CN205049328U - Thermostatic expansion valve performance contrast laboratory bench - Google Patents
Thermostatic expansion valve performance contrast laboratory bench Download PDFInfo
- Publication number
- CN205049328U CN205049328U CN201520647344.1U CN201520647344U CN205049328U CN 205049328 U CN205049328 U CN 205049328U CN 201520647344 U CN201520647344 U CN 201520647344U CN 205049328 U CN205049328 U CN 205049328U
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- Prior art keywords
- expansion valve
- heating power
- power expansion
- valve
- outlet
- Prior art date
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- 238000010438 heat treatment Methods 0.000 claims description 75
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- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminum Chemical compound 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[Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N copper Chemical compound 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[Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 208000008425 Protein Deficiency Diseases 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010835 comparative analysis Methods 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000008236 heating water Substances 0.000 description 1
- 230000001105 regulatory Effects 0.000 description 1
- 239000006200 vaporizer Substances 0.000 description 1
Abstract
The utility model discloses a thermostatic expansion valve performance contrast laboratory bench. This laboratory bench provides the thermostatic expansion valve to different forms, different model, different basic parameter and carries out refrigerating output test and the laboratory bench of expansion valve to the entire system influence. The inner equilibrium type thermostatic expansion valve that this laboratory bench can contrast same refrigerating output reaches the influence to entire system with outer balanced type thermostatic expansion valve refrigerating output under same operating mode, can carry out the contrast of refrigerating output and select nominal refrigerating output bigger than normal and the influence of nominal refrigerating output thermostatic expansion valve less than normal to system performance the outer balanced type thermostatic expansion valve of the nominal refrigerating output of difference and the different inner equilibrium type thermostatic expansion valve of nominal refrigerating output, can also simulate different outdoor side heat transfer temperature tests same thermostatic expansion valve's refrigerating output.
Description
Technical field
The utility model relates to a kind of thermal expansion performance comparison experiment table, belongs to refrigeration instructional technology field.
Background technology
In refrigeration system, restriction device is as one of large part of refrigeration four, is the vitals of refrigeration system.Restriction device carries out reducing pressure by regulating flow to high pressure liquid refrigerant, ensures the pressure differential between condenser and evaporator, to make the evaporation endothermic under the low pressure required of the liquid refrigerant in evaporator, thus reaches the object of refrigeration cool-down; Make the exothermic condensation under given high pressure of the gaseous refrigerant in condenser simultaneously.Regulate the refrigerant flow feeding evaporator, to adapt to the change of evaporator thermal load, thus avoid because some refrigerant does not gasify in evaporator and enter refrigeration compressor, causing Wet Compression even to rush cylinder accident; Or because of feed flow deficiency, cause the heat transfer area of evaporator not play one's part to the full, cause refrigeration compressor air suction pressure to reduce, refrigerating capacity declines.Current refrigeration system is commonly used expansion valve and is mainly contained heating power expansion valve, electric expansion valve and kapillary.
Heating power expansion valve controls expansion valve opening by the evaporator outlet gaseous refrigerant degree of superheat, is widely used in non-flooded evaporator.Heating power expansion valve can be divided into internal balance type and outer balanced type according to the difference of balance mode.Internal balance type heating power expansion valve is made up of spool, valve seat, elastic metallic diaphragm, spring, temperature-sensitive bag and adjustment screw etc.The structure of outer balanced type heating power expansion valve is substantially identical with internal balance type heating power expansion valve, be that elastic metallic diaphragm lower space and expansion valve outlet are not connected, but be connected with evaporator outlet by a small-bore balance pipe, like this, the pressure of evaporator outlet cold-producing medium is born in diaphragm bottom, thus eliminates the impact of evaporator inner refrigerant resistance to flow.
At present, the teaching methods such as model that adopt are demonstrated expansion valve principle of work and refrigeration more.Only have a kind of heating power expansion valve in refrigeration system, can not compare intuitively the heating power expansion valve of multi-form, different model and different basic parameter.Therefore the utility model proposes a kind of experiment table that can the heating power expansion valve of multi-form, different model, different basic parameter be carried out refrigeration and is analyzed systematic influence.
Utility model content
The purpose of this utility model is to provide a kind of heating power expansion valve on multi-form, different model, different basic parameter and carries out the experiment table that refrigeration capacity test and expansion valve affect whole system.
In order to realize above-mentioned functions, the technical solution of the utility model is as follows:
Heating power expansion valve performance comparison experiment table, comprises compressor 11, condenser 12, fluid reservoir 13, heating power expansion valve 14, heat interchanger 15, gas-liquid separator 16, water pump 17, attemperater 18, well heater 19, stop valve 21, y-type filter 22, non-return valve 23, solenoid valve 24, pressure governor 25, power meter 31, first-class gauge 32, thermometer 33, tensimeter 34, second gauge 35, first stop valve 36, second stop valve 37 and the 3rd stop valve 38;
Described compressor 11 comprises exhausr port and air entry.Exhaust outlet of compressor is connected with air-cooled condenser 12 refrigerant inlet, air-cooled condenser 12 refrigerant outlet is connected with high pressure fluid reservoir 13, high pressure fluid reservoir 13 exports and is connected with pressure governor 25 entrance, pressure governor 25 exports and is connected with first-class gauge 32 entrance, first-class gauge 32 one or more groups heating power expansion valve 14 in parallel with between heat interchanger 15, a stop valve 21 is connected before each heating power expansion valve 14, heating power expansion valve 14 exports and is connected with heat interchanger 15 refrigerant side entrance, the outlet of heat interchanger 15 refrigerant side is connected with gas-liquid separator 16 entrance, gas-liquid separator 16 outlet is connected with compressor 11 air entry,
Described attemperater 18 comprises recirculated water entrance, circulating water outlet and discharge opening; Described circulating water outlet is connected with the first stop valve 36, first stop valve 36 is connected with filtrator 22, filtrator 22 is connected with water circulating pump 17 entrance, water circulating pump 17 exports and is connected with non-return valve 23, non-return valve 23 is connected with solenoid valve 24, and solenoid valve 24 is connected with second gauge 35 entrance, and second gauge 35 exports and is connected with the side-entrance of heat interchanger 15 water, heat interchanger 15 water side outlet is connected with the second stop valve 37, and the second stop valve 37 is connected with attemperater 18 recirculated water entrance; Attemperater discharge opening is connected with the 3rd stop valve 38, mounting heater 19 in attemperater, well heater 19 installation power meter 31;
Thermometer 33 and tensimeter 34 are installed between first-class gauge and heating power expansion valve, between condenser 12 and compressor, between heating power expansion valve and heat interchanger, between heat interchanger and gas-liquid separator respectively; Between second gauge and heat interchanger, between heat interchanger and the second stop valve, in attemperater, respectively thermometer is installed.
Described compressor 11 can be invariable frequency compressor also can be frequency-changeable compressor.Described condenser 12 is air cooled condenser.Described heating power expansion valve 14 can be one group of inner equilibrium type heating power expansion valve and the same pattern heating power expansion valve of outer balanced type heating power expansion valve, one group of way flow heating power expansion valve and bidirectional flow heating power expansion valve, one group of different refrigerating capacity, described heating power expansion valve can separately in groups also can several groups install simultaneously.Described heat interchanger 15 can be double-tube heat exchanger, case tube heat exchanger and plate type heat exchanger.Described surface cooler 14 is copper pipe aluminum fin formula surface cooler.Described water pump 17 can be that to determine frequency water pump also can be variable frequency pump.Described well heater 19 is electrical heating.Described flowmeter 32 can be volumeter also can be mass flowmeter.
The concrete following beneficial effect of the utility model:
This experiment table can contrast inner equilibrium type heating power expansion valve and outer balanced type heating power expansion valve refrigerating capacity and the impact on whole system under same operating of same refrigerating capacity; Can the contrast of refrigerating capacity be carried out on the inner equilibrium type heating power expansion valve of the outer balanced type heating power expansion valve of the nominal refrigerating capacity of difference with difference nominal refrigerating capacity and select nominal refrigerating capacity bigger than normal and nominal refrigerating capacity heating power expansion valve less than normal on the impact of system performance; The refrigerating capacity of heat-exchange temperature to same heating power expansion valve outside different chamber can also be simulated test.Achieve and the heating power expansion valve of multi-form, different model and different basic parameter is intuitively compared.
Accompanying drawing explanation
Fig. 1 is a kind of heating power expansion valve performance comparison of the utility model experiment table schematic diagram.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
A kind of heating power expansion valve performance comparison of the utility model experiment table, comprises compressor 11, condenser 12, fluid reservoir 13 as shown in Figure 1, heating power expansion valve 14, heat interchanger 15, gas-liquid separator 16, water pump 17, heating water tank 18, well heater 19, stop valve 21, filtrator 22, non-return valve 23, solenoid valve 24, pressure governor 25, power meter 31, first-class gauge 32, thermometer 33, tensimeter 34, second gauge 35, first stop valve 36, second stop valve 37 and the 3rd stop valve 38.
Compressor of telling 11 can be invariable frequency compressor also can be frequency-changeable compressor.Described condenser 12 is air cooled condenser.Described heating power expansion valve 14 can be one group of inner equilibrium type heating power expansion valve and the same pattern heating power expansion valve of outer balanced type heating power expansion valve, one group of way flow heating power expansion valve and bidirectional flow heating power expansion valve, one group of different refrigerating capacity, described heating power expansion valve can separately in groups also can several groups install simultaneously.Described heat interchanger 15 can be double-tube heat exchanger, case tube heat exchanger and plate type heat exchanger.Described surface cooler 14 is copper pipe aluminum fin formula surface cooler.Described water pump 17 can be that to determine frequency water pump also can be variable frequency pump.Described well heater 19 is electrical heating.Described flowmeter 32 can be volumeter also can be mass flowmeter.
Described compressor 11 comprises exhausr port and air entry.Exhaust outlet of compressor is connected with air-cooled condenser 12 refrigerant inlet, air-cooled condenser 12 refrigerant outlet is connected with high pressure fluid reservoir 13, high pressure fluid reservoir 13 exports and is connected with pressure governor 25 entrance, pressure governor 25 exports and is connected with first-class gauge 32 entrance, first-class gauge 32 one or more groups heating power expansion valve 14 in parallel with between heat interchanger 15, a stop valve 21 is connected before each heating power expansion valve 14, heating power expansion valve 14 exports and is connected with heat interchanger 15 refrigerant side entrance, the outlet of heat interchanger 15 refrigerant side is connected with gas-liquid separator 16 entrance, gas-liquid separator 16 outlet is connected with compressor 11 air entry.
Described attemperater 18 comprises recirculated water entrance, circulating water outlet and discharge opening; Described circulating water outlet is connected with the first stop valve 36, first stop valve 36 is connected with filtrator 22, filtrator 22 is connected with water circulating pump 17 entrance, water circulating pump 17 exports and is connected with non-return valve 23, non-return valve 23 is connected with solenoid valve 24, and solenoid valve 24 is connected with second gauge 35 entrance, and second gauge 35 exports and is connected with the side-entrance of heat interchanger 15 water, heat interchanger 15 water side outlet is connected with the second stop valve 37, and the second stop valve 37 is connected with attemperater 18 recirculated water entrance; Attemperater discharge opening is connected with the 3rd stop valve 38, mounting heater 19 in attemperater, well heater 19 installation power meter 31.
Thermometer 33 and tensimeter 34 are installed between first-class gauge and heating power expansion valve, between condenser 12 and compressor, between heating power expansion valve and heat interchanger, between heat interchanger and gas-liquid separator respectively; Between second gauge and heat interchanger, between heat interchanger and the second stop valve, in attemperater, respectively thermometer is installed.
Containing the same refrigerating capacity of one or more groups different types or the heating power expansion valve with the different refrigerating capacity of pattern in system.One of them heating power expansion valve is selected during experiment, stop valve before all the other heating power expansion valves is selected to close, pressure governor is transferred to setting value, by the evaporating temperature of setting Water in Water Tank temperature controlling system after system cloud gray model, after making system cloud gray model steadily, by refrigerant liquid flow meter method, dry type cold-producing medium calorimeter method or thermal equilibrium valve measuring system refrigerating capacity now, recorded the power input of now compressor again by power meter, obtained the coefficient of performance of refrigerating of system under this heating power expansion valve by the ratio of refrigerating capacity and power input.Other heating power expansion valve of switch test again by valve after testing, finally obtains the refrigerating capacity of each heating power expansion valve under same operating and the coefficient of performance.The relative merits of various heating power expansion valve can be obtained intuitively by comparative analysis.
The measurement of system to refrigerating capacity comprises refrigerant liquid flow meter method, dry type cold-producing medium calorimeter method and vaporizer side heat balance method of.
Install refrigerant liquid flowmeter body in system additional, refrigerant liquid flowmeter body is measure the refrigerant liquid flow in refrigeration cycle, and can use integrating formula or indicating type flowmeter, refrigerant flow is in units of volume or quality.Flowmeter is arranged on the fluid pipeline between condenser and expansion valve.By to the measurement entering evaporator inlet-outlet pressure and temperature, check in the specific enthalpy before and after evaporator, calculated the refrigerating capacity of system by the product of enthalpy difference and mass rate.
The refrigerant liquid that compressor carries out circulating evaporates and overheated in heat interchanger.Heat interchanger opposite side passes into heat hot water, provides heat that tube refrigerant is evaporated and overheated required heat by hot water.Water circulating pipe installs flowmeter, and calculate by measuring heat exchanger inlet and outlet water temperature and flowmeter the heat that hot water provides, the heat that hot water provides is the refrigerating capacity of system.
The refrigerant liquid that compressor carries out circulating evaporates and overheated in heat interchanger, and heat interchanger opposite side passes into hot water, and hot water heat is provided by water tank electric heater.After water tank water temperature is equilibrated at uniform temperature, the power input of electric heater is the refrigerating capacity of system.
Can record, control and gather by PID regulation technology and remote collection, mechanics of communication running status and the operational factor of experiment table.
Claims (6)
1. a heating power expansion valve performance comparison experiment table, it is characterized in that, comprise compressor (11), condenser (12), fluid reservoir (13), heating power expansion valve (14), heat interchanger (15), gas-liquid separator (16), water pump (17), attemperater (18), well heater (19), stop valve (21), filtrator (22), non-return valve (23), solenoid valve (24), pressure governor (25), power meter (31), first-class gauge (32), thermometer (33), tensimeter (34), second gauge (35), first stop valve (36), second stop valve (37) and the 3rd stop valve (38),
Described compressor (11) comprises exhausr port and air entry, exhaust outlet of compressor is connected with condenser (12) refrigerant inlet, condenser (12) refrigerant outlet is connected with high pressure fluid reservoir (13), high pressure fluid reservoir (13) outlet is connected with pressure governor (25) entrance, pressure governor (25) outlet is connected with first-class gauge (32) entrance, one or more groups heating power expansion valve (14) in parallel between first-class gauge (32) with heat interchanger (15), each heating power expansion valve (14) front connection stop valve (21), heating power expansion valve (14) outlet is connected with heat interchanger (15) refrigerant side entrance, the outlet of heat interchanger (15) refrigerant side is connected with gas-liquid separator (16) entrance, gas-liquid separator (16) outlet is connected with compressor (11) air entry,
Described attemperater (18) comprises recirculated water entrance, circulating water outlet and discharge opening;
Described circulating water outlet is connected with the first stop valve (36), first stop valve (36) is connected with filtrator (22), filtrator (22) is connected with water circulating pump (17) entrance, water circulating pump (17) outlet is connected with non-return valve (23), non-return valve (23) is connected with solenoid valve (24), solenoid valve (24) is connected with second gauge (35) entrance, second gauge (35) outlet is connected with heat interchanger (15) water side-entrance, heat interchanger (15) water side outlet is connected with the second stop valve (37), second stop valve (37) is connected with attemperater (18) recirculated water entrance, attemperater discharge opening is connected with the 3rd stop valve (38), mounting heater (19) in attemperater, well heater (19) installation power meter (31),
Thermometer (33) and tensimeter (34) are installed between first-class gauge (32) and heating power expansion valve (14), between condenser (12) and compressor (11), between heating power expansion valve (14) and heat interchanger (15), between heat interchanger (15) and gas-liquid separator (16) respectively; Between second gauge (35) and heat interchanger (15), between heat interchanger (15) and the second stop valve (37), in attemperater (18), thermometer (33) is installed respectively.
2. a kind of heating power expansion valve performance comparison experiment table according to claim 1, is characterized in that: described compressor (11) can be invariable frequency compressor also can be frequency-changeable compressor.
3. a kind of heating power expansion valve performance comparison experiment table according to claim 1, it is characterized in that, described heating power expansion valve is one group of inner equilibrium type heating power expansion valve and outer balanced type heating power expansion valve or one group of way flow heating power expansion valve and bidirectional flow heating power expansion valve or the same pattern heating power expansion valve of one group of different refrigerating capacity, described heating power expansion valve separately in groups or several groups install simultaneously.
4. a kind of heating power expansion valve performance comparison experiment table according to claim 1, it is characterized in that, described heat interchanger is double-tube heat exchanger, case tube heat exchanger or plate type heat exchanger.
5. a kind of heating power expansion valve performance comparison experiment table according to claim 1, is characterized in that, described water pump can be that to determine frequency water pump also can be variable frequency pump.
6. a kind of heating power expansion valve performance comparison experiment table according to claim 1, it is characterized in that, described flowmeter is volumeter or mass flowmeter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520647344.1U CN205049328U (en) | 2015-08-25 | 2015-08-25 | Thermostatic expansion valve performance contrast laboratory bench |
Applications Claiming Priority (1)
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