Tube-in-tube fuel warmer prepared with positive temperature coefficient high-molecular material

A warmer and sleeve-type technology, applied in fuel heat treatment devices, charging systems, mechanical equipment, etc., can solve problems such as heat-generating materials and electrode sealing difficulties

Inactive Publication Date: 2003-10-08
CHINA PETROCHEMICAL CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of this invention is to use PTC heating sleeve to heat the whole oil suction pipe, and the inside and outside of the heating pipe immersed in oil is covered with metal pipe or plastic

Method used

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  • Tube-in-tube fuel warmer prepared with positive temperature coefficient high-molecular material
  • Tube-in-tube fuel warmer prepared with positive temperature coefficient high-molecular material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] This embodiment consists of figure 1 The nine parts shown in the figure are composed of: sealing box 1 is made of high-density polyethylene, potting material 2 is epoxy resin plus curing agent, insulating layer 3 is made of polyester film with a thickness of 0.1mm, and oil barrier layer 4 is made of wall thickness of 0.4mm thin-walled stainless steel pipe, the oil suction pipe 5 is a commercially available metal oil suction pipe with an outer diameter of Φ10mm, the electrode terminal 6 is a commonly used copper terminal, the screw diameter is Φ3mm, the fixing part 7 is made of carbon steel, and the thread The diameter is Φ32mm, the heat pipe 8 adopts a PTC heat pipe with a self-limiting temperature of 90°C, the inner diameter of the pipe is 11.5mm, and the wall thickness is 1.5mm. The ampere can completely melt the solidified diesel oil at -33°C in the oil suction pipe within 5 minutes.

Embodiment 2

[0019] This embodiment consists of figure 1 In addition to the insulating layer 3, it consists of eight parts: the oil separation layer 4 is a polyester tube, and the oil suction pipe 5 is an oil-resistant plastic oil pipe for commercially available automobiles, with an outer diameter of Φ10mm. No insulating layer, close contact. The heating pipe 8 adopts a PTC heating pipe with a self-limiting temperature of 85°C. The inner diameter of the heating pipe is 11.2mm, and the wall thickness is 1.4mm. The fixing nut 7 is made of polypropylene material, and the rest are the same as in Example 1. The bottom oil suction pipe 5 and the fixing nut 7 are welded and connected with the oil barrier layer 4 respectively. In this embodiment, the voltage used is 24 volts and the current is 0.8 ampere, which can completely melt the solidified diesel oil at -33° C. in the oil suction pipe within 7 minutes.

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Abstract

The present invention relates to an automatic heating thermostatic device for fuel vehicle, in particular, it relates to a heating thermostatic device for diesel vehicle. Said invention adopts PTC sleeve to heat the whole fuel sucking pipe, and the inside and outside of the heating pipe soaked in the fuel are covered with metal pipe or plastic pipe, and its bottom end is welded and sealed. Said automatic heating thermostatic device is identical to the ordinary fuel sucking pipe in installation, i. e. uses the screw thread to make connection so as to solve the problems of only heating fuel sucking pipe part and difficult in sealing of heating material and electrode. The adoption of said automatic heating thermostatic device can completely melt the condensated diesel oil being in fuel sucking pipe within few minutes.

Description

technical field [0001] The invention relates to an automatic heating and constant temperature device for a fuel vehicle, in particular to a heating and constant temperature device for a diesel vehicle, belonging to the field of cold start of motor vehicles. Background technique [0002] In the cold season, the solidification of certain components in fuel oil (especially diesel oil) seriously affects the starting and normal operation of the fuel engine. One of the important reasons is the wax deposition and cold resistance of the oil suction pipe in the oil storage tank. At present, there are many patents at home and abroad that use positive temperature coefficient (PTC) elements to make heating devices to solve the problem of wax deposition in oil suction pipes in fuel tanks under low temperature conditions, such as CN95210992, CN95221563.2 and US4881508. These patents all are to install the heating device that is heating element by PTC sheet at ...

Claims

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Application Information

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IPC IPC(8): F02M31/125
Inventor 王剑谭洪生洪英李丽迟丽平
Owner CHINA PETROCHEMICAL CORP
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