CN203289670U - Tubular electric heater - Google Patents
Tubular electric heater Download PDFInfo
- Publication number
- CN203289670U CN203289670U CN2013202149083U CN201320214908U CN203289670U CN 203289670 U CN203289670 U CN 203289670U CN 2013202149083 U CN2013202149083 U CN 2013202149083U CN 201320214908 U CN201320214908 U CN 201320214908U CN 203289670 U CN203289670 U CN 203289670U
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- pipe
- heating
- tube
- truncated cone
- wall
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Abstract
The utility model discloses a tubular electric heater which comprises a pipe body, a pipe connector, protective sleeves, heating pipes and sensors. The outer wall of the pipe body is composed of a truncated cone and a cylinder, a small end face of the truncated cone faces towards a fiber guiding-in opening, and one end of the cylinder is in threaded connection with the pipe connector to form locating installation. An axial through hole is formed in the middle of the cross section of the pipe body. 4-8 heating pipes are coaxially embedded around the axial through hole in the central section of the pipe wall at equal intervals. Free ends of the heating pipes are placed on a cylindrical end of the pipe body and are provided with the protective sleeves. One sensor is embedded coaxially on the pipe wall between every two adjacent heating pipes. The tubular electric heater is simple in structure, low in energy consumption and quick and even in heating, temperature difference of rubber materials guided into a mould cavity and alkali-free glass fibers does not exist, and an inner layer and an outer layer can be solidified synchronously. The tubular electric heater is very suitable for production of epoxy group pultrusion mandrels from phi 160mm to phi 250 mm.
Description
Technical field
The utility model relates to a kind of heater, a kind of pipe heater particularly, and this electric heater is for the production of sizing material and the alkali-free glass fibre heating of epoxy radicals pultrusion plug.
Background technology
Epoxy radicals pultrusion plug is a kind of composite insulating material, and this material except good insulation property are arranged, also has intensity high, heat-resisting, cold-resistant, and the characteristics such as mildew-resistant, protection against the tide, shock resistance, have a wide range of applications in electric device.Along with the development of power industry and improving constantly of line voltage grade, supporting epoxy radicals pultrusion plug quality index has been proposed requirements at the higher level, on market, the specification of demand is also increasing.The epoxy radicals drawing and extruding bar is by epoxy resin, formulated without raw materials such as alkali fiber, catalyst, and the sizing material that first will be mixed during production and alkali-free glass fibre are introduced in mould, and then is heated to 160 ℃～200 ℃ and does the hot curing moulding.The epoxy radicals pultrusion plug of the following specification of φ 130mm is little because of volume, can accomplish whole heating and synchronous curing under the prior art condition.And it is relatively large because of volume greater than the epoxy radicals pultrusion plug of φ 130mm, be difficult to accomplish that internal and external temperature is consistent under the supporting heating condition of existing equipment, internal-external temperature difference must cause curing asynchronous, and the internal stress that generates thus easily causes crackle and causes product rejection.So the commodity epoxy radicals pultrusion plug that circulates on current market only has the following specification of φ 130mm, there is no the above specification supply of φ 130mm.Some manufacturers of the industry once were used for radiothermics the production of large specification epoxy pultrusion plug, although this kind heating technique is effective, and, radiothermics is applied in when epoxy radicals pultrusion plug is produced and has two large problems.Maximum problem is Contamination of Electromagnetic Wave, and it is healthy that the electromagnetic wave that heating process produces had both endangered the worker, also communication, instrument, the electronic equipment of periphery had severe jamming.Another problem is that corollary equipment is expensive, and the heating energy consumption is large, and high energy consumption must strengthen the production cost.Just due to the problems referred to above objective reality, radiothermics is not suitable for the production of epoxy radicals pultrusion plug.
The utility model content
The utility model can not be produced the deficiency of the above specification of φ 130mm mainly for the existing supporting heater of extruding equipment, proposes a kind of simple in structurely, and supporting easily power consumption is few, heating is quick, evenly, reliable pipe heater.This heater assigns in sizing material fiber intake, be incorporated in die cavity and solidify after the sizing material that flows through along the heater inside and outside wall and alkali-free glass fibre are heated, this heating arrangement is particularly suitable for the epoxy radicals pultrusion plug production of φ 160mm～φ 250mm super-large diameter.
The utility model is achieved through the following technical solutions technical goal.
Pipe heater, it comprises body, pipe joint, protecting pipe, heating tube and transducer.Improvements are: described body is thick-walled tube shape member, and its outer wall is comprised of truncated cone and cylinder, and the small end face of truncated cone is towards the sizing material fiber intake of corollary equipment, and cylinder one end and pipe joint screw thread connect and compose location and installation.The body cross section is provided with axially extending bore between two parties, in tube wall, annulate shaft is to 4～8 heating tubes of the equidistant coaxial setting-in of through hole, the heating tube free end is positioned at the cylindrical end of body and is provided with protecting pipe, coaxial setting-in transducer on the tube wall between any two adjacent heating tubes.
In said structure, the truncated cone tapering of body is 1: 4～1: 6.The built-in axially extending bore of body is circular hole, and bore is φ 25mm～φ 50 mm.Heating tube is electrothermal tube, and every electrothermal tube power is equal, and single power is 500w～2500w.Transducer is the temperature sensor of 0 ℃～300 ℃ of temperature-measuring ranges.
The utility model compared with prior art, has following good effect:
1, tubular heater is simple in structure, easy to manufacture, installation site is reliable;
2, pipe heater is among the sizing material and alkali-free glass fibre of preparation, and heating is quick, even, and energy consumption of unit product is only 1/20～1/30 of prior art, and production cost is low, and is good in economic efficiency;
3, sizing material and the alkali-free glass fibre of introducing die cavity are heated under the uniform temp condition, heating-up temperature is consistent, and the hot curing steady quality is particularly suitable for the epoxy radicals pultrusion plug production of φ 160mm～φ 250mm;
4, do not produce problem of environmental pollution in electric heating process, fail safe is good, and social benefit is remarkable.
Description of drawings
Fig. 1 is the utility model structural profile schematic diagram.
Fig. 2 is Fig. 1 right view.
Embodiment
Below with reference to the accompanying drawings and in conjunction with the embodiments, the utility model is described in further detail.
Embodiment 1
Pipe heater shown in Figure 1 is used for the production of epoxy radicals pultrusion plug, and it comprises body 1, pipe joint 2, protecting pipe 3, heating tube 4 and transducer 5.Described body 1 is main component of the present utility model, this member is the thick-walled tube shape, its outer wall is comprised of truncated cone and cylinder, and the small end face of truncated cone is towards corollary equipment sizing material fiber intake, and cylinder one end and pipe joint screw thread connect and compose location and installation.Body 1 cross section is provided with axially extending bore 1.1 between two parties, and the sizing material of alkali-free glass fibre and part allotment enters in die cavity from axially extending bore 1.1, and another part sizing material enters in die cavity along body 1 outer wall.In accomplishing that sizing material and alkali-free glass fibre enter die cavity after the isothermal heating, the utility model in body 1 tube wall annulate shaft to the equidistant coaxial setting-in heating tube 4 of through hole 1.1, heating tube 4 free ends are positioned at the cylindrical end of body 1, alternate protecting pipe 3 between the two.Described heating tube 4 is electrothermal tube, and every electrothermal tube power equates, so just can accomplish homogeneous heating.The present embodiment is for the manufacture of the epoxy radicals pultrusion plug of φ 130mm, because of product specification large, consume sizing material and alkali-free glass fibre amount many, and the sizing material intake of corollary equipment is circular hole, therefore the built-in axially extending bore 1.1 of body 1 is circular hole, bore is φ 30mm, and the tapering of truncated cone is 1: 4, the heating tube 4 of embedded 6 0.5kw of body 1.For the accuracy controlling heating-up temperature, guarantee to solidify quality, the temperature sensor of the utility model one 0 ℃～300 ℃ of coaxial setting-ins between any two adjacent heating tubes 4, the information of output is as the temperature adjustment foundation thus.The technique effect that the utility model is obtained is that sizing material and the alkali-free glass fibre introduced in die cavity obtain homogeneous heating, sizing material synchronously solidifies under the uniform temp condition, epoxy radicals pultrusion plug inside after curing does not have internal stress, so do not crack and gas hole defect good product quality and stable.Because pipe heater is simple in structure, heating is quick, even, and energy consumption is only 1/22 of prior art, so the utility model is particularly suitable for the production of large specification epoxy radicals pultrusion plug.
The present embodiment is used for the epoxy radicals pultrusion plug of φ 250mm to be produced, larger than embodiment 1 because of product specification, consumes sizing material and alkali-free glass fibre amount more, although the pipe heater structure of adapted is the same manner as in Example 1, important technological parameters makes an adjustment.Axially extending bore 1.1 bores as built-in in body 1 increase to φ 50 mm, the tapering of truncated cone is 1: 4, the heating tube 4 of embedded 8 1500w of body 1, pipe heater under this configuration is similar with embodiment 1 effect, and energy consumption is only 1/30 of prior art, and application the utlity model has good economic benefit and social benefit.
Claims (5)
1. pipe heater, it comprises body (1), pipe joint (2), protecting pipe (3), heating tube (4) and transducer (5); It is characterized in that: described body (1) is thick-walled tube shape member, its outer wall is comprised of truncated cone and cylinder, the small end face of truncated cone is towards the sizing material fiber intake of corollary equipment, the cylinder one end formation location and installation that is threaded with pipe joint (2); Body (1) cross section is provided with axially extending bore (1.1) between two parties, in tube wall, annulate shaft is to equidistant 4～8 heating tubes of coaxial setting-in of through hole (1.1) (4), heating tube (4) free end is positioned at the cylindrical end of body (1) and is provided with protecting pipe (3), coaxial setting-in transducer (5) on the tube wall between any two adjacent heating tubes (4).
2. pipe heater according to claim 1, it is characterized in that: the truncated cone tapering of described body (1) is 1: 4～1: 6.
3. pipe heater according to claim 1, it is characterized in that: the built-in axially extending bore (1.1) of described body (1) is circular hole, and bore is φ 25mm～φ 50mm.
4. pipe heater according to claim 1, it is characterized in that: described heating tube (4) is electrothermal tube, and every electrothermal tube power equates, and single power is 500w～1500w.
5. pipe heater according to claim 1 is characterized in that: described transducer (5) is the temperature sensor of 0 ℃～300 ℃ of temperature-measuring ranges.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202149083U CN203289670U (en) | 2013-04-25 | 2013-04-25 | Tubular electric heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202149083U CN203289670U (en) | 2013-04-25 | 2013-04-25 | Tubular electric heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203289670U true CN203289670U (en) | 2013-11-13 |
Family
ID=49546009
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013202149083U Withdrawn - After Issue CN203289670U (en) | 2013-04-25 | 2013-04-25 | Tubular electric heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203289670U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103220832A (en) * | 2013-04-25 | 2013-07-24 | 泰州华东绝缘材料有限公司 | Tubular electric heater |
-
2013
- 2013-04-25 CN CN2013202149083U patent/CN203289670U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103220832A (en) * | 2013-04-25 | 2013-07-24 | 泰州华东绝缘材料有限公司 | Tubular electric heater |
| CN103220832B (en) * | 2013-04-25 | 2015-04-08 | 泰州华东绝缘材料有限公司 | Tubular electric heater |
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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: 20131113 Effective date of abandoning: 20150408 |
|
| RGAV | Abandon patent right to avoid regrant |