CN2499161Y

CN2499161Y - Flexible medium frequency heating belt

Info

Publication number: CN2499161Y
Application number: CN 01234231
Authority: CN
Inventors: 姚宝玉
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-08-22
Filing date: 2001-08-22
Publication date: 2002-07-10
Anticipated expiration: 2011-08-22

Abstract

The utility model discloses a flexible medium frequency heat belt, which comprises a long spring used as a heating belt inner core frame. Multi-strand thin metal conducting wires are waved to be tubular metal conducting wires at the outside of the frame; the two ends of the metal conducting wires are provided with belt joints; the metal conducting wires and the belt joints are in socket and then are brazed; the inner diameters of the belt joint and the spring are the same; an anti-water leakage sealing layer is covered at the outside of the metal conducting wires; a high temperature thermal insulation layer is wrapped at the outside of the anti-water leakage sealing layer. The flexible medium frequency heating belt as electromagnetic coils are winded at the outside of heated pipelines and workpieces, medium frequency power supply heats in medium frequency to the workpieces through the flexible medium frequency heating belt. The utility model is the flexible medium frequency heating belt with inner water cooling and a smaller bending radius, good softness, convenient operation and repeated using for long time.

Description

Flexible heating in medium frequency band

One, technical field

The utility model relates to a kind of heating tape, relates to a kind of flexible heating in medium frequency band particularly.

Two, background technology

At present in the open air or the weld preheating of mobile construction erecting bed pipe welding seam, post weld heat treatment, the heat treated of metal processing piece and accessory assembling.The flame width of cloth that has commonly used is penetrated the heat conduction heating several method of heating, deep fat conduction heating, electric hot plate and heating wire.There is following shortcoming in this several method: 1, the heat efficiency is low; 2, firing rate is slow and temperature is wayward; 3, flame heat is prone to carburizing and plays the oxide layer phenomenon.

In fixing construction assembly shop, except that above several heating means, also has the heating of intermediate frequency electromagnetism.This method, heat efficiency height, the fast and easy temperature control system of firing rate, but because the electric current of solenoid is very big, plain conductor very easily generates heat and burns out.The employing copper pipe is made lead at present, cools off with water flowing in the pipe to guarantee the coil operation.At mobile construction, the assembly shop, because the length of pipeline is long and the outside dimension excursion is big, the physical dimension of metal works is irregular, there is following shortcoming in copper tube coil: 1, copper pipe is after inside/outside diameter size is determined, in order to guarantee to manage the unimpeded of interior cooling water, the minimum bend of copper pipe partly is subjected to restriction.2, the repeated flex of copper pipe ruptures easily.

Three, summary of the invention:

To be solved in the utility model, provide a kind of can repeated flex easy fracture not, have again than small-bend radius, can the water flowing cooling in the band.Adapt to the flexible heating in medium frequency band that intermediate frequency power supply uses.

The flexible heating in medium frequency band of above-mentioned requirements is provided, solves following technical problem:

1, the electric current of plain conductor own is very big, easily heating.

2, plain conductor adapts to the requirement of multiple frequency conduction.

3, require the heating tape to have flexibility preferably, repeated flex, not easy fracture.

4, the heating tape has less bending radius, adapts to the difformity workpiece.

5, heating tape and workpiece close together, the workpiece of high temperature are roasting bad with the heating tape easily.

In order to solve the technical problem of above existence, intend adopting following technical scheme:

1,, overcomes the heating problem of plain conductor, in order to guarantee the unimpeded effect of playing the cool metal lead of cooling water, play again that the heating tape is reached and have purpose than small-bend radius and flexibility with the way of inner water flowing cooling.Adopt long spring as core crab in the heating tape.

2, in order to guarantee that the heating tape has the multi-frequency of adaptation conduction and flexibility requirement, the heating tape plain conductor is formed by the braiding of multiply fine wire.

3, in order to guarantee that cooling water does not leak, increase high temperature resistant leakproof watertight seal in the plain conductor outside.

4, roasting bad in order to prevent the heating tape sealant by the high temperature workpiece, increase the high temperature insulating layer in leakproof watertight seal outside.

Adopted the flexible heating in medium frequency band of the later this utility model of above-mentioned technical scheme, had repeated flex, flexibility is good, the performance of inner energy water flowing cooling.This flexible heating in medium frequency band can after the inner water flowing, can heat workpiece after feeding electric current of intermediate frequency around the workpiece outside of different shapes and diameter.

Four, description of drawings:

Accompanying drawing 1, scratch domestic animal heating in medium frequency band partial schematic sectional view.

Accompanying drawing 2, flexible heating in medium frequency band, schematic cross-section.

Five, embodiment:

Referring to Fig. 1, Fig. 2, the flexible heating in medium frequency band of utility model comprises spring skeleton 1, plain conductor 2, leakproof watertight seal 3, high temperature insulating layer 4, belt lacing 5 is formed.

As shown in Figure 1, in order to guarantee the unimpeded of cooling water, make cooling water effectively to the cooling of plain conductor 2 and the flexibility of increase heating tape, do core crabs in the plain conductor 2 with spring 1, the spring pitch of spring 1 in winding process is greater than 2 times of spring wire diameters.

As shown in Figure 1 and Figure 2, spring 1 outside is woven into the plain conductor 2 of tubulose with the thin plain conductor of multiply, plain conductor 2 is to adopt the braiding of fine wire multi-layer ring shaped braiding method to form; In the braiding process, the helical angle of thin wire is greater than 45 °, reduces lead self induction reactance like this, has guaranteed the flexibility of plain conductor 2 again.Insert respectively in the plug wire groove of belt lacing 5 at the two ends of plain conductor 2, compresses the back and adopt the soldering welding.Prevent that the joint from influencing electric conductivity because of electrochemical reaction.For fixing spring 1 position in the heating tape, prevent to come off and guarantee the unimpeded of cooling water, spring 1 is identical with the internal diameter of belt lacing 5

As shown in Figure 1, after plain conductor 2 and belt lacing 5 processing welding well, apply leakproof watertight seal 3 in the outside of plain conductor 2, leakproof watertight seal 3 will be included the interface of belt lacing 5 with plain conductor 2, prevents to leak.The outside at leakproof watertight seal 3 wraps high temperature insulating layer 4, and high temperature insulating layer 4 will all wrap leakproof watertight seal 3, prevents that high temperature from baking bad leakproof watertight seal 3.

Claims

1, a kind of flexible heating in medium frequency band comprises spring, plain conductor, leakproof watertight seal, thermal insulation layer, belt lacing.It is characterized in that: do the interior core crab of plain conductor (2) with spring (1), with multiply fine wire woven tubular plain conductor (2) outside spring (1); The two ends difference socket joint of plain conductor (2) is in the wire casing of two belt lacings (5).At plain conductor (2) outside apposition one deck leakproof watertight seal (3); Wrap one deck thermal insulation layer (4) in leakproof watertight seal (3) outside.

2, according to claim 1, described flexible heating in medium frequency band, it is characterized in that: described spring (1) is identical with belt lacing (5) internal diameter.

3, according to claim 1, described flexible heating in medium frequency band is characterized in that: between described plain conductor (2) two ends and the belt lacing (5), and soldering welding behind the employing socket joint.