CN202063970U

CN202063970U - Pot type heated air circulation annealing furnace

Info

Publication number: CN202063970U
Application number: CN2011201722721U
Authority: CN
Inventors: 陈卫平; 唐红; 谢云岩; 朱麟; 李行兵; 王琼
Original assignee: HUNAN XINXIN CABLE CO Ltd
Current assignee: HUNAN XINXIN CABLE CO Ltd
Priority date: 2011-05-26
Filing date: 2011-05-26
Publication date: 2011-12-07
Anticipated expiration: 2021-05-26

Abstract

The utility model provides a pot type heated air circulation annealing furnace, which comprises a furnace body, a furnace pipe and a furnace cover. A sealing ring is arranged at the joint of the furnace pipe and the furnace cover. A blowdown pipe, an exhaust pipe and a motor are arranged on top of the furnace cover. The inner end of an output shaft of the motor extends into the inner side of the furnace cover and is connected with an impeller. The annealing furnace further comprises an electronic control system. The electronic control system comprises a thermocouple, an electric furnace tube, a temperature control meter, a temperature recorder and a frequency changer. A flow guiding device is further arranged at the bottom of the furnace cover and arranged below the impeller. The electronic control system enables a copper conductor to automatically control heating in annealing processes and enable the upper portion, the middle portion and the lower portion of the annealing furnace to be heated evenly. After annealing, the whole copper conductor electromechanical properties are even and stable, and the annealing time is greatly shortened.

Description

A kind of vexed pot type hot air circulation annealing furnace

Technical field

The utility model relates to a kind of annealing furnace, especially a kind of vexed pot type hot air circulation annealing furnace.

Background technology

Well formula annealing furnace commonly used at present, annealing is long heat-up time, and the annealing postcooling time is long, whole copper conductor is annealed to the cooling period and reaches more than 30 hour, and can not be temperature automatically controlled in annealing process, the upper, middle and lower inequality of being heated causes the electromechanical properties of product stable inadequately in the annealing furnace.

Summary of the invention

For solving the problems of the technologies described above, the utility model provides a kind of vexed pot type hot air circulation annealing furnace, and control heating automatically is heated evenly annealing furnace upper, middle and lower portion in the copper conductor annealing process, annealing back copper conductor electromechanical properties integral body is uniform and stable, and annealing time shortens greatly.

The technical solution of the utility model is: a kind of vexed pot type hot air circulation annealing furnace, comprise body of heater, flue, bell, the joint of flue and bell has sealing-ring, the bell top is provided with blowdown pipe, vapor pipe, motor, output shaft the inner of described motor go deep into bell inboard and with the impeller load, the utility model also comprises electrical control system, described electrical control system comprises thermopair, electric-furnace-tube, temp controlled meter, moisture recorder, frequency transformer, described inboard wall of furnace is welded with vertical steel pipe, three thermopairs be inserted in respectively vertical steel pipe on, in, the lower section, electric-furnace-tube is arranged on inboard wall of furnace body, is divided into three sections, respectively corresponding three thermopairs, temp controlled meter is connected thermopair with moisture recorder, frequency transformer is connected with motor, and described bell bottom also is equipped with guiding device, and guiding device is positioned at the impeller bottom.

For reaching better technique effect, in flue and bell, be provided with watercooling jacket near sealing-ring.

The utility model is mainly used in the particularly stress relief annealing of copper round wire and copper strap wire of copper conductor, and its technique effect is:

1) whole annealing process is carried out under the protection of rare gas element, can not sneak into oxygen in the flue and make the copper conductor surface oxidation, so the luminance brightness of the copper conductor of output is good.

2) electric machine control system can write down temperature curve, and according to the good heating curve control of temperature curve setting heating, annealing furnace upper, middle and lower portion is heated evenly, and the electromechanical properties of product are therefore stable.

3) motor relies on the frequency transformer speed control by frequency variation, and air-flow forms convection circulation from top to bottom through the guiding device transmission, and copper conductor is heated more fast evenly, has guaranteed quality product, has also shortened the annealed time.

4) be provided with watercooling jacket near the sealing-ring place in flue and the bell, can have cooled off, prolonged sealing-ring work-ing life sealing-ring.

When 5) flue cooled off in the pond, driven by motor impeller rotation made heat in the flue fully contact with cold water in the pond by the courage wall, has shortened the refrigerative time greatly, and copper conductor cools off the whole cycle and shortens to and have only about 12 hours from being annealed to.

Description of drawings

Fig. 1 is the utility model example structure synoptic diagram.

Fig. 2 is the utility model embodiment electrical control system figure.

Fig. 3 is the additional figure of the utility model embodiment.

Embodiment

The utility model is described in further detail below in conjunction with accompanying drawing.

As shown in Figure 1, present embodiment comprises body of heater 15, flue 9, bell 3, the joint of flue 9 and bell 3 has sealing-ring 4, bell 3 tops are provided with blowdown pipe 16, vapor pipe 6, safety valve 19, tensimeter 18, motor 5, be provided with drum 20 in the flue 9, output shaft the inner of described motor 5 go deep into bell 3 inboard and with impeller 8 loads, be provided with watercooling jacket 7 in flue 9 and the bell 3 near sealing-ring 4, the utility model also comprises electrical control system 14, described electrical control system 14 comprises thermopair 2, electric-furnace-tube 10, temp controlled meter 11, moisture recorder 13, frequency transformer 12, described flue 9 inwalls are welded with vertical steel pipe 17, three thermopairs 2 be inserted in respectively vertical steel pipe 17 on, in, the lower section, electric-furnace-tube 10 is arranged on the position of body of heater 15 inwall corresponding thermocouples 2, temp controlled meter 11 is connected thermopair 2 with moisture recorder 13, frequency transformer 12 is connected with motor 5, and described bell 3 bottoms also are equipped with guiding device 1, and guiding device 1 is positioned at impeller 8 bottoms.In the annealing process; be in sealed state in the flue 9; vapor pipe 6 drains air in the flue 9; to be full of rare gas element in the flue 9 by blowdown pipe 16 then; and regularly constantly replenish new protection gas and discharge contaminated rare gas element, the annealing process of copper conductor is carried out under protection of inert gas all the time.For preventing the sealing-ring 4 overheated aged situations that cause, in flue 9 and bell 3, also be provided with watercooling jacket 7 specially near sealing-ring 4, in annealing process, water coolant that watercooling jacket is 7 li and sealing-ring 4 carry out heat passage, effectively reduce sealing-ring 4 temperature, thereby reach the purpose that prolongs its work-ing life.

As shown in Figure 2, electric-furnace-tube 10 is placed in the body of heater 15, is divided into three sections of upper, middle and lower, and the temperature signal of three thermopairs 2 in upper, middle and lower of sampling respectively inputs to moisture recorder 13 and three temp controlled meters 11.Show the annealing furnace temperature curve by moisture recorder 13, temp controlled meter 11 adopts and divides temperature section control, sets every section temperature, automatic control heat-up time heating curve, and annealing furnace upper, middle and lower portion is heated evenly, and the electromechanical properties of product are therefore stable.Frequency transformer 12 is according to circumstances set the operating rate of motor 5, and air-flow transmits through guiding device 1, forms convection circulation from top to bottom, and copper conductor is heated more fast evenly, has guaranteed quality product, has also shortened the annealed time.

As shown in Figure 3, during the cooling of 21 li in the pond of

flues

9,8 rotations of motor 5 impeller make heats in the flue 9 fully contact with cold water in the pond by the courage wall, shortened the refrigerative time greatly, copper conductor shortens to and to have only about 12 hours from being annealed to cooling in the whole cycle.

The above, it only is the utility model preferred embodiment, so can not limit the scope that the utility model is implemented with this, i.e. the equivalence of doing according to the utility model claim and description changes and modifies, and all should still belong to the scope that the utility model patent contains.

Claims

1. vexed pot type hot air circulation annealing furnace, it is characterized in that: comprise body of heater, flue, bell, the joint of flue and bell has sealing-ring, the bell top is provided with blowdown pipe, vapor pipe, motor, output shaft the inner of described motor go deep into bell inboard and with the impeller load, also comprise electrical control system, described electrical control system comprises thermopair, electric-furnace-tube, temp controlled meter, moisture recorder, frequency transformer, described inboard wall of furnace is welded with vertical steel pipe, three thermopairs be inserted in respectively vertical steel pipe on, in, the lower section, electric-furnace-tube is arranged on inboard wall of furnace body, is divided into three sections, respectively corresponding three thermopairs, temp controlled meter is connected thermopair with moisture recorder, frequency transformer is connected with motor, and described bell bottom also is equipped with guiding device, and guiding device is positioned at the impeller bottom.

2. a kind of vexed pot type hot air circulation annealing furnace according to claim 1 is characterized in that: be provided with watercooling jacket in described flue and the bell near sealing-ring.