CN105387546A - Integrated double-source freezing station and refrigerating method - Google Patents

Integrated double-source freezing station and refrigerating method Download PDF

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Publication number
CN105387546A
CN105387546A CN201510933177.1A CN201510933177A CN105387546A CN 105387546 A CN105387546 A CN 105387546A CN 201510933177 A CN201510933177 A CN 201510933177A CN 105387546 A CN105387546 A CN 105387546A
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China
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water
cooling
cooling tower
heat exchanger
main unit
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CN201510933177.1A
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CN105387546B (en
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孙小琴
廖曙光
杨志新
周祺
柴宁
刘杰宏
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Changsha Mai Rong High-Tech Ltd Co
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Changsha Mai Rong High-Tech Ltd Co
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F5/00Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
    • F24F5/0003Exclusively-fluid systems

Abstract

The invention discloses an integrated double-source freezing station and a refrigerating method. The integrated double-source freezing station comprises a water cooling unit (1), an intermediate heat exchanger (10), a cooling water system, a freezing water system and a control system, wherein the water cooling unit is arranged between the cooling water system and the freezing water system; the intermediate heat exchanger and the water cooling unit share water supplying and returning pipelines of the cooling water system and the freezing water system; the water cooling unit, the intermediate heat exchanger, the cooling water system, the freezing water system and a three-way valve are controlled by the control system; the cooling water system comprises a cooling tower (3), and a cooling water pump (2) which is arranged on a water outlet pipeline of the cooling tower; the freezing water system comprises a freezing water pump (11), a constant-pressure expansion tank (13) and an incrustation cleaner (13) which are sequentially arranged on a water supplying pipeline of the freezing water system along the water supplying direction. The integrated double-source freezing station and the refrigerating method are easy to implement, and obvious in energy saving effect.

Description

A kind of integrated double source refrigeration station and refrigerating method
Technical field
The present invention relates to a kind of integrated double source refrigeration station and refrigerating method.
Background technology
Along with the develop rapidly of China's Telecommunication's cause and the continuous expansion of communication network scale, the electric cost of communication enterprise is also constantly going up.2015, under Macro-economic situation entirety recovery improvements, information communication demand continue the general trend of events expanded, along with implementing of the industrial policies such as information consumption, broadband strategy, 4G comprehensively, ICT industry is expected to continue the very fast developing state of held stationary, estimate that overall speedup will more than 10%, wherein basic telecommunication industry increases about 8%, and increment internet arena speedup is more than 30%, and overall market income scale is more than 1.6 trillion yuan.For ensureing the flourish of the communication technology, all kinds of Special machine room construction is multiplied, machine room power consumption is constantly soaring, power equipment can't bear the heavy load, energy starved situation is appeared suddenly, to have in some area power cuts to limit consumption, have impact on the fast development of national economy, machine room economize on electricity becomes the task of top priority.
At present, the power save mode that machine room is commonly used is the energy consumption adopting natural cooling source to reduce air-conditioning in machine room, mainly contains and directly introduces fresh air energy-saving system, board-like isolated air heat-exchange system.Although direct introducing new wind formula energy conserving system structure is simple, small volume, needs frequently to change filter, costly, and can't ensure the humidity requirement in machine room; Board-like isolated air heat-exchange system due to unit heat exchange amount less, therefore volume is comparatively large, mainly applies to the machine room that space is larger; And these two kinds of modes are the former air-conditioned supplementary of machine room, the cooperation of conventional refrigeration air-conditioning is needed to run.
Find out from above scheme, the utilization of natural cooling source can reduce the energy consumption of communications equipment room air-conditioning system, but needs original air-conditioning to coordinate, and cannot substitute original air-conditioning completely.
In addition, also have the occasion needing to ensure low temperature of other some high power consumptions, as fresh-keeping warehouse etc., also need novel refrigeration system to save energy consumption.
Therefore, a kind of novel refrigeration station of design and refrigerating method is necessary.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of integrated double source refrigeration station and refrigerating method, this integrated double source refrigeration station and refrigerating method easy to implement, energy-saving effect is remarkable.
The technical solution of invention is as follows:
A kind of integrated double source refrigeration station, comprises cold water main unit (1), Intermediate Heat Exchanger (10), cooling water system, chilled water system and control system; The temperature sensor being integrated with controller in control system and being connected with controller;
Cold water main unit is arranged on cooling water system and unifies between chilled water system;
Described Intermediate Heat Exchanger and cold water main unit are in parallel by triple valve, and Intermediate Heat Exchanger and cold water main unit share cooling water system and to unify the confession water return pipeline of chilled water system;
Cold water main unit, cooling water system, chilled water system and triple valve are all controlled by control system; [Intermediate Heat Exchanger is a heat exchanger, and the inside does not have running gear, so do not need to control, as long as triple valve controls to switch]
Cooling water system comprises cooling tower (3) and is arranged on the cooling water pump (2) on cooling tower outlet pipeline;
Chilled water system comprises chilled water pump (11), level pressure expansion drum (12) and descaler (13); Chilled water pump, level pressure expansion drum and descaler are successively set on the supply channel of chilled water system by water supply direction.
[effect of level pressure expansion drum: 1, level pressure, when system is out of service, prevents the aqueous reflux in pipeline from impacting water pump; 2, expand, the gas that suction line system expands.】
Described cooling tower comprises condensation fan (9), water-locator (8), spray equipment (7) and packing layer (6); Cooling tower is provided with air inlet (5); Condensation fan, water-locator, spray equipment, packing layer and air inlet are arranged from top to bottom successively; Water-locator is connected with spray equipment.
Apparatus for eliminating sludge is provided with bottom cooling tower.
Cold water main unit adopts screw cold water main unit, vortex cold water main unit;
Described Intermediate Heat Exchanger is plate type heat exchanger or shell and tube exchanger;
Cooling water pump adopts vane type oil pump, positive displacement pump or jet pump;
Cooling tower adopts open cooling tower;
Chilled water pump adopts vane type oil pump, positive displacement pump or jet pump;
Level pressure expansion drum adopts bellows Constant pressure tank or diaphragm type Constant pressure tank;
Descaler adopts electronic scale remover.
Described condensation fan (9) adopts axial flow blower;
Filler in packing layer adopts the wrong filler of S ripple filler, oblique, step Trapezium oblique wave filler, the sinusoidal wave filler of difference position formula, some ripple filler, hexagon cellular filler, two-way ripple filler or bias ripple filler.
Set temperature control point T1 and T2; And T1 > T2; T1 is a certain value in 15-25 DEG C; T2 is a certain value in-2 ~ 2 DEG C;
(1) when outdoor temperature is greater than T1, open cold water main unit and cooling tower, now cooling water circulates between cold water main unit and cooling tower; [when all cooling water system changes, chilled water system is all work.] [now, by the setting of triple valve, refrigerated module and Intermediate Heat Exchanger be connecting system (namely not participating in work) not]
(2) when outdoor temperature is greater than T2 and be less than or equal to T1, close cold water main unit, open cooling tower and Intermediate Heat Exchanger, now cooling water circulates between Intermediate Heat Exchanger and cooling tower; The recirculated cooling water in cooling tower is utilized to provide cold for Intermediate Heat Exchanger; Condensation fan opens [now, by the setting of triple valve, refrigerated module and cold water main unit be connecting system (namely not participating in work) not];
(3) when outdoor environment temperature is less than or equal to T2, close the blower fan of cold water main unit and cooling tower, open spray equipment and the Intermediate Heat Exchanger of cooling tower, now cooling water circulates between Intermediate Heat Exchanger and cooling tower, and condensation fan is closed.[now, by the setting of triple valve, refrigerated module and cold water main unit be connecting system (namely not participating in work) not]
[as preferably, T1 and T2 is respectively 20 DEG C and 0 DEG C.】
Described integrated double source refrigeration station also comprises refrigerated module (19); Refrigerated module is connected with the water return pipeline that supplies of chilled water system by valve; Refrigerated module is controlled by control system; Refrigerated module is wind-water-to-water heat exchanger, is chilled water cooling in chilled water system for adopting outdoor air; Blower fan [for accelerating heat exchange] is provided with in refrigerated module
When outdoor environment temperature is less than or equal to T3, close cold water main unit and cooling tower, open refrigerated module, now no-cooling-water circulation; T3 is a certain temperature value in-8 ~-12 DEG C; [preferred value is-10 DEG C] [now, by setting of triple valve, Intermediate Heat Exchanger and main frame and cooling tower not connecting system (namely not participating in work)]
Based on the refrigerating method that double source is cold, aforesaid integrated double source refrigeration station is adopted to implement refrigeration; Control method is as follows:
Set temperature control point T1 and T2; And T1 > T2; T1 is a certain value in 15-25 DEG C; T2 is a certain value in-2 ~ 2 DEG C;
(1) when outdoor temperature is greater than T1, open cold water main unit and cooling tower, now cooling water circulates between cold water main unit and cooling tower; [now, by the setting of triple valve, refrigerated module and Intermediate Heat Exchanger be connecting system (namely not participating in work) not]
(2) when outdoor temperature is greater than T2 and be less than or equal to T1, close cold water main unit, open cooling tower and Intermediate Heat Exchanger, now cooling water circulates between Intermediate Heat Exchanger and cooling tower; The recirculated cooling water in cooling tower is utilized to provide cold for Intermediate Heat Exchanger; Condensation fan opens [now, by the setting of triple valve, refrigerated module and cold water main unit be connecting system (namely not participating in work) not];
(3) when outdoor environment temperature is less than or equal to T2, close the blower fan of cold water main unit and cooling tower, open spray equipment and the Intermediate Heat Exchanger of cooling tower, now cooling water circulates between Intermediate Heat Exchanger and cooling tower, and condensation fan is closed.[now, by the setting of triple valve, refrigerated module and cold water main unit be connecting system (namely not participating in work) not]
[as preferably, T1 and T2 is respectively 20 DEG C and 0 DEG C.】
Integration double source refrigeration station also comprises refrigerated module (19); Refrigerated module is connected with the water return pipeline that supplies of chilled water system by valve; Refrigerated module is controlled by control system; Refrigerated module is wind-water-to-water heat exchanger, is chilled water cooling in chilled water system for adopting outdoor air; Blower fan is provided with in refrigerated module;
When outdoor environment temperature is less than or equal to T3, close cold water main unit and cooling tower, open refrigerated module, now no-cooling-water circulation; T3 is a certain temperature value in-8 ~-12 DEG C; [preferred value is-10 DEG C] [now, by setting of triple valve, Intermediate Heat Exchanger and main frame and cooling tower not connecting system (namely not participating in work)]
Feature of the present invention is, Intermediate Heat Exchanger and cold water main unit share cooling water and chilled water supplies water return pipeline; Described cold water main unit and Intermediate Heat Exchanger are by three-way valve switchover operation; Described control system comprises temperature sensor and control logic; Described cold water main unit, Intermediate Heat Exchanger, cooling water system chilled water system of unifying all is encapsulated in a module, only stays outside connecting leg interface.
Described Intermediate Heat Exchanger and cold water main unit share cooling water and chilled water supplies water return pipeline, according to outdoor temperature humidity ambient parameter by triple valve switchover operation.
See Fig. 1--Fig. 3, this integrated double source refrigeration station comprises cold water main unit (1) (producing the main frame of chilled water), Intermediate Heat Exchanger (10), cooling water system, chilled water system and related Control System.Described cooling water system comprises cooling water pump (2), cooling tower (3); Described chilled water system comprises chilled water pump (11), level pressure expansion drum (12), descaler (13); Described cooling tower comprises condensation fan (9), water-locator (8), spray equipment (7), filler (6), air inlet (5) and apparatus for eliminating sludge (4);
Described Intermediate Heat Exchanger and cold water main unit share cooling water and chilled water supplies water return pipeline; Described cold water main unit and Intermediate Heat Exchanger are by three-way valve switchover operation; Described control system comprises temperature sensor and controller; Described cold water main unit, Intermediate Heat Exchanger, cooling water system chilled water system of unifying all is encapsulated in a module, only stays outside connecting leg interface.Described cold water main unit (1) adopts screw cold water main unit, vortex cold water main unit.Described Intermediate Heat Exchanger (10) is plate type heat exchanger or shell and tube exchanger.Described Intermediate Heat Exchanger (10) and cold water main unit (1) share cooling water and chilled water supplies water return pipeline, according to outdoor temperature humidity ambient parameter by triple valve switchover operation.Described refrigerated module (19) and Intermediate Heat Exchanger (10), cold water main unit (1) share chilled water for water return pipeline.Described cooling water pump (2) adopts vane type oil pump, positive displacement pump or jet pump.Described cooling tower (3) adopts and begins to cool down tower.Described chilled water pump (11) adopts vane type oil pump, positive displacement pump or jet pump.Described level pressure expansion drum (12) adopts bellows Constant pressure tank, diaphragm type Constant pressure tank.Described descaler (13) adopts electronic scale remover.Described condensation fan (9) adopts axial flow blower.Described filler (6) adopts the wrong filler of S ripple filler, oblique, step Trapezium oblique wave filler, the sinusoidal wave filler of difference position formula, some ripple filler, hexagon cellular filler, two-way ripple filler or bias ripple filler, and filler adopts polyvinyl chloride (PVC) or polypropylene (PP) material.Described control system comprises temperature sensor and controller (as single-chip microcomputer, DSP etc.).
The work operating mode of patent of the present invention is divided into four kinds, is respectively cold water main unit cooling condition, cooling tower cooling condition 1, cooling tower cooling condition 2 and refrigerated module cooling condition.
Cold water main unit cooling condition: when outdoor is without available low temperature cold source, namely when outdoor temperature is greater than 20 DEG C, cold water main unit is adopted to be the low-temperature receiver that machine room freezes, the chilled water that cold water main unit produces can directly supply in machine room, or by coolant distributor, cold is passed to intermediary, taken away the heat in machine room by the circulation of chilled water or intermediary (as freon), the chilled water after heat absorption gets back to cold water main unit cooling, completes a circulation; The condensation side of cold water main unit adopts water quench, and cooling water enters the air heat-exchange of cooling tower spray system and air inlet introducing after absorbing heat, reduce the temperature of cooling water, gets back to cold water main unit circulation.Cold water main unit mainly comprises compressor, condenser, energy saver and evaporator series composition, and freon, at this four large parts Inner eycle, completes process of refrigerastion.Concrete refrigeration principle is as follows: adopt steam compression type refrigeration mode, the heat of vaporization of liquid refrigerant in evaporimeter in absorption refrigerating water, cold-producing medium after evaporation enters condenser after compressing in compressor, high-temperature high-pressure refrigerant in condenser enters throttling arrangement after cooling water temperature, cold-producing medium out becomes low-temp low-pressure liquid refrigerant afterwards after energy saver, enter evaporimeter, complete kind of refrigeration cycle.
Cooling tower cooling condition 1: adopt outdoor low temperature cold source to be cooling in machine room, during transition season (outdoor environment temperature is greater than 0 DEG C and is less than or equal to 20 DEG C), outdoor environment temperature is lower, the recirculated cooling water in cooling tower is directly utilized to provide cold for Intermediate Heat Exchanger, reduce the water temperature of Intermediate Heat Exchanger chilled water side, chilled water can directly supply in machine room, or by coolant distributor, cold is passed to intermediary, the heat in machine room is taken away by the circulation of chilled water or intermediary, chilled water after heat absorption gets back to Intermediate Heat Exchanger cooling, completes a circulation.Cooling water enters the air heat-exchange of cooling tower spray system and air inlet introducing after absorbing the heat in machine room, reduce the temperature of cooling water, gets back to Intermediate Heat Exchanger circulation.
Cooling tower cooling condition 2: adopt outdoor low temperature cold source to be cooling in machine room, during winter (outdoor environment temperature is less than or equal to 0 DEG C), outdoor environment temperature is lower, the recirculated cooling water in cooling tower is directly utilized to provide cold for Intermediate Heat Exchanger, reduce the water temperature of Intermediate Heat Exchanger chilled water side, chilled water can directly supply in machine room, or by coolant distributor, cold is passed to intermediary, the heat in machine room is taken away by the circulation of chilled water or intermediary, chilled water after heat absorption gets back to Intermediate Heat Exchanger cooling, completes a circulation.Cooling water enters cooling tower spray system after absorbing the heat in machine room, and now for avoiding excessive drop temperature condensation fan to close, cooling water reduces temperature by the flowing of self, gets back to Intermediate Heat Exchanger circulation.The difference of cooling tower cooling condition 1 and operating mode 2 is exactly the last word of this section, and for avoiding excessive drop temperature condensation fan to close, cooling water reduces temperature by the flowing of self, gets back to Intermediate Heat Exchanger circulation.Operating mode 2 is the machines that do not blow in.
Refrigerated module cooling condition: adopt outdoor low temperature cold source to be cooling in machine room, during winter (outdoor environment temperature is less than or equal to-10 DEG C), for avoiding freezing of cooling tower place, cut off cooling tower, Intermediate Heat Exchanger and cold water main unit, adopt refrigerated module, i.e. wind-water-to-water heat exchanger, directly outdoor cold air is utilized to lower the temperature for chilled water, blower fan is had in refrigerated module, chilled water can directly supply in machine room, or by coolant distributor, cold is passed to intermediary, the heat in machine room is taken away by the circulation of chilled water or intermediary, chilled water after heat absorption gets back to Intermediate Heat Exchanger cooling, complete a circulation.
Control logic between each operating mode is as follows:
When outdoor temperature is greater than 20 DEG C, open cold water main unit and cooling tower, now cooling water circulates between cold water main unit and cooling tower; When outdoor temperature be greater than 0 DEG C be less than or equal to 20 DEG C time, close cold water main unit, open cooling tower and Intermediate Heat Exchanger, now cooling water circulates between Intermediate Heat Exchanger and cooling tower; When outdoor environment temperature is less than or equal to 0 DEG C, close the blower fan of cold water main unit and cooling tower, open spray equipment and the Intermediate Heat Exchanger of cooling tower, now cooling water circulates between Intermediate Heat Exchanger and cooling tower; When outdoor environment temperature is less than or equal to-10 DEG C, close cold water main unit and cooling tower, open refrigerated module, now no-cooling-water circulation.
The natural cold quantity that patent of the present invention directly utilizes occurring in nature abundant is the cooling of machine room electronic equipment, and this refrigeration station free of discontinuities in a year 365 days provides low-temperature receiver for machine room, can substitute traditional air conditioner completely.During outdoor high temperature, adopt handpiece Water Chilling Units to provide chilled water for machine room, wherein handpiece Water Chilling Units adopts cooling water temperature, can provide efficiency more than 30% relative to cooling by wind; When outdoor temperature is lower, directly utilizes natural cooling source to lower the temperature for machine room by cooling tower or refrigerated module, now without the need to opening handpiece Water Chilling Units, greatly reducing energy consumption for cooling.Patent of the present invention increases Intermediate Heat Exchanger and refrigerated module on the basis of conventional refrigeration, makes full use of the outdoor low temperature cold source in transition season and winter, reduces the running time of cold water main unit, reduces the energy consumption of refrigeration system; This system can make up the problem that winter, conventional refrigeration was shut down without defence program during high-low pressure because of compressor simultaneously, ensures the refrigeration capacity requirement of machine room.
The outlet side of chilled water system is (namely between the chilled water feed water inlet [outlet side of chilled water pump] of chilled water system and water return outlet, as shown in Figure 1) be provided with bypass branch, bypass branch is serially connected with by-passing valve, bypass branch is in parallel with the connection side of chilled water system with Intermediate Heat Exchanger, and bypass branch is in parallel with the connection side of chilled water system with cold water main unit in other words; [in other words, bypass branch is in parallel with refrigerated module ,] by-passing valve effect is remarkable, mainly regulate the temperature of chilled water, if the load in machine room is little, then partial freeze water backwater does not enter handpiece Water Chilling Units, directly through by-passing valve (bypass branch) in chilled water water supply conduit.
For chilled water system provides chilled water to be prior art.Such as supplied water by coolant distributor, and coolant distributor obtains chilled water from refrigeration terminal.
Beneficial effect:
Integrated double source refrigeration station of the present invention and refrigerating method, Intermediate Heat Exchanger and cold water main unit share cooling water and chilled water supplies water return pipeline; Described cold water main unit and Intermediate Heat Exchanger are based on outdoor temperature and by three-way valve switchover operation; Described control system comprises temperature sensor and controller.This patent of invention increases Intermediate Heat Exchanger and refrigerated module on the basis of conventional refrigeration, makes full use of the outdoor low temperature cold source in transition season and winter, reduces the running time of compressor, reduces the energy consumption of refrigeration system; This system can make up the problem that winter, conventional refrigeration was shut down without defence program during high-low pressure because of compressor simultaneously, ensures the refrigeration capacity requirement of machine room.
Patent of the present invention compared with prior art, has significant energy-saving effect.The natural cold quantity that a kind of integrated double source refrigeration station utilizes cold water main unit and occurring in nature to enrich is the cooling of machine room electronic equipment, and outdoor cold air does not directly enter machine room, ensures the purity requirements in machine room; Patent of the present invention increases Intermediate Heat Exchanger on the basis of traditional cold water main unit refrigeration system, makes full use of the outdoor low temperature cold source in transition season and winter, reduces the running time of cold water main unit, reduces the energy consumption of refrigeration system; Cold water main unit adopts cooling water system to reach the effect of condensation, improves efficiency more than 30% than traditional air cooling system; This system can make up the problem that winter, conventional refrigeration was shut down without defence program during high-low pressure because of compressor simultaneously, ensures the refrigeration capacity requirement of machine room.In addition, this integrated double source refrigeration station provides low-temperature receiver for end refrigeration system in machine room, and traditional refrigeration system can be replaced completely to run.
Patent of the present invention can realize the refrigeration cool-down in machine room in annual scope, overcomes the shortcoming that conventional refrigeration cannot utilize natural cooling source, and avoiding VMC and air heat-exchange system in air conditioner energy-saving system cannot the shortcoming of whole year operation; The Shuan Leng refrigeration station system adopted, cooling when wherein cold water main unit system is for meeting outdoor high temperature in machine room, and adopt cooling water circulation to take away condensation heat extraction, improve the operating efficiency of cold water main unit; Cooling when Intermediate Heat Exchanger system meets outdoor low temperature in machine room and energy-conservation, is directly adopted with excessive season cooling tower to be low-temperature receiver in the winter time, is taken away the heat in machine room by Intermediate Heat Exchanger.
Two low-temperature receiver refers to the type of cooling of chilled water, i.e. air-source and water source, both with the outdoor cold air in winter, can cool again with the cold water of outdoor cold water or freezing unit.
Accompanying drawing explanation
Fig. 1 is the exchange schematic diagram of patent of the present invention;
Fig. 2 is the cold water main unit fundamental diagram of patent of the present invention.
Fig. 3 is the cooling tower fundamental diagram of patent of the present invention.
Fig. 4 integrated double source refrigeration station refrigerated module fundamental diagram.
Label declaration: 1-cold water main unit, 2-cooling water pump, 3-cooling tower, 4-apparatus for eliminating sludge, 5-air inlet, 6-packing layer, 7-spray equipment, 8-water-locator, 9-condensation fan, 10-Intermediate Heat Exchanger; 11-chilled water pump, 12-level pressure expansion drum, 13-descaler, 14-by-passing valve; 19-refrigerated module.
Detailed description of the invention
Below with reference to the drawings and specific embodiments, the present invention is described in further details:
Embodiment 1:
As Fig. 1-4, a kind of integrated double source refrigeration station, comprises cold water main unit (1), Intermediate Heat Exchanger (10), cooling water system, chilled water system, refrigerated module (19) and control system; The temperature sensor being integrated with controller in control system and being connected with controller;
Refrigerated module is connected with the water return pipeline that supplies of chilled water system by valve; Refrigerated module is controlled by control system; Refrigerated module is wind-water-to-water heat exchanger, is chilled water cooling in chilled water system for adopting outdoor air; Blower fan [for accelerating heat exchange] is provided with in refrigerated module; Bypass branch is in parallel with refrigerated module; Bypass branch is serially connected with by-passing valve 14;
Cold water main unit is arranged on cooling water system and unifies between chilled water system;
Described Intermediate Heat Exchanger and cold water main unit are in parallel by triple valve, and Intermediate Heat Exchanger and cold water main unit share cooling water system and to unify the confession water return pipeline of chilled water system;
Cold water main unit, cooling water system, chilled water system and triple valve are all controlled by control system; [Intermediate Heat Exchanger is a heat exchanger, and the inside does not have running gear, so do not need to control, as long as triple valve controls to switch]
Cooling water system comprises cooling tower (3) and is arranged on the cooling water pump (2) on cooling tower outlet pipeline;
Chilled water system comprises chilled water pump (11), level pressure expansion drum (12) and descaler (13); Chilled water pump, level pressure expansion drum and descaler are successively set on the supply channel of chilled water system by water supply direction.
[effect of level pressure expansion drum: 1, level pressure, when system is out of service, prevents the aqueous reflux in pipeline from impacting water pump; 2, expand, the gas that suction line system expands.】
Described cooling tower comprises condensation fan (9), water-locator (8), spray equipment (7) and packing layer (6); Cooling tower is provided with air inlet (5); Condensation fan, water-locator, spray equipment, packing layer and air inlet are arranged from top to bottom successively; Water-locator is connected with spray equipment.
Apparatus for eliminating sludge is provided with bottom cooling tower.
Cold water main unit adopts screw cold water main unit, vortex cold water main unit;
Described Intermediate Heat Exchanger is plate type heat exchanger or shell and tube exchanger;
Cooling water pump adopts vane type oil pump, positive displacement pump or jet pump;
Cooling tower adopts open cooling tower;
Chilled water pump adopts vane type oil pump, positive displacement pump or jet pump;
Level pressure expansion drum adopts bellows Constant pressure tank or diaphragm type Constant pressure tank;
Descaler adopts electronic scale remover.
Described condensation fan (9) adopts axial flow blower;
Filler in packing layer adopts the wrong filler of S ripple filler, oblique, step Trapezium oblique wave filler, the sinusoidal wave filler of difference position formula, some ripple filler, hexagon cellular filler, two-way ripple filler or bias ripple filler.
Set temperature control point T1 and T2; T1 and T2 is respectively 20 DEG C and 0 DEG C.
(1) when outdoor temperature is greater than T1, open cold water main unit and cooling tower, now cooling water circulates between cold water main unit and cooling tower; [when all cooling water system changes, chilled water system is all work.] [now, by the setting of triple valve, refrigerated module and Intermediate Heat Exchanger be connecting system (namely not participating in work) not]
(2) when outdoor temperature is greater than T2 and be less than or equal to T1, close cold water main unit, open cooling tower and Intermediate Heat Exchanger, now cooling water circulates between Intermediate Heat Exchanger and cooling tower; The recirculated cooling water in cooling tower is utilized to provide cold for Intermediate Heat Exchanger; Condensation fan opens [now, by the setting of triple valve, refrigerated module and cold water main unit be connecting system (namely not participating in work) not];
(3) when outdoor environment temperature is less than or equal to T2, close the blower fan of cold water main unit and cooling tower, open spray equipment and the Intermediate Heat Exchanger of cooling tower, now cooling water circulates between Intermediate Heat Exchanger and cooling tower, and condensation fan is closed.[now, by the setting of triple valve, refrigerated module and cold water main unit be connecting system (namely not participating in work) not]
(4) when outdoor environment temperature is less than or equal to T3, close cold water main unit and cooling tower, open refrigerated module, now no-cooling-water circulation; T3 is a certain temperature value in-8 ~-12 DEG C; [preferred value is-10 DEG C] [now, by setting of triple valve, Intermediate Heat Exchanger and main frame and cooling tower not connecting system (namely not participating in work)]
Based on the refrigerating method that double source is cold, aforesaid integrated double source refrigeration station is adopted to implement refrigeration; Control method is as follows:
Set temperature control point T1 and T2; And T1 > T2; T1 and T2 is respectively 20 DEG C and 0 DEG C.;
(1) when outdoor temperature is greater than T1, open cold water main unit and cooling tower, now cooling water circulates between cold water main unit and cooling tower; [now, by the setting of triple valve, refrigerated module and Intermediate Heat Exchanger be connecting system (namely not participating in work) not]
(2) when outdoor temperature is greater than T2 and be less than or equal to T1, close cold water main unit, open cooling tower and Intermediate Heat Exchanger, now cooling water circulates between Intermediate Heat Exchanger and cooling tower; The recirculated cooling water in cooling tower is utilized to provide cold for Intermediate Heat Exchanger; Condensation fan opens [now, by the setting of triple valve, refrigerated module and cold water main unit be connecting system (namely not participating in work) not];
(3) when outdoor environment temperature is less than or equal to T2, close the blower fan of cold water main unit and cooling tower, open spray equipment and the Intermediate Heat Exchanger of cooling tower, now cooling water circulates between Intermediate Heat Exchanger and cooling tower, and condensation fan is closed.[now, by the setting of triple valve, refrigerated module and cold water main unit be connecting system (namely not participating in work) not]
Integration double source refrigeration station also comprises refrigerated module (19); Refrigerated module is connected with the water return pipeline that supplies of chilled water system by valve; Refrigerated module is controlled by control system; Refrigerated module is wind-water-to-water heat exchanger, is chilled water cooling in chilled water system for adopting outdoor air; Blower fan is provided with in refrigerated module;
When outdoor environment temperature is less than or equal to T3, close cold water main unit and cooling tower, open refrigerated module, now no-cooling-water circulation; T3 is a certain temperature value in-8 ~-12 DEG C; [preferred value is-10 DEG C] [now, by setting of triple valve, Intermediate Heat Exchanger and main frame and cooling tower not connecting system (namely not participating in work)].

Claims (10)

1. an integrated double source refrigeration station, is characterized in that, comprises cold water main unit (1), Intermediate Heat Exchanger (10), cooling water system, chilled water system and control system; The temperature sensor being integrated with controller in control system and being connected with controller;
Cold water main unit is arranged on cooling water system and unifies between chilled water system;
Described Intermediate Heat Exchanger and cold water main unit are in parallel by triple valve, and Intermediate Heat Exchanger and cold water main unit share cooling water system and to unify the confession water return pipeline of chilled water system;
Cold water main unit, cooling water system, chilled water system and triple valve are all controlled by control system;
Cooling water system comprises cooling tower (3) and is arranged on the cooling water pump (2) on cooling tower outlet pipeline;
Chilled water system comprises chilled water pump (11), level pressure expansion drum (12) and descaler (13); Chilled water pump, level pressure expansion drum and descaler are successively set on the supply channel of chilled water system by water supply direction.
2. integrated double source refrigeration station according to claim 1, is characterized in that, described cooling tower comprises condensation fan (9), water-locator (8), spray equipment (7) and packing layer (6); Cooling tower is provided with air inlet (5); Condensation fan, water-locator, spray equipment, packing layer and air inlet are arranged from top to bottom successively; Water-locator is connected with spray equipment.
3. integrated double source refrigeration station according to claim 2, is characterized in that, be provided with apparatus for eliminating sludge bottom cooling tower.
4. integrated double source refrigeration station according to claim 1, is characterized in that, cold water main unit adopts screw cold water main unit, vortex cold water main unit;
Described Intermediate Heat Exchanger is plate type heat exchanger or shell and tube exchanger;
Cooling water pump adopts vane type oil pump, positive displacement pump or jet pump;
Cooling tower adopts open cooling tower;
Chilled water pump adopts vane type oil pump, positive displacement pump or jet pump;
Level pressure expansion drum adopts bellows Constant pressure tank or diaphragm type Constant pressure tank;
Descaler adopts electronic scale remover.
5. integrated double source refrigeration station according to claim 2, is characterized in that, described condensation fan (9) adopts axial flow blower;
Filler in packing layer adopts the wrong filler of S ripple filler, oblique, step Trapezium oblique wave filler, the sinusoidal wave filler of difference position formula, some ripple filler, hexagon cellular filler, two-way ripple filler or bias ripple filler.
6. integrated double source refrigeration station according to claim 2, is characterized in that, set temperature control point T1 and T2; And T1 > T2; T1 is a certain value in 15-25 DEG C; T2 is a certain value in-2 ~ 2 DEG C;
(1) when outdoor temperature is greater than T1, open cold water main unit and cooling tower, now cooling water circulates between cold water main unit and cooling tower;
(2) when outdoor temperature is greater than T2 and be less than or equal to T1, close cold water main unit, open cooling tower and Intermediate Heat Exchanger, now cooling water circulates between Intermediate Heat Exchanger and cooling tower; The recirculated cooling water in cooling tower is utilized to provide cold for Intermediate Heat Exchanger; Condensation fan is opened;
(3) when outdoor environment temperature is less than or equal to T2, close the blower fan of cold water main unit and cooling tower, open spray equipment and the Intermediate Heat Exchanger of cooling tower, now cooling water circulates between Intermediate Heat Exchanger and cooling tower, and condensation fan is closed.[now, by the setting of triple valve, refrigerated module and cold water main unit be connecting system (namely not participating in work) not]
[as preferably, T1 and T2 is respectively 20 DEG C and 0 DEG C.】。
7. the integrated double source refrigeration station according to any one of claim 1-6, is characterized in that, also comprises refrigerated module (19); Refrigerated module is connected with the water return pipeline that supplies of chilled water system by valve; Refrigerated module is controlled by control system; Refrigerated module is wind-water-to-water heat exchanger, is chilled water cooling in chilled water system for adopting outdoor air; Blower fan is provided with in refrigerated module.
8. integrated double source refrigeration station according to claim 7, is characterized in that, when outdoor environment temperature is less than or equal to T3, closes cold water main unit and cooling tower, opens refrigerated module, now no-cooling-water circulation; T3 is a certain temperature value in-8 ~-12 DEG C.
9. based on the refrigerating method that double source is cold, it is characterized in that, adopt the integrated double source refrigeration station described in any one of claim 1-6 to implement refrigeration; Control method is as follows:
Set temperature control point T1 and T2; And T1 > T2; T1 is a certain value in 15-25 DEG C; T2 is a certain value in-2 ~ 2 DEG C;
(1) when outdoor temperature is greater than T1, open cold water main unit and cooling tower, now cooling water circulates between cold water main unit and cooling tower;
(2) when outdoor temperature is greater than T2 and be less than or equal to T1, close cold water main unit, open cooling tower and Intermediate Heat Exchanger, now cooling water circulates between Intermediate Heat Exchanger and cooling tower; The recirculated cooling water in cooling tower is utilized to provide cold for Intermediate Heat Exchanger; Condensation fan is opened;
(3) when outdoor environment temperature is less than or equal to T2, close the blower fan of cold water main unit and cooling tower, open spray equipment and the Intermediate Heat Exchanger of cooling tower, now cooling water circulates between Intermediate Heat Exchanger and cooling tower, and condensation fan is closed.
10. the refrigerating method cold based on double source according to claim 9, is characterized in that, integrated double source refrigeration station also comprises refrigerated module (19); Refrigerated module is connected with the water return pipeline that supplies of chilled water system by valve; Refrigerated module is controlled by control system; Refrigerated module is wind-water-to-water heat exchanger, is chilled water cooling in chilled water system for adopting outdoor air; Blower fan is provided with in refrigerated module;
When outdoor environment temperature is less than or equal to T3, close cold water main unit and cooling tower, open refrigerated module, now no-cooling-water circulation; T3 is a certain temperature value in-8 ~-12 DEG C.
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CN112594809A (en) * 2020-11-26 2021-04-02 依米康科技集团股份有限公司 Subway channel type evaporative cold water cooling air system and control method

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