CN207340219U - A kind of intermediate frequency fused salt electric heater unit based on annular tube bundle heater - Google Patents
A kind of intermediate frequency fused salt electric heater unit based on annular tube bundle heater Download PDFInfo
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- CN207340219U CN207340219U CN201720995192.3U CN201720995192U CN207340219U CN 207340219 U CN207340219 U CN 207340219U CN 201720995192 U CN201720995192 U CN 201720995192U CN 207340219 U CN207340219 U CN 207340219U
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Abstract
A kind of intermediate frequency fused salt electric heater unit based on annular tube bundle heater, belongs to fused salt storage heating technical field.Including controller, intermediate frequency power supply, induction coil, tube bank outside lock ring, annular fused salt heating tube bundle, tube bank retainer ring；Controller is connected with intermediate frequency power supply, for controlling the output current of intermediate frequency power supply to realize the adjusting of load and monitoring；Intermediate frequency power supply is power inverter, is connected with induction coil, can provide electric current of intermediate frequency for induction coil；Induction coil is around on the outside of annular fused salt heating tube bundle by certain number of turn, tube bank outside lock ring is close on the outside of annular fused salt heating tube bundle, it is fixed in tube bank retainer ring, restrain retainer ring to be located on the inside of annular fused salt heating tube bundle, be fixedly connected between tube bank outside lock ring, annular fused salt heating tube bundle, tube bank retainer ring using welding manner.The arrangement increases heat exchange efficiency；Process simply at the same time, device volume can also be effectively reduced, floor space is saved, so as to greatly save cost of investment.
Description
Technical field：
The utility model provides a kind of intermediate frequency fused salt electric heater unit of annular tube bank, to solve in fused salt accumulation of heat engineering
Electrical heating problem, belong to fused salt storage heating technical field.
Background technology：
China abandons wind and abandons that optical phenomenon is increasingly severe in recent years, causes the great waste of wind and solar energy, hinders
Regenerative resource shapes up；In the winter time since the increase haze of Coal-fired capacity seriously affects northern China, people has been influenced
The daily life of the people.The each province and city such as Beijing, Hebei, the Three Eastern Provinces give trough-electricity, coal changes electric policy, are reduced to dissolve paddy electricity
It is coal-fired.Photoelectricity or valley power heating fused salt are abandoned using wind is abandoned, and carry out heat supply (including for warm industry confession using heat storage technology
Heat), it is the important channel for solving problem above.
Fused salt electric heating equipment is the core content of above-mentioned technology.But conventional electric heater is to immerse fused salt using resistance tube
The mode heated, due to being limited by resistance heating tube, it is impossible to realize that high voltage heats.Thus need to fill for large-scale heating
Supporting more transformers are put, significantly increase cost of investment and floor space.In addition, there is the danger of electric leakage in this mode of heating
Danger.Using the contactless fused salt heating unit of inductive heating, the hidden danger of electric leakage can solve.But according to thermal conduction study meter
Calculate, the fused salt induction heating apparatus of single tube journey, since tube wall heat flow density is too big, though the fused salt under turbulence state also be difficult to by
The heat that tube wall produces is taken away, and tube wall temperature can be made to continue to raise and cause security incident.Therefore it is necessary to examined from thermal conduction study angle
Consider, current fused salt induction heating apparatus is improved.
Utility model content：
The purpose of this utility model is that a kind of intermediate frequency fused salt electric heater unit of annular tube bundle heater of design, the fused salt
Electric heater is a kind of fused salt pipeline heater based on heating in medium frequency principle, using non-contact thermal mode, therefore can be had
The protection electric heater of effect and the normal operation of equipment.At the same time using the arrangement of annular tube bank, can effectively increase
The heat exchange area of fused salt in pipe, improves the efficiency of heating surface and security of device.
In order to achieve the above object, the technical solution adopted in the utility model using intermediate frequency power supply melt in pipeline to be a kind of
The device of salt heating.As shown in Figure 1, the heating unit is outer including controller (1), intermediate frequency power supply (2), induction coil (3), tube bank
Side lock ring (4), annular fused salt heating tube bundle (5), tube bank retainer ring (6)；Controller (1) is connected with intermediate frequency power supply (2), for controlling
The output current of intermediate frequency power supply (2) processed is to realize the adjusting of load and monitoring；Intermediate frequency power supply (2) is power inverter, with sense
Answer coil (3) to be connected, can be that induction coil (3) provides electric current of intermediate frequency；Induction coil (3) is around in annular fused salt by certain number of turn and adds
On the outside of heat pipe bundle (5), tube bank outside lock ring (4) is close on the outside of annular fused salt heating tube bundle (5), is fixed in tube bank retainer ring
(6) on, tube bank retainer ring (6) is located on the inside of annular fused salt heating tube bundle (5), tube bank outside lock ring (4), annular fused salt heating tube
It is fixedly connected between beam (5), tube bank retainer ring (6) using welding manner.
Annular fused salt heating tube bundle (5) axially parallel forms loop configuration for multiple monometallic pipes, inside loop configuration
Using the fixed support of tube bank retainer ring (6), it is fixed inside loop configuration using tube bank outside lock ring (4).
Controller (1) mainly includes power, temperature monitoring and controller.Respectively to rating of set, coil temperature, stainless steel
Temperature of molten salt is monitored in pipe bundle combinations device 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
(2) electric power input is provided.
Induction coil (3) is to form coil by hollow copper line of induction coiling.Coil is around in annular fused salt heating tube bundle (5)
Outside.When being passed through electric current in induction coil, due to electromagnetic induction principle, in coiling part-toroidal fused salt heating tube bundle
(5) metal pipe-wall generates heat, and the fused-salt medium flowed in heating pipe.
Annular fused salt heating tube bundle (5) is the core of the electric heater unit, solid by tube bank using some monometallic pipelines
Determine ring (6) and turn to annular tube bank, and it is outer fixed in tube bank with tube bank outside lock ring (4).During work, fused salt is inside each tube bank
Flowing, and exchange heat with tube wall.Metallic conduit and coiling diameter are depending on the particular capacity of electric heater.Annular fused salt heating tube bundle
(5) schematic diagram is as shown in Figure 2.
Torsional band in pipe (7) is further preferably additionally provided with each monometallic inner-walls of duct, torsional band is metal in pipe
Material, the purpose is to by way of adding torsional band inside monometallic pipe, increase and perturbed in fused salt flow process, so as to carry
The heat transfer effect of high device.Torsional band is helical structure in pipe, torsional band can be a continuous whole helical structure in pipe, or is
Between there is the helical structure of the segmented for disconnecting gap, the gap of disconnection is along monometallic tube hub direction of principal axis interleaved.It is spiral
The central shaft of structure and monometallic tube hub axis are coaxial.Torsional band is banded structure in pipe, band perpendicular to monometallic pipe inner tubal wall,
Band it is highly preferred not higher than monometallic pipe radius 1/5.
Compared with existing heating technique, the utility model has following advantage：
(1) medium-frequency electrical heating technology has the advantage for starting that speed is fast, firing rate is fast, thermal power is stable, environmentally friendly.This
Technology is applied to fused salt electrical heating, can greatly save fused salt heating time.
(2) medium-frequency electrical heating technology is non-contact thermal, can be big compared with traditional electrical heating tubular type heats fused salt mode
It is big to save insulation costs, improve equipment safety performance.
(3) involved in the utility model to based on annular tube bank fused salt medium-frequency electrical heating device core be annular fused salt
Heating tube bundle (5).The structure type of the combiner compared with other induction type fused salt electric heater units, can greatly increase by
The area in hot face, solves in single tube sensing electric heater unit, fused salt can not take away tube wall high temperature and cause to burn the danger of pipe, carry
The high heat exchange efficiency of device；Utility model device processing at the same time is simple, can also effectively reduce device volume, saves and takes up an area
Area, so as to greatly save cost of investment.
(4) torsional band is set, and by hydrodynamics and thermal conduction study, which 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 excessive 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 intermediate frequency fused salt electric heater unit structure diagram of the utility model based on annular tube bundle heater.
Fig. 2 is annular fused salt heating tube bundle structure diagram.
Fig. 3 is the single tube schematic diagram with torsional band in pipe in managing, and wherein A is continuous screw twisted band, and B divides to disconnect
The screw twisted band of segmentation.
In figure：1st, controller；2nd, intermediate frequency power supply；3rd, induction coil；4th, tube bank outside lock ring；5th, annular fused salt heating tube
Beam；6th, retainer ring is restrained；7th, torsional band in pipe.
Embodiment：
The utility model is described in further detail below in conjunction with attached drawing, but the utility model is not limited to following implementation
Example.
Embodiment 1
Intermediate frequency fused salt electric heater unit structure based on annular tube bundle heater is shown in Fig. 1 schematic diagrames, annular fused salt heating tube
Binding structure is shown in Fig. 2 schematic diagrames, and the single tube for having torsional band in pipe in pipe is shown in Fig. 3 schematic diagrames.
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 fused salt heating tube bundle 5.When molten
Salt is flowed through out of fused salt heating tube bundle 5, is raised with wall heat-exchange temperature, achievees the purpose that to heat fused salt.
A kind of intermediate frequency fused salt electric heater unit based on annular tube bundle heater, the device include controller 1；Intermediate frequency power supply
2；Induction coil 3；Tube bank outside lock ring 4；Annular fused salt heating tube bundle 5；Restrain retainer ring 6.It is it is characterized in that molten using annular
Salt heating tube bundle 5 heats the fused salt flowed in tube bank as calandria.
Annular fused salt heating tube bundle 5 is as shown in Fig. 2, its architectural feature is, using some stainless steel pipes by a fixation
Diameter turns to annular tube bank.Fused salt exchanges heat in each tube bank internal flow, and with tube wall.Stainless steel pipes and coiling diameter regard electricity
Depending on the particular capacity of heater.
Lock ring 4 and tube bank retainer ring 6 on the outside of the tube bank are as shown in Fig. 2, it acts as fix annular tube bank by tube bank
Ring size fixes cyclization.
The induction coil 2 is to form coil by hollow copper line of induction coiling.Coil is around in annular fused salt heating
The outside of tube bank 3, inserts certain thickness thermal insulation material among both.Parcel insulating heat insulating material on the outside of coil.Work as induction coil
When being inside passed through electric current, due to electromagnetic induction principle, generate heat in 3 metal pipe-wall of coiling part-toroidal fused salt heating tube bundle, and
The fused-salt medium of flowing in heating pipe.
It is preferred that be additionally provided with torsional band 7 in pipe on each monometallic inner-walls of duct, torsional band is metal material in pipe, its mesh
Be inside monometallic pipe add torsional band by way of, increase fused salt flow process in perturb, so as to improve device
Heat transfer effect.Torsional band is helical structure in pipe, and torsional band can be a continuous whole helical structure in pipe, or for it is middle have it is disconnected
The helical structure of the segmented for gap of cracking, the gap of disconnection is along monometallic tube hub direction of principal axis interleaved.In helical structure
Mandrel and monometallic tube hub axis are coaxial.Torsional band is banded structure in pipe, and band is perpendicular to monometallic pipe inner tubal wall, the height of band
Preferably no greater than the 1/5 of monometallic pipe radius.
Claims (7)
1. a kind of intermediate frequency fused salt electric heater unit based on annular tube bundle heater, it is characterised in that the heating unit includes control
Device (1) processed, intermediate frequency power supply (2), induction coil (3), tube bank outside lock ring (4), annular fused salt heating tube bundle (5), tube bank are fixed
Ring (6)；Controller (1) is connected with intermediate frequency power supply (2), for controlling the output current of intermediate frequency power supply (2) to realize the tune of load
Section and monitoring；Intermediate frequency power supply (2) is power inverter, is connected with induction coil (3), can be that induction coil (3) provides intermediate frequency
Electric current；Induction coil (3) is around on the outside of annular fused salt heating tube bundle (5) by certain number of turn, and tube bank outside lock ring (4) is close to annular
On the outside of fused salt heating tube bundle (5), it is fixed in tube bank retainer ring (6), tube bank retainer ring (6) is located at annular fused salt heating tube
On the inside of beam (5), welding manner is used between tube bank outside lock ring (4), annular fused salt heating tube bundle (5), tube bank retainer ring (6)
It is fixedly connected；
Annular fused salt heating tube bundle (5) axially parallel forms loop configuration for multiple monometallic pipes, is used inside loop configuration
The fixed support of retainer ring (6) is restrained, is fixed inside loop configuration using tube bank outside lock ring (4).
2. a kind of intermediate frequency fused salt electric heater unit based on annular tube bundle heater described in accordance with the claim 1, its feature exist
In controller (1) is mainly used for the monitoring and control of power, temperature.
3. a kind of intermediate frequency fused salt electric heater unit based on annular tube bundle heater described in accordance with the claim 1, its feature exist
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)
For electric power input.
4. a kind of intermediate frequency fused salt electric heater unit based on annular tube bundle heater described in accordance with the claim 1, its feature exist
In induction coil (3) is to form coil by hollow copper line of induction coiling；Coil is around on the outside of annular fused salt heating tube bundle (5)；
When being passed through electric current in induction coil, due to electromagnetic induction principle, in coiling part-toroidal fused salt heating tube bundle (5) metal
Tube wall generates heat, and the fused-salt medium flowed in heating pipe.
5. a kind of intermediate frequency fused salt electric heater unit based on annular tube bundle heater described in accordance with the claim 1, its feature exist
In being additionally provided with torsional band in pipe (7) on each monometallic inner-walls of duct, torsional band is metal material in pipe, torsional band in pipe
For helical structure, torsional band is a continuous whole helical structure in pipe.
6. according to a kind of intermediate frequency fused salt electric heater unit based on annular tube bundle heater described in claim 5, its feature exists
In torsional band replaces with the helical structure of the middle segmented for having and disconnecting gap in pipe, and the gap of disconnection is along monometallic pipe
Mandrel direction interleaved.
7. according to a kind of intermediate frequency fused salt electric heater unit based on annular tube bundle heater described in claim 5, its feature exists
In the central shaft and monometallic tube hub axis of helical structure are coaxial；Torsional band is banded structure in pipe, and band is perpendicular to monometallic pipe
Inner tubal wall, the height of band are not higher than the 1/5 of monometallic pipe radius.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720995192.3U CN207340219U (en) | 2017-08-10 | 2017-08-10 | A kind of intermediate frequency fused salt electric heater unit based on annular tube bundle heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720995192.3U CN207340219U (en) | 2017-08-10 | 2017-08-10 | A kind of intermediate frequency fused salt electric heater unit based on annular tube bundle heater |
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| Publication Number | Publication Date |
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| CN207340219U true CN207340219U (en) | 2018-05-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201720995192.3U Active CN207340219U (en) | 2017-08-10 | 2017-08-10 | A kind of intermediate frequency fused salt electric heater unit based on annular tube bundle heater |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107333347A (en) * | 2017-08-10 | 2017-11-07 | 北京工业大学 | A kind of intermediate frequency fused salt electric heater unit based on annular tube bundle heater |
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2017
- 2017-08-10 CN CN201720995192.3U patent/CN207340219U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107333347A (en) * | 2017-08-10 | 2017-11-07 | 北京工业大学 | A kind of intermediate frequency fused salt electric heater unit based on annular tube bundle heater |
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