CN108990190B - Triangle magnesium pipe - Google Patents
Triangle magnesium pipe Download PDFInfo
- Publication number
- CN108990190B CN108990190B CN201810952909.5A CN201810952909A CN108990190B CN 108990190 B CN108990190 B CN 108990190B CN 201810952909 A CN201810952909 A CN 201810952909A CN 108990190 B CN108990190 B CN 108990190B
- Authority
- CN
- China
- Prior art keywords
- magnesium
- main body
- tube
- electric heating
- triangular
- 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.)
- Active
Links
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 title claims abstract description 91
- 229910052749 magnesium Inorganic materials 0.000 title claims abstract description 75
- 239000011777 magnesium Substances 0.000 title claims abstract description 75
- 238000005485 electric heating Methods 0.000 claims abstract description 29
- 239000000463 material Substances 0.000 claims abstract description 8
- 239000000843 powder Substances 0.000 claims abstract description 8
- 239000002994 raw material Substances 0.000 claims abstract description 6
- 239000013535 sea water Substances 0.000 claims abstract description 6
- 238000005245 sintering Methods 0.000 claims abstract description 6
- 238000005192 partition Methods 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 abstract description 11
- 229910052751 metal Inorganic materials 0.000 abstract description 9
- 239000002184 metal Substances 0.000 abstract description 9
- 230000008093 supporting effect Effects 0.000 abstract description 4
- 238000009413 insulation Methods 0.000 abstract description 2
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 4
- 239000000395 magnesium oxide Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/40—Heating elements having the shape of rods or tubes
- H05B3/42—Heating elements having the shape of rods or tubes non-flexible
- H05B3/44—Heating elements having the shape of rods or tubes non-flexible heating conductor arranged within rods or tubes of insulating material
Landscapes
- Resistance Heating (AREA)
Abstract
The triangular magnesium tube is characterized in that a magnesium tube main body with a regular triangle cross section is formed by compressing, forming and sintering dry powder materials extracted from seawater magnesium raw materials, and a hollow inner cavity is matched with the shape and the size of a spiral resistance wire of an electric heating tube; the middle sections of the three hypotenuses are outwards arc-shaped bulges, and the bulge parts are provided with feed grooves; the electric heating tube is sleeved between the electric heating tube and the resistance wire, can provide fixed support for the resistance wire, prevents the resistance wire from contacting with the metal tube shell due to vibration or other factors, and has good supporting effect; the feeding groove is convenient for magnesium powder to enter the hollow inner cavity of the magnesium tube main body, the shrinkage ratio of the electric heating tube filled by the regular triangular prism-shaped magnesium tube main body combined with the magnesium powder can reach 15% -20%, the parameter control after shrinkage is accurate, the electric heating tube can adapt to the insulation structure requirement of high-temperature heating, and the electric heating tube is particularly suitable for the electric heating tube in a high-voltage explosion-proof heater with power supply voltage of 6600V and total power of 1000 KW.
Description
Technical Field
The invention relates to a triangular magnesium tube which is suitable for an electric heating tube of a high-voltage explosion-proof heater, in particular to a U-shaped electric heating tube of the high-voltage explosion-proof heater with power supply voltage of 6600V and total power of 1000 KW.
Background
The electric heating tube of the electric heater is generally formed by filling crystalline magnesia powder between the resistance wire and the metal tube after the spiral resistance wire is arranged in the metal tube, and the magnesia powder forms an insulating structure between the heating wire and the tube wall and has an excellent heat conduction function; however, magnesium powder also has strong hygroscopicity, and moisture-proof treatment is needed when the magnesium powder is used; after the magnesium powder is filled in the metal tube, the tube diameter is also required to be compressed, and the density of the magnesium powder filling material in the heating rod is increased, so that the density of the filling material in the heating tube reaches about 3.5g/cm < 3 >, and the purposes of not reducing the insulation resistance and improving the heat conductivity coefficient are achieved; the parameters of the heating pipe after shrinkage are changed, the resistance value of the spiral resistance wire in the heating pipe is also changed, the shrinkage ratio of the traditional heating pipe after filling magnesium powder is lower and can only reach 8% -14%, the parameter change condition after shrinkage cannot be accurately controlled, and the heating pipe is particularly used for an electric heating pipe in a high-voltage explosion-proof heater with power supply voltage of 6600V and total power of 1000KW, the requirement on an insulating layer between the resistance wire and a metal pipe is higher, and the magnesium powder insulating structure of the traditional heating pipe cannot adapt to the use requirement of the electric heating pipe of the high-voltage explosion-proof heater.
Disclosure of Invention
The invention aims to solve the technical problem of providing the triangular magnesium tube which can improve the shrinkage ratio of the electric heating tube, is convenient to operate by filling magnesium powder, and can meet the use requirement of the electric heating tube of the high-voltage explosion-proof heater with power supply voltage of 6600V and total power of 1000 KW.
The triangular magnesium tube of the invention is characterized in that: the electric heating tube comprises a magnesium tube main body with a regular triangle section, wherein a cylindrical hollow cavity which is communicated with the inside of the magnesium tube main body is arranged in the magnesium tube main body, and the hollow cavity of the magnesium tube main body is matched with the shape and the size of a spiral resistance wire of the electric heating tube; the middle section of the partition wall part between the hollow inner cavity of the magnesium pipe main body and the three hypotenuses of the regular triangle is outwards protruded, the outer surface of the protruded part is in a circular arc shape concentric with the hollow inner cavity, and the protruded part of one hypotenuse is provided with a feeding groove which is formed by axially recessing from the magnesium pipe end and can be used for feeding magnesium powder into the hollow inner cavity of the magnesium pipe main body;
The chord length of the arc-shaped convex part is 1/3 of the length of the hypotenuse of the regular triangle;
The sections of the magnesium pipe main body are positioned at three vertex angle positions of the regular triangle, and chamfer planes parallel to the corresponding bottom surfaces are arranged on the sections of the magnesium pipe main body;
The thinnest part of the wall thickness between the hollow cavity of the magnesium tube main body and the three hypotenuses of the regular triangle is not less than 3mm;
The length of the magnesium pipe main body is 30-100 mm, the width of the feeding chute is 4-5 mm, and the depth is 2-3 mm;
the length of the magnesium pipe main body is 50mm, the width of the feeding chute is 4.5mm, and the depth is 2.5mm;
the magnesium pipe main body is a regular triangular prism formed by compressing, forming and sintering a dry powder material extracted from a seawater magnesium raw material.
The triangular magnesium tube disclosed by the invention has the advantages that the triangular prism-shaped magnesium tube main body formed by compressing, forming and sintering the dry powder material extracted from the seawater magnesium raw material has excellent moisture resistance, high temperature resistance and insulating property, and the triangular prism-shaped magnesium tube main body is sleeved between the electric heating tube and the resistance wire to provide fixed support for the resistance wire, so that the resistance wire is prevented from contacting with a metal tube shell due to vibration or other factors, and the supporting effect is good; the shrinkage ratio of the regular triangular prism-shaped magnesium pipe main body combined with the magnesium powder filled electric heating pipe can reach 15% -20%, the parameter control after shrinkage is accurate, the insulating structure requirement of high-temperature heating can be met, and the electric heating pipe is particularly suitable for electric heating pipes in high-voltage explosion-proof heaters with power supply voltage of 6600V and total power of 1000 KW.
Drawings
FIG. 1 is a schematic view of a planar structure of a triangular magnesium tube according to an embodiment of the present invention;
FIG. 2 is a mechanical view of FIG. 1;
Fig. 3 is a bottom view of fig. 1.
Detailed Description
As shown in the figure, the triangular magnesium tube comprises a magnesium tube main body 1 with a regular triangle cross section, wherein a cylindrical hollow cavity 2 which is communicated with the inside of the magnesium tube main body 1 is arranged in the magnesium tube main body, and the hollow cavity 2 of the magnesium tube main body is matched with the shape and the size of a spiral resistance wire of an electric heating tube; the magnesium tube main body is sleeved between the electric heating tube and the resistance wire, so that a fixed support can be provided for the resistance wire, the resistance wire is prevented from being contacted with the metal tube shell due to vibration or other factors, and the support effect is good; the middle section of the partition wall part between the hollow inner cavity of the magnesium tube main body and the three hypotenuses of the regular triangle is outwards protruded 4, and the outer surface of the protruded part is in a circular arc shape concentric with the hollow inner cavity so as to adapt to the circular hollow inner cavity in the middle part of the triangular section, increase the thickness of the partition wall part between the circular hollow inner cavity and the three hypotenuses of the regular triangle, ensure the supporting strength and prevent wall breaking; the protruding part of one bevel edge is provided with a feeding groove 5 which is formed by axially sinking the magnesium pipe end and can be used for feeding magnesium powder into the hollow cavity of the magnesium pipe main body, so that the magnesium powder can conveniently enter the hollow cavity of the magnesium pipe main body, and the magnesium powder is uniformly filled.
The main body of the magnesium tube is a regular triangular prism which is formed by compressing, forming and sintering a dry powder material extracted from a seawater magnesium raw material, and has excellent moisture resistance, high temperature resistance and insulating property.
The chord length of the arc-shaped convex part is 1/3 of the length of the hypotenuse of the regular triangle, so that the strength can be ensured, and meanwhile, the occupied space is small.
The section of the magnesium tube main body 1 is positioned at three vertex angle positions of the regular triangle, and is provided with a chamfer plane 3 parallel to the corresponding bottom surface, and the inner surface of the metal shell can not be scratched due to no sharp angle when the magnesium tube main body is sleeved between the electric heating tube and the resistance wire, and meanwhile, the magnesium tube main body can not be touched and damaged due to no stress concentration.
The thinnest part of the wall thickness between the hollow cavity of the magnesium tube main body and the three hypotenuses of the regular triangle is not less than 3mm, and the support strength is reliable.
The length of the magnesium tube main body is 30-100 mm, the width of the feed chute is 4-5 mm, and the depth is 2-3 mm, so that the magnesium tube is convenient to produce and manufacture.
The length of the magnesium pipe main body in the embodiment is 50mm, the width of the feed chute is 4.5mm, the depth is 2.5mm, and the shrinkage ratio reaches 15% -20%.
The triangular magnesium tube disclosed by the invention has the advantages that the triangular prism-shaped magnesium tube main body formed by compressing, forming and sintering the dry powder material extracted from the seawater magnesium raw material has excellent moisture resistance, high temperature resistance and insulating property, and the triangular prism-shaped magnesium tube main body is sleeved between the electric heating tube and the resistance wire to provide fixed support for the resistance wire, so that the resistance wire is prevented from contacting with a metal tube shell due to vibration or other factors, and the supporting effect is good; the shrinkage ratio of the regular triangular prism-shaped magnesium pipe main body combined with the magnesium powder filled electric heating pipe can reach 15% -20%, the parameter control after shrinkage is accurate, the insulating structure requirement of high-temperature heating can be met, and the electric heating pipe is particularly suitable for electric heating pipes in high-voltage explosion-proof heaters with power supply voltage of 6600V and total power of 1000 KW.
Claims (7)
1. A triangle-shaped magnesium pipe, its characterized in that: the electric heating tube comprises a magnesium tube main body with a regular triangle section, wherein a cylindrical hollow cavity which is communicated with the inside of the magnesium tube main body is arranged in the magnesium tube main body, and the hollow cavity of the magnesium tube main body is matched with the shape and the size of a spiral resistance wire of the electric heating tube; the middle section of the partition wall between the hollow inner cavity of the magnesium pipe main body and the three hypotenuses of the regular triangle is outwards protruded, the outer surface of the protruded part is in a circular arc shape concentric with the hollow inner cavity, and the protruded part of one hypotenuse is provided with a feeding groove which is formed by axially recessing from the magnesium pipe end and can be used for feeding magnesium powder into the hollow inner cavity of the magnesium pipe main body.
2. The triangular magnesium tube of claim 1, wherein: the chord length of the arc-shaped convex part is 1/3 of the length of the hypotenuse of the regular triangle.
3. The triangular magnesium tube of claim 1, wherein: the sections of the magnesium pipe main body are positioned at three vertex angle positions of the regular triangle, and chamfer planes parallel to the corresponding bottom surfaces are arranged on the sections of the magnesium pipe main body.
4. The triangular magnesium tube of claim 1, wherein: the thinnest part of the wall thickness between the hollow cavity of the magnesium tube main body and the three hypotenuses of the regular triangle is not less than 3mm.
5. The triangular magnesium tube of claim 1, wherein: the length of the magnesium pipe main body is 30-100 mm, the width of the feeding chute is 4-5 mm, and the depth is 2-3 mm.
6. The triangular magnesium tube of claim 1, wherein: the length of the magnesium pipe main body is 50mm, the width of the feeding groove is 4.5mm, and the depth is 2.5mm.
7. The triangular magnesium tube of claim 1, wherein: the magnesium pipe main body is a regular triangular prism formed by compressing, forming and sintering a dry powder material extracted from a seawater magnesium raw material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810952909.5A CN108990190B (en) | 2018-08-21 | 2018-08-21 | Triangle magnesium pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810952909.5A CN108990190B (en) | 2018-08-21 | 2018-08-21 | Triangle magnesium pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108990190A CN108990190A (en) | 2018-12-11 |
| CN108990190B true CN108990190B (en) | 2024-06-25 |
Family
ID=64554518
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810952909.5A Active CN108990190B (en) | 2018-08-21 | 2018-08-21 | Triangle magnesium pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108990190B (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN209375955U (en) * | 2018-08-21 | 2019-09-10 | 镇江裕太防爆电加热器有限公司 | A kind of triangle magnesium pipe |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE905181C (en) * | 1942-04-16 | 1954-02-25 | Voigt & Haeffner Ag | Process for the production of electric radiators |
| JPS50125134U (en) * | 1974-03-29 | 1975-10-14 | ||
| DE2460189C2 (en) * | 1974-12-19 | 1985-11-14 | Siemens AG, 1000 Berlin und 8000 München | Instantaneous water heater of an electric coffee machine |
| CN1004918B (en) * | 1987-02-11 | 1989-07-26 | 上海电热电器厂 | The loading method of electrothermal tube insulation filling material |
| JPH07153558A (en) * | 1993-10-04 | 1995-06-16 | Kawai Denki Seisakusho:Kk | Cartridge heater |
| CN1858510A (en) * | 2006-05-29 | 2006-11-08 | 镇江裕太防爆电加热器有限公司 | Energy saving anti-explosion electric heater |
| CN2938681Y (en) * | 2006-08-16 | 2007-08-22 | 镇江裕太防爆电加热器有限公司 | Electric heating element with thermal state isolation performance |
| TW200829067A (en) * | 2006-12-20 | 2008-07-01 | Tai An Electronic Heating Co Ltd | Bullet tube type electrothermal pipe |
| CN204244495U (en) * | 2014-11-03 | 2015-04-01 | 杭州佐帕斯工业有限公司 | A kind of single head electric heating tube structure of double insulation protection |
| CN107708238A (en) * | 2017-09-29 | 2018-02-16 | 扬中市华荣电器设备有限公司 | A kind of explosion-proof electric heater unit |
| CN107708240A (en) * | 2017-11-10 | 2018-02-16 | 常熟市梅李合金材料有限公司 | The heating tube of in-built electrical heated filament |
-
2018
- 2018-08-21 CN CN201810952909.5A patent/CN108990190B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN209375955U (en) * | 2018-08-21 | 2019-09-10 | 镇江裕太防爆电加热器有限公司 | A kind of triangle magnesium pipe |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108990190A (en) | 2018-12-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108990190B (en) | Triangle magnesium pipe | |
| CN204669632U (en) | A kind of Novel pole silk compound pole shape heat-generating pipe | |
| CN204377173U (en) | Highly efficient quick heating electromagnetic induction heating pipe | |
| CN104582025A (en) | Flat filament heating core | |
| CN209375955U (en) | A kind of triangle magnesium pipe | |
| CN104955184B (en) | A kind of Novel pole silk compound pole shape heat-generating pipe | |
| CN1777341A (en) | Finned tube heater and its production method | |
| CN206743575U (en) | A kind of high-performance electric heating tube | |
| RU2561620C1 (en) | Tubular electric heater | |
| CN104159342A (en) | Electric heating steel pipe of heat exchanger | |
| CN211153803U (en) | Spiral heating element | |
| CN206042393U (en) | Adopt electric heating element of boron nitride as insulating material | |
| CN204350339U (en) | Electric boiler heater | |
| CN209375954U (en) | A kind of U-shaped electric heating tube | |
| KR101619205B1 (en) | Energy saving carbon heating elements | |
| CN202364401U (en) | Cast copper electric heater with high efficiency | |
| KR102182971B1 (en) | Electric Heater | |
| CN209545914U (en) | Sheathed heater | |
| CN213462384U (en) | High-power high-density heating pipe for wire threading process | |
| CN103687113A (en) | Archimedes spiral heater | |
| CN215379270U (en) | Flat-bottom electric heating tube | |
| JP2016134240A (en) | Heater and method of manufacturing heater | |
| CN204316765U (en) | Flat filament heating core | |
| CN204478816U (en) | A kind of low-power consumption high temperature resistance furnace | |
| CN107708240A (en) | The heating tube of in-built electrical heated filament |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant |