CN204187901U - Refrigerator heat exchanger performance measure and control device - Google Patents
Refrigerator heat exchanger performance measure and control device Download PDFInfo
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- CN204187901U CN204187901U CN201420545342.7U CN201420545342U CN204187901U CN 204187901 U CN204187901 U CN 204187901U CN 201420545342 U CN201420545342 U CN 201420545342U CN 204187901 U CN204187901 U CN 204187901U
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Abstract
The utility model discloses a kind of refrigerator heat exchanger performance measure and control device, form loop by compressor, secondary unit, the first bypass hand valve, device for drying and filtering, hot gas path, flowmeter, heat tape, electric expansion valve, the second bypass hand valve, cold air path and evaporimeter by pipeline; Secondary unit comprises condenser, electrical heating, auxiliary evaporator and heat exchange medium, and auxiliary evaporator and auxiliary compressor, auxiliary condenser and capillary are connected to form loop by pipeline; First bypass hand valve two ends connect tested condenser by the first control valve; Second bypass hand valve two ends connect tested evaporimeter by the second control valve; Also comprise heat exchanger performance parameter data acquisition measuring mechanism.The utility model adopts the cold and heat recovery of refrigerant-refrigerant, refrigerant-air and system self-heating, shorten system pipeline length as far as possible, reduce the intermediate medium of energy transferring, effectively can weaken the impact of external factor on Mini-type heat exchanger observing and controlling, thus realize the high precision measurement of system.
Description
Technical field
The utility model relates to detection technique field, specifically a kind of refrigerator heat exchanger performance measure and control device.
Background technology
At present, the testing stand that can be used in measuring heat exchanger performance is very many, and method of testing is a lot, and most of is that refrigerant liquid discharge method is to measure the refrigerating capacity of heat exchanger.Namely under nominal condition, measure the specific enthalpy of tested heat exchanger inlet and outlet cold-producing medium and flow through the refrigerant mass fluxes of tested heat exchanger, difference and the product of the mass flow flowing through tested heat exchanger of the specific enthalpy of heat exchanger inlet and outlet cold-producing medium are the nominal refrigerating capacity of this tested heat exchanger.
People are from the change of the cognition to refrigerator on the one hand: from refrigerator comes out, as long as the requirement of people to refrigerator can be freezed and how not too much concern to its performance, along with the development of society, to the requirement of refrigerator, people are no longer whether it can freeze so simple, slowly give more concern to its performance, particularly country propose energy-saving and emission-reduction policy after, people just more pay close attention to the performance of refrigerator, so can provide a kind of device can tested refrigerator heat exchanger performance just particularly exigence.
On the other hand because the heat exchange amount of evaporator of refrigerator and condenser is smaller, the cold medium flux of system is less, the impact of change on test of external environment condition is larger, measuring accuracy is difficult to control, the performance of accurate test refrigerator heat exchanger is also more difficult, not this specially for the testing arrangement of refrigerator heat exchanger (Mini-type heat exchanger) in the market.
Therefore, for above-mentioned situation, develop a refrigerator heat exchanger performance measure and control device.
Utility model content
The utility model, for above-mentioned Problems existing, provides a kind of refrigerator heat exchanger performance measure and control device.
The utility model for achieving the above object, takes following technical scheme to be achieved:
A kind of refrigerator heat exchanger performance measure and control device, comprise compressor, secondary unit, the first bypass hand valve, device for drying and filtering, bushing type heat regenerator, flowmeter, heat tape, electric expansion valve, the second bypass hand valve, evaporimeter, controller, data acquisition unit and industrial computer; Described bushing type heat regenerator comprises hot gas path and cold air path; Described compressor outlet is connected with suction port of compressor after connecting secondary unit, the first bypass hand valve, device for drying and filtering, hot gas path, flowmeter, heat tape, electric expansion valve, the second bypass hand valve, cold air path and evaporimeter successively; Described secondary unit comprises condenser, electrical heating, auxiliary evaporator and heat exchange medium, and described auxiliary evaporator and auxiliary compressor, auxiliary condenser and capillary are connected to form loop by pipeline head and the tail; Described first bypass hand valve two ends are connected with tested condenser by the first control valve; Described second bypass hand valve two ends are connected with tested evaporimeter by the second control valve; Described tested condenser is imported and exported and is respectively equipped with the first temperature sensor and the second temperature sensor, and described tested condenser inlet is provided with the first pressure sensor, and described tested condenser and tested evaporimeter two ends are all connected with pressure detector; Described heat tape outlet is provided with three-temperature sensor and the second pressure sensor; Described tested evaporator outlet is provided with the 4th temperature sensor and the 3rd pressure sensor; Described compressor, secondary unit, flowmeter, heat tape, electric expansion valve, the first temperature sensor, the first pressure sensor, three-temperature sensor, the second pressure sensor and the 3rd pressure sensor be connection control device respectively, described controller connects industrial computer, and described second temperature sensor, differential pressure pickup and the 4th temperature sensor be connection data collector and industrial computer respectively.
Preferably, described controller is PID controller, comprise the first controller, second controller, the 3rd controller and the 4th controller, described compressor, the first pressure sensor, the 3rd pressure sensor connect the first controller respectively, described secondary unit, the first temperature sensor, the second pressure sensor connect second controller respectively, described flowmeter and electric expansion valve are connected the 3rd controller respectively, and described heat tape and three-temperature sensor are connected the 4th controller respectively; Described first controller, second controller, the 3rd controller are connected industrial computer with the 4th controller, and described second temperature sensor, differential pressure pickup and the 4th temperature sensor be connection data collector and industrial computer respectively.
Preferably, the wind wing passage series connection of described auxiliary condenser and evaporimeter.First allow air and evaporator heat exchange, then allow cooled air and auxiliary condenser heat exchange, by the heat transmission of refrigerant-air-refrigerant, realize the recycling of system thermal.
In the technical solution of the utility model, for the accuracy of guaranteed flow measurement amount, must the liquid before guaranteed flow meter be subcooled liquid, therefore, cooling twice must be carried out to it, low-temp low-pressure refrigerant and middle temperature high pressure refrigerant are carried out heat exchange by bushing type heat regenerator, thus the refrigerant before flow meter carried out cold treatment, by the heat transmission of refrigerant-refrigerant, both test request can be met, can be reduced to again and realize this purpose and a set of refrigerating plant of increasing, and then reduce the investment of whole system and the waste of additional energy source.
Described secondary unit comprises condenser, electrical heating, auxiliary evaporator and heat exchange medium R123, and described auxiliary evaporator and auxiliary compressor, auxiliary condenser and capillary are connected to form loop by pipeline head and the tail.Secondary unit both can use as System Heater, also can use as systems chiller, and when using as heater, closing auxiliary compressor, opening electrical heating, heat is by electrical heating-R123 medium-condenser transmission.When using as cooler, closing electrical heating, opening auxiliary compressor, heat is by auxiliary evaporator-R123 medium-condenser transmission.Thus realize the direct transmission of refrigerant-refrigerant heat.
The beneficial effects of the utility model are as follows: the utility model grows out of nothing, and develop Promethean refrigerator heat exchanger performance measure and control device.For this difficult point of test and comparison difficulty of refrigerator heat exchanger performance, the utility model refrigerator heat exchanger measure and control device is to traditional refrigerant-water, the heat of water-air transmits form and transforms, adopt refrigerant-refrigerant, the cold and heat recovery of refrigerant-air and system self-heating, reach and shorten system pipeline length as much as possible, reduce the intermediate medium of energy transferring, and then effectively can weaken the impact of external factor on Mini-type heat exchanger observing and controlling, thus realize the high precision measurement of system, and the heat of system is recycled as much as possible, and then reduce the dependence of the cold and hot supply of system external circle, be conducive to the independence of TT&C system, be conducive to the commercialization realizing system, energy-saving.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of a kind of refrigerator heat exchanger performance of the utility model measure and control device;
Fig. 2 is the utility model heat exchanger performance parameter data acquisition and control schematic diagram;
Fig. 3 is the structural representation of the utility model secondary unit;
Wherein, 1-compressor, 2-secondary unit, 3-first bypass hand valve, 4-device for drying and filtering, 5-bushing type heat regenerator, 6-flowmeter, 7-heat tape, 8-electric expansion valve, 9-second bypass hand valve, 10-evaporimeter, the tested condenser of 11-, the tested evaporimeter of 12-, 13-first control valve, 14-second control valve, 15-first temperature sensor, 16-second temperature sensor, 17-first pressure sensor, 18-pressure detector, 19-three-temperature sensor, 20-second pressure sensor, 21-condenser, 22-electrical heating, 23-auxiliary evaporator, 24-heat exchange medium, 25-auxiliary compressor, 26-auxiliary condenser, 27-capillary, 28-the 4th temperature sensor, 29-the 3rd pressure sensor, 30-first controller, 31-second controller, 32-the 3rd controller, 33-the 4th controller, 34-data acquisition unit, 35-industrial computer.
Detailed description of the invention
Below in conjunction with accompanying drawing, embodiment of the present utility model is described in detail.
See Fig. 1 ~ 3, a kind of refrigerator heat exchanger performance measure and control device, comprise compressor 1, secondary unit 2, first bypass hand valve 3, device for drying and filtering 4, bushing type heat regenerator 5, flowmeter 6, heat tape 7, electric expansion valve 8, second bypass hand valve 9, evaporimeter 10, controller, data acquisition unit 34 and industrial computer 35.
Bushing type heat regenerator 5 comprises hot gas path and cold air path; Compressor 1 is connected with compressor 1 entrance after exporting and connecting secondary unit 2, first bypass hand valve 3, device for drying and filtering 4, hot gas path, flowmeter 6, heat tape 7, electric expansion valve 8, second bypass hand valve 9, cold air path and evaporimeter 10 successively.
For the accuracy that guaranteed flow meter 6 is measured, must the liquid before guaranteed flow meter 6 be subcooled liquid, therefore, cooling twice must be carried out to it, low-temp low-pressure refrigerant and HTHP refrigerant are carried out heat exchange by bushing type heat regenerator 5, thus the refrigerant before flow meter 6 carried out cold treatment, by the heat transmission of refrigerant-refrigerant, both test request can be met, can be reduced to again and realize this purpose and a set of refrigerating plant of increasing, and then reduce the investment of whole system and the waste of additional energy source.
See Fig. 3, secondary unit 2 comprises condenser 21, electrical heating 22, auxiliary evaporator 23 and heat exchange medium 24, and auxiliary evaporator 23 is connected to form loop with auxiliary compressor 25, auxiliary condenser 26 and capillary 27 by pipeline head and the tail.Secondary unit 2 both can use as System Heater, also can use as systems chiller, and when using as heater, closing auxiliary compressor 25, opening electrical heating 22, heat is by electrical heating-heat exchange medium-condenser transmission.When using as cooler, closing electrical heating 22, opening auxiliary compressor 25, heat is by auxiliary evaporator-heat exchange medium-condenser transmission.Thus realize the direct transmission of refrigerant-refrigerant heat.
First bypass hand valve 3 two ends are connected with tested condenser 11 by the first control valve 13; Second bypass hand valve 9 two ends are connected with tested evaporimeter 12 by the second control valve 14.Tested condenser 11 is imported and exported and is respectively equipped with the first temperature sensor 15 and the second temperature sensor 16, and the import of tested condenser 11 is provided with the first pressure sensor 17, and tested condenser 11 is all connected with differential pressure pickup 18 with tested evaporimeter 12 two ends.Heat tape 7 outlet is provided with three-temperature sensor 19 and the second pressure sensor 20.Tested evaporimeter 12 outlet is provided with the 4th temperature sensor 28 and the 3rd pressure sensor 29.According to detection needs, differential pressure pickup 18 is removably mounted on tested condenser 11 or tested evaporimeter 12 two ends.
Controller is PID controller, comprise the first controller 30, second controller 31, the 3rd controller 32 and the 4th controller 33, compressor 1, first pressure sensor 17, the 3rd pressure sensor 29 connect the first controller 30 respectively, secondary unit 2, first temperature sensor 15, second pressure sensor 20 connects second controller 31 respectively, flowmeter 6 and electric expansion valve 8 are connected the 3rd controller 32 respectively, and heat tape 7 and three-temperature sensor 19 are connected the 4th controller 33 respectively; First controller 30, second controller 31, the 3rd controller 32 are connected industrial computer 35 respectively with the 4th controller 33, and the second temperature sensor 16, differential pressure pickup 18 and the 4th temperature sensor 28 be connection data collector 34 and industrial computer 35 respectively.
The wind wing passage series connection of auxiliary condenser 26 and evaporimeter 10.First allow air and evaporimeter 10 heat exchange, then allow cooled air and auxiliary condenser 26 heat exchange, by the heat transmission of refrigerant-air-refrigerant, realize the recycling of system thermal.
When the utility model device uses as condenser test platform, close the first bypass hand valve 3 and the second control valve 14, open the second bypass hand valve 9 and the first control valve 13; When using as evaporimeter test platform, closing the second bypass hand valve 9 and the first control valve 13, opening the first bypass hand valve 3 and the second control valve 14.
According to testing standard, condenser test needs to control the condensing pressure of tested condenser 11, the degree of superheat of tested condenser 11 outlet, tested condenser 11 inlet temperature; Evaporimeter test needs to control tested evaporimeter 12 outlet pressure, temperature before the upstream pressure of tested evaporimeter 12 and valve, the degree of supercooling that tested evaporimeter 12 exports.
Evaporator exit pressure, condenser inlet pressure can be realized by the frequency conversion of test compression machine, increase compressor frequency, and condensing pressure increases, and evaporating pressure reduces, and vice versa.
Detect for condenser and evaporimeter below and make an explanation respectively:
One, condenser test:
Close the first bypass hand valve 3 and the second control valve 14, open the second bypass hand valve 9 and the first control valve 13.
The control of tested condenser 11 inlet pressure is realized by compressor 1 frequency conversion, first controller 30 sets the goal pressure under standard condition, pressure signal transmission is given the first controller 30 by the first pressure sensor 17 of tested condenser 11 import, the pressure signal received and goal pressure compare by the first controller 30, when both are different, export corresponding signal transmission to compressor 1, regulate the frequency of compressor 1, until pressure balance.
The control of tested condenser 11 inlet temperature is exported by the electrical heating 22 in secondary unit 2 and realizes, now, secondary unit 2 uses as a heater, second controller 31 sets the target temperature under standard condition, temperature signal is passed to second controller 31 by the first temperature sensor 15 of tested condenser 11 import, the temperature signal received and target temperature compare by second controller 31, when both are different, export corresponding signal, pass to the control element (PAC power regulating eqiupment) of electrical heating 22, and then control the size of electrical heating 22 output, until balance.
Tested condenser 11 outlet superheat degree controls to realize mainly through the refrigerant flow of control flow check through tested condenser 11, temperature signal is passed to industrial computer 35 by data acquisition unit 34 by the second temperature sensor 16 that tested condenser 11 exports, industrial computer 35 carries out PID arithmetic according to target superheat degree and the actual measurement degree of superheat, draw a corresponding target cold medium flux, then by target cold medium flux write the 3rd controller 32, cold medium flux meter 6 will survey cold medium flux Signal transmissions accordingly to the 3rd controller 32 simultaneously, the flow of actual measurement and target flow compare by the 3rd controller 32, when both are different, export a signal controlling cold medium flux size to electric expansion valve 8, and then realize cold medium flux, the automatic control of outlet superheat degree.
In sum, after system stable operation, by tested condenser 11 out temperature sensor 15,16, inlet pressure sensor 17, pressure detector 18, mass flowmenter 5, measures the out temperature of tested condenser 11, pressure respectively and flows through the mass flow of tested condenser 11, these parameters are all delivered in testing software and are carried out analytic operation, finally draw the performance (thermal discharge) of this tested condenser 11.
Two, evaporimeter test:
Close the second bypass hand valve 9 and the first control valve 13, open the first bypass hand valve 3 and the second control valve 14.
The control of tested evaporimeter 12 outlet pressure is realized by compressor 1 frequency conversion, first controller 30 sets the goal pressure under standard condition, pressure signal transmission is given the first controller 30 by the 3rd pressure sensor 19 that tested evaporimeter 12 exports, the pressure signal received and goal pressure compare by the first controller 30, when both are different, export corresponding signal transmission to compressor 1, regulate the frequency of compressor 1, until pressure balance.
Tested evaporimeter 12 sub-cooled liquid temperature controls the heat tape 7 before mainly through control electric expansion valve 8 and realizes, now secondary unit uses as cooler, the high temperature and high pressure gas that compressor 1 exports becomes the liquid (or gas-liquid two-phase) of middle temperature high pressure by the cooling effect of secondary unit 2, the subcooled liquid of middle temperature high pressure is become again by the cooling twice of tube-in-tube heat exchanger 5, again by flowmeter 6 measuring flow, then readjustment is heated, until temperature before meeting the requirements of valve by heat tape 7.4th controller 33 sets temperature before the target valve under standard condition, temperature signal is passed to the 4th controller 33 by the three-temperature sensor 19 that heat tape 7 exports, temperature before the temperature signal received and target valve compares by the 4th controller 33, when both are different, export corresponding signal, pass to the control element (PAC power regulating eqiupment) of heat tape 7, and then control the size of heat tape 7 output, until temperature signal is identical with temperature before target valve.
The control of tested evaporimeter 12 upstream pressure is realized by the electrical heating 22 in calorimeter 2, second controller 31 sets the goal pressure under standard condition, the second pressure sensor 20 before tested evaporimeter 12 valve by pressure signal transmission to second controller 31, the pressure signal received and goal pressure compare by second controller 31, when both are different, pass to the control element (PAC power regulating eqiupment) of electrical heating 22, and then control the size of electrical heating 22 output, until pressure balance.
Tested evaporimeter 12 outlet subcooling Principles of Regulation are identical with the Principles of Regulation of tested condenser 11 outlet superheat degree.
The performance software for calculation of tested evaporimeter 12 and principle are tested identical with tested condenser 11.
According to the refrigerator heat exchanger TT&C system of native system design, can to test site require seldom (only needing to provide power supply) when, that can measure heat exchanger accurately heats refrigerating capacity, significant to the further optimizing and matching of refrigerator design and system.
The utility model grows out of nothing, and develops Promethean refrigerator heat exchanger performance measure and control device.For this difficult point of test and comparison difficulty of refrigerator heat exchanger performance, the utility model refrigerator heat exchanger measure and control device is to traditional refrigerant-water, the heat of water-air transmits form and transforms, adopt refrigerant-refrigerant, the cold and heat recovery of refrigerant-air and system self-heating, reach and shorten system pipeline length as much as possible, reduce the intermediate medium of energy transferring, and then effectively can weaken the impact of external factor on Mini-type heat exchanger observing and controlling, thus realize the high precision measurement of system, and the heat of system is recycled as much as possible, and then reduce the dependence of the cold and hot supply of system external circle, be conducive to the independence of TT&C system, be conducive to the commercialization realizing system, energy-saving.
Only as described above, be only the preferred embodiment of the utility model, when can not limit the scope of the utility model enforcement with this, namely generally according to equivalence change simple done by the content described in the utility model claim and utility model description and modification, all still belong within the utility model claim scope.In addition, summary part and title are only used to the use of auxiliary patent document search, are not used for the interest field of restriction the utility model.
Claims (3)
1. a refrigerator heat exchanger performance measure and control device, it is characterized in that, comprise compressor, secondary unit, the first bypass hand valve, device for drying and filtering, bushing type heat regenerator, flowmeter, heat tape, electric expansion valve, the second bypass hand valve, evaporimeter, controller, data acquisition unit and industrial computer; Described bushing type heat regenerator comprises hot gas path and cold air path; Described compressor outlet is connected with suction port of compressor after connecting secondary unit, the first bypass hand valve, device for drying and filtering, hot gas path, flowmeter, heat tape, electric expansion valve, the second bypass hand valve, cold air path and evaporimeter successively; Described secondary unit comprises condenser, electrical heating, auxiliary evaporator and heat exchange medium, and described auxiliary evaporator and auxiliary compressor, auxiliary condenser and capillary are connected to form loop by pipeline head and the tail; Described first bypass hand valve two ends are connected with tested condenser by the first control valve; Described second bypass hand valve two ends are connected with tested evaporimeter by the second control valve; Described tested condenser is imported and exported and is respectively equipped with the first temperature sensor and the second temperature sensor, and described tested condenser inlet is provided with the first pressure sensor, and described tested condenser and tested evaporimeter two ends are all connected with differential pressure pickup; Described heat tape outlet is provided with three-temperature sensor and the second pressure sensor; Described tested evaporator outlet is provided with the 4th temperature sensor and the 3rd pressure sensor; Described compressor, secondary unit, flowmeter, heat tape, electric expansion valve, the first temperature sensor, the first pressure sensor, three-temperature sensor, the second pressure sensor and the 3rd pressure sensor be connection control device respectively, described controller connects industrial computer, and described second temperature sensor, differential pressure pickup and the 4th temperature sensor be connection data collector and industrial computer respectively.
2. a kind of refrigerator heat exchanger performance measure and control device according to claim 1, it is characterized in that, described controller is PID controller, comprise the first controller, second controller, 3rd controller and the 4th controller, described compressor, first pressure sensor, 3rd pressure sensor connects the first controller respectively, described secondary unit, first temperature sensor, second pressure sensor connects second controller respectively, described flowmeter and electric expansion valve are connected the 3rd controller respectively, described heat tape and three-temperature sensor are connected the 4th controller respectively, described first controller, second controller, the 3rd controller are connected industrial computer with the 4th controller, and described second temperature sensor, differential pressure pickup and the 4th temperature sensor be connection data collector and industrial computer respectively.
3. a kind of refrigerator heat exchanger performance measure and control device according to claim 1 and 2, is characterized in that, the wind wing passage series connection of described auxiliary condenser and evaporimeter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420545342.7U CN204187901U (en) | 2014-09-22 | 2014-09-22 | Refrigerator heat exchanger performance measure and control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420545342.7U CN204187901U (en) | 2014-09-22 | 2014-09-22 | Refrigerator heat exchanger performance measure and control device |
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| Publication Number | Publication Date |
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| CN204187901U true CN204187901U (en) | 2015-03-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420545342.7U Withdrawn - After Issue CN204187901U (en) | 2014-09-22 | 2014-09-22 | Refrigerator heat exchanger performance measure and control device |
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| Country | Link |
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| CN (1) | CN204187901U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104197597A (en) * | 2014-09-22 | 2014-12-10 | 广州天河兰石技术开发有限公司 | Refrigerator heat exchanger performance measurement and control device |
| CN109668750A (en) * | 2019-01-06 | 2019-04-23 | 东北电力大学 | A kind of passage aisle heat exchange equipment heat transfer deterioration prediction technique in parallel based on pressure drop signal analysis |
-
2014
- 2014-09-22 CN CN201420545342.7U patent/CN204187901U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104197597A (en) * | 2014-09-22 | 2014-12-10 | 广州天河兰石技术开发有限公司 | Refrigerator heat exchanger performance measurement and control device |
| CN109668750A (en) * | 2019-01-06 | 2019-04-23 | 东北电力大学 | A kind of passage aisle heat exchange equipment heat transfer deterioration prediction technique in parallel based on pressure drop signal analysis |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150304 Effective date of abandoning: 20160511 |
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| C25 | Abandonment of patent right or utility model to avoid double patenting |