CN107517507A - A kind of intermediate frequency fused salt electric heater unit based on addition torsional band in pipe - Google Patents
A kind of intermediate frequency fused salt electric heater unit based on addition torsional band in pipe Download PDFInfo
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- CN107517507A CN107517507A CN201710679292.XA CN201710679292A CN107517507A CN 107517507 A CN107517507 A CN 107517507A CN 201710679292 A CN201710679292 A CN 201710679292A CN 107517507 A CN107517507 A CN 107517507A
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- pipe
- intermediate frequency
- fused salt
- band
- pipeline
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- 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
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/02—Induction heating
- H05B6/10—Induction heating apparatus, other than furnaces, for specific applications
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- General Induction Heating (AREA)
Abstract
A kind of intermediate frequency fused salt electric heater unit based on addition torsional band in pipe, belongs to fused salt storage heating technical field.Including torsional band in controller, intermediate frequency power supply, induction coil, pipeline heater, pipe, controller is connected with intermediate frequency power supply, intermediate frequency power supply is connected with induction coil, and induction coil screw-casing is fixed in the outer surface of pipeline heater, the inner-walls of duct of pipeline heater or provided with torsional band in pipe.Electric heater unit also avoids causing fused salt to decompose it is possible to prevente effectively from tube wall local temperature is too high and causes heating pipe damaged.Meanwhile the structure also considerably increases the heat exchange area of fused salt and tube wall, improves heat exchange efficiency.
Description
Technical field
The invention provides a kind of intermediate frequency fused salt electric heater unit of torsional band in pipe, to solve in fused salt accumulation of heat engineering
Electrical heating problem, belong to fused salt storage heating technical field.
Background technology
Using fuse salt electricity heat storage technology, the trough-electricity in evening is stored by electric heat accumulation to the building for daytime
Heating, not only can significantly cut down power network peak-valley difference, can realize cleaning heating again.In addition, by the accumulation of heat of fuse salt electricity by wind
This part " rubbish electricity " that electricity, photovoltaic generation be cannot get online stores, high for building winter heating and other industry
Warm utilizes, and the utilization ratio of regenerative resource can also be significantly increased.Using low ebb, abandon wind and abandon photoelectricity fused salt accumulation of heat skill
It is to want the key technology of key breakthrough that art, which carries out heat supply (including heating and industrial heating) fused salt electrical heating,.
Traditional intermediate frequency heater using individual layer heating tube, heating tube inwall hot-fluid may skewness, quilt
At 570 DEG C pyrolytic can occur for heating medium fused salt, if tube wall amount of localized heat can not be taken away in time, can cause part
Heat accumulation temperature is too high, causes the decomposition of fused salt, therefore addition torsional band can guide fused salt spiral in individual layer heating tube
Flowing, it is possible to prevente effectively from tube wall local temperature is too high, it is also beneficial to fused salt mixing and avoids fused salt local temperature too high and decompose.
The content of the invention：
It is an object of the invention to design in a kind of pipe plus the intermediate frequency fused salt electric heater unit of torsional band, the fused salt electrical heating
Device is a kind of fused salt pipeline heater based on heating in medium frequency principle, using non-contact thermal mode, therefore can effectively be protected
Protect the normal operation of electric heater and equipment.While using the runner mode for adding torsional band in pipe, it can effectively improve and add
The thermal efficiency.
To realize object above, the technical solution adopted by the present invention is as follows：
A kind of intermediate frequency fused salt electric heater unit based on addition torsional band in pipe, using intermediate frequency power supply melt in pipeline
The device of salt heating, the heater is including in controller (1), intermediate frequency power supply (2), induction coil (3), pipeline heater (4), pipe
Torsional band (5), as shown in figure 1, controller (1) is connected with intermediate frequency power supply (2), intermediate frequency power supply (2) is connected with induction coil (3),
Induction coil (3) screw-casing is fixed or provided with pipe in the outer surface of pipeline heater (4), the inner-walls of duct of pipeline heater (4)
Interior torsional band (5).
Pipeline heater (4) is single tube structure, and torsional band (5) in pipe is provided with each pipeline heater (4).
Controller (1) is mainly used in power, temperature monitoring and other controls.Respectively to rating of set, coil temperature, pipeline
Temperature of molten salt is monitored and regulated and controled in heater (or stainless steel tube bank combiner) temperature and tube bank.
Intermediate frequency power supply (2) is electric power frequency-changing device, and three phase worker power can be changed into single-phase mid-frequency electricity, be induction coil
(3) electric power input is provided.
Induction coil (3) is formed by hollow copper line of induction coiling.Coil is around on the outside of pipeline heater (4).Work as sense
Answer when electric current is passed through in coil, due to electromagnetic induction principle, generated heat in coiling section of tubing heater (4) metal pipe-wall,
And the fused-salt medium flowed in heating pipe.
Pipeline heater (4) is metal material, is the place that fused salt completes heating.When fused salt flows in pipeline, with
The heat exchange of high temperature tube wall can reach the purpose of heating fused salt.
Torsional band (5) is metal material in pipe, and the purpose is to the side by the addition torsional band inside pipeline heater (4)
Formula, increase and perturbed in fused salt flow process, so as to improve the heat transfer effect of device.Torsional band (5) is helical structure in pipe, in pipe
Torsional band (5) can be a continuous whole helical structure, or be the middle helical structure with the segmented for disconnecting gap, disconnection
Gap is along pipeline heater (4) central axis direction interleaved.The central shaft of helical structure and pipeline heater (4) central shaft are same
Axle.Torsional band is banded structure in pipe, and band adds perpendicular to pipeline heater (4) inner tubal wall, the highly preferred of band not higher than pipeline
The 1/5 of hot device (4) radius.
Compared with existing heating technique, the present invention has following advantage：
(1) medium-frequency electrical heating technology is applied to fused salt electrical heating, added compared with traditional electric resistor heater
The security of device.
(2) core for the intermediate frequency fused salt electric heater unit based on concentric tubes being related in the invention is in heating pipe
(4) it is internal that torsional band (5) is set.By hydrodynamics and thermal conduction study, the structure type adds with other induction type fused salts electricity
Thermal is compared, and can greatly be increased Reynolds number of the fused salt in Bottomhole pressure, be increased its exchange capability of heat, so as to effectively keep away
It is too high and cause heating pipe damaged to exempt from tube wall local temperature, also avoids causing fused salt to decompose.Meanwhile the structure also greatly increases
The heat exchange area of fused salt and tube wall, improves heat exchange efficiency.
Brief description of the drawings：
Fig. 1 is the intermediate frequency fused salt electric heater unit structural representation of torsional band in the continuous pipe of the present invention.
Fig. 2 is the intermediate frequency fused salt electric heater unit structural representation of torsional band in the pipe of segmented of the present invention.
In figure：1st, controller；2nd, intermediate frequency power supply；3rd, induction coil；4th, pipeline heater；5th, torsional band in pipe.
Embodiment：
The present invention is described in further detail below in conjunction with accompanying drawing.But the present invention is not limited to following examples.
Embodiment 1
The intermediate frequency fused salt electric heater unit structure of torsional band, is shown in Fig. 1 schematic diagrames in continuous pipe.
Three-phase main-frequency current rectification is single-phase mid-frequency electric current, and be loaded into the line of induction by intermediate frequency power supply 2 by electrical source of power
Circle 3.According to electromagnetic induction principle, it each pipeline wall generation heat can raise pipe temperature in pipeline heater 4.Work as fused salt
Flow through out of pipeline heater 4, raised with wall heat-exchange temperature, reach the purpose of heating fused salt.Controller 1 is used for control device
Power and necessary temperature protection etc..
It is a kind of that controller 1, intermediate frequency power supply are included based on the intermediate frequency fused salt electric heater unit that torsional band is added in pipe, the device
2nd, induction coil 3, pipeline heater 4, torsional band 5.The fused salt flowed in tube bank is entered by the use of pipeline heater 4 as calandria
Row heating.
In the inside permanent twist band 5 of pipeline heater 4, it can also be continuously interruption that torsional band, which can be, and increase is molten
Salt perturbing in the flow process of heating pipe 4, so as to reach the purpose for improving heat transfer effect.Torsional band is banding knot in pipe
Structure, band perpendicular to the inner tubal wall of pipeline heater 4, band it is highly preferred not higher than the radius of pipeline heater 4 1/5.
Described induction coil 3 is to form coil by hollow copper line of induction coiling.Coil is around in outside pipeline heater 4
Side, certain thickness insulation material is inserted among both.Parcel insulating heat insulating material on the outside of coil.When being passed through electricity in induction coil
During stream, due to electromagnetic induction principle, generated heat in the metal pipe-wall of coiling section of tubing heater 4, and flowed in heating pipe
Fused-salt medium.
Claims (7)
- It is 1. a kind of based on the intermediate frequency fused salt electric heater unit that torsional band is added in pipe, it is characterised in that to be entered using intermediate frequency power supply The device that fused salt heats in row pipeline, the heater include controller (1), intermediate frequency power supply (2), induction coil (3), pipeline heating Torsional band (5) in device (4), pipe, controller (1) are connected with intermediate frequency power supply (2), and intermediate frequency power supply (2) is connected with induction coil (3), Induction coil (3) screw-casing is fixed or provided with pipe in the outer surface of pipeline heater (4), the inner-walls of duct of pipeline heater (4) Interior torsional band (5).
- 2. according to a kind of intermediate frequency fused salt electric heater unit based on addition torsional band in pipe described in claim 1, its feature exists In pipeline heater (4) is single tube structure, and torsional band (5) in pipe is provided with each pipeline heater (4).
- 3. according to a kind of intermediate frequency fused salt electric heater unit based on addition torsional band in pipe described in claim 1, its feature exists In controller (1) is mainly used in power, temperature monitoring and other controls；Rating of set, coil temperature, pipeline are heated respectively Temperature of molten salt is monitored and regulated and controled in device temperature and pipe.
- 4. according to a kind of intermediate frequency fused salt electric heater unit based on addition torsional band in pipe described in claim 1, its feature exists In intermediate frequency power supply (2) is electric power frequency-changing device, and three phase worker power can be changed into single-phase mid-frequency electricity, carried for induction coil (3) Power of powering input.
- 5. according to a kind of intermediate frequency fused salt electric heater unit based on addition torsional band in pipe described in claim 1, its feature exists In induction coil (3) is formed by hollow copper line of induction coiling；Coil is around on the outside of pipeline heater (4)；Work as induction coil When being inside passed through electric current, due to electromagnetic induction principle, generated heat in coiling section of tubing heater (4) metal pipe-wall, and heat The fused-salt medium of flowing in pipeline.
- 6. according to a kind of intermediate frequency fused salt electric heater unit based on addition torsional band in pipe described in claim 1, its feature exists In torsional band (5) is metal material in pipe, and torsional band (5) is helical structure in pipe, and torsional band (5) can be one continuous whole in pipe Individual helical structure, or be the middle helical structure with the segmented for disconnecting gap, the gap of disconnection is along pipeline heater (4) Mandrel direction interleaved.
- 7. according to a kind of intermediate frequency fused salt electric heater unit based on addition torsional band in pipe described in claim 6, its feature exists In central shaft and pipeline heater (4) central axis of helical structure；Torsional band is banded structure in pipe, and band is perpendicular to pipe Channel heater (4) inner tubal wall, band it is highly preferred not higher than pipeline heater (4) radius 1/5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710679292.XA CN107517507A (en) | 2017-08-10 | 2017-08-10 | A kind of intermediate frequency fused salt electric heater unit based on addition torsional band in pipe |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710679292.XA CN107517507A (en) | 2017-08-10 | 2017-08-10 | A kind of intermediate frequency fused salt electric heater unit based on addition torsional band in pipe |
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| CN107517507A true CN107517507A (en) | 2017-12-26 |
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| CN201710679292.XA Pending CN107517507A (en) | 2017-08-10 | 2017-08-10 | A kind of intermediate frequency fused salt electric heater unit based on addition torsional band in pipe |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111385931A (en) * | 2018-12-29 | 2020-07-07 | 中国葛洲坝集团装备工业有限公司 | Fused salt heater based on electromagnetic induction |
| CN112317941A (en) * | 2020-11-26 | 2021-02-05 | 中国核动力研究设计院 | Method and system for cutting main pipeline of reactor primary loop by high-frequency electric heating |
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| CN102711300A (en) * | 2012-06-20 | 2012-10-03 | 北京绿创生态科技有限公司 | Pipe electromagnetism heating device and electromagnetism heating method |
| CN204608123U (en) * | 2015-05-22 | 2015-09-02 | 宁波高新区安立特电气科技有限公司 | Variable frequency induction aluminium smelting furnace |
| CN204987424U (en) * | 2015-07-27 | 2016-01-20 | 黄红伟 | Line -frequency induction family formula electromagnetism boiler |
| CN205155576U (en) * | 2015-10-20 | 2016-04-13 | 中国石油辽河油田油气合作开发公司 | Intermediate frequency electromagnetic heater |
| US20170038156A1 (en) * | 2015-08-05 | 2017-02-09 | Ajax Tocco Magnethermic Corporation | Induction molten salt heat transfer system |
| CN207340220U (en) * | 2017-08-10 | 2018-05-08 | 北京工业大学 | A kind of intermediate frequency fused salt electric heater unit based on addition torsional band in pipe |
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2017
- 2017-08-10 CN CN201710679292.XA patent/CN107517507A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102711300A (en) * | 2012-06-20 | 2012-10-03 | 北京绿创生态科技有限公司 | Pipe electromagnetism heating device and electromagnetism heating method |
| CN204608123U (en) * | 2015-05-22 | 2015-09-02 | 宁波高新区安立特电气科技有限公司 | Variable frequency induction aluminium smelting furnace |
| CN204987424U (en) * | 2015-07-27 | 2016-01-20 | 黄红伟 | Line -frequency induction family formula electromagnetism boiler |
| US20170038156A1 (en) * | 2015-08-05 | 2017-02-09 | Ajax Tocco Magnethermic Corporation | Induction molten salt heat transfer system |
| CN205155576U (en) * | 2015-10-20 | 2016-04-13 | 中国石油辽河油田油气合作开发公司 | Intermediate frequency electromagnetic heater |
| CN207340220U (en) * | 2017-08-10 | 2018-05-08 | 北京工业大学 | A kind of intermediate frequency fused salt electric heater unit based on addition torsional band in pipe |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111385931A (en) * | 2018-12-29 | 2020-07-07 | 中国葛洲坝集团装备工业有限公司 | Fused salt heater based on electromagnetic induction |
| CN111385931B (en) * | 2018-12-29 | 2022-06-21 | 中国葛洲坝集团装备工业有限公司 | Fused salt heater based on electromagnetic induction |
| CN112317941A (en) * | 2020-11-26 | 2021-02-05 | 中国核动力研究设计院 | Method and system for cutting main pipeline of reactor primary loop by high-frequency electric heating |
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