CN104457002A - Integrated double-cooling water chilling unit - Google Patents
Integrated double-cooling water chilling unit Download PDFInfo
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- CN104457002A CN104457002A CN201410845061.8A CN201410845061A CN104457002A CN 104457002 A CN104457002 A CN 104457002A CN 201410845061 A CN201410845061 A CN 201410845061A CN 104457002 A CN104457002 A CN 104457002A
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- water
- cooling
- catch basin
- compressor
- oil
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B1/00—Compression machines, plants or systems with non-reversible cycle
- F25B1/005—Compression machines, plants or systems with non-reversible cycle of the single unit type
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B39/00—Evaporators; Condensers
- F25B39/04—Condensers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2339/00—Details of evaporators; Details of condensers
- F25B2339/04—Details of condensers
- F25B2339/047—Water-cooled condensers
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Power Engineering (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
Abstract
The invention provides an integrated double-cooling water chilling unit. The integrated double-cooling water chilling unit has the advantages of being high in integration degree, convenient to install, efficient, capable of saving energy and wide in application range, a heat exchanger is cleaned without shutdown, and the integrated double-cooling water chilling unit is convenient to use. The integrated double-cooling water chilling unit particularly comprises a closed refrigeration cycling system. The closed refrigeration cycling system is formed by a compressor, an oil separator, a double-cooling condenser, an expanding and throttling device and an evaporator which are connected together in series sequentially. A freezing water cycling device is arranged between an inlet and an outlet of the evaporator. The double-cooling condenser comprises a catch basin and a spraying device. The spaying device is communicated with the catch basin through a spraying water cycling pump and a first water processing device. A cooling coil, a flow equalizing plate, filler and the catch basin are arranged below the spraying device in sequence. A cooling fan is arranged at the top of the double-cooling condenser. A pre-cooler and a water collector are arranged below the cooling fan in sequence. The catch basin is provided with a first automatic water supplement device, an overflow pipe, an automatic drainage device and an on-line dirt sucker. One end of the pre-cooler is connected with a gas outlet of the oil separator, and the other end of the pre-cooler is connected with the expanding and throttling device through the cooling coil.
Description
Technical field
The present invention relates to air-conditioner set technical field, especially relate to the two cold handpiece Water Chilling Units of a kind of integral type.
Background technology
Integration handpiece Water Chilling Units because it is energy-efficient, compact conformation, easy for installation, in an increasingly wide range of applications in China in recent years.At present, integrated handpiece Water Chilling Units on market mainly contains two kinds of forms: 1, chiller unit, cooling tower, coolant pump, refrigerating water pump, expansion tank and pipeline and control device are integrated, can outdoor mounted, install simple without the need to Special machine room, but the shortcoming that unit exists heat exchange efficiency difference, water consumption is large, noise is large, volume is large, efficiency is low; 2, chiller unit, evaporative condenser, coolant pump and pipeline and control device are integrated, can outdoor mounted, heat exchange efficiency is high and water consumption is little, but unit exist pipeline complexity, long in time limit, loaded down with trivial details, that operational efficiency is poor shortcoming is installed.
After the integrated handpiece Water Chilling Units longtime running of above-mentioned two kinds of forms, heat exchanger tube can produce dirt, thus cause heat transfer effect to decline, deterioration of efficiency, therefore need according to water quality situation periodic cleaning heat exchanger.Now adopt Chemical cleaning and high pressure water cleaning, not only time-consuming, effort, costly more, also must shut down and have influence on cooling, bringing inconvenience to user.And the integrated handpiece Water Chilling Units of above-mentioned two kinds of forms all cannot realize year round cooling function, therefore cannot be used in air-conditioning or the technique occasion of year round cooling, the scope of application is narrower.
Summary of the invention
The object of the invention is to propose the two cold handpiece Water Chilling Units of a kind of integral type, it has degree of integration feature high, easy for installation, energy-efficient and applied widely, without the need to stop cleaning heat exchanger, easy to use.
The two cold handpiece Water Chilling Units of integral type of the present invention comprises the closed cryogenic cycles system be made up of the compressor be cascaded successively, oil eliminator, two cool condenser, expansion throttling device, evaporimeter; Chilled water EGR is provided with between the import and export of described evaporimeter; Key is that described pair of cool condenser comprises catch basin and spray equipment; Described spray equipment is communicated with catch basin by shower water circulating pump and the first water treatment facilities, cooling coil, homogenizing plate, filler, catch basin is provided with successively under spray equipment, the top of two cool condenser is provided with cooling blower, is provided with forecooler, water collection device successively below cooling blower; Described catch basin is furnished with the first automatic water-replenishing device, overflow pipe, automatic sewage discharging device, the dirty device of online suction; One end of described forecooler is connected with the gas outlet of oil eliminator, and the other end is connected with expansion throttling device by cooling coil.
Further, described pair is serially connected with device for drying and filtering, liquid-sighting glass between cool condenser and expansion throttling device.
Specifically, the exhaust outlet of described compressor is connected with the air inlet of oil eliminator, and the oil-out of described oil eliminator is connected with the oil-in of compressor by an oil return apparatus, and described oil return apparatus is made up of the oil strainer of connecting and oil return solenoid valve; The gas outlet of described oil eliminator is connected with the entrance of two cool condenser, the outlet of two cool condenser is connected with the entrance of described evaporimeter by device for drying and filtering, liquid-sighting glass, expansion throttling device, described evaporator outlet is connected with the air entry of compressor, the outlet of described compressor is connected with the entrance of compressor by an injection oil return device, described injection oil return device is made up of the ejecting scavenge return magnetic valve of connecting and injector, and described injector is connected with the oil return pipe of evaporimeter.
The operation principle of the two cold handpiece Water Chilling Units of above-mentioned integral type is as follows: the liquid refrigerant in evaporimeter absorbs heat, be evaporated to gaseous refrigerant, entered in compressor by the air entry of compressor and become gases at high pressure, then be expelled in oil eliminator and carry out Oil-gas Separation, gases at high pressure after oil eliminator Oil-gas Separation enter two cool condenser and are condensed into the liquid refrigerant of high pressure, then become low-pressure, liquid refrigerant through expansion throttling device and get back in this evaporimeter, above process circularly cooling again and again.
Oil return solenoid valve and compressor, with opening with closing, can control oil return work by the unlatching or closedown controlling this oil return solenoid valve; And oil strainer can filter the impurity in return line, prevent pipeline blockage, ensure that oil enters compressor inside, thus extend the service life of this compressor.Ejecting scavenge return work can be controlled by the unlatching or closedown controlling the ejecting scavenge return magnetic valve in injection oil return device, and injector utilizes the refrigerant gas of compressor air-discharging end elevated pressures to suck in injector by evaporimeter mesolow refrigeration oil, get back to the suction end of compressor after mixing, reach the object of oil return.
Shower water circulating pump draws water through the first water treatment facilities feeding spray equipment from catch basin, shower water is sprayed the surface of cooling coil to form the thin water film of continuous uniform by spray equipment, it is the high-temperature high-pressure refrigerant that compressor is discharged after forecooler cooling in cooling coil, cooling coil is outward thin water film and cooling blower forced convection cooling-air from top to bottom, and the cold-producing medium in cooling coil is carried out hot and humid area by this thin water film and cooling-air; Unevaporated shower water flows into filler uniformly through homogenizing plate, the cooling-air flowed through with side carries out heat exchange in filler, saturated moist air in cooling coil and filler is extracted out by cooling blower, and after water collection device, forecooler, carry out heat exchange with the high-temperature high-pressure refrigerant in forecooler successively, then enter air from the outlet of top cooling blower; Shower water after cooled enters in catch basin, then proceeds circulation through shower water circulating pump, and the water evaporated in condensation process is supplemented automatically by the first automatic water-replenishing device; Cooling coil outlet is connected with expansion throttling device entrance.High-temperature high-pressure refrigerant due to compressor discharge first enters cooling coil and shower water and cooling-air again and carries out hot and humid area after forecooler cooling, and therefore make condensation temperature lower, heat exchange efficiency is higher.The forecooler be provided with in two cool condenser, the first water treatment facilities, the dirty device of online suction and automatic sewage discharging device are equivalent to carry out online quadruple antiscale, scale removal measure to this pair of cool condenser.
Further, described shower water circulating pump is furnished with electric heater; Described catch basin is furnished with electric heater unit and catch basin heat insulation wall.When outer temperature degree is lower than setting value, the electric heater on shower water circulating pump can be controlled and the electric heater unit in catch basin heats, so as not to due to environment temperature too low and water is freezed and then damages unit; Wherein catch basin heat insulation wall ensure that in catch basin that spraying water temperature can not too fastly lose, and serves good energy-saving effect, thus achieves year round cooling function.
Further, described chilled water EGR comprises the chilled water circulating pump and check valve that are cascaded, and between the import and export of described chilled water EGR, parallel pipeline is provided with self-operated type differential-pressure bypass valve; Between the import and export of described chilled water EGR, series pipe is provided with spiral degassing scummer, the second water treatment facilities and online ball cleaning apparatus.The Main Function of above-mentioned chilled water EGR is that the chilled water after release heat in evaporimeter being lowered the temperature is transported to user side, self-operated type differential-pressure bypass valve can keep the pressure reduction between the water-in and water-out mouth of pipe constant, and check valve can avoid the runner pipe of chilled water EGR to occur the refluence of circulation liquid.Above-mentioned spiral degassing scummer, the second water treatment facilities and online ball cleaning apparatus have carried out online triple filter to the runner pipe of this chilled water EGR, wherein spiral degassing scummer effectively can also remove air air mass in chilled water system and microbubble, has self-bleeding effect.
Further, the series pipe between the import and export of described chilled water EGR is also provided with blowoff valve, the second automatic water-replenishing device and level pressure expansion drum, described level pressure expansion drum is provided with adjustable safety valve.Above-mentioned level pressure expansion drum is used for playing compensator or trimmer pressure fluctuation and absorption portion feedwater in chilled water EGR, for eliminating the partial volume that working media increases because of variations in temperature; And adjustable safety valve is for discharging the pressure in chilled water system; Blowoff valve is for discharging the water in chilled water system; Above-mentioned three parts all play the effect ensureing system safety operation.
The process of circulation of liquid of circulating in above-mentioned chilled water EGR is: unit chilled water water inlet is connected to the delivery port of chilled water through spiral degassing scummer, chilled water circulating pump, the second water treatment facilities, online ball cleaning apparatus, evaporimeter and check valve by level pressure expansion drum.
Further, this pair of cold handpiece Water Chilling Units is provided with control device, and the water inlet of described chilled water EGR is provided with the second pressure sensor, the second temperature sensor; The water outlet of described chilled water EGR is provided with the first pressure sensor, three-temperature sensor, discharge switch, frost prevention switch; The 3rd pressure sensor is provided with between described oil eliminator and two cool condenser; The first temperature sensor is provided with between described spray equipment and the first water treatment facilities; Described control device is connected with compressor with the first pressure sensor, the second pressure sensor, the 3rd pressure sensor, the first temperature sensor, the second temperature sensor, three-temperature sensor, discharge switch, frost prevention switch, chilled water circulating pump, shower water circulating pump, cooling blower respectively.Control device is pressed except load start and stop except the control compressor of routine; can according to the second pressure sensor; first pressure sensor, the second temperature sensor; the signal of three-temperature sensor and discharge switch, frost prevention switch transmission; the start and stop of chilled water circulating pump and protection are controlled, with the demand of adaptive system refrigeration duty change.And the signal that can transmit according to the 3rd pressure sensor and the first temperature sensor, controls the start and stop of shower water circulating pump and cooling blower, run to adapt to the annual operating mode of unit.
The present invention is compared to the prior art advantageously: degree of integration is high, thus compact conformation, easy for installation, energy-efficient and applied widely.The two cold handpiece Water Chilling Units of integral type of the present invention is become one at two cool condenser, collection kind of refrigeration cycle, chilled water system, water treatment system, centralized control system, and alternative conventional machine room integral installation are in outdoor.This unit is without the need to Special machine room, without the need to cooling tower, no-cooling-water conveying power consumption, make that volume is less, efficiency is higher, compact conformation, long service life, facilitate installation and maintenance, and save equipment floor space, shorten construction period and reduce investment operating cost; Various industry and commerce air conditioning or the preparation of technique chilled water can be widely used in, be particularly useful for air-conditioning or the technique occasion of low wet bulb temperature area and year round cooling.
Be provided with forecooler, the first water treatment facilities, the dirty device of online suction and automatic sewage discharging device in two cool condensers of the two cold handpiece Water Chilling Units of integral type of the present invention, online quadruple process has been carried out to water quality; Spiral degassing scummer, the second water treatment facilities, online ball cleaning apparatus are installed in chilled water system, triple process has been carried out to water quality; Therefore the cleannes of heat exchanger tube in heat exchanger can be remained, without the need to stop cleaning heat exchanger, thus easy to use, and best heat-transfer effect can be guaranteed, the service life of heat exchanger tube can be extended, reduce labor intensity, increase economic benefit.
Accompanying drawing explanation
Fig. 1 is the workflow schematic diagram of the two cold handpiece Water Chilling Units of integral type of embodiments of the invention.
In figure: 1-compressor; 2-oil eliminator; The two cool condenser of 3-; 4-expansion throttling device; 5-high-efficiency evaporator; 6-chilled water EGR; 7-oil strainer; 8-oil return solenoid valve; 9-device for drying and filtering; 10-liquid-sighting glass; 11-ejecting scavenge return magnetic valve; 12-injector; 13-forecooler; 14-cooling coil; 15-homogenizing plate; 16-filler; 17-water collection device; 18-catch basin; 19-cooling blower; 20-shower water circulating pump; 21-first water treatment facilities; 22-spray equipment; 23-first automatic water-replenishing device; 24-overflow pipe; 25-automatic sewage discharging device; 26-inhales dirty device online; 27-spiral degassing scummer; 28-control device; 29-chilled water circulating pump; 30-outer container; 31-second water treatment facilities; The online ball cleaning apparatus of 32-; 33-check valve; 34-level pressure expansion drum; 35-second automatic water-replenishing device; 36-second pressure sensor; 37-adjustable safety valve; 38-electric heater unit; 39-first temperature sensor; 40-second temperature sensor; 41-discharge switch; 42-frost prevention switch; 43-three-temperature sensor; 44-electric heater; 45-first pressure sensor; 46-self-operated type differential-pressure bypass valve; 47-first clip; 48-second clip; 49-the 3rd pressure sensor; 50-catch basin heat insulation wall; 51-blowoff valve.
Detailed description of the invention
Contrast accompanying drawing below, by the description to embodiment, the effect and operation principle etc. of the specific embodiment of the present invention as the mutual alignment between the shape of involved each component, structure, each several part and annexation, each several part are described in further detail.
Embodiment 1:
As shown in Figure 1: the two cold handpiece Water Chilling Units of integral type of the present embodiment is positioned at an outer container 30, comprises the closed cryogenic cycles system be made up of the compressor 1 be cascaded successively, oil eliminator 2, two cool condenser 3, expansion throttling device 4, evaporimeter 5; Chilled water EGR 6 is provided with between the import and export of described evaporimeter 5; Key is that described pair of cool condenser 3 comprises catch basin 18 and spray equipment 22; Described spray equipment 22 is communicated with catch basin 18 by shower water circulating pump 20 and the first water treatment facilities 21, spray equipment is provided with cooling coil 14, homogenizing plate 15, filler 16, catch basin 18 for 22 times successively, the top of two cool condenser 3 is provided with cooling blower 19, is provided with forecooler 13, water collection device 17 below cooling blower 19 successively; Described catch basin 18 is furnished with the first automatic water-replenishing device 23, overflow pipe 24, automatic sewage discharging device 25, the dirty device 26 of online suction; One end of described forecooler 13 is connected with the gas outlet of oil eliminator 2, and the other end is connected with expansion throttling device 4 by cooling coil 14.
Further, device for drying and filtering 9, liquid-sighting glass 10 is serially connected with between described pair of cool condenser 3 and expansion throttling device 4.
Specifically, the exhaust outlet of described compressor 1 is connected with the air inlet of oil eliminator 2, and the oil-out of described oil eliminator 2 is connected with the oil-in of compressor 1 by an oil return apparatus, and described oil return apparatus is made up of the oil strainer 7 of connecting and oil return solenoid valve 8; The gas outlet of described oil eliminator 2 is connected with the entrance of two cool condenser 3, the outlet of two cool condenser 3 is connected with the entrance of described evaporimeter 5 by device for drying and filtering 9, liquid-sighting glass 10, expansion throttling device 4, described evaporimeter 5 exports and is connected with the air entry of compressor 1, the outlet of described compressor 1 is connected with the entrance of compressor 1 by an injection oil return device, described injection oil return device is made up of the ejecting scavenge return magnetic valve 11 of connecting and injector 12, and described injector 12 is connected with the oil return pipe of evaporimeter 5.
The operation principle of the two cold handpiece Water Chilling Units of above-mentioned integral type is as follows: the liquid refrigerant in evaporimeter 5 absorbs heat, be evaporated to gaseous refrigerant, entered in compressor 1 by the air entry of compressor 1 and become gases at high pressure, then be expelled in oil eliminator 2 and carry out Oil-gas Separation, gases at high pressure after oil eliminator 2 Oil-gas Separation enter two cool condenser 3 and are condensed into the liquid refrigerant of high pressure, then become low-pressure, liquid refrigerant through expansion throttling device 4 and get back in this evaporimeter 5, above process circularly cooling again and again.
Oil return solenoid valve 8 and compressor 1, with opening with closing, can control oil return work by the unlatching or closedown controlling this oil return solenoid valve 8; And oil strainer 7 can filter the impurity in return line, prevent pipeline blockage, ensure that oil enters compressor 1 inner, thus extend the service life of this compressor 1.Ejecting scavenge return work can be controlled by the unlatching or closedown controlling the ejecting scavenge return magnetic valve 11 in injection oil return device, and injector 12 utilizes the refrigerant gas of compressor 1 exhaust end elevated pressures to suck in injector 12 by evaporimeter 5 mesolow refrigeration oil, get back to the suction end of compressor 1 after mixing, reach the object of oil return.
Shower water circulating pump 20 draws water and sends into spray equipment 22 through the first water treatment facilities 21 from catch basin 18, shower water is sprayed the surface of cooling coil 14 to form the thin water film of continuous uniform by spray equipment 22, it is the high-temperature high-pressure refrigerant that compressor 1 is discharged after forecooler 13 is lowered the temperature in cooling coil 14, cooling coil 14 is outer is thin water film and cooling blower 19 forced convection cooling-air from top to bottom, and the cold-producing medium in cooling coil 14 is carried out hot and humid area by this thin water film and cooling-air; Unevaporated shower water flows into filler 16 uniformly through homogenizing plate 15, the cooling-air flowed through with side carries out heat exchange in filler 16, saturated moist air in cooling coil 14 and filler 16 is extracted out by cooling blower 19, and after water collection device 17, forecooler 13, carry out heat exchange with the high-temperature high-pressure refrigerant in forecooler 13 successively, then enter air from top cooling blower 19 outlet; Shower water after cooled enters in catch basin 18, then proceeds circulation through shower water circulating pump 20, and the water evaporated in condensation process is supplemented automatically by the first automatic water-replenishing device 23; Cooling coil 14 exports and is connected with expansion throttling device 4 entrance.High-temperature high-pressure refrigerant due to compressor 1 discharge first enters cooling coil 14 again and carries out hot and humid area with shower water and cooling-air after forecooler 13 is lowered the temperature, and therefore make condensation temperature lower, heat exchange efficiency is higher.Forecooler 13, first water treatment facilities 21 be provided with in two cool condenser 3, the dirty device 26 of online suction and automatic sewage discharging device 25 are equivalent to carry out online quadruple antiscale, scale removal measure to this pair of cool condenser 3.
Further, described shower water circulating pump 20 is furnished with electric heater 44; Described catch basin 18 is furnished with electric heater unit 38 and catch basin heat insulation wall 50.When outer temperature degree is lower than setting value, electric heater on shower water circulating pump 20 44 can be controlled and heat with the electric heater unit 38 in catch basin 18, so as not to due to environment temperature too low and water is freezed and then damages unit; Wherein catch basin heat insulation wall 50 ensure that in catch basin 18 that spraying water temperature can not too fastly lose, and serves good energy-saving effect, thus achieves year round cooling function.
Further, described chilled water EGR 6 comprises the chilled water circulating pump and check valve 33 that are cascaded, and between the import and export of described chilled water EGR 6, parallel pipeline is provided with self-operated type differential-pressure bypass valve 46; Between the import and export of described chilled water EGR 6, series pipe is provided with spiral degassing scummer 27, second water treatment facilities 31 and online ball cleaning apparatus 32.The Main Function of above-mentioned chilled water EGR 6 is that the chilled water after release heat in evaporimeter 5 being lowered the temperature is transported to user side, self-operated type differential-pressure bypass valve 46 can keep the pressure reduction between the water-in and water-out mouth of pipe constant, and check valve 33 can avoid the runner pipe of chilled water EGR 6 to occur the refluence of circulation liquid.Above-mentioned spiral degassing scummer 27, second water treatment facilities 31 and online ball cleaning apparatus 32 have carried out online triple filter to the runner pipe of this chilled water EGR 6, wherein spiral degassing scummer 27 effectively can also remove air air mass in chilled water system and microbubble, has self-bleeding effect.
Further, the series pipe between the import and export of described chilled water EGR 6 is also provided with blowoff valve 51, second automatic water-replenishing device 35 and level pressure expansion drum 34, described level pressure expansion drum 34 is provided with adjustable safety valve 37.Above-mentioned level pressure expansion drum 34 fluctuates and absorption portion feedwater, for eliminating the partial volume that working media increases because of variations in temperature for playing compensator or trimmer pressure in chilled water EGR 6; And adjustable safety valve 37 is for discharging the pressure in chilled water system; Blowoff valve 51 is for discharging the water in chilled water system; Above-mentioned three parts all play the effect ensureing system safety operation.
The import of chilled water EGR 6 is connected with the delivery port of user side by the second clip 48, the outlet of chilled water EGR 6 is connected with the water inlet of user side by the first clip 47, described second clip 48, first clip 47 has the ability of anti-vibration, resisted shrinkage and expansion, compare with Flange joint with welding, the stability of pipe-line system can be improved, and attended operation is simple, is convenient to follow-up maintenance, and can saves man-hour.
The process of circulation of liquid of circulating in above-mentioned chilled water EGR 6 is: unit chilled water water inlet is connected to the delivery port of chilled water through spiral degassing scummer 27, chilled water circulating pump, the second water treatment facilities 31, online ball cleaning apparatus 32, evaporimeter 5 and check valve 33 by level pressure expansion drum 34.
Further, this pair of cold handpiece Water Chilling Units is provided with control device 28, and the water inlet of described chilled water EGR 6 is provided with the second pressure sensor 36, second temperature sensor 40; The water outlet of described chilled water EGR 6 is provided with the first pressure sensor 45, three-temperature sensor 43, discharge switch 41, frost prevention switch 42; The 3rd pressure sensor 49 is provided with between described oil eliminator 2 and two cool condenser 3; The first temperature sensor 39 is provided with between described spray equipment 22 and the first water treatment facilities 21; Described control device 28 is connected with compressor 1 with the first pressure sensor 45, second pressure sensor 36, the 3rd pressure sensor 49, first temperature sensor 39, second temperature sensor 40, three-temperature sensor 43, discharge switch 41, frost prevention switch 42, chilled water circulating pump 29, shower water circulating pump 20, cooling blower 19 respectively.Control device 28 is pressed except load start and stop except the control compressor 1 of routine; can according to the second pressure sensor 36; first pressure sensor 45, second temperature sensor 40; the signal that three-temperature sensor 43 and discharge switch 41, frost prevention switch 42 transmit; the start and stop of chilled water circulating pump 29 and protection are controlled, with the demand of adaptive system refrigeration duty change.And the signal that can transmit according to the 3rd pressure sensor 49 and the first temperature sensor 39, controls the start and stop of shower water circulating pump 20 and cooling blower 19, run to adapt to the annual operating mode of unit.
The present invention is compared to the prior art advantageously: degree of integration is high, thus compact conformation, easy for installation, energy-efficient and applied widely.The two cold handpiece Water Chilling Units of integral type of the present invention is become one at two cool condenser, collection kind of refrigeration cycle, chilled water system, water treatment system, centralized control system, and alternative conventional machine room integral installation are in outdoor.This unit is without the need to Special machine room, without the need to cooling tower, no-cooling-water conveying power consumption, make that volume is less, efficiency is higher, compact conformation, long service life, facilitate installation and maintenance, and save equipment floor space, shorten construction period and reduce investment operating cost; Various industry and commerce air conditioning or the preparation of technique chilled water can be widely used in, be particularly useful for air-conditioning or the technique occasion of low wet bulb temperature area and year round cooling.
Forecooler 13, first water treatment facilities 21, the dirty device 26 of online suction and automatic sewage discharging device 25 is provided with, to water quality having been carried out to online quadruple process in two cool condensers 3 of the two cold handpiece Water Chilling Units of integral type of the present invention; Spiral degassing scummer 27, second water treatment facilities 31, online ball cleaning apparatus 32 are installed in chilled water system, triple process has been carried out to water quality; Therefore the cleannes of heat exchanger tube in heat exchanger can be remained, without the need to stop cleaning heat exchanger, thus easy to use, and best heat-transfer effect can be guaranteed, the service life of heat exchanger tube can be extended, reduce labor intensity, increase economic benefit.
Claims (7)
1. a two cold handpiece Water Chilling Units, comprises the closed cryogenic cycles system be made up of the compressor be cascaded successively, oil eliminator, two cool condenser, expansion throttling device, evaporimeter; Chilled water EGR is provided with between the import and export of described evaporimeter; It is characterized in that described pair of cool condenser comprises catch basin and spray equipment; Described spray equipment is communicated with catch basin by shower water circulating pump and the first water treatment facilities, cooling coil, homogenizing plate, filler, catch basin is provided with successively under spray equipment, the top of two cool condenser is provided with cooling blower, is provided with forecooler, water collection device successively below cooling blower; Described catch basin is furnished with the first automatic water-replenishing device, overflow pipe, automatic sewage discharging device, the dirty device of online suction; One end of described forecooler is connected with the gas outlet of oil eliminator, and the other end is connected with expansion throttling device by cooling coil.
2. two cold handpiece Water Chilling Units according to claim 1, is characterized in that described pair is serially connected with device for drying and filtering, liquid-sighting glass between cool condenser and expansion throttling device.
3. two cold handpiece Water Chilling Units according to claim 2, it is characterized in that the exhaust outlet of described compressor is connected with the air inlet of oil eliminator, the oil-out of described oil eliminator is connected with the oil-in of compressor by an oil return apparatus, and described oil return apparatus is made up of the oil strainer of connecting and oil return solenoid valve; The gas outlet of described oil eliminator is connected with the entrance of two cool condenser, the outlet of two cool condenser is connected with the entrance of described evaporimeter by device for drying and filtering, liquid-sighting glass, expansion throttling device, described evaporator outlet is connected with the air entry of compressor, the outlet of described compressor is connected with the entrance of compressor by an injection oil return device, described injection oil return device is made up of the ejecting scavenge return magnetic valve of connecting and injector, and described injector is connected with the oil return pipe of evaporimeter.
4. two cold handpiece Water Chilling Units according to claim 1, is characterized in that described shower water circulating pump is furnished with electric heater; Described catch basin is furnished with electric heater unit and catch basin heat insulation wall.
5. the two cold handpiece Water Chilling Units according to claim 1 or 2 or 3 or 4, it is characterized in that described chilled water EGR comprises the chilled water circulating pump and check valve be cascaded, and between the import and export of described chilled water EGR, parallel pipeline is provided with self-operated type differential-pressure bypass valve; Between the import and export of described chilled water EGR, series pipe is provided with spiral degassing scummer, the second water treatment facilities and online ball cleaning apparatus.
6. two cold handpiece Water Chilling Units according to claim 5, series pipe between the import and export that it is characterized in that described chilled water EGR is also provided with blowoff valve, the second automatic water-replenishing device and level pressure expansion drum, and described level pressure expansion drum is provided with adjustable safety valve.
7. two cold handpiece Water Chilling Units according to claim 6, it is characterized in that this pair of cold handpiece Water Chilling Units is provided with control device, the water inlet of described chilled water EGR is provided with the second pressure sensor, the second temperature sensor; The water outlet of described chilled water EGR is provided with the first pressure sensor, three-temperature sensor, discharge switch, frost prevention switch; The 3rd pressure sensor is provided with between described oil eliminator and two cool condenser; The first temperature sensor is provided with between described spray equipment and the first water treatment facilities; Described control device is connected with compressor with the first pressure sensor, the second pressure sensor, the 3rd pressure sensor, the first temperature sensor, the second temperature sensor, three-temperature sensor, discharge switch, frost prevention switch, chilled water circulating pump, shower water circulating pump, cooling blower respectively.
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| CN106839518A (en) * | 2017-03-21 | 2017-06-13 | 昆山台佳机电有限公司 | The double cold and hot pump assemblys of integral type |
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