CN103592142A - System for testing heat transfer and resistance characteristics of large-size generating equipment heat exchanger - Google Patents
System for testing heat transfer and resistance characteristics of large-size generating equipment heat exchanger Download PDFInfo
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- 238000012360 testing method Methods 0.000 title claims abstract description 155
- 238000012546 transfer Methods 0.000 title claims abstract description 25
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 124
- 238000001816 cooling Methods 0.000 claims abstract description 30
- 238000010438 heat treatment Methods 0.000 claims abstract description 17
- 239000000446 fuel Substances 0.000 claims description 23
- 230000008676 import Effects 0.000 claims description 18
- 230000008602 contraction Effects 0.000 claims description 16
- 238000000034 method Methods 0.000 claims description 11
- 238000009423 ventilation Methods 0.000 claims description 9
- 230000001105 regulatory effect Effects 0.000 claims description 7
- 239000012774 insulation material Substances 0.000 claims description 3
- 239000003921 oil Substances 0.000 abstract 6
- 239000010724 circulating oil Substances 0.000 abstract 3
- 238000005259 measurement Methods 0.000 description 8
- 238000002474 experimental method Methods 0.000 description 6
- 239000000498 cooling water Substances 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
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- 230000002860 competitive effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
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- 238000004088 simulation Methods 0.000 description 1
- 238000004781 supercooling Methods 0.000 description 1
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Abstract
The invention relates to a system for testing heat transfer and resistance characteristics of a large-size generating equipment heat exchanger. The system comprises a straight flow type air duct system, a circulating water system and a circulating oil system. The straight flow type air duct system inhales air, after heating, flow mixing and rectification, the air flows into the air cooling device; after heat exchange through an air cooling device tester, hot water is inputted by a water pump to a cooling tower for cooling, the cooled water is heated by an air heater to realize water temperature required by a test and then flows into a heat exchanger tester to form a temperature-controllable circulating water system; oil in an oil tank is heated, the heated oil flows into the heat exchanger tester, the oil after heat exchange flows into an oil storage tank to form the circulating oil system; the circulating water system and the circulating oil system respectively realize closed circulating and are used for testing heat transfer coefficients and resistance characteristics of the heat exchanger. The test system can test heat transfer and flow resistance characteristics of the air cooling device and an oil cooling device, can realize water cycle utilization and greatly saves resources.
Description
Technical field
The present invention relates to large power generating equipment and use heat-exchange system field, be specifically related to a kind of test macro that is applicable to large power generating equipment heat exchanger heat transfer and drag characteristic.
Background technology
Heat interchanger is to realize exchange heat and transmit indispensable equipment, along with the development of society and economy, energy-efficiently to design of heat exchanger, has proposed new target.The heat transfer of heat interchanger and resistance performance are the very important indexs of heat interchanger, it is the prerequisite that guarantees medium to be cooled to assigned temperature, therefore heat transfer and resistance characteristic test-bed Shi Ge heat interchanger manufacturing enterprise heat exchanger research, the important tests equipment of manufacturing and verifying, its test findings will directly affect its heat interchanger product competitive power on market at home and abroad, and design is developed new and effective heat exchange equipment.
Air cooler discharge scope 4 ~ 90m for large power generating equipment
3/ h, oil cooler oil flow range 6 ~ 75 m
3/ h, for better simulation actual condition, heat exchanger heat transfer with discharge in drag characteristic test macro, oily flow should be consistent with actual range, and need to be high to parameter testing precision such as flow, temperature and pressures.Traditional heat exchangers heat transfer and resistance characteristic test system is difficult to realize quick adjustment, stable Cooling and Heat Source temperature and the high measuring accuracy controlled simultaneously.
Summary of the invention
The present invention is for fear of existing deficiency in prior art, a kind of test macro that is applicable to large power generating equipment heat exchanger heat transfer and drag characteristic is provided, cold and hot medium inlet temperature is controlled, flow is controlled, measuring accuracy is high can to realize in heat interchanger two kinds, and system stability is fast, be beneficial to data acquisition.
Technical scheme of the present invention is as follows:
The test macro that is applicable to large power generating equipment heat exchanger heat transfer and drag characteristic, is characterized in that: comprise that take single flow air-line system that air is medium, circulating water that the water of take is medium unifies and take the recycle oil system that oil is medium;
Described single flow air-line system comprises entrance, bringing-up section, mixed-rectification section, contraction section, air cooler test block, air mass flow testing element and ventilation blower, described entrance connects bringing-up section, bringing-up section connects mixed-rectification section, mixed-rectification section connects contraction section, contraction section end is connected with air cooler test block, and the import and export of air cooler test block is provided with temperature test element; The end of air cooler test block is connected with air mass flow testing element, and air mass flow testing element is connected to blower fan; Described air cooler test block is provided with oral siphon line and the water outlet pipeline being communicated with circulation; Circulation is connected with recycle oil system by oil cooler test block.
Described entrance need to be designed to make the air-flow can be from the smooth line style that enters airduct of all directions.
In described entrance, be provided with screen pack, it is dustproof that screen pack is used for anti-gray, plays the effect of filtration to being drawn into air in airduct.
In described bringing-up section, be provided with air heater, the heating power of air heater determines according to airduct sectional dimension and required heating-up temperature, can air heat is even.
Described mixed-rectification section is designed with wind direction bridge insert and honeycomb screen successively according to the flow direction of air.
Described wind direction bridge insert is for adjusting the air of airduct from level, vertical direction, and it is even as far as possible that air themperature is distributed.
So further, wind direction bridge insert can be designed to comprise the structure of horizontal direction bridge insert and vertical direction bridge insert, horizontal direction bridge insert comprises some parallel horizontally disposed window shutter windows, vertical direction bridge insert comprises the window shutter window of some parallel vertical settings, the window of horizontal direction bridge insert all connects by a trace, the window of vertical direction bridge insert also all connects by another trace, realizes the consistance of each window angular adjustment.
Further, described wind direction bridge insert is provided with and turns to governor motion, turns to governor motion for regulating the angle of window, is used for adapting to different wind speed experiment conditions, makes the air themperature that enters flow mixing device of heat exchanger experiment part distribute even as far as possible.
The described governor motion that turns to can be that one group of master gear and handwheel form or other mechanisms, regulates the outside handwheel of airduct to turn to, driven gear, and the wind direction bridge insert of gear driven airduct inside, realizes angle regulating function.
Described honeycomb screen is latticed grid, by honeycomb screen, can make the velocity magnitude of air-flow and direction be evenly distributed and air-flow is filtered.
The shrinkage curve of described contraction section should make flow velocity evenly increase vertically, does not produce boundary layer separation; At contraction section import and export wall, be parallel to the homogeneity that airduct axis guarantees to enter air cooler test block wind speed as far as possible.
Described circulation comprise cooling tower, reserve tank, water temperature machine, water circulating pump and flow rate test flowmeter, with the hot linked hot water piping of air cooler test block and cold line, valve; Be connected with water pump with the hot linked hot water piping of air cooler test block, water pump is connected to cooling tower, and cooling tower is connected with reserve tank, and reserve tank is connected with water temperature machine by another water pump, water temperature machine is connected with air cooler test block by cold line, forms closed circle water system.Specific works process is: after the circulating water temperature after the heat interchange of air cooler test block raises, water pump carries out cooling for water circulating pump is delivered to cooling tower, cooled water flows in reserve tank, water pump pumps into the water in reserve tank in water temperature machine, to be heated to test required water temperature, through pipeline, flow in air cooler test block again, form thus closed circle water system.
It is controlled that described water temperature machine can be realized coolant-temperature gage, and control accuracy is high.
In circulation, all pipelines should adopt insulation material to be incubated, and reduce the thermal loss of water in flow process.For Measurement accuracy flow, before flowmeter, filtrator should be installed.For Measurement accuracy, import and export water temperature, can mixing chamber be set respectively at heat exchanger inlet and outlet.The method that the measurement of air cooler test block import and export water temperature, oil cooler test block import and export water temperature all adopts three temperature sensors to average, has improved the reliability of test.In circulation pipeline, pipeline valve is arranged respectively in the front and back of each flow rate test element, cooling tower, water temperature machine, pump equipment, is convenient to switch stream, realizes circulation normal operation, and is convenient to the maintenance in later stage.
Described recycle oil system comprises fuel reserve tank, oil pump, oil heater and necessary pipe valve etc.
Described recycle oil system comprises fuel reserve tank, oil pump, oil heater and necessary pipe valve etc.; Described recycle oil system comprises fuel reserve tank, oil pump, oil heater and necessary pipe valve; Fuel reserve tank is connected with oil heater, and oil heater is connected with test oil refrigeratory, and test oil refrigeratory is connected to again fuel reserve tank, forms recycle oil system.Namely, the oil in fuel reserve tank enters in test oil refrigeratory through after oil heater heating, and oil after heat interchange flows in fuel reserve tank, forms thus recycle oil system.The method that the measurement of oil cooler test block import and export oil temperature all adopts three temperature sensors to average, has improved the reliability of test.In recycle oil system pipeline, pipeline valve is arranged respectively in the front and back of each flow rate test element, oil heater, oil pump equipment, is convenient to switch stream, realizes the normal operation of recycle oil system, and is convenient to the maintenance in later stage.
The course of work of the present invention is as follows:
Single flow air-line system,, is entered in air cooler test block in the air intake air-line system in environment by ventilation blower after air heater heating, bridge insert mixed flow and honeycomb screen rectified action; Hot water after air cooler test block exchange heat is input in cooling tower cooling by water pump, cooled water is heated to the required water temperature of test by air heater, enters in air cooler test block, has formed the circulation of controllable temperature; Oil in fuel reserve tank is pumped in oil heater and heats through oil pump, and the oil after heating enters in oil cooler test block, and the oil of process heat exchange enters in fuel reserve tank, has formed recycle oil system.
Beneficial effect of the present invention is as follows:
It is easy to adjust that the present invention has system, and human factor is few, and experiment condition and large power generating equipment can be good at coincideing with heat interchanger actual condition, and experiment condition is stable fast, and test data reliability is high.
Single flow air-line system of the present invention can provide temperature controlled air for air cooler test block, and speed air flow size is evenly distributed with direction; The direction that one group of bridge insert is used for regulating Air Flow is set in air-line system, and the angle of bridge insert is adjustable; The test of air cooler test block entrance wind-warm syndrome is tested by N temperature sensor, gets its mean value, and wherein N >=16, are integer; The angle of bridge insert is adjustable, makes N temperature sensor temperature reading approaching as far as possible.
In the present invention, circulation can realize that heat exchanger entrance water temperature is controlled, flow is controlled, and the system stability time is short, easy to adjust; Water after air cooler test block exchange heat, enters after the cooling of supercooling tower and the heating of water temperature machine, is adjusted to required temperature;
In the present invention, recycle oil system can realize that heat exchanger entrance oil temperature is controlled, flow is controlled, and the system stability time is short, easy to adjust;
The present invention is applicable to the test of the heat transfer and resistance characteristic of air cooler and oil cooler for large power generating equipment.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Wherein, Reference numeral is: 1 entrance, 2 air heaters, 3 contraction sections, 4 testpieces intake air temperature test blocks, 5 air cooler test blocks, 6 temperature test elements, 7 air mass flow testing elements, 8 ventilation blowers, 9-11 air cooler test block inlet water temperature sensor, 12 inlet water pressure tables, 14 water ga(u)ges, 16 water ga(u)ges, 18 water ga(u)ges, 20 water temperature machines, 23 water pumps, 24 reserve tanks, 25 cooling towers, 26 water pumps, 28 oil cooler test block outlet water pressure gauges, 29-31 oil cooler test block outlet cooling-water temperature sensor, 32 oil cooler test blocks, 33-35 oil cooler test block inlet water temperature sensor, 36 oil cooler test block import water pressure gauges, 39 oil flowmeters, 41 fuel reserve tanks, 43 oil pumps, 46 oil heaters, 48 oil flowmeters, 50 oil flowmeters, 51 oil cooler test blocks are imported and exported oil pressure transmitter, 52 oil cooler test block import oil pressure gauges, 53-55 oil cooler test block imported oil temperature sensor, 56-57 oil cooler test block outlet oil temperature sensor, 59 oil cooler test block outlet oil pressure tables, 61-63 air cooler test block outlet cooling-water temperature sensor, 64 outlet water pressure gauges, 13, 15, 17, 19, 21, 27, 37, 38, 40, 42, 44, 45, 47, 49 are the corresponding valve of each pipeline.
Embodiment
As shown in Figure 1, a kind of test macro that is applicable to large power generating equipment heat exchanger heat transfer and drag characteristic, comprises and take single flow air-line system that air is medium, circulating water that water the is medium recycle oil system that oil is medium of unifying.
Described single flow air-line system comprises entrance 1, heating mixed flow section, contraction section 3, testpieces intake air temperature test 4, air cooler test block 5, testpieces air outlet temperature test part 6, air mass flow testing element 7 and ventilation blower 8.
Described entrance 1 connects heating mixed flow section, heating mixed flow section connects contraction section 3, contraction section 3 ends are connected with air cooler test block 5, air cooler test block 5 import and exports are provided with testpieces intake air temperature test block 4 and testpieces air outlet temperature test part 6, in the long straight length that air cooler test block end connects, arrange air mass flow testing element 7, air mass flow testing element 7 is connected to ventilation blower 8;
Described heat interchanger test part 5 is provided with oral siphon line and the water outlet pipeline being communicated with circulation; Circulation is connected with recycle oil system by oil cooler test block 32.
Described entrance 1 need to be designed to make the air-flow can be from the smooth line style that enters airduct of all directions.
In described entrance 1, be provided with screen pack, it is dustproof that screen pack is used for anti-gray, plays the effect of filtration to being drawn into air in airduct.
In described heating mixed flow section 2, be provided with air heater 2, the heating power of air heater 2 determines according to airduct sectional dimension and required heating-up temperature, can air heat is even.
Described heating mixed flow section is designed with wind direction bridge insert and honeycomb screen successively according to the flow direction of air.
Described wind direction bridge insert is for adjusting the air of airduct from level, vertical direction, and it is even as far as possible that air themperature is distributed.
So further, wind direction bridge insert can be designed to comprise the structure of horizontal direction bridge insert and vertical direction bridge insert, horizontal direction bridge insert comprises some parallel horizontally disposed window shutter windows, vertical direction bridge insert comprises the window shutter window of some parallel vertical settings, the window of horizontal direction bridge insert all connects by a trace, the window of vertical direction bridge insert also all connects by another trace, realizes the consistance of each window angular adjustment.
Further, described wind direction bridge insert is provided with and turns to governor motion, turns to governor motion for regulating the angle of window, is used for adapting to different wind speed experiment conditions, makes the air themperature that enters flow mixing device of heat exchanger experiment part distribute even as far as possible.
The described governor motion that turns to can be comprised of one group of master gear and handwheel or other mechanisms, realizes angle regulating function.
Described honeycomb screen is latticed grid, by honeycomb screen, can make the velocity magnitude of air-flow and direction be evenly distributed and air-flow is filtered.
The shrinkage curve of described contraction section 3 should make flow velocity evenly increase vertically, does not produce boundary layer separation; At contraction section import and export wall, be parallel to the homogeneity that airduct axis guarantees to enter air cooler test block wind speed as far as possible.
Described circulation comprise cooling tower 25, reserve tank 24, water temperature machine 20, water circulating pump 23 and flow rate test flowmeter 14,16,18, with the hot linked hot water piping of air cooler test block 5 and cold line, valve; Be connected with water pump 26 with the hot linked hot water piping of air cooler test block 5, water pump 26 is connected to cooling tower 25, cooling tower 25 is connected with reserve tank 24, reserve tank 24 is connected with water circulating pump 23 by valve 22, water pump 23 is back to reserve tank 24 by the pipeline with valve 21, water circulating pump 23 is connected to water temperature machine 20 simultaneously, and water temperature machine 20 is connected with air cooler test block 5 by cold line, forms closed circle water system.
Described and the hot linked hot water piping of air cooler test block 5 is disposed with outlet water pressure gauge 64, air cooler test block outlet cooling-water temperature sensor 61-63, valve 60 along water (flow) direction.
Described cold line is disposed with on valve 19, water ga(u)ge 18, water ga(u)ge 14 in parallel and 16(parallel line and is respectively arranged with valve 15,17 along water (flow) direction), valve 13, inlet water pressure table 12, air cooler test block inlet water temperature sensor 9-11.
Water ga(u)ge 14,16 in parallel is also provided with the water inlet circuit that is connected to oil cooler test block 32, and valve 37, oil cooler test block import water pressure gauge 36, oil cooler test block inlet water temperature sensor 33-35 are installed on this circuit successively; The water outlet connection of oil cooler test block 32 is to water pump 26, and this goes out in water line oil cooler test block outlet cooling-water temperature sensor 29-31 is installed successively, oil cooler test block exports water pressure gauge 28, valve 27.
Specific works process is: after the circulating water temperature after 5 heat interchange of air cooler test block raises, water pump 26 carries out cooling for water circulating pump being delivered to cooling tower 25, cooled water flows in reserve tank 24, water pump 23 pumps into the water in reserve tank 24 in water temperature machine 20, to be heated to test required water temperature, through pipeline, flow in air cooler test block 5 again, form thus closed circle water system.
It is controlled that described water temperature machine 20 can be realized coolant-temperature gage, and control accuracy is high.
In circulation, all pipelines should adopt insulation material to be incubated, and reduce the thermal loss of water in flow process.For Measurement accuracy flow, before flowmeter, filtrator should be installed.For Measurement accuracy, import and export water temperature, can mixing chamber be set respectively at heat exchanger inlet and outlet.The method that the measurement of air cooler test block 5 import and export water temperatures, oil cooler test block import and export water temperature all adopts three temperature sensors to average, has improved the reliability of test.In circulation pipeline, pipeline valve is arranged respectively in the front and back of each flow rate test element 14,16,18, cooling tower 25, water temperature machine 20, water pump 23 equipment, is convenient to switch stream, realizes circulation normal operation, and is convenient to the maintenance in later stage.
Described recycle oil system comprises fuel reserve tank 41, oil pump 43, oil heater 46 and necessary pipeline valve etc.; Valve 44, oil pump 43, valve 45 are installed on the associated line between fuel reserve tank 41 and oil heater 46 successively, and oil pump 43 turns back to fuel reserve tank 41 by being provided with the pipeline of valve 42; Oil heater 46 is connected with oil cooler test block 32, and oil cooler test block 32 is connected to again fuel reserve tank 41, forms recycle oil system.Namely, oil in fuel reserve tank 41 after oil heater 46 heating by being arranged in parallel the oil flowmeter 48,50 of valve 47,49, by oil cooler test block import oil pressure gauge 52, oil cooler test block imported oil temperature sensor 53-55, then enter in test oil refrigeratory 32 again, and oil after heat interchange successively through oil cooler test block outlet oil temperature sensor 56-57, oil cooler test block outlet oil pressure table 59, valve 38, oil flowmeter 39, valve 40 is last flows in fuel reserve tank 41, forms thus recycle oil system.The method that the measurement that oil cooler test block 32 is imported and exported oil temperature all adopts three temperature sensors to average, has improved the reliability of test.Between described oil cooler test block import oil pressure gauge 52 and oil cooler test block outlet oil pressure table 59, connect and oil flowmeter 50 is installed; Pipeline valve is arranged respectively in front and back by each flow rate test element 39,48,50, oil heater 46, oil pump 43 equipment in recycle oil system pipeline, is convenient to switch stream, realizes the normal operation of recycle oil system, and is convenient to the maintenance in later stage.
The course of work of the present invention is as follows:
Single flow air-line system,, is entered in air cooler test block 5 in the air intake single flow air-line system in environment by ventilation blower 8 after air heater 2 heating, bridge insert mixed flow and honeycomb screen rectified action; Hot water after air cooler test block 5 exchange heat is input in cooling tower 25 cooling by water pump 26, cooled water is heated to the required water temperature of test by water temperature machine 20, enters in air cooler test block 5, has formed the circulation of controllable temperature; Oil in fuel reserve tank 41 is pumped in oil heater 46 and heats through oil pump 43, and the oil after heating enters in oil cooler test block 32, and the oil of process exchange heat enters in fuel reserve tank, has formed recycle oil system.
Claims (11)
1. the test macro that is applicable to large power generating equipment heat exchanger heat transfer and drag characteristic, is characterized in that: comprise that take single flow air-line system that air is medium, circulating water that the water of take is medium unifies and take the recycle oil system that oil is medium, described single flow air-line system comprises entrance (1), bringing-up section, mixed-rectification section, contraction section (3), air cooler test block (5), air mass flow testing element (7) and ventilation blower (8), described entrance (1) connects bringing-up section, bringing-up section connects mixed-rectification section, mixed-rectification section connects contraction section (3), contraction section (3) end is connected with air cooler test block (5), air cooler test block (5) import and export is provided with temperature test element (6), the end of air cooler test block (5) is provided with air mass flow testing element (7), air mass flow testing element (7) is connected to ventilation blower (8), described air cooler test block (5) is provided with oral siphon line and the water outlet pipeline being communicated with circulation, circulation is connected with recycle oil system by oil cooler test block.
2. the test macro that is applicable to large power generating equipment heat exchanger heat transfer and drag characteristic according to claim 1, it is characterized in that: described entrance (1) is air flow energy from the smooth line style that enters airduct of all directions, and is provided with screen pack in entrance (1).
3. the test macro that is applicable to large power generating equipment heat exchanger heat transfer and drag characteristic according to claim 1, it is characterized in that: described mixed-rectification section is designed with for from level successively according to the flow direction of air, vertical direction is adjusted the wind direction bridge insert of air and for the honeycomb screen of current-sharing air, described wind direction bridge insert comprises the structure of horizontal direction bridge insert and vertical direction bridge insert, horizontal direction bridge insert comprises some parallel horizontally disposed window shutter windows, vertical direction bridge insert comprises the window shutter window of some parallel vertical settings, the window of horizontal direction bridge insert all connects by a trace, the window of vertical direction bridge insert also all connects by another trace, realize the consistance of each window angular adjustment.
4. the test macro that is applicable to large power generating equipment heat exchanger heat transfer and drag characteristic according to claim 3, is characterized in that: described wind direction bridge insert is provided with and turns to governor motion, turns to governor motion for regulating the angle of window.
5. the test macro that is applicable to large power generating equipment heat exchanger heat transfer and drag characteristic according to claim 4, is characterized in that: described in turn to governor motion to comprise one group of gear and handwheel, handwheel is arranged at the outside of airduct; By control hand wheel, turn to, driven gear rotates, and gear rotates and drives described wind direction bridge insert to rotate, and realizes angle regulating function.
6. the test macro that is applicable to large power generating equipment heat exchanger heat transfer and drag characteristic according to claim 1, is characterized in that: described honeycomb screen is latticed grid.
7. the test macro that is applicable to large power generating equipment heat exchanger heat transfer and drag characteristic according to claim 1, is characterized in that: the shrinkage curve of described contraction section (3) should make flow velocity evenly increase vertically; At contraction section import and export wall, be parallel to airduct axis, to guarantee to enter the homogeneity of air cooler test block wind speed.
8. the test macro that is applicable to large power generating equipment heat exchanger heat transfer and drag characteristic according to claim 1, is characterized in that: described circulation comprise cooling tower (25), reserve tank (24), water temperature machine (20), water circulating pump (23) and flow rate test flowmeter (14,16,18), with the hot linked hot water piping of air cooler test block (5) and cold line, valve; Be connected with another water pump (26) with the hot linked hot water piping of air cooler test block (5), described water pump (26) is connected to cooling tower (25), cooling tower (25) is connected with reserve tank (24), reserve tank (24) is connected with water temperature machine (20) by water circulating pump (23), water temperature machine (20) is connected with air cooler test block (5) by cold line, forms closed circle water system.
9. the test macro that is applicable to large power generating equipment heat exchanger heat transfer and drag characteristic according to claim 1, is characterized in that: the pipeline in described circulation adopts insulation material.
10. the test macro that is applicable to large power generating equipment heat exchanger heat transfer and drag characteristic according to claim 1, is characterized in that: described recycle oil system comprises fuel reserve tank (41), oil pump (43), oil heater (46) and pipe valve; Fuel reserve tank (41) is connected with oil heater (46), and oil heater (46) is connected with test oil refrigeratory (32), and test oil refrigeratory (32) is connected to again fuel reserve tank (41), forms recycle oil system.
11. test macros that are applicable to large power generating equipment heat exchanger heat transfer and drag characteristic according to claim 1, it is characterized in that the course of work is as follows: described single flow air-line system by ventilation blower (8) by the air intake air-line system in environment, after air heater (2) heating, bridge insert mixed flow and honeycomb screen rectified action, enter in air cooler test block; Hot water after air cooler test block (5) exchange heat is input in cooling tower (25) cooling by water pump (26), cooled water is heated to the required water temperature of test by air heater (2), enter in air cooler test block (5), formed the circulation of controllable temperature; Oil in fuel reserve tank (41) is pumped in oil heater (46) and heats through oil pump (43), and the oil after heating enters in oil cooler test block (32), and the oil of process heat exchange enters in fuel reserve tank (41), has formed recycle oil system.
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Application publication date: 20140219 |