CN110891335A - Heat accumulating type induction heating equipment - Google Patents
Heat accumulating type induction heating equipment Download PDFInfo
- Publication number
- CN110891335A CN110891335A CN201911156822.8A CN201911156822A CN110891335A CN 110891335 A CN110891335 A CN 110891335A CN 201911156822 A CN201911156822 A CN 201911156822A CN 110891335 A CN110891335 A CN 110891335A
- Authority
- CN
- China
- Prior art keywords
- thermal
- heat
- induction heating
- induction coil
- heating apparatus
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/02—Details
- H05B3/06—Heater elements structurally combined with coupling elements or holders
- H05B3/08—Heater elements structurally combined with coupling elements or holders having electric connections specially adapted for high temperatures
Landscapes
- General Induction Heating (AREA)
Abstract
The invention relates to a heat accumulating type induction heating device, and belongs to the technical field of thermal structures and thermal assessment. The utility model provides a heat accumulation formula induction heating equipment, includes vacuum cavity, induction coil, thermal-insulated wall, heat accumulator, intermediate frequency power and cold water machine, induction coil, thermal-insulated wall and heat accumulator are located the vacuum cavity, thermal-insulated wall is hollow structure, induction coil sets up and is used for heating the heat accumulator in thermal-insulated wall periphery, the heat accumulator sets up at thermal-insulated wall periphery, intermediate frequency power and cold water machine are located outside the vacuum cavity, intermediate frequency power and cold water machine are connected with induction coil's both ends respectively and are used for controlling induction coil. The heat accumulating type induction heating equipment provided by the invention has the advantages of high heating speed, good heat preservation capability, strong heat accumulation capability and the like, and can realize the performance evaluation of semi-passive/active thermal structures.
Description
Technical Field
The invention relates to a heat accumulating type induction heating device, and belongs to the technical field of thermal structures and thermal assessment.
Background
With the emergence and development of technologies such as high-speed aircrafts, thermal energy storage and nuclear thermal power generation, the service temperature of a thermal structure is rapidly increased to reach or even exceed the upper limit of the service temperature of the existing heat-proof material system, and the research of a thermal protection technology is gradually changed from passive heat protection to semi-passive heat protection and active heat protection.
In semi-passive/active thermal protection studies, the corresponding thermal structures have high heat transfer and dissipation capabilities. The heating equipment provided in the prior art has the defects of small thermal power, poor heat storage capacity, insufficient temperature control capacity and the like, and the generated total heat hardly meets the examination requirements of a semi-passive/active thermal structure.
Disclosure of Invention
In view of the above problems in the prior art, the present invention provides a heat accumulating type induction heating apparatus. The device has the advantages of high heating speed, good heat preservation capability, strong heat storage capability and the like, and can realize the performance assessment of semi-passive/active thermal structures.
In order to achieve the above purpose, the invention provides the following technical scheme:
the utility model provides a heat accumulation formula induction heating equipment, includes vacuum cavity, induction coil, thermal-insulated wall, heat accumulator, intermediate frequency power and cold water machine, induction coil, thermal-insulated wall and heat accumulator are located the vacuum cavity, thermal-insulated wall is hollow structure, induction coil sets up and is used for heating the potential body at thermal-insulated wall periphery, the heat accumulator sets up at thermal-insulated wall periphery, intermediate frequency power and cold water machine are located outside the vacuum cavity, intermediate frequency power and cold water machine are connected with induction coil's both ends respectively and are used for controlling induction coil.
In an alternative embodiment, the induction coil is formed from a copper tube having a diameter of 10-14mm and a wall thickness of 1-1.5 mm.
In an alternative embodiment, the induction coil adopts a spiral structure, the diameter of the spiral is 500-.
In an alternative embodiment, the gap between the heat insulation wall and the induction coil is 5-10 mm.
In an alternative embodiment, the heat insulation wall is in a barrel shape, the wall thickness is 50-80mm, and the length is 450-600 mm.
In an optional embodiment, the heat insulation wall is made of porous alumina and has a density of 0.3-0.55g/cm3。
In an optional embodiment, the heat accumulator is a silicon-molybdenum rod or a silicon-carbon rod, and the silicon-molybdenum rod or the silicon-carbon rod is densely distributed on the inner surface of the heat insulation wall.
In an alternative embodiment, the silicon-molybdenum rod or silicon-carbon rod used as the heat accumulator has a diameter of 10-24mm and a length of 350-400 mm.
In an alternative embodiment, the vacuum chamber has a background vacuum level of less than 5.0 × 10-4Pa。
In an optional embodiment, the heating power of the intermediate frequency power supply is 30-55 kW.
In an optional embodiment, the pressure of the water flow generated by the water cooler is 0.4-0.8MPa, and the flow rate is 0.05-0.3m3In terms of a/minute.
Compared with the prior art, the invention has the following beneficial effects:
(1) the heat accumulating type induction heating equipment provided by the embodiment of the invention adopts the induction power supply for heating, and the temperature rising speed of the equipment is high.
(2) The heat accumulating type induction heating equipment provided by the embodiment of the invention has good structural design flexibility, and the number of heat accumulating rods in the heat accumulator, such as silicon-molybdenum rods or silicon-carbon rods, can be adjusted in real time according to specific examination requirements.
(3) The heat accumulating type induction heating equipment provided by the embodiment of the invention has good safety, and the equipment is in a power-off state in the examination, so that the occurrence of electric shock accidents is avoided, and the safety of operators is improved.
In conclusion, the heat accumulating type induction heating equipment provided by the invention has the advantages of high heating speed, good heat preservation capability, strong heat accumulation capability and the like, and can realize the performance evaluation of semi-passive/active thermal structures.
Drawings
Fig. 1 is a schematic structural view of a regenerative induction heating apparatus according to an embodiment of the present invention;
fig. 2 is a temperature-time curve diagram of a heat preservation performance test of a heat accumulating type induction heating apparatus according to an embodiment of the present invention;
fig. 3 is a diagram of a semi-passive thermal structure niobium-based high-temperature heat pipe and a distribution diagram of temperature measurement points thereof according to an embodiment of the present invention;
FIG. 4a is a graph showing the temperature response of a niobium-based high temperature heat pipe heated by a quartz lamp according to a comparative example of the present invention;
fig. 4b is a temperature response curve diagram of the niobium-based high-temperature heat pipe heated by the heat accumulating type induction heating device provided by the embodiment of the invention;
the labels in the figure are as follows: 1-an intermediate frequency power supply; 2-a water chiller; 3-an induction coil; 4-heat insulation wall; 5-a heat accumulator; 6-vacuum chamber.
Detailed Description
In order that those skilled in the art will better understand the present invention, the following detailed description will proceed with reference being made to specific examples.
Referring to fig. 1, the heat accumulating type induction heating apparatus of the present invention includes an intermediate frequency power supply 1, a water chiller 2, an induction coil 3, a heat insulation wall 4, a heat accumulator 5, and a vacuum chamber 6.
Further, the heating power of the intermediate frequency power supply 1 may be 30-70 kW.
Further, the pressure of water flow generated by the water cooler 2 is 0.4-0.8MPa, and the flow rate is 0.05-0.3m3In terms of a/minute.
Further, the induction coil 3 is preferably formed of a copper tube having a diameter of 10 to 14mm and a wall thickness of 1 to 1.5 mm.
Further, the induction coil 3 is preferably in a spiral structure, the diameter of the spiral is 500-600mm, the pitch of the spiral is 15-20mm, and the number of turns is 100-160.
Further, the heat insulation wall 4 is preferably in a barrel shape, the wall thickness is preferably 50-80mm, and the length is preferably 450-600 mm.
Further, the gap between the heat insulation wall 4 and the induction coil 3 is preferably 5-10 mm.
Furthermore, the heat insulation wall 4 is made of porous alumina, and the density of the porous alumina is 0.3-0.55g/cm3。
Further, the heat accumulator 5 is preferably a silicon-molybdenum rod or a silicon-carbon rod, and the silicon-molybdenum rod or the silicon-carbon rod is closely arranged on the inner surface of the heat insulation wall 4.
Further, the heat accumulator 5 is made of a silicon-molybdenum rod or a silicon-carbon rod, the diameter is preferably 10-24mm, and the length is preferably 350-400 mm.
Further, the vacuum chamber 6 has a background vacuum degree of less than 5.0 × 10-4Pa。
Further, the vacuum chamber 6 is made of stainless steel.
The following is a specific embodiment of the present invention, specifically illustrating the operation of the regenerative induction heating apparatus of the present invention:
firstly, the heat accumulating type induction heating equipment is built by adopting the following specific conditions:
adopting an intermediate frequency power supply with the heating power of 50kW as power 1; the pressure of the cooling water of the water flow generated by the water cooler 2 is 0.4MPa, and the flow rate is 0.2m3Per minute; the induction coil 3 adopts a copper tube with a spiral structure, the specific specification is phi 10 multiplied by 1mm, the spiral diameter is 500mm, the thread pitch is 20mm, and the number of turns is 100; the heat insulation wall 4 is in a barrel shape, the outer diameter of the heat insulation wall is 495mm, the length of the heat insulation wall is 450mm, and the wall thickness of the heat insulation wall is 75 mm; the heat insulation wall 4 is made of porous alumina and has the density of 0.5g/cm3(ii) a The heat accumulator 5 adopts a silicon-molybdenum rod with the diameter of 10mm and the length of 350 mm; the vacuum chamber 6 is a stainless steel structure with a diameter of 1m and a length of 1 m.
Then, the heat accumulating type induction heating equipment is heated, the temperature is heated to 1100 ℃, then the power is cut off, the heat preservation performance of the equipment provided by the embodiment after the power is cut off is tested, and the specific temperature-time curve is shown in detail in fig. 2. As can be seen from fig. 2, the temperature of the device provided in this example did not drop significantly over time, indicating that the device had good heat retention capability.
The following is another embodiment of the present invention, which specifically describes the examination test process of the regenerative induction heating apparatus of the present invention:
firstly, a plurality of K-type thermocouples are arranged on a semi-passive thermal structure niobium-based high-temperature heat pipe, as shown in figure 3, and then a corresponding examination test is carried out.
Respectively, the quartz lamp is used for heating the niobium-based high-temperature heat pipe, the heat accumulating type induction heating equipment is used for heating the niobium-based high-temperature heat pipe, the heat preservation performance of the heating modes of the quartz lamp and the heat accumulating type induction heating equipment is respectively tested, corresponding temperature response curves are respectively obtained, the temperature response curve of the niobium-based high-temperature heat pipe heated by the quartz lamp is shown in a figure 4a, and the temperature response curve of the niobium-based high-temperature heat pipe heated by the heat accumulating type induction heating equipment provided by the embodiment of the invention is shown in a figure 4.
As can be seen from fig. 4a, since the quartz lamp has limited heating power and no heat storage function, the generated heat is not enough to isothermalize the surface of the niobium-based high-temperature heat pipe, and the heat pipe starting process fails.
As can be seen from fig. 4b, under examination of the heat accumulating type induction heating apparatus provided in the embodiment of the present invention, the niobium-based high temperature heat pipe is successfully started, the surface is isothermal, and the working temperature thereof does not change much with the time.
Therefore, the device has better test effect than a quartz lamp on the semi-passive thermal structure examination.
It should be understood that the above description of the embodiments is illustrative only for the sake of clarity and is not intended to limit the embodiments. Any changes or substitutions that may be easily made by those skilled in the art within the technical scope of the present disclosure are intended to be included within the scope of the present disclosure.
The invention has not been described in detail in part of the common general knowledge of those skilled in the art.
Claims (11)
1. The utility model provides a heat accumulation formula induction heating equipment, its characterized in that, includes vacuum cavity, induction coil, thermal-insulated wall, heat accumulator, intermediate frequency power and cold water machine, induction coil, thermal-insulated wall and heat accumulator are located the vacuum cavity, thermal-insulated wall is hollow structure, induction coil sets up and is used for heating the heat accumulator in thermal-insulated wall periphery, the heat accumulator sets up at thermal-insulated wall periphery, intermediate frequency power and cold water machine are located outside the vacuum cavity, intermediate frequency power and cold water machine are connected with induction coil's both ends respectively and are used for controlling induction coil.
2. A regenerative induction heating apparatus as claimed in claim 1 wherein said induction coil is formed of copper tubing having a diameter of 10 to 14mm and a wall thickness of 1 to 1.5 mm.
3. A storage induction heating apparatus as claimed in claim 1 wherein said induction coil is of a spiral configuration having a spiral diameter of 500-600mm, a pitch of 15-20mm and a number of turns of 100-160.
4. A regenerative induction heating apparatus as claimed in claim 1, wherein a gap between said heat insulating wall and said induction coil is 5-10 mm.
5. A regenerative induction heating apparatus as claimed in claim 1 wherein said thermal insulation wall is in the form of a barrel having a wall thickness of 50-80mm and a length of 450-600 mm.
6. A regenerative induction heating apparatus as claimed in claim 1 wherein said thermal barrier is porous alumina having a density of 0.3 to 0.55g/cm3。
7. A regenerative induction heating apparatus as claimed in claim 1 wherein the heat accumulator is a silicon molybdenum rod or a silicon carbon rod, and the silicon molybdenum rod or the silicon carbon rod is densely distributed on the inner surface of the heat insulation wall.
8. A regenerative induction heating apparatus as claimed in claim 9 wherein the silicon molybdenum rod or silicon carbon rod used as the heat accumulator has a diameter of 10-24mm and a length of 350-400 mm.
9. A regenerative induction heating apparatus as claimed in claim 1 wherein the vacuum chamber has a background vacuum of less than 5.0 x 10-4Pa。
10. A regenerative induction heating apparatus as claimed in claim 1 wherein said medium frequency power source has a heating power of 30-55 kW.
11. A regenerative induction heating apparatus as claimed in claim 1 wherein said water chiller produces water flow at a pressure of 0.4 to 0.8MPa and a flow rate of 0.05 to 0.3m3In terms of a/minute.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911156822.8A CN110891335A (en) | 2019-11-22 | 2019-11-22 | Heat accumulating type induction heating equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911156822.8A CN110891335A (en) | 2019-11-22 | 2019-11-22 | Heat accumulating type induction heating equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110891335A true CN110891335A (en) | 2020-03-17 |
Family
ID=69748464
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911156822.8A Pending CN110891335A (en) | 2019-11-22 | 2019-11-22 | Heat accumulating type induction heating equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110891335A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87102657A (en) * | 1987-04-13 | 1988-12-07 | 冶金工业部钢铁研究总院 | Industrial frequency electric resistance induction furnace |
| CN101881555A (en) * | 2010-06-22 | 2010-11-10 | 武汉科技大学 | High-temperature atmosphere furnace with electromagnetic field |
| CN102976333A (en) * | 2012-12-13 | 2013-03-20 | 青岛隆盛晶硅科技有限公司 | Method and equipment for controlled directional solidification and purification of polycrystalline silicon through taking tailing by graphite tube |
| CN103105062A (en) * | 2011-11-10 | 2013-05-15 | 陈新华 | High frequency inductive aluminum melting furnace used for aluminum die-casting |
| CN205408202U (en) * | 2016-03-04 | 2016-07-27 | 上海皓越电炉技术有限公司 | Vacuum sintering is medium frequency induction heater for experimental furnace |
| CN109489419A (en) * | 2018-11-27 | 2019-03-19 | 湖南顶立科技有限公司 | A kind of intermediate frequency furnace |
-
2019
- 2019-11-22 CN CN201911156822.8A patent/CN110891335A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87102657A (en) * | 1987-04-13 | 1988-12-07 | 冶金工业部钢铁研究总院 | Industrial frequency electric resistance induction furnace |
| CN101881555A (en) * | 2010-06-22 | 2010-11-10 | 武汉科技大学 | High-temperature atmosphere furnace with electromagnetic field |
| CN103105062A (en) * | 2011-11-10 | 2013-05-15 | 陈新华 | High frequency inductive aluminum melting furnace used for aluminum die-casting |
| CN102976333A (en) * | 2012-12-13 | 2013-03-20 | 青岛隆盛晶硅科技有限公司 | Method and equipment for controlled directional solidification and purification of polycrystalline silicon through taking tailing by graphite tube |
| CN205408202U (en) * | 2016-03-04 | 2016-07-27 | 上海皓越电炉技术有限公司 | Vacuum sintering is medium frequency induction heater for experimental furnace |
| CN109489419A (en) * | 2018-11-27 | 2019-03-19 | 湖南顶立科技有限公司 | A kind of intermediate frequency furnace |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Wang et al. | Experimental investigation on startup and thermal performance of a high temperature special-shaped heat pipe coupling the flat plate heat pipe and cylindrical heat pipes | |
| JP6461329B2 (en) | Silicon oxide manufacturing apparatus and preparation method | |
| CN110891335A (en) | Heat accumulating type induction heating equipment | |
| CN104596249B (en) | High-temp solid electric heating energy-storage stove | |
| CN103237374B (en) | Civilian nuclear power plant pressurizer electric heater heating unit structure | |
| CN107517508A (en) | A kind of intermediate frequency fused salt electric heater unit based on concentric tubes | |
| CN102797075A (en) | Continuous graphitizing ultra-high temperature tube furnace | |
| CN204495061U (en) | High-temp solid electric heating energy-storage stove | |
| CN105786045A (en) | Externally-arranged surrounding type temperature control device and method for high-energy system | |
| KR20130053756A (en) | Exhaust gas pipe structure of engine | |
| CN114877733A (en) | Reactor heat pipe quick start-up system | |
| CN216671409U (en) | Super capacitor energy storage device for traction substation | |
| CN115988686A (en) | Maintenance-free mesh electric heater | |
| CN102350488A (en) | Online heating device for continuous casting round bloom | |
| CN203298481U (en) | Electric gas heater | |
| CN109556409B (en) | High-temperature sintering device for rapid sintering and sintering process method thereof | |
| CN208317045U (en) | The high high-frequency induction heating apparatus of heating efficiency | |
| CN203464781U (en) | Cooling tower | |
| CN218772478U (en) | Based on overlapping formula air can heating rod for heating drying equipment | |
| CN212576322U (en) | Novel heating device | |
| CN218403972U (en) | Glass bottle processing equipment | |
| CN217383916U (en) | Reactor heat pipe quick start-up system | |
| CN216910617U (en) | Electric dust remover | |
| CN207083245U (en) | A kind of intermediate frequency fused salt electric heater unit based on concentric tubes | |
| CN215264522U (en) | Temperature control system suitable for insulating material breakdown test |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200317 |
|
| RJ01 | Rejection of invention patent application after publication |