CN113933084B - Heat exchange experiment test platform and test method for heat exchanger - Google Patents
Heat exchange experiment test platform and test method for heat exchanger Download PDFInfo
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- CN113933084B CN113933084B CN202111220174.5A CN202111220174A CN113933084B CN 113933084 B CN113933084 B CN 113933084B CN 202111220174 A CN202111220174 A CN 202111220174A CN 113933084 B CN113933084 B CN 113933084B
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- 238000012360 testing method Methods 0.000 title claims abstract description 42
- 238000002474 experimental method Methods 0.000 title claims abstract description 30
- 238000010998 test method Methods 0.000 title abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 131
- 238000009835 boiling Methods 0.000 claims abstract description 72
- 239000000498 cooling water Substances 0.000 claims abstract description 33
- 238000009833 condensation Methods 0.000 claims abstract description 27
- 230000005494 condensation Effects 0.000 claims abstract description 27
- 238000000034 method Methods 0.000 claims abstract description 6
- 230000008569 process Effects 0.000 claims abstract description 3
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 claims description 41
- 229910052731 fluorine Inorganic materials 0.000 claims description 41
- 239000011737 fluorine Substances 0.000 claims description 41
- 239000007788 liquid Substances 0.000 claims description 30
- 239000003507 refrigerant Substances 0.000 claims description 25
- 230000001105 regulatory effect Effects 0.000 claims description 25
- 238000001035 drying Methods 0.000 claims description 12
- 238000004064 recycling Methods 0.000 claims description 12
- 241000446313 Lamella Species 0.000 claims description 8
- 238000011084 recovery Methods 0.000 claims description 7
- 238000009834 vaporization Methods 0.000 claims description 3
- 230000008016 vaporization Effects 0.000 claims description 3
- 238000012546 transfer Methods 0.000 claims description 2
- 238000009530 blood pressure measurement Methods 0.000 description 2
- 238000009529 body temperature measurement Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 230000009467 reduction 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
- 230000001276 controlling effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000008676 import Effects 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
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Abstract
The invention relates to the technical field of heat exchanger test, in particular to a heat exchanger heat exchange experiment test platform and a heat exchanger heat exchange experiment test method, wherein 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 shell-and-plate heat exchanger, and the test system is used for testing the thermal performance and the flow resistance characteristics of the shell-and-plate heat exchanger, the condensation heat exchanger or the boiling heat exchanger to be detected in the heat exchange process of the compressed air system, the hot water system and the cooling water system.
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 heat exchanger operates on the principle of heat exchange and may be described as transferring heat from a hot fluid to a cold fluid. The heat exchanger has wide range and important production and activity, and is especially suitable for use in chemical industry, petroleum industry, steel industry, automobile industry, food industry and other industry.
The conventional performance test platform for the liquid-gas heat exchanger burns gasoline and heats water in a boiler, so that the emission reduction can not be realized, and the environment is protected; often, only the flow and the temperature of a water inlet of a single-side heat exchanger are regulated, and the cold side and the hot side cannot be respectively regulated, so that the real working environment is simulated; market equipment has poor openness, and experiments of a plate heat exchanger, a condensation heat exchanger and a boiling heat exchanger cannot be carried out by the same equipment.
Disclosure of Invention
The invention aims to provide a heat exchange experiment test platform and a test method for a heat exchanger, which are used for solving the problems in the background technology.
In order to achieve the above purpose, the technical scheme of the invention is as follows:
The utility model provides a heat exchanger heat transfer experiment test platform, includes compressed air system, still includes hot water system, cooling water system and test system, hot water system carries out the heat exchange through condensation heat exchanger with compressed air system, cooling water system carries out the heat exchange through boiling heat exchanger with compressed air system, hot water system carries out the heat exchange through shell type heat exchanger with cooling water system, test system is used for testing hot air system, hot water system and cooling water system each other carries out the heat exchange in-process to wait to detect shell type heat exchanger, condensation heat exchanger or boiling heat exchanger's thermal performance and flow resistance characteristic, test system is by setting up hot water flow control assembly in hot water system, cooling water flow control assembly, temperature measurement mouth, pressure measurement mouth in cooling water system, be used for changing shell type heat exchanger hot water inlet temperature's dry cooler and be used for changing shell type heat exchanger hot water inlet temperature and be used for changing in the compressed air system fluorine way temperature and pressure's automatically controlled valve assembly constitution, temperature measurement mouth and pressure measurement mouth are provided with a plurality of groups, and set up respectively on compressor, case and water tank and condensation heat exchanger, shell type heat exchanger import and export/export heat exchanger pipeline.
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 again to form a loop, the oil separator, the oil storage tank and the compressor are sequentially connected and form a 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, wherein the ninth ball valve and the eleventh ball valve are respectively arranged at the inlet and outlet ends of a fluorine path of the condensation heat exchanger, the fifteenth ball valve and the thirteenth ball valve are respectively arranged at the inlet and outlet ends of a fluorine path of the boiling heat exchanger, the twelfth ball valve is arranged between the condensation heat exchanger and the refrigerant recycling machine, the seventeenth ball valve and the eighteenth ball valve are arranged between the boiling heat exchanger and the vacuum pump in series, and the third electric proportional control valve, the fourth electric proportional control valve and the fifth electric proportional control valve are arranged between the boiling heat exchanger and the drying filter in parallel.
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.
Further, three groups of electromagnetic valves and three groups of flow meters are further arranged in parallel between the boiling heat exchanger and the drying filter, and the third electric proportional control valve, the fourth electric proportional control valve and the fifth electric proportional control valve are respectively connected with one group of electromagnetic valves and one group of flow meters in series.
Further, 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 connected with the hot water tank again to form a loop.
Further, 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, the second ball valve and the fourth ball valve are respectively arranged at hot water inlet and outlet ends of the plate shell type heat exchanger, two groups of pipelines connected in parallel are arranged between the condensation heat exchanger and the plate shell type heat exchanger, one group of pipelines is provided with the seventh ball valve, the other group of pipelines is provided with a dry cooler, the sixth ball valve and the fifth ball valve which are arranged at the inlet and outlet ends of the dry cooler, the outlet ends of the two groups of pipelines are 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 ends of the condensation heat exchanger, two groups of pipelines connected in parallel are arranged between the dry cooler and the hot water tank, one group of pipelines is provided with a hot water pump, the other group of pipelines are provided with the second electric proportional control valve, and the two groups of pipelines are connected in series with another flowmeter after being combined.
Further, 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 connected with the cold water tank again 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, wherein the third ball valve and the first ball valve are respectively arranged at the cold water inlet and outlet ends of the shell-and-plate 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, the sixth electric proportional control valve is arranged between the shell-and-plate heat exchanger and a cold water tank, three groups of pipelines are connected in parallel between the cold water tank and the boiling heat exchanger, the seventh electric proportional control valve and the 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 respectively arranged on the other group of pipelines, and a flowmeter is arranged between the electric heater and the shell-and-plate heat exchanger.
A test method of a heat exchange experiment test platform of a heat exchanger specifically comprises the following steps:
S1: starting a compressor, compressing low-temperature low-pressure refrigerant gas into high-temperature high-pressure gas, performing heat exchange with a waterway when passing through a condensing heat exchanger to generate liquefaction, performing heat exchange with the waterway when passing through an expansion valve, and performing vaporization to form a loop; starting a hot water pump, enabling hot water to enter a condensing heat exchanger from a hot water tank, passing through a dry cooler and then to an experimental element to form a loop; starting a cold water pump, enabling cold water to enter a boiling heat exchanger from a cold water tank, passing through the heat exchanger and an electric heater, and then entering a plate shell type heat exchanger to form a loop;
S2: performing heat exchange experiments of the plate-shell type heat exchanger, firstly closing the first ball valve, the second ball valve, the third ball valve and the fourth ball valve, exchanging the plate-shell type heat exchanger into the plate-shell type heat exchanger to be detected, and then opening the first ball valve, the second ball valve, the third ball valve and the fourth ball valve; the opening degree of the first electric proportional control valve is adjusted, the flow of the hot water inlet of the shell-and-plate heat exchanger is changed, the fifth ball valve and the sixth ball valve are opened, the fan speed of the dry cooler is changed, and the temperature of the hot water inlet of the shell-and-plate heat exchanger is controlled; the opening degree of the seventh electric proportional control valve is regulated, the flow of the cold water inlet of the plate shell type heat exchanger is changed, the sixth electric proportional control valve and the electric heater are started, 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: the method comprises the steps of performing a heat exchange experiment of a condensing heat exchanger, firstly opening a twelfth ball valve, enabling a working medium to be recycled to a liquid storage tank through a refrigerant recycling machine, closing an eighth ball valve, a ninth ball valve, a tenth ball valve and an eleventh ball valve, exchanging the condensing heat exchanger into 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, putting the pipeline under vacuum through a vacuum pump, and closing the twelfth ball valve and the seventeenth ball valve; the opening degree of the second electric proportional regulating valve is regulated, and the flow rate of hot water of the condensing heat exchanger is changed, so that the heat exchange amount of the fluorine path is changed, the amount 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 third electric proportional control valve, the fourth electric proportional control valve and the fifth electric proportional control valve are regulated, and the flow of the fluorine path is changed; after the flow, the temperature and the pressure are stable, starting data acquisition;
S4: the heat exchange experiment of the boiling heat exchanger is carried out, firstly, an eighteenth ball valve is opened, a working medium is recycled to a liquid storage tank through a refrigerant recycling machine, the thirteenth ball valve, the fourteenth ball valve, the fifteenth ball valve and the sixteenth ball valve are closed, the boiling heat exchanger is replaced by the boiling heat exchanger to be detected, and then the thirteenth ball valve, the fourteenth ball valve, the fifteenth ball valve and the sixteenth ball valve are opened; opening a seventeenth ball valve, enabling the pipeline to be in vacuum through a vacuum pump, and closing the seventeenth ball valve and an eighteenth ball valve; the opening degree of the eighth electric proportional control valve is regulated, and the flow rate of cold water of the boiling heat exchanger is changed, so that the heat exchange amount of a fluorine path is changed, the amount 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 to change 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, along with the proposal of a carbon neutralization policy, energy conservation and emission reduction are required in industry, and the hot water supply of an experimental test platform in the market mostly takes gasoline as fuel to heat a boiler, so that the boiler not only needs time to heat the water, but also can not save energy and reduce emission, and pollute the environment. The invention changes the compressor, which not only saves time, but also protects environment.
2. The invention provides a test platform which can respectively adjust the temperature of a cold and hot side inlet and realize accurate and rapid temperature control through a dry cooler, an electric heater and plate exchange.
3. The test platform provided by the invention realizes heat exchange experiments of the plate shell type heat exchanger, the condensation heat exchanger and the boiling heat exchanger.
Drawings
Fig. 1 is a schematic structural view of the present invention.
The reference numerals in the drawings are: 1-a dry cooler, 2-a condensation heat exchanger, 3-a lamella 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 recoverer, 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, 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, sixth electric proportional control valve, 40-seventh electric proportional control valve, and temperature measuring valve, P-measuring port.
Detailed Description
The invention will now be described in further detail with reference to the drawings and examples.
Referring to fig. 1, a heat exchanger heat exchange experiment test platform comprises a compressed air system, and further comprises 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 heat exchanger 3, the test system is used for testing the thermal performance and flow resistance characteristics of the plate shell heat exchanger, the condensation heat exchanger or the boiling heat exchanger to be detected in the heat exchange process of the compressed air system, the hot water system and the cooling water system, the test system is composed of a hot water flow control component arranged in the hot water system, a cooling water flow control component 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 for changing the temperature of a cold water inlet of the plate shell heat exchanger 3, a dry cooler 1 for changing the temperature of the hot water inlet of the plate shell heat exchanger 3 and an electric control valve component for changing the temperature and the fluorine path and pressure in the compressed air system, and the temperature measuring port T and the pressure measuring ports P are respectively arranged on the hot water tank 7, the cooling water tank 13, the cooling water tank 16 and the cooling water tank 11.
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 and 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, wherein the ninth ball valve 26 and the eleventh ball valve 28 are respectively arranged at the inlet and outlet ends 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 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 recovery machine 12, the seventeenth ball valve 35 and the eighteenth ball valve 36 are serially arranged 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.
A check valve is arranged between the condensing heat exchanger 2 and the refrigerant recovery 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 also arranged in parallel between the boiling heat exchanger 11 and the drying filter 15, and a third electric proportional control valve 37, a fourth electric proportional control valve 38 and a fifth electric proportional control valve 39 are respectively connected in series with one group of electromagnetic valves and one group of flow meters.
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 connected with the hot water tank 13 again 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 arranged at a hot water inlet and outlet end of the plate shell type heat exchanger 3, two groups of parallel pipelines are arranged between the condensation heat exchanger 2 and the plate shell type heat exchanger 3, one group of pipelines is provided with the seventh ball valve 24, the other group of pipelines is provided with a dry cooler 1 and a sixth ball valve 23 and a fifth ball valve 22 which are arranged at an inlet and outlet end of the dry cooler 1, the outlet ends of the two groups of pipelines are connected in series with a flowmeter, the tenth ball valve 27 and the eighth ball valve 25 are respectively arranged at a hot water inlet and outlet end of the condensation heat exchanger 2, the 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 condensation heat exchanger 2, the other group of pipelines is provided with a second electric proportional control valve 30, and the two groups of pipelines are connected in series.
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 again 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 shell-and-plate 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 shell-and-plate heat exchanger 3 and the cold water tank 16, three groups of pipelines are connected in parallel between the cold water tank 16 and the boiling heat exchanger 11, the seventh electric proportional control valve 41 and the 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 respectively arranged on the other groups of pipelines, and a flowmeter is arranged between the electric heater 4 and the shell-plate heat exchanger 3.
A test method of a heat exchange experiment test platform of a heat exchanger specifically comprises the following steps:
S1: starting a compressor 7, compressing low-temperature low-pressure refrigerant gas into high-temperature high-pressure gas, performing heat exchange with a waterway when passing through a condensing heat exchanger 2 to generate liquefaction, performing heat exchange with the waterway when passing through an expansion valve, and performing vaporization when passing through a boiling heat exchanger 11 to form a loop; starting a hot water pump, enabling hot water to enter the condensing heat exchanger 2 from the hot water tank 13, pass through the dry cooler 1 and then enter the experimental element to form a loop; starting a cold water pump, enabling cold water to enter the boiling heat exchanger 11 from the cold water tank 16, pass through the heat exchanger 5 and the electric heater 4, and then enter the lamella 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, exchanging 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; the opening degree of the first electric proportional control valve 17 is adjusted, the flow of the hot water inlet of the shell-and-plate heat exchanger is changed, the fifth ball valve 22 and the sixth ball valve 23 are opened, the fan speed of the drier-cooler 1 is changed, and the temperature of the hot water inlet of the shell-and-plate heat exchanger is controlled; the opening degree of the seventh electric proportional control valve 41 is regulated, the flow rate of the cold water inlet of the plate shell type 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 type heat exchanger is changed; after the flow, the temperature and the pressure are stable, starting data acquisition;
S3: the heat exchange experiment of the condensing heat exchanger is carried out, firstly, a twelfth ball valve 29 is opened, a working medium is recycled to the liquid storage tank 14 through the refrigerant recycling machine 12, an eighth ball valve 25, a ninth ball valve 26, a tenth ball valve 27 and an eleventh ball valve 28 are closed, the condensing heat exchanger 2 is replaced by the condensing heat exchanger to be detected, and then the eighth ball valve 25, the ninth ball valve 26, the tenth ball valve 27 and the eleventh ball valve 28 are opened; opening the seventeenth ball valve 35, putting the pipeline under vacuum by the vacuum pump 10, closing the twelfth ball valve 29 and the seventeenth ball valve 35; the opening degree of the second electric proportional control valve 30 is regulated, and the flow rate of hot water of the condensing heat exchanger is changed, so that the heat exchange amount of the fluorine path is changed, the amount 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 third electric proportional control valve 37, the fourth electric proportional control valve 38 and the fifth electric proportional control valve 39 are regulated to change the flow rate of the fluorine path; after the flow, the temperature and the pressure are stable, starting data acquisition;
S4: the heat exchange experiment of the boiling heat exchanger is carried out, firstly, an eighteenth ball valve 36 is opened, a working medium is recycled to the liquid storage tank 14 through the refrigerant recycling machine 12, a thirteenth ball valve 31, a fourteenth ball valve 32, a fifteenth ball valve 33 and a sixteenth ball valve 34 are closed, the boiling heat exchanger 11 is replaced by the boiling heat exchanger to be detected, and then the thirteenth ball valve 31, the fourteenth ball valve 32, the fifteenth ball valve 33 and the sixteenth ball valve 34 are opened; opening a seventeenth ball valve 35, putting the pipeline under vacuum through the vacuum pump 10, and closing the seventeenth ball valve 35 and an eighteenth ball valve 36; the opening degree of the eighth electric proportional control valve 42 is regulated, and the flow rate of cold water of the boiling heat exchanger is changed, so that the heat exchange amount of a fluorine path is changed, the amount 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 the third electric proportional control valve 37, the fourth electric proportional control valve 38 and the fifth electric proportional control valve 39 are regulated, the flow of the fluorine path is changed, and after the flow, the temperature and the pressure are stable, data acquisition is started.
When the whole device performs a heat exchange experiment of the plate-shell type heat exchanger, the plate-shell type heat exchanger 3 is replaced by the plate-shell type heat exchanger to be detected, the opening degree of the first electric proportional regulating valve 17 is regulated, the flow rate 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, starting 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 shell-type heat exchanger, and testing the thermal performance of shell-type heat exchange; the opening degree of the seventh electric proportional control valve 41 is adjusted, the flow rate of the cold 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; and (3) keeping the flow unchanged, starting the sixth electric proportional control valve 40 and the electric heater 4, changing the temperature of a cold water inlet of the plate shell type heat exchanger, and testing the thermal performance of the plate shell type heat exchanger.
When the whole device performs a heat exchange experiment of the condensing heat exchanger, the condensing heat exchanger 2 is changed into the condensing heat exchanger to be detected, the opening degree of the second electric proportional regulating valve 30 is regulated, and the flow rate of hot water of the condensing heat exchanger is changed, so that the heat exchange amount of a fluorine path is changed, the amount of liquid generated by the fluorine path is changed, and the pressure and the temperature of the fluorine path at an outlet of the condensing heat exchanger are influenced; the third electric proportional control valve 37, the fourth electric proportional control valve 38 and the fifth electric proportional control valve 39 are adjusted, the flow rate of the fluorine path is changed, and the flow resistance characteristic of the condensing heat exchanger is tested.
When the whole device carries out a boiling heat exchanger heat exchange experiment, the boiling heat exchanger 11 is changed into a boiling heat exchanger to be detected, the opening of the eighth electric proportional control valve 42 is regulated, and the flow of cold water of the boiling heat exchanger is changed, so that the heat exchange amount of a fluorine path is changed, the amount 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; the third electric proportional control valve 37, the fourth electric proportional control valve 38 and the fifth electric proportional control valve 39 are adjusted, the flow rate of the fluorine path is changed, and the flow resistance characteristic of the condensing heat exchanger is tested.
The present invention is not limited to the preferred embodiments, and any simple modification, equivalent replacement, and improvement made to the above embodiments by those skilled in the art without departing from the technical scope of the present invention, will fall within the scope of the present invention.
Claims (8)
1. The utility model provides a heat exchanger heat transfer experiment test platform, includes compressed air system, its characterized in that still includes hot water system, cooling water system and test system, hot water system and compressed air system carry out the heat exchange through condensation heat exchanger (2), cooling water system and compressed air system carry out the heat exchange through boiling heat exchanger (11), hot water system and cooling water system carry out the heat exchange through lamella heat exchanger (3), test system is arranged in testing compressed air system, hot water system and cooling water system carry out the heat engineering ability and the flow resistance characteristic of the lamella heat exchanger, condensation heat exchanger or boiling heat exchanger that wait to detect each other in the heat exchange process, test system is by hot water flow control subassembly that sets up in the hot water system, cooling water flow control subassembly, temperature measuring port (T), pressure measuring port (P) that set up in the cooling water system, electric heater (4) and heat exchanger (5) that are used for changing lamella heat exchanger (3) water inlet temperature, dry cooler (1) that are used for changing lamella heat exchanger (3) hot water inlet temperature and be used for changing fluorine circuit temperature and pressure in the compressed air system, electric control port (T) and pressure measuring valve (P) are set up in cold water tank (16) and water pressure measuring port (P) and water tank (13) and are set up in cooling water pressure measuring port (P), respectively at cooling water tank (13) and heat exchanger set up respectively The boiling heat exchanger (11) and the plate shell type heat exchanger (3) are arranged on inlet and outlet pipelines;
the compressed air system comprises a compressor (7), an oil separator (6), a condensing heat exchanger (2), a liquid storage tank (14), a drying filter (15), a boiling heat exchanger (11) and a gas-liquid separator (8), 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), and the gas-liquid separator (8) is connected with the compressor (7) again to form a loop;
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 connected with the hot water tank (13) again to form a loop;
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) again to form a loop.
2. The heat exchanger heat exchange experiment test platform according to claim 1, wherein: the compressed air system further comprises an oil storage tank (9), a vacuum pump (10) and a refrigerant recovery machine (12), wherein the oil separator (6), the oil storage tank (9) and the compressor (7) are sequentially connected and 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 recovery machine (12) is simultaneously connected with the boiling heat exchanger (11), the condensing heat exchanger (2) and the liquid storage tank (14).
3. The heat exchanger heat exchange experiment test platform according to claim 2, wherein: 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 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 a fluorine path of the boiling heat exchanger (11), the twelfth ball valve (29) is arranged between the condensing heat exchanger (2) and the refrigerant recycling machine (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 according to claim 2, wherein: and one check valve is arranged between the condensing heat exchanger (2) and the refrigerant recovery machine (12) and between the oil storage tank (9) and the compressor (7), the corresponding check valve allows the refrigerant in the condensing heat exchanger (2) to enter the refrigerant recovery machine (12) and oil in the oil storage tank (9) to return to the compressor (7), and otherwise, the refrigerant is not allowed to enter the compressor.
5. A heat exchanger heat exchange experimental test platform according to claim 3, wherein: three groups of electromagnetic valves and three groups of flow meters are further arranged in parallel between the boiling heat exchanger (11) and the drying filter (15), 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 one group of electromagnetic valves and one group of flow meters in series.
6. The heat exchanger heat exchange experiment test platform according to claim 1, wherein: 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), 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 condensation heat exchanger (2) and the plate shell type heat exchanger (3), one group of pipelines is provided with the seventh ball valve (24), the other group of pipelines is provided with a dry cooler (1) and a sixth ball valve (23) and a fifth ball valve (22) arranged at the inlet and outlet ends of the dry cooler (1), the outlet ends of the two groups of pipelines are 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 ends of the condensation heat exchanger (2), the first electric proportional control valve (17) is arranged between the dry cooler (1) and the hot water tank (13), the two groups of pipelines are connected in series, and the two groups of electric proportional control valves (30) are arranged between the two groups of pipelines.
7. The heat exchanger heat exchange experiment test platform according to claim 1, wherein: 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 end of the shell-and-plate heat exchanger (3), the fourteenth ball valve (32) and the sixteenth ball valve (34) are respectively arranged at the cold water inlet and outlet end of the boiling heat exchanger (11), a sixth electric proportional control valve (40) is arranged between the shell-and-plate heat exchanger (3) and the cold water tank (16), three groups of pipelines are connected in parallel between the cold water tank (16) and the boiling heat exchanger (11), the seventh electric proportional control valve (41) and the eighth electric proportional control valve (42) are respectively arranged on two groups of pipelines, a cold water pump and a flowmeter are respectively arranged on the other group of pipelines, and a flowmeter is arranged between the electric heater (4) and the shell-type heat exchanger (3).
8. A method for testing a heat exchange experimental test platform of a heat exchanger according to any one of claims 1 to 7, which is characterized by comprising the following steps:
S1: starting a compressor (7), compressing low-temperature low-pressure refrigerant gas into high-temperature high-pressure gas, performing heat exchange with a waterway when passing through a condensing heat exchanger (2), liquefying, performing heat exchange with the waterway when passing through an expansion valve, and performing vaporization when passing through a boiling heat exchanger (11), so as to form a loop; starting a hot water pump, enabling hot water to enter a condensing heat exchanger (2) from a hot water tank (13), pass through a dry cooler (1) and then enter a lamella heat exchanger (3) to form a loop; starting a cold water pump, enabling cold water to enter a boiling heat exchanger (11) from a cold water tank (16), pass through a heat exchanger (5) and an electric heater (4), and then enter a lamella heat exchanger (3) to form a loop;
S2: performing a heat exchange experiment of a plate-shell type heat exchanger, firstly closing a first ball valve (18), a second ball valve (19), a third ball valve (20) and a fourth ball valve (21), exchanging 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); the opening degree of the first electric proportional control valve (17) is adjusted, the flow of the hot water inlet of the shell-and-plate heat exchanger is changed, a fifth ball valve (22) and a sixth ball valve (23) are opened, the fan speed of the dry cooler (1) is changed, and the temperature of the hot water inlet of the shell-and-plate heat exchanger is controlled; the opening degree of a seventh electric proportional control valve (41) is adjusted, the flow of the cold water inlet of the plate shell type heat exchanger is changed, a sixth electric proportional control valve (40) and an 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: firstly, opening a twelfth ball valve (29) to enable a working medium to be recycled to a liquid storage tank (14) through a 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), changing the condensing heat exchanger (2) into a 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), putting the pipeline under vacuum through a vacuum pump (10), and closing a twelfth ball valve (29) and the seventeenth ball valve (35); the opening degree of the second electric proportional control valve (30) is regulated, and the flow of hot water of the condensing heat exchanger is changed, so that the heat exchange amount of the fluorine path is changed, the amount 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 third electric proportional control valve (37), the fourth electric proportional control valve (38) and the fifth electric proportional control valve (39) are regulated, and the flow of the fluorine path is changed; after the flow, the temperature and the pressure are stable, starting data acquisition;
S4: firstly, opening an eighteenth ball valve (36) to enable 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), changing the boiling heat exchanger (11) into a 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), putting the pipeline under 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 regulated, and the flow rate of cold water of the boiling heat exchanger is changed, so that the heat exchange amount of a fluorine path is changed, the amount of gas generated by the fluorine path is changed, and the pressure and the temperature of the fluorine path at an outlet of the boiling heat exchanger are influenced; and (3) regulating the flow of the fluorine path by regulating a third electric proportional regulating valve (37), a fourth electric proportional regulating valve (38) and a fifth electric proportional regulating valve (39), and starting data acquisition after the flow, the temperature and the pressure are stable.
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