CN111479343A - High-efficient detachable electric heater heat source assembly with filtering capability - Google Patents
High-efficient detachable electric heater heat source assembly with filtering capability Download PDFInfo
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- CN111479343A CN111479343A CN202010483941.0A CN202010483941A CN111479343A CN 111479343 A CN111479343 A CN 111479343A CN 202010483941 A CN202010483941 A CN 202010483941A CN 111479343 A CN111479343 A CN 111479343A
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- layer
- resistance tube
- heat source
- tube
- source assembly
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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
- H05B3/00—Ohmic-resistance heating
- H05B3/40—Heating elements having the shape of rods or tubes
- H05B3/42—Heating elements having the shape of rods or tubes non-flexible
- H05B3/46—Heating elements having the shape of rods or tubes non-flexible heating conductor mounted on insulating base
Abstract
The utility model provides a high-efficient detachable electric heater heat source assembly with filtering capability, includes heat source assembly, and a plurality of heat source assembly cooperations are installed to electric heater's inside, and single heat source assembly's structure is: the pipe shell comprises a cylindrical pipe shell, two ports of the pipe shell are open, a flange plate is fixed at one end of the pipe shell, a plurality of first strip-shaped holes are formed in the pipe wall of the other end of the pipe shell in the circumferential direction at intervals, and a cone structure is installed at the end in a matched mode; resistance tube component is installed to the pipe shell fit inside, resistance tube component's mounting structure is: and a plate electrode parallel to the flange is also arranged in the tube shell, and an S-shaped resistance tube which is oppositely arranged is arranged between the flange and the plate electrode. Through the structure that adopts the module formula, during the maintenance, need not to take whole electric heating components and parts out, only need with one of them subassembly that has the damage take out can, the work load that has significantly reduced maintains quick, high-efficient, with low costs.
Description
Technical Field
The invention relates to the technical field of electric heaters, in particular to a high-efficiency detachable electric heater heat source assembly with a filtering function.
Background
The electric heater is core electric heating equipment for military industry key equipment technical research and development and performance verification. For the heating up of the flowing gaseous medium. When the heating medium passes through the heating cavity of the electric heater under the action of pressure, the fluid thermodynamic principle is adopted to uniformly carry away huge heat generated in the internal work of the electric heating element, so that the temperature of the heated medium meets the process requirement.
Its structure of electric heater among the prior art is complicated, and inside electric heating components and parts that adopt monolithic structure when equipment breaks down, need take inside whole electric heating components and parts out entirely, and the operation of wholly loosing core, the work load of maintenance is huge, and the consumption time cycle is long, and work is loaded down with trivial details, and the maintenance cost is high, and the heating effect is poor.
Disclosure of Invention
The applicant provides a high-efficient detachable electric heater heat source assembly with a filtering function, which is reasonable in structure, aiming at the defects in the prior art, so that the maintenance can be conveniently realized, only one damaged assembly needs to be taken out, the whole electric heating element is not required to be taken out, the workload is greatly reduced, and the maintenance is rapid and efficient.
The technical scheme adopted by the invention is as follows:
a high-efficiency detachable electric heater heat source component with a filtering function comprises a heat source component, a plurality of heat source components are matched and installed inside an electric heater,
the structure of a single heat source assembly is as follows: the pipe shell comprises a cylindrical pipe shell, two ports of the pipe shell are open, a flange plate is fixed at one end of the pipe shell, a plurality of first strip-shaped holes are formed in the pipe wall of the other end of the pipe shell in the circumferential direction at intervals, and a cone structure is installed at the end in a matched mode;
the resistance tube element is arranged in the tube shell in a matching way,
the mounting structure of the resistance tube element is as follows: and a plate electrode parallel to the flange is also arranged in the tube shell, and an S-shaped resistance tube which is oppositely arranged is arranged between the flange and the plate electrode.
As a further improvement of the above technical solution:
a single heat source assembly is withdrawn from the electric warmer.
The resistive tube elements inside the individual heat source assemblies are extracted from the tube housing.
And a plurality of second strip-shaped holes which are uniformly spaced are formed in the cone structure.
The structure of a single S-shaped resistance tube is as follows: the tail part of the first layer of resistance tube is connected with the second layer of resistance tube through a first adapter, the tail part of the second layer of resistance tube is connected with the third layer of resistance tube through a second adapter, the head part of the first layer of resistance tube penetrates through the flange plate, and the tail part of the third layer of resistance tube penetrates through the plate electrode; and a plurality of spaced ceramic supporting pieces are arranged on the flange plate, the first layer of resistance tube, the second layer of resistance tube and the third layer of resistance tube.
The total length of the first layer of resistance tube, the second layer of resistance tube and the third layer of resistance tube is 3 times of the length of a single resistance tube.
The ceramic support is made of silicon nitride materials or aluminum oxide ceramic materials, a metal lining is arranged inside the ceramic support, and the metal lining is matched with the resistance tube of each layer.
The wall thickness and the diameter of the first layer of resistance tube, the second layer of resistance tube and the third layer of resistance tube are sequentially increased from small to large.
The wall thickness of the first layer of resistance tube is 1.6-1.8mm, the wall thickness of the second layer of resistance tube is 1.7-1.9mm, and the wall thickness of the third layer of resistance tube is 1.8-2 mm.
The diameter of the first layer of resistance tube is 20mm, the diameter of the second layer of resistance tube is 21mm, and the diameter of the third layer of resistance tube is 22 mm.
The invention has the following beneficial effects:
the invention has compact and reasonable structure and convenient operation, sets the heat source assembly in the electric heater into an independent assembly structure by adopting the assembly type structure, does not need to draw out the whole electric heating element when needing maintenance, only needs to draw out one damaged assembly, greatly reduces the workload, and has quick and efficient maintenance and low cost.
The resistance tube is GH3030 and used as a heating heat source, the heating core is of a multi-group parallel structure, each group of heating elements can independently loose cores, a single heating assembly is light in weight, the temperature rising and reducing speed is high (under the condition of certain heating power, the temperature rising and reducing speed of an object is inversely proportional to the weight, namely the temperature rising and reducing speed is high when the weight is lighter), meanwhile, the heating component is light in weight, the maintenance difficulty can be reduced, the outlet temperature of the medium is high, in order to meet the long-term service life, the electric heating element must be capable of bearing high temperature, the material can bear 1200 ℃ high temperature in a short time, when the working temperature is less than or equal to 900 ℃ and the pressure difference between the inside and the outside of the tube is less than or equal to 30KPa (different from the conventional working condition that the resistance tube is swelled due to the fact that the high.
The invention adopts the S-shaped resistance tube, so that the length of the heating core is reduced to 1/3 of the original length, the deformation amount caused by inconsistent temperature is effectively reduced, and meanwhile, the deformation amount can be effectively released through the connection among 6 resistance tubes, thereby avoiding the stress bending deformation of the resistance tubes.
The S-shaped resistance tube structure can greatly improve the heat exchange efficiency.
The S-shaped resistance tube structure increases the heat exchange length, has the effect equivalent to that 3 devices are connected in series, and can effectively reduce the working temperature of the resistance tube and ensure the service life.
The invention adopts a double-group S-shaped resistance tube connecting structure, can fully release the temperature difference deformation of the resistance tube, and avoids the situations of bending deformation and ceramic fragmentation of the resistance tube.
When the invention is in actual use, the electrode is cooled by adopting external circulating water or heat conducting oil, and the ceramic cannot be damaged by internal cooling.
Drawings
Fig. 1 is a diagram of the application of the present invention.
Fig. 2 is a diagram (partial view) of the application of the present invention.
Fig. 3 is a schematic structural view of a single cartridge of the present invention (embodiment one).
Fig. 4 is a schematic structural view of a single cartridge of the present invention (example two).
Fig. 5 is a schematic structural diagram of a resistance tube element according to the present invention.
Wherein: 1. sealing the cover; 2. a capping connector; 3. a flange plate; 4. a heat source assembly; 5. a support plate; 6. an inner housing; 7. an outer housing; 8. a first layer of resistance tubes; 9. a second adapter; 10. a ceramic support; 11. a second layer of resistance tubes; 12. a third layer of resistance tube; 13. a first adapter; 14. an electrode plate;
401. a pipe shell; 402. a first elongated aperture; 403. a cone structure; 404. a second elongated aperture.
Detailed Description
The following describes embodiments of the present invention with reference to the drawings.
As shown in fig. 1-5, the high-efficiency detachable electric heater heat source assembly with filtering function of the present embodiment includes a heat source assembly 4, a plurality of heat source assemblies 4 are fittingly installed inside the electric heater,
the electric heater only comprises an inner shell 6, a plurality of supporting plates 5 are arranged inside the inner shell 6 at intervals, round holes penetrating through heat source assemblies 4 are formed in the supporting plates 5, each heat source assembly 4 penetrates through each supporting plate 5, a sealing cover connector 2 extends from one end of the inner shell 6, the sealing cover connector 2 is connected with a sealing cover 1 through a fastening piece, an outer shell 7 is arranged outside the inner shell 6, and communication holes are formed in the other end of the inner shell 6 and the outer shell 7 at the same time.
The structure of the single heat source assembly 4 is: the pipe shell comprises a pipe shell 401 with a cylindrical structure, two ports of the pipe shell 401 are open, a flange 3 is fixed at one end of the pipe shell 401, a plurality of first strip-shaped holes 402 are formed in the pipe wall of the other end of the pipe shell 401 in the circumferential direction at intervals, and a conical structure 403 is installed at the end in a matched mode;
the interior of the envelope 401 is fitted with a resistive tube element,
the mounting structure of the resistance tube element is as follows: an electrode plate 14 parallel to the flange 3 is further arranged inside the tube shell 401, and an S-shaped resistance tube is oppositely arranged between the flange 3 and the electrode plate 14.
The single heat source unit 4 is drawn out of the electric warmer.
The resistive tube elements inside the single heat source unit 4 are drawn out of the tube case 401.
The cone structure 403 is provided with a plurality of second elongated holes 404 which are uniformly spaced.
The structure of a single S-shaped resistance tube is as follows: the resistance tube comprises a first layer of resistance tube 8, a second layer of resistance tube 11 and a third layer of resistance tube 12 which are sequentially arranged from top to bottom, wherein the tail part of the first layer of resistance tube 8 is connected with the second layer of resistance tube 11 through a first adapter 13, the tail part of the second layer of resistance tube 11 is connected with the third layer of resistance tube 12 through a second adapter 9, the head part of the first layer of resistance tube 8 penetrates through a flange plate 3, and the tail part of the third layer of resistance tube 12 penetrates through a plate electrode 14; a plurality of ceramic supporting pieces 10 are arranged on the flange plate 3, the first layer of resistance tube 8, the second layer of resistance tube 11 and the third layer of resistance tube 12 at intervals.
The total length of the first layer of resistance tube 8, the second layer of resistance tube 11 and the third layer of resistance tube 12 is 3 times of the length of a single resistance tube.
The ceramic support 10 is made of silicon nitride material or alumina ceramic material, and has a metal lining inside, wherein the metal lining is matched with the resistance tube of each layer.
The wall thickness and the diameter of the first layer of resistance tube 8, the second layer of resistance tube 11 and the third layer of resistance tube 12 are gradually increased from small to large.
The wall thickness of the first layer of resistance tube 8 is 1.6-1.8mm, the wall thickness of the second layer of resistance tube 11 is 1.7-1.9mm, and the wall thickness of the third layer of resistance tube 12 is 1.8-2 mm.
The diameter of the first layer of resistance tube 8 is 20mm, the diameter of the second layer of resistance tube 11 is 21mm, and the diameter of the third layer of resistance tube 12 is 22 mm.
In the actual use process, when a group of heat source components 4 are damaged or have faults, the machine is only required to be stopped, the sealing cover 1 is opened, the damaged heat source components 4 are taken out for maintenance, and the machine is continuously installed after maintenance.
During maintenance, only the resistor tube element inside the tube shell 401 may be taken out for maintenance, and the resistor tube element may be continuously installed after maintenance. The troublesome operation that need demolish whole core among the effectual prior art of having avoided has significantly reduced work load, and it is convenient to maintain.
According to the design of the pipe shell 401, the first strip-shaped hole 402 is formed in the circumferential direction of the tail of the pipe shell 401, the second strip-shaped hole 404 is formed in the cone structure 403, and when the ceramic supporting piece 10 in the pipe shell 401 is damaged, broken pieces cannot flow out along with strong airflow and can fall into the pipe shell 401, so that a good filtering protection effect is achieved.
The invention adopts the principle that the diameter of a first layer of resistance tube 8 is small, the diameter of a second layer of resistance tube 11 is medium, and the diameter of a third layer of resistance tube 12 is large: the first layer of the resistance tube 8 is low in air inlet temperature, small in volume flow, small in required flow cross section, the first layer and the third layer are large, the smaller the diameter is, the larger the resistance is, the larger the heating value is, the higher the heating power is, the lower the heat exchange coefficient can be realized, the heat exchange coefficient can be improved (under the common condition, the smaller the heat transfer distance is, the higher the heat exchange coefficient is), the equipment cost can be reduced, the space is saved, and the equipment volume is reduced. The method is not limited to changing the diameter, and can also realize high-back low power by changing the resistivity of the material, wherein the resistivity of the first layer is high, and the resistivity of the third layer in the second layer is low.
The invention can also add a radiant tube (not shown in the figure) between two S-shaped resistance tubes, one end of the radiant tube (not shown in the figure) is connected with the flange 3, the other end is suspended at the inner side of the electrode plate 14, the design of the radiant tube (not shown in the figure) has high temperature resistance and high radiation receiving rate, and is used for supplementing a flow channel when equipment needs a larger flow cross section, the tube is not connected with a power supply, and the radiant tube is heated by the circular distributed electrified resistance tubes, thereby achieving the effects of increasing the heat transfer area and the flow channel and reducing the temperature of a heating combined element.
The highest gas flow speed in each resistance tube is controlled to be less than or equal to 35 m/s.
The pressure drop in the tube is controlled to be less than or equal to 30KPa, and the resistance tube can be swelled due to larger internal pressure at high temperature.
The supporting span of the resistance tube is reduced, and the non-supporting span between the adjacent supporting plates 5 is less than or equal to 350mm
The reasonable-design gap size of the ceramic support 10 is used for reducing the thermal shock resistance of ceramic and resisting the flow impact force of the resistance tube on the ceramic, silicon nitride ceramic is used as support ceramic, the ceramic is lined with a protective structure of a metal sleeve, a metal liner tube is integrally molded, and gaps exist between the metal liner tube and the resistance tube and between the metal liner tube and the silicon nitride ceramic.
The above description is intended to be illustrative and not restrictive, and the scope of the invention is defined by the appended claims, which may be modified in any manner within the scope of the invention.
Claims (10)
1. The utility model provides a high-efficient detachable electric heater heat source module with filtering capability which characterized in that: comprises a heat source component (4), a plurality of heat source components (4) are matched and installed in the electric warmer,
the structure of the single heat source component (4) is as follows: the pipe shell comprises a pipe shell (401) with a cylindrical structure, two ports of the pipe shell (401) are open, a flange plate (3) is fixed at one end of the pipe shell (401), a plurality of first strip-shaped holes (402) are formed in the pipe wall of the other end of the pipe shell (401) in the circumferential direction at intervals, and a cone structure (403) is installed at the end in a matched mode;
the resistance tube element is arranged in the tube shell (401) in a matching way,
the mounting structure of the resistance tube element is as follows: an electrode plate (14) parallel to the flange plate (3) is further arranged inside the tube shell (401), and an S-shaped resistance tube which is oppositely arranged is installed between the flange plate (3) and the electrode plate (14).
2. A high efficiency removable electric warmer heat source assembly with filtration capability as defined in claim 1, wherein: a single heat source assembly (4) is withdrawn from the electric warmer.
3. A high efficiency removable electric warmer heat source assembly with filtration capability as defined in claim 1, wherein: the resistive tube elements inside the individual heat source modules (4) are extracted from the tube housing (401).
4. A high efficiency removable electric warmer heat source assembly with filtration capability as defined in claim 1, wherein: the cone structure (403) is provided with a plurality of second elongated holes (404) which are uniformly spaced.
5. A high efficiency removable electric warmer heat source assembly with filtration capability as defined in claim 1, wherein: the structure of a single S-shaped resistance tube is as follows: the device comprises a first layer of resistance tube (8), a second layer of resistance tube (11) and a third layer of resistance tube (12) which are sequentially arranged from top to bottom, wherein the tail part of the first layer of resistance tube (8) is connected with the second layer of resistance tube (11) through a first adapter (13), the tail part of the second layer of resistance tube (11) is connected with the third layer of resistance tube (12) through a second adapter (9), the head part of the first layer of resistance tube (8) penetrates through a flange plate (3), and the tail part of the third layer of resistance tube (12) penetrates through a plate electrode (14); a plurality of spaced ceramic supporting pieces (10) are arranged on the flange plate (3), the first layer of resistance tube (8), the second layer of resistance tube (11) and the third layer of resistance tube (12).
6. A high efficiency removable electric warmer heat source assembly with filtration capability as defined in claim 5, wherein: the total length of the first layer of resistance tube (8), the second layer of resistance tube (11) and the third layer of resistance tube (12) is 3 times of the length of a single resistance tube.
7. A high efficiency removable electric warmer heat source assembly with filtration capability as defined in claim 5, wherein: the ceramic support piece (10) is made of silicon nitride materials or aluminum oxide ceramic materials, a metal lining is arranged inside the ceramic support piece, and the metal lining is matched with the resistance tube of each layer.
8. A high efficiency removable electric warmer heat source assembly with filtration capability as defined in claim 5, wherein: the wall thickness and the diameter of the first layer of resistance tube (8), the second layer of resistance tube (11) and the third layer of resistance tube (12) are gradually increased from small to large.
9. A high efficiency removable electric warmer heat source assembly with filtration capability as defined in claim 5, wherein: the wall thickness of the first layer of resistance tube (8) is 1.6-1.8mm, the wall thickness of the second layer of resistance tube (11) is 1.7-1.9mm, and the wall thickness of the third layer of resistance tube (12) is 1.8-2 mm.
10. A high efficiency removable electric warmer heat source assembly with filtration capability as defined in claim 5, wherein: the diameter of the first layer of resistance tube (8) is 20mm, the diameter of the second layer of resistance tube (11) is 21mm, and the diameter of the third layer of resistance tube (12) is 22 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010483941.0A CN111479343A (en) | 2020-06-01 | 2020-06-01 | High-efficient detachable electric heater heat source assembly with filtering capability |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010483941.0A CN111479343A (en) | 2020-06-01 | 2020-06-01 | High-efficient detachable electric heater heat source assembly with filtering capability |
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| Publication Number | Publication Date |
|---|---|
| CN111479343A true CN111479343A (en) | 2020-07-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010483941.0A Pending CN111479343A (en) | 2020-06-01 | 2020-06-01 | High-efficient detachable electric heater heat source assembly with filtering capability |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112728757A (en) * | 2020-12-28 | 2021-04-30 | 无锡恒业电热电器有限公司 | High-efficient multichannel electric heater |
-
2020
- 2020-06-01 CN CN202010483941.0A patent/CN111479343A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112728757A (en) * | 2020-12-28 | 2021-04-30 | 无锡恒业电热电器有限公司 | High-efficient multichannel electric heater |
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