Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Spiral Bolt Electric Heating Rod

An electric heating rod and helical technology, which is applied in the field of heating devices, can solve the problems of limited heating objects and extra stress on the occlusal position, and achieve the effect of avoiding heating and avoiding heating expansion.

Active Publication Date: 2019-03-05
国能浙江北仑第三发电有限公司
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention solves the defect that the existing electric heating rod for bolts is linear, can only be adapted to heating straight bolts, and the heating objects are limited, and provides a spiral electric heating rod for bolts, the heating section is helically wound by a heating belt , the heating tape can be bent after helically wound, in addition to heating the straight bolts, it can also heat the bent bolts
[0006] The present invention also solves the defect that the existing bolt electric heating rod will contact with the hole wall of the bolt inner hole in actual use, causing the outer occlusal part of the bolt to be heated, causing additional stress to occur at the occlusal part, and provides a spiral bolt Electric heating rod, the heating section is spirally wound by heating tape, and the part of the spiral winding is added with a support body, so as to control the reasonable gap between the heating section and the wall of the inner hole of the bolt to prevent contact, thereby avoiding the heating of the outer occlusal part of the bolt

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Spiral Bolt Electric Heating Rod
  • Spiral Bolt Electric Heating Rod
  • Spiral Bolt Electric Heating Rod

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Embodiment 1: A kind of helical bolt electric heating rod (see figure 1 figure 2 ), including the front insulation section 4, the heating section and the rear insulation section 7 connected in sequence.

[0023] The electric heating rod is cylindrical as a whole, the maximum outer diameter of the front insulation section is larger than the outside diameter of the heating section, the maximum outside diameter of the rear insulation section is larger than the outside diameter of the heating section, and the maximum outside diameter of the front insulation section and the rear insulation section is the same as that of the bolt 1 The apertures of the inner hole 2 match. The front heat insulation section has a front positioning end, and the front positioning end is a round head. A connecting thread 8 is arranged on the rear heat insulation section, and an inner thread is arranged on the inner wall of the hole of the bolt inner hole, and the connecting thread and the inner...

Embodiment 2

[0026] Embodiment 2: A spiral bolt electric heating rod, including a front insulation section 4 , a heating section and a rear insulation section 7 connected in sequence.

[0027] The electric heating rod is cylindrical as a whole, the maximum outer diameter of the front insulation section is larger than the outside diameter of the heating section, the maximum outside diameter of the rear insulation section is larger than the outside diameter of the heating section, and the maximum outside diameter of the front insulation section and the rear insulation section is the same as that of the bolt 1 The apertures of the inner hole 2 match. The front heat insulation section has a front positioning end, and the front positioning end is a round head. A connecting thread 8 is arranged on the rear heat insulation section, and an inner thread is arranged on the inner wall of the hole of the bolt inner hole, and the connecting thread and the inner thread are screwed together. The outer d...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The present invention relates to a spiral bolt electrical heating rod. The defects are solved that a current electrical heating rod is linear-shaped, is only suitable for heating a linear-shaped bolt and the heating objects are limited. The spiral bolt electrical heating rod comprises a front heat insulation segment, a heating segment and a back heat insulation segment; the heating segment is formed by spirally winding heating bands, a support body is arranged at the heating bands and the portion adjacent to the winding of the heating bands, and the maximum external diameter of the support body is larger than the maximum external diameter of the spiral winding of the heating bands; the external diameter formed by the spiral winding of the heating segment is smaller than the aperture of the bolt bore, and the maximum external diameter formed by the spiral winding of the support body is adaptive to the bolt bore. Heating bands may be bended after spiral winding so as to adapt the heating requirement of bended bolts, a support body separate the outer wall of the heating segment from the wall of the bolt bore to prevent the heating segment from directly contacting the wall of the bolt bore, so that the outer occlusion portion of the bolt is prevented from being heated and the flange portion of the bolt is prevented from being heated and expanded.

Description

technical field [0001] The invention relates to a heating device, in particular to a helical bolt electric heating rod capable of heating and bending the bolt. Background technique [0002] The bolt heating rod is a heater for heating when the bolts of the steam turbine are assembled and disassembled. For conventional electric bolt heating rods, the design mainly considers the matching between the diameter of the heating rod and the inner hole of the bolt. Generally, the gap is 0.5-1.0mm. The heating rod is divided into three parts. The length of the lower part mainly considers insulation to prevent arc phenomenon due to the too close distance between the resistance wire and the metal shell at the end; the middle part of the heating rod is the heating section, and the length of the heating section is to meet the heating needs of bolts of different lengths; The upper part of the rod is a non-heating section, which mainly prevents heat transfer and prevents the temperature at ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H05B3/42
CPCH05B3/42
Inventor 周江陈立强周轶喆李国明谢澄项国东
Owner 国能浙江北仑第三发电有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com