Control method and system for main circulating pump of valve cooling system, electronic equipment and medium

Abstract

The invention discloses a main circulating pump control method and system of a valve cooling system, electronic equipment and a storage medium. According to the scheme, an automatic starting command is responded, a soft starter is driven to softly start a first main circulating pump, and first starting time is recorded; if the first starting time is greater than or equal to the first preset time, switching the power frequency operation of the first main circulating pump, and after the first main circulating pump operates for a second preset time, stopping operating the soft starter; second operation time of the first main circulating pump is recorded, and if the second operation time is longer than or equal to third preset time, the main circulating pump is automatically switched; and when the first main circulating pump breaks down, the main circulating pumps are switched according to the fault type. Two main circulating pumps are arranged, the operation time of the main circulating pumps and whether faults occur or not are monitored, the main circulating pumps are switched when the operation time of the main circulating pumps meets a threshold value or the main circulating pumps break down, power frequency operation is switched after soft start, and the operation stability of the valve cooling system is improved; the embodiment of the invention can be widely applied to the technical field of circulating pump control.

Description

Technical Field

[0001] The present invention relates to the technical field of circulating pump control, and in particular to a control method, system, electronic equipment and storage medium for a main circulating pump of a valve cooling system. Background Art

[0002] The main valve cooling system is usually used for heat dissipation of large power devices. The valve cooling system transports coolant through the main circulation pump to dissipate heat for large power devices. The existing valve cooling system needs to run for a long time to provide continuous heat dissipation for large power devices. When the main circulation pump has an abnormal situation, the main circulation pump needs to be shut down for inspection and then restarted after the fault is resolved, resulting in low operating stability of the valve cooling system. Summary of the invention

[0003] The main purpose of the embodiments of the present invention is to provide a valve cooling system main circulation pump control method, system, electronic equipment and storage medium, which can improve the stability of the valve cooling system operation.

[0004] To achieve the above object, an embodiment of the present invention provides a method for controlling a main circulation pump of a valve cooling system, the method comprising:

[0005] In response to the automatic start command, driving the soft starter to perform soft start on the first main circulation pump and recording the first start time;

[0006] If the first startup time is greater than or equal to the first preset time, the first main circulation pump is controlled to switch to power frequency operation, and the first operation time is recorded; wherein the first operation time represents the operation time of the soft starter after the first main circulation pump is switched to power frequency operation;

[0007] If the first running time is greater than or equal to a second preset time, controlling the soft starter to stop running;

[0008] Record the second running time of the first main circulation pump, and compare the second running time with a third preset time; if the running time is greater than or equal to the third preset time, automatically switch the circulation pump operation for the first main circulation pump; wherein the second running time represents the running time of the first main circulation pump switching to power frequency operation;

[0009] The first main circulation pump is monitored for faults. If a fault is detected in the first main circulation pump, the fault type is determined, and fault switching is performed on the first main circulation pump according to the fault type.

[0010] In some embodiments, the automatic switching operation on the first main circulation pump specifically includes:

[0011] driving the soft starter to perform soft start on the second main circulation pump, recording the second start time, and controlling the first main circulation pump to stop operating at the power frequency;

[0012] If the second start-up time is greater than or equal to the first preset time, control the second main circulation pump to switch to industrial frequency operation, and record the second operation time;

[0013] If the second running time is greater than or equal to the second preset time, the soft starter is controlled to stop running.

[0014] In some embodiments, the method further comprises:

[0015] If the second main circulation pump fails to start, controlling the first main circulation pump to stop operating at the power frequency;

[0016] Delaying for a third preset time, performing fault detection on the second main circulation pump, and if it is detected that the second main circulation pump has a fault, determining the fault type of the fault;

[0017] If the fault type is that the current main circulation pump outlet water pressure is low and the current main circulation pump inlet valve pressure is low, a first alarm message is generated, and the soft starter is driven to perform a soft start on the first main circulation pump, and a fourth start time is recorded;

[0018] If the fourth starting time is greater than or equal to the first preset time, the first main circulation pump is controlled to switch to industrial frequency operation, and after the first main circulation pump continues to run for the second preset time, the soft starter is controlled to stop running.

[0019] In some embodiments, the method further comprises:

[0020] Performing fault detection on the first main circulation pump, and if it is detected that the first main circulation pump has a fault, determining the fault type of the fault;

[0021] If the fault type is that the current main circulation pump control circuit breaker is tripped, the soft starter is driven to perform a soft start on the second main circulation pump, the fifth start time is recorded, and the first main circulation pump is controlled to stop operating at the power frequency;

[0022] If the fifth starting time is greater than or equal to the first preset time, the first main circulation pump is controlled to switch to industrial frequency operation, and after the first main circulation pump continues to run for the second preset time, the soft starter is controlled to stop running.

[0023] In some embodiments, performing fault switching on the first main circulation pump according to the fault type specifically includes:

[0024] Match the fault type with the preset fault table. If the fault type is the first type, generate the first alarm information, drive the soft starter to perform soft start on the second main circulation pump, record the third start time, and control the first main circulation pump to stop the power frequency operation; wherein, the first fault type includes one or more of the current main circulation pump outlet water pressure is low, the current main circulation pump inlet valve pressure is low, the current main circulation pump fault, the current main circulation pump overheating, the current main circulation pump control circuit breaker tripping or the station power supply power failure fault;

[0025] If the third start-up time is greater than or equal to the first preset time, control the second main circulation pump to switch to industrial frequency operation, and record the third operation time;

[0026] If the third running time is greater than or equal to the second preset time, the soft starter is controlled to stop running.

[0027] In some embodiments, the method further comprises:

[0028] If the fault type is the second type, the second operating time is reset; wherein the second type includes any one of a first main circulation pump soft start circuit fault, a second main circulation pump soft start circuit fault, a first main circulation pump power frequency fault, a second main circulation pump power frequency fault, a first main circulation pump safety switch not closed, a second main circulation pump safety switch not closed, a first AC power supply fault, a second AC power supply fault, or a current main circulation pump low water outlet pressure, and a current main circulation pump low inlet valve pressure.

[0029] In some embodiments, the method further comprises:

[0030] If the fault type is a main circulation pump power frequency fault or the main circulation pump safety switch is not closed, the switching operation of the main circulation pump is not performed; wherein, the main circulation pump power frequency fault includes a first main circulation pump soft start circuit fault and a second main circulation pump soft start circuit fault, the main circulation pump safety switch not closed includes a first main circulation pump safety switch not closed and a second main circulation pump safety switch not closed, and the main circulation pump includes the first main circulation pump and the second main circulation pump.

[0031] To achieve the above object, another aspect of an embodiment of the present invention provides a valve cooling system main circulation pump control system, the system comprising:

[0032] The first module is used for driving the soft starter to perform soft start on the first main circulation pump in response to the automatic start command, and recording the first start time;

[0033] The second module is used for controlling the first main circulation pump to switch to power frequency operation and recording the first operation time if the first start-up time is greater than or equal to the first preset time; wherein the first operation time represents the operation time of the soft starter after the first main circulation pump switches to power frequency operation;

[0034] A third module is used to control the soft starter to stop running if the first running time is greater than or equal to a second preset time;

[0035] The fourth module is used to record the second running time of the first main circulation pump, and compare the second running time with the third preset time; if the running time is greater than or equal to the third preset time, perform an automatic switching operation on the first main circulation pump; wherein the second running time represents the running time of the first main circulation pump switching to power frequency operation;

[0036] The fifth module is used to perform fault monitoring on the first main circulation pump, and if a fault is detected in the first main circulation pump, determine the fault type, and perform fault switching on the first main circulation pump according to the fault type.

[0037] To achieve the above objective, another aspect of an embodiment of the present application provides an electronic device, the electronic device comprising a memory and a processor, the memory storing a computer program, and the processor implementing the above-mentioned method when executing the computer program.

[0038] To achieve the above objective, another aspect of an embodiment of the present application provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the method described above is implemented.

[0039] The implementation of the embodiment of the present invention includes the following beneficial effects: the embodiment provides a control method, system, electronic device and storage medium for the main circulation pump of a valve cooling system. The scheme drives the soft starter to perform soft start on the first main circulation pump by responding to the automatic start command, and records the first start time; if the first start time is greater than or equal to the first preset time, the first main circulation pump is controlled to switch to power frequency operation, and after the first main circulation pump runs for the second preset time, the soft starter is controlled to stop running; the second running time of the first main circulation pump is recorded, and if the second running time is greater than or equal to the third preset time, the first main circulation pump is automatically switched; at the same time, fault monitoring is performed when the first main circulation pump is running, and if the first main circulation pump fails, the first main circulation pump is switched according to the fault type of the fault. By setting two main circulation pumps, monitoring the running time of the main circulation pump and whether a fault occurs, switching the main circulation pump to run when the running time of the main circulation pump meets the threshold or the main circulation pump fails, and setting the soft start before switching to power frequency operation to improve the smoothness of the main circulation pump switching and improve the stability of the valve cooling system operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 It is a schematic flow chart of the steps of a method for controlling a main circulation pump of a valve cooling system provided by an embodiment of the present invention;

[0041] Figure 2 It is a schematic flow chart of the steps of executing soft start in a valve cooling system main circulation pump control method provided by an embodiment of the present invention;

[0042] Figure 3 It is a schematic flow chart of the steps of executing the fault switching back logic in a valve cooling system main circulation pump control method provided by an embodiment of the present invention;

[0043] Figure 4 It is another schematic flow chart of steps for executing fault switching back logic in a valve cooling system main circulation pump control method provided by an embodiment of the present invention;

[0044] Figure 5 It is a schematic flow chart of the steps of executing the main pump failure switching logic of a valve cooling system main circulation pump control method provided by an embodiment of the present invention;

[0045] Figure 6 It is a schematic diagram of a step flow of a specific embodiment provided by an embodiment of the present invention;

[0046] Figure 7 It is a structural block diagram of a valve cooling system main circulation pump control system provided by an embodiment of the present invention;

[0047] Figure 8 It is a schematic diagram of the hardware structure of an electronic device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0048] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The step numbers in the following embodiments are only provided for the convenience of explanation and description, and the order between the steps is not limited in any way. The execution order of each step in the embodiment can be adaptively adjusted according to the understanding of those skilled in the art.

[0049] In the following description, reference is made to “some embodiments”, which describe a subset of all possible embodiments, but it will be understood that “some embodiments” may be the same subset or different subsets of all possible embodiments and may be combined with each other without conflict.

[0050] In the following description, the terms "first\second\third" involved are merely used to distinguish similar objects and do not represent a specific ordering of the objects. It can be understood that "first\second\third" can be interchanged with a specific order or sequence where permitted, so that the embodiments of the present invention described herein can be implemented in an order other than that illustrated or described herein.

[0051] Unless otherwise defined, all technical and scientific terms used in the embodiments of the present invention have the same meanings as those commonly understood by those skilled in the art of the present invention. The terms used in the embodiments of the present invention are only for the purpose of describing the embodiments of the present invention and are not intended to limit the present invention.

[0052] Figure 1 is an optional flow chart of a valve cooling system main circulation pump control method provided by an embodiment of the present invention, Figure 1 The method may include but is not limited to steps S101 to 105.

[0053] Step S101, in response to an automatic start command, driving a soft starter to perform a soft start on a first main circulation pump, and recording a first start time;

[0054] Step S102, if the first start-up time is greater than or equal to the first preset time, control the first main circulation pump to switch to power frequency operation, and record the first operation time; wherein the first operation time represents the operation time of the soft starter after the first main circulation pump switches to power frequency operation;

[0055] Step S103, if the first running time is greater than or equal to the second preset time, control the soft starter to stop running;

[0056] Step S104, recording the second running time of the first main circulation pump, and comparing the second running time with the third preset time; if the running time is greater than or equal to the third preset time, automatically switching the circulation pump operation is performed on the first main circulation pump; wherein the second running time represents the running time of the first main circulation pump switching to the power frequency operation;

[0057] Step S105 , performing fault monitoring on the first main circulation pump, and if it is detected that the first main circulation pump has a fault, determining the fault type, and performing fault switching on the first main circulation pump according to the fault type.

[0058] In the steps S101 to S105 shown in the embodiment of the present invention, one main and one standby main circulation pump are arranged in the valve cooling system; the main circulation pump has the function of on-site manual control start and stop, which is convenient for maintenance personnel to manually stop the main circulation pump for maintenance and repair, and restore the main circulation pump to run again by manual start; the main circulation pump also has automatic control function, including on-site automatic control and remote automatic control, and the priority is from high to low, namely remote automatic control, on-site automatic control and manual control; when the automatic control function is in effect, the manual control fails, and the converter valve of the valve cooling system During operation, the valve cooling system is not allowed to stop; after the operation and maintenance personnel input the automatic control command to the valve cooling system on-site or through the remote control equipment, the PLC of the valve cooling system drives the soft starter to control the soft start of the first main circulation pump in the valve cooling system through the set command, and continues to run for a period of time, such as 3 seconds, so that the first main circulation pump can reach stability after starting; then, the soft starter outputs the power frequency bypass contact, so that the power frequency contactor connected to the first main circulation pump is energized, and the first main circulation pump is switched to power frequency operation; at this time, the soft starter still keeps running, and after the first main circulation pump runs for a certain period of time The soft starter is controlled to exit operation, such as 5 seconds, so as to realize the seamless connection of the soft start of the first main circulation pump to the power frequency operation, and improve the operation stability of the valve cooling system; after the first main circulation pump is switched to the power frequency operation, the continuous operation time of the first main circulation pump is recorded by a timer set in the valve cooling system, and the time recorded by the timer is compared with the preset automatic switching cycle in real time, which is set to 168 hours in this embodiment; when the first main circulation pump continuously operates without faults for a period of time that satisfies the automatic switching cycle, the PLC program controls the currently running first main circulation pump to switch to the second main circulation pump currently used as a backup, and controls the first main circulation pump to stop running, and the operation and maintenance personnel can maintain the first main circulation pump to reduce the risk of failure; during the operation of the first main circulation pump, the PLC program monitors the first main circulation pump in real time for faults. When the first main circulation pump fails, the PLC program determines the type of fault that occurs in the first main circulation pump, takes corresponding processing according to the type of fault that occurs, generates an alarm message, and switches the currently running main circulation pump to the second main circulation pump, and controls the faulty first main circulation pump to stop running for maintenance.

[0059] In step S101 of some embodiments, after the first main circulation pump is started, it continuously outputs a set signal to the PLC program so that the PLC program can obtain the working status of the currently running main circulation pump. The running main circulation pump stops outputting the set signal and stops running only when the system displays an alarm message of "request to stop water cooling" or the automatic stop button is pressed. At the same time, after receiving the automatic start command, the PLC program drives the soft starter to control the soft start of the first main circulation pump. If the soft starter fails and cannot perform the start operation, the PLC directly controls the first main circulation pump to execute the automatic start command, and is forced to switch to the industrial frequency operation after executing for a certain period of time. In this embodiment, the first main circulation pump is forced to switch to the industrial frequency operation after 5 seconds.

[0060] See also Figure 2 In some embodiments, step S104 may include but is not limited to steps S201 to S203:

[0061] Step S201, driving the soft starter to perform soft start on the second main circulation pump, recording the second start time, and controlling the first main circulation pump to stop operating at the power frequency;

[0062] Step S202, if the second start-up time is greater than or equal to the first preset time, control the second main circulation pump to switch to industrial frequency operation, and record the second operation time;

[0063] Step S203: if the second running time is greater than or equal to the second preset time, control the soft starter to stop running.

[0064] In step S201 of some embodiments, the PLC program determines through the time recorded by the timer that the currently running first main circulation pump has been running without fault for a period of time, and then the PLC program drives the soft starter to control the second main circulation pump currently serving as a backup to soft start, and controls the currently running first main circulation pump to stop running; illustratively, in this embodiment, it is set that after the first main circulation pump runs without fault for 168 hours, the PLC program executes the main pump automatic switching logic to switch the currently running main circulation pump.

[0065] In step S202 of some embodiments, the PLC program drives the soft starter to control the soft start of the second main circulation pump. After the soft starter is started for a period of time, the soft starter outputs the industrial frequency operation contact, and the industrial frequency operation contactor is closed, so that the second main circulation pump is switched to industrial frequency operation, and the duration of the second main circulation pump switching to the industrial frequency operation state is recorded; exemplarily, in this embodiment, after the soft starter controls the soft start of the second main circulation pump for 3 seconds, the soft starter outputs the industrial frequency operation contact, the industrial frequency contactor of the second main circulation pump is closed, and the second main circulation pump is switched to industrial frequency operation.

[0066] In step S203 of some embodiments, after the second main circulation pump is switched to the industrial frequency operation state and runs for a period of time, the soft starter exits the operation; illustratively, the soft starter exits the operation after a delay of 5 seconds after the second main circulation pump is switched to the industrial frequency operation; in this embodiment, when the soft starter fails and cannot control the soft start of the second main circulation pump, the PLC program controls the second main circulation pump to execute the start command for 5 seconds, and then the PLC program outputs the industrial frequency operation contact, the second main circulation pump is switched to the industrial frequency operation, and the soft starter exits the operation after a delay of 5 seconds after the second main circulation pump is switched to the industrial frequency operation.

[0067] See also Figure 3 In some embodiments, step S104 may include but is not limited to steps S301 to S304:

[0068] Step S301, if the second main circulation pump fails to start, the first main circulation pump is controlled to stop operating at the power frequency;

[0069] Step S302, delaying a third preset time, performing fault detection on the second main circulation pump, and if a fault is detected in the second main circulation pump, determining the fault type;

[0070] Step S303: if the fault type is that the current main circulation pump outlet water pressure is low and the current main circulation pump inlet valve pressure is low, a first alarm message is generated, and the soft starter is driven to perform a soft start on the first main circulation pump, and a fourth start time is recorded;

[0071] Step S304: if the fourth start-up time is greater than or equal to the first preset time, the first main circulation pump is controlled to switch to industrial frequency operation, and after the first main circulation pump continues to run for a second preset time, the soft starter is controlled to stop running.

[0072] In step S301 of some embodiments, if the PLC program executes the automatic switching logic and fails to switch the currently running main circulation pump from the first main circulation pump to the second main circulation pump currently serving as a backup, the PLC executes the automatic switching logic to control the first main circulation pump to stop running; the flow control valve of the valve cooling system is not allowed to stop during operation, so the PLC program needs to control the operation of the main circulation pump.

[0073] In step S302 of some embodiments, since the system pressure will fluctuate to a certain extent when the main circulation pump is switched, which may cause the system to falsely report an alarm message of low pressure, the PLC program performs fault detection on the second main circulation pump after a delay, waiting for the pressure fluctuation caused by the switching of the main circulation pump to return to stability, thereby reducing false alarms; if the PLC program detects that the second main circulation pump has a fault, it determines the fault type of the fault, and the PLC program determines whether to switch back to the original main circulation pump to continue operation according to the type of fault that occurs.

[0074] In step S303 of some embodiments, the PLC determines that the fault of the second main circulation pump is "low main pump outlet water pressure" and "low inlet valve pressure", and the system issues a corresponding alarm message; the system detects that the detection value of any main pump outlet water pressure transmitter is less than or equal to the low pressure protection setting value, and issues an alarm message of "low main pump outlet water pressure" after a delay of 3 seconds; when the system detects that the detection value of any main circulation pump inlet valve pressure transmitter is less than or equal to the low pressure protection setting value, it issues an alarm of "low inlet valve pressure" after a delay of 3 seconds; after determining the type of fault, the PLC program drives the soft starter to control the first main circulation pump to perform soft start, realize the return of the main circulation pump, and ensure the operation of the valve cooling system;

[0075] In step S304 of some embodiments, the soft starter controls the soft start of the first main circulation pump. After the soft starter controls the soft start of the first main circulation pump for a period of time, the soft starter sends out an industrial frequency operation contact, the industrial frequency contactor of the first main circulation pump is closed, and the first main circulation pump is switched to industrial frequency operation; after the first main circulation pump is switched to industrial frequency operation, the soft starter exits operation after a certain delay, thereby realizing seamless switching between soft start and industrial frequency operation of the first main circulation pump; in this embodiment, the soft starter exits operation after a delay of 5 seconds.

[0076] See also Figure 4 In some embodiments, step S104 may include but is not limited to steps S401 to S403:

[0077] Step S401, performing fault detection on the first main circulation pump, and if it is detected that the first main circulation pump has a fault, determining the fault type;

[0078] Step S402, if the fault type is that the current main circulation pump control circuit breaker is tripped, drive the soft starter to perform soft start on the second main circulation pump, record the fifth start time, and control the first main circulation pump to stop operating at the power frequency;

[0079] Step S403: if the fifth start-up time is greater than or equal to the first preset time, the first main circulation pump is controlled to switch to industrial frequency operation, and after the first main circulation pump continues to run for a second preset time, the soft starter is controlled to stop running.

[0080] In step S401 of some embodiments, the PLC program detects that the main circulation pump of the system has an alarm message of low main circulation pump outlet water pressure and low main circulation pump inlet valve pressure, and executes the main circulation pump switching logic to switch the currently running main circulation pump to a standby main circulation pump to keep the valve cooling system running; and the PLC program detects that the switched main circulation pump has also failed, and the PLC program determines the fault type of the fault to determine whether to execute the main circulation pump switching logic; in the valve cooling system of this embodiment, when the system has an alarm message of low main circulation pump outlet water pressure and low main circulation pump inlet valve pressure, on-site confirmation is required before the alarm message disappears; if the alarm message is not confirmed, the system will no longer determine that the system pressure is low and execute the main circulation pump switching logic.

[0081] In step S402 of some embodiments, if the fault of the main circulation pump after switching is the tripping of the main circulation pump circuit breaker, in the PLC program, the alarm level of the main circulation pump circuit breaker tripping fault is higher than the system pressure low fault, and the main circulation pump circuit breaker tripping will cause the power circuit of the corresponding main circulation pump to lose power, and the corresponding main pump will stop running immediately. The PLC needs to execute the main circulation pump re-cut logic to make the main circulation pump with low pressure run to ensure the operation of the water cooling system. In this embodiment, the PLC program detects that the main circulation pump after switching has a main circulation pump circuit breaker tripping fault, drives the soft starter to control the main circulation pump before switching to soft start, delays for a period of time, and controls the main circulation pump after switching to stop running.

[0082] In step S403 of some embodiments, the soft starter controls the original main circulation pump to soft start and delays for a certain period of time, and then sends out an industrial frequency operation contact, so that the original main circulation pump switches to industrial frequency operation; the soft starter exits operation after a delay of a period of time after the original main circulation pump switches to industrial frequency operation; in this embodiment, the soft starter controls the original main circulation pump to soft start and delays for 3 seconds, and the original main circulation pump exits operation after a delay of 5 seconds after switching to industrial frequency operation.

[0083] See also Figure 5 In some embodiments, step S105 may include but is not limited to steps S501 to S503:

[0084] Step S501, matching the fault type with the preset fault table, if the fault type is the first type, generating the first alarm information, driving the soft starter to perform soft start on the second main circulation pump, recording the third start time, and controlling the first main circulation pump to stop the power frequency operation; wherein the first fault type includes one or more of the current main circulation pump outlet water pressure is low, the current main circulation pump inlet valve pressure is low, the current main circulation pump fault, the current main circulation pump overheating, the current main circulation pump control circuit breaker tripping or the station power supply power failure fault;

[0085] Step S502, if the third start-up time is greater than or equal to the first preset time, control the second main circulation pump to switch to industrial frequency operation, and record the third operation time;

[0086] Step S503: if the third running time is greater than or equal to the second preset time, control the soft starter to stop running.

[0087] In step S501 of some embodiments, after the PLC program detects that a system failure occurs, an alarm message is issued according to the following preset table:

[0088] Table 1

[0089]

[0090] Table 1 continued

[0091]

[0092] Among them, the fault message and fault description are the alarm information content sent by the valve cooling system to the remote control center, as well as the information content displayed on the valve cooling system display screen; the alarm delay is the system generating an alarm message after a corresponding delay after detecting the corresponding fault, reducing false alarms caused by the switching of the main circulation pump, etc., reducing the alarm of frequent switching of the system's main circulation pump, and improving the stability of system operation; after detecting a system fault, the PLC program matches the detected fault with the fault table in the above table to determine the fault type of the fault; if the system fault meets the preset first type, the PLC program determines that the currently running first main circulation pump has a fault, which may affect the normal operation of the valve cooling system, and the currently running main circulation pump needs to be switched.

[0093] In step S502 of some embodiments, the PLC program generates an alarm message based on the matching result, and sends the generated alarm message to the operating personnel to inspect and maintain the valve cooling system. At the same time, the PLC program controls the soft starter to drive the second main circulation pump currently serving as a backup to perform a soft start to replace the first main circulation pump that has failed. When the PLC program drives the second main circulation pump to start running, it controls the first main circulation pump to stop running; after a period of time after the soft starter controls the second main circulation pump to enter the soft start state, such as 5 seconds, it sends out an industrial frequency operation contact to drive the second main circulation pump to switch to industrial frequency operation.

[0094] In step S503 of some embodiments, after the soft starter detects that the currently running second main circulation pump switches to industrial frequency operation, it exits operation after a delay of a period of time, such as 5 seconds, to achieve smooth switching of the second main circulation pump between soft start and industrial frequency operation.

[0095] The following is a detailed description and explanation of the solution of the embodiment of the present invention in conjunction with a specific application example:

[0096] See also Figure 6 , the PLC program drives the soft starter to control the soft start of the first main circulation pump. After controlling the soft start of the first main circulation pump, the soft starter delays for 3 seconds and sends out the power frequency operation contact. The power frequency operation contactor of the first main circulation pump is closed, and the first main circulation pump is switched to power frequency operation. After the first main circulation pump is switched to power frequency operation, the soft starter exits the operation after a delay of 5 seconds. The first main circulation pump operates normally, so that the valve cooling system operates to provide heat dissipation; when the first main circulation pump is running, the PLC program monitors the operating status of the first main circulation pump, determines whether there is a fault, and starts the timer to record the first main The running time of the circulation pump is compared with the recorded running time; the outlet pump connected to the first main circulation pump fails, causing the outlet water pressure of the first main circulation pump to be lower than the set protection value. The PLC program detects that the first main circulation pump fails. By matching the detected fault with the preset fault table, it is determined that the fault of the first main circulation pump is low outlet water pressure, and an alarm message is generated and sent to the remote control center to remind the operation and maintenance personnel to handle it; the PLC program also prompts the alarm message "Low outlet water pressure, please confirm on the spot" on the display screen of the valve cooling system; after determining that the first main circulation pump has failed, the PLC drives the soft starter to control the second main circulation pump currently used as a backup to soft start, and at the same time, controls the first main circulation pump with a fault to exit operation; after the soft starter controls the second main circulation pump to soft start, it delays 3 seconds to send the second main circulation pump power frequency operation contact, and the second main circulation pump switches to power frequency operation, replacing the first main circulation pump as the current main circulation pump to ensure the normal operation of the valve cooling system; when the operation and maintenance personnel do not confirm the alarm message prompted by the valve cooling system, the PLC program monitors the running second main circulation pump in real time, It was detected that the second main circulation pump had a fault; the PLC program determined through matching that the fault of the second main circulation pump was a circuit breaker tripping fault; since the priority of the circuit breaker tripping fault was higher than the low water outlet pressure fault, the PLC program executed the main circulation pump switchback logic, drove the soft starter to re-control the first main circulation pump for soft start, and switched to industrial frequency operation after a certain delay; at the same time, the second main circulation pump with a circuit breaker tripping fault was controlled to stop running, and the first main circulation pump with low water outlet pressure maintained the operation of the valve cooling system, avoiding the valve cooling system from shutting down and improving the stability of the valve cooling system operation.

[0097] The implementation of the embodiment of the present invention includes the following beneficial effects: the embodiment provides a control method, system, electronic device and storage medium for the main circulation pump of a valve cooling system. The scheme drives the soft starter to perform soft start on the first main circulation pump by responding to the automatic start command, and records the first start time; if the first start time is greater than or equal to the first preset time, the first main circulation pump is controlled to switch to power frequency operation, and after the first main circulation pump runs for the second preset time, the soft starter is controlled to stop running; the second running time of the first main circulation pump is recorded, and if the second running time is greater than or equal to the third preset time, the first main circulation pump is automatically switched; at the same time, fault monitoring is performed when the first main circulation pump is running, and if the first main circulation pump fails, the first main circulation pump is switched according to the fault type of the fault. By setting two main circulation pumps, monitoring the running time of the main circulation pump and whether a fault occurs, switching the main circulation pump to run when the running time of the main circulation pump meets the threshold or the main circulation pump fails, and setting the soft start before switching to power frequency operation to improve the smoothness of the main circulation pump switching and improve the stability of the valve cooling system operation.

[0098] See also Figure 7 The embodiment of the present invention further provides a valve cooling system main circulation pump control system, comprising:

[0099] The first module is used for driving the soft starter to perform soft start on the first main circulation pump in response to the automatic start command, and recording the first start time;

[0100] The second module is used for controlling the first main circulation pump to switch to power frequency operation and recording the first operation time if the first start-up time is greater than or equal to the first preset time; wherein the first operation time represents the operation time of the soft starter after the first main circulation pump switches to power frequency operation;

[0101] A third module is used to control the soft starter to stop running if the first running time is greater than or equal to a second preset time;

[0102] The fourth module is used to record the second running time of the first main circulation pump, and compare the second running time with the third preset time; if the running time is greater than or equal to the third preset time, automatically switch the circulation pump operation for the first main circulation pump; wherein the second running time represents the running time of the first main circulation pump switching to power frequency operation;

[0103] The fifth module is used to perform fault monitoring on the first main circulation pump, and if a fault is detected in the first main circulation pump, determine the fault type, and perform fault switching on the first main circulation pump according to the fault type.

[0104] It can be seen that the contents of the above method embodiments are all applicable to the present system embodiments, the functions specifically implemented by the present system embodiments are the same as those of the above method embodiments, and the beneficial effects achieved are also the same as those achieved by the above method embodiments.

[0105] The embodiment of the present application also provides an electronic device, the electronic device includes a memory and a processor, the memory stores a computer program, and the processor implements the above-mentioned valve cooling system main circulation pump control method when executing the computer program. The electronic device can be any intelligent terminal including a tablet computer, a car computer, etc.

[0106] It can be understood that the contents of the above method embodiments are all applicable to the present device embodiments, the functions specifically implemented by the present device embodiments are the same as those of the above method embodiments, and the beneficial effects achieved are also the same as those achieved by the above method embodiments.

[0107] See also Figure 8 , Figure 8 The hardware structure of an electronic device of another embodiment is illustrated, and the electronic device includes:

[0108] The processor 801 may be implemented by a general-purpose CPU (Central Processing Unit), a microprocessor, an application-specific integrated circuit (Application Specific Integrated Circuit, ASIC), or one or more integrated circuits, and is used to execute relevant programs to implement the technical solutions provided in the embodiments of the present application;

[0109] The memory 802 can be implemented in the form of a read-only memory (ROM), a static storage device, a dynamic storage device, or a random access memory (RAM). The memory 802 can store an operating system and other application programs. When the technical solution provided in the embodiment of this specification is implemented by software or firmware, the relevant program code is stored in the memory 802, and the processor 801 calls and executes a valve cooling system main circulation pump control method of the embodiment of this application;

[0110] Input / output interface 803, used to implement information input and output;

[0111] The communication interface 804 is used to realize the communication interaction between the device and other devices. The communication can be realized through a wired manner (such as USB, network cable, etc.) or a wireless manner (such as mobile network, WIFI, Bluetooth, etc.);

[0112] A bus 805 that transmits information between the various components of the device (e.g., the processor 801, the memory 802, the input / output interface 803, and the communication interface 804);

[0113] The processor 801 , the memory 802 , the input / output interface 803 and the communication interface 804 are connected to each other in communication within the device via a bus 805 .

[0114] An embodiment of the present application further provides a computer-readable storage medium, which stores a computer program. When the computer program is executed by a processor, the above-mentioned valve cooling system main circulation pump control method is implemented.

[0115] It can be understood that the contents of the above method embodiments are all applicable to the present storage medium embodiments, the functions specifically implemented by the present storage medium embodiments are the same as those of the above method embodiments, and the beneficial effects achieved are also the same as those achieved by the above method embodiments.

[0116] Among them, the memory, as a non-transient computer-readable storage medium, can be used to store non-transient software programs and non-transient computer executable programs. The memory may include a high-speed random access memory, and may also include a non-transient memory, such as at least one disk storage device, a flash memory device, or other non-transient solid-state storage device. In some embodiments, the memory may optionally include a remote memory remotely arranged relative to the processor, and these remote memories may be connected to the processor via a network. Examples of the above-mentioned network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0117] It is understood that all or some steps and systems in the disclosed method above can be implemented as software, firmware, hardware and appropriate combinations thereof. Some physical components or all physical components can be implemented as software executed by a processor, such as a central processing unit, a digital signal processor or a microprocessor, or implemented as hardware, or implemented as an integrated circuit, such as an application-specific integrated circuit. Such software can be distributed on a computer-readable medium, and the computer-readable medium can include a computer storage medium (or a non-transitory medium) and a communication medium (or a temporary medium). As known to those of ordinary skill in the art, the term computer storage medium includes volatile and non-volatile, removable and non-removable media implemented in any method or technology for storing information (such as computer-readable instructions, data structures, program modules or other data). Computer storage media include, but are not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, digital versatile disk (DVD) or other optical disk storage, magnetic cassette, magnetic tape, disk storage or other magnetic storage device, or any other medium that can be used to store desired information and can be accessed by a computer. Furthermore, it is well known to those skilled in the art that communication media typically embodies computer readable instructions, data structures, program modules, or other data in a modulated data signal such as a carrier wave or other transport mechanism, and may include any information delivery media.

[0118] The above is a specific description of the preferred implementation of the present invention, but the invention is not limited to the embodiments. Those skilled in the art may make various equivalent modifications or substitutions without violating the spirit of the present invention. These equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A valve cooling system main circulation pump control method, characterized in that: The method comprises: In response to the automatic start command, driving the soft starter to perform soft start on the first main circulation pump and recording the first start time; If the first startup time is greater than or equal to the first preset time, the first main circulation pump is controlled to switch to power frequency operation, and the first operation time is recorded; wherein the first operation time represents the operation time of the soft starter after the first main circulation pump is switched to power frequency operation; If the first running time is greater than or equal to a second preset time, controlling the soft starter to stop running; Record the second running time of the first main circulation pump, and compare the second running time with a third preset time; if the running time is greater than or equal to the third preset time, automatically switch the circulation pump operation for the first main circulation pump; wherein the second running time represents the running time of the first main circulation pump switching to power frequency operation; The first main circulation pump is monitored for faults. If a fault is detected in the first main circulation pump, the fault type is determined, and fault switching is performed on the first main circulation pump according to the fault type.

2. The method according to claim 1, characterized in that The automatically switching the circulating pump operation on the first main circulating pump specifically includes: driving the soft starter to perform soft start on the second main circulation pump, recording the second start time, and controlling the first main circulation pump to stop operating at the power frequency; If the second start-up time is greater than or equal to the first preset time, control the second main circulation pump to switch to industrial frequency operation, and record the third operation time; If the third running time is greater than or equal to the second preset time, the soft starter is controlled to stop running.

3. The method according to claim 2, characterized in that The method further comprises: If the second main circulation pump fails to start, controlling the first main circulation pump to stop operating at the power frequency; Delaying for a third preset time, performing fault detection on the second main circulation pump, and if it is detected that the second main circulation pump has a fault, determining the fault type of the fault; If the fault type is that the current main circulation pump outlet water pressure is low and the current main circulation pump inlet valve pressure is low, a first alarm message is generated, and the soft starter is driven to perform a soft start on the first main circulation pump, and a fourth start time is recorded; If the fourth starting time is greater than or equal to the first preset time, the first main circulation pump is controlled to switch to industrial frequency operation, and after the first main circulation pump continues to run for the second preset time, the soft starter is controlled to stop running.

4. The method according to claim 3, characterized in that The method further comprises: Performing fault detection on the first main circulation pump, and if it is detected that the first main circulation pump has a fault, determining the fault type of the fault; If the fault type is that the current main circulation pump control circuit breaker is tripped, the soft starter is driven to perform a soft start on the second main circulation pump, the fifth start time is recorded, and the first main circulation pump is controlled to stop operating at the power frequency; If the fifth starting time is greater than or equal to the first preset time, the first main circulation pump is controlled to switch to industrial frequency operation, and after the first main circulation pump continues to run for the second preset time, the soft starter is controlled to stop running.

5. The method according to claim 1, characterized in that The performing fault switching on the first main circulation pump according to the fault type specifically includes: Match the fault type with the preset fault table. If the fault type is the first type, generate the first alarm information, drive the soft starter to perform soft start on the second main circulation pump, record the third start time, and control the first main circulation pump to stop the power frequency operation; wherein, the first fault type includes one or more of the current main circulation pump outlet water pressure is low, the current main circulation pump inlet valve pressure is low, the current main circulation pump fault, the current main circulation pump overheating, the current main circulation pump control circuit breaker tripping or the station power supply power failure fault; If the third start-up time is greater than or equal to the first preset time, control the second main circulation pump to switch to industrial frequency operation, and record the third operation time; If the third running time is greater than or equal to the second preset time, the soft starter is controlled to stop running.

6. The method according to claim 1, characterized in that The method further comprises: If the fault type is the second type, the second operating time is reset; wherein the second type includes any one of a first main circulation pump soft start circuit fault, a second main circulation pump soft start circuit fault, a first main circulation pump power frequency fault, a second main circulation pump power frequency fault, a first main circulation pump safety switch not closed, a second main circulation pump safety switch not closed, a first AC power supply fault, a second AC power supply fault, or a current main circulation pump low water outlet pressure, and a current main circulation pump low inlet valve pressure.

7. The method according to claim 1, characterized in that The method further comprises: If the fault type is a main circulation pump power frequency fault or the main circulation pump safety switch is not closed, the current operating state of the main circulation pump is maintained; wherein, the main circulation pump power frequency fault includes a first main circulation pump soft start circuit fault and a second main circulation pump soft start circuit fault, the main circulation pump safety switch not closed includes a first main circulation pump safety switch not closed and a second main circulation pump safety switch not closed, and the main circulation pump includes the first main circulation pump and the second main circulation pump.

8. A valve cooling system main circulation pump control system, characterized in that: include: The first module is used for driving the soft starter to perform soft start on the first main circulation pump in response to the automatic start command, and recording the first start time; The second module is used for controlling the first main circulation pump to switch to power frequency operation and recording the first operation time if the first start-up time is greater than or equal to the first preset time; wherein the first operation time represents the operation time of the soft starter after the first main circulation pump switches to power frequency operation; A third module is used to control the soft starter to stop running if the first running time is greater than or equal to a second preset time; The fourth module is used to record the second running time of the first main circulation pump, and compare the second running time with the third preset time; if the running time is greater than or equal to the third preset time, automatically switch the circulation pump operation for the first main circulation pump; wherein the second running time represents the running time of the first main circulation pump switching to power frequency operation; The fifth module is used to perform fault monitoring on the first main circulation pump, and if a fault is detected in the first main circulation pump, determine the fault type, and perform fault switching on the first main circulation pump according to the fault type.

9. An electronic device, characterized in that: include: at least one processor; at least one memory for storing at least one program; When the at least one program is executed by the at least one processor, the at least one processor implements the method according to any one of claims 1 to 7.

10. A computer-readable storage medium storing a program executable by a processor, characterized in that: The processor-executable program is used to perform the method according to any one of claims 1 to 7 when executed by the processor.

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