CN203177465U - Electric preheating high-temperature high-pressure heat storing air heating device - Google Patents

Electric preheating high-temperature high-pressure heat storing air heating device Download PDF

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Publication number
CN203177465U
CN203177465U CN2013200467679U CN201320046767U CN203177465U CN 203177465 U CN203177465 U CN 203177465U CN 2013200467679 U CN2013200467679 U CN 2013200467679U CN 201320046767 U CN201320046767 U CN 201320046767U CN 203177465 U CN203177465 U CN 203177465U
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China
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heat
honeycomb
accumulation body
heater
pressure
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Expired - Lifetime
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CN2013200467679U
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郭孝国
毕志献
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China Academy of Aerospace Aerodynamics CAAA
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China Academy of Aerospace Aerodynamics CAAA
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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    • Y02E60/14—Thermal energy storage

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Abstract

The utility model discloses an electric preheating high-temperature high-pressure heat storing air heating device which comprises a pressure-resistant shell body (1), a sliding cylinder (2), a heat insulating layer (3), a liner (4) made of heat insulating materials, a honeycomb heat storing body (5), a resistance heating body (6), an electric connector sealing flange (7) and a power supply cabinet (8). The pressure-resistant shell body (1), the sliding cylinder (2), the heat insulating layer (3), the liner (4) made of heat insulating materials, the honeycomb heat storing body (5) and the resistance heating body (6) are sequentially installed from outside to inside. According to the electric preheating high-temperature high-pressure heat storing air heating device, radial gaps are reserved in the honeycomb heat storing combination body for transmitting heat in a radiating mode and the resistance heating body is internally arranged. Transmission of heat can be accelerated under the common action of heat radiation and heat transmission. Large flow of high-temperature high-pressure air can be heated by the electric preheating high-temperature high-pressure heat storing air heating device.

Description

Electric preheating HTHP heat accumulating type air heating apparatus
Technical field
The utility model belongs to storage heater preheating technology field, particularly a kind of electric preheating HTHP heat accumulating type air heating apparatus for the preheating of conventional hypersonic wind tunnel primary air.
Background technology
In hypersonic wind tunnel, air-flow is sharply acceleration meeting generation condensation in jet pipe, can avoid condensation by improving the cup gas flow temperature, and the heater that is used for raising air-flow stagnation temperature is the critical component of wind-tunnel, also is the difficult point that conventional hypersonic wind tunnel designs.
At present, the heater for conventional hypersonic wind tunnel has the continuous heated type of resistance and heat accumulating type.Wherein, the continuous heated type of resistance normally is arranged to definite shape to resistance heating element, by structural design, guarantees insulation and the rational ventilation area of heater internal electrical thermal element; After the heating energising, reach a high temperature in a short period of time, pressure-air flows through the gap of heating, and heat is taken away, and obtains high temperature air at heater outlet.Stratie mainly refers to: metallic resistance band, resistance tube, carborundum heat generating member etc.Resistance continous way electric heater needs very big electrical power and voltage adjusting device, and the relative utilization rate of equipment is smaller, and the ordinary test chamber does not provide powerful power-supply device, has limited the use of this mode of heating.Domestic conventional hypersonic wind tunnel FD-03 the earliest, secondary heater, power are 400KW.The conventional hypersonic wind tunnel FL-31 of China's air ARDE, heater power is 8000KW.And according to the high-power heater of air stream heating power design-build, during wind tunnel operation, air-flow heats up slow, and start-up course is long, and temperature does not reach designing requirement, has reduced the wind tunnel test equipment scope of application.
Heat accumulating type is exactly the inner heat-storing material of installing of heater, carries out the preheating of heat-storing material before heater uses earlier, and heat is stored in the heater heat-storing material, and in the use, the heat transferred air, heater outlet obtains high temperature gas flow by heat-storing material.The preheating method of heater mainly contains: fuel combustion, eddy-current heating, resistive element preheating.Heat the pre-hot heater of resistive element of heat storage at present in the dependence heat radiation of usefulness, heat storage is along the airflow direction layout, air-flow is by the slit heat exchange of heat storage, resistive element is vertically installed, layout is disperseed, and preheating time is long, is subjected to temperature difference influence, the heat-storing material preheat temperature is not high, and the serviceability temperature of this class heater is all below 650 ℃.For example, the NWH-0.5m of South Airways hypersonic wind tunnel, heat storage are hot investment casting, and the slit is than 0.33, and maximum temperature is 600 ℃.FD-07 wind-tunnel storage heater heat storage is steel plate combined, the slit ratio is: 0.28, maximum temperature is 650 ℃, and employing fuel-firing preheating, be easy to generate carbon distribution on the heat storage, need auxiliary equipment such as smokejack and high pressure resistant chimney valve, increase equipment investment, used heat can't reclaim, and waste is serious.
In addition, the preheating method of eddy-current heating is the new heating technique of development in recent years, produce eddy current by electromagnetic induction in metal heat storage inside, Fast Heating metal heat-storing material, the highest fusion temperature that can reach metal of temperature breaks through the not high restriction of radiation heating temperature.But eddy-current heating adopts the external induction coil that twines of Heating tube, for fear of the pressure hull heating, needs magnetic conductor to shield, and takies the heater inner space in a large number, increases the manufacturing cost of pressure hull.In the enclosure space, it is normal temperature that magnetic conductor requires environment temperature.Heater in use, under the high-temperature and high-pressure conditions, atmospheric density is very big, temperature height, the heat insulation very difficult solution of magnetic conductor.
The utility model content
The purpose of this utility model is, overcomes the deficiencies in the prior art, provides that a kind of heating-up temperature is higher, heat energy utilization rate height, homogeneous heating, the safer electric preheating HTHP heat accumulating type air heating apparatus of use.
Technical solution of the present utility model is: electric preheating HTHP heat accumulating type air heating apparatus comprises pressure hull, slippage tube, thermal insulation layer, heat-barrier material liner, honeycomb heat accumulation body, resistance heater, electric connection sealing flange and power cabinet; Resistance heater, honeycomb heat accumulation body, heat-barrier material liner, thermal insulation layer, slippage tube and pressure hull are installed from inside to outside successively; Resistance heater is installed in the middle circular hole of honeycomb heat accumulation body vertically, and length is identical with honeycomb heat accumulation body, and by the gap between the honeycomb heat accumulation body cellular board, homogeneous radiation is conducted heat; Slippage tube and heat-barrier material liner be thermal insulation layer fixedly; Power cabinet provides power supply by the electric connection sealing flange for resistance heater; Described thermal insulation layer is the annulus that refractory material processes, and is respectively high-temperature region and low-temperature space inside and outside the annulus; The heat-barrier material liner outside is heat-barrier material fixedly, and inside is smooth cylindrical shell, is used for supporting, laying honeycomb heat accumulation body.
Described honeycomb heat accumulation body comprises connecting bolt, nut, supporting sleeve and honeycomb regenerator sheet; Connecting bolt, nut and supporting sleeve and honeycomb regenerator sheet adopt identical materials.
Described heating element device comprises fastening stud, termination nut, alundum tube, sapphire discs, resistance heating element, end sapphire discs and exit conductive pole; The heater element is installed in alundum tube, sapphire discs and the end sapphire discs; Whole heating element device uses fastening stud to string together, reach the length of setting after, two ends are fastening with the termination nut; Alundum tube is enclosed within on the fastening stud, and two ends are sapphire discs, and in the parallel fixing hole that pierces on the sapphire discs of resistance heating element, the end sapphire discs is installed in a side, supports the exit conductive pole.
The utility model advantage compared with prior art is:
1) the utility model adopts the honeycomb regenerator assembly radially to leave the built-in design of gap radiant heat transfer and resistance heater, by heat radiation and heat conducting acting in conjunction, can accelerate the heat transmission.Wherein adopt cellular heat storage to form the gas channel of certain-length in the pressure casing body, resistance heating element is installed at the heat storage middle part, heat is mainly by heat radiation, by the heat storage radial clearance, evenly the preheating heat-storing material is to the temperature that needs, air-flow carries out heat exchange by the honeycomb aperture during heat exchange, realizes high temperature, the pressure-air heating of big flow.
2) the utility model adopts the form of honeycomb metal heat storage built-in heating body, avoid vertical installing hole processing that resistive element must carry out recuperation layer and pressure hull vertically is installed, recuperation layer is easy to monoblock cast, and effect of heat insulation is better, pressure hull has reduced perforate quantity, and intensity is higher.During the maintenance heater, need not dismantle thermal insulation layer and heat storage, replacing is just passable as long as a pre-thermal element is released from the heat storage endoporus, avoid overhauling heater at every turn, all must destroy heat-storing material, change again, can solve the problem that heater safety inspection and heater element are changed.
3) the utility model adopts the honeycomb metal heat storage, during work, carries out the air heat exchange, heat exchange area is more than 2 times of homogenous quantities metal sheet heat storage, can be with air heat to the temperature that needs in short heat exchanger channels, the temperature efficiency height, Btu utilization is abundant.
4) the utility model can be installed and used different types of resistance preheat element, pre-thermal element is according to the position of heat storage endoporus and size design, installation, pre-thermal element can use the metallic resistance band to combine, also can use the carborundum heater element, design objective according to air heater, the selection heating-up temperature conforms to, and the preheating resistance material that cost performance is higher is the storage heater preheating of different temperatures grade.
Description of drawings
Fig. 1 is heater assembly schematic diagram of the present invention;
Fig. 2 is heater assembly cutaway view of the present invention;
Fig. 3 is cellular heat storage schematic diagram;
Fig. 4 is cellular heat storage cutaway view;
Fig. 5 is the resistance heater schematic diagram.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is described further.
As shown in Figure 1, 2, electric preheating HTHP heat accumulating type air heating apparatus of the present utility model comprises pressure hull 1, slippage tube 2, thermal insulation layer 3, heat-barrier material liner 4, honeycomb heat accumulation body 5, resistance heater 6, electric connection sealing flange 7 and power cabinet 8; Resistance heater 6, honeycomb heat accumulation body 5, heat-barrier material liner 4, thermal insulation layer 3, slippage tube 2 and pressure hull 1 are installed from inside to outside successively; Resistance heater 6 is installed in the circular hole of honeycomb heat accumulation body 5 centres vertically, and length is identical with honeycomb heat accumulation body 5, and by the gap between honeycomb heat accumulation body 5 cellular boards, homogeneous radiation is conducted heat; Slippage tube 2 and heat-barrier material liner 4 be thermal insulation layer 3 fixedly; Power cabinet 8 provides power supply by electric connection sealing flange 7 for resistance heater 6.
Pressure hull 1 is the device that bears the HTHP air, is forged by high-temperature alloy material and processes the rated designs pressure 12.0MPa in the present embodiment.Slippage tube 2 is fixing outer field cylindrical shells of heat-barrier material, when the quick pressurising of HTHP air and pressure release, prevents thermal insulation layer 3 distortion.Thermal insulation layer 3 is annulus that refractory material processes, and is respectively high-temperature region and low-temperature space inside and outside the annulus.Heat-barrier material liner 4 outsides are heat-barrier material fixedly, and inside is smooth cylindrical shell, is used for supporting, laying honeycomb heat accumulation body 5.
Honeycomb heat accumulation body 5 is critical components of complete equipment, during heating, the innermost layer raying temperature of honeycomb heat accumulation body 5 is higher, conduct by heat, transmit heat to skin, also more intense by the heat radiation heat in honeycomb sheet gap in addition, under hot conditions, it is even that the heat storage skin also can reach temperature fast.Shown in Fig. 4,5, honeycomb heat accumulation body 5 comprises connecting bolt 51, nut 52, supporting sleeve 53 and honeycomb regenerator sheet 54.Connecting bolt 51 and nut 52 adopts the material the same with honeycomb regenerator sheet 54, and middle crack is with material supporting sleeve 53, and spacing is definite according to heat storage plate size and temperature radiation intensity, guarantees that preheating is even, and heat exchange area is big.
Figure 5 shows that heating element device 6, comprise fastening stud 61, termination nut 62, alundum tube 63, sapphire discs 64, resistance heating element 65, end sapphire discs 66 and exit conductive pole 67.Heater element 65 uses the high temperature resistance heating tape to combine, and is installed in alundum tube 63, sapphire discs 64 and the end sapphire discs 66.Whole heating element device 6 uses fastening studs 61 to string together, reach the length of setting after, two ends are fastening with termination nut 62; Alundum tube 63 is enclosed within on the fastening stud 61, and two ends are sapphire discs 64, in the resistance heating element 65 parallel fixing holes that pierce on the sapphire discs 64, requires to carry out the end according to circuit connection and connects, and guarantees electric insulation and thermal-radiating load.End sapphire discs 66 is installed in a side, supports exit conductive pole 67.
Exit conductive pole 67 connects electric connection sealing flange 7, guarantees the electric insulation of binding post and heater housing on the one hand, and effect on the other hand is to make pressure-air airtight, and the electric connection under the artesian condition is air tight.Power cabinet 8 provides power supply by 7 pairs of resistance heaters 6 of electric connection sealing flange.
The utility model will be determined the external diameter of resistance heating element 65 according to the design size of honeycomb heat accumulation body 5, designs each corundum insulating part, reserves safe heat distance.
In the present embodiment, the length overall of honeycomb heat accumulation body 5 and resistance heater 6 is 6m; Resistance heating element 65 materials are 0Cr27Al7Mo2,1400 ℃ of maximum operation (service) temperatures; Alundum tube 63 length are 100mm, sapphire discs diameter 130mm; Heat storage plate diameter 490mm, thickness 3mm, sheet spacing 3mm, heat-storing material: 1Cr25Ni20Si2,1035 ℃ of the highest regenerator temperatures.Resistance heating element is in heat storage after the installation, and circle is from being 10mm in heater element cylindrical and the heat storage, and heater element can fully dispel the heat, and guarantees normal service life, the higher radiation temperature difference, heat storage quick heating and can not burning out.
The unexposed technology of the utility model belongs to general knowledge as well known to those skilled in the art.

Claims (3)

1. electric preheating HTHP heat accumulating type air heating apparatus is characterized in that: comprise pressure hull (1), slippage tube (2), thermal insulation layer (3), heat-barrier material liner (4), honeycomb heat accumulation body (5), resistance heater (6), electric connection sealing flange (7) and power cabinet (8); Resistance heater (6), honeycomb heat accumulation body (5), heat-barrier material liner (4), thermal insulation layer (3), slippage tube (2) and pressure hull (1) are installed from inside to outside successively; Resistance heater (6) is installed in the middle circular hole of honeycomb heat accumulation body (5) vertically, and length is identical with honeycomb heat accumulation body (5), and by the gap between honeycomb heat accumulation body (5) cellular board, homogeneous radiation is conducted heat; Slippage tube (2) and heat-barrier material liner (4) be thermal insulation layer (3) fixedly; Power cabinet (8) provides power supply by electric connection sealing flange (7) for resistance heater (6); The annulus that described thermal insulation layer (3) processes for refractory material is respectively high-temperature region and low-temperature space inside and outside the annulus; Heat-barrier material liner (4) outside is heat-barrier material fixedly, and inside is smooth cylindrical shell, is used for supporting honeycomb heat accumulation body (5).
2. according to the electric preheating HTHP heat accumulating type air heating apparatus of claim 1, it is characterized in that: described honeycomb heat accumulation body (5) comprises connecting bolt (51), nut (52), supporting sleeve (53) and honeycomb regenerator sheet (54); Connecting bolt (51), nut (52) and supporting sleeve (53) adopt identical materials with honeycomb regenerator sheet (54).
3. according to the electric preheating HTHP heat accumulating type air heating apparatus of claim 1 or 2, it is characterized in that: described heating element device (6) comprises fastening stud (61), termination nut (62), alundum tube (63), sapphire discs (64), resistance heating element (65), end sapphire discs (66) and exit conductive pole (67); Heater element (65) is installed in alundum tube (63), sapphire discs (64) and the end sapphire discs (66); Whole heating element device (6) uses fastening stud (61) to string together, reach the length of setting after, two ends are fastening with termination nuts (62); Alundum tube (63) is enclosed within on the fastening stud (61), and two ends are sapphire discs (64), and in the parallel fixing hole that pierces on the sapphire discs (64) of resistance heating element (65), end sapphire discs (66) is installed in a side, supports exit conductive pole (67).
CN2013200467679U 2013-01-29 2013-01-29 Electric preheating high-temperature high-pressure heat storing air heating device Expired - Lifetime CN203177465U (en)

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Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104458199A (en) * 2014-12-11 2015-03-25 中国航天空气动力技术研究院 Hypersonic wind tunnel airflow stabilizing device
CN104456947A (en) * 2014-10-17 2015-03-25 北京航天益森风洞工程技术有限公司 Heat accumulating type pure air heating system
CN106839420A (en) * 2017-03-16 2017-06-13 东方电气集团东方锅炉股份有限公司 A kind of electric-heating container for obtaining HTHP air
CN107411172A (en) * 2017-04-20 2017-12-01 深圳市泰康瑞科技有限公司 A kind of honeycomb fashion heater
CN108593303A (en) * 2018-03-08 2018-09-28 西北工业大学 A kind of pre-heating system design scheme based on storage heater
CN108759093A (en) * 2018-03-08 2018-11-06 西北工业大学 A kind of hollow brick storage heater
CN111457585A (en) * 2020-03-27 2020-07-28 中国航天空气动力技术研究院 High-temperature pure air heater
CN111974924A (en) * 2020-07-08 2020-11-24 中国航发北京航空材料研究院 Auxiliary heating method for isothermal forging die
CN112240719A (en) * 2020-10-20 2021-01-19 西安航天动力研究所 Hollow brick heat accumulator structure and heat accumulation type heater
CN112682964A (en) * 2020-12-17 2021-04-20 苏州市腾中钛设备制造有限公司 Temperature-adjustable sectional type heater
CN112710080A (en) * 2020-12-30 2021-04-27 中国航天空气动力技术研究院 Electric preheating heater suitable for wind tunnel
CN115264943A (en) * 2022-09-23 2022-11-01 中国空气动力研究与发展中心超高速空气动力研究所 Ultra-large vertical heat storage type heater for large hypersonic wind tunnel
CN115265248A (en) * 2022-09-23 2022-11-01 中国空气动力研究与发展中心超高速空气动力研究所 Internal element supporting device for ultra-large heat accumulating type heater and mounting method
CN115837292A (en) * 2023-02-28 2023-03-24 中国航空工业集团公司沈阳空气动力研究所 High-flow high-temperature heating system of hypersonic wind tunnel
CN116222951A (en) * 2023-05-09 2023-06-06 中国航空工业集团公司沈阳空气动力研究所 External heating system for high-temperature tube of tube wind tunnel

Cited By (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104456947A (en) * 2014-10-17 2015-03-25 北京航天益森风洞工程技术有限公司 Heat accumulating type pure air heating system
CN104456947B (en) * 2014-10-17 2018-02-13 北京航天益森风洞工程技术有限公司 Heat accumulating type pure air heating system
CN104458199A (en) * 2014-12-11 2015-03-25 中国航天空气动力技术研究院 Hypersonic wind tunnel airflow stabilizing device
CN106839420A (en) * 2017-03-16 2017-06-13 东方电气集团东方锅炉股份有限公司 A kind of electric-heating container for obtaining HTHP air
CN107411172A (en) * 2017-04-20 2017-12-01 深圳市泰康瑞科技有限公司 A kind of honeycomb fashion heater
CN108759093A (en) * 2018-03-08 2018-11-06 西北工业大学 A kind of hollow brick storage heater
CN108593303B (en) * 2018-03-08 2020-06-16 西北工业大学 Preheating system using method based on heat accumulating type heater
CN108593303A (en) * 2018-03-08 2018-09-28 西北工业大学 A kind of pre-heating system design scheme based on storage heater
CN111457585A (en) * 2020-03-27 2020-07-28 中国航天空气动力技术研究院 High-temperature pure air heater
CN111457585B (en) * 2020-03-27 2021-10-01 中国航天空气动力技术研究院 High-temperature pure air heater
CN111974924A (en) * 2020-07-08 2020-11-24 中国航发北京航空材料研究院 Auxiliary heating method for isothermal forging die
CN111974924B (en) * 2020-07-08 2022-09-20 中国航发北京航空材料研究院 Auxiliary heating method for isothermal forging die
CN112240719B (en) * 2020-10-20 2022-07-05 西安航天动力研究所 Hollow brick heat accumulator structure and heat accumulation type heater
CN112240719A (en) * 2020-10-20 2021-01-19 西安航天动力研究所 Hollow brick heat accumulator structure and heat accumulation type heater
CN112682964A (en) * 2020-12-17 2021-04-20 苏州市腾中钛设备制造有限公司 Temperature-adjustable sectional type heater
CN112710080A (en) * 2020-12-30 2021-04-27 中国航天空气动力技术研究院 Electric preheating heater suitable for wind tunnel
CN112710080B (en) * 2020-12-30 2022-07-05 中国航天空气动力技术研究院 Electric preheating heater suitable for wind tunnel
CN115264943A (en) * 2022-09-23 2022-11-01 中国空气动力研究与发展中心超高速空气动力研究所 Ultra-large vertical heat storage type heater for large hypersonic wind tunnel
CN115265248A (en) * 2022-09-23 2022-11-01 中国空气动力研究与发展中心超高速空气动力研究所 Internal element supporting device for ultra-large heat accumulating type heater and mounting method
CN115265248B (en) * 2022-09-23 2023-03-10 中国空气动力研究与发展中心超高速空气动力研究所 Internal element supporting device for ultra-large heat storage type heater and mounting method
CN115837292A (en) * 2023-02-28 2023-03-24 中国航空工业集团公司沈阳空气动力研究所 High-flow high-temperature heating system of hypersonic wind tunnel
CN115837292B (en) * 2023-02-28 2023-06-02 中国航空工业集团公司沈阳空气动力研究所 High-flow high-temperature heating system of hypersonic wind tunnel
CN116222951A (en) * 2023-05-09 2023-06-06 中国航空工业集团公司沈阳空气动力研究所 External heating system for high-temperature tube of tube wind tunnel
CN116222951B (en) * 2023-05-09 2023-07-04 中国航空工业集团公司沈阳空气动力研究所 External heating system for high-temperature tube of tube wind tunnel

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Assignee: BEIJING AEROSPACE YISEN WIND TUNNEL ENGINEERING TECHNOLOGY Co.,Ltd.

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Denomination of utility model: Electric preheating high-temperature high-pressure heat storing air heating device

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