CN113137826A - Mechanical ventilation indirect air cooling system control method and system - Google Patents
Mechanical ventilation indirect air cooling system control method and system Download PDFInfo
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- CN113137826A CN113137826A CN202110434065.7A CN202110434065A CN113137826A CN 113137826 A CN113137826 A CN 113137826A CN 202110434065 A CN202110434065 A CN 202110434065A CN 113137826 A CN113137826 A CN 113137826A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D31/00—Other cooling or freezing apparatus
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
- F25D17/02—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating liquids, e.g. brine
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
- F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
- F25D17/06—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D29/00—Arrangement or mounting of control or safety devices
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Abstract
The invention provides a mechanical ventilation indirect air cooling system control method and a system, wherein the method comprises the following steps: collecting equipment state parameters and ambient temperature in a mechanical ventilation indirect air cooling system; receiving control instruction information input by a user; and controlling the start and stop of the mechanical ventilation indirect air cooling system by using the DCS according to the acquired equipment state parameters and the environmental temperature and the received control instruction information. According to the control method and the system for the mechanical ventilation indirect air cooling system, the one-key start-stop control logic is established based on the DCS, so that the labor amount of operators is greatly reduced, the error rate of manual operation of the operators is reduced, the start-stop operation time of the system is shortened, the peak-load and frequency-modulation capacity of a unit is improved, and the profit margin of an enterprise is improved. By the design of the start-stop logic of the DCS mechanical ventilation indirect air cooling system, the invention realizes one-key completion of operators, and has simple, convenient, safe and reliable operation.
Description
Technical Field
The invention relates to a control technology, in particular to a control method and a system for a mechanical ventilation indirect air cooling system.
Background
In a thermal generator set, an indirect air cooling system of mechanical ventilation is an important device for cooling circulating water of an auxiliary machine. At present, many supercritical and ultra-supercritical units in China often need power plant operators to manually control a mechanical ventilation indirect air cooling system to continuously cool circulating water of an auxiliary machine, time and labor are wasted, and due to insufficient experience of the operators, operation equipment is often tripped, abnormal shutdown of the units is caused, and great economic loss is caused to power generation enterprises.
Meanwhile, in the prior art, the mechanical ventilation indirect air cooling system of the thermal power plant needs to be operated or cut off manually by operators. The power plant operation personnel start and stop the operation or the excision of mechanical ventilation indirect air cooling system for a long time, the amount of labour is bigger, and a large amount of operating equipment in short time causes misoperation easily, causes great damage to people's health or equipment.
Disclosure of Invention
In order to overcome the defect of start-stop operation of the mechanical ventilation indirect air cooling system of the thermal power plant in the prior art, greatly reduce the labor capacity of operators, reduce the error rate of manual operation of the operators and shorten the start-stop operation time of the system, the invention provides a control method of the mechanical ventilation indirect air cooling system, which comprises the following steps:
collecting equipment state parameters and ambient temperature in a mechanical ventilation indirect air cooling system;
receiving control instruction information input by a user;
and controlling the start and stop of the mechanical ventilation indirect air cooling system by using the DCS according to the acquired equipment state parameters and the environmental temperature and the received control instruction information.
In the embodiment of the present invention, the device status parameters include: the water filling state of an auxiliary machine cooling water main pipe in the mechanical ventilation indirect air cooling system, the water level parameter of an underground water storage tank, the cooling water temperature parameter of a cooling tower outlet main pipe, the temperature parameter of a circulating water main pipe and the rotating speed parameter of a fan.
In this embodiment of the present invention, the control instruction information includes: and setting a device state parameter threshold, an environment temperature threshold and a component start-stop sequence in the mechanical ventilation indirect air cooling system.
In the embodiment of the present invention, the controlling, by using the DCS system according to the acquired device state parameters and the ambient temperature and according to the received control instruction information, the start and stop of the mechanical ventilation indirect air cooling system includes:
the DCS judges whether the acquired equipment state parameters and the environment temperature meet set equipment state parameter threshold values and environment temperature threshold values or not;
and if the condition that the equipment state parameter threshold value and the environment temperature threshold value are met is determined, controlling all the components in the mechanical ventilation indirect air cooling system according to the component start-stop sequence in the mechanical ventilation indirect air cooling system so as to realize start-stop control of the mechanical ventilation indirect air cooling system.
In an embodiment of the present invention, if it is determined that the threshold of the device state parameter and the threshold of the ambient temperature are satisfied, controlling, according to a start-stop sequence of components in the mechanical ventilation indirect air-cooling system, the components in the mechanical ventilation indirect air-cooling system to achieve start-stop control of the mechanical ventilation indirect air-cooling system includes:
determining that the water filling state of the auxiliary machine cooling water main pipe is full of water, and executing a first step of starting the mechanical ventilation indirect air cooling system;
the first step comprises: executing the second step if the environmental temperature is judged to be greater than a preset environmental temperature threshold value; or judging that the environmental temperature is not more than the preset environmental temperature and the temperature of the circulating water main pipe is more than the preset temperature threshold value of the circulating water main pipe, and executing the second step;
the second step comprises: the DCS controls a water replenishing valve of the mechanical ventilation indirect air cooling system, starts an underground water replenishing pump, and fills water into an underground water storage tank;
the third step comprises: determining that the water level of an underground water storage tank reaches a preset water level threshold value, stopping the underground water replenishing pump, starting a power ventilation indirect air cooling system bypass, starting a system water inlet main pipe electric valve and starting a system water outlet main pipe electric valve;
the fourth step includes: determining that the inlet valve, the outlet valve, the bypass valve, the drain valve, the water charging pump and the outlet valve of the water charging pump of each sector in the mechanical ventilation indirect air cooling system are in the fully closed positions, starting any auxiliary machine cooling water pump, and simultaneously starting the inlet valve and the outlet valve of the pump; when the temperature of the cooling water of the cooling tower outlet main pipe is not less than a preset cooling water temperature threshold of the cooling tower outlet main pipe, all the cooling triangular electric shutters in the first dry cooling tower are in a fully closed position, the fan is stopped, and the environmental temperature is greater than a preset second temperature threshold, executing a fifth step;
the fifth step includes: starting a water filling pump, opening a water filling pump outlet valve, opening a first dry cooling tower water inlet valve, a first dry cooling tower water outlet valve, a hot section water outlet valve and a cold section water outlet valve, and after filling water into the dry cooling tower, executing a sixth step;
the sixth step includes: filling water into the cooling triangle by the water inlet pipe and the water return pipe of the dry cooling tower sector at the same time, and stopping filling the water pump and closing the pump outlet valve when the water level switch of the exhaust pipe of the sector is operated and the preset time is delayed until the nitrogen bubbles in the cooling triangle disappear; when the temperature of the cooling water of the outlet main pipe of the cooling tower is not less than a preset temperature threshold of the cooling water of the outlet main pipe of the cooling tower, and all the cooling triangular electric shutters in the second dry cooling tower are in a fully closed position and the fan is stopped, and the environmental temperature is greater than a preset second temperature threshold, executing a seventh step;
the seventh step includes: starting a water filling pump, opening a water filling pump outlet valve, opening a second dry cooling tower water inlet valve, a second dry cooling tower water outlet valve, a hot section water outlet valve and a cold section water outlet valve, and performing the eighth step after filling water into the dry cooling tower;
the eighth step includes: and when the opening of all the cooling triangular electric shutters of the second dry cooling tower reaches 100% or the rotating speed of a fan reaches 100%, sequentially putting in third, fourth and fifth dry cooling tower temperature control, executing a five-section dry cooling tower putting-in program, and realizing the starting of the mechanical ventilation indirect air cooling system.
In an embodiment of the present invention, if it is determined that the threshold of the device state parameter and the threshold of the ambient temperature are satisfied, controlling, according to a start-stop sequence of components in the mechanical ventilation indirect air-cooling system, the components in the mechanical ventilation indirect air-cooling system to achieve start-stop control of the mechanical ventilation indirect air-cooling system includes:
when the cooling water pump of the auxiliary machine which is put into operation is suddenly stopped, the standby pump is not put into operation, the second time length is delayed, and the mechanical ventilation indirect air cooling system is executed to stop the program control first step;
the first step comprises: the DCS system closes an outlet door of the circulating water pump, closes the electric shutter and the fan of the cooling triangle of the section which is put into the DCS system, opens a drain valve of the section which is put into the DCS system, closes an inlet valve and an outlet valve of the section so as to enable water in the cooling triangle to be quickly drained into the underground water storage tank, and executes the second step of stopping program control of air cooling after the water level of the underground water storage tank is determined to be stable;
the second step includes: and cutting off a sub-group of control functions of the dry cooling tower.
In the embodiment of the invention, the preset environmental temperature threshold is 5 ℃, the temperature threshold of the circulating water main pipe is 35 ℃, the temperature threshold of the cooling water of the cooling tower outlet main pipe is 40 ℃, and the second temperature threshold is-10 ℃.
Meanwhile, the invention also provides a mechanical ventilation indirect air cooling system control system, which comprises: the system comprises: the mechanical ventilation indirect air cooling system control device is in communication connection with the mechanical ventilation indirect air cooling system; the mechanical ventilation indirect air cooling system control device comprises:
the acquisition module is used for acquiring equipment state parameters and ambient temperature in the mechanical ventilation indirect air cooling system;
the instruction receiving module is used for receiving control instruction information input by a user;
and the control module is used for controlling the start and stop of the mechanical ventilation indirect air cooling system according to the acquired equipment state parameters and the environmental temperature by using the DCS according to the received control instruction information.
Meanwhile, the invention also provides computer equipment which comprises a memory, a processor and a computer program which is stored on the memory and can run on the processor, wherein the processor realizes the method when executing the computer program.
Meanwhile, the invention also provides a computer readable storage medium, and a computer program for executing the method is stored in the computer readable storage medium.
According to the control method and the system for the mechanical ventilation indirect air cooling system, the one-key start-stop control logic is established based on the DCS, so that the labor amount of operators is greatly reduced, the error rate of manual operation of the operators is reduced, the start-stop operation time of the system is shortened, the peak-load and frequency-modulation capacity of a unit is improved, and the profit margin of an enterprise is improved. By the design of the start-stop logic of the DCS mechanical ventilation indirect air cooling system, the invention realizes one-key completion of operators, and has simple, convenient, safe and reliable operation.
In order to make the aforementioned and other objects, features and advantages of the invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a flow chart of a method for controlling an indirect air cooling system with mechanical ventilation according to the present invention;
FIG. 2 is a schematic diagram of an embodiment of the present invention;
FIG. 3 is a block diagram of a control device for an indirect air cooling system with mechanical ventilation according to the present invention;
fig. 4 is a schematic diagram of an embodiment of an electronic device provided in the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Aiming at the problems that in the prior art, all mechanical ventilation indirect air cooling systems of a thermal power plant need to be operated or cut off manually by operators. The power plant operation personnel start and stop the operation or the excision of mechanical ventilation indirect air cooling system for a long time, the amount of labour is bigger, and a large amount of operating equipment in short time causes misoperation easily, causes great damage to people's health or equipment.
The invention provides a mechanical ventilation indirect air cooling system control method, which comprises the following steps as shown in figure 1:
s101, collecting equipment state parameters and ambient temperature in a mechanical ventilation indirect air cooling system;
step S102, receiving control instruction information input by a user;
and S103, controlling the start and stop of the mechanical ventilation indirect air cooling system by using the DCS according to the acquired equipment state parameters and the environmental temperature and the received control instruction information.
The invention provides a control method based on the establishment of a power plant DCS, which greatly reduces the labor amount of operators, reduces the error rate of manual operation of the operators, shortens the starting and stopping operation time of the system, increases the peak-and-frequency-modulation capability of a unit and improves the profit margin of enterprises. By the design of the start-stop logic of the DCS mechanical ventilation indirect air cooling system, the invention realizes one-key completion of operators, and has simple, convenient, safe and reliable operation.
Fig. 2 is a schematic diagram of a mechanical draft indirect air cooling system according to an embodiment of the present invention, which includes: an auxiliary machine cooling water inlet and outlet pipeline; an underground water storage tank; two auxiliary machine circulating cooling water pumps and a plurality of cooling units. Each cooling unit is provided with 4 cooling triangles corresponding to one axial flow wind and the like, as shown in figure 2. The technical solution of the present invention will be further explained in detail with reference to the system shown in fig. 2.
In the embodiment of the present invention, the device status parameters include: the water filling state of an auxiliary machine cooling water main pipe in the mechanical ventilation indirect air cooling system, the water level parameter of an underground water storage tank, the cooling water temperature parameter of a cooling tower outlet main pipe, the temperature parameter of a circulating water main pipe and the rotating speed parameter of a fan.
In this embodiment of the present invention, the control instruction information includes: and setting a device state parameter threshold, an environment temperature threshold and a component start-stop sequence in the mechanical ventilation indirect air cooling system.
Specifically, in the embodiment of the present invention, controlling the start and stop of the mechanical ventilation indirect air cooling system by using the DCS system according to the received control instruction information according to the acquired device state parameters and the ambient temperature includes:
the DCS judges whether the acquired equipment state parameters and the environment temperature meet set equipment state parameter threshold values and environment temperature threshold values or not;
and if the condition that the equipment state parameter threshold value and the environment temperature threshold value are met is determined, controlling all the components in the mechanical ventilation indirect air cooling system according to the component start-stop sequence in the mechanical ventilation indirect air cooling system so as to realize start-stop control of the mechanical ventilation indirect air cooling system.
Through DCS logic configuration, the automatic start-stop function of the mechanical ventilation indirect air cooling system of the thermal power plant is realized, and the complicated operation process of operators is reduced. The starting and stopping time of the mechanical ventilation indirect air cooling system is effectively shortened, the error rate of manual operation of operators can be reduced, the safety of life and equipment is guaranteed, and the economic benefit of enterprises is improved.
Specifically, in the embodiment of the present invention, when it is determined that the threshold of the device state parameter and the threshold of the ambient temperature are satisfied, controlling, according to the start-stop sequence of the components in the mechanical ventilation indirect air-cooling system, the components in the mechanical ventilation indirect air-cooling system to start and stop the mechanical ventilation indirect air-cooling system includes:
determining that the water filling state of the auxiliary machine cooling water main pipe is full of water, and executing a first step of starting the mechanical ventilation indirect air cooling system;
the first step comprises: executing the second step if the environmental temperature is judged to be greater than a preset environmental temperature threshold value; or judging that the environmental temperature is not more than the preset environmental temperature and the temperature of the circulating water main pipe is more than the preset temperature threshold value of the circulating water main pipe, and executing the second step;
the second step comprises: the DCS controls a water replenishing valve of the mechanical ventilation indirect air cooling system, starts an underground water replenishing pump, and fills water into an underground water storage tank;
the third step comprises: determining that the water level of an underground water storage tank reaches a preset water level threshold value, stopping the underground water replenishing pump, starting a power ventilation indirect air cooling system bypass, starting a system water inlet main pipe electric valve and starting a system water outlet main pipe electric valve;
the fourth step includes: determining that the inlet valve, the outlet valve, the bypass valve, the drain valve, the water charging pump and the outlet valve of the water charging pump of each sector in the mechanical ventilation indirect air cooling system are in the fully closed positions, starting any auxiliary machine cooling water pump, and simultaneously starting the inlet valve and the outlet valve of the pump; when the temperature of the cooling water of the cooling tower outlet main pipe is not less than a preset cooling water temperature threshold of the cooling tower outlet main pipe, all the cooling triangular electric shutters in the first dry cooling tower are in a fully closed position, the fan is stopped, and the environmental temperature is greater than a preset second temperature threshold, executing a fifth step;
the fifth step includes: starting a water filling pump, opening a water filling pump outlet valve, opening a first dry cooling tower water inlet valve, a first dry cooling tower water outlet valve, a hot section water outlet valve and a cold section water outlet valve, and after filling water into the dry cooling tower, executing a sixth step;
the sixth step includes: filling water into the cooling triangle by the water inlet pipe and the water return pipe of the dry cooling tower sector at the same time, and stopping filling the water pump and closing the pump outlet valve when the water level switch of the exhaust pipe of the sector is operated and the preset time is delayed until the nitrogen bubbles in the cooling triangle disappear; when the temperature of the cooling water of the outlet main pipe of the cooling tower is not less than a preset temperature threshold of the cooling water of the outlet main pipe of the cooling tower, and all the cooling triangular electric shutters in the second dry cooling tower are in a fully closed position and the fan is stopped, and the environmental temperature is greater than a preset second temperature threshold, executing a seventh step;
the seventh step includes: starting a water filling pump, opening a water filling pump outlet valve, opening a second dry cooling tower water inlet valve, a second dry cooling tower water outlet valve, a hot section water outlet valve and a cold section water outlet valve, and performing the eighth step after filling water into the dry cooling tower;
the eighth step includes: and when the opening of all the cooling triangular electric shutters of the second dry cooling tower reaches 100% or the rotating speed of a fan reaches 100%, sequentially putting in third, fourth and fifth dry cooling tower temperature control, executing a five-section dry cooling tower putting-in program, and realizing the starting of the mechanical ventilation indirect air cooling system.
In an embodiment of the present invention, if it is determined that the threshold of the device state parameter and the threshold of the ambient temperature are satisfied, controlling, according to a start-stop sequence of components in the mechanical ventilation indirect air-cooling system, the components in the mechanical ventilation indirect air-cooling system to achieve start-stop control of the mechanical ventilation indirect air-cooling system includes:
when the cooling water pump of the auxiliary machine which is put into operation is suddenly stopped, the standby pump is not put into operation, the second time length is delayed, and the mechanical ventilation indirect air cooling system is executed to stop the program control first step;
the first step comprises: the DCS system closes an outlet door of the circulating water pump, closes the electric shutter and the fan of the cooling triangle of the section which is put into the DCS system, opens a drain valve of the section which is put into the DCS system, closes an inlet valve and an outlet valve of the section so as to enable water in the cooling triangle to be quickly drained into the underground water storage tank, and executes the second step of stopping program control of air cooling after the water level of the underground water storage tank is determined to be stable;
the second step includes: and cutting off a sub-group of control functions of the dry cooling tower.
In the embodiment of the invention, the preset environmental temperature threshold is 5 ℃, the temperature threshold of the circulating water main pipe is 35 ℃, the temperature threshold of the cooling water of the cooling tower outlet main pipe is 40 ℃, and the second temperature threshold is-10 ℃.
For the start-stop operation of the mechanical ventilation indirect air cooling system of the thermal power plant at present, the embodiment of the invention builds one-key start-stop control logic based on the DCS system of the thermal power plant, greatly lightens the labor amount of operators, reduces the error rate of manual operation of the operators, shortens the start-stop operation time of the system, increases the peak-load and frequency modulation capacity of a unit, and improves the profit margin of enterprises. By the design of the start-stop logic of the DCS mechanical ventilation indirect air cooling system, the invention realizes one-key completion of operators, and has simple, convenient, safe and reliable operation.
Specifically, in the mechanical ventilation indirect air cooling system shown in fig. 2, the automatic start-stop control of the mechanical ventilation indirect air cooling system includes: a dry cooling control function sub-group, a water storage tank control sub-group, an auxiliary machine cold water control function sub-group and a water temperature control sub-group.
The dry cooling tower control function sub-group comprises a sector step sequence control function, a bypass valve control function, a system water charging function and a system water discharging function; the water storage tank control function sub-group mainly comprises system water supply valve control; the auxiliary machine cold water control function sub-group mainly comprises an auxiliary machine circulating water pump and an inlet and outlet door control thereof; the water temperature control subgroup mainly controls the rotation speed of the shutter and the fan.
In this embodiment, the logic for implementing the program control of the start of the mechanical ventilation indirect air cooling system is as follows:
the starting program-controlled starting permission conditions (all conditions need to be met simultaneously) of the mechanical ventilation indirect air cooling system comprise:
determining that the auxiliary machine cooling water main pipe is filled with water;
the mechanical ventilation indirect air cooling system is started for program control in step 1:
the mechanical ventilation indirect air cooling system is judged to belong to a winter mode or a summer mode. In this embodiment: the environment temperature is less than or equal to 5 ℃ and is in a winter mode; ambient temperature >5 ℃ is summer mode.
And when the air cooling system is in a winter mode and the temperature of a circulating water main pipe is more than 35 ℃, executing the step 2 of starting program control. And when the air cooling system is in a summer mode, directly performing the step 2.
Mechanical draft indirect air cooling system starts programme-controlled 2 nd step, specifically includes in this embodiment:
and opening a system water replenishing valve, starting a system water replenishing pump, and filling water into the underground water storage tank.
And (3) starting the mechanical ventilation indirect air cooling system for program control:
(1) and when the water level of the underground water storage tank reaches 3300mm, stopping the water replenishing pump. (the specific water level is determined according to an actual system);
(2) the system comprises a starting power ventilation indirect air cooling system bypass, a system starting water inlet main pipe electric valve and a system starting water outlet main pipe electric valve.
And 4, starting the mechanical ventilation indirect air cooling system for program control:
(1) confirming that the inlet valve, the outlet valve, the bypass valve, the drain valve, the water charging pump and the outlet valve of the water charging pump of each sector are in the fully closed position;
(2) starting any auxiliary machine cooling water pump, and simultaneously opening a pump inlet valve and a pump outlet valve.
And when the temperature of the cooling water of the outlet main pipe of the cooling tower is more than or equal to 40 ℃, and all the cooling triangular electric shutters in the first dry cooling tower are in a fully closed position and the fan is stopped, and no freezing danger exists (belonging to summer working conditions or winter modes and the ambient temperature is-10 ℃), starting to execute the 5 th step by program control.
The mechanical ventilation indirect air cooling system starts the program control step 5, which comprises:
(1) starting the water filling pump, and opening an outlet valve of the water filling pump;
(2) and opening a water inlet valve of the first dry cooling tower, a water outlet valve of the first dry cooling tower, closing a hot section water drain valve and a cold section water drain valve, and filling water into the dry cooling tower.
And 6, starting the mechanical ventilation indirect air cooling system for program control:
(1) and the sectors of the dry cooling tower are quickly filled into the cooling triangles by the water inlet pipe and the water return pipe at the same time, the water level switch of the exhaust pipe filled into the sectors is actuated, nitrogen bubbles in the cooling triangles disappear after the delay of 15s and the like, and the water filling pump and the pump outlet valve are stopped.
(2) And a water temperature control system which is put into a water outlet pipe of the first dry cooling tower.
And when the temperature of the cooling water of the outlet main pipe of the cooling tower is more than or equal to 40 ℃, and all the cooling triangular electric shutters in the second dry cooling tower are in a fully closed position and the fan is stopped, and no freezing danger exists (belonging to summer working conditions or winter modes and the ambient temperature is-10 ℃), starting to execute the step 7 by program control.
And 7, starting the mechanical ventilation indirect air cooling system for program control:
(1) starting the water filling pump, and opening an outlet valve of the water filling pump;
(2) and opening a water inlet valve of the second dry cooling tower, a water outlet valve of the second dry cooling tower, closing a hot section water drain valve and a cold section water drain valve, and filling water into the dry cooling tower.
The mechanical ventilation indirect air cooling system starts the program control step 8, which comprises:
(1) and the sectors of the dry cooling tower are quickly filled into the cooling triangles by the water inlet pipe and the water return pipe at the same time, the water level switch of the exhaust pipe filled into the sectors is actuated, nitrogen bubbles in the cooling triangles disappear after the delay of 15s and the like, and the water filling pump and the pump outlet valve are stopped.
(2) And a water temperature control system which is put into a water outlet pipe of the second dry cooling tower.
When the opening of the second dry cooling tower all cooling triangular electric shutter reaches 100% or the rotating speed of the fan reaches 100%, the 3 rd, 4 th and 5 th dry cooling tower temperature control is put in sequence according to the steps, and the rest is done in sequence, the five-section dry cooling tower putting program is executed all the time, and the system display displays the putting signals of all the sectors.
The above description is the logic for implementing the program control for the start-up of the mechanical ventilation indirect air cooling system in this embodiment.
In this embodiment, the logic for stopping the program control of the mechanical ventilation indirect air cooling system is as follows:
when the auxiliary machine cooling water pump which is already put into operation is suddenly stopped, the standby pump is not put into operation. And when the conditions are met, delaying for 5 minutes, and automatically putting the auxiliary machine cooling water forced ventilation air cooling system to stop program control, or allowing an operator to manually operate the auxiliary machine cooling water forced ventilation air cooling system to stop program control.
Mechanical draft indirect air cooling system stops programmed control step 1, and it includes:
(1) closing an outlet door of the circulating water pump;
(2) closing the put sector cooling triangular electric shutter and the fan;
(3) and opening a water drain valve of the loaded sector, and closing an inlet valve and an outlet valve of the sector, so that the water in the cooling triangle is quickly drained into the underground water storage tank.
And when the water level of the water storage tank does not rise obviously, entering air cooling program control to stop program control in the step 2 after the water level is stable.
The mechanical ventilation indirect air cooling system stops the program control step 2, and the method comprises the following steps:
the control function subgroup of the dry cooling tower is automatically cut off, and the system display displays that the mechanical ventilation indirect air cooling system stops program control.
Meanwhile, the invention also provides a mechanical ventilation indirect air cooling system control system, which comprises: the system comprises: the mechanical ventilation indirect air cooling system control device is in communication connection with the mechanical ventilation indirect air cooling system; as shown in fig. 3, in the embodiment of the present invention, the mechanical ventilation indirect air cooling system control device includes:
the acquisition module 301 is used for acquiring equipment state parameters and ambient temperature in the mechanical ventilation indirect air cooling system;
an instruction receiving module 302, configured to receive control instruction information input by a user;
and the control module 303 is configured to control start and stop of the mechanical ventilation indirect air cooling system according to the acquired device state parameters and the ambient temperature and the received control instruction information by using the DCS system.
The present embodiment also provides an electronic device, which may be a desktop computer, a tablet computer, a mobile terminal, and the like, but is not limited thereto. In this embodiment, the electronic device may refer to the embodiments of the method and the apparatus, and the contents thereof are incorporated herein, and repeated descriptions are omitted.
Fig. 4 is a schematic block diagram of a system configuration of an electronic apparatus 600 according to an embodiment of the present invention. As shown in fig. 4, the electronic device 600 may include a central processor 100 and a memory 140; the memory 140 is coupled to the central processor 100. Notably, this diagram is exemplary; other types of structures may also be used in addition to or in place of the structure to implement telecommunications or other functions.
In one embodiment, the mechanical ventilation indirect air cooling system control function may be integrated into the cpu 100. The central processor 100 may be configured to control as follows:
collecting equipment state parameters and ambient temperature in a mechanical ventilation indirect air cooling system;
receiving control instruction information input by a user;
and controlling the start and stop of the mechanical ventilation indirect air cooling system by using the DCS according to the acquired equipment state parameters and the environmental temperature and the received control instruction information.
In the embodiment of the present invention, the device status parameters include: the water filling state of an auxiliary machine cooling water main pipe in the mechanical ventilation indirect air cooling system, the water level parameter of an underground water storage tank, the cooling water temperature parameter of a cooling tower outlet main pipe, the temperature parameter of a circulating water main pipe and the rotating speed parameter of a fan.
In this embodiment of the present invention, the control instruction information includes: and setting a device state parameter threshold, an environment temperature threshold and a component start-stop sequence in the mechanical ventilation indirect air cooling system.
In the embodiment of the present invention, the controlling, by using the DCS system according to the acquired device state parameters and the ambient temperature and according to the received control instruction information, the start and stop of the mechanical ventilation indirect air cooling system includes:
the DCS judges whether the acquired equipment state parameters and the environment temperature meet set equipment state parameter threshold values and environment temperature threshold values or not;
and if the condition that the equipment state parameter threshold value and the environment temperature threshold value are met is determined, controlling all the components in the mechanical ventilation indirect air cooling system according to the component start-stop sequence in the mechanical ventilation indirect air cooling system so as to realize start-stop control of the mechanical ventilation indirect air cooling system.
In an embodiment of the present invention, if it is determined that the threshold of the device state parameter and the threshold of the ambient temperature are satisfied, controlling, according to a start-stop sequence of components in the mechanical ventilation indirect air-cooling system, the components in the mechanical ventilation indirect air-cooling system to achieve start-stop control of the mechanical ventilation indirect air-cooling system includes:
determining that the water filling state of the auxiliary machine cooling water main pipe is full of water, and executing a first step of starting the mechanical ventilation indirect air cooling system;
the first step comprises: executing the second step if the environmental temperature is judged to be greater than a preset environmental temperature threshold value; or judging that the environmental temperature is not more than the preset environmental temperature and the temperature of the circulating water main pipe is more than the preset temperature threshold value of the circulating water main pipe, and executing the second step;
the second step comprises: the DCS controls a water replenishing valve of the mechanical ventilation indirect air cooling system, starts an underground water replenishing pump, and fills water into an underground water storage tank;
the third step comprises: determining that the water level of an underground water storage tank reaches a preset water level threshold value, stopping the underground water replenishing pump, starting a power ventilation indirect air cooling system bypass, starting a system water inlet main pipe electric valve and starting a system water outlet main pipe electric valve;
the fourth step includes: determining that the inlet valve, the outlet valve, the bypass valve, the drain valve, the water charging pump and the outlet valve of the water charging pump of each sector in the mechanical ventilation indirect air cooling system are in the fully closed positions, starting any auxiliary machine cooling water pump, and simultaneously starting the inlet valve and the outlet valve of the pump; when the temperature of the cooling water of the cooling tower outlet main pipe is not less than a preset cooling water temperature threshold of the cooling tower outlet main pipe, all the cooling triangular electric shutters in the first dry cooling tower are in a fully closed position, the fan is stopped, and the environmental temperature is greater than a preset second temperature threshold, executing a fifth step;
the fifth step includes: starting a water filling pump, opening a water filling pump outlet valve, opening a first dry cooling tower water inlet valve, a first dry cooling tower water outlet valve, a hot section water outlet valve and a cold section water outlet valve, and after filling water into the dry cooling tower, executing a sixth step;
the sixth step includes: filling water into the cooling triangle by the water inlet pipe and the water return pipe of the dry cooling tower sector at the same time, and stopping filling the water pump and closing the pump outlet valve when the water level switch of the exhaust pipe of the sector is operated and the preset time is delayed until the nitrogen bubbles in the cooling triangle disappear; when the temperature of the cooling water of the outlet main pipe of the cooling tower is not less than a preset temperature threshold of the cooling water of the outlet main pipe of the cooling tower, and all the cooling triangular electric shutters in the second dry cooling tower are in a fully closed position and the fan is stopped, and the environmental temperature is greater than a preset second temperature threshold, executing a seventh step;
the seventh step includes: starting a water filling pump, opening a water filling pump outlet valve, opening a second dry cooling tower water inlet valve, a second dry cooling tower water outlet valve, a hot section water outlet valve and a cold section water outlet valve, and performing the eighth step after filling water into the dry cooling tower;
the eighth step includes: and when the opening of all the cooling triangular electric shutters of the second dry cooling tower reaches 100% or the rotating speed of a fan reaches 100%, sequentially putting in third, fourth and fifth dry cooling tower temperature control, executing a five-section dry cooling tower putting-in program, and realizing the starting of the mechanical ventilation indirect air cooling system.
In an embodiment of the present invention, if it is determined that the threshold of the device state parameter and the threshold of the ambient temperature are satisfied, controlling, according to a start-stop sequence of components in the mechanical ventilation indirect air-cooling system, the components in the mechanical ventilation indirect air-cooling system to achieve start-stop control of the mechanical ventilation indirect air-cooling system includes:
when the cooling water pump of the auxiliary machine which is put into operation is suddenly stopped, the standby pump is not put into operation, the second time length is delayed, and the mechanical ventilation indirect air cooling system is executed to stop the program control first step;
the first step comprises: the DCS system closes an outlet door of the circulating water pump, closes the electric shutter and the fan of the cooling triangle of the section which is put into the DCS system, opens a drain valve of the section which is put into the DCS system, closes an inlet valve and an outlet valve of the section so as to enable water in the cooling triangle to be quickly drained into the underground water storage tank, and executes the second step of stopping program control of air cooling after the water level of the underground water storage tank is determined to be stable;
the second step includes: and cutting off a sub-group of control functions of the dry cooling tower.
In another embodiment, the mechanical ventilation indirect air-cooling system control device may be configured separately from the cpu 100, for example, the mechanical ventilation indirect air-cooling system control device may be configured as a chip connected to the cpu 100, and the mechanical ventilation indirect air-cooling system control function is realized by the control of the cpu.
As shown in fig. 4, the electronic device 600 may further include: communication module 110, input unit 120, audio processing unit 130, display 160, power supply 170. It is noted that the electronic device 600 does not necessarily include all of the components shown in fig. 4; furthermore, the electronic device 600 may also comprise components not shown in fig. 4, which may be referred to in the prior art.
As shown in fig. 4, the central processor 100, sometimes referred to as a controller or operational control, may include a microprocessor or other processor device and/or logic device, the central processor 100 receiving input and controlling the operation of the various components of the electronic device 600.
The memory 140 may be, for example, one or more of a buffer, a flash memory, a hard drive, a removable media, a volatile memory, a non-volatile memory, or other suitable device. The information relating to the failure may be stored, and a program for executing the information may be stored. And the central processing unit 100 may execute the program stored in the memory 140 to realize information storage or processing, etc.
The input unit 120 provides input to the cpu 100. The input unit 120 is, for example, a key or a touch input device. The power supply 170 is used to provide power to the electronic device 600. The display 160 is used to display an object to be displayed, such as an image or a character. The display may be, for example, an LCD display, but is not limited thereto.
The memory 140 may be a solid state memory such as Read Only Memory (ROM), Random Access Memory (RAM), a SIM card, or the like. There may also be a memory that holds information even when power is off, can be selectively erased, and is provided with more data, an example of which is sometimes called an EPROM or the like. The memory 140 may also be some other type of device. Memory 140 includes buffer memory 141 (sometimes referred to as a buffer). The memory 140 may include an application/function storage section 142, and the application/function storage section 142 is used to store application programs and function programs or a flow for executing the operation of the electronic device 600 by the central processing unit 100.
The memory 140 may also include a data store 143, the data store 143 for storing data, such as contacts, digital data, pictures, sounds, and/or any other data used by the electronic device. The driver storage portion 144 of the memory 140 may include various drivers of the electronic device for communication functions and/or for performing other functions of the electronic device (e.g., messaging application, address book application, etc.).
The communication module 110 is a transmitter/receiver 110 that transmits and receives signals via an antenna 111. The communication module (transmitter/receiver) 110 is coupled to the central processor 100 to provide an input signal and receive an output signal, which may be the same as in the case of a conventional mobile communication terminal.
Based on different communication technologies, a plurality of communication modules 110, such as a cellular network module, a bluetooth module, and/or a wireless local area network module, may be provided in the same electronic device. The communication module (transmitter/receiver) 110 is also coupled to a speaker 131 and a microphone 132 via an audio processor 130 to provide audio output via the speaker 131 and receive audio input from the microphone 132 to implement general telecommunications functions. Audio processor 130 may include any suitable buffers, decoders, amplifiers and so forth. In addition, an audio processor 130 is also coupled to the central processor 100, so that recording on the local can be enabled through a microphone 132, and so that sound stored on the local can be played through a speaker 131.
Embodiments of the present invention also provide a computer-readable program, where when the program is executed in an electronic device, the program causes a computer to execute the mechanical ventilation indirect air-cooling system control method in the electronic device according to the above embodiments.
Embodiments of the present invention further provide a storage medium storing a computer-readable program, where the computer-readable program enables a computer to execute the mechanical ventilation indirect air cooling system control described in the above embodiments in an electronic device.
The preferred embodiments of the present invention have been described above with reference to the accompanying drawings. The many features and advantages of the embodiments are apparent from the detailed specification, and thus, it is intended by the appended claims to cover all such features and advantages of the embodiments that fall within the true spirit and scope thereof. Further, since numerous modifications and changes will readily occur to those skilled in the art, it is not desired to limit the embodiments of the invention to the exact construction and operation illustrated and described, and accordingly, all suitable modifications and equivalents may be resorted to, falling within the scope thereof.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
The principle and the implementation mode of the invention are explained by applying specific embodiments in the invention, and the description of the embodiments is only used for helping to understand the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Claims (10)
1. A mechanical ventilation indirect air cooling system control method is characterized by comprising the following steps:
collecting equipment state parameters and ambient temperature in a mechanical ventilation indirect air cooling system;
receiving control instruction information input by a user;
and controlling the start and stop of the mechanical ventilation indirect air cooling system by using the DCS according to the acquired equipment state parameters and the environmental temperature and the received control instruction information.
2. The method of claim 1, wherein the plant condition parameters include: the water filling state of an auxiliary machine cooling water main pipe in the mechanical ventilation indirect air cooling system, the water level parameter of an underground water storage tank, the cooling water temperature parameter of a cooling tower outlet main pipe, the temperature parameter of a circulating water main pipe and the rotating speed parameter of a fan.
3. The method of claim 1, wherein the control command information includes: and setting a device state parameter threshold, an environment temperature threshold and a component start-stop sequence in the mechanical ventilation indirect air cooling system.
4. The method for controlling the mechanical ventilation indirect air-cooling system according to claim 3, wherein the step of controlling the mechanical ventilation indirect air-cooling system to start and stop by using the DCS system according to the received control instruction information according to the collected equipment state parameters and the ambient temperature comprises the steps of:
the DCS judges whether the acquired equipment state parameters and the environment temperature meet set equipment state parameter threshold values and environment temperature threshold values or not;
and if the condition that the equipment state parameter threshold value and the environment temperature threshold value are met is determined, controlling all the components in the mechanical ventilation indirect air cooling system according to the component start-stop sequence in the mechanical ventilation indirect air cooling system so as to realize start-stop control of the mechanical ventilation indirect air cooling system.
5. The method according to claim 4, wherein the step of determining that the threshold of the plant state parameter and the threshold of the ambient temperature are met, controlling the components in the mechanical ventilation indirect air-cooling system according to the start-stop sequence of the components in the mechanical ventilation indirect air-cooling system to control the start-stop of the mechanical ventilation indirect air-cooling system comprises:
determining that the water filling state of the auxiliary machine cooling water main pipe is full of water, and executing a first step of starting the mechanical ventilation indirect air cooling system;
the first step comprises: executing the second step if the environmental temperature is judged to be greater than a preset environmental temperature threshold value; or judging that the environmental temperature is not more than the preset environmental temperature and the temperature of the circulating water main pipe is more than the preset temperature threshold value of the circulating water main pipe, and executing the second step;
the second step comprises: the DCS controls a water replenishing valve of the mechanical ventilation indirect air cooling system, starts an underground water replenishing pump, and fills water into an underground water storage tank;
the third step comprises: determining that the water level of an underground water storage tank reaches a preset water level threshold value, stopping the underground water replenishing pump, starting a power ventilation indirect air cooling system bypass, starting a system water inlet main pipe electric valve and starting a system water outlet main pipe electric valve;
the fourth step includes: determining that the inlet valve, the outlet valve, the bypass valve, the drain valve, the water charging pump and the outlet valve of the water charging pump of each sector in the mechanical ventilation indirect air cooling system are in the fully closed positions, starting any auxiliary machine cooling water pump, and simultaneously starting the inlet valve and the outlet valve of the pump; when the temperature of the cooling water of the cooling tower outlet main pipe is not less than a preset cooling water temperature threshold of the cooling tower outlet main pipe, all the cooling triangular electric shutters in the first dry cooling tower are in a fully closed position, the fan is stopped, and the environmental temperature is greater than a preset second temperature threshold, executing a fifth step;
the fifth step includes: starting a water filling pump, opening a water filling pump outlet valve, opening a first dry cooling tower water inlet valve, a first dry cooling tower water outlet valve, a hot section water outlet valve and a cold section water outlet valve, and after filling water into the dry cooling tower, executing a sixth step;
the sixth step includes: filling water into the cooling triangle by the water inlet pipe and the water return pipe of the dry cooling tower sector at the same time, and stopping filling the water pump and closing the pump outlet valve when the water level switch of the exhaust pipe of the sector is operated and the preset time is delayed until the nitrogen bubbles in the cooling triangle disappear; when the temperature of the cooling water of the outlet main pipe of the cooling tower is not less than a preset temperature threshold of the cooling water of the outlet main pipe of the cooling tower, and all the cooling triangular electric shutters in the second dry cooling tower are in a fully closed position and the fan is stopped, and the environmental temperature is greater than a preset second temperature threshold, executing a seventh step;
the seventh step includes: starting a water filling pump, opening a water filling pump outlet valve, opening a second dry cooling tower water inlet valve, a second dry cooling tower water outlet valve, a hot section water outlet valve and a cold section water outlet valve, and performing the eighth step after filling water into the dry cooling tower;
the eighth step includes: and when the opening of all the cooling triangular electric shutters of the second dry cooling tower reaches 100% or the rotating speed of a fan reaches 100%, sequentially putting in third, fourth and fifth dry cooling tower temperature control, executing a five-section dry cooling tower putting-in program, and realizing the starting of the mechanical ventilation indirect air cooling system.
6. The method according to claim 4, wherein the step of determining that the threshold of the plant state parameter and the threshold of the ambient temperature are met, controlling the components in the mechanical ventilation indirect air-cooling system according to the start-stop sequence of the components in the mechanical ventilation indirect air-cooling system to control the start-stop of the mechanical ventilation indirect air-cooling system comprises:
when the cooling water pump of the auxiliary machine which is put into operation is suddenly stopped, the standby pump is not put into operation, the second time length is delayed, and the mechanical ventilation indirect air cooling system is executed to stop the program control first step;
the first step comprises: the DCS system closes an outlet door of the circulating water pump, closes the electric shutter and the fan of the cooling triangle of the section which is put into the DCS system, opens a drain valve of the section which is put into the DCS system, closes an inlet valve and an outlet valve of the section so as to enable water in the cooling triangle to be quickly drained into the underground water storage tank, and executes the second step of stopping program control of air cooling after the water level of the underground water storage tank is determined to be stable;
the second step includes: and cutting off a sub-group of control functions of the dry cooling tower.
7. The method of claim 5, wherein the predetermined ambient temperature threshold is 5 ℃, the circulating water main temperature threshold is 35 ℃, the cooling water temperature threshold of the cooling tower outlet main pipe is 40 ℃, and the second temperature threshold is-10 ℃.
8. A mechanical draft indirect air cooling system control system, characterized in that, the system include: the mechanical ventilation indirect air cooling system control device is in communication connection with the mechanical ventilation indirect air cooling system; the mechanical ventilation indirect air cooling system control device comprises:
the acquisition module is used for acquiring equipment state parameters and ambient temperature in the mechanical ventilation indirect air cooling system;
the instruction receiving module is used for receiving control instruction information input by a user;
and the control module is used for controlling the start and stop of the mechanical ventilation indirect air cooling system according to the acquired equipment state parameters and the environmental temperature by using the DCS according to the received control instruction information.
9. A computer device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, characterized in that the processor implements the method of any of claims 1 to 7 when executing the computer program.
10. A computer-readable storage medium, characterized in that the computer-readable storage medium stores a computer program for executing the method of any one of claims 1 to 7.
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