CN1003984B

CN1003984B - Heating tool for heating pipe connector sleeves

Info

Publication number: CN1003984B
Application number: CN85101945.5A
Authority: CN
Inventors: 格雷·肯尼思; 塔克·艾伯特
Original assignee: Antex Electronics Ltd
Current assignee: Antex Electronics Ltd
Priority date: 1985-04-01
Filing date: 1985-04-01
Publication date: 1989-04-26
Also published as: CN85101945A

Abstract

One is used for heating tube adapter sleeve, fusing be pre-installed in cover or after add the welding agent going thereunto so that grip is fixed to the instrument on pipe.Comprise a pair of hinged arm (1), two arms at one end have an electrical heating elements (3) with identical one end, be arranged to thermal conductance relation with head (4), head (4) is made up of sector grooves (4a), and two arms are movable between the two positions, one of them position, sector grooves (4a) is separated, and another position, sector grooves (4a) can abut against together around pipe connector sleeves (C), to heat is fed on it.

Description

Heating tool for heating pipe connector sleeves

What the present invention relates to is an instrument that is used for heating a pipe connector sleeves, so that the welding agent in fusing cover just can be fixed on pipe by grip after this welding agent solidifies, to guarantee a fluid-tight joint.Solid welding agent can be put in advance to cover or be added to pipe porch, when flowing in it by capillarity after fusing.

The common practice is at the scene those pipe heating with blowtorch, heat gun or torch.But, use flame or heat gun heating collar usually to cause the burning of Adjacent Buildings.If when work must be carried out in an incendive environment, be also difficulty and inconvenient at restricted local blowtorch or the torch of using.From the flame of blowtorch or the torch also other end of grip heating together, therefore also can pipe connector sleeves be fixed to one end heating on pipe, cause that stiff end takes off or make its leakage.

So just need a kind of instrument, overcome the shortcoming of above-mentioned use blowtorch or torch heating tube adapter sleeve.

German patent specification 2830016, british patent specification 480374 and French Patent (FRP) specification 1151254 all disclose various hand tool, and this instrument has electric heating pincers, around tube grip, for melting welding agent, thereby forms joint.Obviously these existing instruments are not suitable for rapidly and easily exchange the heating element of pincers, furtherly, and because they are quite heavy shapes, so can not operate in the restriceted envelope on pipe.

According to the present invention, an instrument that is used for heating tube adapter sleeve, so that fusing put in advance cover or after the welding agent of adding up, grip is fixed on pipe, comprise a pair of chain connection arm, there is an electrical heating elements one end of each arm and identical one end, this electrical heating elements and head part are arranged to thermally conductive relation, this head part is made a sector grooves, two arms are movable between the two positions, one of them position, sector grooves is separated, and another location, sector grooves can abut against together around pipe connector sleeves, to heat is fed on it.The invention is characterized in: each head has detachable cylinder, by an axle slidably and be independent support, axle comprises the electrical heating elements described in, forms each sector grooves from the arc teat of the free end lateral offset of cylinder.

Two arms can be at one end with a chain connection together, this hinge comprises that becomes overall flexibility or an elastomeric joint with two arms, its mode is resemble special description in UK Patent Application 8328338.

But the same form of two the most handy scissors of arm or pliers is by the pivotally connected centre in end.

One embodiment of the present of invention have been described in the accompanying drawings, wherein:

Fig. 1 is an end view of whole instruments;

Fig. 2 and Fig. 3 are the perspective views of interior module, are fitted together two arms of formation instrument with another module;

Fig. 4 is the profile of Fig. 2 along A-A line;

Fig. 5 is the profile of Fig. 2 along B-B line;

Fig. 6 is the profile of Fig. 3 along C-C line;

Fig. 7 is the longitudinal sectional drawing by heating element;

Fig. 8 and Fig. 9 are the profiles that uses two kinds of multi-form instruments of the present invention.

Referring now to accompanying drawing,, instrument consists essentially of, as shown in Figure 1, the same arm of an object pliers of being made by molded heat resistanceheat resistant, insulating material, two arms link together rotationally with pin 2.One end and identical one end at each arm are filling an element 3, to heat a dismountable head part 4, the semicircular ring connected in star 4a that in fact this head part 4 equals to connect pipe box external diameter by radius forms, heat be fed into that fusing in this head part has packed in cover or after be added to the welding agent of its end.Fig. 1 also shows three core feed cables 15, and this feed cable 5 reaches in two arms 1, is connected to each of two heating elements by a terminal block.

As shown in Fig. 2,3 and 4, there is a socket 1a one end of each arm, to pack one end of heating element 3 into, and the inside of each arm is made up of crinoline and a sealing box 1b, to make terminal block (not shown) location.Head part 4 can be had different grooves by another but the identical head part of overall dimension is exchanged, and connects with the pipe that is suitable for different-diameter.

With reference now to Fig. 7,, each heating element comprises a ceramic bobbin 5, is being wound around the resistance coil 6 causing with the lead-out wire 7 of pure nickel or other metal on it.Coil 6 use aluminum pipes 8 are wrapping, and the latter is installed in a stainless steel or other metal pipe 9, and it is transmitted to head part 4 heat.Pipe one end of 9 is being sealed by socket 10, and the other end has a ground connection pin 11 and be supported on one that made by insulating material and have an attaching and sell in the cover 12 in 11 holes.

This cover 12 can be made ripple on the outer surface, and as shown in Figure 1, to install to after impelling it cooling on the socket 1a of arm 1, this socket 1a is drilled to suitable hole, divides to pack the teat of heating element into.As shown in Figure 1, each head part 4 has a tubular axle, and insert in it slidably the outer end of pipe 9.

If while needs, this instrument can be equipped a switch selectively, a variable temperature control circuit and a connection display.Can also equip a protective device and cover, to it can be placed on another surface that may produce cause thermal damage safely.Also can provide a mechanism, to help its replacing in the time that head part 4 is awfully hot.

A device can be provided, in the time that it slips over element, can automatically tool heads part be arranged in a suitable plane and instrument can be made to the element that adapts to various different wattages, to operate under various different voltage.

By transformation temperature with by changing the head part of an applicable shape that can infinitely change, instrument can be heat supply to the pipe of any section configuration, no matter this pipe is by metal or by plastic, the instrument of can imagining also can be for welding synthetic material rope, welding waveguide flange and melting chilling pipe.

Conventionally, the heating-up time scope that is raised to working temperature by low temperature is 30 seconds to 3 minutes, and complete weld metal connect time be less than for 10 seconds.

In use instrument, at two long metal pipe P(Fig. 8 and 9) between form a welding point, in the time that electric current leads in tool heads part 4, heated by corresponding heating element.The handle portion of two arms 1 has tendency clamped and that be mutually close together conventionally.Therefore make tool heads part that tube connector is embraced together.Tube connector can be so-called Yorkshire formula, as shown in Figure 8, comprises a circular cover C, has the annular groove of a radially inner storage welding agent S in it.In the time using such tube connector, each headstock 4a of place will arrange an inside semi-circular recesses 4b, and the part cover within the scope of headstock will be installed in groove 4b.Another kind of form as shown in Figure 9, the butt end of two pipe P is by a generic connectivity cover D bridge joint, and heat is supplied to and puts by means of aforesaid instrument, is placed on pipe porch with a welding rod T simultaneously.The heat fusing welding agent of being supplied with by instrument.Welding agent moves by the capillarity in cover, and solidifies thereon and seal up connector.Like this, the connector no matter being welded into by any mode of the present invention can provide a kind of sealing, stops liquids and gases outflow.

Claims

1, one is used for the instrument of heating tube adapter sleeve C; for melt pack in advance in it or after be added to welding agent S.T above; to it is fixed on pipe P; comprise a pair of articulated jib 1; one end of each arm and same side have one can be with electrically heated element 3; this element with there is sector grooves 4a 4 be arranged to thermal conductance relation; arm 1 is movable between the two positions; one of them position; sector grooves 4a separates; and another position, sector grooves 4a can abut against together around pipe connector sleeves C, to heat is fed on it; It is characterized in that: each head has dismountable cylinder, by an axle slidably and be independent support, axle comprises the electrical heating elements described in, forms each sector grooves from the arc teat of the free end lateral offset of cylinder.

2, according to the instrument of claim 1, it is characterized in that: each heating element axle is supported on the socket of an articulated jib end, at adjacent outlet place, around outer radiation fins 12.

3, according to the instrument of claim 1 or 2, it is characterized in that: the free end of each head is tapered towards its arc teat.

4, according to the instrument of claim 1 or 2, it is characterized in that: a cable 5 extends through the handle portion of one of them arm 1, and be connected to terminal box 1b, electric current is provided on the resistance heating coil 6 in the heating element 3 on arm 1.

5, according to the instrument of claim 3, it is characterized in that: a cable 5 extends through the handle portion of one of them arm 1, and be connected to terminal box 1b, electric current is provided on the resistance heating coil 6 in the heating element 3 on arm 1.