CN104812110A - Moistureproof insulating electric heater and manufacturing method thereof - Google Patents
Moistureproof insulating electric heater and manufacturing method thereof Download PDFInfo
- Publication number
- CN104812110A CN104812110A CN201510230426.0A CN201510230426A CN104812110A CN 104812110 A CN104812110 A CN 104812110A CN 201510230426 A CN201510230426 A CN 201510230426A CN 104812110 A CN104812110 A CN 104812110A
- Authority
- CN
- China
- Prior art keywords
- terminal box
- electric heater
- transition terminal
- electrothermal tube
- transition
- 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.)
- Pending
Links
Abstract
The invention relates to the technical field of industrial power heating, in particular to a moistureproof insulating electric heater suitable for a moist or marine environment and a manufacturing method of the moistureproof insulating electric heater. The moistureproof insulating electric heater comprises an electric heating tube, an electric heating wire is arranged in the electric heating tube, the electric wire is connected with guide pins extending from a tube orifice which is provided with a connecting flange, a transition terminal box is arranged on the connecting flange, a transition terminal box body is hermitically connected with the connecting flange, the electric tube orifice is positioned in the transition terminal box, electrodes are arranged on the transition terminal box and connected with the guide pins via transition leads, an air vent is formed in the transition terminal box, and a first sealing plug is arranged in the air vent. The moistureproof insulating electric heater has the advantages that by the hermetically arranged transition terminal box, magnesium oxide in the electric tube is isolated from external air thoroughly, and by means of baking the electric heater in a manufacturing process, air left in the magnesium oxide can be eliminated, so that insulating property of the electric heater is further improved.
Description
Technical field
The present invention relates to industrial electric heating technical field, be especially suitable for damp proof insulation electric heater and the manufacture method thereof of dampness or maritime environment occasion.
Background technology
The most frequently used in existing industrial electric heating device is electrothermal tube structure form, the insulating material used in electrothermal tube is generally magnesia powder, magnesium oxide is a kind of insulating properties and the extraordinary material of thermal conductivity, but its maximum shortcoming is easy moisture absorption, moisture absorption approach has two kinds, and one sucks moisture from electrothermal tube extraneous air; Another kind be heater in heating process, air heat in electrothermal tube in magnesium oxide gap expands, and progressively assembles to the mouth of pipe, and the moisture simultaneously in these air is also assembled to the mouth of pipe; The decline that both of these case all can cause heating tube to insulate; Traditional mode adopts organic sealings such as silicone oil, silica gel or epoxy at the mouth of pipe of electrothermal tube, but expanding with heat and contract with cold due to these encapsulants, organic material easily ftractures, and cannot avoid magnesia powder moisture absorption from extraneous air; On the other hand due to the temperature limiting of organic material, be generally no more than 200 degree of application scenarios, otherwise high temperature makes organic material easily tie carbon, carbon is again conductive materials, can cause again the decline of insulating.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of damp proof insulation electric heater, improves the damp proof insulation performance of electric heating tube.
In order to solve the problems of the technologies described above, the present invention includes electrothermal tube, heating wire is provided with in electrothermal tube, described heating wire is connected with the rod that draws stretching out the mouth of pipe, the described electrothermal tube mouth of pipe is provided with adpting flange, described adpting flange is provided with transition terminal box, described transition terminal box body and adpting flange are tightly connected, the described electrothermal tube mouth of pipe is positioned at transition terminal box, described transition terminal box is provided with electrode, described electrode by transition lead wire with draw rod be connected, described transition terminal box is also provided with exhaust outlet, in described exhaust outlet, is provided with the first sealing plug.
Further, described transition terminal box is also provided with import and export of nitrogen, in described nitrogen inlet, is provided with the second sealing plug, in described transition terminal box, be filled with nitrogen.
The present invention also provides a kind of manufacture method of damp proof insulation electric heater, comprises the following steps:
A, processing electric heater, comprise electrothermal tube, heating wire is provided with in electrothermal tube, described heating wire is connected with the rod that draws stretching out the mouth of pipe, the described electrothermal tube mouth of pipe is provided with adpting flange, described adpting flange is provided with transition terminal box, described transition terminal box body and adpting flange are tightly connected, the described electrothermal tube mouth of pipe is positioned at transition terminal box, described transition terminal box is provided with electrode, described electrode by transition lead wire with draw rod be connected, described transition terminal box is also provided with exhaust outlet and nitrogen inlet, the first sealing plug is provided with in described exhaust outlet, the second sealing plug is provided with in described nitrogen inlet.
B, extract the first sealing plug and the second sealing plug, electric heater is inserted in more than 300 DEG C baking ovens and toast more than 24 hours, from nitrogen inlet, in transition terminal box, be filled with nitrogen simultaneously, after the insulation resistance of electric heater reaches requirement, shutoff is carried out to electric heater exhaust outlet and nitrogen inlet.
The present invention is by arranging the transition terminal box of sealing, magnesium oxide in electrothermal tube and extraneous air are thoroughly completely cut off, in the fabrication process by the baking to electric heater, eliminate the air remained in magnesium oxide, further increase the insulation property of electric heater.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Embodiment
Embodiment cited by the present invention; just understand the present invention for helping; should not be construed as limiting the scope of the present invention; for those skilled in the art; without departing from the inventive concept of the premise; can also improve the present invention and modify, these improve and modification also falls in the scope of the claims in the present invention protection.
As shown in Figure 1, the present invention includes electrothermal tube 1, electrothermal tube 1 li is provided with heating wire 2, and described heating wire 2 is connected with the rod 3 that draws stretching out the mouth of pipe.Due to the sealing problem of the mouth of pipe, traditional electric heater damp proof insulation performance is not good.
For this reason, the present invention arranges an adpting flange 9 at electrothermal tube 1 mouth of pipe, and this adpting flange 9 is tabular, and described electrothermal tube 1 through the plate body of this adpting flange, and is tightly connected between electrothermal tube 1 tube wall and adpting flange.Described adpting flange 9 is provided with transition terminal box 4, and described transition terminal box 4 box body and adpting flange 9 are tightly connected by welding manner, and described electrothermal tube 1 mouth of pipe is positioned at transition terminal box 4.Described transition terminal box 4 is provided with electrode 5, as embodiments of the invention, the EG electrode of the U.S. conax that this electrode adopts, the former electrical connection being mainly used in the occasion such as vacuum furnace, transformer of this electrode, this electrode maximum operating voltage reaches 2000V, most high-temperature resistant: 871 degree; Maximum current reaches 400A; Maximum pressurized: 551bar.Described electrode 5 one end is positioned at transition terminal box 4, and by transition lead wire 6 with draw rod and 3 to be connected, the other end of described electrode 5 is positioned at outside transition terminal box 4, and is positioned at electrode connection box 10.In order to ensure the sealing of transition terminal box 4, between described electrode 5 and transition terminal box 4, be provided with sealing device, or be processed into an overall structure.
Described transition terminal box 4 is also provided with exhaust outlet 7, in described exhaust outlet 7, is provided with the first sealing plug.In order to be conducive to the discharge of wet gas, transition terminal box 4 is also provided with nitrogen inlet, is provided with the second sealing plug in described nitrogen inlet 8, allows nitrogen take away wet gas on the one hand, prevents the oxidation of metalwork on the other hand.
The present invention also provides a kind of manufacture method of damp proof insulation electric heater, comprises the following steps:
A, processing electric heater, comprise electrothermal tube 1, electrothermal tube 1 li is provided with heating wire 2, described heating wire 2 is connected with the rod 3 that draws stretching out the mouth of pipe, described electrothermal tube 1 mouth of pipe is provided with adpting flange 9, described adpting flange 9 is provided with transition terminal box 4, described transition terminal box 4 box body and adpting flange 9 are tightly connected, described electrothermal tube 1 mouth of pipe is positioned at transition terminal box 4, described transition terminal box 4 is provided with electrode 5, described electrode 5 by transition lead wire 6 with draw rod and 3 to be connected, described transition terminal box 4 is also provided with exhaust outlet 7 and nitrogen inlet 8, the first sealing plug is provided with in described exhaust outlet 7, the second sealing plug is provided with in described nitrogen inlet 8.
B, extracts the first sealing plug and the second sealing plug, is inserted by electric heater in more than 300 DEG C baking ovens and toasts more than 24 hours, simultaneously from nitrogen inlet
7middlely in transition terminal box, be filled with nitrogen, after the insulation resistance of electric heater reaches requirement, shutoff carried out to electric heater exhaust outlet 7 and nitrogen inlet 8.
Because the mouth of pipe of electrothermal tube (1) is positioned at transition connecting box 4, and transition connecting box 4 and adpting flange 9, adpting flange 9 and electrothermal tube 1 body are all tightly connected, and transition connecting box 4 defines a hermetically-sealed construction, therefore, outside air can not enter in electrothermal tube 1.Electrothermal tube 1 is in the fabrication process by the baking to electric heater simultaneously, eliminates the air remained in magnesium oxide, further increases the insulation property of electric heater.
Claims (3)
1. damp proof insulation electric heater, comprise electrothermal tube (1), electrothermal tube (1) is inner is provided with heating wire (2), described heating wire (2) is connected with the rod (3) that draws stretching out the mouth of pipe, it is characterized in that, described electrothermal tube (1) mouth of pipe is provided with adpting flange (9), described adpting flange (9) is provided with transition terminal box (4), described transition terminal box (4) box body and adpting flange (9) are tightly connected, described electrothermal tube (1) mouth of pipe is positioned at transition terminal box (4), described transition terminal box (4) is provided with electrode (5), described electrode (5) one end by transition lead wire (6) with draw rod (3) and be connected, described transition terminal box (4) is also provided with exhaust outlet (7), described exhaust outlet is provided with the first sealing plug in (7).
2. the damp proof insulation electric heater according to claim, is characterized in that, described transition terminal box is also provided with import and export of nitrogen (8), is provided with the second sealing plug in described nitrogen inlet, is filled with nitrogen in described transition terminal box (4).
3. the manufacture method of damp proof insulation electric heater described in claim 2, is characterized in that, comprise the following steps:
A, processing electric heater, comprise electrothermal tube (1), electrothermal tube (1) is inner is provided with heating wire (2), described heating wire (2) is connected with the rod (3) that draws stretching out the mouth of pipe, it is characterized in that, described electrothermal tube (1) mouth of pipe is provided with adpting flange (9), described adpting flange (9) is provided with transition terminal box (4), described transition terminal box (4) box body and adpting flange (9) are tightly connected, described electrothermal tube (1) mouth of pipe is positioned at transition terminal box (4), described transition terminal box (4) is provided with electrode (5), described electrode (5) by transition lead wire (6) with draw rod (3) and be connected, described transition terminal box (4) is also provided with exhaust outlet (7) and nitrogen inlet (8), described exhaust outlet is provided with the first sealing plug in (7), described nitrogen inlet is provided with the second sealing plug in (8),
b, extract the first sealing plug and the second sealing plug, electric heater is inserted in more than 300 DEG C baking ovens and toast more than 24 hours, from nitrogen inlet (1), in transition terminal box, be filled with nitrogen simultaneously, after the insulation resistance of electric heater reaches requirement, shutoff is carried out to electric heater exhaust outlet (7) and nitrogen inlet (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510230426.0A CN104812110A (en) | 2015-05-07 | 2015-05-07 | Moistureproof insulating electric heater and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510230426.0A CN104812110A (en) | 2015-05-07 | 2015-05-07 | Moistureproof insulating electric heater and manufacturing method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104812110A true CN104812110A (en) | 2015-07-29 |
Family
ID=53696448
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510230426.0A Pending CN104812110A (en) | 2015-05-07 | 2015-05-07 | Moistureproof insulating electric heater and manufacturing method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104812110A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105163409A (en) * | 2015-10-21 | 2015-12-16 | 江苏源之翼电气有限公司 | Double-glazing electrothermal plated film electrothermal tube |
| CN105375180A (en) * | 2015-12-09 | 2016-03-02 | 浦北县金洋电厨具有限公司 | Power supply connecting device for preventing burning out |
| CN111567140A (en) * | 2018-10-30 | 2020-08-21 | 姜洪求 | Air heater |
| CN113939050A (en) * | 2021-10-13 | 2022-01-14 | 美迪斯智能装备有限公司 | Dehumidification method for electric heating tube |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102427621A (en) * | 2011-09-19 | 2012-04-25 | 朱建忠 | Immersive electrical heating pipe for melting and insulating aluminum/zinc metal |
| CN203553469U (en) * | 2013-10-08 | 2014-04-16 | 镇江市清安电器有限公司 | Explosion-proof wiring device of electric heater used for preparation of isobutene |
| CN204634069U (en) * | 2015-05-07 | 2015-09-09 | 华能无锡电热器材有限公司 | Damp proof insulation electric heater |
-
2015
- 2015-05-07 CN CN201510230426.0A patent/CN104812110A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102427621A (en) * | 2011-09-19 | 2012-04-25 | 朱建忠 | Immersive electrical heating pipe for melting and insulating aluminum/zinc metal |
| CN203553469U (en) * | 2013-10-08 | 2014-04-16 | 镇江市清安电器有限公司 | Explosion-proof wiring device of electric heater used for preparation of isobutene |
| CN204634069U (en) * | 2015-05-07 | 2015-09-09 | 华能无锡电热器材有限公司 | Damp proof insulation electric heater |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105163409A (en) * | 2015-10-21 | 2015-12-16 | 江苏源之翼电气有限公司 | Double-glazing electrothermal plated film electrothermal tube |
| CN105375180A (en) * | 2015-12-09 | 2016-03-02 | 浦北县金洋电厨具有限公司 | Power supply connecting device for preventing burning out |
| CN111567140A (en) * | 2018-10-30 | 2020-08-21 | 姜洪求 | Air heater |
| CN111567140B (en) * | 2018-10-30 | 2022-05-27 | 姜洪求 | Air heater |
| CN113939050A (en) * | 2021-10-13 | 2022-01-14 | 美迪斯智能装备有限公司 | Dehumidification method for electric heating tube |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104812110A (en) | Moistureproof insulating electric heater and manufacturing method thereof | |
| CN207897167U (en) | A kind of industrial resistance furnace electricity consumption heating radiation pipe | |
| CN203675347U (en) | Electric heater | |
| CN201146614Y (en) | PTC electric heater | |
| CN202979319U (en) | Seal structure capable of improving the electrical properties of electric heating tube | |
| CN204634069U (en) | Damp proof insulation electric heater | |
| CN205645666U (en) | Novel embedded pole vacuum circuit breaker | |
| CN203277796U (en) | Hermetically sealed connector | |
| CN104241910B (en) | Wiring terminal for carbon fiber cable | |
| CN204333507U (en) | A kind of composite silicone rubber isolated bus terminals | |
| CN206864667U (en) | A kind of encapsulating structure of automobile air conditioner compressor binding post | |
| CN204064487U (en) | A kind of thermopair of applicable calciner application | |
| CN204391030U (en) | A kind of earthenware fuse | |
| CN209184830U (en) | High voltage appearance heating element ferrule structure | |
| CN206905258U (en) | Boundling short-circuit type electric heater | |
| CN208241911U (en) | A kind of sheathed heater cold end structure | |
| CN204795639U (en) | Energy -conserving explosion -proof electric heater | |
| CN202738144U (en) | Anti-leakage type radiation electrothermal tube | |
| WO2015184755A1 (en) | Multi-functional protection connector for tube end of electric heating tube and sealing method for tube end of electric heating tube | |
| KR20100002236U (en) | Sheath heater with teflon sealing | |
| CN204231682U (en) | The faradic PTC heater of a kind of elimination | |
| CN203554713U (en) | Sleeve pipe structure of electrothermal film outer spray pipe | |
| CN204144463U (en) | A kind of binding post and the compressor be made up of it | |
| CN203933991U (en) | A kind of High-Power PTC thermostatic electric heating tube that is applied to heating liquid | |
| CN204242723U (en) | A kind of high-frequency isolation transformer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| EXSB | Decision made by sipo to initiate substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150729 |