CN116044724A - Control method, device, medium and equipment of circulating water pump - Google Patents
Control method, device, medium and equipment of circulating water pump Download PDFInfo
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- CN116044724A CN116044724A CN202310108474.7A CN202310108474A CN116044724A CN 116044724 A CN116044724 A CN 116044724A CN 202310108474 A CN202310108474 A CN 202310108474A CN 116044724 A CN116044724 A CN 116044724A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 305
- 238000000034 method Methods 0.000 title claims abstract description 41
- 238000001816 cooling Methods 0.000 claims abstract description 81
- 238000011084 recovery Methods 0.000 claims abstract description 23
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- KLDZYURQCUYZBL-UHFFFAOYSA-N 2-[3-[(2-hydroxyphenyl)methylideneamino]propyliminomethyl]phenol Chemical compound OC1=CC=CC=C1C=NCCCN=CC1=CC=CC=C1O KLDZYURQCUYZBL-UHFFFAOYSA-N 0.000 description 1
- 241000242583 Scyphozoa Species 0.000 description 1
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- 238000002485 combustion reaction Methods 0.000 description 1
- 201000001098 delayed sleep phase syndrome Diseases 0.000 description 1
- 208000033921 delayed sleep phase type circadian rhythm sleep disease Diseases 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/007—Installations or systems with two or more pumps or pump cylinders, wherein the flow-path through the stages can be changed, e.g. from series to parallel
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/06—Control using electricity
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Abstract
The disclosure relates to a control method, a control device, a control medium and control equipment of a circulating water pump. The method comprises the following steps: acquiring state parameters in a condenser circulating cooling system; judging whether a fault exists in the condenser circulating cooling system according to the acquired state parameters; if the condenser circulating cooling system is judged to have faults, the opening and closing of a plurality of circulating water pumps in the condenser circulating cooling system are controlled according to a preset self-recovery strategy. Therefore, the recovery of faults can be automatically carried out by opening and closing the circulating water pumps, the burden of operators is lightened, and the operation safety of the circulating cooling system of the condenser is enhanced.
Description
Technical Field
The disclosure relates to the field of power plant circulating systems, and in particular relates to a control method, a device, a medium and equipment of a circulating water pump.
Background
Furnace, machine and electricity are the main equipment in thermal power plants, and are also called as three systems. In the boiler, chemical energy of the fuel is converted into thermal energy of steam; in the turbine, the thermal energy of the steam is converted into mechanical energy for the rotation of the wheels; in the generator the mechanical energy is converted into electrical energy. The equipment which works in cooperation with the three systems becomes auxiliary equipment or auxiliary machines. The pipes, lines, etc. connecting the host and the auxiliary are called a system. The main systems of the thermal power plant comprise a combustion system, a steam-water system, an electric system and the like.
The steam-water system comprises a condenser circulating cooling system, and the condenser circulating cooling system generally comprises a plurality of circulating water pumps for circulating water in a pipeline outside the condenser. In the related art, the equipment needs to be manually started and stopped according to specific conditions, so that the burden of operators is heavy, and the safety of system operation is poor.
Disclosure of Invention
The purpose of the present disclosure is to provide a control method, a device, a medium and equipment for a circulating water pump with high efficiency and safety.
In order to achieve the above object, the present disclosure provides a control method of a circulating water pump, the method comprising:
acquiring state parameters in a condenser circulating cooling system;
judging whether a fault exists in the condenser circulating cooling system according to the acquired state parameters;
if the condenser circulating cooling system is judged to have faults, the opening and closing of a plurality of circulating water pumps in the condenser circulating cooling system are controlled according to a preset self-recovery strategy.
Optionally, the state parameters comprise the vacuum degree in the condenser and the water pressure in the circulating water pipe;
judging whether the condenser circulating cooling system has faults according to the acquired state parameters comprises the following steps: and if the vacuum degree in the condenser is lower than a preset vacuum degree threshold value or the water pressure in the circulating water pipe is lower than a preset pressure threshold value, judging that a fault exists in the circulating cooling system of the condenser.
Optionally, the controlling the opening and closing of the plurality of circulating water pumps in the condenser circulating cooling system according to the predetermined self-recovery strategy includes: and if the vacuum degree in the condenser is lower than a preset vacuum degree threshold value, or the water pressure in the circulating water pipe is lower than a preset pressure threshold value, controlling to increase the running number of circulating water pumps in the condenser circulating cooling system.
Optionally, the method further comprises:
and if the condenser circulating cooling system is judged to have no fault, controlling the opening and closing of a plurality of circulating water pumps in the condenser circulating cooling system according to a preset switching strategy.
Optionally, the predetermined switching strategy includes:
and switching the current running circulating water pump according to the priority order of the preset circulating water pump every preset time.
Optionally, the predetermined priority order of the circulating water pump includes:
the longer the standby time length is, the higher the starting priority of the circulating water pump is;
the longer the operation time length is, the higher the shutdown priority is for the circulating water pump;
starting the circulating water pumps with the same standby time length according to a first default priority;
and for the circulating water pumps with the same operation duration, stopping operation according to the second default priority.
Optionally, the predetermined handover policy further includes: the start and stop of any two circulating water pumps have a preset interval duration.
The present disclosure also provides a control device of a circulating water pump, the device comprising:
the acquisition module is used for acquiring state parameters in the condenser circulating cooling system;
the judging module is used for judging whether the condenser circulating cooling system has faults or not according to the acquired state parameters;
and the first control module is used for controlling the opening and closing of a plurality of circulating water pumps in the condenser circulating cooling system according to a preset self-recovery strategy if the condenser circulating cooling system is judged to have faults.
The present disclosure also provides a non-transitory computer readable storage medium having stored thereon a computer program which, when executed by a processor, implements the steps of the above-described method provided by the present disclosure.
The present disclosure also provides an electronic device, including:
a memory having a computer program stored thereon;
a processor for executing the computer program in the memory to implement the steps of the above method provided by the present disclosure.
According to the technical scheme, when the condenser circulating cooling system is judged to have faults according to the state parameters in the condenser circulating cooling system, the opening and closing of the circulating water pumps in the condenser circulating cooling system are controlled according to the preset self-recovery strategy. Therefore, the recovery of faults can be automatically carried out by opening and closing the circulating water pumps, the burden of operators is lightened, and the operation safety of the circulating cooling system of the condenser is enhanced.
Additional features and advantages of the present disclosure will be set forth in the detailed description which follows.
Drawings
The accompanying drawings are included to provide a further understanding of the disclosure, and are incorporated in and constitute a part of this specification, illustrate the disclosure and together with the description serve to explain, but do not limit the disclosure. In the drawings:
fig. 1 is a flowchart of a control method of a circulating water pump according to an exemplary embodiment.
Fig. 2 is a man-machine interaction interface diagram of a control method of a circulating water pump according to an exemplary embodiment.
Fig. 3 is a block diagram of a control apparatus of a circulating water pump according to an exemplary embodiment.
Fig. 4 is a block diagram of an electronic device, as shown in an exemplary embodiment.
Detailed Description
Specific embodiments of the present disclosure are described in detail below with reference to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating and illustrating the disclosure, are not intended to limit the disclosure.
It should be noted that, all actions for acquiring signals, information or data in the present disclosure are performed under the condition of conforming to the corresponding data protection rule policy of the country of the location and obtaining the authorization given by the owner of the corresponding device.
Fig. 1 is a flowchart of a control method of a circulating water pump according to an exemplary embodiment. As shown in fig. 1, the method includes the following steps.
In step S101, a state parameter in a condenser circulation cooling system is acquired.
In step S102, it is determined whether there is a fault in the condenser circulating cooling system according to the acquired state parameter.
In step S103, if it is determined that there is a fault in the condenser circulating cooling system, the on/off of the plurality of circulating water pumps in the condenser circulating cooling system is controlled according to a predetermined self-recovery strategy.
In a condenser circulation cooling system of a power plant, the condenser circulation cooling system generally comprises a plurality of circulating water pumps, and the plurality of circulating water pumps can be mutually standby and can also simultaneously operate to increase the water flow speed in a circulating water pipe. For the arrangement of the pipe structures of the plurality of circulating water pumps, the arrangement in the related art may be adopted, which is well known to those skilled in the art, and will not be described herein.
The state parameters in the condenser circulating cooling system represent the running states of various devices in the condenser circulating cooling system, and can comprise the power of a circulating water pump, the temperature of a bearing, the water level of a front pool and the like. When the condenser circulating cooling system normally operates without faults, the state parameters of the condenser circulating cooling system are in the respective corresponding normal ranges, and if the state parameters exceed the normal ranges, the condenser circulating cooling system can be considered to have faults.
In a preset self-recovery strategy, a corresponding control mode of opening and closing the circulating water pump can be set according to the fault type so as to pertinently perform self-recovery on the fault. For example, when the air pressure in the condenser is higher than a preset highest pressure threshold, the air in the condenser is excessively increased; when the water pressure in the circulating water pipe is less than the predetermined minimum pressure threshold, it is indicated that the water pressure in the circulating water pipe is too low. At this time, the standby circulating water pump can be controlled to be started for fault self-recovery. For another example, when the air pressure in the condenser is lower than a preset lowest pressure threshold, and the water pressure in the circulating water pipe is higher than a preset highest pressure threshold, the circulating water pump can be controlled to be stopped, so that the waste of energy sources is avoided.
In an embodiment, the number of the circulating water pumps required can be determined according to the state parameters in the condenser circulating cooling system, and the number of the circulating water pumps currently running can be determined according to the feedback signals. If the number of the circulating water pumps currently running is smaller than the number of the required circulating water pumps, the circulating water pumps can be controlled to be additionally started until the number of the required circulating water pumps is reached; if the number of the circulating water pumps currently running is larger than the number of the required circulating water pumps, the starting of the circulating water pumps can be controlled to be reduced again until the number of the required circulating water pumps is reached.
According to the technical scheme, when the condenser circulating cooling system is judged to have faults according to the state parameters in the condenser circulating cooling system, the opening and closing of the circulating water pumps in the condenser circulating cooling system are controlled according to the preset self-recovery strategy. Therefore, the recovery of faults can be automatically carried out by opening and closing the circulating water pumps, the burden of operators is lightened, and the operation safety of the circulating cooling system of the condenser is enhanced.
In yet another embodiment, the status parameters include vacuum level inside the condenser and water pressure inside the circulating water pipe.
Judging whether a fault exists in the condenser circulating cooling system according to the acquired state parameters, comprising: if the vacuum degree in the condenser is lower than a preset vacuum degree threshold value or the water pressure in the circulating water pipe is lower than a preset pressure threshold value, judging that a fault exists in the circulating cooling system of the condenser.
If the vacuum degree in the condenser is lower than the preset vacuum degree threshold value, the condenser can be considered to have excessive air in the condenser, and the normal operation of the condenser is not facilitated. If the water pressure in the circulating water pipe is smaller than the preset pressure threshold value, the water pressure in the circulating water pipe can be considered to be too small, and the circulating cooling of the condenser is not facilitated. Both of these conditions can be considered to be a fault in the condenser recirculating cooling system.
In the embodiment, faults in the condenser circulating cooling system are judged by detecting the vacuum degree in the condenser and the water pressure in the circulating water pipe, and the faults are self-recovered according to a preset self-recovery strategy, so that the operation safety of the condenser circulating cooling system is enhanced.
In yet another embodiment, controlling the on and off of a plurality of circulating water pumps in a condenser circulating cooling system according to a predetermined self-recovery strategy includes: and if the vacuum degree in the condenser is lower than a preset vacuum degree threshold value or the water pressure in the circulating water pipe is lower than a preset pressure threshold value, controlling to increase the running number of circulating water pumps in the circulating cooling system of the condenser.
In this embodiment, in the case of the above-mentioned failure, the predetermined self-recovery strategy is to control the increase of the number of circulating water pumps in the condenser circulating cooling system, that is, the standby circulating water pump may be started.
And the standby circulating water pumps can be started specifically and can also be arranged in a self-recovery strategy. For example, a predetermined priority may be set to all the circulating water pumps, and the highest priority is selected to be turned on among the circulating water pumps that are not currently operated (standby). Alternatively, the priority of the circulating water pump may be changed in real time. For example, the priority of the current standby circulating water pump may be determined according to the standby time period of the circulating water pump. The standby period of the circulating water pump may be a period of time counted from the start of the shutdown of the circulating water pump. The longer the standby time of the circulating water pump is, the higher the priority of starting the circulating water pump is. Therefore, all the circulating water pumps can be turned on to run alternately, on one hand, whether the circulating water pumps have faults or not can be timely detected by turning on the circulating water pumps, and on the other hand, the situation that the circulating water pumps are not smooth in running due to long-term non-running is avoided.
If the circulating water pump includes a high-speed pump and a low-speed pump, the high-speed pump may be preferentially turned on under the condition that the water pressure in the circulating water pipe is less than a predetermined pressure threshold. Therefore, fewer pumps can be started to meet the requirement of water pressure, and energy conservation is facilitated.
In yet another embodiment, the method further comprises: if no fault exists in the condenser circulating cooling system, the on and off of a plurality of circulating water pumps in the condenser circulating cooling system are controlled according to a preset switching strategy.
That is, even if there is no fault, the plurality of circulating water pumps in the condenser circulating cooling system are controlled to perform switching operation according to a predetermined switching strategy. In the related art, the circulating water pump needs to be manually switched, and in the scheme, the circulating water pump can be automatically switched according to a switching strategy. On the one hand, the circulating water pump is started to timely detect whether the circulating water pump has faults, and on the other hand, the situation that the circulating water pump is not smooth in operation due to long-term non-operation is avoided.
The duration and the priority order of the intervals of the handover may be specifically set, that is, the predetermined handover policy may include: and switching the current running circulating water pump according to the priority order of the preset circulating water pump every preset time.
The predetermined time length can be set according to specific model characteristics of a plurality of circulating water pumps in the condenser circulating cooling system. For example, it may be 5 days. The priority order can be fixed priority order adopted by all circulating water pumps, or can be priority order determined according to real-time state.
The predetermined priority order of the circulating water pump may include:
the longer the standby time length is, the higher the starting priority of the circulating water pump is;
the longer the operation time length is, the higher the shutdown priority is for the circulating water pump;
starting the circulating water pumps with the same standby time length according to a first default priority;
and for the circulating water pumps with the same operation duration, stopping operation according to the second default priority.
The standby time length refers to the time length of the circulating water pump which is in the current state and stops running from the last time. The running time length refers to the duration time of the circulating water pump in the current running state from the starting of the current running state. According to the priority order, the circulating water pump with longer standby time is started preferentially, and the circulating water pump with longer running time is stopped preferentially. Therefore, the opportunities of starting and stopping are distributed to each circulating water pump more evenly, and each circulating water pump can be subjected to periodic fault detection and maintenance, so that faults can be found timely.
Any two of the following conditions are met, and the circulating water pump can be judged to be in an operating state: the operation signal of the circulating water pump exists; the shutdown signal of the circulating water pump does not exist; the current of the circulating water pump is greater than a predetermined current threshold. When two conditions are satisfied and the other condition is not satisfied, an alarm message may be output.
Any two of the following conditions are met, and the circulating water pump can be judged to be in a shutdown state: the shutdown signal of the circulating water pump exists; the operation signal of the circulating water pump does not exist; the current of the circulating water pump is smaller than a predetermined current threshold. When two conditions are satisfied and the other condition is not satisfied, an alarm message may be output.
And (3) performing the logic judgment on the running or shutdown state of the circulating water pump outside the controller, and accessing the running or shutdown input pin of the controller after determining the state of the circulating water pump.
The predetermined handover strategy further comprises: the start and stop of any two circulating water pumps have a preset interval duration. That is, there is a predetermined interval period between the start-up of two circulating water pumps, a predetermined interval period between the shut-down of two circulating water pumps, and a predetermined interval period between the start-up of one circulating water pump and the shut-down of the other circulating water pump. The interval duration may be set to 5min, which is hereinafter denoted as Pd. Therefore, the impact on the system caused by the fact that two circulating water pumps change states at the same time can be reduced, and the stability of the system is good.
For example, the condenser circulating cooling system comprises two large circulating water pumps and two small circulating water pumps. The two small circulating water pumps can be regulated to be high-speed and low-speed. In the following, the numbers of the two large circulating water pumps are the number 1 and the number 2, the numbers of the high-speed states of the two small circulating water pumps are the number 3 and the number 4, the serial numbers of the low-speed states of the two small circulating water pumps are No. 5 and No. 6 circulating water pumps.
Fig. 2 is a man-machine interaction interface diagram of a control method of a circulating water pump according to an exemplary embodiment. As shown in FIG. 2, in the intelligent control interactive interface of the circulating water pump, the control mode selection is divided into automatic and cutting, and when the automatic control mode is put into the automatic control mode, all the circulating water pumps connected with the controller operate according to the setting. When the water pump is put into 'cutting off', all circulating water pumps connected with the controller stop running. Under the control mode selection, the equipment running number and the equipment requirement number can be checked, and when the equipment running number is smaller than the equipment requirement number, the circulating water pump meeting the starting condition is controlled to be automatically started; and when the number of the equipment running is larger than the number of the equipment required, the equipment is automatically stopped.
The right side of the interface is divided into a periodic automatic and a priority automatic, and an input block below the periodic automatic block can set periodic switching time, and after each device reaches standby regulated time, the device switching is automatically carried out. This prescribed time is referred to as a switching time, i.e., a device periodic switching period, hereinafter denoted by t 0; the priority of the circulating water pump can be determined according to the equipment outage time, and when the interlocking is put in, the circulating water pump participates in periodic work or interlocking according to the priority; when the circulating water pump is started or added in an interlocking way, firstly starting the circulating water pump with the highest priority, and stopping the circulating water pump with the lowest priority when stopping operation; when the interlock is withdrawn, no periodic work or interlock is engaged. An operator can change the equipment interlocking priority through 6 'level input' modules; the automatic mode permission block in the intelligent control interface has red and green mode display, the green color indicates that the equipment starting condition is satisfied, the red color indicates that the equipment starting condition is not satisfied, only when the operation is permitted, the internal operation and control of the controller can be performed, and when the operation is not permitted, the controller cannot be started.
The circulating water pump with the longest standby time is started firstly during switching, namely has the highest priority of starting. The circulating water pump with the longest operation duration is stopped firstly in the rotation process, namely, the circulating water pump has the highest priority of stopping operation. If the two circulating water pumps have the same operation time length, the operation is carried out according to the default priority of the two circulating water pumps. For example, the serial numbers of the circulating water pumps 1 to 6 are default priorities, and when the plurality of circulating water pumps have the same standby time or running time, the priority with the serial numbers being higher in front.
Because the circulating water pumps No. 3 and No. 4 have high-low speed difference, the operation is required to select an interlocking input mode according to actual requirements. 3. No. 5 belongs to two rotating speeds of the same circulating water pump, and can not be simultaneously put into interlocking; 4. no. 6 belongs to two rotating speeds of the same circulating water pump, and can not be simultaneously put into interlocking.
When the high and low speed pumps (e.g., no. 3 and No. 5) of the same circulating water pump reach the start-up or shut-down condition at the same time, the low speed pump (No. 5) is preferentially started or shut down. When the pressure of the circulating water pipe is low to cause the interlocking start, the high-speed pump (pump No. 3) is started in an interlocking mode preferentially.
1. Regarding the starting priority of the circulating water pump, the following strategy may be specifically adopted:
(1) The starting priority condition of the No. 1 circulating water pump is that: the No. 1 circulating water pump is put into an interlocking mode; the standby time of the No. 1 circulating water pump is longer than the standby time of all other pumps, or the interlocking of other circulating water pumps is not put into operation.
(2) The number 2-4 circulating water pump is similar to the number 1 circulating water pump.
(3) The starting priority condition of the No. 5 circulating water pump is that: the No. 5 circulating water pump is put into an interlocking mode; tstb5 is more than or equal to Tstb6 or No. 6 circulating water pump interlocking is not input. The Tstbi represents the standby time of the ith circulating water pump.
(4) The starting priority condition of the No. 6 circulating water pump is that: the No. 6 circulating water pump is put into interlocking; tstb6> Tstb5 or No. 5 circulating water pump interlock is not put into.
2. Regarding the automatic starting condition of the circulating water pump, the following strategy can be adopted:
if the starting process fails, an alarm message is output, and a worker can manually withdraw from the interlocking of the circulating water pump and withdraw from the priority level of the circulating water pump. When the high-speed pump and the low-speed pump reach the conditions simultaneously, the low-speed pump is started preferentially.
(1) Condition one of automatic starting of high-speed pump: the following condition phases (taking a circulating water pump No. 1 as an example): pd is satisfied; the static permission starting condition of the No. 1 circulating water pump is met (for example, the method comprises the steps that the water level of a forehearth is greater than a water level threshold value, and the temperature of a bearing is less than a temperature threshold value); the starting priority condition of the No. 1 circulating water pump is met; the actual running number is less than the set running number N.
(2) Condition two of automatic starting of the high-speed pump: the following condition phases (taking a circulating water pump No. 1 as an example): pd is satisfied; the static permission starting condition of the No. 1 circulating water pump is met; the starting priority condition of the No. 1 circulating water pump is met; actual number of operations = set number of operations N; n <4 (total 4); tstb1 is more than or equal to t0, and the No. 1 circulating water pump is put into interlocking; no pump No. 5 starting condition is met, and the time delay is 3 seconds; no. 6 pump start condition is satisfied, and the time delay is 3 seconds.
(3) Condition three of automatic starting of high-speed pump: the following condition phases (taking a circulating water pump No. 1 as an example): the high-speed circulating water pump shutdown fault interlocking starting condition is met; the static permission starting condition of the No. 1 circulating water pump is met; the starting priority condition of the No. 1 circulating water pump is met; the actual running number is less than or equal to the set running number N.
(4) Condition four of automatic starting of high-speed pump: the following condition phases (taking a circulating water pump No. 1 as an example): the low-speed circulating water pump is completely stopped; setting the number of running operations at a low speed to be more than 0; the static permission starting condition of the No. 1 circulating water pump is met; the starting priority condition of the No. 1 circulating water pump is met; the number of operations n=0 is set.
(5) Condition one of automatic start of low speed pump: the following condition phase (taking a circulating water pump No. 5 as an example): pd is satisfied; the static permission starting condition of the No. 5 circulating water pump is met (including whether the starting is permitted or not); the starting priority condition of the No. 5 circulating water pump is met; the actual running number is less than the set running number M.
(6) Condition two of automatic start of low-speed pump: the following condition phase (taking a circulating water pump No. 5 as an example): pd is satisfied; the static permission starting condition of the No. 5 circulating water pump is met; the starting priority condition of the No. 5 circulating water pump is met; actual number of operations = set number of operations M; m=1; tstb5 is more than or equal to t0, and the No. 5 circulating water pump is put into interlocking.
(7) Condition three of automatic start of low speed pump: the following condition phase (taking a circulating water pump No. 6 as an example): no. 5 circulating water pump failure stop operation; the static permission starting condition of the No. 6 circulating water pump is met; the starting priority condition of the No. 6 circulating water pump is met;
(8) Condition four of automatic start of low speed pump: the following condition phase (taking a circulating water pump No. 6 as an example): the high-speed circulating water pump is completely stopped; the number of the high-speed circulating water pumps is set to be more than 0; the static permission starting condition of the No. 6 circulating water pump is met; the starting priority condition of the No. 6 circulating water pump is met.
3. Regarding the shutdown priority of the circulating water pump, the following strategy can be adopted in particular:
(1) The shutdown priority condition of the No. 1 circulating water pump is that: the No. 1 circulating water pump is put into an interlocking mode; the running time length of the No. 1 circulating water pump is longer than the running time length of all other pumps or the corresponding circulating water pump is not interlocked.
(2) The shutdown priority conditions of the No. 2-4 circulating water pumps are similar to those of the No. 1 circulating water pumps.
(3) The shutdown priority condition of the No. 5 circulating water pump is the following condition phase: the No. 5 circulating water pump is put into an interlocking mode; and the trunk 5 is more than or equal to the trunk 6 or the No. 6 circulating water pump is not interlocked. Wherein, trunk represents the operation duration of the ith pump.
(4) The stop priority condition of the No. 6 circulating water pump is as follows: the No. 6 circulating water pump is put into interlocking; trunk 6> trunk 5 or No. 5 circulating water pump interlock is not put into.
4. Regarding the automatic shutdown condition of the circulating water pump, the following strategy can be adopted:
when the high speed and the low speed reach the priority condition simultaneously, the low speed pump is stopped preferentially.
(1) The automatic shutdown condition of the high-speed pump is as follows (taking a circulating water pump No. 1 as an example): pd is satisfied; a No. 1 circulating water pump shutdown priority condition; the number of circulating water pumps is greater than the number N of circulating water pumps; the circulating water pressure is normal; no 5 low-speed pump shutdown condition is met, and the time delay is 3 seconds; no shutdown condition of the No. 6 low-speed pump is met, and the time delay is 3 seconds;
(2) The automatic shutdown condition of the low-speed pump is as follows (taking a circulating water pump No. 5 as an example): pd is satisfied; a No. 5 circulating water pump shutdown priority condition; the number of circulating water pumps is greater than the number N of circulating water pumps; the circulating water pressure is normal.
5. Regarding (recirculation pipe) low pressure interlock initiation logic, the following strategy may be specifically adopted:
and after the circulating water pump is started, if the pressure is still low, the circulating water pump is not allowed to be started continuously.
The low pressure interlock is preferred for high speed pumps, and if the high speed pump is in operation, the interlock activates the low speed pump.
Taking a No. 1 circulating water pump as an example, the high-speed pump interlocking automatic starting logic is the following condition phase: pd is satisfied; the static permission starting condition of the No. 1 circulating water pump is met; the starting priority condition of the No. 1 circulating water pump is met; the pressure of the circulating jellyfish pipe is low; running high-pressure circulating pump number = set running number; running the number of low-pressure circulating water pumps = set number; with a back-up high pressure pump.
The method disclosed by the invention has the beneficial effects that:
(1) The automatic control can be started and stopped, and after the controller is started, all circulating water pumps connected with the controller automatically run according to the setting. After the controller is stopped, all the circulating water pumps controlled by the controller stop running.
(2) Only when the operation is allowed (the static permission starting condition is met), the internal operation and control of the controller can be performed, and when the operation is not allowed, the controller cannot be started, and the safe starting condition is met;
(3) The circulating water pump works in a periodical rotation mode according to the priority, the circulating water pump has the function of requiring the running number of the equipment, when the running number of the equipment is insufficient, the circulating water pump is automatically started, and when the running number of the equipment is insufficient, the circulating water pump is automatically stopped, so that the circulating water pump is convenient for a user to manage, and the monitoring effort is saved.
Based on the same inventive concept, the disclosure also provides a control device of the circulating water pump. Fig. 3 is a block diagram of a control apparatus of a circulating water pump according to an exemplary embodiment. As shown in fig. 3, the control device 300 of the circulating water pump may include an acquisition module 301, a judgment module 302, and a first control module 303.
The obtaining module 301 is configured to obtain a state parameter in a condenser circulating cooling system.
The judging module 302 is configured to judge whether there is a fault in the condenser circulating cooling system according to the acquired state parameter.
The first control module 303 is configured to control on and off of a plurality of circulating water pumps in the condenser circulating cooling system according to a predetermined self-recovery strategy if it is determined that there is a fault in the condenser circulating cooling system.
Optionally, the state parameters include a vacuum level inside the condenser and a water pressure inside the circulating water pipe.
The judging module 302 is configured to: if the vacuum degree in the condenser is lower than a preset vacuum degree threshold value or the water pressure in the circulating water pipe is lower than a preset pressure threshold value, judging that a fault exists in the circulating cooling system of the condenser.
Optionally, the first control module 303 is configured to: and if the vacuum degree in the condenser is lower than a preset vacuum degree threshold value or the water pressure in the circulating water pipe is lower than a preset pressure threshold value, controlling to increase the running number of circulating water pumps in the circulating cooling system of the condenser.
Optionally, the control device 300 of the circulating water pump may further include a second control module.
And the second control module is used for controlling the opening and closing of a plurality of circulating water pumps in the condenser circulating cooling system according to a preset switching strategy if no fault exists in the condenser circulating cooling system.
Optionally, the predetermined handover policy includes:
and switching the current running circulating water pump according to the priority order of the preset circulating water pump every preset time.
Optionally, the predetermined priority order of the circulating water pump includes:
the longer the standby time length is, the higher the starting priority of the circulating water pump is;
the longer the operation time length is, the higher the shutdown priority is for the circulating water pump;
starting the circulating water pumps with the same standby time length according to a first default priority;
and for the circulating water pumps with the same operation duration, stopping operation according to the second default priority.
Optionally, the predetermined handover policy further includes: the start and stop of any two circulating water pumps have a preset interval duration.
The specific manner in which the various modules perform the operations in the apparatus of the above embodiments have been described in detail in connection with the embodiments of the method, and will not be described in detail herein.
According to the technical scheme, when the condenser circulating cooling system is judged to have faults according to the state parameters in the condenser circulating cooling system, the opening and closing of the circulating water pumps in the condenser circulating cooling system are controlled according to the preset self-recovery strategy. Therefore, the recovery of faults can be automatically carried out by opening and closing the circulating water pumps, the burden of operators is lightened, and the operation safety of the circulating cooling system of the condenser is enhanced.
The present disclosure also provides a non-transitory computer readable storage medium having stored thereon a computer program which, when executed by a processor, implements the steps of the above-described method provided by the present disclosure.
The present disclosure also provides an electronic device comprising a memory and a processor, the memory having stored thereon a computer program; the processor is configured to execute the computer program in the memory to implement the steps of the above-described method provided by the present disclosure.
Fig. 4 is a block diagram of an electronic device 700, according to an example embodiment. As shown in fig. 4, the electronic device 700 may include: a processor 701, a memory 702. The electronic device 700 may also include one or more of a multimedia component 703, an input/output (I/O) interface 704, and a communication component 705.
The processor 701 is configured to control the overall operation of the electronic device 700, so as to complete all or part of the steps in the control method of the circulating water pump. The memory 702 is used to store various types of data to support operation on the electronic device 700, which may include, for example, instructions for any application or method operating on the electronic device 700, as well as application-related data, such as contact data, messages sent and received, pictures, audio, video, and so forth. The Memory 702 may be implemented by any type or combination of volatile or non-volatile Memory devices, such as static random access Memory (Static Random Access Memory, SRAM for short), electrically erasable programmable Read-Only Memory (Electrically Erasable Programmable Read-Only Memory, EEPROM for short), erasable programmable Read-Only Memory (Erasable Programmable Read-Only Memory, EPROM for short), programmable Read-Only Memory (Programmable Read-Only Memory, PROM for short), read-Only Memory (ROM for short), magnetic Memory, flash Memory, magnetic disk, or optical disk. The multimedia component 703 can include a screen and an audio component. Wherein the screen may be, for example, a touch screen, the audio component being for outputting and/or inputting audio signals. For example, the audio component may include a microphone for receiving external audio signals. The received audio signals may be further stored in the memory 702 or transmitted through the communication component 705. The audio assembly further comprises at least one speaker for outputting audio signals. The I/O interface 704 provides an interface between the processor 701 and other interface modules, which may be a keyboard, mouse, buttons, etc. These buttons may be virtual buttons or physical buttons. The communication component 705 is for wired or wireless communication between the electronic device 700 and other devices. Wireless communication, such as Wi-Fi, bluetooth, near field communication (Near Field Communication, NFC for short), 2G, 3G, 4G, NB-IOT, eMTC, or other 5G, etc., or one or a combination of more of them, is not limited herein. The corresponding communication component 705 may thus comprise: wi-Fi module, bluetooth module, NFC module, etc.
In an exemplary embodiment, the electronic device 700 may be implemented by one or more application specific integrated circuits (Application Specific Integrated Circuit, abbreviated as ASIC), digital signal processor (Digital Signal Processor, abbreviated as DSP), digital signal processing device (Digital Signal Processing Device, abbreviated as DSPD), programmable logic device (Programmable Logic Device, abbreviated as PLD), field programmable gate array (Field Programmable Gate Array, abbreviated as FPGA), controller, microcontroller, microprocessor, or other electronic component for performing the control method of the circulating water pump described above.
In another exemplary embodiment, there is also provided a computer readable storage medium including program instructions which, when executed by a processor, implement the steps of the control method of a circulating water pump described above. For example, the computer readable storage medium may be the memory 702 including the program instructions described above, which may be executed by the processor 701 of the electronic device 700 to perform the control method of the circulating water pump described above.
In another exemplary embodiment, a computer program product is also provided, which comprises a computer program executable by a programmable apparatus, the computer program having code portions for performing the above-mentioned control method of a circulating water pump when being executed by the programmable apparatus.
The preferred embodiments of the present disclosure have been described in detail above with reference to the accompanying drawings, but the present disclosure is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solutions of the present disclosure within the scope of the technical concept of the present disclosure, and all the simple modifications belong to the protection scope of the present disclosure.
In addition, the specific features described in the above embodiments may be combined in any suitable manner without contradiction. The various possible combinations are not described further in this disclosure in order to avoid unnecessary repetition.
Moreover, any combination between the various embodiments of the present disclosure is possible as long as it does not depart from the spirit of the present disclosure, which should also be construed as the disclosure of the present disclosure.
Claims (10)
1. A control method of a circulating water pump, the method comprising:
acquiring state parameters in a condenser circulating cooling system;
judging whether a fault exists in the condenser circulating cooling system according to the acquired state parameters;
if the condenser circulating cooling system is judged to have faults, the opening and closing of a plurality of circulating water pumps in the condenser circulating cooling system are controlled according to a preset self-recovery strategy.
2. The method of claim 1, wherein the status parameters include a vacuum level inside the condenser and a water pressure inside the circulating water pipe;
judging whether the condenser circulating cooling system has faults according to the acquired state parameters comprises the following steps: and if the vacuum degree in the condenser is lower than a preset vacuum degree threshold value or the water pressure in the circulating water pipe is lower than a preset pressure threshold value, judging that a fault exists in the circulating cooling system of the condenser.
3. The method of claim 2, wherein controlling the turning on and off of the plurality of circulating water pumps in the condenser circulating cooling system according to a predetermined self-recovery strategy comprises: and if the vacuum degree in the condenser is lower than a preset vacuum degree threshold value, or the water pressure in the circulating water pipe is lower than a preset pressure threshold value, controlling to increase the running number of circulating water pumps in the condenser circulating cooling system.
4. The method according to claim 1, wherein the method further comprises:
and if the condenser circulating cooling system is judged to have no fault, controlling the opening and closing of a plurality of circulating water pumps in the condenser circulating cooling system according to a preset switching strategy.
5. The method of claim 4, wherein the predetermined handover policy comprises:
and switching the current running circulating water pump according to the priority order of the preset circulating water pump every preset time.
6. The method of claim 5, wherein the predetermined priority order of the circulating water pump comprises:
the longer the standby time length is, the higher the starting priority of the circulating water pump is;
the longer the operation time length is, the higher the shutdown priority is for the circulating water pump;
starting the circulating water pumps with the same standby time length according to a first default priority;
and for the circulating water pumps with the same operation duration, stopping operation according to the second default priority.
7. The method of claim 4, wherein the predetermined handover policy further comprises: the start and stop of any two circulating water pumps have a preset interval duration.
8. A control device of a circulating water pump, characterized in that the device comprises:
the acquisition module is used for acquiring state parameters in the condenser circulating cooling system;
the judging module is used for judging whether the condenser circulating cooling system has faults or not according to the acquired state parameters;
and the first control module is used for controlling the opening and closing of a plurality of circulating water pumps in the condenser circulating cooling system according to a preset self-recovery strategy if the condenser circulating cooling system is judged to have faults.
9. A non-transitory computer readable storage medium having stored thereon a computer program, characterized in that the program when executed by a processor realizes the steps of the method according to any of claims 1-7.
10. An electronic device, comprising:
a memory having a computer program stored thereon;
a processor for executing the computer program in the memory to implement the steps of the method of any one of claims 1-7.
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