CN113933084A - Heat exchanger heat exchange experiment test platform and test method - Google Patents
Heat exchanger heat exchange experiment test platform and test method Download PDFInfo
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- CN113933084A CN113933084A CN202111220174.5A CN202111220174A CN113933084A CN 113933084 A CN113933084 A CN 113933084A CN 202111220174 A CN202111220174 A CN 202111220174A CN 113933084 A CN113933084 A CN 113933084A
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- 238000012360 testing method Methods 0.000 title claims abstract description 47
- 238000002474 experimental method Methods 0.000 title claims abstract description 34
- 238000010998 test method Methods 0.000 title claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 153
- 238000009835 boiling Methods 0.000 claims abstract description 75
- 239000000498 cooling water Substances 0.000 claims abstract description 32
- 238000009833 condensation Methods 0.000 claims abstract description 22
- 230000005494 condensation Effects 0.000 claims abstract description 22
- 241000446313 Lamella Species 0.000 claims abstract description 13
- 238000000034 method Methods 0.000 claims abstract description 4
- 230000008569 process Effects 0.000 claims abstract description 4
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 claims description 39
- 229910052731 fluorine Inorganic materials 0.000 claims description 39
- 239000011737 fluorine Substances 0.000 claims description 39
- 239000007788 liquid Substances 0.000 claims description 30
- 239000003507 refrigerant Substances 0.000 claims description 26
- 238000004064 recycling Methods 0.000 claims description 15
- 238000001035 drying Methods 0.000 claims description 12
- 230000008016 vaporization Effects 0.000 claims description 2
- 230000008859 change Effects 0.000 description 4
- 230000001276 controlling effect Effects 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- 238000004134 energy conservation Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000008236 heating water Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M99/00—Subject matter not provided for in other groups of this subclass
- G01M99/008—Subject matter not provided for in other groups of this subclass by doing functionality tests
Abstract
The invention relates to the technical field of heat exchanger testing, in particular to a heat exchanger heat exchange experiment testing platform and a testing method, which comprise a compressed air system, a hot water system, a cooling water system and a testing system, wherein the hot water system and the compressed air system exchange heat through a condensing heat exchanger, the cooling water system and the compressed air system exchange heat through a boiling heat exchanger, the hot water system and the cooling water system exchange heat through a lamella heat exchanger, and the testing system is used for testing the thermal performance and the flow resistance of a lamella heat exchanger, a condensing heat exchanger or a boiling heat exchanger to be detected in the process of heat exchange among the compressed air system, the hot water system and the cooling water system The condensation heat exchanger or the boiling heat exchanger carries out heat exchange experiment test.
Description
Technical Field
The invention relates to the technical field of heat exchanger testing, in particular to a heat exchanger heat exchange experiment testing platform and a heat exchanger heat exchange experiment testing method.
Background
The principle of operation of a heat exchanger is heat exchange, which in turn can be described as transferring heat from a hot fluid to a cold fluid. The heat exchanger has wide range of design, is very important in production and life, and mainly relates to chemical industry, petroleum, steel, automobiles, food and a plurality of industrial departments.
The conventional liquid-gas heat exchanger performance test platform burns gasoline and heats water in a boiler, so that the effects of saving emission and protecting the environment cannot be achieved; the flow and the temperature of a water inlet of the single-side heat exchanger are often only regulated, and the cold side and the hot side cannot be respectively regulated, so that the real working environment is simulated; the market equipment has poor openness, and the plate heat exchanger, the condensing heat exchanger and the boiling heat exchanger can not be tested by the same equipment.
Disclosure of Invention
The invention aims to provide a heat exchanger heat exchange experiment test platform and a test method to solve the problems in the background technology.
In order to achieve the purpose, the technical scheme of the invention is as follows:
the heat exchanger heat exchange experiment test platform comprises a compressed air system, a hot water system, a cooling water system and a test system, wherein the hot water system and the compressed air system exchange heat through a condensation heat exchanger, the cooling water system and the compressed air system exchange heat through a boiling heat exchanger, the hot water system and the cooling water system exchange heat through a lamella heat exchanger, the test system is used for testing the thermal performance and the flow resistance of the lamella heat exchanger, the condensation heat exchanger or the boiling heat exchanger to be detected in the heat exchange process among the compressed air system, the hot water system and the cooling water system, and the test system comprises a hot water flow control assembly arranged in the hot water system, a cooling water flow control assembly arranged in the cooling water system, a temperature measuring port, a pressure measuring port, an electric heater and a heat exchanger for changing the temperature of a cold water inlet of the lamella heat exchanger, The temperature measuring port and the pressure measuring port are provided with a plurality of groups and are respectively arranged on the compressor, the hot water tank and the cold water tank and on inlet and outlet pipelines of the condensing heat exchanger, the boiling heat exchanger and the lamella heat exchanger.
Further, the compressed air system comprises a compressor, an oil separator, an oil storage tank, a condensing heat exchanger, a liquid storage tank, a drying filter, a boiling heat exchanger, a gas-liquid separator, a vacuum pump and a refrigerant recycling machine, wherein the compressor is sequentially connected with the oil separator, the condensing heat exchanger, the liquid storage tank, the drying filter, the boiling heat exchanger and the gas-liquid separator, the gas-liquid separator is connected with the compressor to form a loop, the oil separator, the oil storage tank and the compressor are sequentially connected to form the loop, the vacuum pump is simultaneously connected with the boiling heat exchanger and the condensing heat exchanger, and the refrigerant recycling machine is simultaneously connected with the boiling heat exchanger, the condensing heat exchanger and the liquid storage tank.
Further, the electric control valve assembly comprises a ninth ball valve, an eleventh ball valve, a twelfth ball valve, a thirteenth ball valve, a fifteenth ball valve, a seventeenth ball valve, an eighteenth ball valve, a third electric proportional control valve, a fourth electric proportional control valve and a fifth electric proportional control valve, the ninth ball valve and the eleventh ball valve are respectively arranged at the inlet and outlet ends of the fluorine path of the condensing heat exchanger, the fifteenth ball valve and the thirteenth ball valve are respectively arranged at the inlet and outlet ends of the fluorine path of the boiling heat exchanger, the twelfth ball valve is arranged between the condensing heat exchanger and the refrigerant recovery machine, the seventeenth ball valve and the eighteenth ball valve are arranged in series between the boiling heat exchanger and the vacuum pump, and the third electric proportional control valve, the fourth electric proportional control valve and the fifth electric proportional control valve are arranged in parallel between the boiling heat exchanger and the drying filter.
Furthermore, a one-way valve is arranged between the condensing heat exchanger and the refrigerant recovery machine and between the oil storage tank and the compressor.
Furthermore, three groups of electromagnetic valves and three groups of flow meters are arranged between the boiling heat exchanger and the drying filter in parallel, and the third electric proportional control valve, the fourth electric proportional control valve and the fifth electric proportional control valve are respectively connected with the group of electromagnetic valves and the group of flow meters in series.
Furthermore, the hot water system comprises a hot water tank, a condensation heat exchanger, a dry cooler and a plate-shell type heat exchanger, wherein the hot water tank is sequentially connected with the condensation heat exchanger, the dry cooler and the plate-shell type heat exchanger, and the plate-shell type heat exchanger is further connected with the hot water tank to form a loop.
Furthermore, the hot water flow control assembly comprises a first electric proportional control valve, a second ball valve, a fourth ball valve, a fifth ball valve, a sixth ball valve, a seventh ball valve, an eighth ball valve and a tenth ball valve, wherein the second ball valve and the fourth ball valve are respectively provided with a hot water inlet and outlet end of the plate-shell type heat exchanger, two groups of pipelines connected in parallel are arranged between the condensing heat exchanger and the plate-shell type heat exchanger, the seventh ball valve is arranged on one group of pipelines, a dry cooler, the sixth ball valve and the fifth ball valve are arranged on the inlet and outlet end of the dry cooler, the outlet end of the combined two groups of pipelines is also connected in series with a flowmeter, the tenth ball valve and the eighth ball valve are respectively arranged at the hot water inlet and outlet end of the condensing heat exchanger, the first electric proportional control valve is arranged between the dry cooler and the hot water tank, and two groups of pipelines connected in parallel are arranged between the hot water tank and the condensing heat exchanger, one group is provided with a hot water pump, the other group is provided with a second electric proportional control valve, and the two groups of pipelines are combined and then connected in series with a flowmeter.
Furthermore, the cooling water system comprises a cold water tank, a boiling heat exchanger, a heat exchanger, an electric heater and a plate-shell type heat exchanger, wherein the cold water tank, the boiling heat exchanger, the electric heater and the plate-shell type heat exchanger are sequentially connected, and the plate-shell type heat exchanger is further connected with the cold water tank to form a loop.
Further, the cooling water flow control assembly comprises a sixth electric proportional control valve, a seventh electric proportional control valve, an eighth electric proportional control valve, a first ball valve, a third ball valve, a fourteenth ball valve and a sixteenth ball valve, the third ball valve and the first ball valve are respectively arranged at the cold water inlet and outlet ends of the plate-shell type heat exchanger, the fourteenth ball valve and the sixteenth ball valve are respectively arranged at the cold water inlet and outlet ends of the boiling heat exchanger, a sixth electric proportional control valve is arranged between the plate-shell type heat exchanger and the cold water tank, three groups of pipelines are arranged in parallel between the cold water tank and the boiling heat exchanger, wherein, a seventh electric proportional control valve and an eighth electric proportional control valve are respectively arranged on two groups of pipelines which are connected in parallel, a cold water pump and a flowmeter are arranged on the other group of pipelines, and a flowmeter is arranged between the electric heater and the plate-shell type heat exchanger.
A test method of a heat exchanger heat exchange experiment test platform specifically comprises the following steps:
s1: starting a compressor, compressing low-temperature and low-pressure refrigerant gas into high-temperature and high-pressure gas, exchanging heat with a water path when the high-temperature and low-pressure refrigerant gas passes through a condensing heat exchanger to be liquefied, exchanging heat with the water path when the high-temperature and low-pressure refrigerant gas passes through an expansion valve, and vaporizing to form a loop; starting a hot water pump, enabling hot water to enter a condenser heat exchanger from a hot water tank, pass through a dry cooler and then reach an experimental element to form a loop; starting a cold water pump, wherein cold water enters the boiling heat exchanger from a cold water tank, passes through the heat exchanger and the electric heater, and then enters the plate-shell type heat exchanger to form a loop;
s2: performing a heat exchange experiment of the plate-shell type heat exchanger, closing the first ball valve, the second ball valve, the third ball valve and the fourth ball valve, changing the plate-shell type heat exchanger into the plate-shell type heat exchanger to be detected, and opening the first ball valve, the second ball valve, the third ball valve and the fourth ball valve; adjusting the opening of the first electric proportional control valve, changing the flow of a hot water inlet of the plate-shell heat exchanger, opening a fifth ball valve and a sixth ball valve, changing the fan speed of the dry cooler, and controlling the temperature of the hot water inlet of the plate-shell heat exchanger; adjusting the opening of the seventh electric proportional control valve, changing the flow of the cold water inlet of the plate-shell heat exchanger, opening the sixth electric proportional control valve and the electric heater, and changing the temperature of the cold water inlet of the plate-shell heat exchanger; after the flow, the temperature and the pressure are stable, starting data acquisition;
s3: performing a heat exchange experiment of the condensing heat exchanger, namely opening a twelfth ball valve to enable working media to be recycled to the liquid storage tank through the refrigerant recycling machine, closing an eighth ball valve, a ninth ball valve, a tenth ball valve and an eleventh ball valve, replacing the condensing heat exchanger with the condensing heat exchanger to be detected, and then opening the eighth ball valve, the ninth ball valve, the tenth ball valve and the eleventh ball valve; opening a seventeenth ball valve, enabling the pipeline to be in vacuum through a vacuum pump, and closing the twelfth ball valve and the seventeenth ball valve; the opening degree of the second electric proportional control valve is adjusted, and the flow of hot water of the condensation heat exchanger is changed, so that the heat exchange quantity of the fluorine path is changed, the quantity of liquid generated by the fluorine path is changed, and the pressure and the temperature of the fluorine path at the outlet of the condensation heat exchanger are influenced; adjusting a third electric proportional control valve, a fourth electric proportional control valve and a fifth electric proportional control valve to change the flow of the fluorine path; after the flow, the temperature and the pressure are stable, starting data acquisition;
s4: performing a heat exchange experiment of the boiling heat exchanger, firstly opening an eighteenth ball valve to enable the working medium to be recycled to the liquid storage tank through the refrigerant recycling machine, closing a thirteenth ball valve, a fourteenth ball valve, a fifteenth ball valve and a sixteenth ball valve, replacing the boiling heat exchanger with the boiling heat exchanger to be detected, and then opening the thirteenth ball valve, the fourteenth ball valve, the fifteenth ball valve and the sixteenth ball valve; opening the seventeenth ball valve, enabling the pipeline to be in vacuum through a vacuum pump, and closing the seventeenth ball valve and the eighteenth ball valve; the opening degree of the eighth electric proportional control valve is adjusted, and the flow of cold water of the boiling heat exchanger is changed, so that the heat exchange quantity of the fluorine path is changed, the quantity of gas generated by the fluorine path is changed, and the pressure and the temperature of the fluorine path at the outlet of the boiling heat exchanger are influenced; and adjusting the third electric proportional control valve, the fourth electric proportional control valve and the fifth electric proportional control valve, changing the flow of the fluorine path, and starting data acquisition after the flow, the temperature and the pressure are stable.
Compared with the prior art, the invention has the beneficial effects that:
1. in recent years, with the proposal of carbon neutralization policy, energy conservation and emission reduction are needed in industry, gasoline is mostly used as fuel for heating a boiler in hot water supply of an experimental test platform in the market, so that not only is time required for heating water, but also energy conservation, emission reduction and environmental pollution are not caused. The invention changes the compressor, not only saves time, but also protects the environment.
2. The invention provides a test platform which can respectively adjust the temperature of cold and hot side water inlets and realize accurate and rapid temperature control through a dry cooler, an electric heater and a plate exchanger.
3. The test platform provided by the invention can be used for heat exchange experiments of the plate-shell type heat exchanger, the condensing heat exchanger and the boiling heat exchanger.
Drawings
Fig. 1 is a schematic structural view of the present invention.
The reference numbers in the drawings are: 1-a dry cooler, 2-a condensing heat exchanger, 3-a plate-shell heat exchanger, 4-an electric heater, 5-a heat exchanger, 6-an oil separator, 7-a compressor, 8-a gas-liquid separator, 9-an oil storage tank, 10-a vacuum pump, 11-a boiling heat exchanger, 12-a refrigerant reclaimer, 13-a hot water tank, 14-a liquid storage tank, 15-a dry filter, 16-a cold water tank, 17-a first electric proportional control valve, 18-a first ball valve, 19-a second ball valve, 20-a third ball valve, 21-a fourth ball valve, 22-a fifth ball valve, 23-a sixth ball valve, 24-a seventh ball valve, 25-an eighth ball valve, 26-a ninth ball valve, 27-a tenth ball valve and 28-an eleventh ball valve, 29-twelfth ball valve, 30-, 31-thirteenth ball valve, 32-fourteenth ball valve, 33-fifteenth ball valve, 34-sixteenth ball valve, 35-seventeenth ball valve, 36-eighteenth ball valve, 37-third electric proportional control valve, 38-fourth electric proportional control valve, 39-fifth electric proportional control valve, 40-sixth electric proportional control valve, 41-seventh electric proportional control valve, 42-eighth electric proportional control valve, T-temperature measuring port and P-pressure measuring port.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
Referring to fig. 1, the heat exchanger heat exchange experiment test platform comprises a compressed air system, a hot water system, a cooling water system and a test system, wherein the hot water system and the compressed air system exchange heat through a condensation heat exchanger 2, the cooling water system and the compressed air system exchange heat through a boiling heat exchanger 11, the hot water system and the cooling water system exchange heat through a plate-shell type heat exchanger 3, the test system is used for testing the thermal performance and the flow resistance of the plate-shell type heat exchanger to be detected, the condensation heat exchanger or the boiling heat exchanger to be detected in the process of heat exchange among the compressed air system, the hot water system and the cooling water system, and the test system comprises a hot water flow control assembly arranged in the hot water system, a cooling water flow control assembly arranged in the cooling water system, a temperature measuring port T, a pressure measuring port P, an electric heater 4 and a heat exchanger 5 used for changing the temperature of a cold water inlet of the plate-shell type heat exchanger 3, The dry cooler 1 for changing the temperature of a hot water inlet of the plate-shell heat exchanger 3 and the electric control valve assembly for changing the temperature and the pressure of a fluorine path in a compressed air system are formed, and a plurality of groups of temperature measuring ports T and pressure measuring ports P are arranged on the compressor 7, the hot water tank 13 and the cold water tank 16 and on inlet and outlet pipelines of the condensing heat exchanger 2, the boiling heat exchanger 11 and the plate-shell heat exchanger 3 respectively.
The compressed air system comprises a compressor 7, an oil separator 6, an oil storage tank 9, a condensing heat exchanger 2, a liquid storage tank 14, a drying filter 15, a boiling heat exchanger 11, a gas-liquid separator 8, a vacuum pump 10 and a refrigerant recycling machine 12, wherein the compressor 7 is sequentially connected with the oil separator 6, the condensing heat exchanger 2, the liquid storage tank 14, the drying filter 15, the boiling heat exchanger 11 and the gas-liquid separator 8, the gas-liquid separator 8 is further connected with the compressor 7 to form a loop, the oil separator 6, the oil storage tank 9 and the compressor 7 are sequentially connected to form a loop, the vacuum pump 10 is simultaneously connected with the boiling heat exchanger 11 and the condensing heat exchanger 2, and the refrigerant recycling machine 12 is simultaneously connected with the boiling heat exchanger 11, the condensing heat exchanger 2 and the liquid storage tank 14.
The electric control valve assembly comprises a ninth ball valve 26, an eleventh ball valve 28, a twelfth ball valve 29, a thirteenth ball valve 31, a fifteenth ball valve 33, a seventeenth ball valve 35, an eighteenth ball valve 36, a third electric proportional control valve 37, a fourth electric proportional control valve 38 and a fifth electric proportional control valve 39, the ninth ball valve 26 and the eleventh ball valve 28 are respectively arranged at the inlet and outlet end of the fluorine path of the condensing heat exchanger 2, the fifteenth ball valve 33 and the thirteenth ball valve 31 are respectively arranged at the inlet and outlet end of the fluorine path of the boiling heat exchanger 11, the twelfth ball valve 29 is arranged between the condensing heat exchanger 2 and the refrigerant recovery machine 12, the seventeenth ball valve 35 and the eighteenth ball valve 36 are arranged in series between the boiling heat exchanger 11 and the vacuum pump 10, and the third electric proportional control valve 37, the fourth electric proportional control valve 38 and the fifth electric proportional control valve 39 are arranged in parallel between the boiling heat exchanger 11 and the drying filter 15.
One-way valves are arranged between the condensing heat exchanger 2 and the refrigerant recycling machine 12 and between the oil storage tank 9 and the compressor 7.
Three groups of electromagnetic valves and three groups of flow meters are further arranged between the boiling heat exchanger 11 and the drying filter 15 in parallel, and the third electric proportional control valve 37, the fourth electric proportional control valve 38 and the fifth electric proportional control valve 39 are respectively connected with the group of electromagnetic valves and the group of flow meters in series.
The hot water system comprises a hot water tank 13, a condensation heat exchanger 2, a dry cooler 1 and a plate-shell type heat exchanger 3, wherein the hot water tank 13 is sequentially connected with the condensation heat exchanger 2, the dry cooler 1 and the plate-shell type heat exchanger 3, and the plate-shell type heat exchanger 3 is further connected with the hot water tank 13 to form a loop.
The hot water flow control assembly comprises a first electric proportional control valve 17, a second electric proportional control valve 30, a second ball valve 19, a fourth ball valve 21, a fifth ball valve 22, a sixth ball valve 23, a seventh ball valve 24, an eighth ball valve 25 and a tenth ball valve 27, wherein the second ball valve 19 and the fourth ball valve 21 are respectively provided with a hot water inlet and outlet end of the plate-shell type heat exchanger 3, two groups of pipelines connected in parallel are arranged between the condensing heat exchanger 2 and the plate-shell type heat exchanger 3, the seventh ball valve 24 is arranged on one group of pipelines, the dry cooler 1 and the sixth ball valve 23 and the fifth ball valve 22 which are arranged at the inlet and outlet end of the dry cooler 1 are arranged on the other group of pipelines, the outlet end of the two groups of pipelines is connected in series with a flowmeter, the tenth ball valve 27 and the eighth ball valve 25 are respectively arranged at the hot water inlet and outlet end of the condensing heat exchanger 2, the first electric proportional control valve 17 is arranged between the dry cooler 1 and the hot water tank 13, and two groups of pipelines connected in parallel are arranged between the hot water tank 13 and the condensing heat exchanger 2, one group is provided with a hot water pump, the other group is provided with a second electric proportional control valve 30, and the two groups of pipelines are combined and then connected in series with a flowmeter.
The cooling water system comprises a cold water tank 16, a boiling heat exchanger 11, a heat exchanger 5, an electric heater 4 and a plate-shell type heat exchanger 3, wherein the cold water tank 16, the boiling heat exchanger 11, the heat exchanger 5, the electric heater 4 and the plate-shell type heat exchanger 3 are sequentially connected, and the plate-shell type heat exchanger 3 is connected with the cold water tank 16 to form a loop.
The cooling water flow control assembly comprises a sixth electric proportional control valve 40, a seventh electric proportional control valve 41, an eighth electric proportional control valve 42, a first ball valve 18, a third ball valve 20, a fourteenth ball valve 32 and a sixteenth ball valve 34, wherein the third ball valve 20 and the first ball valve 18 are respectively arranged at the cold water inlet and outlet ends of the plate-shell type heat exchanger 3, the fourteenth ball valve 32 and the sixteenth ball valve 34 are respectively arranged at the cold water inlet and outlet ends of the boiling heat exchanger 11, the sixth electric proportional control valve 40 is arranged between the plate-shell type heat exchanger 3 and the cold water tank 16, three groups of pipelines are arranged between the cold water tank 16 and the boiling heat exchanger 11 in parallel, wherein, a seventh electric proportional control valve 41 and an eighth electric proportional control valve 42 are respectively arranged on two groups of pipelines which are connected in parallel, a cold water pump and a flowmeter are arranged on the other group of pipelines, and a flowmeter is arranged between the electric heater 4 and the plate-shell type heat exchanger 3.
A test method of a heat exchanger heat exchange experiment test platform specifically comprises the following steps:
s1: starting the compressor 7, compressing low-temperature and low-pressure refrigerant gas into high-temperature and high-pressure gas, exchanging heat with the water path when passing through the condensing heat exchanger 2 to be liquefied, exchanging heat with the water path when passing through the expansion valve, and then evaporating to form a loop; starting a hot water pump, enabling hot water to enter a condenser heat exchanger 2 from a hot water tank 13, pass through a dry cooler 1 and then reach an experimental element 3 to form a loop; starting a cold water pump, wherein cold water enters the boiling heat exchanger 11 from a cold water tank 16, passes through the heat exchanger 5 and the electric heater 4, and then enters the plate-shell type heat exchanger 3 to form a loop;
s2: performing a heat exchange experiment of the plate-shell type heat exchanger, firstly closing the first ball valve 18, the second ball valve 19, the third ball valve 20 and the fourth ball valve 21, changing the plate-shell type heat exchanger 3 into the plate-shell type heat exchanger to be detected, and then opening the first ball valve 18, the second ball valve 19, the third ball valve 20 and the fourth ball valve 21; adjusting the opening degree of the first electric proportional control valve 17, changing the flow of a hot water inlet of the plate-shell heat exchanger, opening a fifth ball valve 22 and a sixth ball valve 23, changing the speed of a fan of the dry cooler 1, and controlling the temperature of the hot water inlet of the plate-shell heat exchanger; the opening degree of the seventh electric proportional control valve 41 is adjusted, the flow of the cold water inlet of the plate-shell heat exchanger is changed, the sixth electric proportional control valve 40 and the electric heater 4 are opened, and the temperature of the cold water inlet of the plate-shell heat exchanger is changed; after the flow, the temperature and the pressure are stable, starting data acquisition;
s3: performing a heat exchange experiment of the condensing heat exchanger, firstly opening the twelfth ball valve 29 to enable the working medium to be recycled to the liquid storage tank 14 through the refrigerant recycling machine 12, closing the eighth ball valve 25, the ninth ball valve 26, the tenth ball valve 27 and the eleventh ball valve 28, changing the condensing heat exchanger 2 into the condensing heat exchanger to be detected, and then opening the eighth ball valve 25, the ninth ball valve 26, the tenth ball valve 27 and the eleventh ball valve 28; opening the seventeenth ball valve 35, making the pipeline vacuum by the vacuum pump 10, and closing the twelfth ball valve 29 and the seventeenth ball valve 35; the opening degree of the second electric proportional control valve 30 is adjusted, and the flow of hot water of the condensing heat exchanger is changed, so that the heat exchange quantity of a fluorine path is changed, the quantity of liquid generated by the fluorine path is changed, and the pressure and the temperature of the fluorine path at the outlet of the condensing heat exchanger are influenced; the flow of the fluorine path is changed by adjusting a third electric proportional control valve 37, a fourth electric proportional control valve 38 and a fifth electric proportional control valve 39; after the flow, the temperature and the pressure are stable, starting data acquisition;
s4: performing a heat exchange experiment of the boiling heat exchanger, firstly opening an eighteenth ball valve 36 to enable the working medium to be recycled to the liquid storage tank 14 through the refrigerant recycling machine 12, closing a thirteenth ball valve 31, a fourteenth ball valve 32, a fifteenth ball valve 33 and a sixteenth ball valve 34, changing the boiling heat exchanger 11 into the boiling heat exchanger to be detected, and then opening the thirteenth ball valve 31, the fourteenth ball valve 32, the fifteenth ball valve 33 and the sixteenth ball valve 34; opening the seventeenth ball valve 35, making the pipeline vacuum by the vacuum pump 10, and closing the seventeenth ball valve 35 and the eighteenth ball valve 36; the opening degree of the eighth electric proportional control valve 42 is adjusted, and the flow of cold water of the boiling heat exchanger is changed, so that the heat exchange quantity of a fluorine path is changed, the quantity of gas generated by the fluorine path is changed, and the pressure and the temperature of the fluorine path at the outlet of the boiling heat exchanger are influenced; and adjusting a third electric proportional control valve 37, a fourth electric proportional control valve 38 and a fifth electric proportional control valve 39 to change the flow of the fluorine path, and starting data acquisition after the flow, the temperature and the pressure are stable.
When the whole device is used for carrying out a heat exchange experiment of the plate-shell type heat exchanger, the plate-shell type heat exchanger 3 is changed into the plate-shell type heat exchanger to be detected, the opening degree of the first electric proportional control valve 17 is adjusted, the flow of a hot water inlet of the plate-shell type heat exchanger is changed, and the flow resistance characteristic of the plate-shell type heat exchanger is tested; then keeping the flow unchanged, opening a fifth ball valve 22 and a sixth ball valve 23, changing the speed of a fan of the dry cooler 1, controlling the temperature of a hot water inlet of the plate-shell type heat exchanger, and testing the thermal performance of shell-type heat exchange; adjusting the opening degree of a seventh electric proportional control valve 41, changing the flow of a cold water inlet of the plate-shell heat exchanger, and testing the flow resistance characteristic of the plate-shell heat exchanger; and keeping the flow unchanged, opening a sixth electric proportional control valve 40 and an electric heater 4, changing the temperature of a cold water inlet of the shell-and-plate heat exchanger, and testing the thermal performance of the shell-and-plate heat exchanger.
When the whole device is used for carrying out a condensation heat exchanger heat exchange experiment, the condensation heat exchanger 2 is replaced by a condensation heat exchanger to be detected, the opening degree of the second electric proportional control valve 30 is adjusted, and the flow of hot water of the condensation heat exchanger is changed, so that the heat exchange quantity of a fluorine path is changed, the quantity of liquid generated by the fluorine path is changed, and the pressure and the temperature of the fluorine path at the outlet of the condensation heat exchanger are influenced; and adjusting the third electric proportional control valve 37, the fourth electric proportional control valve 38 and the fifth electric proportional control valve 39 to change the flow of the fluorine path and test the flow resistance characteristic of the condensing heat exchanger.
When the whole device is used for carrying out a boiling heat exchanger heat exchange experiment, the boiling heat exchanger 11 is replaced by a boiling heat exchanger to be detected, the opening degree of the eighth electric proportional control valve 42 is adjusted, and the flow of cold water of the boiling heat exchanger is changed, so that the heat exchange quantity of a fluorine path is changed, the quantity of gas generated by the fluorine path is changed, and the pressure and the temperature of the fluorine path at the outlet of the boiling heat exchanger are influenced; and adjusting the third electric proportional control valve 37, the fourth electric proportional control valve 38 and the fifth electric proportional control valve 39 to change the flow of the fluorine path and test the flow resistance characteristic of the condensing heat exchanger.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention in any way, and any person skilled in the art can make any simple modification, equivalent replacement, and improvement on the above embodiment without departing from the technical spirit of the present invention, and still fall within the protection scope of the technical solution of the present invention.
Claims (10)
1. The heat exchanger heat exchange experiment test platform comprises a compressed air system and is characterized by further comprising a hot water system, a cooling water system and a test system, wherein the hot water system and the compressed air system exchange heat through a condensation heat exchanger (2), the cooling water system and the compressed air system exchange heat through a boiling heat exchanger (11), the hot water system and the cooling water system exchange heat through a lamella heat exchanger (3), the test system is used for testing the thermal performance and the flow resistance of the lamella heat exchanger, the condensation heat exchanger or the boiling heat exchanger to be detected in the heat exchange process among the compressed air system, the hot water system and the cooling water system, and the test system comprises a hot water flow control assembly arranged in the hot water system, a cooling water flow control assembly arranged in the cooling water system, a water inlet pipe, a water outlet pipe and a water outlet pipe, wherein the hot water flow control assembly, the cooling water inlet pipe and the water outlet pipe are arranged in the hot water system, the hot water system and the cooling water outlet pipe are arranged in the cooling water system, and the cooling water outlet pipe are arranged in the hot water outlet pipe, and the hot water outlet pipe, the hot water outlet pipe are connected with the hot water outlet pipe, the hot water outlet pipe is connected with the hot water outlet pipe, the hot water outlet, The temperature measuring port (T) and the pressure measuring port (P) are arranged on a compressor (7), a hot water tank (13) and a cold water tank (16) and on inlet and outlet pipelines of a condensing heat exchanger (2), a boiling heat exchanger (11) and a plate-shell type heat exchanger (3) respectively.
2. The heat exchanger heat exchange experiment test platform of claim 1, characterized in that: the compressed air system comprises a compressor (7), an oil separator (6), an oil storage tank (9), a condensing heat exchanger (2), a liquid storage tank (14), a drying filter (15), a boiling heat exchanger (11), a gas-liquid separator (8), a vacuum pump (10) and a refrigerant recycling machine (12), wherein the compressor (7) is sequentially connected with the oil separator (6), the condensing heat exchanger (2), the liquid storage tank (14), the drying filter (15), the boiling heat exchanger (11) and the gas-liquid separator (8), the gas-liquid separator (8) is connected with the compressor (7) to form a loop, the oil separator (6), the oil storage tank (9) and the compressor (7) are sequentially connected to form a loop, the vacuum pump (10) is simultaneously connected with the boiling heat exchanger (11) and the condensing heat exchanger (2), and the refrigerant recycling machine (12) is simultaneously connected with the boiling heat exchanger (11), A condensing heat exchanger (2) and a liquid storage tank (14).
3. The heat exchanger heat exchange experiment test platform of claim 2, characterized in that: the electric control valve component comprises a ninth ball valve (26), an eleventh ball valve (28), a twelfth ball valve (29), a thirteenth ball valve (31), a fifteenth ball valve (33), a seventeenth ball valve (35), an eighteenth ball valve (36), a third electric proportional control valve (37), a fourth electric proportional control valve (38) and a fifth electric proportional control valve (39), the ninth ball valve (26) and the eleventh ball valve (28) are respectively arranged at the inlet and outlet ends of a fluorine path of the condensing heat exchanger (2), the fifteenth ball valve (33) and the thirteenth ball valve (31) are respectively arranged at the inlet and outlet ends of the fluorine path of the boiling heat exchanger (11), the twelfth ball valve (29) is arranged between the condensing heat exchanger (2) and the refrigerant recoverer (12), the seventeenth ball valve (35) and the eighteenth ball valve (36) are arranged between the boiling heat exchanger (11) and the vacuum pump (10) in series, and the third electric proportional control valve (37), the fourth electric proportional control valve (38) and the fifth electric proportional control valve (39) are arranged between the boiling heat exchanger (11) and the drying filter (15) in parallel.
4. The heat exchanger heat exchange experiment test platform of claim 2, characterized in that: one-way valves are arranged between the condensing heat exchanger (2) and the refrigerant recycling machine (12) and between the oil storage tank (9) and the compressor (7), the corresponding one-way valves allow the refrigerant in the condensing heat exchanger (2) to enter the refrigerant recycling machine (12) and allow the oil in the oil storage tank (9) to return to the compressor (7), and otherwise, the one-way valves do not allow the oil.
5. The heat exchanger heat exchange experiment test platform of claim 3, characterized in that: three groups of electromagnetic valves and three groups of flow meters are further arranged between the boiling heat exchanger (11) and the drying filter (15) in parallel, and the third electric proportional control valve (37), the fourth electric proportional control valve (38) and the fifth electric proportional control valve (39) are respectively connected with the group of electromagnetic valves and the group of flow meters in series.
6. The heat exchanger heat exchange experiment test platform of claim 1, characterized in that: the hot water system comprises a hot water tank (13), a condensation heat exchanger (2), a dry cooler (1) and a lamella heat exchanger (3), wherein the hot water tank (13) is sequentially connected with the condensation heat exchanger (2), the dry cooler (1) and the lamella heat exchanger (3), and the lamella heat exchanger (3) is connected with the hot water tank (13) to form a loop.
7. The heat exchanger heat exchange experiment test platform of claim 6, characterized in that: the hot water flow control assembly comprises a first electric proportional control valve (17), a second electric proportional control valve (30), a second ball valve (19), a fourth ball valve (21), a fifth ball valve (22), a sixth ball valve (23), a seventh ball valve (24), an eighth ball valve (25) and a tenth ball valve (27), wherein the second ball valve (19) and the fourth ball valve (21) are respectively arranged at hot water inlet and outlet ends of the plate-shell type heat exchanger (3), two groups of pipelines connected in parallel are arranged between the condensing heat exchanger (2) and the plate-shell type heat exchanger (3), the seventh ball valve (24) is arranged on one group of pipelines, a dry cooler (1) and the sixth ball valve (23) and the fifth ball valve (22) which are arranged at the inlet and outlet ends of the dry cooler (1) are arranged on the other group of pipelines, a flow meter is connected in series with the outlet ends of the two groups of pipelines, and the tenth ball valve (27) and the eighth ball valve (25) are respectively arranged at the hot water inlet and outlet ends of the condensing heat exchanger (2), a first electric proportional control valve (17) is arranged between the dry cooler (1) and the hot water tank (13), two groups of parallel pipelines are arranged between the hot water tank (13) and the condensing heat exchanger (2), one group is provided with a hot water pump, the other group is provided with a second electric proportional control valve (30), and the two groups of pipelines are combined and then connected in series with a flowmeter.
8. The heat exchanger heat exchange experiment test platform of claim 1, characterized in that: the cooling water system comprises a cold water tank (16), a boiling heat exchanger (11), a heat exchanger (5), an electric heater (4) and a plate-shell type heat exchanger (3), wherein the cold water tank (16), the boiling heat exchanger (11), the heat exchanger (5), the electric heater (4) and the plate-shell type heat exchanger (3) are sequentially connected, and the plate-shell type heat exchanger (3) is connected with the cold water tank (16) to form a loop.
9. The heat exchanger heat exchange experiment test platform of claim 8, characterized in that: the cooling water flow control assembly comprises a sixth electric proportional control valve (40), a seventh electric proportional control valve (41), an eighth electric proportional control valve (42), a first ball valve (18), a third ball valve (20), a fourteenth ball valve (32) and a sixteenth ball valve (34), the third ball valve (20) and the first ball valve (18) are respectively arranged at a cold water inlet and outlet end of the lamella heat exchanger (3), the fourteenth ball valve (32) and the sixteenth ball valve (34) are respectively arranged at a cold water inlet and outlet end of the boiling heat exchanger (11), the sixth electric proportional control valve (40) is arranged between the lamella heat exchanger (3) and the cold water tank (16), three groups of pipelines are arranged between the cold water tank (16) and the boiling heat exchanger (11) in parallel, wherein the seventh electric proportional control valve (41) and the eighth electric proportional control valve (42) are respectively arranged on the two groups of pipelines in parallel connection, a cold water pump and a flowmeter are arranged on the other group of pipelines, and a flowmeter is arranged between the electric heater (4) and the plate-shell type heat exchanger (3).
10. The test method of the heat exchanger heat exchange experiment test platform as claimed in claims 1 to 9, is characterized by comprising the following steps:
s1: starting a compressor (7), compressing low-temperature and low-pressure refrigerant gas into high-temperature and high-pressure gas, exchanging heat with a water path when the high-temperature and high-pressure gas passes through a condensing heat exchanger (2), liquefying, passing through an expansion valve, exchanging heat with the water path when the high-temperature and low-pressure gas passes through a boiling heat exchanger (11), and vaporizing to form a loop; starting a hot water pump, enabling hot water to enter a condenser heat exchanger (2) from a hot water tank (13), pass through a dry cooler (1) and then reach a plate-shell type heat exchanger (3) to form a loop; starting a cold water pump, wherein cold water enters a boiling heat exchanger (11) from a cold water tank (16), passes through a heat exchanger (5) and an electric heater (4), and then reaches a shell-and-plate heat exchanger (3) to form a loop;
s2: performing a heat exchange experiment of the plate-shell type heat exchanger, firstly closing the first ball valve (18), the second ball valve (19), the third ball valve (20) and the fourth ball valve (21), replacing the plate-shell type heat exchanger (3) with the plate-shell type heat exchanger to be detected, and then opening the first ball valve (18), the second ball valve (19), the third ball valve (20) and the fourth ball valve (21); adjusting the opening degree of a first electric proportional control valve (17), changing the flow of a hot water inlet of the plate-shell heat exchanger, opening a fifth ball valve (22) and a sixth ball valve (23), changing the fan speed of the refrigerator (1) and controlling the temperature of the hot water inlet of the plate-shell heat exchanger; the opening degree of a seventh electric proportional control valve (41) is adjusted, the flow of a cold water inlet of the plate-shell type heat exchanger is changed, a sixth electric proportional control valve (40) and the electric heater (4) are opened, and the temperature of the cold water inlet of the plate-shell type heat exchanger is changed; after the flow, the temperature and the pressure are stable, starting data acquisition;
s3: carrying out a heat exchange experiment of the condensing heat exchanger, firstly opening a twelfth ball valve (29) to enable the working medium to be recycled to the liquid storage tank (14) through the refrigerant recycling machine (12), closing an eighth ball valve (25), a ninth ball valve (26), a tenth ball valve (27) and an eleventh ball valve (28), replacing the condensing heat exchanger (2) with the condensing heat exchanger to be detected, and then opening the eighth ball valve (25), the ninth ball valve (26), the tenth ball valve (27) and the eleventh ball valve (28); opening a seventeenth ball valve (35), enabling the pipeline to be in vacuum through a vacuum pump (10), and closing a twelfth ball valve (29) and the seventeenth ball valve (35); the opening degree of a second electric proportional control valve (30) is adjusted, and the flow of hot water of the condensation heat exchanger is changed, so that the heat exchange quantity of a fluorine path is changed, the quantity of liquid generated by the fluorine path is changed, and the pressure and the temperature of the fluorine path at the outlet of the condensation heat exchanger are influenced; the flow of the fluorine path is changed by adjusting a third electric proportional control valve (37), a fourth electric proportional control valve (38) and a fifth electric proportional control valve (39); after the flow, the temperature and the pressure are stable, starting data acquisition;
s4: performing a heat exchange experiment of the boiling heat exchanger, firstly opening an eighteenth ball valve (36), enabling a working medium to be recycled to a liquid storage tank (14) through a refrigerant recycling machine (12), closing a thirteenth ball valve (31), a fourteenth ball valve (32), a fifteenth ball valve (33) and a sixteenth ball valve (34), replacing the boiling heat exchanger (11) with the boiling heat exchanger to be detected, and then opening the thirteenth ball valve (31), the fourteenth ball valve (32), the fifteenth ball valve (33) and the sixteenth ball valve (34); opening a seventeenth ball valve (35), enabling the pipeline to be in vacuum through a vacuum pump (10), and closing the seventeenth ball valve (35) and an eighteenth ball valve (36); the opening degree of an eighth electric proportional control valve (42) is adjusted, and the flow of cold water of the boiling heat exchanger is changed, so that the heat exchange quantity of a fluorine path is changed, the quantity of gas generated by the fluorine path is changed, and the pressure and the temperature of the fluorine path at the outlet of the boiling heat exchanger are influenced; and adjusting a third electric proportional control valve (37), a fourth electric proportional control valve (38) and a fifth electric proportional control valve (39), changing the flow of the fluorine path, and starting data acquisition after the flow, the temperature and the pressure are stable.
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