CN203533947U - Low temperature cold water system - Google Patents
Low temperature cold water system Download PDFInfo
- Publication number
- CN203533947U CN203533947U CN201320583658.0U CN201320583658U CN203533947U CN 203533947 U CN203533947 U CN 203533947U CN 201320583658 U CN201320583658 U CN 201320583658U CN 203533947 U CN203533947 U CN 203533947U
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- Prior art keywords
- liquid
- compressor
- oil
- low temperature
- liquid reservoir
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 27
- 239000007788 liquid Substances 0.000 claims abstract description 81
- 238000001816 cooling Methods 0.000 claims abstract description 28
- 239000003507 refrigerant Substances 0.000 claims description 12
- 239000007864 aqueous solution Substances 0.000 claims description 6
- 239000000243 solution Substances 0.000 claims description 5
- LYCAIKOWRPUZTN-UHFFFAOYSA-N glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 4
- SVTBMSDMJJWYQN-UHFFFAOYSA-N 2-Methyl-2,4-pentanediol Chemical compound CC(O)CC(C)(C)O SVTBMSDMJJWYQN-UHFFFAOYSA-N 0.000 claims description 3
- UXVMQQNJUSDDNG-UHFFFAOYSA-L cacl2 Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 claims description 3
- 229940051250 hexylene glycol Drugs 0.000 claims description 3
- FAPWRFPIFSIZLT-UHFFFAOYSA-M sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 3
- 238000005057 refrigeration Methods 0.000 description 13
- 239000003795 chemical substances by application Substances 0.000 description 3
- 239000000498 cooling water Substances 0.000 description 3
- 238000001704 evaporation Methods 0.000 description 3
- 230000005494 condensation Effects 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000002309 gasification Methods 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 238000007906 compression Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006011 modification reaction Methods 0.000 description 1
- 238000010977 unit operation Methods 0.000 description 1
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Abstract
The utility model relates to a low temperature cold water system. The low temperature cold water system comprises a low temperature flooded evaporator, a liquid distributor, a liquid storage device and at least one screw rod compressor system, wherein each screw rod compressor system comprises a plate oil cooling heat exchanger, an ejector pump, a screw rod compressor, a first electromagnetic valve and an oil separator. The low temperature cold water system is characterized in that the low temperature cold water system further comprises an evaporative condenser, a bypass liquid supplying system is further arranged between the low temperature flooded evaporator and the liquid storage device, and the two screw rod compressor systems are arranged. The low temperature cold water system has the advantages that the refrigerating capacity range of the low temperature cold water system is expanded, operating conditions of the compressors are effectively improved, the operating conditions of the whole system are improved, and the refrigerating efficiency of the whole refrigerating system is improved.
Description
Technical field
The utility model relates to refrigeration technology field, relates in particular to a kind of low-temperature water cooling system.
Background technology
Current existing low-temperature water cooling system, evaporimeter adopts dry evaporator more, and condenser adopts water cooled condenser, and water cooled condenser needs supporting cooling tower, cooling water pump and cooling water system, and initial investment is higher.Configuration makes unit operation in lower evaporating temperature and higher condensation temperature like this, and the refrigerating efficiency of unit reduces greatly.Compressor operating is under this operating mode simultaneously, and delivery temperature and oil temperature are higher, have worsened the running environment of compressor.For this reason, adopt to compressor ejector refrigeration agent liquid of prior art reduced delivery temperature more; Adopt ejector refrigeration agent liquid to carry out the temperature of cooling refrigeration oil, cold-producing medium enters into compressor again, although this mode can effectively reduce the delivery temperature of compressor and the temperature of refrigeration oil, but the cold-producing medium of ejector refrigeration agent and cooling refrigeration oil enters into compressor carries out compression cycle, having reduced should be at the cold-producing medium of evaporator evaporation refrigeration, the refrigerating capacity that has reduced unit has increased the power consumption of compressor simultaneously, has reduced the refrigerating efficiency of system; In addition, the environment for use of low-temperature water cooling system is different, because the variation of system conditions is larger, just needs liquid-supplying system to possess wider adjustable range; And current low-temperature water cooling system generally adopts separate unit semi-hermetic screw compressor, cold scope is less.
Utility model content
The utility model, for the deficiency of above-mentioned technical problem, provides a kind of refrigerating efficiency high, the low-temperature water cooling system that initial investment is little.
The technical scheme that the utility model solves the problems of the technologies described above is as follows: a kind of low-temperature water cooling system, comprise low temperature flooded evaporator, liquid distributor, liquid reservoir and at least a set of screw compressor system, described screw compressor system comprises plate-type oil cold heat exchanger, jet pump, helical-lobe compressor, the first magnetic valve and oil eliminator, it is characterized in that, described low-temperature water cooling system also comprises evaporative condenser, the compressor inlet of described helical-lobe compressor is connected with the evaporimeter gas outlet of described low temperature flooded evaporator, the exhaust outlet of compressor of described helical-lobe compressor is connected with the oil eliminator air inlet of described oil eliminator, oil eliminator gas outlet is connected with the condenser air inlet of described evaporative condenser, the oil eliminator oil-out of described oil eliminator is by described the first magnetic valve, jet pump is connected with described compressor inlet, the low-pressure end of described jet pump is connected with the evaporimeter oil return opening of described low temperature flooded evaporator, the condenser liquid outlet of described evaporative condenser is connected with the distributor inlet of described liquid distributor, the main liquid outlet of distributor of described liquid distributor is connected with the liquid reservoir inlet of described liquid reservoir, the heat exchanger oil-in of described plate-type oil cold heat exchanger and heat exchanger oil-out are connected with compressor oil-out and the compressor oil-in of described helical-lobe compressor respectively, the refrigerant inlet of described plate-type oil cold heat exchanger is connected with the secondary liquid outlet of the distributor of described distributor, refrigerant outlet is connected with the liquid reservoir air inlet of described liquid reservoir, between the liquid reservoir gas outlet of described liquid reservoir and the condenser air inlet of described evaporative condenser, be also provided with connecting pipeline,
Between the evaporimeter inlet of described low temperature flooded evaporator and the liquid reservoir liquid outlet of liquid reservoir, be also provided with liquid bypass liquid-supplying system, described liquid bypass liquid-supplying system comprises the second magnetic valve, electric expansion valve and stop valve, described electric expansion valve is connected between described low temperature flooded evaporator and liquid reservoir, is attempted by the two ends of described electric expansion valve after described the second magnetic valve and stop valve series connection
On the basis of technique scheme, the utility model can also be done following improvement.
Further, described screw compressor system is provided with two covers, and described two cover screw compressor system are connected in parallel.
Further, the medium of described low temperature flooded evaporator is the calcium chloride salt aqueous solution, the sodium chloride salt aqueous solution, hexylene glycol solution.
Further, described helical-lobe compressor is semi-hermetic screw compressor.
Low-temperature water cooling system of the present utility model, adopts a kind of energy-saving cold condenser-evaporative condenser as the condenser of system, effectively reduces condensation temperature, has save cooling tower, cooling water pump and cooling system simultaneously and has reduced initial investment; Adopt the high low temperature flooded evaporator of heat exchange efficiency effectively to improve evaporating temperature; Adopt low temperature flooded evaporator, jet pump, helical-lobe compressor, the first magnetic valve, oil eliminator to connect to form a set of ejecting scavenge return system simultaneously, can effectively make the refrigeration oil in low temperature flooded evaporator get back to compressor; Adopt plate-type oil cold heat exchanger, helical-lobe compressor, evaporative condenser, liquid distributor, liquid reservoir to connect to form a set of oil-spraying cooling system, effectively reduce the delivery temperature of compressor and the temperature of refrigeration oil.This oil-spraying cooling system is operation like this, through the cooling refrigerant liquid of evaporative condenser, through liquid distributor, distributing part of refrigerant liquid to enter into plate-type oil cold heat exchanger cools to the circulating frozen oil of compressor, refrigeration oil through cooling is ejected into the service condition that effectively reduces delivery temperature in helical-lobe compressor and improved compressor, the part of refrigerant liquid endothermic gasification of plate-type oil cold heat exchanger of flowing through enters into liquid reservoir, the cold-producing medium of gasification enters into evaporative condenser by pipeline again and carries out cool cycles, this part cold-producing medium of cooling refrigeration oil does not enter into compressor compresses circulation, there is no consumed work.Adopt multiple compressors parallel connection can effectively improve the refrigerating capacity scope of cryogenic system.
The beneficial effects of the utility model are: improved the cold scope of low-temperature water cooling system, effectively improved the service condition of compressor, improved the operating condition of whole system, improved the refrigerating efficiency of whole refrigeration system, reduced energy consumption, be beneficial to environmental protection.Adopt in addition a set of Liquid refrigerant by-pass liquid-supplying system can effectively increase by adjusting the switch of the second magnetic valve the adjustable range of liquid-supplying system.By two covers or the above screw compressor system of two covers, also improved system cold scope.
Accompanying drawing explanation
Fig. 1 is hydraulic circuit schematic diagram of the present utility model.
In Fig. 1,1, low temperature flooded evaporator; 1-1, evaporimeter gas outlet; 1-2, evaporimeter oil return opening; 1-3, evaporimeter inlet; 1-4, evaporimeter water inlet; 1-5, evaporimeter delivery port 2, plate-type oil cold heat exchanger; 2-1, heat exchanger oil-in; 2-2, heat exchanger oil-out; 2-3, refrigerant outlet; 2-4, refrigerant inlet; 3, jet pump; 4, helical-lobe compressor; 4-1, compressor inlet; 4-2, exhaust outlet of compressor; 4-3, compressor oil-out; 4-4, compressor oil-in 5, the first magnetic valve; 6, oil eliminator; 6-1, oil eliminator air inlet; 6-2, oil eliminator gas outlet; 6-3, oil eliminator oil-out 7, evaporative condenser; 7-1, condenser air inlet; 7-2, condenser liquid outlet; 8, liquid distributor; 8-1, distributor inlet; 8-2, the main liquid outlet of distributor; 8-3, the secondary liquid outlet of distributor; 9, liquid reservoir; 9-1, liquid reservoir inlet; 9-2, liquid reservoir air inlet; 9-3, liquid reservoir gas outlet; 9-4, liquid reservoir liquid outlet; 10, the second magnetic valve; 11, electric expansion valve; 12, stop valve.
The specific embodiment
Below in conjunction with accompanying drawing, principle of the present utility model and feature are described, example, only for explaining the utility model, is not intended to limit scope of the present utility model.
As shown in Figure 1, a kind of low-temperature water cooling system, comprise low temperature flooded evaporator 1, liquid distributor 8, liquid reservoir 9 and at least a set of screw compressor system, described screw compressor system comprises plate-type oil cold heat exchanger 2, jet pump 3, helical-lobe compressor 4, the first magnetic valve 5 and oil eliminator 6, it is characterized in that, described low-temperature water cooling system also comprises evaporative condenser 7, the compressor inlet 4-1 of described helical-lobe compressor 4 is connected with the evaporimeter gas outlet 1-1 of described low temperature flooded evaporator 1, the exhaust outlet of compressor 4-2 of described helical-lobe compressor is connected with the oil eliminator air inlet 6-1 of described oil eliminator 6, oil eliminator gas outlet 6-2 is connected with the condenser air inlet 7-1 of described evaporative condenser 7, the oil eliminator oil-out 6-3 of described oil eliminator 6 is by described the first magnetic valve 5, jet pump 3 is connected with described compressor inlet 4-1, the low-pressure end of described jet pump 3 is connected with the evaporimeter oil return opening 1-2 of described low temperature flooded evaporator 1, the condenser liquid outlet 7-2 of described evaporative condenser 7 is connected with the distributor inlet 8-1 of described liquid distributor 8, the main liquid outlet 8-2 of distributor of described liquid distributor 8 is connected with the liquid reservoir inlet 9-1 of described liquid reservoir 9, the heat exchanger oil-in 2-1 of described plate-type oil cold heat exchanger and heat exchanger oil-out 2-2 are connected with compressor oil-out 4-3 and the compressor oil-in 4-4 of described helical-lobe compressor 4 respectively, the refrigerant inlet 2-4 of described plate-type oil cold heat exchanger is connected with the secondary liquid outlet 8-3 of the distributor of described distributor 8, refrigerant outlet 2-3 is connected with the liquid reservoir air inlet 9-2 of described liquid reservoir 9, between the liquid reservoir gas outlet 9-3 of described liquid reservoir 9 and the condenser air inlet 7-1 of described evaporative condenser 7, be also provided with connecting pipeline,
Between the liquid reservoir liquid outlet 9-4 of the evaporimeter inlet 1-3 of described low temperature flooded evaporator 1 and liquid reservoir 9, be also provided with liquid bypass liquid-supplying system, described liquid bypass liquid-supplying system comprises the second magnetic valve 10, electric expansion valve 11 and stop valve 12, described electric expansion valve 11 is connected between described low temperature flooded evaporator 1 and liquid reservoir 9, is attempted by the two ends of described electric expansion valve 11 after described the second magnetic valve 10 and stop valve 12 both series connection.
Described screw compressor system is provided with two covers, and described two cover screw compressor system are connected in parallel.
The medium of described low temperature flooded evaporator 1 is the calcium chloride salt aqueous solution, the sodium chloride salt aqueous solution, hexylene glycol solution or ethylene glycol solution.
Described helical-lobe compressor 4 is semi-hermetic screw compressor.
The foregoing is only preferred embodiment of the present utility model, not in order to limit the utility model, all within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.
Claims (4)
1. a low-temperature water cooling system, comprise low temperature flooded evaporator (1), liquid distributor (8), liquid reservoir (9) and at least a set of screw compressor system, described screw compressor system comprises plate-type oil cold heat exchanger (2), jet pump (3), helical-lobe compressor (4), the first magnetic valve (5) and oil eliminator (6), it is characterized in that, described low-temperature water cooling system also comprises evaporative condenser (7), the compressor inlet (4-1) of described helical-lobe compressor (4) is connected with the evaporimeter gas outlet (1-1) of described low temperature flooded evaporator (1), the exhaust outlet of compressor of described helical-lobe compressor (4-2) is connected with the oil eliminator air inlet (6-1) of described oil eliminator (6), oil eliminator gas outlet (6-2) is connected with the condenser air inlet (7-1) of described evaporative condenser (7), oil eliminator oil-out (6-3) is by described the first magnetic valve (5), jet pump (3) is connected with described compressor inlet (4-1), the low-pressure end of described jet pump (3) is connected with the evaporimeter oil return opening (1-2) of described low temperature flooded evaporator (1), the condenser liquid outlet (7-2) of described evaporative condenser (7) is connected with the distributor inlet (8-1) of described liquid distributor (8), the main liquid outlet of distributor (8-2) of described liquid distributor (8) is connected with the liquid reservoir inlet (9-1) of described liquid reservoir (9), the heat exchanger oil-in (2-1) of described plate-type oil cold heat exchanger and heat exchanger oil-out (2-2) are connected with compressor oil-out (4-3) and the compressor oil-in (4-4) of described helical-lobe compressor (4) respectively, the refrigerant inlet of described plate-type oil cold heat exchanger (2-4) is connected with the secondary liquid outlet of distributor (8-3) of described distributor (8), refrigerant outlet (2-3) is connected with the liquid reservoir air inlet (9-2) of described liquid reservoir (9), between the liquid reservoir gas outlet of described liquid reservoir (9) (9-3) and the condenser air inlet (7-1) of described evaporative condenser (7), be also provided with connecting pipeline,
Between the evaporimeter inlet (1-3) of described low temperature flooded evaporator (1) and the liquid reservoir liquid outlet (9-4) of liquid reservoir (9), be also provided with liquid bypass liquid-supplying system, described liquid bypass liquid-supplying system comprises the second magnetic valve (10), electric expansion valve (11) and stop valve (12), described electric expansion valve (11) is connected between described low temperature flooded evaporator (1) and liquid reservoir (9), is attempted by the two ends of described electric expansion valve (11) after both series connection of described the second magnetic valve (10) and stop valve (12).
2. low-temperature water cooling system according to claim 1, is characterized in that, described screw compressor system is provided with two covers, and described two cover screw compressor system are connected in parallel.
3. low-temperature water cooling system according to claim 1 and 2, is characterized in that, the medium of described low temperature flooded evaporator (1) is the calcium chloride salt aqueous solution, the sodium chloride salt aqueous solution, hexylene glycol solution or ethylene glycol solution.
4. low-temperature water cooling system according to claim 1, is characterized in that, described helical-lobe compressor (4) is semi-hermetic screw compressor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320583658.0U CN203533947U (en) | 2013-09-22 | 2013-09-22 | Low temperature cold water system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320583658.0U CN203533947U (en) | 2013-09-22 | 2013-09-22 | Low temperature cold water system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203533947U true CN203533947U (en) | 2014-04-09 |
Family
ID=50420145
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320583658.0U Withdrawn - After Issue CN203533947U (en) | 2013-09-22 | 2013-09-22 | Low temperature cold water system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203533947U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103486753A (en) * | 2013-09-22 | 2014-01-01 | 烟台欧森纳地源空调有限公司 | Low-temperature water cooling system |
| CN106403097A (en) * | 2016-08-29 | 2017-02-15 | 华信咨询设计研究院有限公司 | Cooling type magnetic turbo energy-saving air conditioning unit and control method |
-
2013
- 2013-09-22 CN CN201320583658.0U patent/CN203533947U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103486753A (en) * | 2013-09-22 | 2014-01-01 | 烟台欧森纳地源空调有限公司 | Low-temperature water cooling system |
| CN106403097A (en) * | 2016-08-29 | 2017-02-15 | 华信咨询设计研究院有限公司 | Cooling type magnetic turbo energy-saving air conditioning unit and control method |
| CN106403097B (en) * | 2016-08-29 | 2019-01-29 | 华信咨询设计研究院有限公司 | Cooling water type magnetic force turbine energy-saving type air conditioner unit and control method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140409 Effective date of abandoning: 20160120 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |