage medium having stored thereon computer program instructions, wherein the computer program instructions, when executed by a processor, implement the method of any one of claims 1 to 3.
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| CN201911378787.4A CN113049243B (en) | 2019-12-27 | 2019-12-27 | Method and device for testing response time of valve |
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