CN206879125U

CN206879125U - Magnesium oxide insulated heating tube

Info

Publication number: CN206879125U
Application number: CN201720489574.9U
Authority: CN
Inventors: 瞿进
Original assignee: Changshu Blackstone Electrothermal Science And Technology Co Ltd
Current assignee: Changshu Blackstone Electrothermal Science And Technology Co Ltd
Priority date: 2017-05-04
Filing date: 2017-05-04
Publication date: 2018-01-12
Anticipated expiration: 2027-05-04

Abstract

A kind of magnesium oxide insulated heating tube, belongs to electric heater technical field.Including an inner tube and an outer tube, inner tube is located in outer tube, and an outer tube closure is respectively fixed with the both ends of outer tube, and the both ends of inner tube respectively lean out outer tube closure；One first magnesium oxide layer, one second magnesium oxide layer and a heating wire, the first magnesium oxide layer between inner tube and outer tube are coated on the outer wall of inner tube, and heating wire is arranged on outside the first magnesium oxide layer, and the second magnesium oxide layer is wrapped in outside heating wire.Due to having set gradually the first magnesium oxide layer, heating wire and the second magnesium oxide layer between the outer wall of inner tube and the inwall of outer tube; thus by the first magnesium oxide layer rapidly by the heat transfer that heating wire is sent, to inner tube, the heated medium for flowing through its interior tube chamber will quickly be heated by inner tube and be improved firing rate while protection heating wire；Because overall structure is relatively simple, thus both can conveniently it make, and can is conveniently installed and used.

Description

Magnesium oxide insulated heating tube

Technical field

The utility model belongs to electric heater technical field, and in particular to a kind of magnesium oxide insulated heating tube.

Background technology

The technical information on magnesium oxide insulated heater can be seen in disclosed Chinese patent literature, such as CN104378856A（Metal magnesia far-infrared radiation heater）、CN2631182Y（Magnesium oxide insulated heating element）With CN102905409A（Magnesium oxide insulated heating collar）, but the technical information on magnesium oxide insulated heating tube is not seen in, due to oxygen Changing magnesium electrical resistance heaters has the fast high temperature resistant of heat transfer rate（Up to more than 760 DEG C）And power density is high（15w/cm²）Etc. strong point, Thus there is positive effect for designing the magnesium oxide insulated heating element of tubulose, technical scheme described below is It is caused under this background.

The content of the invention

Heating of the task of the present utility model in the heated medium flowed through in a kind of be favorably improved to inner tube is provided Speed, be advantageous to use the service life for ensureing heating wire and be beneficial to simplify structure quick transmit of heat that heating wire is sent And use convenient make and installation and the magnesium oxide insulated heating tube used.

What task of the present utility model was performed by, a kind of magnesium oxide insulated heating tube, including outside an inner tube and one Pipe, inner tube is located in outer tube, and an outer tube closure is respectively fixed with the both ends of outer tube, and it is close that the both ends of inner tube respectively lean out outer tube Capping；One first magnesium oxide layer, one second magnesium oxide layer and a heating wire between inner tube and outer tube, the first magnesium oxide layer It is coated on the outer wall of inner tube, heating wire is arranged on outside the first magnesium oxide layer, and the second magnesium oxide layer is wrapped in outside heating wire.

In a specific embodiment of the present utility model, the end structure of the outer tube closure is leant out in said inner tube Into there is installation screw thread.

In another specific embodiment of the present utility model, spirally state is arranged on described to described heating wire Outside one magnesium oxide layer.

In another specific embodiment of the present utility model, the first described magnesium oxide layer and the second magnesium oxide layer are Magnesia powder.

In another specific embodiment of the present utility model, a spacer is provided with outside described outer tube, the spacer Inwall and outer tube outer wall between space be configured to spacer chamber, and received a spacer chamber in the left end of spacer and be heated Medium introduces interface, and the right-hand member in spacer has received spacer chamber heated medium extraction interface, and the spacer chamber, which is heated, to be situated between Matter introduces interface and spacer chamber heated medium is drawn interface and communicated with described spacer chamber.

It is of the present utility model also have a specific embodiment in, described spacer chamber heated medium introduce interface with And described spacer chamber heated medium draws interface and forms the position relationship diagonally set each other.

Technical scheme provided by the utility model between the outer wall of inner tube and the inwall of outer tube due to having set gradually One magnesium oxide layer, heating wire and the second magnesium oxide layer, thus the heat that will rapidly be sent by the first magnesium oxide layer by heating wire Pass to inner tube, by inner tube to flow through its interior tube chamber heated medium quickly heating and be improved firing rate while Protect heating wire；Because overall structure is relatively simple, thus both can conveniently it make, and can is conveniently installed and used.

Brief description of the drawings

Fig. 1 is first embodiment structure chart of the present utility model.

Fig. 2 is Fig. 1 cross-sectional view.

Fig. 3 is second embodiment structure chart of the present utility model.

Embodiment

Embodiment 1：

Fig. 1 and Fig. 2 are referred to, shows an inner tube 1 and an outer tube 2, inner tube 1 is located in outer tube 2, and in outer tube 2 Both ends are respectively fixed with an outer tube closure 21, and the both ends of inner tube 1 respectively lean out outer tube closure 21；Show positioned at inner tube 1 with it is outer One first magnesium oxide layer 3, one second magnesium oxide layer 4 and a heating wire 5 between pipe 2, the first magnesium oxide layer 3 are coated on inner tube 1 Outer wall on, heating wire 5 is arranged on outside the first magnesium oxide layer 3, and the second magnesium oxide layer 4 is wrapped in outside heating wire 5.

As shown in Figure 1, the end composition for leaning out foregoing outer tube closure 21 in foregoing inner tube 1 has installation screw thread 11；It is foregoing Heating wire 5 spirally state is arranged on outside foregoing first magnesium oxide layer 3, specifically heating wire 5 positioned at first, second oxidation Between magnesium layer 3,4.

In the present embodiment, the first foregoing magnesium oxide layer 3 and the second magnesium oxide layer 4 are magnesia powder.

According to professional general knowledge, the both ends end of heating wire 5, which is drawn, to be preset in the heating wire fairlead on outer tube 2, so as to It is electrically connected with external power source circuit.When in use, heated medium flows through the interior tube chamber of inner tube 1, by "on" position Heating wire 5 generates heat, and by the first magnesium oxide layer 3 by the heat transfer that heating wire 5 is sent to inner tube 1, by inner tube 1 to flowing through in it It is intraluminal to be added medium such as water or oil etc. to heat.

Embodiment 2：

Fig. 3 is referred to, is provided with a spacer 6 outside outer tube 2 as shown in the Fig. 3, the inwall of the spacer 6 is outer with outer tube 2 Space between wall is configured to spacer chamber 61, and has received spacer chamber heated medium introducing interface in the left end of spacer 6 62, and the right-hand member in spacer 6 has received spacer chamber heated medium extraction interface 63, the spacer chamber heated medium is introduced and connect Mouth 62 and spacer chamber heated medium extraction interface 63 are communicated with foregoing spacer chamber 61 and both form diagonally each other The position relationship of setting.

When in use, heated medium such as water or oil etc. introduces interface 62 from spacer chamber heated medium and introduces spacer chamber 61, draw interface 63 from spacer chamber heated medium after heated and draw.It follows that the present embodiment can be embodied to inner tube 1 Interior tube chamber and the function of being heated simultaneously to spacer chamber 61.

Claims

1. a kind of magnesium oxide insulated heating tube, it is characterised in that including an inner tube (1) and an outer tube (2), inner tube (1) is located at outer tube (2) in, and an outer tube closure (21) is respectively fixed with the both ends of outer tube (2), the both ends of inner tube (1) respectively lean out the outer seal of tube Cover (21)；One first magnesium oxide layer (3), one second magnesium oxide layer (4) and an electric heating between inner tube (1) and outer tube (2) Silk (5), the first magnesium oxide layer (3) are coated on the outer wall of inner tube (1), and heating wire (5) is arranged on the first magnesium oxide layer (3) outside, Second magnesium oxide layer (4) is wrapped in heating wire (5) outside.

2. magnesium oxide insulated heating tube according to claim 1, it is characterised in that lean out the outer tube in said inner tube (1) The end of closure (21), which is formed, installation screw thread (11).

3. magnesium oxide insulated heating tube according to claim 1, it is characterised in that described heating wire (5) spirally state It is arranged on first magnesium oxide layer (3) outside.

4. magnesium oxide insulated heating tube according to claim 1, it is characterised in that described the first magnesium oxide layer (3) and Magnesium dioxide layer (4) is magnesia powder.

5. magnesium oxide insulated heating tube according to claim 1, it is characterised in that be provided with one outside described outer tube (2) Spacer (6), the space between the inwall of the spacer (6) and the outer wall of outer tube (2) are configured to spacer chamber (61), and in spacer (6) left end has received a spacer chamber heated medium and has introduced interface (62), and the right-hand member in spacer (6) has received a spacer chamber Heated medium draws interface (63), and the spacer chamber heated medium introduces interface (62) and spacer chamber heated medium is drawn Interface (63) communicates with described spacer chamber (61).

6. magnesium oxide insulated heating tube according to claim 5, it is characterised in that described spacer chamber heated medium draws Incoming interface (62) and described spacer chamber heated medium draw interface (63) and form the position relationship diagonally set each other.