Electric valve connector and control device for debugging and diagnosing electric switch valve

Abstract

The invention discloses an electric valve connector for debugging and diagnosing an electric switch valve and a control device, and relates to the technical field of debugging and diagnosing of electric valves. The electric valve connector comprises a three-phase voltage output interface, a three-phase current mutual inductance unit, a three-phase current output interface, a control command input interface, and a three-phase alternating current input interface, a controllable power switch, a phase sequence adjusting unit and a three-phase alternating current output interface which are electrically connected in sequence. When the MCC cabinet is unavailable, the electric switch valve can be remotely / locally operated and controlled and debugged / diagnosed by utilizing on-site maintenance or a temporary power supply, so that the practicability is improved, and practical application and popularization are facilitated.

Description

Technical Field

[0001] The present invention belongs to the technical field of electric valve debugging and diagnosis, and in particular relates to an electric valve connector and a control device for debugging and diagnosing an electric switch valve. Background Art

[0002] In process systems, electric on-off valves must be debugged (i.e., measuring, recording, and adjusting parameters such as switching time, valve travel, travel switch action / reset value, and torque switch action / reset value) after installation or maintenance. Only after qualified debugging (i.e., the parameters of the electric on-off valve meet the design requirements) can they be put into operation in the process system. During the debugging process, the electric on-off valve needs to be frequently controlled and driven to measure and adjust parameters. In addition, when diagnosing the parameters of the electric on-off valve, it is also necessary to control and drive the electric on-off valve to move the full stroke according to diagnostic needs, and collect relevant data during the operation of the electric on-off valve. The collected data can then be used to analyze and calculate the parameters of the electric on-off valve. Therefore, whether during the debugging process or the diagnosis process of the electric on-off valve, the electric on-off valve must be controlled and driven to move the full stroke as required.

[0003] Currently, during debugging / diagnosis, electric on / off valves must and can only be operated remotely in the electric on / off valve MCC (Motor Control Center) cabinet or by a DCS (Distributed Control System) operator / engineer station. This requires a team of personnel to measure, record, and adjust the parameters of the electric on / off valve at the location of the electric on / off valve during the debugging / diagnosis process, and another team of personnel to operate the electric on / off valve at the MCC cabinet or DCS side according to the instructions (such as valve opening instructions, valve closing instructions, and stop instructions) from the local personnel (i.e., the former team of personnel). However, in nuclear power plants, electric on-off valves, MMC cabinets, or DCS systems are located in separate buildings, which are far apart and separated by multiple rooms. This means that the two groups of personnel can only communicate via wired telephones. Consequently, each commissioning / diagnosis of an electric on-off valve requires the temporary installation of a wired telephone, which must pass through multiple rooms. This results in a high labor cost, a long time required to complete the commissioning / diagnosis of a single electric on-off valve, and the risk of damage to the valve or even burnout of the motor due to communication failures between the two locations. Furthermore, when the MCC cabinet or upstream power supply is reversed for maintenance (i.e., the MCC cabinet is unavailable), the operation of the electric on-off valve is restricted, and there is also the problem of being unable to conduct on-site commissioning / diagnosis of the electric on-off valve. Summary of the Invention

[0004] The purpose of the present invention is to provide an electric valve connector and control device for debugging and diagnosing an electric switch valve, so as to solve the problem that the existing electric switch valve debugging / diagnosis scheme cannot operate and control the electric switch valve on site and debug / diagnose the electric switch valve when the MCC cabinet is available.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A first aspect of the present invention provides an electric valve connector for debugging and diagnosing an electric switch valve, comprising a connector socket, a three-phase voltage output port, a three-phase current mutual sensing unit, a three-phase current output port, a control command input port, and a connector plug, wherein the connector socket is used to respectively connect to a three-phase AC power supply and an electric valve switch control circuit in an electric valve MCC cabinet; the connector plug is used to connect to a three-phase AC power connector of an electric valve actuator; the connector socket is connected to the connector plug; a three-phase AC cable is passed through the current sensing hole of the three-phase current mutual sensing unit and is located between the connector socket and the connector plug;

[0007] The three-phase voltage output port is connected to the three-phase voltage sampling point between the connector socket and the connector plug, and is used to output the three-phase voltage sampling signal of the three-phase alternating current used to power the electric switch valve;

[0008] The three-phase current output port is connected to the output end of the three-phase current mutual induction unit and is used to output the three-phase current sampling signal of the three-phase alternating current for the power switch valve;

[0009] The control command input port is connected to the electric valve switch control circuit in the electric valve MCC cabinet through the connector socket, and is used to input control instructions for debugging / diagnosing the electric switch valve into the electric valve switch control circuit.

[0010] Based on the above invention content, a new electric valve connection solution is provided, which is capable of operating and controlling the electric switch valve to debug / diagnose the electric switch valve when the MCC cabinet is available. The new electric valve connection solution includes a connector socket, a three-phase voltage output port, a three-phase current mutual induction unit, a three-phase current output port, a control command input port and a connector plug. Through their connection relationship and mutual cooperation, when the MCC cabinet is available, the electric switch valve can be remotely / locally operated and controlled and debug / diagnosed by means of the electric valve official power supply and the original control circuit, thereby improving practicality and facilitating practical application and promotion.

[0011] In one possible design, a valve state input port and a valve state output port are further included, wherein the valve state input port is connected to the stroke / torque switch of the electric on / off valve via a connector plug, the valve state input port is also connected to the electric valve MCC cabinet via a connector socket, and the valve state input port is also connected to the valve state output port;

[0012] The valve status output port is used to output the valve status of the stroke / torque switch of the electric switching valve.

[0013] A second aspect of the present invention provides a control device for debugging and diagnosing an electric switching valve, comprising a lower computer and the electric valve connector for debugging and diagnosing an electric switching valve as described in the first aspect, wherein the lower computer comprises a panel and a data acquisition control board, and the panel is provided with external interfaces and button switches respectively connected to the data acquisition control board, the external interfaces comprising a valve state input interface for connecting to a stroke / torque switch of the electric switching valve, a valve opening / stroke input interface for connecting to a valve opening / stroke sensor of the electric switching valve, a valve stem thrust input interface for connecting to a thrust sensor of the electric switching valve, a valve stem torque input interface for connecting to a torque sensor of the electric switching valve, an electric valve actuator current input interface for connecting to a three-phase current output interface of the electric valve connector, an electric valve actuator voltage input interface for connecting to a three-phase voltage output interface of the electric valve connector, and a control command output interface for connecting to a control command input interface of the electric valve connector;

[0014] Push button switch, used to generate hard commands for debugging / diagnosing electric on / off valves;

[0015] The data acquisition control board is used to send control instructions for debugging / diagnosing the electric switch valve to the electric valve connector according to the hard command;

[0016] Electric valve connector, used to transmit control instructions to the electric valve MCC cabinet, and transmit three-phase current sampling signals and three-phase voltage sampling signals to the data acquisition control board;

[0017] The data acquisition control board is also used to collect valve status, valve opening / stroke, valve stem thrust, valve stem torque, electric valve actuator current based on three-phase current sampling signals, electric valve actuator voltage based on three-phase voltage sampling signals, and control instructions that need to be output through the external interface, so as to analyze and process the collected data and obtain the debugging / diagnostic analysis results of the electric switch valve.

[0018] In one possible design, the button switch includes a point-operated valve-opening button switch for pressing to generate a valve-opening hard command and an automatic reset button, a valve-opening button switch for pressing to generate a valve-opening hard command and a self-locking holding button, a point-operated valve-closing button switch for pressing to generate a valve-closing hard command and an automatic reset button, a valve-closing button switch for pressing to generate a valve-closing hard command and a self-locking holding button, a control switching button switch for pressing to switch between remote control hard commands and local control hard commands and a self-locking holding button, and / or an emergency stop button switch for pressing to generate an emergency stop hard command and a self-locking holding button, wherein the remote control hard command is used to indicate that only the valve-opening / closing soft command from the upper computer is accepted, the local control hard command is used to indicate that only the valve-opening / closing hard command from the button switch is accepted, and the emergency stop hard command is used to indicate the cancellation and locking of the valve-opening / closing control instruction.

[0019] In one possible design, the data acquisition control board is also used to cancel and lock the issuance of the open / close valve control command when an alarm condition is determined to occur until the alarm condition is found to disappear, wherein the alarm conditions include overcurrent, reversal, abnormality, phase loss, three-phase imbalance, reverse sequence and / or emergency shutdown.

[0020] In one possible design, determining that an alarm condition has occurred includes:

[0021] According to the current size of the electric valve actuator, if the current value of any phase, any two phases or three phases is found to be greater than the preset overcurrent protection current threshold, it is determined that an overcurrent situation has occurred;

[0022] According to the valve status, if it is found that the valve feedback status is inconsistent with the output open / close valve control instruction, it is determined that a reversal situation has occurred; or according to the valve opening / stroke, if it is found that the valve opening / stroke change trend is inconsistent with the output open / close valve control instruction, it is determined that a reversal situation has occurred;

[0023] According to the valve status, if the valve feedback status is found to be abnormal, it is determined that an abnormal situation has occurred;

[0024] According to the current size of the electric valve actuator when the three-phase AC power is turned on, if any phase current value is found to be zero, it is determined that a phase loss occurs;

[0025] According to the current size of the electric valve actuator, if the imbalance of the three-phase current value is found to be greater than the preset imbalance threshold, it is determined that a three-phase imbalance occurs;

[0026] According to the phase sequence of the three-phase AC power supply input to the electric valve connector, if the phase sequence of the three-phase AC power supply is found to be reversed, it is determined that a reverse sequence situation occurs;

[0027] When an emergency stop command is received, it is determined that an emergency stop situation occurs, wherein the emergency stop command is used to instruct to cancel and lock the issuance of an open / close valve control instruction.

[0028] In one possible design, the lower computer also includes an indicator light and / or an alarm connected to the data acquisition control board, wherein the indicator light includes a valve opening position indicator light that lights up when the electric switch valve is found to be in the open position according to the valve status, a valve closing position indicator light that lights up when the electric switch valve is found to be in the closed position according to the valve status, and / or a phase sequence abnormality indicator light that lights up when the phase sequence of the three-phase AC power supply input to the electric valve connector is found to be reversed according to the phase sequence of the three-phase AC power supply, and the alarm is used to trigger an alarm action when it is determined that an overcurrent condition, reversal condition, abnormal condition, phase loss condition, three-phase imbalance condition, reverse sequence condition and / or emergency shutdown condition occurs.

[0029] In one possible design, the lower computer also includes a rechargeable battery, and the button switch includes a power switch, one end of the power switch is connected to the output end of the rechargeable battery, and the other end of the power switch is connected to the power supply end of the data acquisition control board.

[0030] In a possible design, the collected data is analyzed and processed to obtain debugging / diagnostic analysis results of the electric on / off valve, including:

[0031] According to the collected three-phase current and three-phase voltage, the active power and / or power factor of the electric switch valve are calculated and stored;

[0032] And / or, based on the collected data, the performance parameters of the electric switching valve are automatically diagnosed and a parameter report and / or characteristic curve of the performance parameters are generated, wherein the performance parameters include valve opening / stroke, switching time, starting current, operating current, three-phase current imbalance, seating force, pull-out force, maximum valve stem friction, minimum valve stem friction, average valve stem friction, torque switch action value, torque switch reset value, current and active power when the torque switch is acted / reset, travel switch action value and / or travel switch reset value.

[0033] In a possible design, based on the collected data, the performance parameters of the electric switch valve are automatically diagnosed and obtained, including the following steps S101 to S111:

[0034] S101. According to the collected valve status, determine whether the electric switch valve is closed. If so, execute step S105; otherwise, execute step S102.

[0035] S102. After waiting for the first preset time, a valve closing control instruction is issued to the electric valve connector, and then step S103 is executed;

[0036] S103. Based on the collected valve status, it is determined again whether the electric switch valve is closed. If so, step S104 is executed. Otherwise, a valve closing control instruction is issued to the electric valve connector, and then the execution returns to step S103.

[0037] S104 sends a reset valve closing control instruction to the electric valve connector, and then returns to step S105;

[0038] S105. After waiting for the second preset time, a valve opening control instruction is issued to the electric valve connector, and then step S106 is executed;

[0039] S106. Based on the collected valve status, determine whether the electric switch valve is fully opened. If so, execute step S107. Otherwise, continue to send a valve opening control instruction to the electric valve connector, and then return to step S106.

[0040] S107. Send a reset valve opening control instruction to the electric valve connector, and then return to step S108;

[0041] S108. After waiting for the third preset time, a valve closing control instruction is issued to the electric valve connector, and then step S109 is executed;

[0042] S109. Based on the collected valve status, it is determined again whether the electric switch valve is closed. If so, step S110 is executed. Otherwise, a valve closing control instruction is sent to the electric valve connector, and then the execution returns to step S109.

[0043] S110 sends a reset valve closing control instruction to the electric valve connector, and then returns to step S111;

[0044] S111. Based on the data collected during the execution of steps S105 to S110, the performance parameters of the electric switching valve are analyzed and calculated, wherein the performance parameters include valve opening / stroke, switching time, starting current, operating current, three-phase current imbalance, seating force, pull-out force, maximum valve stem friction, minimum valve stem friction, average valve stem friction, torque switch action value, torque switch reset value, current and active power when the torque switch is acted / reset, travel switch action value and / or travel switch reset value.

[0045] Beneficial effects of the above scheme:

[0046] (1) The present invention provides a new electric valve connection solution that can operate and control the electric switch valve to debug / diagnose the electric switch valve when the MCC cabinet is available, that is, it includes a connector socket, a three-phase voltage output port, a three-phase current mutual induction unit, a three-phase current output port, a control command input port and a connector plug. Through their connection relationship and mutual cooperation, when the MCC cabinet is available, the electric switch valve can be remotely / locally operated and controlled and debug / diagnosed by means of the electric valve official power supply and the original control circuit, thereby improving practicality and facilitating practical application and promotion;

[0047] (2) The present invention also provides a new debugging / diagnostic solution for electric switch valves in nuclear power plants, which includes a lower computer and an electric valve connector. The lower computer includes a panel and a data acquisition control board. The panel is provided with external interfaces and button switches respectively connected to the data acquisition control board. The external interfaces include a valve state input interface, a valve opening / stroke input interface, a valve stem thrust input interface, a valve stem torque input interface, an electric valve actuator current input interface, an electric valve actuator voltage input interface and a control instruction output interface. Through their connection relationship and mutual cooperation, the button switch can be used on site to generate signals for debugging / diagnosing the electric switch valve. The system receives commands and completes control execution through the electric valve connector and the electric valve switch control circuit in the electric valve MCC cabinet. It also collects valve status, valve opening / stroke, valve stem thrust, valve stem torque, electric valve actuator current, electric valve actuator voltage, and control instructions, so as to analyze and process the collected data and obtain the debugging / diagnostic analysis results of the electric switch valve. In this way, only one team of personnel is needed to realize on-site operation of the electric switch valve, reducing manpower input, shortening the construction period, and eliminating the need for manual communication, completely eliminating the risk of communication failure, thereby improving safety and the speed of on-site work completion, and reducing personnel radiation exposure;

[0048] (3) It is also possible to generate commands for debugging / diagnosing the electric switch valve remotely through the host computer, further improving practicality

[0049] (4) Compared with the existing electric switch valve debugging / diagnosis solution, it has the advantage of portability: the device is light in weight, small in size, and has few accessories, making it easy to transport and carry on site;

[0050] (5) Compared with the existing electric switch valve debugging / diagnosis scheme, it has the advantage of not requiring a dedicated working power supply: that is, the device has a built-in rechargeable battery, and no additional working power supply is required when in use, which reduces the workload on site and avoids the risks of providing working power and using the device. At the same time, it reduces the weight of the device and reduces the on-site handling workload of the staff;

[0051] (6) Compared with the existing electric switch valve debugging / diagnosis scheme, it has the advantages of simple and quick installation: that is, it uses laser ranging technology to measure the valve stroke, which is more convenient to install than the pull-wire sensor and has high measurement accuracy; the device has its own three-phase current and voltage measurement sensors, and no other instruments are required when measuring the three-phase current and voltage;

[0052] (7) Compared with the existing electric switch valve debugging / diagnosis scheme, it has the functions of abnormal protection, overcurrent protection, reverse protection, phase loss protection, three-phase imbalance protection and manual emergency stop protection, and issues the valve opening / closing command by resetting and locking after the protection action, and automatically cuts off the power supply at the same time, and issues the corresponding sound and light alarm, which improves the safety of on-site work and eliminates the risk of damage to the electric switch valve due to failure to cut off the power supply in the first time due to overcurrent, abnormality and phase loss in the valve during debugging and diagnosis;

[0053] (8) Compared with the existing electric switch valve debugging / diagnosis scheme, it also has the electric switch valve automatic diagnosis function, which is further convenient for practical application and promotion. BRIEF DESCRIPTION OF THE DRAWINGS

[0054] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0055] Figure 1 A schematic structural diagram of an electric valve connector for debugging and diagnosing an electric switching valve provided by an embodiment of the present invention.

[0056] Figure 2 A schematic structural diagram of a control device for debugging and diagnosing an electric switching valve provided by an embodiment of the present invention.

[0057] Figure 3 The present invention provides a schematic diagram of the specific structure of the lower computer in the control device according to the embodiment of the present invention. DETAILED DESCRIPTION

[0058] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the present invention will be briefly introduced below in conjunction with the drawings and the description of the embodiments or the prior art. Obviously, the following description of the structures of the drawings is only some embodiments of the present invention. For those skilled in the art, other embodiments can be obtained based on these embodiments without creative work. It should be noted that the description of these embodiments is used to help understand the present invention, but does not constitute a limitation of the present invention.

[0059] It should be understood that although the terms first, second, etc. may be used herein to describe various objects, these objects should not be limited by these terms. These terms are merely used to distinguish one object from another. For example, a first object can be referred to as a second object, and similarly, a second object can be referred to as a first object without departing from the scope of the exemplary embodiments of the present invention.

[0060] It should be understood that the term "and / or" that may appear in this document is merely a description of the association relationship between associated objects, indicating that there may be three relationships. For example, A and / or B can indicate three situations: A exists alone, B exists alone, or A and B exist at the same time. For another example, A, B and / or C can indicate the existence of any one of A, B and C or any combination of them. The term " / and" that may appear in this document describes another type of association object relationship, indicating that there may be two relationships. For example, A / and B can indicate two situations: A exists alone or A and B exist at the same time. In addition, the character " / " that may appear in this document generally indicates that the previous and next associated objects are in an "or" relationship.

[0061] Example 1

[0062] like Figure 1 As shown, the electric valve connector provided in this embodiment and used for debugging and diagnosing the electric switch valve includes but is not limited to a connector socket, a three-phase voltage output port, a three-phase current mutual induction unit, a three-phase current output port, a control command input port and a connector plug, wherein the connector socket is used to respectively connect the three-phase AC power supply and the electric valve switch control circuit in the electric valve MCC cabinet, the connector plug is used to connect the three-phase AC plug connector of the electric valve actuator, and the connector socket is connected to the connector plug (such as Figure 1 As shown, specifically, the connector plug is connected through a three-phase AC output port, and a three-phase AC cable between the connector socket and the connector plug is passed through the current sensing hole of the three-phase current mutual induction unit; the three-phase voltage output port is connected to the three-phase voltage sampling point between the connector socket and the connector plug, and is used to output a three-phase voltage sampling signal of the three-phase AC power for the electric switch valve; the three-phase current output port is connected to the output end of the three-phase current mutual induction unit, and is used to output a three-phase current sampling signal of the three-phase AC power for the electric switch valve; the control command input port is connected to the electric valve switch control circuit in the electric valve MCC cabinet through the connector socket, and is used to input control instructions for debugging / diagnosing the electric switch valve into the electric valve switch control circuit.

[0063] like Figure 1As shown, in the specific structure of the electric valve connector, the electric valve switch control circuit is a specific control circuit within the existing electric valve MCC cabinet that performs on / off valve operation on the electric switch valve. The electric switch valve can be opened / closed according to the on / off valve control instructions from the control command input port and the outside. Based on the specific design of the electric valve connector, when the MCC cabinet is available, the electric valve official power supply (i.e., the three-phase AC power supply within the electric valve MCC cabinet) and the original control circuit (i.e., the electric valve switch control circuit within the electric valve MCC cabinet) can be used to remotely / locally control the electric switch valve and perform debugging / diagnosis on the electric switch valve, thereby improving practicality. In addition, the three-phase current mutual induction unit can be conventionally implemented using existing current transformers, and the number of connector plugs can be one, two, or more.

[0064] Preferably, it also includes but is not limited to a valve status input port and a valve status output port, wherein the valve status input port is connected to the stroke / torque switch of the electric switching valve through the connector plug, and the valve status input port is also connected to the electric valve MCC cabinet through the connector socket, and the valve status input port is also connected to the valve status output port; the valve status output port is used to output the valve status from the stroke / torque switch of the electric switching valve.

[0065] In summary, the electric valve connector provided by this embodiment has the following technical effects:

[0066] (1) This embodiment provides a new electric valve connection solution that can operate and control the electric switch valve to debug / diagnose the electric switch valve when the MCC cabinet is available, that is, it includes a connector socket, a three-phase voltage output port, a three-phase current mutual induction unit, a three-phase current output port, a control command input port and a connector plug. Through their connection relationship and mutual cooperation, when the MCC cabinet is available, the electric switch valve can be remotely / locally operated and controlled and debug / diagnosed by means of the electric valve official power supply and the original control circuit, thereby improving practicality and facilitating practical application and promotion.

[0067] Example 2

[0068] like Figures 2-3As shown, this embodiment, based on the electric valve connector provided in Example 1, further provides a control device for debugging and diagnosing an electric switch valve, which includes but is not limited to a lower computer and the electric valve connector for debugging and diagnosing an electric switch valve as described in Example 1, wherein the lower computer includes but is not limited to a panel and a data acquisition control board, etc., and the panel is arranged with but is not limited to external interfaces and button switches connected to the data acquisition control board respectively, and the external interfaces include but are not limited to a valve state input interface for connecting to the stroke / torque switch of the electric switch valve, a valve opening / stroke input interface for connecting to the valve opening / stroke sensor of the electric switch valve, a valve stem thrust input interface for connecting to the thrust sensor of the electric switch valve, a valve stem torque input interface for connecting to the torque sensor of the electric switch valve, an electric valve actuator current input interface for connecting to the three-phase current output interface of the electric valve connector, an electric valve actuator voltage input interface for connecting to the three-phase voltage output interface of the electric valve connector, and a control command output interface for connecting to the control command input interface of the electric valve connector, etc. The valve state input interface is used to input the valve state conventionally obtained by the stroke / torque switch (e.g., valve core displacement reflecting the valve state measured by a laser displacement sensor disposed on the stroke / torque switch, etc.). The valve opening / stroke input interface is used to input the valve opening and / or stroke (e.g., linear stroke and / or angular stroke, etc.) conventionally obtained by the valve opening / stroke sensor. The valve stem thrust input interface is used to input the valve stem thrust conventionally obtained by the thrust sensor. The valve stem torque input interface is used to input the valve stem torque conventionally obtained by the torque sensor. The electric valve actuator current input interface is used to input the electric valve actuator current sampling signal conventionally obtained by sensing the current transformer (which specifically reflects the current signal of the three-phase alternating current used to supply the electric switching valve). The electric valve actuator voltage input interface is used to input the electric valve actuator voltage sampling signal conventionally obtained by sampling the voltage sampling point (which specifically reflects the voltage signal of the three-phase alternating current used to supply the electric switching valve). The control instruction output interface is used to output control instructions to be executed, such as valve opening control instructions and / or valve closing control instructions, to the electric valve connector.

[0069] The push button switch is used to generate hard commands for debugging / diagnosing the electric on / off valve. Hard commands are hardware-generated commands, such as valve opening and / or valve closing commands, and are primarily generated manually by an operator by pressing a corresponding push button switch. Furthermore, hard commands may include, but are not limited to, remote control hard commands, local control hard commands, and / or emergency shutdown hard commands. Specifically, the button switches include but are not limited to a point-operated valve-opening button switch for generating a valve-opening hard command when pressed and an automatic reset button (which will automatically pop up after being released and cancel the generation of the valve-opening hard command), a valve-opening button switch for generating a valve-opening hard command when pressed and a self-locking holding button (which will not automatically pop up after being released and will not pop up until it is pressed again and cancel the generation of the valve-opening hard command), a point-operated valve-closing button switch for generating a valve-closing hard command when pressed and an automatic reset button (which will automatically pop up after being released and cancel the generation of the valve-closing hard command), a valve-closing button switch for generating a valve-closing hard command when pressed and a self-locking holding button (which will not automatically pop up after being released and will not pop up until it is pressed again and cancel the generation of the valve-closing hard command), a control switching button switch for switching between remote control hard commands and local control hard commands when pressed and a self-locking holding button (which can be Generate the remote control hard command, and will not automatically pop up after being released, until it is pressed again, and generate the local control hard command) and / or an emergency stop button switch for pressing to generate an emergency stop hard command and being a self-locking holding button (which will not automatically pop up after being released, until it is pressed again, and cancel the generation of the emergency stop hard command), etc., wherein the remote control hard command is used to indicate that only the on / off valve soft command from the upper computer is accepted, the local control hard command is used to indicate that only the on / off valve hard command from the button switch is accepted, the electric valve control driver adjusts the phase sequence of the three-phase AC power input to the electric switch valve, the power on / off hard command is used to instruct the electric valve control driver to turn on / off the three-phase AC power input to the electric switch valve, and the emergency stop hard command is used to indicate the cancellation and locking of the on / off valve control instruction.

[0070] The data acquisition control board is used to send control instructions for debugging / diagnosing the electric switch valve to the electric valve connector according to the hard command. The aforementioned control instructions specifically include but are not limited to valve opening control instructions and / or valve closing control instructions.

[0071] The electric valve connector is used to transmit the control instructions to the electric valve MCC cabinet and transmit the three-phase current sampling signal and three-phase voltage sampling signal of the three-phase alternating current power for the electric switch valve to the data acquisition control board. The three-phase current sampling signal is obtained by conventional sensing by the current mutual induction unit and transmitted by the electric valve actuator current input interface, and is used to reflect the current magnitude of the three-phase alternating current power. The three-phase voltage sampling signal is obtained by conventional sampling at the voltage sampling point and transmitted by the electric valve actuator voltage input interface, and is used to reflect the voltage magnitude of the three-phase alternating current power.

[0072] The data acquisition control board is also used to collect the valve status (specifically input by the valve status input interface), valve opening / stroke (specifically input by the valve opening / stroke input interface), valve stem thrust (specifically input by the valve stem thrust input interface), valve stem torque (specifically input by the valve stem torque input interface), the electric valve actuator current size (specifically the motor current size of the electric valve actuator) obtained based on the three-phase current sampling signal and the electric valve actuator voltage size (specifically the motor voltage size of the electric valve actuator) obtained based on the three-phase voltage sampling signal, and the control instructions that need to be output through the external interface, so as to analyze and process the collected data and obtain the debugging / diagnostic analysis results of the electric switching valve.

[0073] The device for analyzing and processing the collected data can be the data acquisition control board or a host computer for receiving the uploaded collected data. Specifically, the collected data is analyzed and processed to obtain debugging / diagnostic analysis results of the electric switch valve, including but not limited to: calculating the active power and / or power factor of the electric switch valve based on the collected three-phase current and three-phase voltage (the specific calculation formula is an existing formula and is not repeated here), and displaying and storing the results; and / or automatically diagnosing the performance parameters of the electric switch valve based on the collected data, and generating a parameter report and / or characteristic curve of the performance parameters, wherein the performance parameters include but are not limited to valve opening or / stroke, switching time, starting current, operating current, three-phase current imbalance, seating force, extraction force, maximum valve stem friction, minimum valve stem friction, average valve stem friction, torque switch action value, torque switch reset value, current and active power when the torque switch is actuated / reset, travel switch action value and / or travel switch reset value, etc. The aforementioned performance parameters are conventional terms. The specific process for diagnosing these performance parameters based on uploaded data, such as the valve state, valve opening / stroke, valve stem thrust, valve stem torque, electric valve actuator current, electric valve actuator voltage, and control instructions, is conventional and will not be further described here. Furthermore, these diagnostically derived performance parameters, along with their numerical tables and / or characteristic curves, can also be displayed and stored.

[0074] Based on the detailed description of the aforementioned control device, a new debugging / diagnostic solution for electric switch valves in nuclear power plants is provided, which includes a lower computer and an electric valve connector, the lower computer includes a panel and a data acquisition control board, and the panel is provided with external interfaces and button switches respectively connected to the data acquisition control board, the external interfaces include a valve state input interface, a valve opening / stroke input interface, a valve stem thrust input interface, a valve stem torque input interface, an electric valve actuator current input interface, an electric valve actuator voltage input interface and a control instruction output interface, and through their connection relationship and mutual cooperation, commands for debugging / diagnosing the electric switch valve can be generated on site through the button switch, and Control execution is completed through the electric valve connector and the electric valve switch control circuit in the electric valve MCC cabinet, and the valve status, valve opening / stroke, valve stem thrust, valve stem torque, electric valve actuator current and electric valve actuator voltage as well as control instructions are also collected so as to display and analyze the collected data in real time and obtain the debugging / diagnostic analysis results of the electric switch valve. In this way, only one team of personnel is needed to realize on-site operation of the electric switch valve, reducing manpower input, shortening the construction period, and eliminating the need for manual communication, completely eliminating the risk of communication failure, thereby improving safety and the speed of completing on-site work, reducing personnel radiation exposure, and facilitating practical application and promotion.

[0075] Preferably, the data acquisition control board is further configured to cancel and block the issuance of the valve opening / closing control command when an alarm condition is detected, until the alarm condition disappears. The alarm conditions include, but are not limited to, overcurrent, reverse flow, abnormality, phase loss, three-phase imbalance, sequence reversal, and / or emergency stop. Thus, the entire device also has functions such as overcurrent protection, reverse flow protection, abnormality protection, phase loss protection, three-phase imbalance protection, sequence reversal protection, and / or emergency stop protection. Specifically, determining the occurrence of an alarm condition includes but is not limited to: based on the current size of the electric valve actuator, if it is found that the current value of any phase, any two phases or three phases is greater than the preset overcurrent protection current threshold, it is determined that an overcurrent condition has occurred; based on the valve state, if it is found that the state of the valve feedback is inconsistent with the output open / close valve control instruction, it is determined that a reversal condition has occurred, or based on the valve opening / stroke, if it is found that the valve opening / stroke change trend is inconsistent with the output open / close valve control instruction, it is determined that a reversal condition has occurred; based on the valve state, if it is found that the state of the valve feedback is an abnormal state, it is determined that an abnormal condition has occurred; based on the electric valve actuator when the three-phase AC power is turned on, The actuator current is detected. If any phase current value is zero, a phase loss condition is determined. If the imbalance of the three-phase current values ​​is greater than a preset imbalance threshold value based on the current of the electric valve actuator, a three-phase imbalance condition is determined. If the phase sequence of the three-phase AC power supply input to the electric valve connector is reversed, a reverse sequence condition is determined (only a reverse sequence is indicated, and the switching command is not reset and locked at this time). Upon receiving an emergency stop command (which can be from the host computer or from the push button switch), an emergency stop condition is determined. The emergency stop command is used to indicate the cancellation and locking of the opening / closing valve control command. In addition, the data acquisition control board is also used to send a power disconnect control command to the electric valve connector when an alarm condition is determined, so that the three-phase AC power supply to the electric switch valve is promptly cut off through the electric valve connector.

[0076] Preferably, the lower computer also includes but is not limited to an indicator light and / or an alarm connected to the data acquisition control board, wherein the indicator light includes but is not limited to a valve opening position indicator light that lights up when the electric switch valve is found to be in the open position according to the valve state, a valve closing position indicator light that lights up when the electric switch valve is found to be in the closed position according to the valve state, and / or a phase sequence abnormality indicator light that lights up when the phase sequence of the three-phase AC power supply input to the electric valve connector is found to be in reverse sequence, etc. The alarm is used to trigger an alarm action when it is determined that an overcurrent condition, a reversal condition, an abnormal condition, a phase loss condition, a three-phase imbalance condition, and / or an emergency shutdown condition occurs. This can also enable the entire device to have the functions of indicating the open / close valve position, indicating the abnormal phase sequence of the working power, and a protection alarm. In addition, the alarm can be, but is not limited to, an audible and visual alarm, and perform different audible and visual alarm actions for different situations.

[0077] Preferably, the lower computer further includes but is not limited to a rechargeable battery, and the button switch includes but is not limited to a power switch, one end of the power switch is connected to the output end of the rechargeable battery, and the other end of the power switch is connected to the power supply end of the data acquisition control board. Figure 3 As shown, the rechargeable battery can be used to provide operating power for the data acquisition control board, eliminating the need for a separate power supply when used on-site. The power switch is used to control the on / off switching of the power supply circuit between the rechargeable battery and the data acquisition control board. Specifically, a self-locking hold button can be used to achieve stable on / off switching. When the aforementioned power supply circuit is on, the data acquisition control board can also monitor the remaining charge of the rechargeable battery in real time and upload the monitoring data to the host computer for real-time display. In addition, the rechargeable battery can be charged via an external power adapter.

[0078] Preferably, in order to achieve the purpose of automatic diagnosis, the performance parameters of the electric switch valve are automatically diagnosed based on the collected data, including but not limited to the following steps S101 to S111.

[0079] S101. Based on the collected valve status, determine whether the electric switch valve is fully closed. If so, execute step S105; otherwise, execute step S102.

[0080] S102. After waiting for a first preset time, a valve closing control instruction is sent to the electric valve connector, and then step S103 is executed.

[0081] S103. Based on the collected valve status, determine again whether the electric switch valve is fully closed. If so, execute step S104; otherwise, continue to send a valve closing control instruction to the electric valve connector, and then return to execute step S103.

[0082] S104. Send a reset valve closing control instruction to the electric valve connector, and then return to step S105.

[0083] S105. After waiting for a second preset time, a valve opening control instruction is sent to the electric valve connector, and then step S106 is executed.

[0084] S106. Based on the collected valve status, determine whether the electric switch valve is fully opened. If so, execute step S107; otherwise, continue to send a valve opening control instruction to the electric valve connector, and then return to execute step S106.

[0085] S107. Send a reset valve opening control instruction to the electric valve connector, and then return to step S108.

[0086] S108. After waiting for a third preset time period, a valve closing control instruction is sent to the electric valve connector, and then step S109 is executed.

[0087] S109. Based on the collected valve status, determine again whether the electric switch valve is fully closed. If so, execute step S110; otherwise, continue to send a valve closing control instruction to the electric valve connector, and then return to execute step S109.

[0088] S110. Send a reset valve closing control instruction to the electric valve connector, and then return to step S111.

[0089] S111. Based on the data collected during the execution of steps S105 to S110, the performance parameters of the electric switch valve are analyzed and calculated, wherein the performance parameters include but are not limited to valve opening / stroke, switching time, starting current, operating current, three-phase current imbalance, seating force, pull-out force, maximum valve stem friction, minimum valve stem friction, average valve stem friction, torque switch action value, torque switch reset value, current and active power when the torque switch is actuated / reset, travel switch action value and / or travel switch reset value, etc.

[0090] Preferably, the system further includes a host computer connected to the data acquisition control board, wherein the host computer is used to generate soft commands for debugging / diagnosing the electric switch valve; the data acquisition control board is also used to send control instructions for debugging / diagnosing the electric switch valve to the electric valve connector based on the soft commands, and is also used to upload the collected data to the host computer; the host computer is also used to display and analyze the uploaded data from the slave computer in real time to obtain the debugging / diagnostic analysis results of the electric switch valve. The host computer is specifically, but not limited to, a tablet computer, laptop computer, or industrial computer installed with control, monitoring, or diagnostic software for debugging / diagnosing the electric switch valve. The host computer and the slave computer (specifically, the data acquisition control board) can be connected specifically, but not limited to, via a wired communication data cable or wireless communication method to enable data transmission between the host computer and the slave computer during the debugging / diagnosis process of the electric switch valve. The soft command refers to a command generated by the software and such as a valve opening command and / or a valve closing command, which can be automatically generated by the software or manually generated by the operator by touching the human-computer interaction interface of the software; in addition, the soft command can also include but is not limited to a phase sequence adjustment soft command, a power on / off soft command and / or an emergency stop soft command, etc., wherein the phase sequence adjustment soft command is used to instruct the electric valve connector to adjust the phase sequence of the three-phase alternating current supplied to the electric switching valve, the power on / off soft command is used to instruct the electric valve connector to turn on / off the three-phase alternating current supplied to the electric switching valve, and the emergency stop soft command is used to instruct the cancellation and locking of the opening / closing valve control instruction.

[0091] In summary, the control device provided in this embodiment has the following technical effects in addition to the technical effects of the first embodiment:

[0092] (1) This embodiment provides a new debugging / diagnostic solution for electric switch valves in nuclear power plants, which includes a lower computer and an electric valve connector. The lower computer includes a panel and a data acquisition control board. The panel is provided with external interfaces and button switches connected to the data acquisition control board respectively. The external interfaces include a valve state input interface, a valve opening / stroke input interface, a valve stem thrust input interface, a valve stem torque input interface, an electric valve actuator current input interface, an electric valve actuator voltage input interface and a control command output interface. Through their connection relationship and mutual cooperation, commands for debugging / diagnosing the electric switch valve can be generated on site through the button switch. The system can generate a command and complete the control execution through the electric valve connector and the electric valve switch control circuit in the electric valve MCC cabinet. It can also collect valve status, valve opening / stroke, valve stem thrust, valve stem torque, electric valve actuator current and electric valve actuator voltage as well as control instructions, so as to analyze and process the collected data and obtain the debugging / diagnosis analysis results of the electric switch valve. In this way, only one team of personnel is needed to realize the on-site operation of the electric switch valve, which reduces manpower input and helps to shorten the construction period. In addition, manual communication is no longer required, and the risk of communication failure is completely eliminated, thereby improving safety and the speed of on-site work completion, and helping to reduce personnel radiation exposure.

[0093] (2) It is also possible to generate commands for debugging / diagnosing the electric switch valve remotely through the host computer, further improving practicality;

[0094] (3) Compared with the existing electric switch valve debugging / diagnosis solution, it has the advantage of portability: the device is light in weight, small in size, and has few accessories, making it easy to transport and carry on site;

[0095] (4) Compared with the existing electric switch valve debugging / diagnosis scheme, it has the advantage of not requiring a dedicated working power supply: that is, the device has a built-in rechargeable battery, and no additional working power supply is required when in use, which reduces the workload on site and avoids the risks of providing working power and using the device. At the same time, it reduces the weight of the device and reduces the on-site handling workload of the staff;

[0096] (5) Compared with the existing electric switch valve debugging / diagnosis scheme, it has the advantages of simple and quick installation: that is, it uses laser ranging technology to measure the valve stroke, which is more convenient to install than the wire sensor and has high measurement accuracy; the device has its own three-phase current and voltage measurement sensors, and no other instruments are required when measuring the three-phase current and voltage;

[0097] (6) Compared with the existing electric switch valve debugging / diagnosis scheme, it has the functions of abnormal protection, overcurrent protection, reverse protection, phase loss protection, three-phase unbalance protection and manual emergency stop protection, and issues the valve opening / closing command by resetting and locking after the protection action, and automatically cuts off the power supply at the same time, and issues the corresponding sound and light alarm, which improves the safety of on-site work and eliminates the risk of damage to the electric switch valve due to failure to cut off the power supply in the first time due to overcurrent, abnormality and phase loss in the valve during debugging and diagnosis;

[0098] (7) Compared with the existing electric switch valve debugging / diagnosis scheme, it also has the electric switch valve automatic diagnosis function, which is convenient for practical application and promotion.

[0099] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the scope of protection of the present invention.

Claims

1. An electric valve connector for debugging and diagnosing an electric switch valve, characterized in that: It includes a connector socket, a three-phase voltage output port, a three-phase current mutual induction unit, a three-phase current output port, a control command input port and a connector plug, wherein the connector socket is used to connect the three-phase AC power supply and the electric valve switch control circuit in the electric valve MCC cabinet respectively, the connector plug is used to connect the three-phase AC plug connector of the electric valve actuator, the connector socket is connected to the connector plug, and the current sensing hole of the three-phase current mutual induction unit is passed through with a three-phase AC cable between the connector socket and the connector plug; The three-phase voltage output port is connected to the three-phase voltage sampling point between the connector socket and the connector plug, and is used to output the three-phase voltage sampling signal of the three-phase alternating current used to power the electric switch valve; The three-phase current output port is connected to the output end of the three-phase current mutual induction unit and is used to output the three-phase current sampling signal of the three-phase alternating current for the power switch valve; The control command input port is connected to the electric valve switch control circuit in the electric valve MCC cabinet through the connector socket, and is used to input control instructions for debugging / diagnosing the electric switch valve into the electric valve switch control circuit.

2. The electric valve connector according to claim 1, wherein: It also includes a valve state input port and a valve state output port, wherein the valve state input port is connected to the stroke / torque switch of the electric switch valve through a connector plug, the valve state input port is also connected to the electric valve MCC cabinet through a connector socket, and the valve state input port is also connected to the valve state output port; The valve status output port is used to output the valve status of the stroke / torque switch of the electric switching valve.

3. A control device for debugging and diagnosing an electric switch valve, characterized in that: The invention comprises a lower computer and an electric valve connector for debugging and diagnosing an electric switch valve according to claim 1, wherein the lower computer comprises a panel and a data acquisition control board, and the panel is provided with external interfaces and button switches respectively connected to the data acquisition control board, the external interfaces comprising a valve state input interface for connecting to a stroke / torque switch of the electric switch valve, a valve opening / stroke input interface for connecting to a valve opening / stroke sensor of the electric switch valve, a valve stem thrust input interface for connecting to a thrust sensor of the electric switch valve, a valve stem torque input interface for connecting to a torque sensor of the electric switch valve, an electric valve actuator current input interface for connecting to a three-phase current output interface of the electric valve connector, an electric valve actuator voltage input interface for connecting to a three-phase voltage output interface of the electric valve connector, and a control command output interface for connecting to a control command input interface of the electric valve connector; Push button switch, used to generate hard commands for debugging / diagnosing electric on / off valves; The data acquisition control board is used to send control instructions for debugging / diagnosing the electric switch valve to the electric valve connector according to the hard command; Electric valve connector, used to transmit control instructions to the electric valve MCC cabinet, and transmit three-phase current sampling signals and three-phase voltage sampling signals to the data acquisition control board; The data acquisition control board is also used to collect valve status, valve opening / stroke, valve stem thrust, valve stem torque, electric valve actuator current based on three-phase current sampling signals, electric valve actuator voltage based on three-phase voltage sampling signals, and control instructions that need to be output through the external interface, so as to analyze and process the collected data and obtain the debugging / diagnostic analysis results of the electric switch valve.

4. The control device according to claim 3, wherein: The button switch includes a point-operated valve-opening button switch for pressing to generate a valve-opening hard command and an automatic reset button, a valve-opening button switch for pressing to generate a valve-opening hard command and a self-locking holding button, a point-operated valve-closing button switch for pressing to generate a valve-closing hard command and an automatic reset button, a valve-closing button switch for pressing to generate a valve-closing hard command and a self-locking holding button, a control switching button switch for pressing to switch between remote control hard commands and local control hard commands and a self-locking holding button, and / or an emergency stop button switch for pressing to generate an emergency stop hard command and a self-locking holding button, wherein the remote control hard command is used to indicate that only the valve-opening / closing soft command from the upper computer is accepted, the local control hard command is used to indicate that only the valve-opening / closing hard command from the button switch is accepted, and the emergency stop hard command is used to indicate the cancellation and locking of the valve-opening / closing control instruction.

5. The control device according to claim 3, wherein: The data acquisition control board is also used to cancel and lock the opening / closing valve control command when an alarm condition is determined to occur until the alarm condition disappears, where the alarm condition includes overcurrent, reversal, abnormality, phase loss, three-phase imbalance, reverse sequence and / or emergency shutdown.

6. The control device according to claim 5, wherein: Determine if an alarm condition occurs, including: According to the current size of the electric valve actuator, if the current value of any phase, any two phases or three phases is found to be greater than the preset overcurrent protection current threshold, it is determined that an overcurrent situation has occurred; According to the valve status, if it is found that the valve feedback status is inconsistent with the output open / close valve control instruction, it is determined that a reversal situation has occurred; or according to the valve opening / stroke, if it is found that the valve opening / stroke change trend is inconsistent with the output open / close valve control instruction, it is determined that a reversal situation has occurred; According to the valve status, if the valve feedback status is found to be abnormal, it is determined that an abnormal situation has occurred; According to the current size of the electric valve actuator when the three-phase AC power is turned on, if any phase current value is found to be zero, it is determined that a phase loss occurs; According to the current size of the electric valve actuator, if the imbalance of the three-phase current value is found to be greater than the preset imbalance threshold, it is determined that a three-phase imbalance occurs; According to the phase sequence of the three-phase AC power supply input to the electric valve connector, if the phase sequence of the three-phase AC power supply is found to be reversed, it is determined that a reverse sequence situation occurs; When an emergency stop command is received, it is determined that an emergency stop situation occurs, wherein the emergency stop command is used to instruct to cancel and lock the issuance of an open / close valve control instruction.

7. The control device according to claim 3, wherein: The lower computer also includes indicator lights and / or alarms connected to the data acquisition control board, wherein the indicator lights include a valve opening position indicator light that lights up when the electric switch valve is found to be in the open position according to the valve status, a valve closing position indicator light that lights up when the electric switch valve is found to be in the closed position according to the valve status, and / or a phase sequence abnormality indicator light that lights up when the phase sequence of the three-phase AC power supply input to the electric valve connector is found to be reversed. The alarm is used to trigger an alarm action when it is determined that an overcurrent condition, reversal condition, abnormal condition, phase loss condition, three-phase imbalance condition, reverse sequence condition and / or emergency shutdown condition occurs.

8. The control device according to claim 3, wherein: The lower computer also includes a rechargeable battery, and the button switch includes a power switch. One end of the power switch is connected to the output end of the rechargeable battery, and the other end of the power switch is connected to the power supply end of the data acquisition control board.

9. The control device according to claim 3, wherein: Analyze and process the collected data to obtain the debugging / diagnostic analysis results of the electric on / off valve, including: According to the collected three-phase current and three-phase voltage, the active power and / or power factor of the electric switch valve are calculated and stored; And / or, based on the collected data, the performance parameters of the electric switching valve are automatically diagnosed and a parameter report and / or characteristic curve of the performance parameters are generated, wherein the performance parameters include valve opening / stroke, switching time, starting current, operating current, three-phase current imbalance, seating force, pull-out force, maximum valve stem friction, minimum valve stem friction, average valve stem friction, torque switch action value, torque switch reset value, current and active power when the torque switch is acted / reset, travel switch action value and / or travel switch reset value.

10. The control device according to claim 9, characterized in that According to the collected data, the performance parameters of the electric switch valve are automatically diagnosed and obtained, including the following steps S101 to S111: S101. According to the collected valve status, determine whether the electric switch valve is closed. If so, execute step S105; otherwise, execute step S102. S102. After waiting for the first preset time, a valve closing control instruction is issued to the electric valve connector, and then step S103 is executed; S103. Based on the collected valve status, it is determined again whether the electric switch valve is closed. If so, step S104 is executed. Otherwise, a valve closing control instruction is issued to the electric valve connector, and then the execution returns to step S103. S104 sends a reset valve closing control instruction to the electric valve connector, and then returns to step S105; S105. After waiting for the second preset time, a valve opening control instruction is issued to the electric valve connector, and then step S106 is executed; S106. Based on the collected valve status, determine whether the electric switch valve is fully opened. If so, execute step S107. Otherwise, continue to send a valve opening control instruction to the electric valve connector, and then return to step S106. S107. Send a reset valve opening control instruction to the electric valve connector, and then return to step S108; S108. After waiting for the third preset time, a valve closing control instruction is issued to the electric valve connector, and then step S109 is executed; S109. Based on the collected valve status, it is determined again whether the electric switch valve is closed. If so, step S110 is executed. Otherwise, a valve closing control instruction is sent to the electric valve connector, and then the execution returns to step S109. S110 sends a reset valve closing control instruction to the electric valve connector, and then returns to step S111; S111. Based on the data collected during the execution of steps S105 to S110, the performance parameters of the electric switching valve are analyzed and calculated, wherein the performance parameters include valve opening / stroke, switching time, starting current, operating current, three-phase current imbalance, seating force, pull-out force, maximum valve stem friction, minimum valve stem friction, average valve stem friction, torque switch action value, torque switch reset value, current and active power when the torque switch is acted / reset, travel switch action value and / or travel switch reset value.

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