CN114062770A - Inching control method and inching control system of electric gate valve and storage medium - Google Patents
Inching control method and inching control system of electric gate valve and storage medium Download PDFInfo
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- CN114062770A CN114062770A CN202111328788.5A CN202111328788A CN114062770A CN 114062770 A CN114062770 A CN 114062770A CN 202111328788 A CN202111328788 A CN 202111328788A CN 114062770 A CN114062770 A CN 114062770A
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- 238000000034 method Methods 0.000 title claims abstract description 41
- 230000008569 process Effects 0.000 claims abstract description 13
- 230000008859 change Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013135 deep learning Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/165—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
- G01R19/16566—Circuits and arrangements for comparing voltage or current with one or several thresholds and for indicating the result not covered by subgroups G01R19/16504, G01R19/16528, G01R19/16533
- G01R19/16571—Circuits and arrangements for comparing voltage or current with one or several thresholds and for indicating the result not covered by subgroups G01R19/16504, G01R19/16528, G01R19/16533 comparing AC or DC current with one threshold, e.g. load current, over-current, surge current or fault current
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/04—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
- F16K37/0025—Electrical or magnetic means
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- Mechanical Engineering (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
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- Indication Of The Valve Opening Or Closing Status (AREA)
Abstract
In order to solve the technical problem that the electric gate valve cannot be reliably closed due to the fact that the electric gate valve is closed through manual inching operation after a position indicator sends a closing-in-place signal in the prior art, an embodiment of the invention provides an inching control method, a inching control system and a storage medium of the electric gate valve, wherein the inching control method, the inching control system and the storage medium comprise the following steps: s1, acquiring inching current signals generated in the process of inching closing of the electric gate valve; s2, judging whether the difference value of the peak value of the inching current signal and the peak value of the prior inching current signal is smaller than a prior value or not, and if so, returning to S1; if not, sending a power-off signal of the electric gate valve to control the power-off of the electric gate valve. The embodiment of the invention realizes automatic 'closing' of the electric gate valve and avoids the problem that the electric gate valve cannot be closed reliably due to manual inching operation for closing the electric gate valve.
Description
Technical Field
The invention relates to a inching control method and system of an electric gate valve and a storage medium.
Background
The electric gate valve is a pipeline accessory for controlling medium flow in a pipeline by changing the internal flow cross section area thereof, and plays roles of connecting or cutting off the medium, preventing the medium from flowing backwards, adjusting parameters such as pressure or flow of the medium, separating, mixing or distributing the medium, preventing the medium pressure from exceeding a fixed value, ensuring the safety of the pipeline or equipment and the like in a nuclear power plant. Electrically-operated gate valves serve as a safety boundary for nuclear systems, requiring that they be able to close reliably, i.e., a "zero-leak" seal, to ensure system safety and no leakage. When some electric gate valves are closed in place, the situation that the electric gate valves cannot be closed can often occur, the medium in the pipeline cannot be completely blocked, and some safety accidents occur.
Under normal conditions, when the electric gate valve is not tightly closed, an operator can have the following treatment methods: (1) the method comprises the following steps: an operator can manually adjust the valve position indicator according to the condition that the valve is not closed in place, and the adjustment is continuously carried out until the valve is closed; (2) method 2, the electric gate valve control system is provided with a corresponding hardware control circuit, a corresponding 'valve closing inching' operation button is set, and the power-on time of the electric gate valve which is inched by the operation button once is set. After the electric gate valve is closed in place, the position indicator can send out a signal of closing in place, and an operator of the valve manually moves the valve for a plurality of times according to the signal of closing in place, so that the closing is enhanced until the electric gate valve is really closed.
The basic principle of the method 1 and the method 2 is that after the position indicator of the electric gate valve sends a closing in-place signal, the motor of the electric gate valve is instantly electrified through inching to obtain larger inching current, so that the torque of the motor of the electric gate valve is increased (the torque of the motor is in a certain proportion to the current), larger power is provided for a valve plate of the electric gate valve, and the problem that the electric gate valve cannot be closed to a certain extent can be solved through inching for a plurality of times. However, such an operation has the following disadvantages: (1) in order to ensure that the electric motor can be turned off, the inching frequency is not fixed, and the reliable turning off can not be realized completely by the operation experience; (2) after the valve is closed in place, manual inching operation is needed, so that the potential safety hazard of a nuclear system and serious hazards such as motor stalling and burning caused by improper operation of personnel exist; (3) the automatic closing of the valve cannot be realized through random inching times; (4) if the inching process, the power supply of the electric gate valve has a problem, and the motor cannot be protected in time. (5) In the method 1, the valve operator manually adjusts the valve, which is limited by the environment, and when the valve is in a nuclear environment or at high temperature and high pressure, the valve position indicator is manually adjusted on site, so that great potential safety hazards exist for the operator.
Disclosure of Invention
In order to solve the technical problem that the electric gate valve cannot be reliably closed due to the fact that the electric gate valve is closed through manual inching operation after a position indicator sends a closing-in-place signal in the prior art, the embodiment of the invention provides an inching control method and system of the electric gate valve and a storage medium.
The embodiment of the invention is realized by the following technical scheme:
in a first aspect, an embodiment of the present invention provides a jog control method for an electric gate valve, including:
s1, acquiring inching current signals generated in the process of inching closing of the electric gate valve;
s2, judging whether the difference value of the peak value of the inching current signal and the peak value of the prior inching current signal is smaller than a prior value or not, and if so, returning to S1; if not, sending a power-off signal of the electric gate valve to control the power-off of the electric gate valve.
Further, before the step S1, the method further includes: after receiving a closing-in-place signal sent by a position indicator of the electric gate valve, sending a jog control signal to the electric gate valve at a certain time interval to enable the electric gate valve to execute jog operation.
Further, the inching current signal is an effective value signal of three-phase current.
Further, the certain time interval is 0.5-1.5 seconds.
In a second aspect, an embodiment of the present invention provides a jog control system for an electric gate valve, including:
the acquisition unit is used for acquiring inching current signals generated by the electric gate valve in the inching closing process; and
the judging unit is used for judging whether the difference value between the peak value of the inching current signal and the peak value of the prior inching current signal is smaller than the prior value or not, and if yes, the difference value returns to the acquisition unit; if not, sending a power-off signal of the electric gate valve to control the power-off of the electric gate valve.
Further, the method also comprises the following steps:
and the command sending unit is used for sending a jog control signal to the electric gate valve at a certain time interval after receiving a close-in-place signal sent by a position indicator of the electric gate valve so as to enable the electric gate valve to execute jog operation.
In a third aspect, an embodiment of the present invention provides a jog control system for an electric gate valve, including:
the power supply unit is used for supplying power to the current acquisition unit, the signal acquisition unit and the controller;
the current acquisition unit is used for acquiring inching current signals generated by the electric gate valve in the inching closing process;
the signal acquisition unit is used for acquiring a position indicator closing position signal of the electric gate valve; and
the controller is used for judging whether the difference value between the peak value of the inching current signal and the peak value of the prior inching current signal is smaller than the prior value or not, and if yes, the controller returns to the acquisition unit; if not, sending a power-off signal of the electric gate valve to control the power-off of the electric gate valve.
Further, the controller is further configured to send a jog control signal to the electric gate valve at a certain time interval after receiving a close-in-place signal sent by a position indicator of the electric gate valve, so that the electric gate valve performs a jog operation.
Further, the inching current signal is an effective value signal of three-phase current.
In a fourth aspect, an embodiment of the present invention provides a computer-readable storage medium, on which instructions are stored, and when the instructions are executed on a computer, a inching control method of the electric gate valve is performed.
Compared with the prior art, the embodiment of the invention has the following advantages and beneficial effects:
according to the inching control method, the inching control system and the storage medium of the electric gate valve, after the position indicator sends the closing in-place signal, inching current signals generated in the inching closing process of the electric gate valve are collected; and judging whether the difference value between the peak value of the inching current signal and the peak value of the prior inching current signal is smaller than a prior value or not, so that the automatic 'closing' of the electric gate valve is realized, and the problem that the electric gate valve cannot be reliably closed due to the fact that the electric gate valve is closed by manual inching operation is avoided.
Drawings
In order to more clearly illustrate the technical solutions of the exemplary embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and that for those skilled in the art, other related drawings can be obtained from these drawings without inventive effort.
Fig. 1 is a flow chart of a inching control method of an electric gate valve.
Fig. 2 is a schematic view of a jog control system of an electric gate valve.
Fig. 3 is a schematic structural diagram of another inching control system of a movable gate valve.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples and accompanying drawings, and the exemplary embodiments and descriptions thereof are only used for explaining the present invention and are not meant to limit the present invention.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, it will be apparent to one of ordinary skill in the art that: it is not necessary to employ these specific details to practice the present invention. In other instances, well-known structures, circuits, materials, or methods have not been described in detail so as not to obscure the present invention.
Throughout the specification, reference to "one embodiment," "an embodiment," "one example," or "an example" means: the particular features, structures, or characteristics described in connection with the embodiment or example are included in at least one embodiment of the invention. Thus, the appearances of the phrases "one embodiment," "an embodiment," "one example" or "an example" in various places throughout this specification are not necessarily all referring to the same embodiment or example. Furthermore, the particular features, structures, or characteristics may be combined in any suitable combination and/or sub-combination in one or more embodiments or examples. Further, those of ordinary skill in the art will appreciate that the illustrations provided herein are for illustrative purposes and are not necessarily drawn to scale. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
In the description of the present invention, the terms "front", "rear", "left", "right", "upper", "lower", "vertical", "horizontal", "upper", "lower", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and therefore, should not be construed as limiting the scope of the present invention.
Examples
The problems in the prior art are that: after the position indicator of the electric gate valve sends out a closing in-place signal, the electric gate valve is not really closed, and the electric gate valve needs to be continuously closed by adopting manual inching operation.
In order to solve the technical problem that the electric gate valve cannot be reliably closed due to the fact that the electric gate valve is closed through manual inching operation after a position indicator sends a closing position signal in the prior art, referring to fig. 1 to 3, in a first aspect, an embodiment of the present invention provides an inching control method for an electric gate valve, including: s1, acquiring inching current signals generated in the process of inching closing of the electric gate valve; s2, judging whether the difference value of the peak value of the inching current signal and the peak value of the prior inching current signal is smaller than a prior value or not, and if so, returning to S1; if not, sending a power-off signal of the electric gate valve to control the power-off of the electric gate valve.
After a position indicator of the electric gate valve sends out a closing in-place signal, when the electric gate valve is not completely closed or is closed to the greatest extent, the variation trend of inching current signals generated by inching operation is a curve with a peak value, if the electric gate valve is not closed to the greatest extent after two inching operations, the variation trends of the inching current signals of the two inching operations are similar, the peak values are basically the same, the basically same means that the difference value of the peak values of the inching current signals of the two inching operations can be ignored; optionally, the prior inching current signal may be an inching current signal when the electric gate valve is not "closed" after two adjacent inching operations; the signal interval may be a signal interval of the inching current signal when the electric gate valve is not "closed" after the inching operation, which is obtained by machine deep learning.
When the inching current signal is the inching current signal when the electric gate valve is not closed after two adjacent inching operations, if the electric gate valve is closed after two adjacent inching operations, the difference value between the peak value of the inching current signal of the second inching operation and the peak value of the inching current signal of the first inching operation is larger than or equal to the prior value.
Therefore, in the embodiment of the invention, after the position indicator sends the closing-in-place signal, inching current signals generated in the inching closing process of the electric gate valve are collected; and judging whether the difference value between the peak value of the inching current signal and the peak value of the prior inching current signal is smaller than a prior value or not, so that the automatic 'closing' of the electric gate valve is realized, and the problem that the electric gate valve cannot be reliably closed due to the fact that the electric gate valve is closed by manual inching operation is avoided.
Optionally, before the step S1, the method further includes: s0. receives the close position signal from the position indicator of the electric gate valve, and sends inching control signal to the electric gate valve at certain time intervals to make the electric gate valve execute inching operation.
Further, the inching current signal is an effective value signal of three-phase current.
When the inching current signal is an effective value signal of three-phase current, the inching current signal is a curve with a peak value; when the electric gate valve is not closed after two adjacent inching operations, the change trends of inching current signals of the two adjacent inching operations are similar, and a negligible error value exists between two peak values; when the electric gate valve is closed after two adjacent inching operations, the change trends of inching current signals of the two adjacent inching operations are similar, and an error value larger than or equal to a prior value exists between two peak values.
Further, the certain time interval is 0.5-1.5 seconds.
Optionally, according to practical verification, the control effect is better when the time interval is 1 second.
In a second aspect, an embodiment of the present invention provides a inching control system for an electric gate valve, which is shown in fig. 2 and includes:
the acquisition unit is used for acquiring inching current signals generated by the electric gate valve in the inching closing process; and
the judging unit is used for judging whether the difference value between the peak value of the inching current signal and the peak value of the prior inching current signal is smaller than the prior value or not, and if yes, the difference value returns to the acquisition unit; if not, sending a power-off signal of the electric gate valve to control the power-off of the electric gate valve.
Further, the method also comprises the following steps:
and the command sending unit is used for sending a jog control signal to the electric gate valve at a certain time interval after receiving a close-in-place signal sent by a position indicator of the electric gate valve so as to enable the electric gate valve to execute jog operation.
In a third aspect, an embodiment of the present invention provides a inching control system for an electric gate valve, as shown in fig. 3, including:
the power supply unit is used for supplying power to the current acquisition unit, the signal acquisition unit and the controller;
the current acquisition unit is used for acquiring inching current signals generated by the electric gate valve in the inching closing process;
the signal acquisition unit is used for acquiring a position indicator closing position signal of the electric gate valve; and
the controller is used for judging whether the difference value between the peak value of the inching current signal and the peak value of the prior inching current signal is smaller than the prior value or not, and if yes, the controller returns to the acquisition unit; if not, sending a power-off signal of the electric gate valve to control the power-off of the electric gate valve.
Further, the controller is further configured to send a jog control signal to the electric gate valve at a certain time interval after receiving a close-in-place signal sent by a position indicator of the electric gate valve, so that the electric gate valve performs a jog operation.
Further, the inching current signal is an effective value signal of three-phase current.
Optionally, for the current collection unit: collecting effective value signals of three-phase current of the electric gate valve by adopting a high-precision and rapid current sensor; optionally, the control unit is composed of an FPGA/DSP chip.
The three-phase current effective value of the power supply circuit of the electric gate valve is detected in real time through a built-in high-precision rapid measurement current unit, the three-phase current effective value is transmitted to a control unit consisting of an FPGA/DSP chip, whether the difference value between the peak value of the inching current signal and the peak value of the prior inching current signal is smaller than the prior value or not is judged, and if not, the controller controls the electric gate valve to be powered off so as to control the motor of the electric gate valve to obtain larger motor torque, so that the purpose of firmly closing the electric gate valve is achieved.
In a fourth aspect, an embodiment of the present invention provides a computer-readable storage medium, on which instructions are stored, and when the instructions are executed on a computer, a inching control method of the electric gate valve is performed.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. A inching control method of an electric gate valve is characterized by comprising the following steps:
s1, acquiring inching current signals generated in the process of inching closing of the electric gate valve;
s2, judging whether the difference value of the peak value of the inching current signal and the peak value of the prior inching current signal is smaller than a prior value or not, and if so, returning to S1; if not, sending a power-off signal of the electric gate valve to control the power-off of the electric gate valve.
2. The jog control method of a power gate valve according to claim 1, wherein said step S1 is preceded by the step of: after receiving a closing-in-place signal sent by a position indicator of the electric gate valve, sending a jog control signal to the electric gate valve at a certain time interval to enable the electric gate valve to execute jog operation.
3. The jog control method of the electric gate valve according to claim 1 or 2, wherein said jog current signal is an effective value signal of a three-phase current.
4. The inching control method of a power gate valve according to claim 3, wherein the certain time interval is 0.5 to 1.5 seconds.
5. A jog control system of an electric gate valve, comprising:
the acquisition unit is used for acquiring inching current signals generated by the electric gate valve in the inching closing process; and
the judging unit is used for judging whether the difference value between the peak value of the inching current signal and the peak value of the prior inching current signal is smaller than the prior value or not, and if yes, the difference value returns to the acquisition unit; if not, sending a power-off signal of the electric gate valve to control the power-off of the electric gate valve.
6. The inching control system of a power gate valve as claimed in claim 5, further comprising:
and the command sending unit is used for sending a jog control signal to the electric gate valve at a certain time interval after receiving a close-in-place signal sent by a position indicator of the electric gate valve so as to enable the electric gate valve to execute jog operation.
7. A jog control system of an electric gate valve, comprising:
the power supply unit is used for supplying power to the current acquisition unit, the signal acquisition unit and the controller;
the current acquisition unit is used for acquiring inching current signals generated by the electric gate valve in the inching closing process;
the signal acquisition unit is used for acquiring a position indicator closing position signal of the electric gate valve; and
the controller is used for judging whether the difference value between the peak value of the inching current signal and the peak value of the prior inching current signal is smaller than the prior value or not, and if yes, the controller returns to the acquisition unit; if not, sending a power-off signal of the electric gate valve to control the power-off of the electric gate valve.
8. The jog control system of claim 7, wherein said controller is further configured to send a jog control signal to said power gate valve at a predetermined time interval after receiving a close position signal from a position indicator of said power gate valve to cause said power gate valve to perform a jog operation.
9. The jog control system of electric gate valve according to claim 7, wherein said jog current signal is an effective value signal of three-phase current.
10. A computer-readable storage medium having stored thereon instructions for performing the inching control method of a power gate valve according to any one of claims 1 to 4 when the instructions are executed on a computer.
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| CN202111328788.5A CN114062770A (en) | 2021-11-10 | 2021-11-10 | Inching control method and inching control system of electric gate valve and storage medium |
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| CN202111328788.5A CN114062770A (en) | 2021-11-10 | 2021-11-10 | Inching control method and inching control system of electric gate valve and storage medium |
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