CN202261849U - End moisture-proof structure of electric heating tube - Google Patents
End moisture-proof structure of electric heating tube Download PDFInfo
- Publication number
- CN202261849U CN202261849U CN2011203526148U CN201120352614U CN202261849U CN 202261849 U CN202261849 U CN 202261849U CN 2011203526148 U CN2011203526148 U CN 2011203526148U CN 201120352614 U CN201120352614 U CN 201120352614U CN 202261849 U CN202261849 U CN 202261849U
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- moisture
- proof
- outer tube
- sealing layer
- electric heating
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- Withdrawn - After Issue
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Abstract
The utility model relates to an end moisture-proof structure of an electric heating tube. The end moisture-proof structure comprises an outer tube and a leading-out rod which is extended out of the end of the outer tube, wherein magnesium oxide powder is filled into the outer tube; the end of the outer tube is sealed by a sealing layer; and a moisture-proof layer is arranged between the sealing layer and the magnesium oxide powder. As the moisture-proof layer is arranged between the sealing layer and the magnesium oxide powder, the moisture-proof layer still can prevent the external environment moisture from intruding an insulating material magnesium oxide powder even if the sealing layer is destroyed. The end moisture-proof structure of the electric heating tube is reliable in moisture prevention, can effectively guarantee the insulating performance of the electric heating tube for a long time, and can reduce the safety risk caused by weakening of electrical insulation of the insulating material due to moisture.
Description
Technical field
The utility model relates to the tubular metal electric heating element, specifically a kind of end moisture-proof construction of electrothermal tube.
Background technology
Tubular metal electric heating element (electrothermal tube) is widely used in electroheat equipment, is the core parts of electric heating equipment, and its electrical insulative property is related to the safe in utilization of electroheat equipment.The inner insulating material of filling of tubular metal electric heating element is a magnesia powder, and pipe end adopts room temperature vulcanized silicone rubber to seal more.After the joint filling material damage, tubular metal electric heating element interior oxidation magnesium powder is easy to the moisture in the absorbing environmental and causes the insulation resistance of electric heating element to descend, thereby influences the safe in utilization of electroheat equipment.
Summary of the invention
The utility model provides a kind of end moisture-proof construction of electrothermal tube to the problems referred to above, and this structure can be guaranteed to intercept external environment condition moisture and invade electrothermal tube, guarantees the insulation property of electrothermal tube.
Technical scheme according to the utility model: a kind of end moisture-proof construction of electrothermal tube; Comprise outer tube and the eduction rod that stretches out from said outer tube end; Be filled with magnesia powder in the said outer tube; The end portion encloses of said outer tube has sealing layer, is provided with damp-proof layer between said sealing layer and the said magnesia powder.
Said sealing layer adopts sulphurated siliastic.
Said damp-proof layer is the mixture of methyl-silicone oil and magnesia powder.
Said damp-proof layer presses the injection magnesia powder to form by the methyl-silicone oil band.
The technique effect of the utility model is: the utility model is provided with damp-proof layer between sealing layer and magnesia powder, even if sealing layer is destroyed, damp-proof layer also can be guaranteed to intercept external environment condition moisture and invade the insulating material magnesia powder; The utility model is moistureproof reliable, can guarantee the insulation property of electric heating element long-term effectively, reduces because of insulating material makes moist and causes the security risk that the electric insulation reduction brings.
Description of drawings
Fig. 1 is the structural representation of the utility model.
Embodiment
Be further described below in conjunction with the embodiment of accompanying drawing the utility model.
Among Fig. 1, comprise eduction rod 1, outer tube 2, magnesia powder 5, sealing layer 3, damp-proof layer 4, magnesia powder 5 etc.
As shown in Figure 1, the utility model is a kind of end moisture-proof construction of electrothermal tube, comprises outer tube 2 and the eduction rod 1 that stretches out from outer tube 2 ends, is filled with magnesia powder 5 in the outer tube 2, and the end portion encloses of outer tube 2 has sealing layer 3, and sealing layer 3 adopts sulphurated siliastic.Between sealing layer 3 and magnesia powder 5, be provided with damp-proof layer 4.
Damp-proof layer 4 is the mixture of methyl-silicone oil and magnesia powder.Electrothermal tube is after the high temperature humidity discharging is handled; Blow off the mouth of pipe of outer tube 2 with dry compressed air; In port, add methyl-silicone oil, the method that adopts the band extrusion to annotate with dried compressed air is pressed into the methyl-silicone oil of hydrophobicity and excellent in insulation characteristic in the magnesia powder of electrothermal tube end 5-6 mm length; Form damp-proof layer 4, as the internal barrier of magnesia powder 5 protection against the tide; In the mouth of pipe, add room temperature vulcanized silicone rubber again and form sealing layer 3, methyl-silicone oil and room temperature vulcanized silicone rubber have intersolubility, do not reduce the insulation characterisitic of sealing silastic material.
After adopting the structure of the utility model, even if since factors such as assembling cause the electrothermal tube port outside room temperature vulcanized silicone rubber sealing layer 3 seal inefficacy, band presses the methyl-silicone oil that injects also can guarantee to intercept external environment condition moisture intrusion insulating material magnesia powder.The utility model is moistureproof reliable, can guarantee the insulation property of electric heating element long-term effectively, reduces because of insulating material makes moist and causes the security risk that the electric insulation reduction brings.
Claims (4)
1. the end moisture-proof construction of an electrothermal tube; Comprise outer tube (2) and the eduction rod (1) that stretches out from said outer tube (2) end; Be filled with magnesia powder (5) in the said outer tube (2); It is characterized in that: the end portion encloses of said outer tube (2) has sealing layer (3), is provided with damp-proof layer (4) between said sealing layer (3) and the said magnesia powder (5).
2. according to the end moisture-proof construction of the described electrothermal tube of claim 1, it is characterized in that: said sealing layer (3) adopts sulphurated siliastic.
3. according to the end moisture-proof construction of claim 1 or 2 described electrothermal tubes, it is characterized in that: said damp-proof layer (4) is the mixture of methyl-silicone oil and magnesia powder.
4. according to the end moisture-proof construction of the described electrothermal tube of claim 3, it is characterized in that: said damp-proof layer (4) presses the injection magnesia powder to form by methyl-silicone oil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203526148U CN202261849U (en) | 2011-09-20 | 2011-09-20 | End moisture-proof structure of electric heating tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203526148U CN202261849U (en) | 2011-09-20 | 2011-09-20 | End moisture-proof structure of electric heating tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202261849U true CN202261849U (en) | 2012-05-30 |
Family
ID=46123022
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203526148U Withdrawn - After Issue CN202261849U (en) | 2011-09-20 | 2011-09-20 | End moisture-proof structure of electric heating tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202261849U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102316614A (en) * | 2011-09-20 | 2012-01-11 | 无锡博睿奥克电气有限公司 | End part dampproof structure for electric heating pipe |
-
2011
- 2011-09-20 CN CN2011203526148U patent/CN202261849U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102316614A (en) * | 2011-09-20 | 2012-01-11 | 无锡博睿奥克电气有限公司 | End part dampproof structure for electric heating pipe |
| CN102316614B (en) * | 2011-09-20 | 2013-03-27 | 无锡博睿奥克电气有限公司 | End part dampproof structure for electric heating pipe |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20120530 Effective date of abandoning: 20130327 |
|
| RGAV | Abandon patent right to avoid regrant |