CN206514518U - A kind of direct-type efficient electric heater - Google Patents
A kind of direct-type efficient electric heater Download PDFInfo
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- CN206514518U CN206514518U CN201621243965.4U CN201621243965U CN206514518U CN 206514518 U CN206514518 U CN 206514518U CN 201621243965 U CN201621243965 U CN 201621243965U CN 206514518 U CN206514518 U CN 206514518U
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Abstract
The utility model discloses a kind of direct-type efficient electric heater, including outer cylinder body, the rectifying cavity of the current stabilization chamber, heating chamber and the medium outflow that are flowed into it provided with medium, fluid distributor is provided with the rectifying cavity, heating component is provided with the heating chamber, heat screen is provided between the heating chamber and outer cylinder body inwall, the outer cylinder body is provided with electrode assemblie, and the electrode assemblie is connected with the heating component；It is a kind of direct-type heater using snakelike heating component structure.Fluid media (medium) enters after pipeline, is flowed through fluid distributor after one section of current stabilization chamber flowing, then carries out direct heat transfer in heating chamber, and the medium after heat exchange flows out after one section of rectifying cavity again, travels further into next workshop section such as reactor；Medium carries out direct heat transfer by the heating component in heating chamber, and its heat exchange efficiency is up to more than 95%, and non-resistance, the pressure loss is smaller；Heating component heats technological requirement according to medium, pollution-free, less scaling, heats efficient stable.
Description
Technical field
The utility model is related to electric heater field, more particularly to a kind of direct-type efficient electric heater.
Background technology
In many industrial process, the heating of gas medium is extremely important, especially for chemical process, it is often necessary to
High temperature, high pressure, poisonous, harmful, inflammable, explosive one or more mixed gas are heated to according to technological requirement by a constant temperature
Degree, stable in order to ensure reaction is carried out and raising reaction conversion ratio, and the control to temperature is strict.Meanwhile, gas heating will also
Accomplish that electric heating element is unable to fouling in homogeneous heating, good effect of heat exchange, heating system, in case hot-spot, corrosion is even blown
Heating element heater.
The principle of heating of conventional fluid electric heater is：Medium is entered through pipeline by the entrance point of electric heater container
Enter in the electric heater container equipped with tubular electrothermal element, existing general heating tube is the spiral of common anti-corrosion pipe or bending
Pipe dish tubular construction.Medium is from during heating inside pipe wall flowing, and electrical heating wire is conductive to be heated to heating tube heat radiation, former by heat transfer
Reason is realized carries out heat exchange to the medium in heating tube, belongs to indirectly heat, efficiency using low, by current density, apparent power and
Heat transfer rate and the influence of heater volume, realize that high pressure, high temperature, big flow, high-power electric heater difficulty are larger, and without
Ji, in addition it is difficult to realize.It is traditional especially for having stronger corrosivity and being easy to the medium of fouling during heating
Electric heater is used to the direct-fired mode of spiral heat exchange tube, causes that equipment blocking and element often occur in heating process
Corrosion and damage, service life is short, increases enterprise operation cost.
Utility model content
In order to which the efficiency of heating surface for solving the presence of coil pipe indirectly heat is low, easily block and perishable, the problem of life-span is low, this reality
A kind of direct-type efficient electric heater is provided with new.
To reach above-mentioned purpose, embodiment of the present utility model is adopted the following technical scheme that：
A kind of direct-type efficient electric heater, the direct-type efficient electric heater includes outer cylinder body, and it is interior provided with medium
Current stabilization chamber, heating chamber and the rectifying cavity of medium outflow of inflow, the current stabilization intracavitary are provided with fluid distributor, the heating chamber
It is interior to be provided with heating component, heat screen is provided between the heating chamber and outer cylinder body inwall, the outer cylinder body is provided with electrode assemblie, institute
Electrode assemblie is stated with the heating component to be connected.
According to one side of the present utility model, the heating component is serpentine configuration heater.
According to one side of the present utility model, the side where the outer cylinder body current stabilization chamber is provided with inlet interface flange.
According to one side of the present utility model, the side where the outer cylinder body rectifying cavity is provided with discharge coupling flange.
According to one side of the present utility model, the outer cylinder body is provided with the thermocouple mouth of pipe, the outer cylinder body and is provided with
Some temperature-detecting devices, the temperature-detecting device passes through the external temperature control device of the thermocouple mouth of pipe.
According to one side of the present utility model, the current stabilization cavity fluid is uniformly distributed through fluid distributor.
According to one side of the present utility model, the electrode assemblie includes electrode mounting cup, terminal box and earth fault
Protection system.
According to one side of the present utility model, the heating chamber is hollow structure.
According to one side of the present utility model, the heat screen is attached by compression spring support member and outer cylinder body
It is fixed.
According to one side of the present utility model, the heating component is bar-shaped or banded structure heater.
The advantage that the utility model is implemented：Direct-type efficient electric heater described in the utility model, including outer cylinder body, its
It is interior provided with medium flow into current stabilization chamber, heating chamber and medium outflow rectifying cavity, the heating chamber be externally provided with heating component and
Fluid distributor, is provided with heat screen between the heating chamber and outer cylinder body inwall, the outer cylinder body is provided with electrode assemblie, the electricity
Pole component is connected with the heating component；It is a kind of direct-type heater using snakelike heating component structure.Fluid media (medium) enters
Enter after conduit entrance flange, flowed through fluid distributor after one section of current stabilization chamber flowing, then carried out directly in heating chamber
Heat exchange, carries out monitoring temperature, the medium after heat exchange is flowed through out after one section of rectifying cavity again by thermocouple and temperature sensor
Mouth flange face outflow, travels further into next workshop section such as reactor；Medium is directly changed by the heating component in heating chamber
Heat, its heat exchange efficiency is up to more than 95%, and non-resistance, the pressure loss is smaller；Heating component heats technological requirement, nothing according to medium
Pollution, it is less scaling, heat efficient stable.
Brief description of the drawings
In order to illustrate more clearly of the technical scheme in the utility model embodiment, it will make below to required in embodiment
Accompanying drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the present utility model,
For those of ordinary skill in the art, on the premise of not paying creative work, it can also be obtained according to these accompanying drawings
Other accompanying drawings.
Fig. 1 is a kind of structural representation of direct-type efficient electric heater described in the utility model；
Fig. 2 is a kind of heating component structural representation of direct-type efficient electric heater described in the utility model.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is carried out
Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of the utility model, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made
The every other embodiment obtained, belongs to the scope of the utility model protection.
As depicted in figs. 1 and 2, a kind of direct-type efficient electric heater, the direct-type efficient electric heater includes outer barrel
It is provided with body 1, the rectifying cavity 4 of the current stabilization chamber 2 flowed into it provided with medium, heating chamber 3 and medium outflow, the current stabilization chamber 2
Fluid is uniformly distributed through fluid distributor 12 in fluid distributor 12, the current stabilization chamber 2, and heating group is provided with the heating chamber 3
Heat screen 11 is provided between heating chamber 3 described in part 9 and the inwall of outer cylinder body 1, the outer cylinder body 1 is provided with electrode assemblie 10, the electricity
Pole component 10 is connected with the heating component 9.
Wherein, the heating component 9 can be serpentine configuration.Side where the 1 current stabilization chamber of outer cylinder body 2 connects provided with import
Mouth flange 5.Side where 1 rectifying cavity of outer cylinder body 4 is provided with discharge coupling flange 8.The outer cylinder body is provided with thermocouple
The mouth of pipe 7.Some temperature-detecting devices are provided with the outer cylinder body, the temperature-detecting device passes through the external temperature control of the thermocouple mouth of pipe
Equipment.The electrode assemblie includes electrode mounting cup, terminal box and ground-fault protection system.The heating component can also be rod
Shape or banded structure.The heating chamber is hollow structure.The heat screen 11 is entered by compression spring support member 6 with outer cylinder body 1
Row is connected.
In actual applications, can be as follows：
Outer cylinder body is pressure resistant vessel, pressing force Vessel Design, and it possesses the current stabilization chamber of medium inflow, a hollow heating
There are inlet interface flange, multiple compression spring support members, thermoelectricity on the rectifying cavity flowed out after chamber, and medium heating, outer cylinder body
The even mouth of pipe and discharge coupling flange.
In the heating chamber included in outer cylinder body, equipped with heating component, the heating component has serpentine configuration, according to electrically matching somebody with somebody
Requirement is put, general heating component is connected for three, i.e. the general three-phase for being connected respectively to power supply of heating component.The heating group
Part heats technological requirement according to medium, typically using in the heating material such as graphite, charcoal-charcoal compound, silicon molybdenum, tungsten, nichrome
It is a kind of.
Three-phase heating component is connected to the three-phase of power supply by three electrode assemblies, and there is provided the work(from power supply to heater element
Rate.Electrode assemblie generally comprises electrode mounting cup, terminal box, ground-fault protection system etc., and electrode hood is prevented in surrounding them
Personnel encounter power connection points by mistake；Terminal box is connected for sensor power with signal；Ground-fault protection system is used for detecting
Whether internal heating component touches shell body, other inner parts, or the short-circuit earth fault of power line.
Be also equipped with cylinder type heat screen in cavity between shell body and heating chamber, the main function of heat screen be every
Heat, insulation and reduction heat loss.Heat screen can use metal material, metal coating layer material, graphite material according to processing medium requirement
One kind in material.Heat screen is fixed on outer cylinder body that there is provided the inside branch of heat screen by the compression spring support member of shell body
Support, is prevented because inner member is rocked caused by media flow.
Head turbulent flow intracavitary is equipped with fluid distributor, for uniform fluid flow, more effectively exchanges heat.
Heater inlet, middle and outlet temperature are provided by thermocouple and temperature sensor to show, monitor temperature overheating
Alarm and shutdown.
In real work, operating pressure is 0.1~8MPa, and operating temperature is normal temperature~1500 DEG C, and power output is 500
~15000KW.
Three groups of snakelike heating components are connected respectively to the three-phase of power supply by three electrodes, and medium is met by power adjusting
The requirement of outlet temperature.The requirement of snakelike heating component material therefor is difficult to deform at high temperature, it is rotten the features such as.According to work temperature
Degree and gas medium property select heating material.Common material has carbon carbon composite, graphite material, nichrome etc..
The parameters such as type selecting, developed area and the perforate of heating component are by heater power, current density, apparent power, gas pressure, stream
What the parametric synthesis such as amount, temperature were determined.Electric heater power output is adjusted by power governor, passes through such a control
Heated temperature of charge is more uniform.Multiple serial or parallel connections can be used to reach technique purpose.Heater can vertically or water
Safety is filled.
In actual applications, the high power air heater of aviation field can be used in.Aero Engine Testing platform needs
High-power, big flow air heater.
In actual use, heater can typically be installed using horizontal or vertical.Design pressure is 5MPa, pressure-air from
50 DEG C are heated to 750 DEG C, and separate unit heating power is up to 15000kW.According to the present embodiment, gases at high pressure enter steady from inlet flange
Chamber is flowed, is flowed through fluid distributor after one section of Stationary flow, then direct heat transfer is carried out in heating chamber, is directly changed
Heat, carries out monitoring temperature, the medium after heat exchange flows through outlet(discharge) flange after rectifying cavity again by thermocouple and temperature sensor
Surface current goes out, for engine environmental simulated test.
In flow cavity and heating chamber that outer cylinder body is included, equipped with annular porous heating component, the heating component has snakelike
Structure, (calling snakelike heating component in the following text) requires according to electrical configurations, using the star-like connection of three-phase, and heating component is divided into three and is connected
Connect, i.e. the general three-phase for being connected respectively to power supply of heating component.Snakelike heating component point three-phase passes through three electrode assemblies
Being connected to the three-phase of power supply, there is provided the power from power supply to heater element.
The heating component heats technological requirement according to air, pollution-free, less scaling, can use carbon-carbon composites, plus
Hot efficient stable.
Be also equipped with cylinder type heat screen in cavity between shell body and heating chamber, the main function of heat screen be every
Heat, insulation and reduction heat loss.Heat screen can use high temperature resistant stainless steel or nickel-bass alloy material according to processing medium requirement, protect
Temperature is heat-insulated, protects pressure container cylinder.Heat screen by the compression spring support member of shell body be fixed on outer cylinder body there is provided every
The inside support of heat shielding, is prevented because inner member caused by mass flow air flowing is rocked.
Head current stabilization intracavitary is equipped with fluid distributor, for uniform fluid flow, can more effectively exchange heat.
Heater electrode component generally comprises electrode mounting cup, terminal box, ground-fault protection system etc., and electrode hood is in electricity
Around pole, prevent personnel from encountering power connection points by mistake；Terminal box is connected for sensor power with signal；Earth-fault protection system
System is used for detecting whether internal heating component touches shell body, other inner parts, or the short-circuit earth fault of power line.It is logical
Cross thermocouple and temperature sensor provides heater inlet, middle and outlet temperature is shown, monitoring temperature overheating is alarmed and shut down.
By the electric level of cable connection heater and power supply, the power of electric heater is adjustable, the outlet according to heater in range
Temperature, carries out the power adjusting on heater element.Control system can be configured to a controller while controlling two heaters,
To maintain required outlet temperature.Air carries out direct heat transfer directly through the cavity of heater, it is to avoid indirect by pipe
Heat exchange, the efficiency of heating surface is greatly improved.
1st, at least two are employed by outer layer barrel and interior heat screen structure, pressure-containing member pressing force Vessel Design is heat-insulated
Screen protection temperature, reduces thermal loss, can high temperature high voltage resistant.
2nd, medium direct heat transfer in heating chamber, it is not necessary to pass through coil pipe or pipe indirect heat exchange, heat exchange efficiency is high, flowing
Resistance is small, and less scaling and blocking, service life is long.
3rd, snakelike heating component uses special construction and material, and heating surface (area) (HS is big, and surface loading is high, thermal-stable.(substitute
Scheme can use rod heating component) the compound high temperature heated materials of carbon carbon are carbon fiber and its enhanced carbon-based bluk recombination of fabric
Material.It is good with low-density, high intensity, high ratio modulus, high-termal conductivity, low-expansion coefficient, frictional behaviour, and thermal-shock resistance
The advantages of energy is good, dimensional stability is high.
4th, stream design is coordinated, media flow can be uniformly distributed, high efficient heat exchanging.
5th, three-phase electric control has electrode protection cover and a terminal box, ground protection system, insulating part etc., safe.
6th, electric heater power output is adjusted by power governor, temperature of charge is heated by such a control
It is more uniform.
The advantage that the utility model is implemented：Direct-type efficient electric heater described in the utility model, including outer cylinder body, its
It is interior provided with medium flow into current stabilization chamber, heating chamber and medium outflow rectifying cavity, the heating chamber be externally provided with heating component and
Fluid distributor, is provided with heat screen between the heating chamber and outer cylinder body inwall, the outer cylinder body is provided with electrode assemblie, the electricity
Pole component is connected with the heating component；It is a kind of direct-type heater using snakelike heating component structure.Fluid media (medium) enters
Enter after conduit entrance flange, flowed through fluid distributor after one section of current stabilization chamber flowing, then carried out directly in heating chamber
Heat exchange, carries out monitoring temperature, the medium after heat exchange is flowed through out after one section of rectifying cavity again by thermocouple and temperature sensor
Mouth flange face outflow, travels further into next workshop section such as reactor；Medium is directly changed by the heating component in heating chamber
Heat, its heat exchange efficiency is up to more than 95%, and non-resistance, the pressure loss is smaller；Heating component heats technological requirement, nothing according to air
Pollution, it is less scaling, heat efficient stable.At least two are employed by outer layer barrel and interior heat screen structure, pressure-containing member is pressed
Design of pressure vessels, heat screen insulation, reduces thermal loss, can high temperature high voltage resistant；Medium direct heat transfer in heating chamber, is not required to
To pass through coil pipe or pipe indirect heat exchange, heat exchange efficiency is high, and flow resistance is small, less scaling and blocking, service life is long；It is snakelike
Heating component uses special construction and material, and heating surface (area) (HS is big, and surface loading is high, thermal-stable；Coordinate stream design, efficiently change
Heat.
It is described above, embodiment only of the present utility model, but protection domain of the present utility model do not limit to
In this, any those skilled in the art is disclosed in the utility model in technical scope, the change that can be readily occurred in
Change or replace, should all cover within protection domain of the present utility model.Therefore, protection domain of the present utility model should be with described
Scope of the claims is defined.
Claims (10)
1. a kind of direct-type efficient electric heater, it is characterised in that the direct-type efficient electric heater includes outer cylinder body, in it
The rectifying cavity of the current stabilization chamber, heating chamber and the medium outflow that are flowed into provided with medium, the current stabilization intracavitary is provided with fluid distributor, institute
State and heating component is provided with heating chamber, heat screen is provided between the heating chamber and outer cylinder body inwall, the outer cylinder body is provided with electricity
Pole component, the electrode assemblie is connected with the heating component.
2. direct-type efficient electric heater according to claim 1, it is characterised in that the heating component is serpentine configuration
Heater.
3. direct-type efficient electric heater according to claim 1, it is characterised in that where the outer cylinder body current stabilization chamber
Side is provided with inlet interface flange.
4. direct-type efficient electric heater according to claim 1, it is characterised in that where the outer cylinder body rectifying cavity
Side is provided with discharge coupling flange.
5. direct-type efficient electric heater according to claim 1, it is characterised in that the outer cylinder body is provided with thermocouple
Some temperature-detecting devices are provided with the mouth of pipe, outer cylinder body, the temperature-detecting device passes through the external temperature control device of the thermocouple mouth of pipe.
6. direct-type efficient electric heater according to claim 1, it is characterised in that the current stabilization cavity fluid is through fluid
Distributor is uniformly distributed.
7. direct-type efficient electric heater according to claim 1, it is characterised in that the electrode assemblie is pacified including electrode
Dress cover, terminal box and ground-fault protection system.
8. direct-type efficient electric heater according to claim 1, it is characterised in that the heating chamber is hollow structure.
9. the direct-type efficient electric heater according to one of claim 1 to 8, it is characterised in that the heat screen passes through
Compression spring support member is attached fixation with outer cylinder body.
10. direct-type efficient electric heater according to claim 9, it is characterised in that the heating component to be bar-shaped or
Banded structure heater.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621243965.4U CN206514518U (en) | 2016-11-16 | 2016-11-16 | A kind of direct-type efficient electric heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621243965.4U CN206514518U (en) | 2016-11-16 | 2016-11-16 | A kind of direct-type efficient electric heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206514518U true CN206514518U (en) | 2017-09-22 |
Family
ID=59861583
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621243965.4U Active CN206514518U (en) | 2016-11-16 | 2016-11-16 | A kind of direct-type efficient electric heater |
Country Status (1)
| Country | Link |
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| CN (1) | CN206514518U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108072172A (en) * | 2016-11-16 | 2018-05-25 | 上海韵申新能源科技有限公司 | A kind of direct-type efficient electric heater |
| CN110173891A (en) * | 2019-05-07 | 2019-08-27 | 上海理工大学 | The integrated cover board of heated by electrodes heating installation |
-
2016
- 2016-11-16 CN CN201621243965.4U patent/CN206514518U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108072172A (en) * | 2016-11-16 | 2018-05-25 | 上海韵申新能源科技有限公司 | A kind of direct-type efficient electric heater |
| CN108072172B (en) * | 2016-11-16 | 2024-04-16 | 上海韵申新能源科技有限公司 | Direct high-efficient electric heater |
| CN110173891A (en) * | 2019-05-07 | 2019-08-27 | 上海理工大学 | The integrated cover board of heated by electrodes heating installation |
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