CN103220831B - Rodlike electric heater - Google Patents
Rodlike electric heater Download PDFInfo
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- CN103220831B CN103220831B CN201310146947.9A CN201310146947A CN103220831B CN 103220831 B CN103220831 B CN 103220831B CN 201310146947 A CN201310146947 A CN 201310146947A CN 103220831 B CN103220831 B CN 103220831B
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- electric heater
- barred body
- heating tubes
- rodlike
- heating tube
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Abstract
The invention discloses a rodlike electric heater which comprises a rod body, a pipe connector, sheath sleeves, heating tubes and sensors. The rod body is a straight rod member and is composed of a top-cut conical body and a cylinder body, wherein the small end face of the top-cut conical body faces towards a sizing material inlet of corollary equipment, and the free end of the cylinder body is connected with threads which are connected with the pipe connector to form a location installation. The heating tubes are embedded in the rod body at equal intervals, the straight-rod-shaped heating tubes and the rod body are coaxial, the free ends of the heating tubes are arranged at one end of the cylinder body of the rod body, the sheath sleeves are arranged at the free ends of the heating tubes, and one sensor is embedded between any two adjacent heating tubes coaxially. The rodlike electric heater has the advantages that sizing materials and alkali-free glass fibers which are guided into a mould cavity are evenly heated, the sizing materials can be synchronously solidified under the condition of the same temperature, internal stress is avoided in a solidified epoxy group base pultrusion core bar, the defects of cracks and air holes are overcome, and product quality is good and stable. The rodlike electric heater is especially suitable for production of epoxy group base pultrusion core bars of phi 110mm to phi 150mm.
Description
Technical field
The present invention relates to a kind of heater, specifically, the present invention relates to a kind of Rodlike electric heater, this electric heater is for the production of the sizing material of epoxy radicals pultrusion plug and alkali-free glass fibre heating.
Background technology
Epoxy radicals pultrusion plug is a kind of composite insulating material, and this material, apart from outside excellent insulation property, 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, propose requirements at the higher level to supporting epoxy radicals pultrusion plug quality index, the specification of market demand is also increasing.Epoxy radicals drawing and extruding bar is formulated by raw materials such as epoxy resin, alkali-free glass fibre, catalyst, and the sizing material first mixture become during production and alkali-free glass fibre traction in mould, and then are heated to 160 DEG C ~ 200 DEG C and make curing molding.The epoxy radicals pultrusion plug of the following specification of φ 130mm is relatively little because of volume, can accomplish overall heating under prior art conditions and synchronously solidify.And the epoxy radicals pultrusion plug being greater than φ 130mm because of volume relatively large, be difficult to accomplish that internal and external temperature is consistent under the heating condition that existing equipment is supporting, internal-external temperature difference must cause solidification asynchronous, and the internal stress generated thus easily causes crackle and causes product rejection.So the commodity epoxy radicals pultrusion plug circulated in current market only has the following specification of φ 130mm, does not have the above specification of φ 130mm.Radiothermics was once used for the production of large gauge epoxy pultrusion plug by some manufacturers of the industry, although this kind of heating technique is effective, and, radiothermics is applied in when epoxy radicals pultrusion plug is produced exists two large problems.Maximum problem is Contamination of Electromagnetic Wave, and both to have endangered worker healthy for the electromagnetic wave that heating process produces, and also has severe jamming to the communication of periphery, instrument, electronic equipment.Another problem is that corollary equipment is expensive, and heating energy consumption is large, the inevitable larger production production cost of high energy consumption.Just due to the problems referred to above objective reality, radiothermics be not suitable for the production of epoxy radicals pultrusion plug.
Summary of the invention
The present invention, mainly for the deficiency supporting heater of existing equipment can not being produced the above specification of φ 130mm, proposes a kind of structure simple, easily supporting, and power consumption is few, heats convenient, even, reliable Rodlike electric heater.This electric heater assigns in the sizing material intake of corollary equipment, through drawing in die cavity after the sizing material flow through and alkali-free glass fibre being heated, solidifying and not producing internal stress, product flawless and pore under same temperature condition along electric heater outer wall.
The present invention is achieved through the following technical solutions technical goal.
Rodlike electric heater, it comprises barred body, pipe joint, protecting pipe, heating tube and transducer.Improvements are: described barred body is straight rod member, is made up of truncated cone and cylinder, and the small end face of truncated cone is towards the sizing material intake of corollary equipment, and cylindrical free end is provided with screw thread and pipe joint connects and composes location and installation.The same heating tube being circumferentially provided with equidistant setting-in in barred body, heating tube and the barred body of direct rod shape are coaxial, and heating tube free end is positioned at barred body cylindrical member at one end and is provided with protecting pipe, coaxial setting-in transducer between any two adjacent heating tubes.
In said structure, barred body is main component, and the truncated cone tapering of barred body is 1: 4 ~ 1: 6.Heating tube is electrothermal tube, and built-in 4 ~ 8 electrothermal tubes of barred body, often prop up electrothermal tube power equal, single power is 0.4kw ~ 0.8kw.Transducer is temperature measuring type, temperature-measuring range 0 DEG C ~ 300 DEG C.
The present invention compared with prior art, has following good effect:
1, heater air flow pressure switch rod structure is simple, easy to manufacture, installation site is reliable;
2, among the Rodlike electric heater sizing material that is in configuration and alkali-free glass fibre, heating is quick, evenly, energy consumption of unit product is only 1/20 ~ 1/30 of prior art, and production cost is low, and production efficiency improves more than 20%.Good in economic efficiency;
3, the sizing material introducing die cavity is heated under identical temperature conditions with alkali-free glass fibre, and heating-up temperature is consistent, hot curing steady quality, and the epoxy radicals pultrusion plug being particularly suitable for φ 110mm ~ φ 150mm is produced;
4, do not produce problem of environmental pollution in electric heating process, fail safe is good, and social benefit is remarkable.
Accompanying drawing explanation
Fig. 1 is structural profile schematic diagram of the present invention.
Fig. 2 is Fig. 1 right view.
Embodiment
Below with reference to the accompanying drawings and in conjunction with the embodiments, the invention will be further described.
Embodiment 1
Rodlike electric heater shown in Fig. 1, it comprises barred body 1, pipe joint 2, protecting pipe 3, heating tube 4 and transducer 5.Described barred body 1 is straight rod member, be made up of truncated cone and cylinder, the small end face of truncated cone is towards corollary equipment sizing material intake, cylindrical free end is provided with screw thread and pipe joint 2 connects and composes location and installation, the same heating tube 4 being circumferentially provided with equidistant setting-in in barred body 1, the heating tube 4 of direct rod shape is coaxial with barred body 1, heating tube 4 free end is positioned at barred body 1 cylindrical member at one end and is provided with protecting pipe 3, the present embodiment is for the manufacture of the epoxy radicals pultrusion plug of φ 110mm, because product specification is large, consume sizing material and alkali-free fibre weight many, heating power is corresponding larger.Coordinate with the sizing material intake of the equipment that matches for the ease of barred body 1, truncated cone is made 1: 4 tapering, same circumferentially embedding 4 heating tubes 4 in barred body 1, heating tube 4 is a kind of direct rod shape electrothermal tubes, often prop up power and size is equal, single power is 0.45kw, and this structure accomplishes that barred body 1 external skin temperatures is consistent.In order to accuracy controlling heating-up temperature, guarantee to solidify quality, the temperature sensor 5 of coaxial setting-in one 0 DEG C ~ 300 DEG C between any two adjacent heating tubes 4, the information exported thus is as temperature adjustment foundation.The technique effect that the present invention obtains is mainly reflected in introduces sizing material in die cavity and alkali-free glass fibre obtains homogeneous heating, synchronously solidify under identical temperature conditions, epoxy radicals pultrusion plug inside after solidification does not have internal stress, so do not crack and gas hole defect, good product quality and stable, and energy consumption is only 1/20 of prior art, in production process to environment without any pollution.
Embodiment 2
The present embodiment is produced for the epoxy radicals pultrusion plug of φ 150mm, because product specification is larger than embodiment 1, consume sizing material and alkali-free glass fibre amount more, so need larger heating power, although the Rodlike electric heater structure of adapted is the same manner as in Example 1, important technological parameters makes an adjustment.Tapering as the truncated cone of barred body 1 one end is 1: 6, the heating tube 4 of same circumferentially embedding 8 0.8kw in barred body 1.Rodlike electric heater is under this arrangement similar with embodiment 1 effect, and energy consumption is lower, is about 1/30 of prior art, applies the present invention thus and has good economic benefits and social benefit.
Claims (4)
1. a Rodlike electric heater, it comprises barred body (1), pipe joint (2), protecting pipe (3), heating tube (4) and transducer (5), it is characterized in that: described barred body (1) is straight rod member, be made up of truncated cone and cylinder, the small end face of truncated cone is towards the sizing material intake of corollary equipment, cylindrical free end is provided with screw thread and pipe joint (2) connects and composes location and installation, the same heating tube (4) being circumferentially provided with equidistant setting-in in barred body (1), the heating tube (4) of direct rod shape is coaxial with barred body (1), heating tube (4) free end is positioned at barred body (1) cylindrical member at one end and is provided with protecting pipe (3), coaxial setting-in transducer (5) between any two adjacent heating tubes (4).
2. Rodlike electric heater according to claim 1, is characterized in that: the truncated cone tapering of described barred body (1) is 1: 4 ~ 1: 6.
3. Rodlike electric heater according to claim 1, is characterized in that: described heating tube (4) is electrothermal tube, and built-in 4 ~ 8 electrothermal tubes of barred body (1), often prop up electrothermal tube power equal, single power is 0.4kw ~ 0.8kw.
4. Rodlike electric heater according to claim 1, is characterized in that: described transducer (5) is the temperature sensor of temperature-measuring range 0 DEG C ~ 300 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310146947.9A CN103220831B (en) | 2013-04-25 | 2013-04-25 | Rodlike electric heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310146947.9A CN103220831B (en) | 2013-04-25 | 2013-04-25 | Rodlike electric heater |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103220831A CN103220831A (en) | 2013-07-24 |
| CN103220831B true CN103220831B (en) | 2015-02-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310146947.9A Active CN103220831B (en) | 2013-04-25 | 2013-04-25 | Rodlike electric heater |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2715449Y (en) * | 2004-06-22 | 2005-08-03 | 黄群 | Heating arrangement |
| CN101728036A (en) * | 2010-01-26 | 2010-06-09 | 陕西泰普瑞电工绝缘技术有限公司 | Method for preparing solid core rod of one-step molded high-voltage composite insulator |
| CN202353836U (en) * | 2011-11-11 | 2012-07-25 | 湖南高峰陶瓷制造有限公司 | Ceramic heating pipe |
| CN203289672U (en) * | 2013-04-25 | 2013-11-13 | 泰州华东绝缘材料有限公司 | Rod-shaped electric heater |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110306718A1 (en) * | 2010-05-11 | 2011-12-15 | Basf Se | Pultrusion process |
-
2013
- 2013-04-25 CN CN201310146947.9A patent/CN103220831B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2715449Y (en) * | 2004-06-22 | 2005-08-03 | 黄群 | Heating arrangement |
| CN101728036A (en) * | 2010-01-26 | 2010-06-09 | 陕西泰普瑞电工绝缘技术有限公司 | Method for preparing solid core rod of one-step molded high-voltage composite insulator |
| CN202353836U (en) * | 2011-11-11 | 2012-07-25 | 湖南高峰陶瓷制造有限公司 | Ceramic heating pipe |
| CN203289672U (en) * | 2013-04-25 | 2013-11-13 | 泰州华东绝缘材料有限公司 | Rod-shaped electric heater |
Non-Patent Citations (1)
| Title |
|---|
| 关志成等.《绝缘子及输变电设备外绝缘》.《绝缘子及输变电设备外绝缘》.清华大学出版社,2006,第77页. * |
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| CN103220831A (en) | 2013-07-24 |
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