CN205648027U - Prevent electric heating radiant tube of short circuit - Google Patents
Prevent electric heating radiant tube of short circuit Download PDFInfo
- Publication number
- CN205648027U CN205648027U CN201620401494.9U CN201620401494U CN205648027U CN 205648027 U CN205648027 U CN 205648027U CN 201620401494 U CN201620401494 U CN 201620401494U CN 205648027 U CN205648027 U CN 205648027U
- Authority
- CN
- China
- Prior art keywords
- short circuit
- mandrel
- radiant tube
- dabber
- core
- 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.)
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- 238000005485 electric heating Methods 0.000 title abstract 3
- 230000005855 radiation Effects 0.000 claims abstract description 38
- 238000007493 shaping process Methods 0.000 claims description 7
- 238000010438 heat treatment Methods 0.000 abstract description 12
- 238000012423 maintenance Methods 0.000 abstract description 2
- 238000009413 insulation Methods 0.000 abstract 3
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000005255 carburizing Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 239000000919 ceramic Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000007669 thermal treatment Methods 0.000 description 1
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- Resistance Heating (AREA)
Abstract
The utility model discloses a prevent electric heating radiant tube of short circuit, including radiation core heating member (3), protection insulation support (2), dabber (7) and protecting sheathing (5), protection insulation support (2) sets up in dabber (7) outside, and spacing block (4) is supported to outer setting of protection insulation support (2), and radiation core heating member (3) sets up on insulating rack (4), the end portion of dabber (7) is provided with insulating piece (1), and insulating piece (1) middle part sets up the through -hole, cup joints the end of fixing in dabber (7). The utility model discloses effectual short circuit of having solved between heating member and the shell and shell scaling loss problem have reduced wasting time and energy when changing electric heating radiant tube, reduce the use cost of radiant tube simultaneously. The utility model discloses effectively improved the life of radiation core, the loss that radiates the core has significantly reduced, while is the continuity of assurance equipment operation effectively, still can reduce the intensity of labour of workman's maintenance of equipment.
Description
Technical field
This utility model relates to the electric radiant tube field that Equipment for Heating Processing uses, and relates generally to a kind of electrothermal radiation tube preventing short circuit, is particularly applicable in many type of furnaces such as push-down continuous gas carburizing production line, multipurpose furnace the electric radiant tube field being disposed vertically.
Background technology
Electrothermal radiation tube is widely applied in the Equipments for Heating Processing such as push-down continuous gas carburizing production line, multipurpose furnace as preferable calandria.The structure species of electrothermal radiation tube is more, one of which cage closed-in construction electric radiation tube core is widely used on push-down continuous gas carburizing production line, it is axially aligned calandria and multiple ceramic support sheet composition, middle mandrel and sleeve pipe are connected；Between whole tube core and outside protective case unshielded, conduction heat fast.Although the electrothermal radiation tube of this structure the most relative maturity, but have some limitations and not enough: finding during use, some equipment faults such as ammeter occurs that three-phase is uneven；Or have flare on the outer containment vessel of radial canal to scurry out.By analyzing after numerous heater blocks blown, find be mostly due to calandria stretcher strain after so that calandria encounters protection shell, and causes shorted to earth discharge, causes burning heating element heater to fuse, and severe patient can make electric radiation protection of pipe shell puncture.In the thermal treatment zone different at carburizer production line, many radial canals are vertically mounted on body of heater, and in its overall insertion radial canal shell of electrothermal radiation tube tube core.The deformation of the cage closed-in construction electrothermal radiation tube of the original structure vertical direction owing to producing after long-term heating, although have a certain distance between the calandria end shell of radial canal, but sometimes it is also difficult to avoid that the shell with radial canal contacts and causes short circuit because of deformation.
Summary of the invention
The purpose of this utility model is the defect problem overcome during the use of the electrothermal radiation tube of existing cage closed-in construction, and the electrothermal radiation tube preventing short circuit used on a kind of push-down first-class hot-treatment heating equipment of continuous gas carburizing production line is provided, it can extend the service life of electrothermal radiation tube, minimizing equipment apparatus failure incidence rate, improves the safety that heat-treatment furnace runs.
The purpose of this utility model can adopt the following technical scheme that and realize:
The described electrothermal radiation tube preventing short circuit includes radiating core calandria, protection insulated sleeve, mandrel and protection shell; protection insulated sleeve is arranged on mandrel exterior; outside protection insulated sleeve, multiple support shaping piece is set; radiation core calandria is fixed on multiple support shaping piece; the terminal part of described mandrel is provided with insulating trip; through hole is set in the middle part of insulating trip, is fixed by socket at core the tip of the axis.
Being provided with screw thread on described mandrel end, be provided with the heat-resisting bolt of fastening thereon, insulating trip is bolted to mandrel end by fastening is heat-resisting.
The heat-resisting bolt of described fastening, its thickness is 6mm-10mm.
There is between described insulating trip and electric radiation core calandria 3 end the space of 20mm-22mm, fully ensure that radiation core calandria stroke in a heated state.
This utility model is applicable to the technical scheme of the electrothermal radiation tube that the heat treatment heating furnaces such as continuous gas carburizer are disposed vertically; the electrothermal radiation tube of said structure, solves the short circuit caused with contacting between protection shell that heat-treatment furnace causes because of calandria vertical deformation；The electrothermal radiation tube preventing short circuit after improvement, connects increase by one insulating trip at its end by tube core, effectively solves the short circuit between calandria and shell and shell burning problems, decrease wasting time and energy when changing electrothermal radiation tube；Reduce the use cost of radial canal simultaneously.
This utility model can be effectively improved the service life of radiation core, greatly reduces radiation core loss.Can effectively ensure that the seriality that equipment runs simultaneously, also can reduce the labor intensity of workman's maintenance of equipment.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model
In figure: 1, insulating trip, 2, protection insulated sleeve, 3, radiation core calandria, 4, support shaping piece, 5, protection shell, 6, heat-resisting bolt, 7, mandrel.
Detailed description of the invention
Further illustrate below in conjunction with the accompanying drawings and in conjunction with the embodiments to this utility model:
As shown in Figure 1: described in prevent short circuit electrothermal radiation tube include radiate core calandria 3, protection insulated sleeve 2, mandrel 7 and protection shell 5; it is outside that protection insulated sleeve 2 is arranged on mandrel 7; support shaping piece 4 is set outside protection insulated sleeve 2; radiation core calandria 3 is arranged on support shaping piece 4; the terminal part of described mandrel is provided with insulating trip 1; through hole is set in the middle part of insulating trip, is fixed on core the tip of the axis.Being provided with screw thread on described mandrel 7 end, be provided with heat-resisting bolt 6 thereon, insulating trip 1 is fixed on mandrel 7 end by heat-resisting bolt 6.The heat-resisting bolt of described fastening, its thickness 8mm, its diameter is with axle diameter size.There is between described insulating trip and electric radiation core calandria 3 end the space of 20mm, fully ensure that radiation core calandria stroke in a heated state.The electric radiation tube core of said structure, entirety is put into protection shell 5 and is used.
Claims (4)
1. the electrothermal radiation tube preventing short circuit; including radiation core calandria (3), protection insulated sleeve (2), mandrel (7) and protection shell (5); it is outside that protection insulated sleeve (2) is arranged on mandrel (7); support shaping piece (4) is set outside protection insulated sleeve (2); radiation core calandria (3) is arranged in support shaping piece (4); it is characterized in that: the terminal part of described mandrel (7) is provided with insulating trip (1); insulating trip (1) middle part arranges through hole, is fixed by socket the end in mandrel (7).
The electrothermal radiation tube preventing short circuit the most according to claim 1, is characterized in that: be provided with screw thread on mandrel (7) end, is provided with heat-resisting bolt (6) thereon, insulating trip (1) is fixed on mandrel (7) end by heat-resisting bolt (6).
The electrothermal radiation tube preventing short circuit the most according to claim 2, is characterized in that: described heat-resisting bolt, its thickness is 6mm-10mm.
The electrothermal radiation tube preventing short circuit the most according to claim 1, is characterized in that: have the space of 20mm-22mm between described insulating trip (1) and electric radiation core calandria (3) end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620401494.9U CN205648027U (en) | 2016-05-03 | 2016-05-03 | Prevent electric heating radiant tube of short circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620401494.9U CN205648027U (en) | 2016-05-03 | 2016-05-03 | Prevent electric heating radiant tube of short circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205648027U true CN205648027U (en) | 2016-10-12 |
Family
ID=57050349
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620401494.9U Active CN205648027U (en) | 2016-05-03 | 2016-05-03 | Prevent electric heating radiant tube of short circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205648027U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109618424A (en) * | 2018-11-12 | 2019-04-12 | 东台中玻特种玻璃有限公司 | Annealing kiln electric heating hand |
| TWI821622B (en) * | 2020-02-18 | 2023-11-11 | 日商中外爐工業股份有限公司 | Electric heating device and heat treatment furnace equipped with it |
-
2016
- 2016-05-03 CN CN201620401494.9U patent/CN205648027U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109618424A (en) * | 2018-11-12 | 2019-04-12 | 东台中玻特种玻璃有限公司 | Annealing kiln electric heating hand |
| TWI821622B (en) * | 2020-02-18 | 2023-11-11 | 日商中外爐工業股份有限公司 | Electric heating device and heat treatment furnace equipped with it |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 471039 No. 96, Jianxi, Luoyang District, Henan, Jianshe Road Patentee after: Luoyang Bearing Group Co.,Ltd. Country or region after: China Address before: 471039 No. 96, Jianxi, Luoyang District, Henan, Jianshe Road Patentee before: LUOYANG LYC BEARING Co.,Ltd. Country or region before: China |
|
| CP03 | Change of name, title or address |