A safety control system for turning gear

Abstract

The present invention discloses a turning gear safety control system, including a main control unit, a data acquisition unit, a switching output unit, an electrical execution unit, a manual hard loop control unit, an Internet of Things interface unit, an intelligent analysis monitoring unit and a human-machine control feedback unit, wherein the main control unit is respectively connected to the data acquisition unit, the switching output unit, the Internet of Things interface unit and the human-machine control feedback unit, the intelligent analysis monitoring unit is connected to the main control unit, the switching output unit is respectively connected to the electrical execution unit and the manual hard loop control unit, the electrical execution unit is connected to the controlled turning gear, and the data acquisition unit is respectively connected to the human-machine control feedback unit and the controlled turning gear. The present invention has intelligent diagnosis capability and Internet of Things access capability through special control loop software and hardware topology design, and has self-healing capability in the event of a fault while reducing the probability of a fault through automatic diagnosis of fault points and processing suggestions, thereby achieving the purpose of reliable and stable operation of the control system.

Description

Technical Field

[0001] The invention belongs to the technical field of nuclear power steam turbine cranking gear, and in particular relates to a cranking gear safety control system. Background Art

[0002] During the pre-startup preparation process, shutdown idling and cooling process, and maintenance and commissioning, the nuclear power steam turbine needs to use a special turning gear to continuously turn the turbine rotor to ensure the straightness of the shaft system and prevent major accidents such as bending and deformation of the shaft system during high temperature conditions and long-term static conditions. Therefore, nuclear power turning gears are of great significance to the safe and stable operation of nuclear power steam turbine generator sets. With the continuous improvement of technological progress in the requirements for automation and intelligence of important devices, existing nuclear power turning gears generally have problems such as low degree of automation, insufficient redundancy, insufficient reliability, unreasonable control topology structure, and lack of intelligent functions and IoT interface design. As a result, when the turning gear device cannot be started correctly or an abnormality occurs suddenly, the alarm prompt is insufficient and the cause of the fault is difficult to diagnose. Delayed processing leads to turning failure and major shaft deformation accidents, so the reliability of the turning gear control system is low.

[0003] In addition, the patent document with the publication number CN108933431A discloses a starting protection circuit and a starting protection system for a nuclear power plant turning motor, wherein the starting protection circuit includes a power supply circuit, a protection unit and a control unit, wherein the protection unit is coupled to the control unit; the control unit includes a drive module, a first DC power supply and an execution module; the protection unit includes a step-down starting branch and a full-voltage operation branch; the step-down starting branch includes: the main normally open contact of the second contactor, a resistor box and the main normally open contact of the first contactor connected in series; the step-down starting branch can realize the step-down starting of the turning motor, and the full-voltage operation branch can transmit stable nuclear power to the turning motor of the nuclear power plant to drive the turning motor to work normally. This technology mainly implements protection for the turning starting device and the starting process, has full-voltage and step-down starting operation branches, and has operation control, operation protection and alarm functions, which greatly improves the stability and reliability of the turning control, greatly prolongs the service life of the device and the continuous operation safety performance. However, no solutions are proposed for other common problems of turning gears, especially for signal mis-collection and mis-transmission, external interference, device malfunction, emergency processing after a fault occurs, automatic redundant replacement when a fault occurs, and intelligent Internet of Things capabilities. Therefore, further improvements are necessary. Summary of the invention

[0004] The purpose of the present invention is to overcome the above-mentioned technical problems existing in the prior art and to provide a turning gear safety control system. The present invention adopts a special control loop software and hardware topology design and has intelligent diagnosis capabilities and Internet of Things access capabilities. It automatically diagnoses fault points and provides processing suggestions. It has the ability of self-healing when faults occur while reducing the probability of failure, thereby achieving the purpose of reliable and stable operation of the control system.

[0005] To achieve the above purpose, the technical solution adopted by the present invention is as follows:

[0006] A turning gear safety control system, characterized in that it comprises a main control unit, a data acquisition unit, a switching output unit, an electrical execution unit, a manual hard circuit control unit, an Internet of Things interface unit, an intelligent analysis and monitoring unit and a human-machine control feedback unit, wherein the main control unit is respectively connected to the data acquisition unit, the switching output unit, the Internet of Things interface unit and the human-machine control feedback unit, the intelligent analysis and monitoring unit is connected to the main control unit through the Internet of Things interface unit, the switching output unit is respectively connected to the electrical execution unit and the manual hard circuit control unit, the electrical execution unit is connected to a controlled turning gear, and the data acquisition unit is respectively connected to the human-machine control feedback unit and the controlled turning gear; wherein,

[0007] The data acquisition unit is used to collect parameter information of the controlled turning vehicle and transmit it to the main control unit;

[0008] The main control unit is used to perform logic processing on the parameter information to generate soft loop control instructions and status signals, and input the status signals and soft loop control instructions into the human-machine control feedback unit and the switching output unit respectively;

[0009] The manual hard circuit control unit is used to manually input the hard circuit control command of the controlled turning vehicle to the switching output unit under normal working conditions and / or emergency working conditions, and feedback the status to the human-machine control feedback unit;

[0010] The switching output unit is used to realize the switching output of the soft loop control mode and the hard loop control mode according to the soft loop control instruction and the hard loop control instruction;

[0011] The electrical execution unit is used to control the operation of the controlled turning gear according to the control signal output by the switching output unit;

[0012] The human-machine control feedback unit is used for feedback display of status signals and input of manual control signals;

[0013] The intelligent analysis and monitoring unit is used to read the parameter information obtained by the main control unit through the Internet of Things interface unit, automatically record control events and parameter historical trends, intelligently analyze the whole process of equipment working conditions, and provide fault warning, fault handling prompt services and remote control functions.

[0014] The main control unit includes at least two redundant main and auxiliary operation or redundant voting operation main controllers, the data acquisition unit includes at least two sets of redundant parallel operation sensor components, the intelligent analysis and monitoring unit includes at least two sets of redundant main and auxiliary operation or switching operation intelligent analysis and monitoring, the electrical execution unit includes an engagement solenoid valve, a cranking motor and at least two sets of redundant switching operation soft starters, the engagement solenoid valve is connected to the switching output unit, and the soft starter is respectively connected to the switching output unit and the cranking motor; wherein,

[0015] The sensor components are used to collect parameter information at the same time, and transmit the collected parameter information to all main controllers at the same time, so as to realize hot standby and voting of parameter information;

[0016] The main controller is used to generate and redundantly vote on the soft loop control instructions, and input the redundantly voted soft loop control instructions to the switching output unit;

[0017] The soft starter is used to realize real-time switching and disturbance-free switching between soft starters according to the control signal output by the switching output unit;

[0018] Intelligent analysis monitors cooperate with each other to realize historical data record storage, intelligent analysis, remote control functions and backup.

[0019] The main control unit also includes at least two output units connected to the main controller. The soft loop control instructions generated by the main controller are input to the switching output unit after the output units implement redundant resolution.

[0020] The electrical execution unit further comprises a standby auxiliary turning gear execution device connected to the switching output unit.

[0021] The switching output unit includes a soft-hard circuit switching unit and an electrical circuit switching unit. The soft-hard circuit switching unit is respectively connected to the manual hard circuit control unit and the main controller, and the electrical circuit switching unit is respectively connected to the soft-hard circuit switching unit, the soft starter and the engagement solenoid valve; wherein the soft-hard circuit switching unit is used to realize the switching output of the soft circuit control mode and the hard circuit control mode according to the soft circuit control instructions and the hard circuit control instructions; the electrical circuit switching unit is used to obtain a fault feedback signal when one of the soft starters fails, and switch to another soft starter according to the fault feedback signal; and after the soft starter fault is recovered and put into hot standby, automatically enter and switch to the soft starter of the fault recovery; and output the control instructions of the engagement solenoid valve and the control instructions of the standby auxiliary turning actuator.

[0022] The soft and hard circuit switching unit includes a switching switch B3021, a switching relay coil 3022 and a relay contact S3022, the switching switch B3021 is connected to the switching relay coil 3022, and the relay contact S3022 is connected to the electrical circuit switching unit and the main controller respectively;

[0023] The electrical circuit switching unit includes an engagement solenoid valve command input contact S7012, an engagement solenoid valve command output coil 3017, a switching holding relay normally open contact S3019a, a motor manual start input contact S7011, a cranking stop manual button contact, a cranking stop controller command contact, an auxiliary cranking operation lock contact S3018, a No. 1 soft start fault normally closed contact S3013a, a No. 2 soft start fault normally closed contact S3014, a No. 1 soft start fault normally closed contact S3013b, a No. 1 soft start fault normally open contact S3013c, a switching holding relay coil 3019, and a No. 1 soft start final output command. Line package 3010a, No. 2 soft start final output command line package 3010b, main controller motor start command input contact C3016, main controller engagement solenoid valve command input contact C3015, No. 1 soft start fault input contact S3011, No. 2 soft start fault input contact S3012, No. 1 soft start fault line package 3013, No. 2 soft start fault line package 3014, controller auxiliary cranking command contact C7010, manual button auxiliary cranking command contact S7010, auxiliary cranking holding relay contact S3018, auxiliary cranking command output line package 3018 and main cranking operation lock normally closed contact S3019b;

[0024] Among them, the meshing solenoid valve command input contact S7012 is driven by the manual hard circuit control unit and connected to the normally open contact of the relay contact S3022. The main controller meshing solenoid valve command input contact C3015 is connected to the normally closed contact of the relay contact S3022. The main controller meshing solenoid valve command input contact C3015 and the meshing solenoid valve command input contact S7012 are connected in parallel to drive the meshing solenoid valve command output coil 3017 to operate; the motor manual start input contact S7011 is connected to The normally open contact of relay contact S3022 is connected; the main controller motor start command input contact C3016 is connected to the normally closed contact of relay contact S3022; the switching holding relay normally open contact S3019a is connected in parallel with the motor manual start input contact S7011 and the main controller motor start command input contact C3016, and then connected in series with the crank stop controller command contact, the crank stop manual button contact and the auxiliary crank operation lock contact S3018; the number one soft start fault normally closed contact Point S3013a, No. 2 soft start fault normally closed contact S3014, No. 1 soft start fault normally closed contact S3013b, No. 1 soft start fault normally open contact S3013c are connected in parallel; the cranking stop manual button contact is connected to the front contact of the parallel circuit of No. 1 soft start fault normally closed contact S3013a, No. 2 soft start fault normally closed contact S3014, No. 1 soft start fault normally closed contact S3013b, No. 1 soft start fault normally open contact S3013c; No. 1 soft start fault normally closed contact S3013a and No. 2 soft start fault normally closed contact S3014, No. 1 soft start fault normally closed contact S3013b, No. 1 soft start fault normally open contact S3013c The normally closed contact S3014 of soft start fault No. 1 drives the switching holding relay package 3019 in parallel; the normally closed contact S3013b of soft start fault No. 1 drives the final output instruction package 3010a of soft start No. 1; the normally open contact S3013c of soft start fault No. 1 drives the final output instruction package S3010b of soft start No. 2; the soft start fault input contact S3011 drives the soft start fault package 3013 of No. 1 and the soft start fault input contact S3012 drives the soft start fault package 3014 of No. 2. The normally open contact of the controller auxiliary turning command contact C7010 and the relay contact S3022 are connected; the normally closed contact of the manual button auxiliary turning command S7010 and the relay contact S3022 are connected; the controller auxiliary turning command contact C7010, the manual button auxiliary turning command S7010, and the auxiliary turning holding relay contact S3018 are connected in parallel and then connected with the turning stop controller command contact, the turning stop manual button contact and the main turning operation lock normally closed contact S3019b in turn; the main turning operation lock normally closed contact S3019b is connected and drives the auxiliary turning command output package 3018.

[0025] The IoT interface unit has multiple protocol access capabilities including MODBUS protocol, MODBUS TCP / IP protocol, ETHERNET protocol and OPC protocol, and is also equipped with multiple physical media access capabilities including twisted pair, serial and parallel port cables, optical fiber and wireless interface.

[0026] By adopting the above technical solution, the beneficial technical effects of the present invention are:

[0027] 1. The turning gear safety control system described in the present invention includes a main control unit, a data acquisition unit, a switching output unit, an electrical execution unit, a manual hard circuit control unit, an Internet of Things interface unit, an intelligent analysis and monitoring unit and a human-machine control feedback unit. The entire control system is designed with a special control circuit software and hardware topology and has intelligent diagnosis capabilities and Internet of Things access capabilities. It can automatically diagnose fault points and provide processing suggestions, and has the ability to self-heal after a fault occurs while reducing the probability of failure, thereby achieving the purpose of reliable and stable operation of the control system.

[0028] 2. In order to ensure the safe, reliable and stable operation of key equipment, the present invention innovatively applies a multi-redundant hot backup working mode and automatically switches the whole circuit at the key contacts of the control circuit; at the same time, it innovatively applies two control methods, automatic control and pure hard circuit manual control, which can be switched in real time according to working conditions; when outputting control instructions to the motor, according to the hot standby status feedback of the electrical execution unit, real-time and disturbance-free master-slave switching is achieved through hard-wired relay overlap, and after the main device of the soft starter with a fault recovers its function, it can automatically re-enter the hot standby state and re-participate in the switching, reflecting the self-healing performance to the outside.

[0029] In addition, the main control unit of the present invention includes at least two redundant main and auxiliary operation or redundant voting operation main controllers, the data acquisition unit includes at least two sets of redundant parallel operation sensor components, the electrical execution unit includes an engagement solenoid valve, a cranking motor and at least two sets of redundant switching operation soft starters, and optionally, the electrical execution unit also includes a spare auxiliary cranking execution device, and the intelligent analysis and monitoring unit includes at least two sets of redundant main and auxiliary operation or switching operation intelligent analysis monitors. Since the role of nuclear power cranking in the process before and after the steam turbine power generation process of a nuclear power plant is very important and is related to major safety issues and major equipment protection requirements, the redundancy and reliability of the control system is a special requirement for nuclear power cranking and other nuclear-grade and military-grade equipment with high safety requirements, and has the versatility of special industry equipment, but generally the above-mentioned purpose system design often only has redundant control topology design on the main controller and auxiliary IO, or only part of the equipment has simple redundancy, which does not have the performance of real-time voting and disturbance-free switching, resulting in poor reliability and safety. The design idea of ​​the present invention from signal acquisition to final execution of full-process redundancy and full-process voting execution and disturbance-free switching is novel, and can achieve safe and reliable technical effects, so the present invention has high innovation.

[0030] 3. The present invention is equipped with an intelligent analysis and monitoring unit, which can collect parameter information, system instructions, field parameters, etc. during the entire control process, record control events and control trends in real time, and make fault prediction alarms, fault analysis and diagnosis, and fault handling instructions through intelligent analysis.

[0031] 4. The present invention is equipped with an Internet of Things network interface, supports interconnection and expansion of multiple protocols, has the ability to interconnect multiple media such as wired and wireless media, and has plug-and-play application performance.

[0032] 5. The present invention uses an intelligent analysis and monitoring unit to collect parameter information such as the speed of the turbine main shaft meshing driven gear, the speed of the turning motor meshing driving gear, the temperature in the turning transmission mechanism, the lubricating oil pressure parameters, the top shaft oil pressure parameters, the meshing position feedback, the motor starting status, the real-time status of the motor soft starter, etc., and records control events and parameter history curves, and combines the operation process experience program and the background diagnosis program to intelligently analyze the operation status of the device, predict the operation trend, realize fault warning, post-fault analysis and diagnosis, and indicate processing suggestions.

[0033] 6. The present invention fully considers the failures or malfunctions that are prone to occur in various links of the nuclear power turning device during the control process, and prevents and eliminates the failures and malfunctions of the above links at the design level, which can greatly improve the reliability and stability of the operation of the key turning device and the ability to quickly handle and recover after a failure occurs. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a system block diagram of the present invention.

[0035] Figure 2 This is a control topology diagram of the present invention.

[0036] Figure 3 It is a circuit diagram of the switching output unit in the present invention. DETAILED DESCRIPTION

[0037] Example 1

[0038] As a basic implementation of the present invention, this embodiment discloses a turning gear safety control system, such as Figure 1 As shown, it includes a main control unit, a data acquisition unit, a switching output unit, an electrical execution unit, a manual hard circuit control unit, an Internet of Things interface unit, an intelligent analysis and monitoring unit, and a human-machine control feedback unit. The main control unit is respectively connected to the data acquisition unit, the switching output unit, the Internet of Things interface unit, and the human-machine control feedback unit. The intelligent analysis and monitoring unit is connected to the main control unit through the Internet of Things interface unit. The switching output unit is respectively connected to the electrical execution unit and the manual hard circuit control unit. The electrical execution unit is connected to the controlled turning vehicle. The data acquisition unit is respectively connected to the human-machine control feedback unit and the controlled turning vehicle.

[0039] The data acquisition unit is used to collect relevant process parameter information and status feedback of the controlled turning machine and transmit it to the main control unit. The specific parameter information includes the pressure, speed, status feedback, etc. of the controlled turning machine.

[0040] The main control unit is used to perform logical processing on the parameter information collected by the data acquisition unit, generate soft loop control instructions and status signals after processing, and input the status signals and soft loop control instructions into the human-machine control feedback unit and the switching output unit respectively.

[0041] The manual hard circuit control unit is used to manually input hard circuit control instructions for controlling the controlled turning machine to the switching output unit under normal working conditions and / or emergency working conditions, and feed back the status to the human-machine control feedback unit.

[0042] The switching output unit is used to realize the switching output between the soft loop control mode and the hard loop control mode according to the soft loop control instructions and the hard loop control instructions. When the switching output unit receives the soft loop control instruction, it will switch the output control signal of the soft loop control mode to the electrical execution unit; when the switching output unit receives the hard loop control instruction, it will switch the output control signal of the hard loop control mode to the electrical execution unit.

[0043] The electrical execution unit is used to control the operation of the controlled turning gear according to the control signal output by the switching output unit.

[0044] The human-machine control feedback unit is used for feedback display of status signals and input of manual control signals.

[0045] The intelligent analysis and monitoring unit is used to read the parameter information obtained by the main control unit through the Internet of Things interface unit, automatically record control events and parameter historical trends, intelligently analyze the whole process of equipment working conditions, and provide fault warning, fault handling prompt services and remote control functions.

[0046] The IoT interface unit is used to provide the system with comprehensive IoT access capabilities, adapt to the expansion of various functions and performances, and especially provide real-time access and switching capabilities for intelligent analysis equipment and / or remote monitoring equipment. It has multiple protocol access capabilities including MODBUS protocol, MODBUS TCP / IP protocol, ETHERNET protocol and OPC protocol, and is equipped with multiple physical media access capabilities including twisted pair, serial and parallel port cables, optical fiber and wireless interfaces.

[0047] This embodiment uses the above-mentioned special control loop hardware and software topology design and has intelligent diagnosis capabilities and Internet of Things access capabilities. It can automatically diagnose fault points and put forward processing suggestions. It can have the ability to self-heal when faults occur while reducing the probability of failure, which is beneficial to ensuring reliable and stable operation of the control system.

[0048] Example 2

[0049] As a preferred embodiment of the present invention, this embodiment discloses a turning gear safety control system. Based on the first embodiment, this embodiment further defines the main control unit, data acquisition unit, intelligent analysis and monitoring unit, electrical execution unit and switching output unit. Figure 2 As shown, in this embodiment, the main control unit is configured to include at least two redundant main-auxiliary operation or redundant voting operation main controllers, the data acquisition unit is configured to include at least two sets of redundant parallel operation sensor components, the intelligent analysis and monitoring unit is configured to include at least two sets of redundant main-auxiliary operation or switching operation intelligent analysis and monitoring, and the electrical execution unit is configured to include an engagement solenoid valve, a turning motor and at least two sets of redundant switching operation soft starters, and the engagement solenoid valve is connected to the switching output unit, and the soft starter is connected to the switching output unit and the turning motor respectively; after the connection, the engagement solenoid valve is used to drive the combination of the turning motor driving gear and the turbine main shaft driven gear, which is a necessary pre-sequence action for the correct start of the turning. In addition, optionally, the electrical execution unit also includes a spare auxiliary turning actuator connected to the switching output unit, and the spare auxiliary turning actuator is a reciprocating simple turning driven by a hydraulic principle, which provides redundant backup for the turning when a fault occurs and provides emergency protection turning for the shaft system.

[0050] In this embodiment, the main control unit preferably includes a main controller 1 and a main controller 2, the data acquisition unit includes a sensor component 1 and a sensor component 2, the intelligent analysis and monitoring unit includes an intelligent analysis monitor 1 and an intelligent analysis monitor 2, and the electrical execution unit includes a soft starter 1 and a soft starter 2. The specific functions of each component are as follows:

[0051] All sensor components are used to simultaneously collect parameter information of the controlled turning gears, and transmit the collected parameter information to all main controllers at the same time, realizing hot standby and voting of parameter information.

[0052] All main controllers are used to generate and redundantly vote on soft loop control instructions, and input the redundantly voted soft loop control instructions to the switching output unit. It should be noted that the main control unit also includes at least two output units connected to the main controller, and the soft loop control instructions generated by the main controller are input to the switching output unit after the output unit performs redundant voting.

[0053] The soft starter is used to realize real-time switching and disturbance-free switching between soft starters according to the control signal output by the switching output unit.

[0054] The intelligent analysis monitors cooperate with each other to realize historical data record storage, intelligent analysis, remote control functions and backup.

[0055] The switching output unit in this embodiment includes a soft-hard circuit switching unit and an electrical circuit switching unit. The soft-hard circuit switching unit is respectively connected to the manual hard circuit control unit and all main controllers, and the electrical circuit switching unit is respectively connected to the soft-hard circuit switching unit, the soft starter, the engagement solenoid valve, the turning motor and the standby auxiliary turning actuator. Among them, the soft-hard circuit switching unit is used to realize the switching output of the soft circuit control mode and the hard circuit control mode according to the soft circuit control instruction and the hard circuit control instruction. The electrical circuit switching unit is used to obtain a fault feedback signal when one of the soft starters fails, and switch to another soft starter according to the fault feedback signal. And after the soft starter fault is restored and put into hot standby, it automatically enters and switches to the soft starter that has recovered from the fault; the main turning gear engagement solenoid valve outputs the engagement solenoid valve instructions of different hardware and software circuits through the electrical circuit switching unit, and outputs the control instructions to the standby auxiliary turning actuator when the turning motor fails. Optionally, the main controller can also directly drive the electrical execution unit to switch between redundant soft starters through logic processing; as well as switch the engagement solenoid valve; and switch between the main turning gear and the auxiliary turning gear, thereby reducing the probability of failure caused by too many line nodes.

[0056] Further, such as Figure 3 As shown, the manual hard circuit control unit is in pure hard circuit mode, specifically including the main turning gear motor start manual button B7018, the motor start manual output line package 7011, the main turning gear solenoid valve manual self-holding button B7019, the main turning gear solenoid valve manual output line package 7012, the auxiliary turning gear manual button B7017, and the auxiliary turning gear output line package 7010.

[0057] The soft and hard circuit switching unit includes a switching switch B3021, a switching relay coil 3022 and a relay contact S3022. The switching switch B3021 is connected to the switching relay coil 3022, and the relay contact S3022 is connected to the electrical circuit switching unit and the main controller respectively.

[0058] The electrical circuit switching unit includes an engagement solenoid valve command input contact S7012, an engagement solenoid valve command output coil 3017, a switching holding relay normally open contact S3019a, a motor manual start input contact S7011, a cranking stop manual button contact, a cranking stop controller command contact, an auxiliary cranking operation lock contact S3018, a No. 1 soft start fault normally closed contact S3013a, a No. 2 soft start fault normally closed contact S3014, a No. 1 soft start fault normally closed contact S3013b, a No. 1 soft start fault normally open contact S3013c, a switching holding relay coil 3019, and a No. 1 soft start final output command. Coil package 3010a, No. 2 soft start final output command coil package 3010b, main controller motor start command input contact C3016, main controller engagement solenoid valve command input contact C3015, No. 1 soft start fault input contact S3011, No. 2 soft start fault input contact S3012, No. 1 soft start fault coil package 3013, No. 2 soft start fault coil package 3014, controller auxiliary cranking command contact C7010, manual button auxiliary cranking command contact S7010, auxiliary cranking holding relay contact S3018, auxiliary cranking command output coil package 3018 and main cranking operation lock normally closed contact S3019b.

[0059] Among them, the engagement solenoid valve command input contact S7012 is driven by the main turning car solenoid valve manual output line package 7012 in the manual hard circuit control unit and is connected to the normally open contact of the relay contact S3022. The main controller engagement solenoid valve command input contact C3015 is connected to the normally closed contact of the relay contact S3022. The main controller engagement solenoid valve command input contact C3015 and the engagement solenoid valve command input contact S7012 are connected in parallel to drive the engagement solenoid valve command output line package 3017 to operate; The manual start input contact S7011 of the machine is connected to the normally open contact of the relay contact S3022; the main controller motor start command input contact C3016 is connected to the normally closed contact of the relay contact S3022; the switching holding relay normally open contact S3019a is connected in parallel with the motor manual start input contact S7011 and the main controller motor start command input contact C3016, and then connected in series with the crank stop controller command contact, the crank stop manual button contact and the auxiliary crank operation lock contact S3018 ; No. 1 soft start fault normally closed contact S3013a, No. 2 soft start fault normally closed contact S3014, No. 1 soft start fault normally closed contact S3013b, No. 1 soft start fault normally open contact S3013c are connected in parallel; the cranking stop manual button contact is connected to the front contact of the parallel circuit of No. 1 soft start fault normally closed contact S3013a, No. 2 soft start fault normally closed contact S3014, No. 1 soft start fault normally closed contact S3013b, No. 1 soft start fault normally open contact S3013c; No. 1 soft start fault normally closed contact S30 13a and the No. 2 soft start fault normally closed contact S3014 drive the switching holding relay package 3019 in parallel; No. 1 soft start fault normally closed contact S3013b drives No. 1 soft start final output instruction package 3010a; No. 1 soft start fault normally open contact S3013c drives No. 2 soft start final output instruction package S3010b; No. 1 soft start fault input contact S3011 drives No. 1 soft start fault package 3013, and No. 2 soft start fault input contact S3012 drives package No. 2 soft start fault package 3014. The normally open contact of the controller auxiliary turning command contact C7010 and the relay contact S3022 are connected; the normally closed contact of the manual button auxiliary turning command S7010 and the relay contact S3022 are connected; the controller auxiliary turning command contact C7010, the manual button auxiliary turning command S7010, and the auxiliary turning holding relay contact S3018 are connected in parallel and then connected with the turning stop controller command contact, the turning stop manual button contact and the main turning operation lock normally closed contact S3019b in turn; the main turning operation lock normally closed contact S3019b is connected and drives the auxiliary turning command output package 3018.

[0060] When the switching switch B3021 is closed, the switching relay coil 3022 is energized and drives the normally open point of the relay contact S3022 to close. At this time, the switching output unit switches the output control signal of the hard loop control mode to the electrical execution unit. According to the hard loop control instruction input by the manual hard loop control unit, the engagement solenoid valve instruction input contact S7012 is connected, driving the engagement solenoid valve instruction output coil 3017 to send the engagement solenoid valve action instruction to the engagement solenoid valve.

[0061] When the switch B3021 is disconnected, the switching relay coil 3022 loses power, and the normally closed point of the relay contact S3022 is closed. At this time, the switching output unit switches the output soft circuit control mode control signal to the electrical execution unit. According to the soft circuit control instruction input by the main control unit, the main controller engages the solenoid valve instruction input contact C3015 is connected, and the engaging solenoid valve instruction output coil 3017 is driven to send the engaging solenoid valve action instruction to the engaging solenoid valve. Optionally, the normally closed relay contact S3022 and the main controller engages the solenoid valve instruction input contact C3015 circuit are not set, and the controller directly outputs the instruction in parallel with the electrical circuit switching unit to control the engaging solenoid valve.

[0062] When the switching switch B3021 is closed, the switching relay coil 3022 is energized and drives the normally open point of the relay contact S3022 to close. At this time, the switching output unit switches the output hard loop control mode to the electrical execution unit. According to the hard loop control instruction input by the manual hard loop control unit, the manual button auxiliary turning gear instruction input contact S7010 is turned on, driving the auxiliary turning gear instruction output coil 3018 to send the auxiliary turning gear instruction to the auxiliary turning gear.

[0063] When the switch B3021 is disconnected, the switching relay coil 3022 loses power, and the normally closed point of the relay contact S3022 is closed. At this time, the switching output unit switches the output soft circuit control mode to the electrical execution unit. According to the soft circuit control instruction input by the main control unit, the auxiliary turning gear instruction input contact C7010 of the main controller is connected, and the auxiliary turning gear instruction output coil 3018 is driven to send the auxiliary turning gear instruction to the auxiliary turning gear. Optionally, the normally closed relay contact S3022 and the main controller auxiliary turning gear instruction input contact C7010 circuit are not set, and the controller directly outputs the instruction and controls the auxiliary turning gear in parallel with the electrical circuit switching unit. And the auxiliary turning gear locks the auxiliary turning gear through S3019b when the main turning gear is running to prevent interference between the main and auxiliary turning gears.

[0064] It should also be noted that when the normally open contact of the relay contact S3022 is closed, the electrical circuit switching unit operates in the hard circuit control mode, the motor start input contact S7011 sent by the manual hard circuit control unit is connected, and drives the No. 1 soft start final output instruction package 3010a, and at the same time switches to keep the relay package 3019 in action, switches to keep the normally open contact S3019a of the relay closed, and the circuit realizes self-holding drive of soft starter No. 1 (soft starter 1). If soft starter No. 1 fails in the above process, the soft starter No. 1 fault input contact S3011 is closed, the soft starter No. 1 fault line package 3013 is activated, the main soft starter fault normally closed contact S3013a is disconnected, the auxiliary soft starter fault normally closed contact S3014 is still closed, and the switching holding relay line package 3019 is still activated; the main soft starter fault normally closed contact S3013b is disconnected, the soft starter No. 1 final output instruction line package 3010a loses power, the main soft starter fault normally open contact S3013c is closed, the soft starter No. 2 final output instruction line package 3010b is energized, and the circuit becomes a self-holding drive for soft starter No. 2 (soft starter 2), completing the disturbance-free switching between soft starters. If the fault of soft starter No. 1 has been reset or repaired in the above process, the contact of soft starter No. 1 fault input contact S3011 is disconnected, the soft starter No. 1 fault line package 3013 loses power, the main soft starter fault normally closed contact S3013a is closed, the auxiliary soft starter fault normally closed contact S3014 is still closed, and the switching holding relay line package 3019 is still in action; soft starter No. 1 re-enters the hot standby state. The main soft starter fault normally closed contact S3013b is closed, the final output instruction line package 3010a of soft starter No. 1 is re-energized, the main soft starter fault normally open contact S3013c is disconnected, the final output instruction line package 3010b of soft starter No. 2 loses power, and the circuit becomes a self-holding drive for soft starter No. 1, completing the disturbance-free switching of the soft starter. If both the No. 1 soft starter and the No. 2 soft starter fail during one working process, the main soft starter failure normally closed contact S3013a is disconnected, the auxiliary soft starter failure normally closed contact S3014 is disconnected, the switching holding relay package 3019 loses power, the No. 1 soft starter final output command package 3010a loses power, the No. 2 soft starter final output command package 3010b loses power, and the electrical circuit switching unit exits the working state. And the main turning car locks the main turning car through S3018 when the auxiliary turning car is running to prevent the main and auxiliary turning cars from interfering with each other.

[0065] The above description is only a specific implementation mode of the present invention. Any feature disclosed in this specification, unless otherwise stated, can be replaced by other alternative features that are equivalent or have similar purposes; all the disclosed features, or all the steps in the methods or processes, except for mutually exclusive features and / or steps, can be combined in any way.

Claims

1. A turning gear safety control system, characterized in that: It includes a main control unit, a data acquisition unit, a switching output unit, an electrical execution unit, a manual hard circuit control unit, an Internet of Things interface unit, an intelligent analysis and monitoring unit and a human-machine control feedback unit. The main control unit is respectively connected to the data acquisition unit, the switching output unit, the Internet of Things interface unit and the human-machine control feedback unit. The intelligent analysis and monitoring unit is connected to the main control unit through the Internet of Things interface unit. The switching output unit is respectively connected to the electrical execution unit and the manual hard circuit control unit. The electrical execution unit is connected to the controlled turning car. The data acquisition unit is respectively connected to the human-machine control feedback unit and the controlled turning car. The data acquisition unit is used to collect parameter information of the controlled turning vehicle and transmit it to the main control unit; The main control unit is used to perform logic processing on the parameter information to generate soft loop control instructions and status signals, and input the status signals and soft loop control instructions into the human-machine control feedback unit and the switching output unit respectively; The manual hard circuit control unit is used to manually input the hard circuit control command of the controlled turning vehicle to the switching output unit under normal working conditions and / or emergency working conditions, and feed back the status to the human-machine control feedback unit; The switching output unit is used to realize the switching output of the soft loop control mode and the hard loop control mode according to the soft loop control instruction and the hard loop control instruction; The electrical execution unit is used to control the operation of the controlled turning gear according to the control signal output by the switching output unit; The human-machine control feedback unit is used for feedback display of status signals and input of manual control signals; The intelligent analysis and monitoring unit is used to read the parameter information obtained by the main control unit through the IoT interface unit, automatically record control events and parameter historical trends, intelligently analyze the whole process of equipment working conditions, and provide fault warning, fault handling prompt services and remote control functions; The main control unit includes at least two redundant main and auxiliary operation or redundant voting operation main controllers, the data acquisition unit includes at least two sets of redundant parallel operation sensor components, the intelligent analysis and monitoring unit includes at least two sets of redundant main and auxiliary operation or switching operation intelligent analysis and monitoring, the electrical execution unit includes an engagement solenoid valve, a cranking motor and at least two sets of redundant switching operation soft starters, the engagement solenoid valve is connected to the switching output unit, and the soft starter is respectively connected to the switching output unit and the cranking motor; wherein, The sensor components are used to collect parameter information at the same time, and transmit the collected parameter information to all main controllers at the same time, so as to realize hot standby and voting of parameter information; The main controller is used to generate and redundantly vote on the soft loop control instructions, and input the redundantly voted soft loop control instructions to the switching output unit; The soft starter is used to realize real-time switching and disturbance-free switching between soft starters according to the control signal output by the switching output unit; Intelligent analysis monitors cooperate with each other to realize historical data record storage, intelligent analysis, remote control functions and backup; The switching output unit includes a soft-hard circuit switching unit and an electrical circuit switching unit. The soft-hard circuit switching unit is respectively connected to the manual hard circuit control unit and the main controller, and the electrical circuit switching unit is respectively connected to the soft-hard circuit switching unit, the soft starter and the engagement solenoid valve; wherein the soft-hard circuit switching unit is used to realize the switching output of the soft circuit control mode and the hard circuit control mode according to the soft circuit control instructions and the hard circuit control instructions; the electrical circuit switching unit is used to obtain a fault feedback signal when one of the soft starters fails, and switch to another soft starter according to the fault feedback signal; and after the soft starter fault is recovered and put into hot standby, automatically enter and switch to the soft starter of the fault recovery; and output the control instructions of the engagement solenoid valve and the control instructions of the standby auxiliary turning actuator.

2. A turning gear safety control system according to claim 1, characterized in that: The main control unit also includes at least two output units connected to the main controller. The soft loop control instructions generated by the main controller are input to the switching output unit after the output units implement redundant resolution.

3. A turning gear safety control system according to claim 1, characterized in that: The electrical execution unit further comprises a standby auxiliary turning gear execution device connected to the switching output unit.

4. A turning gear safety control system according to claim 1, characterized in that: The soft and hard circuit switching unit includes a switching switch B3021, a switching relay coil 3022 and a relay contact S3022, the switching switch B3021 is connected to the switching relay coil 3022, and the relay contact S3022 is connected to the electrical circuit switching unit and the main controller respectively; The electrical circuit switching unit includes an engagement solenoid valve command input contact S7012, an engagement solenoid valve command output coil 3017, a switching holding relay normally open contact S3019a, a motor manual start input contact S7011, a cranking stop manual button contact, a cranking stop controller command contact, an auxiliary cranking operation lock contact S3018, a No. 1 soft start fault normally closed contact S3013a, a No. 2 soft start fault normally closed contact S3014, a No. 1 soft start fault normally closed contact S3013b, a No. 1 soft start fault normally open contact S3013c, a switching holding relay coil 3019, and a No. 1 soft start final output command. Line package 3010a, No. 2 soft start final output command line package 3010b, main controller motor start command input contact C3016, main controller engagement solenoid valve command input contact C3015, No. 1 soft start fault input contact S3011, No. 2 soft start fault input contact S3012, No. 1 soft start fault line package 3013, No. 2 soft start fault line package 3014, controller auxiliary cranking command contact C7010, manual button auxiliary cranking command contact S7010, auxiliary cranking holding relay contact S3018, auxiliary cranking command output line package 3018 and main cranking operation lock normally closed contact S3019b; Among them, the engagement solenoid valve command input contact S7012 is driven by the manual hard circuit control unit and connected to the normally open contact of the relay contact S3022, the main controller engagement solenoid valve command input contact C3015 is connected to the normally closed contact of the relay contact S3022, the main controller engagement solenoid valve command input contact C3015 and the engagement solenoid valve command input contact S7012 are connected in parallel to drive the engagement solenoid valve command output coil 3017 to operate; the motor manual start input contact S7011 is connected to the normally open contact of the relay contact S3022; the main controller motor start command input contact C3016 is connected to the normally closed contact of the relay contact S3022. Contact connection; the normally open contact S3019a of the switching holding relay is connected in parallel with the motor manual start input contact S7011 and the main controller motor start command input contact C3016, and then connected in series with the cranking stop controller command contact, the cranking stop manual button contact and the auxiliary cranking operation lock contact S3018; the No. 1 soft start fault normally closed contact S3013a, the No. 2 soft start fault normally closed contact S3014, the No. 1 soft start fault normally closed contact S3013b, and the No. 1 soft start fault normally open contact S3013c are connected in parallel; the cranking stop manual button contact is connected in series with the No. 1 soft start fault normally closed contact S3013a and the No. 2 soft start fault normally closed contact S301 4. The front contacts of the parallel circuit of the No. 1 soft start fault normally closed contact S3013b and the No. 1 soft start fault normally open contact S3013c are connected; the No. 1 soft start fault normally closed contact S3013a and the No. 2 soft start fault normally closed contact S3014 are connected in parallel to drive the switching holding relay line package 3019; the No. 1 soft start fault normally closed contact S3013b drives the No. 1 soft start final output instruction line package 3010a; the No. 1 soft start fault normally open contact S3013c drives the No. 2 soft start final output instruction line package S3010b; the No. 1 soft start fault input contact S3011 drives the No. 1 soft start fault line package 3013 and the No. 2 soft start fault input contact S3012 drive the ... Package No. 2 soft start fault line package 3014; the normally open contact of the controller auxiliary cranking command contact C7010 and the relay contact S3022 are connected; the normally closed contact of the manual button auxiliary cranking command S7010 and the relay contact S3022 are connected; the controller auxiliary cranking command contact C7010, the manual button auxiliary cranking command S7010, and the auxiliary cranking holding relay contact S3018 are connected in parallel and then connected in turn with the cranking stop controller command contact, the cranking stop manual button contact and the main cranking operation lock normally closed contact S3019b; the main cranking operation lock normally closed contact S3019b is connected and drives the auxiliary cranking command output line package 3018.

5. A turning gear safety control system according to claim 1, characterized in that: The IoT interface unit has multiple protocol access capabilities including MODBUS protocol, MODBUS TCP / IP protocol, ETHERNET protocol and OPC protocol, and is also equipped with multiple physical media access capabilities including twisted pair, serial and parallel port cables, optical fiber and wireless interface.

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