CN2507217Y

CN2507217Y - Singel terminal leading out wire electric heating pipe

Info

Publication number: CN2507217Y
Application number: CN 01262676
Authority: CN
Inventors: 殷飞
Original assignee: YANGZHONG TIANLI ELECTRIC EQUIPMENT CO Ltd
Current assignee: YANGZHONG TIANLI ELECTRIC EQUIPMENT CO Ltd
Priority date: 2001-09-11
Filing date: 2001-09-11
Publication date: 2002-08-21
Anticipated expiration: 2011-09-11

Abstract

Disclosed is an electrical heating pipe with single-end lead-out wires, which is applicable to all kinds of electric heaters, mould manufacturing fields and the like, where electrical heating pipes with double-end lead-out wires are not convenient to arrange. The center of a casing pipe is arranged with a long steel bar, the upper end of which is bended, leaded outside, and threads a series of cylindrical magnesium pipes with single holes, resistance wires are winded around the periphery of the magnesium pipes from up to down, the lower ends of the resistance wires are welded with the lower ends of the long steel bar while the upper ends are welded with the short steel bar whose upper end is leaded outside, thereby the long steel bar and the periphery resistance wires form a return circuit. The structure is easy to fill magnesia powder, the homogeneous dissipating heat of the resistance wires increases coefficient of heat conduction, thereby effectively reducing the temperature of the inner of the resistance wires, largely prolonging life time of the production, and improving electric property.

Description

Single-ended lead-out wire electric heating tube

Technical field

The utility model is the electric heating tube in the appliance field, and especially a kind of single-ended lead-out wire electric heating tube can be applicable to inconvenience fields such as the various electric heating appliances of both-end lead-out wire electric heating tube, mould manufacturing are installed.

Background technology

The single-ended lead-out wire electric heating tube that generally uses in the present society, be that the resistance wire that coiling is good penetrates in diplopore or the four hole circle cylindricality magnesium tube cells in advance, and resistance wire formed the loop, again the magnesium tube cell of putting on is put in the metallic sheath pipe, from protecting pipe one end two ends of resistance wire are directly drawn then.Irritate with the magnesium powder in all spaces in the protecting pipe, this product undergauge is made again.This single-ended lead-out wire electric heater internal heat conduction environment is abominable, and in process of production, the magnesium powder around the resistance wire is difficult to irritate real and inhomogeneous, make complexity, cause heat conduction bad, increased the resistance wire temperature inside, electric property is poor, and life of product is short, and efficient is low.

Summary of the invention

The utility model is that the single-ended lead-out wire electric heating tube that a kind of making is simple, rational in infrastructure, can increase the coefficient of heat conduction and useful life and raising product electric property will be provided.The technical scheme that adopts is: in the protecting pipe central authorities of single-ended lead-out wire electric heating tube, a upper end bending is set and draws outside long steel bar, and long steel bar interts in the cylindrical magnesium pipe of a string single hole, wind from top to bottom with resistance wire in magnesium pipe periphery, weld mutually with the lower end of long steel bar the resistance wire lower end, weld mutually with the short rod iron that draw outside a upper end upper end, thereby formed a loop by long steel bar and peripheral resistance wire.After adopting this programme, manufacturing process is simple, reduced cost, be convenient in pipe, fill magnesia powder, the all even resistance wire heat radiation of density that has guaranteed magnesia powder is even, has increased the coefficient of heat conduction, has reduced the resistance wire temperature inside effectively, thereby prolonged useful life of single-ended lead-out wire electric heating tube, improved the electric property of product.

Description of drawings

Fig. 1 is a sectional arrangement drawing of the present utility model.Among the figure: 1, lack rod iron 2, diplopore insulating lid 3, fluid sealant 4, pad 5, metallic sheath pipe 6, resistance wire 7, magnesia powder 8, long steel bar 9, the cylindrical magnesium pipe 10 of single hole, pad 11, the square magnesium pipe 12 of single hole centralized positioning, the square magnesium pipe of diplopore centralized positioning

Embodiment

With reference to Fig. 1, at first the long steel bar (8) with the top bending interts in the cylindrical magnesium pipe of a string single hole (9), winds from top to bottom with resistance wire (6) in magnesium pipe periphery, and resistance wire (6) lower end and long steel bar lower end are located to weld at pad (10); The resistance wire upper end is located to weld at pad (4) with the bottom of short rod iron (1), to lack the top bending of rod iron (1) and long steel bar (8) again and partly insert together in the square magnesium pipe of diplopore centralized positioning (12), and have the camber in a hole and long steel bar top bending part to adapt in the square magnesium pipe.The lower end of long steel bar is inserted in the single hole square magnesium pipe of centralized positioning (11), the back is put into above assembly in the metallic sheath pipe (5) again, fills magnesia powder (7) then between the space, and vibratory compaction, undergauge forms, and the top uses diplopore insulating lid (2), fluid sealant (3) to seal successively.

Claims

1, a kind of single-ended lead-out wire electric heating tube, its appearance has metallic sheath pipe (5), diplopore insulating lid (2) is used at the protecting pipe top successively, fluid sealant (3) is sealed, the pipe inner stuffing is magnesia powder (7), it is characterized in that: a upper end bending is set and draws outside long steel bar (8) in protecting pipe central authorities, and long steel bar interts in the cylindrical magnesium pipe of a string single hole (9), wind from top to bottom with resistance wire (6) in magnesium pipe periphery, resistance wire (6) lower end is located to weld mutually with the long steel bar lower end at pad (10), and the short rod iron (1) that the upper end is located to draw outside with a upper end at pad (4) welds mutually.

2, single-ended lead-out wire electric heating tube according to claim 1, it is characterized in that: be provided with the square magnesium pipe of diplopore centralized positioning (12) of the long and short rod iron in location in the pipe below the fluid sealant (3), and have the camber in a hole and long steel bar (8) top bending part to adapt in the square magnesium pipe.

3, single-ended lead-out wire electric heating tube according to claim 1 is characterized in that: the pipe inner bottom part is provided with the square magnesium pipe of single hole centralized positioning (11).