CN102361521A - Electrical heated tube with high heat exchange efficiency - Google Patents
Electrical heated tube with high heat exchange efficiency Download PDFInfo
- Publication number
- CN102361521A CN102361521A CN2011103223050A CN201110322305A CN102361521A CN 102361521 A CN102361521 A CN 102361521A CN 2011103223050 A CN2011103223050 A CN 2011103223050A CN 201110322305 A CN201110322305 A CN 201110322305A CN 102361521 A CN102361521 A CN 102361521A
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- Prior art keywords
- tube
- outer tube
- heat exchange
- electrical heated
- exchange efficiency
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Abstract
The invention relates to an electrical heated tube with high heat exchange efficiency. An electrical heated wire extending axially is arranged in an outer tube. A lead-out rod extending out of the outer tube is fixed at the end of the electrical heated wire. Magnesium oxide power is filled in the outer tube. Dense pits are arranged on the outside surface of the outer tube. The pits are formed by shot blasting the outside surface of the outer tube. Because the dense pits are arranged on the outside surface of the electrical heated tube, when a movable fluid is contacted with the outside surface of the electrical heated tube, a lot of micro-turbulence can be generated; the heat exchange efficiency is increased; the surface temperature of the electrical heated tube can be effectively reduced; and the service life of the electrical heated tube is prolonged.
Description
Technical field
The present invention relates to be used for the tubular metal electric heating element of electroheat equipment, specifically a kind of electrothermal tube with high heat exchange efficiency.
Background technology
Tubular metal electric heating element (electrothermal tube) is widely used in electroheat equipment, is the core parts of electric heating equipment.Existing tubular metal electric heating element smooth surface contacts when carrying out heat exchange with flow media, and electric heating element heat exchange efficiency rate is not high, and the electric heating element surface temperature is higher, and the life-span of electric heating element can shorten comparatively speaking.
Summary of the invention
The present invention is directed to the problems referred to above, a kind of electrothermal tube with high heat exchange efficiency is provided, the long service life of this electrothermal tube.
According to technical scheme of the present invention: a kind of electrothermal tube with high heat exchange efficiency; In outer tube, be provided with axially extended heating wire; The end of said heating wire is fixed with the eduction rod that stretches out said outer tube; Be filled with magnesia powder in the said outer tube, the outer surface of said outer tube is provided with intensive pit.
Said pit is that the outer surface of said outer tube forms after bead.
Said heating wire is a toroidal.
Technique effect of the present invention is: the outer surface of electrothermal tube is provided with intensive pit; When the fluid of motion contacts with the outer surface of electrothermal tube, produce a large amount of microturbulences, increased heat exchange efficiency; Can reduce the surface temperature of electrothermal tube effectively, prolong the useful life of electrothermal tube; Pit is formed by bead, and processing is simple; The outer surface of metal outer pipe is after bead, and its mechanical and physical performance improves, and has further prolonged its useful life.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Fig. 2 is the A place enlarged drawing among Fig. 1.
Embodiment
Be further described below in conjunction with the accompanying drawing specific embodiments of the invention.
Among Fig. 1, Fig. 2, comprise electrothermal tube 1, heating wire 2, eduction rod 3, outer tube 4, magnesia powder 5, pit 6 etc.
Like Fig. 1, shown in Figure 2, the present invention is a kind of electrothermal tube with high heat exchange efficiency.This electrothermal tube 1 comprises the outer tube 4 of hollow, in outer tube 4, is provided with axially extended heating wire 2, and heating wire 2 is a toroidal.The end of heating wire 2 is fixed with the eduction rod 3 that stretches out outer tube 4, is filled with magnesia powder 5 in the outer tube 4.The present invention is provided with intensive pit 6 at the outer surface of outer tube 4, and pit 6 forms after bead for the outer surface of outer tube 4.
Operation principle of the present invention is following: outer tube 4 outer surfaces of electrothermal tube 1 are provided with intensive pit 6; Form certain surface roughness, when being applied to the fluid heating, when the fluid of motion contacts with the outer surface of electrothermal tube 1; Produce a large amount of microturbulences; Increase heat exchange efficiency, can reduce the surface temperature of electrothermal tube 1 effectively, prolonged the useful life of electrothermal tube 1; Pit 6 is formed by bead, and processing is simple; The outer surface of metal outer pipe 4 is after bead, and its mechanical and physical performance improves, and has further prolonged its useful life.
Claims (3)
1. electrothermal tube with high heat exchange efficiency; In outer tube (4), be provided with axially extended heating wire (2); The end of said heating wire (2) is fixed with the eduction rod (3) that stretches out said outer tube (4); Be filled with magnesia powder (5) in the said outer tube (4), it is characterized in that: the outer surface of said outer tube (4) is provided with intensive pit (6).
2. according to the described electrothermal tube with high heat exchange efficiency of claim 1, it is characterized in that: said pit (6) forms after bead for the outer surface of said outer tube (4).
3. according to claim 1 or 2 described electrothermal tubes with high heat exchange efficiency, it is characterized in that: said heating wire (2) is a toroidal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103223050A CN102361521A (en) | 2011-10-21 | 2011-10-21 | Electrical heated tube with high heat exchange efficiency |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103223050A CN102361521A (en) | 2011-10-21 | 2011-10-21 | Electrical heated tube with high heat exchange efficiency |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102361521A true CN102361521A (en) | 2012-02-22 |
Family
ID=45586773
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011103223050A Pending CN102361521A (en) | 2011-10-21 | 2011-10-21 | Electrical heated tube with high heat exchange efficiency |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102361521A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1116139A (en) * | 1994-06-06 | 1996-02-07 | 丹尼利机械厂联合股票公司 | Continuous-casting crystalliser with increased heat exchange and method to increase the heat exchange in a continuouscasting crystalliser |
| CN2222418Y (en) * | 1994-10-28 | 1996-03-13 | 齐鲁乙烯塑编厂股份有限公司 | U-shaped electric heating tube |
| CN202231888U (en) * | 2011-10-21 | 2012-05-23 | 无锡博睿奥克电气有限公司 | Electric heating tube with high heat exchanging efficiency |
-
2011
- 2011-10-21 CN CN2011103223050A patent/CN102361521A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1116139A (en) * | 1994-06-06 | 1996-02-07 | 丹尼利机械厂联合股票公司 | Continuous-casting crystalliser with increased heat exchange and method to increase the heat exchange in a continuouscasting crystalliser |
| CN2222418Y (en) * | 1994-10-28 | 1996-03-13 | 齐鲁乙烯塑编厂股份有限公司 | U-shaped electric heating tube |
| CN202231888U (en) * | 2011-10-21 | 2012-05-23 | 无锡博睿奥克电气有限公司 | Electric heating tube with high heat exchanging efficiency |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20120222 |