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Hot oil type tubular heater

A heater and tubular technology, applied in the field of tubular heaters, can solve the problems of communication, instrumentation and electronic equipment interference, not suitable for epoxy-based pultrusion mandrels, and endangering the health of employees, etc., to achieve stable thermal curing quality and social benefits Significant, low-cost production effects

Active Publication Date: 2013-07-24
泰州华东绝缘材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The biggest problem is electromagnetic wave pollution. The electromagnetic waves generated during the heating process not only endanger the health of employees, but also seriously interfere with surrounding communications, instruments, and electronic equipment.
Another problem is that the supporting equipment is expensive, and the heating energy consumption is large. High energy consumption will inevitably increase the production cost of the product.
Due to the objective existence of the above problems, radio frequency heating technology is not suitable for the production of epoxy-based pultrusion mandrels

Method used

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Experimental program
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Effect test

Embodiment 1

[0016] figure 1 The shown thermal oil tubular heater is used for the production of epoxy-based pultrusion mandrel, which includes a shell 1, a pipe joint 2, an inlet pipe 3, a return pipe 4, a heat medium 5 and a sensor 6. The shell 1 is a member of a jacketed tube structure, the built-in axial inner tube 1.1 is centered, the main body of the outer tube wall is composed of a truncated cone and a cylinder, and the inner tube 1.1 at one end is a truncated cone The small end of the body, and the bundle segment of the cylinder at the other end is provided with threads to cooperate with the pipe joint 2 to form a positioning installation, and the inner tube 1.1 of the bundle segment end face ring of the outer tube wall of the tube shell 1 is alternately sealed and connected with 3 lead-in tubes 3 at equal intervals And 3 return pipes 4. The heat medium 5 is heat-conducting oil, and the heat medium 5 carries temperature to heat the shell 1. The inlet pipe 3 and the return pipe 4 th...

Embodiment 2

[0018] This embodiment is used for the manufacture of epoxy-based pultrusion mandrels of φ170mm. Because the product specification is larger than that of embodiment 1, the amount of rubber and alkali-free glass fiber consumed is more. The structure is the same as that of Embodiment 1, but the main technical parameters have been adjusted. For example, the diameter of the axial inner tube 1.1 built in the shell 1 is increased to φ28mm, the taper of the truncated cone is 1:5, and 6 inlet tubes 3 and 6 are configured. A return pipe 4, the thermal oil tubular heater under this configuration is similar to the application effect of embodiment 1, and the energy consumption is only 1 / 30 of the prior art.

[0019] The application of the invention has good economic and social benefits.

Embodiment 3

[0021] This embodiment is used for the manufacture of epoxy-based pultrusion mandrels with a diameter of φ200mm. Because the product specification is larger than that of Embodiment 1, the consumption of rubber and alkali-free glass fibers is more, although the thermal oil tubular heater used The structure is the same as that of Embodiment 1, but the main technical parameters have been adjusted. For example, the diameter of the axial inner tube 1.1 built in the shell 1 is increased to φ50mm, the taper of the truncated cone is 1:6, and 8 guide tubes 3 and 8 are configured. Root return pipe 4, the thermal oil type tubular heater under this configuration is similar to the application effect of embodiment 1.

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Abstract

The invention discloses a hot oil type tubular heater which comprises a tube shell, tube joints, leading-in tubes, return tubes, a heat medium and sensors, wherein the tube shell is in a jacket tube structure; an internally arranged axial inner tube is arranged in the middle; an outer tube wall and an inner tube are coaxially sheathed and both ends are hermetically connected with each other; the outer tube wall consists of a truncated cone and a cylinder; one end taking the inner tube as a beginning point is the small end of the truncated cone, and a beam segment of the cylinder at the other end is provided with a screw thread matched with the tube joints to form positioning installation; and annular inner tubes at the end surface of the beam segment of the tube shell are alternately and hermetically connected with the leading-in tubes and the return tubes at equal intervals. The heat medium forms a circular flow passage through the leading-in tubes and the return tubes, and the sensors are coaxially placed between any leading-in tube and adjacent return tube. The hot oil type tubular heater is simple in structure, quick and uniform to heat, so that no temperature difference exists between sizing material and alkali-free glass fiber inside a leading-in die cavity, and synchronous solidification of inner and outer layers is achieved. The hot oil type tubular heater is particularly suitable for producing epoxy pultrusion core rods with the diameters of 50 to 200mm.

Description

technical field [0001] The invention relates to a heater, in particular to a tubular heater with heat-conducting oil as a medium, which is used for heating rubber materials and alkali-free glass fibers for producing epoxy-based pultrusion mandrels. Background technique [0002] Epoxy-based pultrusion mandrel is a kind of composite insulating material. In addition to excellent insulating properties, this material also has the characteristics of high strength, heat resistance, cold resistance, mildew resistance, moisture resistance, and impact resistance. It is widely used in power devices. Applications. With the development of the power industry and the continuous improvement of the grid voltage level, higher requirements are put forward for the quality index of the supporting epoxy-based pultrusion mandrel, and the specifications demanded in the market are also increasing. Epoxy-based pultruded rods are made of epoxy resin, alkali-free glass fibers, catalysts and other raw ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C70/54B29C70/52
Inventor 黄剑锋夏友军夏友民葛广满
Owner 泰州华东绝缘材料有限公司
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