CN208369883U - A kind of two-tube compound heating tube for having both moisture-proof magnesia powder - Google Patents
A kind of two-tube compound heating tube for having both moisture-proof magnesia powder Download PDFInfo
- Publication number
- CN208369883U CN208369883U CN201820875957.4U CN201820875957U CN208369883U CN 208369883 U CN208369883 U CN 208369883U CN 201820875957 U CN201820875957 U CN 201820875957U CN 208369883 U CN208369883 U CN 208369883U
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- heating tube
- flange
- moisture
- tube
- magnesia powder
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Abstract
The utility model relates to heating tube fields, it is desirable to provide a kind of two-tube compound heating tube for having both moisture-proof magnesia powder.The heating tube, including heating tube and flange；Heating tube is the double-deck pipe body at least one U-shaped part, and each U-shaped part includes two vertical sections and the changeover portion for connecting two vertical sections, and heating inner tube layer is mild steel heating tube, and outer layer is corrosion-resistant stainless steel pipe；It is equipped with heater strip in mild steel heating tube, fills moisture-proof magnesia powder between heater strip and mild steel heating inside pipe wall；The end face of flange is equipped at least one through-hole, and heating tube vertical section is vertical with the end face of flange and end is across through-hole and affixed with flange.For the utility model product without sealing, avoiding sealing failure leads to Insulation Problems caused by the magnesia powder moisture absorption；Using laser welding, since the heat-affected zone of laser is small, avoids welding high temperature from causing moisture-proof factor failure in moisture-proof magnesia powder, realize manufacture feasibility.
Description
Technical field
The utility model relates to heating tube fields, more particularly to a kind of two-tube compound heating for having both moisture-proof magnesia powder
Pipe.
Background technique
Water heating electrothermal tube is very widely used, water heater, boilers heated electrically etc., due in water quality difference all over the world
Different degrees of damage is also produced to electrothermal tube, is primarily the etching problem of electric heating tube.Due to being produced when electric heating tube work
Motional electromotive force forms potential difference (i.e. galvano-cautery), and water mineral is more, and potential difference is bigger, corrodes also more serious.
In order to solve heating tube etching problem in electric heater, the general side for increasing erosion shield or selecting high-quality tubing
Method is improved.But using corrosion-inhibiting coating, heat transfer efficiency is on the one hand reduced, so that production technology is become complicated,
It can not high efficiency production.High-quality tubing is selected, not only increases cost, and due to excessive in process deflection.It is existing
Good stainless steel heating tube all necessary high annealing before bending, is just avoided that bending is not broken, but moisture-proof magnesia powder
Unbearable annealing high temperature, therefore limit the use of moisture-proof magnesia powder.And water heats application environment and contacts possibility with moisture
Property it is high, general sealing mode leads to the magnesia powder moisture absorption once failing, and the decline of product electrical insulation capability causes safety problem.
Utility model content
The technical problems to be solved in the utility model is to overcome deficiency in the prior art, is provided a kind of two-tube compound simultaneous
Has the heating tube of moisture-proof magnesia powder.
In order to solve the technical problem, the solution of the utility model is:
A kind of two-tube compound heating tube for having both moisture-proof magnesia powder, including heating tube and flange are provided；Heating tube is tool
There is the double-deck pipe body of at least one U-shaped part, each U-shaped part includes two vertical sections and the transition for connecting two vertical sections
Section, heating inner tube layer are mild steel heating tube, and outer layer is corrosion-resistant stainless steel pipe；It is equipped with heater strip in mild steel heating tube, adds
Moisture-proof magnesia powder is filled between heated filament and mild steel heating inside pipe wall；The end face of flange is equipped at least one through-hole, heating tube
Vertical section is vertical with the end face of flange and end passes through through-hole and affixed with flange.
As an improvement corrosion-resistant stainless steel pipe is connected with flange using laser welding mode.
As an improvement electrothermal tube is connected with flange using riveting method assistant reinforcement.
As an improvement using one of rubber ring, resin or soldering auxiliary seal at electrothermal tube and flange riveting.
As an improvement corrosion-resistant stainless steel pipe is the steel pipe after blank pipe annealing.
Compared with prior art, the beneficial effect is that:
Utility model device uses bimetallic tube, and ratio of elongation single tube electrothermal tube tubing is small in outer tube recombination process, knot
Blank pipe preannealing is closed, it is ensured that bending is not broken；Magnesia powder uses moisture-proof magnesia powder, without sealing, avoids sealing
Failure leads to Insulation Problems caused by the magnesia powder moisture absorption；It avoids welding since the heat-affected zone of laser is small using laser welding
It connects high temperature and causes moisture-proof factor failure in moisture-proof magnesia powder, realize manufacture feasibility.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is structural schematic diagram when number of openings is 2 on flange in the utility model；
Fig. 3 is structural schematic diagram when number of openings is 1 on flange in the utility model.
Wherein: 1- mild steel heating tube；2- corrosion-resistant stainless steel pipe；3- flange；The moisture-proof magnesia powder of 4-；5- rubber ring.
Specific embodiment
Embodiment below can make the technical staff of this professional skill field more fully understand the utility model, but not
The utility model is limited in any way.
A kind of two-tube compound heating tube for having both moisture-proof magnesia powder, including heating tube and flange 3.Heating tube is that U-shaped is double
Layer structure, the changeover portion including two vertical sections of two vertical sections and connection, internal layer is mild steel heating tube 1, and outer layer is corrosion resistant
Stainless steel tube 2 is lost, corrosion-resistant stainless steel pipe 2 is the steel pipe after blank pipe annealing.Heater strip, heating are equipped in mild steel heating tube 1
Moisture-proof magnesia powder 4 is filled between silk and 1 inner wall of mild steel heating tube.It is set on the end face of flange 3 there are two through-hole, heating tube two is hung down
Straight section be vertically installed in the upper surface of flange 3 and end pass through through-hole and with flange 3 by laser welding affixed, electrothermal tube and method
Orchid 3 is connected using riveting method assistant reinforcement, and 5 auxiliary seal of rubber ring is used at riveting.
Therefore, the actual range of the utility model not only includes the disclosed embodiments, further include claims it
Under be practiced or carried out all equivalent schemes of the utility model.
Claims (5)
1. a kind of two-tube compound heating tube for having both moisture-proof magnesia powder, including heating tube and flange；It is characterized in that, described add
Heat pipe is the double-deck pipe body at least one U-shaped part, and each U-shaped part includes that two vertical sections and connection two are vertical
The changeover portion of section, heating inner tube layer are mild steel heating tube, and outer layer is corrosion-resistant stainless steel pipe；It is equipped with and adds in mild steel heating tube
Heated filament fills moisture-proof magnesia powder between heater strip and mild steel heating inside pipe wall；The end face of the flange is equipped at least one
Through-hole, heating tube vertical section is vertical with the end face of flange and end passes through through-hole and affixed with flange.
2. heating tube according to claim 1, which is characterized in that the corrosion-resistant stainless steel pipe and flange use Laser Welding
The mode of connecing connects.
3. heating tube according to claim 1, which is characterized in that the heating tube and flange are added using riveting method auxiliary
Strong ties.
4. heating tube according to claim 1, which is characterized in that at the heating tube and flange riveting using rubber ring,
One of resin or soldering auxiliary seal.
5. heating tube according to claim 1, which is characterized in that the corrosion-resistant stainless steel pipe is the steel after blank pipe annealing
Pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820875957.4U CN208369883U (en) | 2018-06-07 | 2018-06-07 | A kind of two-tube compound heating tube for having both moisture-proof magnesia powder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820875957.4U CN208369883U (en) | 2018-06-07 | 2018-06-07 | A kind of two-tube compound heating tube for having both moisture-proof magnesia powder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208369883U true CN208369883U (en) | 2019-01-11 |
Family
ID=64927931
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820875957.4U Active CN208369883U (en) | 2018-06-07 | 2018-06-07 | A kind of two-tube compound heating tube for having both moisture-proof magnesia powder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208369883U (en) |
-
2018
- 2018-06-07 CN CN201820875957.4U patent/CN208369883U/en active Active
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