CN212132815U - Intelligent cold station control system - Google Patents
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- CN212132815U CN212132815U CN202020775403.4U CN202020775403U CN212132815U CN 212132815 U CN212132815 U CN 212132815U CN 202020775403 U CN202020775403 U CN 202020775403U CN 212132815 U CN212132815 U CN 212132815U
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- 238000001816 cooling Methods 0.000 claims abstract description 178
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- 238000006243 chemical reaction Methods 0.000 claims abstract description 92
- 238000007710 freezing Methods 0.000 claims description 55
- 230000008014 freezing Effects 0.000 claims description 55
- 239000000498 cooling water Substances 0.000 claims description 51
- 238000001514 detection method Methods 0.000 claims description 22
- 238000004378 air conditioning Methods 0.000 abstract description 12
- 238000005057 refrigeration Methods 0.000 abstract description 12
- 238000010586 diagram Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 4
- 230000001276 controlling effect Effects 0.000 description 3
- 238000012937 correction Methods 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
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Abstract
The utility model provides an intelligence cold station control system, including cold station main control cabinet, cold station main control cabinet is connected respectively through system bus and chilled water pump intelligence frequency conversion controller, cooling tower intelligence frequency conversion controller, cold station main control cabinet, chilled water pump intelligence frequency conversion controller, cooling tower intelligence frequency conversion controller all are provided with the control unit who corresponds, cooling tower intelligence frequency conversion controller sets for one of them cooling tower as the master station controller, and other cooling towers are slave station controller, manage the operation from the station controller through the master station controller. The intelligent cold station control system is applicable to intelligent control of central air-conditioning refrigeration stations of all comprehensive projects, and provides the whole energy-saving rate.
Description
Technical Field
The utility model relates to a cold station system especially relates to an intelligence cold station control system.
Background
The central air-conditioning cold station provides air-conditioning chilled water for public buildings, and generally comprises a cooler, a freezing pump, a cooling tower, a valve, an automatic control system and the like. The automatic control system of the central air-conditioning cold station can realize automatic management and control, can greatly improve the automation level of the cold station, reduce the input of management manpower and material resources, and improve the energy efficiency level of the central air-conditioning system.
The control mode of the traditional central air-conditioning cold station control system has poor energy-saving effect. Different control modes (such as the number of cold machines, the number of water pumps, the amount of cooling water and the like) have great influence on the energy efficiency level of the central air-conditioning cold station. The traditional control system of the central air-conditioning cold station only realizes the basic functions of starting, stopping, protecting, monitoring and the like of equipment generally, and does not pay attention to energy-saving control, so that the overall operation energy efficiency of the central air-conditioning cold station is lower.
SUMMERY OF THE UTILITY MODEL
The utility model provides an intelligence cold station control system has solved the energy-saving control's of central air conditioning cold station problem, its technical scheme as follows:
the intelligent cooling station control system comprises a cooling station main control cabinet, wherein the cooling station main control cabinet is respectively connected with a refrigeration water pump intelligent frequency conversion controller, a cooling water pump intelligent frequency conversion controller and a cooling tower intelligent frequency conversion controller through a system bus, the cooling station main control cabinet, the refrigeration water pump intelligent frequency conversion controller, the cooling water pump intelligent frequency conversion controller and the cooling tower intelligent frequency conversion controller are respectively provided with a corresponding control unit, one cooling tower is set as a main station controller by the cooling tower intelligent frequency conversion controller, other cooling towers are slave station controllers, and the operation of the slave station controllers is managed through the main station controller.
The intelligent variable frequency controller of the refrigerating water pump is installed on a refrigerating pump branch line, the intelligent variable frequency controller of the cooling water pump is installed on a cooling pump branch line, and the intelligent variable frequency controller of the cooling tower is installed on a cooling tower branch line.
The cold station main control cabinet comprises a cold station main control cabinet control unit, a cold station main control cabinet detection unit and a cold station main control cabinet execution structure, wherein the cold station main control cabinet control unit is respectively connected with the cold station main control cabinet detection unit, the cold station main control cabinet execution structure, a freezing/cooling water pump intelligent frequency conversion controller, a cooling tower intelligent frequency conversion controller and a refrigerator controller of a refrigerator, the cold station main control cabinet detection unit is respectively connected with a freezing side water supply/return temperature/pressure sensor and a cooling side water inlet/outlet temperature/pressure sensor, and the cold station main control cabinet execution structure is connected with a refrigerator freezing/cooling side electric valve.
The intelligent variable frequency controller of the chilled water pump is provided with a control unit and a driving unit which correspond to each other, the control unit of the intelligent variable frequency controller of the chilled water pump is connected with the control unit of the main control cabinet of the cold station, the control unit of the intelligent variable frequency controller of the chilled water pump is connected with the driving unit of the intelligent variable frequency controller of the chilled water pump, and the driving unit of the intelligent variable frequency controller of the chilled water pump is connected with the chilled water pump.
The intelligent cooling water pump frequency conversion controller is provided with a control unit and a driving unit which correspond to each other, the control unit of the intelligent cooling water pump frequency conversion controller is connected with the control unit of the cold station main control cabinet, the control unit of the intelligent cooling water pump frequency conversion controller is connected with the driving unit of the intelligent cooling water pump frequency conversion controller, and the driving unit of the intelligent cooling water pump frequency conversion controller is connected with the cooling water pump.
In a cooling tower serving as a main station controller, a control unit of the intelligent frequency conversion controller of the cooling tower is respectively connected with a control unit of a main control cabinet of the cooling station, a slave station controller of the intelligent frequency conversion controller of the cooling tower, a driving unit of the intelligent frequency conversion controller of the cooling tower, a detection unit of the intelligent frequency conversion controller of the cooling tower and an execution mechanism of the intelligent frequency conversion controller of the cooling tower, the driving unit of the intelligent frequency conversion controller of the cooling tower is connected with a fan of the cooling tower, the detection unit of the intelligent frequency conversion controller of the cooling tower is connected with a temperature sensor, a humidity sensor and a pressure sensor in the cooling tower, and the execution mechanism of the intelligent frequency conversion controller of the cooling tower is connected with an electric valve of a water pipe of the cooling.
In a cooling tower serving as a slave station controller, a slave station controller of the cooling tower intelligent frequency conversion controller is respectively connected with a control unit of the cooling tower intelligent frequency conversion controller, a driving unit of the cooling tower intelligent frequency conversion controller, a detection unit of the cooling tower intelligent frequency conversion controller and an execution mechanism of the cooling tower intelligent frequency conversion controller, the driving unit of the cooling tower intelligent frequency conversion controller is connected with a cooling tower fan, the detection unit of the cooling tower intelligent frequency conversion controller is connected with a temperature sensor, a humidity sensor and a pressure sensor in the cooling tower, and the execution mechanism of the cooling tower intelligent frequency conversion controller is connected with an electric valve of a cooling tower water pipe.
The freezing side water supply/return temperature/pressure sensor is a freezing side water supply temperature sensor, a freezing side return temperature sensor, a freezing side water supply pressure sensor and a freezing side return pressure sensor; the cooling side inlet/outlet water temperature/pressure sensors are a cooling side water supply temperature sensor, a cooling side return water temperature sensor, a cooling side water supply pressure sensor and a cooling side return water pressure sensor; the electric valve at the freezing/cooling side of the refrigerator refers to the electric valve at the freezing side of the refrigerator and the electric valve at the cooling side of the refrigerator.
And the control unit of the main control cabinet of the cold station is connected with a human-computer interface.
The control unit corresponding to each device adopts a single chip microcomputer, an ARM processor or an FPGA programmable controller, the detection unit arranged in each device adopts the single chip microcomputer with data transmission, the driving unit arranged in each device adopts an electromagnetic valve, and the execution mechanism arranged in each device adopts the single chip microcomputer with common data transmission.
The intelligent cold station control system is applicable to intelligent control of central air-conditioning refrigeration stations of all comprehensive projects, and provides the whole energy-saving rate.
Drawings
FIG. 1 is a schematic diagram of the intelligent cold station control system;
FIG. 2 is a schematic connection diagram of the cold station main control cabinet;
FIG. 3 is a schematic connection diagram of the intelligent variable frequency controller of the freezing/cooling water pump;
FIG. 4 is a schematic connection diagram of the intelligent inverter controller of the cooling tower;
FIG. 5 is a schematic diagram of the control logic for the variable frequency of the chilled water pump;
FIG. 6 is a schematic diagram of the control logic of the cooling water pump;
FIG. 7 is a schematic diagram of the control logic of the cooling tower.
Detailed Description
The utility model provides an intelligence cold station control system for automatic, intelligent refrigerated water supply control system's full series of products, as relatively independent the control unit, inserts holistic energy management system.
As shown in figure 1, the utility model provides an intelligence cold station control system includes cold station main control cabinet, refrigeration/cooling water pump intelligence variable frequency controller, cooling tower intelligence variable frequency controller. The intelligent variable frequency controller of the freezing/cooling water pump is short for two controllers of the intelligent variable frequency controller of the freezing water pump and the intelligent variable frequency controller of the cooling water pump.
And the cold station main control cabinet is respectively connected with the intelligent variable frequency controller of the freezing/cooling water pump and the intelligent variable frequency controller of the cooling tower through a system bus. The intelligent variable frequency controller of the refrigerating water pump is installed on a refrigerating pump branch line, the intelligent variable frequency controller of the cooling water pump is installed on a cooling pump branch line, and the intelligent variable frequency controller of the cooling tower is installed on a cooling tower branch line.
(1) The cold station main control cabinet has the following functions:
and the cold station main control cabinet is arranged on the host machine and sends control instructions to a refrigerator, a chilled water pump, a cooling water pump and a cooling tower in the energy management system. The cold station main control cabinet acquires the temperature of the water supply and return at the freezing side through a freezing side temperature sensor, acquires the pressure of the water supply and return at the freezing side through a freezing side pressure sensor, performs energy-saving calculation through acquiring the temperature and pressure at the freezing side and cold machine information, and timely adjusts the running frequency of a water pump at the freezing side. The main control cabinet of the cold station collects the temperature of cooling side inlet and outlet water through a cooling side temperature sensor, collects the pressure of the cooling side inlet and outlet water through a cooling side pressure sensor, performs energy-saving calculation through collecting the temperature and the pressure of the cooling side and cold machine information, and timely adjusts the running quantity and the frequency of a cooling side water pump and the heat dissipation capacity of a cooling tower.
(2) The intelligent variable frequency controller of the freezing water pump and the intelligent variable frequency controller of the cooling water pump have the following functions:
the intelligent frequency conversion controller of the freezing/cooling water pump is a direct controller of the frequency converter of the freezing water pump/cooling water pump, is one of instruction executors of a main control cabinet of a cold station, and can control two freezing water pumps/cooling water pumps by each intelligent frequency conversion controller of the freezing/cooling water pump.
(3) The intelligent frequency conversion controller of the cooling tower has the following functions:
the cooling tower intelligent frequency conversion controller is a direct controller of a cooling tower frequency converter, and can be set through attributes and selected as a cooling tower main controller or a cooling tower slave controller.
When the main controller of the cooling tower is set as: can be regarded as an instruction executor of the main control cabinet of the cold station and can also be controlled independently.
When set as a cooling tower slave controller: it is the command executor of the main controller of the cooling tower.
And each cooling tower intelligent frequency conversion controller can control a cooling tower fan frequency converter and a fan soft starter.
In conclusion, the intelligent cold station control system can be suitable for intelligent control of the central air-conditioning refrigeration station of all comprehensive projects, and the overall energy saving rate is 5% -20%.
As shown in fig. 2, the cold station main control cabinet comprises a cold station main control cabinet control unit, a cold station main control cabinet detection unit, and a cold station main control cabinet execution structure, wherein the cold station main control cabinet control unit is respectively connected with the cold station main control cabinet detection unit, the cold station main control cabinet execution structure, the freezing/cooling water pump intelligent frequency conversion controller, the cooling tower intelligent frequency conversion controller, and the refrigerator controller of the refrigerator, the cold station main control cabinet detection unit is respectively connected with the freezing side water supply/return temperature/pressure sensor, the cooling side water inlet/outlet temperature/pressure sensor, and the cold station main control cabinet execution structure is connected with the refrigerator freezing/cooling side electric valve.
The freezing side water supply/return temperature/pressure sensor is a freezing side water supply temperature sensor, a freezing side water return temperature sensor, a freezing side water supply pressure sensor and a freezing side water return pressure sensor for short.
The cooling side inlet/outlet water temperature/pressure sensor is a cooling side water supply temperature sensor, a cooling side return water temperature sensor, a cooling side water supply pressure sensor and a cooling side return water pressure sensor for short.
The electric valve at the freezing/cooling side of the refrigerator is short for the electric valve at the freezing side of the refrigerator and the electric valve at the cooling side of the refrigerator.
As shown in fig. 3, the intelligent variable frequency controller of the freezing/cooling water pump is provided with a corresponding control unit and a corresponding driving unit, and the control unit of the intelligent variable frequency controller of the freezing/cooling water pump is connected with a main control cabinet of a cold station, specifically, the control unit of the main control cabinet of the cold station. The control unit of the intelligent variable frequency controller of the freezing/cooling water pump is connected with the driving unit of the intelligent variable frequency controller of the freezing/cooling water pump, and the driving unit of the intelligent variable frequency controller of the freezing/cooling water pump is connected with the freezing/cooling water pump.
As shown in fig. 4, the cooling tower intelligent variable frequency controller is provided with a corresponding control unit, a driving unit, a detecting unit and an executing mechanism, wherein the control unit of one cooling tower intelligent variable frequency controller is used as a master controller, and the control units of the other cooling tower intelligent variable frequency controllers are used as slave controllers.
For a cooling tower main controller, a control unit of the cooling tower intelligent frequency conversion controller is respectively connected with a slave station controller of the cooling tower intelligent frequency conversion controller, a driving unit of the cooling tower intelligent frequency conversion controller, a detection unit of the cooling tower intelligent frequency conversion controller and an execution mechanism of the cooling tower intelligent frequency conversion controller, the driving unit of the cooling tower intelligent frequency conversion controller is connected with a cooling tower fan, the detection unit of the cooling tower intelligent frequency conversion controller is connected with a temperature sensor, a humidity sensor and a pressure sensor in a cooling tower, and the execution mechanism of the cooling tower intelligent frequency conversion controller is connected with a cooling tower water pipe electric valve.
Similarly, for the slave controller of the cooling tower, the slave station control unit of the intelligent frequency conversion controller of the cooling tower is connected with the control unit of the intelligent frequency conversion controller of the cooling tower, and is also connected with the driving unit of the intelligent frequency conversion controller of the cooling tower, the detection unit of the intelligent frequency conversion controller of the cooling tower and the execution mechanism of the intelligent frequency conversion controller of the cooling tower respectively, the driving unit of the intelligent frequency conversion controller of the cooling tower is connected with a fan of the cooling tower, the detection unit of the intelligent frequency conversion controller of the cooling tower is connected with a temperature sensor, a humidity sensor and a pressure sensor in the cooling tower, and the execution mechanism of the intelligent frequency conversion controller of the cooling tower is connected with an electric valve of a water pipe of the cooling tower.
Firstly, the operation rule and the control principle of a refrigerator controller of a refrigerator are as follows:
firstly, according to the outdoor environment temperature/humidity, presetting an outlet water temperature curve of a refrigerator, and automatically correcting the outlet water temperature of chilled water (the correction frequency is 1 time/30 min) which is required to be set by a host machine through monitoring and calculating the real-time heat load;
secondly, calculating the actual heat load according to the chilled water flow and the actual temperature difference of the outlet water and the return water, comparing the actual heat load with the unit load rate after the communication of the host, and determining the type and the number of the water chilling units to be started.
Secondly, controlling the frequency conversion of the refrigerating water pump:
(1) the control principle is as follows: the safety of the system operation is ensured through differential pressure control, and the energy-saving effect of the system operation is ensured through constant temperature difference control.
Firstly, according to the pressure difference and the flow which are the least unfavorable points of the actual measurement of the system (after the tail end hydraulic balance static adjustment is finished), the lowest circulating pressure difference of the chilled water is ensured to be used as a lower limit reference value (refrigeration safety frequency) of the output frequency of the frequency converter in the pressure difference adjustment.
Secondly, calculating the frequency to be output by the frequency converter according to the actual temperature difference of the outlet water and the return water of the chilled water, comparing the output frequency with the refrigeration safety frequency, and taking a large value. The rate of change of the output frequency does not exceed 1 Hz/min.
And thirdly, correcting according to the real-time temperature difference, wherein the correcting frequency is 1 time/15 min.
(2) The control flow chart is shown in fig. 5.
Thirdly, control logic of the cooling water pump:
(1) the control principle is as follows:
the safety of the system operation is ensured through differential pressure control, and the energy-saving effect of the system operation is ensured through constant temperature difference control. Unlike chilled water pump control, the control of the cooling water pump takes into account the control of the cooling water bypass valve in the transition season under low load conditions.
Firstly, according to the requirements for the operation safety of the main machine condenser and the main machine, the lowest flow of the cooling water pump is set and used as a lower limit reference value (refrigeration safety frequency) of the output frequency of the frequency converter in the pressure difference regulation.
Secondly, calculating the frequency to be output by the frequency converter according to the actual temperature difference of the outlet water and the return water of the chilled water, comparing the output frequency with the refrigeration safety frequency, and taking a large value. The rate of change of the output frequency does not exceed 1 Hz/min.
And thirdly, correcting according to the real-time temperature difference, wherein the correcting frequency is 1 time/20 min.
(2) The control flow chart is shown in fig. 6.
Control logic for cooling tower
(1) The control principle is as follows: the cooling water backwater is close to the temperature of the environmental wet bulb as much as possible by starting, stopping/frequency conversion of the number of the cooling tower fans and comprehensive control of electric regulating valves of all branches, so that the energy consumption of a host is reduced, and the overall energy-saving effect of the system is ensured.
Firstly, setting the number of starting units which is not lower than the number of main units according to the actually measured outlet and return water temperature of the cooling water of the system.
Secondly, the corresponding electric valves are adjusted according to the actual starting number, and the flow balance of the cooling towers in operation is ensured.
Judging whether the fan needs to be started or not according to the actual temperature of the outlet water and the return water of the cooling water, intelligently adjusting the running frequency of the corresponding fan according to the temperature difference of the outlet water and the return water, and adjusting the change rate of the output frequency to be not more than 1 Hz/min.
And fourthly, correcting according to the real-time cooling water temperature difference, wherein the correction frequency is 1 time/10 min.
(2) The control flow chart is shown in fig. 7.
(3) In consideration of distribution factors of a cooling tower electric control cabinet and a cooling station main control cabinet in actual projects, a cooling tower control system is designed into two modes of Warmland intelligent control and local automatic control, and the system setting is modified through a touch screen on a cooling tower controller.
Intelligent control of Warmland: controlled by a cold station main control cabinet (device), a collector or a cloud end; in this mode, the main control cabinet (device) of the cold station, the collector or the cloud end can send an instruction to the cooling tower intelligent control system through the communication port, and the cooling tower intelligent control system controls the cooling tower to operate according to the instruction.
Local automatic control: on the basis of partial projects, because the positions of the cooling tower and the main control cabinet of the cooling station are too far or other reasons exist, the cooling tower needs to be subjected to energy-saving control, the intelligent control system of the cooling tower can be arranged to be subjected to cost-based automatic control at the moment, and the intelligent controller of the cooling tower takes water as an information medium, analyzes the current running condition of the refrigerator and analyzes the current running condition of the refrigerator according to the actual working condition of the cooling tower.
To sum up, the utility model discloses following function has:
intelligent group control of the refrigerator: the method can automatically calculate the whole required refrigerating capacity according to the cold load demand, and set the number of running hosts and the load rate of each host so as to ensure that the hosts run in the highest efficiency section.
Intelligent compensation of environment: the refrigeration curve can be prefabricated, and automatic following and correction of the set temperature of the chilled water outlet can be realized according to the temperature/humidity of the outdoor environment.
Intelligent frequency conversion of the motor equipment: and controlling the real-time states of all power elements (a chilled water pump/a cooling water pump) and resistance adjusting elements (various electric valves).
Monitoring and controlling the power element: the system can monitor and calculate the real-time states of all power elements (freezing water pumps/cooling water pumps) and resistance adjusting elements (various electric valves), automatically set reasonable values according to load changes, and achieve the most energy-saving scientific operation mode.
Energy efficiency assessment of the system and the equipment: the energy efficiency evaluation of the whole refrigeration station and the sub-equipment can be realized, the prefabricated energy efficiency curve is subjected to comparison fitting, and the data evidence for further optimizing the energy-saving operation is provided.
Claims (9)
1. The utility model provides an intelligence cold station control system which characterized in that: the intelligent cooling tower frequency conversion controller comprises a main control cabinet of the cooling station, wherein the main control cabinet of the cooling station is respectively connected with an intelligent frequency conversion controller of a freezing water pump, an intelligent frequency conversion controller of a cooling water pump and an intelligent frequency conversion controller of a cooling tower through a system bus, the main control cabinet of the cooling station, the intelligent frequency conversion controller of the freezing water pump, the intelligent frequency conversion controller of the cooling water pump and the intelligent frequency conversion controller of the cooling tower are respectively provided with a corresponding control unit, one cooling tower is set as a main station controller by the intelligent frequency conversion controller of the cooling tower, other cooling towers are slave station controllers, and the operation of the slave station controllers is managed through the main.
2. The intelligent cold station control system of claim 1, wherein: the intelligent variable frequency controller of the refrigerating water pump is installed on a refrigerating pump branch line, the intelligent variable frequency controller of the cooling water pump is installed on a cooling pump branch line, and the intelligent variable frequency controller of the cooling tower is installed on a cooling tower branch line.
3. The intelligent cold station control system of claim 1, wherein: the cold station main control cabinet comprises a cold station main control cabinet control unit, a cold station main control cabinet detection unit and a cold station main control cabinet execution structure, wherein the cold station main control cabinet control unit is respectively connected with the cold station main control cabinet detection unit, the cold station main control cabinet execution structure, a freezing/cooling water pump intelligent frequency conversion controller, a cooling tower intelligent frequency conversion controller and a refrigerator controller of a refrigerator, the cold station main control cabinet detection unit is respectively connected with a freezing side water supply/return temperature/pressure sensor and a cooling side water inlet/outlet temperature/pressure sensor, and the cold station main control cabinet execution structure is connected with a refrigerator freezing/cooling side electric valve.
4. The intelligent cold station control system of claim 1, wherein: the intelligent variable frequency controller of the chilled water pump is provided with a control unit and a driving unit which correspond to each other, the control unit of the intelligent variable frequency controller of the chilled water pump is connected with the control unit of the main control cabinet of the cold station, the control unit of the intelligent variable frequency controller of the chilled water pump is connected with the driving unit of the intelligent variable frequency controller of the chilled water pump, and the driving unit of the intelligent variable frequency controller of the chilled water pump is connected with the chilled water pump.
5. The intelligent cold station control system of claim 1, wherein: the intelligent cooling water pump frequency conversion controller is provided with a control unit and a driving unit which correspond to each other, the control unit of the intelligent cooling water pump frequency conversion controller is connected with the control unit of the cold station main control cabinet, the control unit of the intelligent cooling water pump frequency conversion controller is connected with the driving unit of the intelligent cooling water pump frequency conversion controller, and the driving unit of the intelligent cooling water pump frequency conversion controller is connected with the cooling water pump.
6. The intelligent cold station control system of claim 1, wherein: in a cooling tower serving as a main station controller, a control unit of the intelligent frequency conversion controller of the cooling tower is respectively connected with a control unit of a main control cabinet of the cooling station, a slave station controller of the intelligent frequency conversion controller of the cooling tower, a driving unit of the intelligent frequency conversion controller of the cooling tower, a detection unit of the intelligent frequency conversion controller of the cooling tower and an execution mechanism of the intelligent frequency conversion controller of the cooling tower, the driving unit of the intelligent frequency conversion controller of the cooling tower is connected with a fan of the cooling tower, the detection unit of the intelligent frequency conversion controller of the cooling tower is connected with a temperature sensor, a humidity sensor and a pressure sensor in the cooling tower, and the execution mechanism of the intelligent frequency conversion controller of the cooling tower is connected with an electric valve of a water pipe of the cooling.
7. The intelligent cold station control system of claim 1, wherein: in a cooling tower serving as a slave station controller, a slave station controller of the cooling tower intelligent frequency conversion controller is respectively connected with a control unit of the cooling tower intelligent frequency conversion controller, a driving unit of the cooling tower intelligent frequency conversion controller, a detection unit of the cooling tower intelligent frequency conversion controller and an execution mechanism of the cooling tower intelligent frequency conversion controller, the driving unit of the cooling tower intelligent frequency conversion controller is connected with a cooling tower fan, the detection unit of the cooling tower intelligent frequency conversion controller is connected with a temperature sensor, a humidity sensor and a pressure sensor in the cooling tower, and the execution mechanism of the cooling tower intelligent frequency conversion controller is connected with an electric valve of a cooling tower water pipe.
8. The intelligent cold station control system of claim 3, wherein: the freezing side water supply/return temperature/pressure sensor is a freezing side water supply temperature sensor, a freezing side return temperature sensor, a freezing side water supply pressure sensor and a freezing side return pressure sensor; the cooling side inlet/outlet water temperature/pressure sensors are a cooling side water supply temperature sensor, a cooling side return water temperature sensor, a cooling side water supply pressure sensor and a cooling side return water pressure sensor; the electric valve at the freezing/cooling side of the refrigerator refers to the electric valve at the freezing side of the refrigerator and the electric valve at the cooling side of the refrigerator.
9. The intelligent cold station control system of claim 3, wherein: and the control unit of the main control cabinet of the cold station is connected with a human-computer interface.
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| CN202020775403.4U CN212132815U (en) | 2020-05-12 | 2020-05-12 | Intelligent cold station control system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112660409A (en) * | 2020-12-17 | 2021-04-16 | 威海广泰空港设备股份有限公司 | Enthalpy difference control method of airplane ground air conditioning system |
| CN113899065A (en) * | 2021-11-05 | 2022-01-07 | 侯霖智能工程有限公司 | Intelligent control system and control method for refrigerating room |
| CN114087912A (en) * | 2021-10-09 | 2022-02-25 | 葛洲坝宜城水泥有限公司 | Control method and system based on control cabinet and electronic equipment |
| WO2024179189A1 (en) * | 2023-02-28 | 2024-09-06 | 上海美控智慧建筑有限公司 | Air conditioner control system and hvac device |
-
2020
- 2020-05-12 CN CN202020775403.4U patent/CN212132815U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112660409A (en) * | 2020-12-17 | 2021-04-16 | 威海广泰空港设备股份有限公司 | Enthalpy difference control method of airplane ground air conditioning system |
| CN112660409B (en) * | 2020-12-17 | 2021-11-16 | 威海广泰空港设备股份有限公司 | Enthalpy difference control method of airplane ground air conditioning system |
| CN114087912A (en) * | 2021-10-09 | 2022-02-25 | 葛洲坝宜城水泥有限公司 | Control method and system based on control cabinet and electronic equipment |
| CN113899065A (en) * | 2021-11-05 | 2022-01-07 | 侯霖智能工程有限公司 | Intelligent control system and control method for refrigerating room |
| WO2024179189A1 (en) * | 2023-02-28 | 2024-09-06 | 上海美控智慧建筑有限公司 | Air conditioner control system and hvac device |
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