CN203443026U - Control system for ice storage refrigeration plant room - Google Patents

Control system for ice storage refrigeration plant room Download PDF

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Publication number
CN203443026U
CN203443026U CN201320355843.4U CN201320355843U CN203443026U CN 203443026 U CN203443026 U CN 203443026U CN 201320355843 U CN201320355843 U CN 201320355843U CN 203443026 U CN203443026 U CN 203443026U
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China
Prior art keywords
pipeline
refrigerating medium
control
ice
user
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CN201320355843.4U
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Chinese (zh)
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吕磊磊
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Shanghai Nengyu Science & Technology Development Co Ltd
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Shanghai Nengyu Science & Technology Development Co Ltd
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Abstract

The utility model relates to a refrigeration plant room control system, in particular to a control system for an ice storage refrigeration plant room. The control system for the ice storage refrigeration plant room comprises a user cooling water return pipeline, a refrigerating medium pipeline and a refrigerating source pipeline, wherein the user cooling water return pipeline is provided with a plate heat exchanger and is connected with the refrigerating medium pipeline through the plate heat exchanger; the refrigerating medium pipeline is provided with a double-working-condition heat exchange unit; the double-working-condition heat exchange unit is connected with the refrigerating source pipeline through the double-working-condition heat exchange unit; the user cooling water return pipeline is provided with a refrigerating unit and a cooling water pump; the refrigerating medium pipeline is provided with a refrigerating medium circulating pump; the refrigerating source pipeline is provided with a cooling tower and a cooling water pump. The control system for the ice storage refrigeration plant room can achieve efficient and energy-saving operation of the ice storage refrigeration plant room. Meanwhile, a refrigerating machine and various auxiliary devices can be adjusted and controlled excellently to help the refrigeration plant room operate under the optimum state, energy sources are saved, and the utilization rate of the energy sources is improved.

Description

A kind of ice cold-storage refrigerator room control system
Technical field
The utility model relates to a kind of refrigerator room control system, is specifically related to ice cold-storage refrigerator room control system.
Background technology
Ice storage technology is to utilize the ice making of night dip load electric power to be stored in ice storage unit, and ice-melt on daytime discharges stored cold, reduces electrical network air conditioning electricity peak period load and air-conditioning system installed capacity.
Existing ice cold-storage refrigerator room control system can only the long-range start and stop in order of control appliance, but in user side indoor temperature change generated in case, and during the variation for temperature-compensating demand causing, traditional ice cold-storage refrigerator room control system cannot meet the requirement of automatic energy saving control.On the basis of original ice cold-storage refrigerator room control system, having increased electrically operated valve, temperature sensor, pressure sensor, flow takes into account controller and realizes the economical operation of ice cold-storage refrigerator room efficient energy-saving and control, regulate the running status of each equipment to make whole system, realize and meet workload demand and energy-conservation optimal control object.
Summary of the invention
The problem existing for solving prior art, the utility model provides a kind of ice cold-storage refrigerator room control system.
The utility model is achieved through the following technical solutions: the utility model comprises user chilled(cooling) water return (CWR), refrigerating medium pipeline and refrigeration source pipeline; User chilled(cooling) water return (CWR) is provided with plate type heat exchanger, described user chilled(cooling) water return (CWR) is connected by plate type heat exchanger with refrigerating medium pipeline, Double-working-condition heat-exchanger is installed on refrigerating medium pipeline, Double-working-condition heat-exchanger is connected by Double-working-condition heat-exchanger with refrigeration source pipeline, and described user chilled(cooling) water return (CWR) is provided with refrigeration unit and cooling water pump; Described refrigerating medium pipeline is provided with refrigerating medium circulating pump; Refrigeration source pipeline is provided with cooling tower and cooling water pump; On refrigerating medium pipeline, the port of export pipeline of Double-working-condition heat-exchanger is provided with electrically operated valve V1, and electrically operated valve V1 two ends are also parallel with Ice Storage Tank, and the Ice Storage Tank port of export is provided with electrically operated valve V2, is also provided with flow regulator between Ice Storage Tank and plate type heat exchanger; The port of export of plate type heat exchanger and refrigeration unit water outlet end are respectively by electrically operated valve (V7a, V7b) enter user side water inlet, user side outlet pipeline is divided into two, one bye-pass is by electrically operated valve V6a connecting plate type heat exchanger, and another connects refrigeration unit by electrically operated valve V6b.
Further, described flow regulator comprises flow control valve V3 and controls the control valve V4 that refrigerating medium refluxes.
Further, described Double-working-condition heat-exchanger, cooling tower, cooling water pump, refrigerating medium circulating pump, refrigeration unit, electrically operated valve (V1, V2, V7a, V7b, V6a, V6b), flow control valve V3, control valve V4 are all electrically connected to PLC controller.
Further, described user side water inlet house steward is provided with temperature sensor, pressure sensor; Described temperature sensor, pressure sensor are electrically connected to PLC controller respectively.
Further, the house steward of described user side delivery port is provided with temperature sensor, pressure sensor and flowmeter; Described temperature sensor, pressure sensor and flowmeter are electrically connected to PLC controller.
Further, the house steward of described refrigerating medium circulating pump is provided with temperature sensor, and described temperature sensor is electrically connected to PLC controller.
Further, be provided with ice level sensor in described Ice Storage Tank, described ice level sensor is electrically connected to PLC controller.
Further, in described PLC controller, be provided with analog quantity control module.
The beneficial effects of the utility model are: the utility model can be realized the energy-efficient operation of refrigerator room.According to the Natrue Curve-natural curve of outdoor temperature sensor and refrigerator, gather historical data, prediction load, control Double-working-condition heat-exchanger ice-reserving amount, ice storage, control unlatching number of units and the operational mode of Double-working-condition heat-exchanger and refrigeration unit, as: Double-working-condition heat-exchanger ice-make mode at night, refrigeration unit operational mode, ice-melt and refrigeration unit be operational mode simultaneously, single ice-melt mode, the common refrigeration mode of Double-working-condition heat-exchanger and refrigeration unit, Double-working-condition heat-exchanger, refrigeration unit and the common operational mode of deicing device etc., in addition also carrying out the blower fan of cooling tower and the variable frequency adjustment of cooling water pump controls, image data, computational analysis end is loaded, and carries out the variable frequency adjustment of chilled water pump with control on demand principle.Realize the optimal adjustment of refrigeration unit and each auxiliary equipment and control, help refrigerator room to move in the best condition, save the energy and improve efficiency of energy utilization.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
In the drawings: 1-cooling tower; 2-cooling water pump; 3-Double-working-condition heat-exchanger; 4-refrigeration unit; 5-refrigerating medium circulating pump; 6-Ice Storage Tank; 7-cooling water pump; 8-end chilled water water collector; 9-end chilled water water knockout drum; 10-plate type heat exchanger.
The specific embodiment
As shown in Figure 1, the utility model comprises user chilled(cooling) water return (CWR), refrigerating medium pipeline and refrigeration source pipeline; User chilled(cooling) water return (CWR) is provided with plate type heat exchanger 10, described user chilled(cooling) water return (CWR) is connected by plate type heat exchanger 10 with refrigerating medium pipeline, Double-working-condition heat-exchanger 3 is installed on refrigerating medium pipeline, Double-working-condition heat-exchanger 3 is connected by Double-working-condition heat-exchanger 3 with refrigeration source pipeline, and described user chilled(cooling) water return (CWR) is provided with refrigeration unit 4 and cooling water pump 7; Described refrigerating medium pipeline is provided with refrigerating medium circulating pump 5; Refrigeration source pipeline is provided with cooling tower 1 and cooling water pump 2; On refrigerating medium pipeline, the port of export pipeline of Double-working-condition heat-exchanger 3 is provided with electrically operated valve V1, electrically operated valve V1 two ends are also parallel with Ice Storage Tank 6, Ice Storage Tank 6 ports of export are provided with electrically operated valve V2, between Ice Storage Tank 6 and plate type heat exchanger 10, are also provided with flow regulator; The port of export of plate type heat exchanger 10 and refrigeration unit 4 water outlet ends are respectively by electrically operated valve (V7a, V7b) enter user side water inlet, user side outlet pipeline is divided into two, one bye-pass is by electrically operated valve V6a connecting plate type heat exchanger 10, and another connects refrigeration unit 4 by electrically operated valve V6b.
Further, described flow regulator comprises flow control valve V3 and controls the control valve V4 that refrigerating medium refluxes.
Further, described Double-working-condition heat-exchanger 3, cooling tower 1, cooling water pump (2,7), refrigerating medium circulating pump 5, refrigeration unit 4, electrically operated valve (V1, V2, V7a, V7b, V6a, V6b), flow control valve V3, control valve V4 are all electrically connected to PLC controller.
Further, described user side water inlet is provided with end chilled water water knockout drum 9, and the house steward of end chilled water water knockout drum 9 front portions is provided with temperature sensor, pressure sensor; Described temperature sensor, pressure sensor are electrically connected to PLC controller respectively.
Further, described user side delivery port is provided with end chilled water water collector 8, and the house steward of end chilled water water collector 8 front portions is provided with temperature sensor, pressure sensor and flowmeter; Described temperature sensor, pressure sensor and flowmeter are electrically connected to PLC controller.
Further, the house steward of described refrigerating medium circulating pump 5 is provided with temperature sensor, and described temperature sensor is electrically connected to PLC controller.
Further, in described Ice Storage Tank 6, be provided with ice level sensor, described ice level sensor is electrically connected to PLC controller.
Further, in described PLC controller, be provided with analog quantity control module.
The utility model adopts decentralised control, and the principle of centralized management is efficiently controlled refrigerator room.PLC is to refrigeration unit 4, and the temperature of cooling water pump (2,7) and flow etc. are monitored, and according to refrigeration, the ice-make mode of host computer load prediction results monitoring Double-working-condition heat-exchanger 3; Monitoring Ice Storage Tank 6 ice storages; The data that control collects are passed through configuration in TCP/IP correspondence tray, can monitoring site all devices and system information by host computer to host computer.
Control principle:
Boot sequence: Double-working-condition heat-exchanger 3 terminal valves-cooling tower 1-cooling water pump 2-refrigerating medium circulating pump 5-cooling water pump 7-refrigeration unit 4;
Closing sequence: refrigeration unit 4-cooling water pump 7-refrigerating medium circulating pump 5-cooling water pump 2-cooling tower 1-Double-working-condition heat-exchanger 3 terminal valves;
Boot sequence: refrigeration unit 4 terminal valves-cooling tower 1-cooling water pump 2-cooling water pump 7-refrigeration unit 4;
Closing sequence: refrigeration unit 4-cooling water pump 7-cooling water pump 2-cooling tower 1-refrigeration unit 4 terminal valves.
This system fully automatic operation, each equipment is according to the chain control of start and stop order, and refrigeration unit 4 and cooling water pump (2,7) and cooling tower 1 be corresponding design one by one.
Rotation program capital equipment each other standby, fault throw mutually, timing rotation, FIFO, thereby extension device service life.Rotation program is for refrigeration unit 4, cooling water pump (2,7), refrigerating medium circulating pump 5.
On the house steward of end chilled water water collector 8, temperature sensor is installed, Real-time Collection supply and return water temperature data, and transfer to PLC controller calculating supply backwater temperature difference.Ice cold-storage refrigerator room control system need to be predicted and loads and calculate Real-time Load, adjust unit load, operation number of units, Ice Storage Tank 6 ice storages simultaneously in conjunction with Nature Curve-natural curve principle and control on demand principle.
Cooling water pump 7 end workload demands, control on demand principle is carried out regulating frequency.
On the house steward of refrigeration source pipeline, water pipe temperature sensor is installed, Real-time Collection supply and return water temperature data, and transfer to PLC controller calculating supply backwater temperature difference, PLC controller is according to temperature difference PID s operation control cooling water pump 2 running frequencies.
Cooling water pump (2,7) is controlled its frequency according to Nature Curve-natural curve principle.
Running status, the malfunction of Real-Time Monitoring refrigeration unit 4, cooling tower 1, cooling water pump 2, refrigerating medium circulating pump 5 and cooling water pump 7 also reported to the police.
According to the above description, in conjunction with art technology, can realize scheme of the present utility model.

Claims (8)

1. an ice cold-storage refrigerator room control system, comprises user chilled(cooling) water return (CWR), refrigerating medium pipeline and refrigeration source pipeline; User chilled(cooling) water return (CWR) is provided with plate type heat exchanger, described user chilled(cooling) water return (CWR) is connected by plate type heat exchanger with refrigerating medium pipeline, Double-working-condition heat-exchanger is installed on refrigerating medium pipeline, Double-working-condition heat-exchanger is connected by Double-working-condition heat-exchanger with refrigeration source pipeline, and described user chilled(cooling) water return (CWR) is provided with refrigeration unit and cooling water pump; Described refrigerating medium pipeline is provided with refrigerating medium circulating pump; Refrigeration source pipeline is provided with cooling tower and cooling water pump; It is characterized in that, on refrigerating medium pipeline, the port of export pipeline of Double-working-condition heat-exchanger is provided with electrically operated valve (V1), electrically operated valve (V1) two ends are also parallel with Ice Storage Tank, and the Ice Storage Tank port of export is provided with electrically operated valve (V2), are also provided with flow regulator between Ice Storage Tank and plate type heat exchanger; The port of export of plate type heat exchanger and refrigeration unit water outlet end are respectively by electrically operated valve (V7a, V7b) enter user side water inlet, user side outlet pipeline is divided into two, one bye-pass is by electrically operated valve (V6a) connecting plate type heat exchanger, and another connects refrigeration unit by electrically operated valve (V6b).
2. ice cold-storage refrigerator room control system according to claim 1, is characterized in that, described flow regulator comprises flow control valve (V3) and controls the control valve (V4) that refrigerating medium refluxes.
3. ice cold-storage refrigerator room control system according to claim 2, it is characterized in that, described Double-working-condition heat-exchanger, cooling tower, cooling water pump, refrigerating medium circulating pump, refrigeration unit, electrically operated valve (V1, V2, V7a, V7b, V6a, V6b), flow control valve (V3), control valve (V4) are all electrically connected to PLC controller.
4. ice cold-storage refrigerator room control system according to claim 1, is characterized in that, described user side water inlet house steward is provided with temperature sensor, pressure sensor; Described temperature sensor, pressure sensor are electrically connected to PLC controller respectively.
5. ice cold-storage refrigerator room control system according to claim 1, is characterized in that, the house steward of described user side delivery port is provided with temperature sensor, pressure sensor and flowmeter; Described temperature sensor, pressure sensor and flowmeter are electrically connected to PLC controller.
6. ice cold-storage refrigerator room control system according to claim 1, is characterized in that, the house steward of described refrigerating medium circulating pump is provided with temperature sensor, and described temperature sensor is electrically connected to PLC controller.
7. ice cold-storage refrigerator room control system according to claim 1, is characterized in that, in described Ice Storage Tank, be provided with ice level sensor, described ice level sensor is electrically connected to PLC controller.
8. according to the ice cold-storage refrigerator room control system described in any one in claim 3 to 7, it is characterized in that, in described PLC controller, be provided with analog quantity control module.
CN201320355843.4U 2013-06-21 2013-06-21 Control system for ice storage refrigeration plant room Active CN203443026U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201320355843.4U CN203443026U (en) 2013-06-21 2013-06-21 Control system for ice storage refrigeration plant room

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201320355843.4U CN203443026U (en) 2013-06-21 2013-06-21 Control system for ice storage refrigeration plant room

Publications (1)

Publication Number Publication Date
CN203443026U true CN203443026U (en) 2014-02-19

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CN201320355843.4U Active CN203443026U (en) 2013-06-21 2013-06-21 Control system for ice storage refrigeration plant room

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110486896A (en) * 2019-07-25 2019-11-22 南京南瑞继保工程技术有限公司 A kind of tandem air-conditioning system optimal control method based on water cooler energy consumption model

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110486896A (en) * 2019-07-25 2019-11-22 南京南瑞继保工程技术有限公司 A kind of tandem air-conditioning system optimal control method based on water cooler energy consumption model

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