CN201945567U - Multi-functional wide-flowing path one-phase heat convection testing apparatus - Google Patents
Multi-functional wide-flowing path one-phase heat convection testing apparatus Download PDFInfo
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- CN201945567U CN201945567U CN2010206590264U CN201020659026U CN201945567U CN 201945567 U CN201945567 U CN 201945567U CN 2010206590264 U CN2010206590264 U CN 2010206590264U CN 201020659026 U CN201020659026 U CN 201020659026U CN 201945567 U CN201945567 U CN 201945567U
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Abstract
The utility model discloses a multi-functional wide-flowing path one-phase heat convection testing apparatus, which comprises a water circulating system, an electrical heating system, a measuring system and an experimental section. The water circulating system is composed of a hot water circulation system and a cold water circulation system. The electrical heating system is composed of an electrical heater and a corresponding control system substantially. The measuring system comprises a temperature measurement, a flow measurement, a differential pressure measurement and a corresponding data acquisition system. The experimental section is formed by connecting a double-pipe heat interchanger and a tube bundle heat exchanger in a parallel mode. The testing apparatus is simple in structure, flexible and convenient in operation, small in size, few in parts, and high in measurement accuracy. A one-phase heat convection and a flow resistance of a heat-transfer tube and the tube bundle heat exchanger are integral, so that an experimental study on a heat-transfer character and a flow resistance character of the heat-transfer tube with different shapes and different physical dimensions and the heat exchanger with different pipe laying modes in a wide Renault number range of a laminar area, a transition area and a turbulence area.
Description
Technical field
The utility model relates to a kind of single-phase convection heat exchange test unit, and particularly a kind of multifunctional wide flow process single-phase convection heat exchange test unit belongs to thermal conduction study and enhanced heat exchange technical field.
Background technology
Along with the continuous intensification of world energy sources crisis, the efficient utilization of the energy and transform the important topic become social sustainable development and faced.Along with the proposition of " energy-conservation " notion, the requirement of people's heat exchanging equipment densification, high efficiency and cost degradation is more and more higher.People research and develop out many thermoexcells in recent years, as thread groove tube, wave pipe, flat tube, micro-rib pipe etc.How are these thermoexcell performances? does the heat interchanger that uses these enhanced tubes to make have higher exchange capability of heat than existing light pipe shell-and-tube heat exchanger? be fit to which actuating medium? these all are the problems that is worth us conscientiously to study.
Heat transfer and flow resistance characteristics are not only the important indicator of examination heat exchange element and heat interchanger complex heat transfer ability, and are the fundamental basis that carries out heat-transfer pipe optimal design and heat exchanger structure design.
Test is the fundamental means that obtains heat exchange element and heat exchanger heat transfer and resistance performance, and test unit then is the guarantee test condition, obtains the hardware facility that authentic data must lean on.The correlation test system of Xiao Shouing only can can't reach the requirement of scientific research and testing as teaching and demonstration in the market.And design from disclosed patent, with water be medium carry out the research of heat exchanger heat transfer and resistance performance test unit seldom, and research object have unicity (only at " plate type finned heat exchanger ", number of patent application: 200810093929.8).
Summary of the invention
The purpose of this utility model is to provide a kind of multifunctional wide flow process single-phase convection heat exchange test unit of studying single tube and pipe bundle heat exchanger heat transfer and flow resistance characteristics in the very wide reynolds number range of laminar region, zone of transition and turbulent region.
In order to address the above problem, the utility model is taked following technical scheme:
Mainly by the pond, the self sucking high-pressure pump, first filtrator, second filtrator, elevated tank, first voltage stabilizer, second voltage stabilizer, first turbo flow meter, second turbo flow meter, test section, electric heating water tank, high pressure pipe pump, temperature measurement system, differential pressure measurement system and data acquisition system (DAS) are formed, described test section is divided into single pipe heat exchanger and pipe bundle heat exchanger, single pipe heat exchanger and pipe bundle heat exchanger all adopt countercurrent heat exchange method, single pipe heat exchanger and pipe bundle heat exchanger are cold, advancing of hot water, outlet all connects identical pipeline, separate with valve each other, the cold water inlet of described single pipe heat exchanger and pipe bundle heat exchanger is divided into two branch roads, wherein a branch road connects first turbo flow meter successively by pipeline, first voltage stabilizer, first filtrator, self sucking high-pressure pump and pond, another branch road connects elevated tank by pipeline, the water inlet pipe of elevated tank connects first filtrator successively, self sucking high-pressure pump and pond, run-down pipe directly connects the pond, described single pipe heat exchanger and pipe bundle heat exchanger cooling water outlet are divided into two branch roads, wherein a branch road connects the pond by pipeline, another branch road is directly to environmental emission, the hot water inlet of described single pipe heat exchanger and pipe bundle heat exchanger is connected second turbo flow meter successively by pipeline, second voltage stabilizer, second filtrator, high pressure pipe pump and electric heating water tank, the hot water outlet of described heat interchanger connects electric heating water tank by pipeline.
The utility model can also comprise:
1. self sucking high-pressure pump and high pressure pipe pump are equipped with bypass circulation, and wherein the bypass circulation of self sucking high-pressure pump is connected with the pond, and the bypass circulation of high pressure pipe pump is connected with electric heating water tank, and bypass circulation is regulated pressure head and flow by controlling opening of valve.
2. first turbo flow meter and second turbo flow meter all adopt the flowmeter group, and wherein, the first turbo flow meter group is made up of three turbo flow meters, and measurement range can reach 0.4m
3/ h～40m
3/ h, the flow size is controlled by variable valve, and the second turbo flow meter group is made up of two turbo flow meters, and measurement range can reach 0.4m
3/ h～20m
3/ h, the flow size is controlled by variable valve.
3. when the cold water flow of testing requirements is lower than the minimum measured value of flowmeter, adopt elevated tank that stable pressure head is provided, and by the size of variable valve adjustable pipe bundle heat exchanger inner cold water flow, weight method is adopted in flow measurement.
4. be provided with heating rod in the electric heating water tank, the rated voltage of single heating rod is 380V, power is 4kW, general power is 200kW, it is 17 groups that all heating rods are divided into, and wherein 16 groups is 12kW, and 1 group is 8kW, by control system control, regulate the programming rate of hot water in the electric heating water tank by the unlatching number of control electric heater.
5. test section hot water or cold water's out temperature is measured by the copper constantan armoured thermocouple.
6. single pipe heat exchanger is when carrying out Calculation of Heat Transfer, the developmental tube outside wall temperature is measured by NI-G-Nickel-Silicom thermocouple that point is welded on the tube wall, measuring the cross section is 3～5, cross sectional shape difference according to developmental tube, use the thermopair and different distribution modes of varying number, adopt all thermocouple measurement results' mean value during calculation of Wall Temperature, and calculate the inner wall temperature of developmental tube, calculate convection transfer rate in the pipe that finally obtains developmental tube by convection heat transfer again by heat conduction.
7. the pipe side pressure of pipe bundle heat exchanger is fallen by first pressure difference transmitter and is measured, and the shell-side pressure drop is measured by pressure difference transmitter; The tube drop of single pipe heat exchanger is measured by second pressure difference transmitter.
Described single-phase convection heat exchange test unit, described test unit can carry out the experimental study of the flow resistance characteristics of pipe bundle heat exchanger and single pipe heat exchanger.Wherein, the pipe side pressure of pipe bundle heat exchanger is fallen by pressure difference transmitter and is measured, and the shell-side pressure drop is measured by pressure difference transmitter; The tube drop of single pipe heat exchanger is measured by pressure difference transmitter.
Described single-phase convection heat exchange test unit, when the cold water flow of testing requirements is lower than the effective range of flowmeter, the drive ram that flows is provided by elevated tank, flow uses weight method to measure, tube drop is used inclination minute-pressure water column differential manometer instead and is measured, for warranty test carries out under stable pressure head, elevated tank is provided with run-down pipe, makes high water tank keep a fixing height.
Described single-phase convection heat exchange test unit, when heat transfer and resistance experiment are carried out, except that water column differential manometer and weight method flow measurements, all the other temperature, flow and pressure drop data are by IMP discrete data acquisition system input PC, the operation of adopting the special software of working out that experimental data is gathered, calculates, shown, realization can also be deposited, handle, print simultaneously the real-time monitoring of experiment condition all data, uses for the later stage further investigation.
The beneficial effects of the utility model are: can realize under the single-phase convection heat exchange situation that the experimental study of single tube and pipe bundle heat exchanger heat transfer and flow resistance characteristics is that heat exchanger tube exploitation, optimal design and heat exchanger technology are reformed requisite important tests device.It is existing that this device can try: conduct heat to the enhanced tube of difformity and different geometrical size and the experimental study of resistance to flow (1).(2) shell-and-tube heat exchanger of different stringing modes and different structure is conducted heat and the experimental study of resistance to flow.(3) experiment process is wide, can carry out the experimental study of single tube and pipe bundle heat exchanger in the very wide reynolds number range in laminar region, zone of transition and turbulent region, and when examination record test figure.(4) measuring accuracy height, measurement that test unit is equipped with and acquisition system precision are all more than 0.5 grade; In addition, for the accuracy that guarantees to measure under the low reynolds number, test unit also is provided with special pipeline, so that adopt weight method to improve the flow measurement precision.
Test unit of the present utility model can be to the single tube of difformity, different geometrical size, and the shell-and-tube heat exchanger of different stringing modes carries out the experimental study of single-phase water-water heat exchange.Thereby for the technical renovation of exploitation, optimal design and the heat interchanger of heat exchange element provides the reliable technique support.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is the single pipe heat exchanger structural representation that adopts in the utility model.
Fig. 3 a is the pipe pipe bundle heat exchanger structural representation that adopts in the utility model.
Fig. 3 b is the A-A cut-open view of Fig. 3 a.
Fig. 4 is the flat tube pipe bundle heat exchanger structural representation that adopts in the utility model.
Fig. 5 is the data acquisition system (DAS) structural representation that adopts in the utility model.
Embodiment
For example the utility model is done more detailed description below in conjunction with accompanying drawing:
The implication of each symbol is among Fig. 1-5: 1, the pond, 2, the self sucking high-pressure pump, 3, filtrator, 4, elevated tank, 5, voltage stabilizer, 6, turbo flow meter, 7, variable valve, 8, thermopair, 9, pipe bundle heat exchanger, 10, thermopair, 11, pressure difference transmitter, 12, thermopair, 13, thermopair, 14, single pipe heat exchanger, 15, pressure difference transmitter (or inclination minute-pressure water column differential manometer), 16, variable valve, 17, electric heating water tank, 18, electric heater, 19, high pressure pipe pump, 20, filtrator, 21, voltage stabilizer, 22, turbo flow meter, 23, variable valve, 24, thermopair, 25, thermopair, 26, pressure difference transmitter, 27, thermopair, 28, thermopair.29, heat-transfer pipe, 30, sleeve pipe, 31, sealing gasket, 32, the sleeve pipe welding flange, 33, the pressure measurement ring, 34, seal flange, 35, supported flange, 36, bolt, 37, screw, 38, packing washer, 39, sealing gasket, 40, the cutting ferrule loose joint, 41, the sleeve pipe joint flange, 42, bolt.43, flange, 44, pressure measurement takes over, 45, end socket, 46, tube sheet, 47, cylindrical shell, 48, pull bar, 49, baffle.50, flange, 51, pressure measurement takes over, 52, end socket, 53, tube sheet, 54, cylindrical shell, 55, pull bar, 56, baffle.
Embodiment 1: in conjunction with the accompanying drawings 1:
One-piece construction is mainly by pond 1, self sucking high-pressure pump 2, filtrator 3, voltage stabilizer 5, turbo flow meter 6, variable valve 7, thermopair 8, pipe bundle heat exchanger 9, thermopair 10, pressure difference transmitter 11, thermopair 12, thermopair 13, single pipe heat exchanger 14, pressure difference transmitter (or inclination minute-pressure water column differential manometer) 15, electric heating water tank 17, electric heater 18, high pressure pipe pump 19, filtrator 20, voltage stabilizer 21, turbo flow meter 22, variable valve 23, thermopair 24, thermopair 25, pressure difference transmitter 26, thermopair 27, thermopair 28 connects to form.
Be used for single tube single-phase convection heat exchange test, its technical scheme 1 is: cold water side, starting self sucking high-pressure pump 2 makes cold water through filter 3, voltage stabilizer 5, turbo flow meter 6, flow enters test section after being regulated by variable valve 7, through after the heat exchange, the export pipeline of flowing through again flow back in the pond 1 cold water in test section.The cold water out temperature is measured by thermopair 12, thermopair 13.Hot water side, at first control the temperature that electric heater 18 is heated to the water in the electric heating water tank 17 appointment, open high pressure pipe pump 19 with hot water process filter 20, voltage stabilizer 21, turbo flow meter 22, by entering test section behind the variable valve 23 adjusting flows, through after the heat exchange, the export pipeline of flowing through again flow back into electric heating water tank 17 to hot water in test section.Hot water entrance's temperature is measured by thermopair 28, thermopair 27.
When the cold water flow of testing requirements is lower than the effective range of flowmeter, technical scheme 2 is adopted in single tube single-phase convection heat exchange test: self sucking high-pressure pump 2 is sent into elevated tank 4 with cold water through filter 3, provide pressure head by elevated tank, make cold water enter test section, in test section,,, regulate flow by variable valve 16 directly to the collection container discharging through after the heat exchange, adopt weight method to measure flow, the hot water circulation mode is constant.
When being used for single tube cold conditions resistance test, its technical scheme is: when the cold water flow of testing requirements reaches the effective range of flowmeter, the cold water recycle design of employing scheme 1, when the cold water flow of testing requirements is lower than the effective range of flowmeter, the cold water recycle design of employing scheme 2, the cold water out temperature is measured by thermopair 12, thermopair 13, and tube drop is measured by pressure difference transmitter (or inclination minute-pressure water column differential manometer) 15.Close hot water circulation.
Be used to restrain single-phase convection heat exchange and resistance test, its technical scheme is: cold water and hot water circulation mode and single column run scheme 1 are basic identical, just single pipe heat exchanger 14 is changed into pipe bundle heat exchanger 9, the cold water out temperature changes by thermopair 8, thermopair 10 to be measured, hot water entrance's temperature changes by thermopair 25, thermopair 24 to be measured, the tube side pressure drop is measured by pressure difference transmitter 11, and shell-side pressure drop is measured by pressure difference transmitter 26.
Above-described only is preferred implementation of the present utility model, should be pointed out that different according to the characteristics of developmental tube and Pipe bundle structure pattern, and the structure of test section can be made corresponding adjustment, does not enumerate one by one at this.In addition, for those skilled in the art, under the prerequisite that does not break away from the utility model principle, can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (4)
1. multifunctional wide flow process single-phase convection heat exchange test unit, it is characterized in that: mainly by pond (1), self sucking high-pressure pump (2), first filtrator (3), second filtrator (20), elevated tank (4), first voltage stabilizer (5), second voltage stabilizer (21), first turbo flow meter (6), second turbo flow meter (22), test section, electric heating water tank (17), high pressure pipe pump (19), temperature measurement system, differential pressure measurement system and data acquisition system (DAS) are formed, described test section is divided into single pipe heat exchanger (14) and pipe bundle heat exchanger (9), single pipe heat exchanger (14) and pipe bundle heat exchanger (9) all adopt countercurrent heat exchange method, single pipe heat exchanger (14) and pipe bundle heat exchanger (9) are cold, advancing of hot water, outlet all connects identical pipeline, separate with valve each other, the cold water inlet of described single pipe heat exchanger (14) and pipe bundle heat exchanger (9) is divided into two branch roads, wherein a branch road connects first turbo flow meter (6) successively by pipeline, first voltage stabilizer (5), first filtrator (3), self sucking high-pressure pump (2) and pond (1), another branch road connects elevated tank (4) by pipeline, the water inlet pipe of elevated tank (4) connects first filtrator (3) successively, self sucking high-pressure pump (2) and pond (1), run-down pipe directly connects pond (1), described single pipe heat exchanger (14) and pipe bundle heat exchanger (9) cooling water outlet are divided into two branch roads, wherein a branch road connects pond (1) by pipeline, another branch road is directly to environmental emission, the hot water inlet of described single pipe heat exchanger (14) and pipe bundle heat exchanger (9) is connected second turbo flow meter (22) successively by pipeline, second voltage stabilizer (21), second filtrator (20), high pressure pipe pump (19) and electric heating water tank (17), the hot water outlet of described heat interchanger connects electric heating water tank (17) by pipeline.
2. multifunctional wide flow process single-phase convection heat exchange test unit according to claim 1, it is characterized in that: self sucking high-pressure pump (2) and high pressure pipe pump (19) are equipped with bypass circulation, wherein the bypass circulation of self sucking high-pressure pump (2) is connected with pond (1), the bypass circulation of high pressure pipe pump (19) is connected with electric heating water tank (17), and bypass circulation is regulated pressure head and flow by controlling opening of valve.
3. multifunctional wide flow process single-phase convection heat exchange test unit according to claim 1, it is characterized in that: first turbo flow meter (6) and second turbo flow meter (22) all adopt the flowmeter group, wherein, the first turbo flow meter group is made up of three turbo flow meters, and measurement range reaches 0.4m
3/ h～40m
3/ h, the flow size is controlled by variable valve, and the second turbo flow meter group is made up of two turbo flow meters, and measurement range reaches 0.4m
3/ h～20m
3/ h, the flow size is controlled by variable valve.
4. multifunctional wide flow process single-phase convection heat exchange test unit according to claim 1, it is characterized in that: electric heating water tank is provided with heating rod in (17), the rated voltage of single heating rod is 380V, power is 4kW, and general power is 200kW, and it is 17 groups that all heating rods are divided into, wherein 16 groups is 12kW, 1 group is 8kW, by control system control, regulates the programming rate of hot water in the electric heating water tank by the unlatching number of control electric heater.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206590264U CN201945567U (en) | 2010-12-14 | 2010-12-14 | Multi-functional wide-flowing path one-phase heat convection testing apparatus |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206590264U CN201945567U (en) | 2010-12-14 | 2010-12-14 | Multi-functional wide-flowing path one-phase heat convection testing apparatus |
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| CN201945567U true CN201945567U (en) | 2011-08-24 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102081060A (en) * | 2010-12-14 | 2011-06-01 | 哈尔滨工程大学 | Multifunctional wide flow single-phase convective heat exchange test device |
| CN104966536A (en) * | 2015-07-14 | 2015-10-07 | 西安交通大学 | High-temperature working medium heat exchange test system using heat conducting oil as hot fluid and test method |
| CN106441797A (en) * | 2016-08-25 | 2017-02-22 | 中国电子科技集团公司第十研究所 | Automatic cold plate flow resistance testing system |
| CN107255652A (en) * | 2017-06-02 | 2017-10-17 | 中国科学院合肥物质科学研究院 | The heat exchanger performance testing device tested under low temperature in the range of large Reynold number |
| CN111169656A (en) * | 2020-01-07 | 2020-05-19 | 西北工业大学 | Convective cooling heat transfer test device |
| CN111781235A (en) * | 2020-07-07 | 2020-10-16 | 西安交通大学 | Experimental device and method for simulating thermal influence of fuel surface sediments on reactor core |
| CN114486307A (en) * | 2021-12-30 | 2022-05-13 | 北京动力机械研究所 | Flowing heat exchange experimental device of micro-tube bundle precooler |
-
2010
- 2010-12-14 CN CN2010206590264U patent/CN201945567U/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102081060A (en) * | 2010-12-14 | 2011-06-01 | 哈尔滨工程大学 | Multifunctional wide flow single-phase convective heat exchange test device |
| CN102081060B (en) * | 2010-12-14 | 2012-07-11 | 哈尔滨工程大学 | Multifunctional wide flow single-phase convective heat exchange test device |
| CN104966536A (en) * | 2015-07-14 | 2015-10-07 | 西安交通大学 | High-temperature working medium heat exchange test system using heat conducting oil as hot fluid and test method |
| CN104966536B (en) * | 2015-07-14 | 2017-06-20 | 西安交通大学 | A kind of high temperature refrigerant heat transfer experiments system and method with conduction oil as hot fluid |
| CN106441797A (en) * | 2016-08-25 | 2017-02-22 | 中国电子科技集团公司第十研究所 | Automatic cold plate flow resistance testing system |
| CN106441797B (en) * | 2016-08-25 | 2019-01-08 | 中国电子科技集团公司第十研究所 | The automatic flow resistance test macro of cold plate |
| CN107255652A (en) * | 2017-06-02 | 2017-10-17 | 中国科学院合肥物质科学研究院 | The heat exchanger performance testing device tested under low temperature in the range of large Reynold number |
| CN111169656A (en) * | 2020-01-07 | 2020-05-19 | 西北工业大学 | Convective cooling heat transfer test device |
| CN111781235A (en) * | 2020-07-07 | 2020-10-16 | 西安交通大学 | Experimental device and method for simulating thermal influence of fuel surface sediments on reactor core |
| CN114486307A (en) * | 2021-12-30 | 2022-05-13 | 北京动力机械研究所 | Flowing heat exchange experimental device of micro-tube bundle precooler |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20110824 Effective date of abandoning: 20120711 |