CN202773103U - Electrical heating tube with lower rated voltage and higher rated power - Google Patents
Electrical heating tube with lower rated voltage and higher rated power Download PDFInfo
- Publication number
- CN202773103U CN202773103U CN 201220473554 CN201220473554U CN202773103U CN 202773103 U CN202773103 U CN 202773103U CN 201220473554 CN201220473554 CN 201220473554 CN 201220473554 U CN201220473554 U CN 201220473554U CN 202773103 U CN202773103 U CN 202773103U
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- resistance wire
- heating tube
- resistance
- electric heating
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Abstract
The utility model relates to an electrical heating tube with lower rated voltage and higher rated power. The electrical heating tube comprises a resistance wire component, wherein the resistance wire component comprises a pair of lead rods which are symmetrical in structure and coaxially arranged in opposite form, and a resistance wire formed by multiple resistance wires in a manner of coiling. Two ends of the resistance wire are respectively sleeved on upper wire positions of the pair of lead rods, and the upper wire positions and the resistance wire are fixed in a welding manner; and the diameter d1 of the resistance wire is 0.4-0.7 mm.
Description
Technical field
The utility model relates to the electric heating tube that a kind of rated voltage is less and rated power is larger.
Background technology
The voltage range of every country is different, and the power bracket of electric heating tube is different, and environment for use is different, and the caliber of electric heating tube is not equal, and this just requires resistance wire designing requirement and the manufacturing process of product more and more higher.At home, although electric heating tube is produced the time in 20 years, but the electric heating tube manufacturing technology is also very backward, a lot of rated voltages are little but product that rated power is large because of the restriction of production technology, make single resistance wire diameter too high than ambassador's resistance wire intensity, cause the spiral filament forming machine can't wrapping wire, the reach the standard grade weld of position of resistance wire ring and lead-in wire rod be broken easily in dress powder process and the draw process, causes the problem that can't make more than the electrothermal tube pipe range 1500mm; For the selected tubing of domestic electric heating pipe, little for rated voltage, and the large product of rated power, satisfy the resistance requirement, if adopt single resistance wire structure, the resistance wire diameter is increased, cause the resistance wire bending strength excessive, the coiling distance of resistance wire ring external diameter and electric heating tube inwall is too short, has a strong impact on the electric property of electrothermal tube.
The utility model content
The technical problems to be solved in the utility model provides the electric heating tube that a kind of rated voltage is less and rated power is larger.
For solving the problems of the technologies described above, the utility model relates to the electric heating tube that a kind of rated voltage is less and rated power is larger, and it comprises: the resistance wire assembly; This resistance wire assembly comprises: a pair of symmetrical configuration and the coaxial resistance wire that is oppositely arranged lead-in wire rod, is turned to by many resistance wires, the two ends of described resistance wire are set in respectively on the position of reaching the standard grade of described pair of lead wires rod, and the described position of reaching the standard grade is welded and fixed with resistance wire; The diameter d 1 of described resistance wire is 0.4-0.7mm; The described position of reaching the standard grade is tapered, and this inclined-plane of reaching the standard grade the position is provided with screw thread.
The technique effect that the utlity model has: (1) is less for rated voltage, and the electric heating tube that rated power is large and pipe range is long, the structure of employing parallel resistance silk reduces the resistance wire diameter, realizes the resistance wire wrapping wire; Reduce simultaneously the resistance wire load, increased electrothermal tube useful life; (2) increase the operation that the resistance wire ring fills the front prestretching of powder and energising heating prestretching, solution is shaken a weld of reaching the standard grade of resistance wire and lead-in wire rod is broken easily in powder and the draw process problem (because be close together between the resistance wire ring silk before the powder that shakes, shake and pulled open between the circle silk behind the powder, in draw process, again pulled open), and can better guarantee the uniformity that resistance wire is arranged; (3) reduce the resistance wire diameter, increase the creepage distance of resistance wire ring external diameter and inside pipe wall, guarantee the electric property of electrothermal tube.
Description of drawings
For content of the present utility model is more likely to be clearly understood, below the specific embodiment and by reference to the accompanying drawings of basis, the utility model is described in further detail, wherein
Fig. 1 is the structural representation of resistance wire assembly of the present utility model;
Fig. 2 is the structural representation of the electric heating tube of resistance wire of the present utility model.
Embodiment
Below in conjunction with drawings and Examples the utility model is elaborated:
Because the tubing restriction (Φ 6.2mm, 6.5mm, 8.0mm, 8.5mm) that the domestic electric heating pipe is selected, if the resistance wire of electric heating tube adopts the structure of parallel resistance silk circuit, then rated voltage is little, the electric heating tube that rated power is large can adopt less resistance wire diameter processing, the electric heating tube caliber is that Φ 6.2mm, wall thickness are 0.5mm, and resistance wire ring outer diameter D is controlled at Φ 1.8～2.6mm; Caliber is that Φ 6.5mm, wall thickness are 0.5mm, and resistance wire ring outer diameter D is controlled at Φ 1.8～2.8mm; Caliber is that Φ 8.0mm, wall thickness are 0.5mm, and resistance wire ring outer diameter D is controlled at Φ 1.8～4.3mm; Caliber is that Φ 8.5mm, wall thickness are 0.5mm, and resistance wire ring outer diameter D is controlled at Φ 1.8～4.8mm; Reduce the resistance wire diameter, increase the creepage distance of resistance wire ring outer diameter D and inside pipe wall, guarantee the electric property of electrothermal tube.
See Fig. 1, the electric heating tube that the rated voltage of present embodiment is less and rated power is larger comprises: the resistance wire assembly; This resistance wire assembly comprises: a pair of symmetrical configuration and coaxially be oppositely arranged lead-in wire rod 1, by two to four resistance wires that resistance wire turns to 2, the two ends of described resistance wire 2 are set in respectively on the position 4 of reaching the standard grade of described pair of lead wires rod 1, and the described position 4 of reaching the standard grade is welded and fixed with resistance wire 2; The diameter d 1 of described resistance wire 2 is 0.4-0.7mm; The described position 4 of reaching the standard grade is tapered, and this inclined-plane of reaching the standard grade position 4 is provided with screw thread.
The manufacture method of above-mentioned electric heating tube, it comprises:
1. coaxial another wire feed rolls of setting up of one side of the wire feed rolls on the monofilament spiral filament forming machine, make two resistance wires can enter simultaneously described monofilament spiral filament forming machine and turn to resistance wire 2, then the two ends of described resistance wire 2 be set in respectively two the lead-in wire excellent 1(be also referred to as cold pin) reach the standard grade the position 4 on, by welding described lead-in wire rod 1 reach the standard grade position 4 and the end fix formation resistance wire assembly;
If 2. the pipe range of the metal tube 3 of formation electric heating tube is below 1000mm, then need not to elongate; If the pipe range of the metal tube 3 of formation electric heating tube is more than 1000mm, and this pipe range is 2.5～4.0 times of resistance wire 2 length, then with pretension fixing device described resistance wire assembly is elongated 1.6～3.5 times, thereby be that the again elongation of resistance wire assembly left surplus during the follow-up powder that shakes was processed; 3. being set in the resistance wire assembly after the described elongation in the described metal pipe material and using powder feeding machine to add insulating powder 5(in the described metal tube is magnesia powder), then the powder that shakes processing (work of powder feeding machine comprises: be located at the resistance wire assembly in the described metal pipe material and again elongate, powder shakes), obtain electric heating tube component; 4. use machine for shrinking that this electric heating tube component is carried out draw processing, the last extremely directly standard size length of elongating of electric heating tube component, for example: in machine for shrinking the tubing of Φ 8.0mm is rolled the 6.5mm to Φ through roller, pipe range increases simultaneously.
Obviously, above-described embodiment only is for the utility model example clearly is described, and is not to be restriction to execution mode of the present utility model.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here need not also can't give all execution modes exhaustive.And these belong to apparent variation or the change that spirit of the present utility model extended out and still are among the protection range of the present utility model.
Claims (1)
1. the electric heating tube that rated voltage is less and rated power is larger is characterized in that comprising: the resistance wire assembly; This resistance wire assembly comprises: a pair of symmetrical configuration and the coaxial resistance wire that is oppositely arranged lead-in wire rod, is turned to by many resistance wires, the two ends of described resistance wire are set in respectively on the position of reaching the standard grade of described pair of lead wires rod, and the described position of reaching the standard grade is welded and fixed with resistance wire;
The diameter d 1 of described resistance wire is 0.4-0.7mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220473554 CN202773103U (en) | 2012-09-17 | 2012-09-17 | Electrical heating tube with lower rated voltage and higher rated power |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220473554 CN202773103U (en) | 2012-09-17 | 2012-09-17 | Electrical heating tube with lower rated voltage and higher rated power |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202773103U true CN202773103U (en) | 2013-03-06 |
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ID=47779640
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220473554 Expired - Fee Related CN202773103U (en) | 2012-09-17 | 2012-09-17 | Electrical heating tube with lower rated voltage and higher rated power |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202773103U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104994607A (en) * | 2015-07-07 | 2015-10-21 | 芜湖华族实业有限公司 | Positive-temperature-coefficient-thermistor electric heater |
| CN104994604A (en) * | 2015-07-07 | 2015-10-21 | 芜湖华族实业有限公司 | Novel multi-layer heat radiation structure of heater |
| CN105050214A (en) * | 2015-07-07 | 2015-11-11 | 芜湖华族实业有限公司 | Environment-friendly heater |
-
2012
- 2012-09-17 CN CN 201220473554 patent/CN202773103U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104994607A (en) * | 2015-07-07 | 2015-10-21 | 芜湖华族实业有限公司 | Positive-temperature-coefficient-thermistor electric heater |
| CN104994604A (en) * | 2015-07-07 | 2015-10-21 | 芜湖华族实业有限公司 | Novel multi-layer heat radiation structure of heater |
| CN105050214A (en) * | 2015-07-07 | 2015-11-11 | 芜湖华族实业有限公司 | Environment-friendly heater |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130306 Termination date: 20140917 |
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| EXPY | Termination of patent right or utility model |