CN102401694A

CN102401694A - Temperature measuring device of heating furnace

Info

Publication number: CN102401694A
Application number: CN2010102797833A
Authority: CN
Inventors: 陈邱生
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-09-13
Filing date: 2010-09-13
Publication date: 2012-04-04
Anticipated expiration: 2030-09-13
Also published as: CN102401694B

Abstract

The invention discloses a temperature measuring device of a heating furnace, which comprises a hollow sleeve. A gas inlet pipe is linked to the surface of the sleeve, a venturi is inlaid into the front end of the sleeve, the rear end of the venturi is linked and communicated with the gas inlet pipe, quartz glass is disposed behind the venturi, and a temperature measuring device is fixed at the rear end of the sleeve. Therefore, the temperature measuring device can be used for measuring temperature of a workpiece to be measured through the quartz glass and the venturi, the gas inlet pipe on the sleeve can be used for injecting gas to generate a blow by the aid of the venturi, and affection of internal accumulated carbon of the venturi on temperature measuring accuracy can be avoided by the aid of the blow.

Description

The temperature measuring equipment of heating furnace

Technical field

The present invention relates to a kind of temperature measuring equipment of heating furnace, particularly a kind ofly can be automatically remove carbon elimination dirt, coal smoke, and then record the temperature measuring equipment of workpiece temperature accurately.

Background technology

Heating furnace general reference of the present invention is utilized the body of heater of high temperature to workpiece processing, and its field comprises steel plant, smelting and processing of metals factory, glass factory, brickkiln factory, ceramics factory, incineration factory or the like; This case is special again to be example with the glowing furnace in the Technology for Heating Processing.Quenching is that metal is heated to proper temperature equably, immerses chilling in water or the oil (or in air or in the cooling zone, cooling off) then rapidly, makes metal obtain a kind of operation of needed hardness.Workpiece must maintain specific temperature in the process of quenching, in the hope of obtaining impartial high temperature phase constitution, temperature too with deficiency, may cause the situation of organizing incomplete metamorphosis, the bad situation of product also can be aggravated; See also shown in Figure 1ly, in order to confirm the heating temperature of workpiece, the dealer then is provided with temperature measuring equipment 20 in the furnace wall of glowing furnace 10; This temperature measuring equipment 20 comprises the sleeve pipe 21 of a build-in in glowing furnace 10 furnace walls; Sleeve pipe 21 front ends embed a quartz glass 22; The rear end then sets firmly a thermal detector 23; This thermal detector 23 is generally selected the infrared thermometry device for use, and it is to utilize infrared ray that the radiation that absorbs is converted into heat energy, and the temperature variation transformation of data is become electronic signal and shows; By this, the infrared ray that thermal detector 23 sent can utilize the radiant heat energy temperature of infrared ray absorbing to see through the electronic signal demonstration, and then record the heating temperature of workpiece through quartz glass 22 corresponding to treating on the thermometric workpiece.This glowing furnace 10 is the essential methyl alcohol that adds in the process of operation, and methyl alcohol produces diatomic hydrogen molecule and carbon monoxide after decomposing gas provides thermal treatment required; But; When methyl alcohol provided the carburizing gas of high carbon element at dore furnace, this high carbon content will cause producing carbon dirt or coal smoke in the inside of body of heater, and attached on the spare part in furnace wall or the stove; This carbon dirt or coal smoke certainly also can quartz glass 22 attached to temperature measuring equipment on; The carbon dirt of these quartz glass 22 surface attachment or coal smoke will cause obstruction to ultrared penetrating, and make thermal detector 23 measured temperatures produce the margin of error, and this margin of error can adhering to and heal and become serious with carbon dirt or coal smoke; Therefore, this temperature measuring equipment 20 promptly got and cooperates the regular blowing outs of glowing furnace 10 to do the operation of burning cinder de-carbons after work a period of time, caused the reduction of production efficiency and caused the inconvenience of production run.

Summary of the invention

Technical matters to be solved by this invention is to the prior art deficiency, to provide a kind of and can remove carbon elimination dirt, coal smoke automatically, and then record the temperature measuring equipment of the heating furnace of workpiece temperature accurately.

For solving the problems of the technologies described above; The technical scheme that the present invention adopted is: a kind of temperature measuring equipment of heating furnace; This temperature measuring equipment comprises the sleeve pipe of a hollow, and the surface of this sleeve pipe is connected has draft tube, and this draft tube upper end is arranged with two gas input ports; This two gas input port injects air and nitrogen respectively, and two gas input ports are equipped with operation valve for the pilot-gas flow; This sleeve pipe front end embeds a Venturi tube, and makes the Venturi tube rear end be connected perforation with draft tube, and the gas that makes the draft tube input is by seeing off in the Venturi tube, and this Venturi tube rear side is provided with quartz glass, and this sleeve pipe rear end sets firmly a thermal detector.

Compared with prior art; The beneficial effect that the present invention had is: the present invention can see through quartz glass and Venturi tube and can treat thermometric workpiece calibration temperature; And two gas input ports of the draft tube on sleeve pipe upper end can supply to inject air and nitrogen respectively, make it produce one airflow and keep the inner clean cleaning of Venturi tube and reduce temperature in the pipe.

Description of drawings

Fig. 1 is the structural map of the temperature measuring equipment of known glowing furnace.

Fig. 2 is the planar configuration figure of the embodiment of the invention.

Fig. 3 is installed on the synoptic diagram of glowing furnace for the embodiment of the invention.

Label declaration:

10 glowing furnaces

20 temperature measuring equipments

21 sleeve pipes

22 quartz glasss

23 thermal detectors

30 temperature measuring equipments

31 sleeve pipes

32 draft tube

321 gas input ports

322 gas input ports

323 operation valves

33 Venturi tubes

34 quartz glasss

35 thermal detectors

40 glowing furnaces.

Embodiment

Can be for the effect that makes structure of the present invention and reached more clearly by public understanding, cooperate the preferred embodiment explanation shown in graphic now as follows.

See also the constructed embodiment synoptic diagram of the present invention that Fig. 2 illustrates.The present invention is mainly a temperature measuring equipment 30; It comprises the sleeve pipe 31 of a hollow; The surface of sleeve pipe 31 is connected to be had draft tube 32, these draft tube 32 upper ends more to be arranged with two gas input ports, 321,322, two gas input ports 321,322 to be equipped with operation valve 323 for the pilot-gas flow; These sleeve pipe 31 front ends embed a Venturi tube 33; And make Venturi tube 33 rear ends be connected perforation with draft tube 32; The gas of draft tube 32 inputs can be by seeing off in the Venturi tube 33, and these Venturi tube 33 rear sides are provided with quartz glass 34, and sleeve pipe 31 rear ends then set firmly a thermal detector 35.

Above-mentioned Venturi tube 33 is tapered tubes that section changes, and gas stream promptly can produce pressure differential because of sectional area changes through Venturi tube 33, and this pressure differential then is reflected at the flow velocity of gas, makes can accelerate through the gas flow rate of Venturi tube 33.And

Quartz glass 34 is the extraordinary industrial technology glass made from silicon dioxide, and it has physics, chemical properties such as good high temperature resistant, corrosion-resistant, light transmission, insulating property.This thermal detector 35 utilizes infrared ray that the radiation that absorbs is converted into heat energy, and the temperature variation transformation of data is become the utensil of electronic signal demonstration.

See also shown in Figure 3ly, the sleeve pipe 31 of temperature measuring equipment 30 of the present invention can be embedded in the furnace wall of glowing furnace 40, and inner embedding of sleeve pipe 31 front ends has Venturi tube 33, and Venturi tube 33 rear sides are provided with quartz glass 34, and sleeve pipe 31 rear ends then set firmly a thermal detector 35; By this; The infrared ray that thermal detector 35 is sent can see through quartz glass 34 and Venturi tube 33; And, utilize infrared ray that the radiation that absorbs is converted into heat energy, and become electronic signal to demonstrate the temperature of workpiece the temperature variation transformation of data corresponding on the workpiece in the glowing furnace 40.In addition, these sleeve pipe 31 uplinks are connected to draft tube 32, and draft tube 32 upper ends are arranged with two gas input ports 321,322 again; Two gas input ports 321,322 can supply to inject air and nitrogen respectively (in preferred embodiment; This nitrogen is often opens shape, and the nitrogen of input 0.6m/hr 0.8m/hr, and air is then imported with the tolerance of per 2 hours 50cc); Be input in the Venturi tube 33 by nitrogen; The accumulation of temperature in can stopping to manage, and remove the uncombined carbon in the Venturi tube 33, make the unlikely distortion of temperature survey; Again; When the Venturi tube 33 in the air entering sleeve pipe 31; Because Venturi tube 33 can make the gas flow rate that passes through accelerate, the air of succeeding input blows strength by producing one through Venturi tube 33, utilizes this to blow power and can avoid the inner carbon distribution of Venturi tube to influence the temperature survey accuracy.

By being that the structure of this case embodiment can reach following advantage:

But workpiece temperature in the 1 continuous coverage stove, and link record and the pattern analysis that register is made temperature, guarantee workpiece quality;

2, problems such as blanket gas, carbon distribution can not influence thermometric accuracy in the stove;

3, utilize the input of nitrogen and air, make it get rid of the carbon distribution problem that carburizing gas caused automatically.

Though the enforcement of this case is specially adapted to glowing furnace, and especially as legend, only, the enforcement of this case is not as restriction, and it again can be adaptable across relevant high temperature stove and accessorys such as multiple heat-treatment furnace, calciners.In graphic, some lines, ratio, component thickness etc. maybe be by exaggerative clear in the hope of showing; And used some component Name in this case instructions only is to name in order to narrate embodiment, can not limit this case with its meaning of word.Being only notebook invention described in this case instructions for presenting the embodiment or the embodiment of the technological means that adopted of dealing with problems, is not the scope that is used for limiting this case patent working.

Claims

1. the temperature measuring equipment of a heating furnace; This temperature measuring equipment comprises the sleeve pipe of a hollow; It is characterized in that the surface of this sleeve pipe is connected has draft tube, this draft tube upper end is arranged with two gas input ports; This two gas input port injects air and nitrogen respectively, and two gas input ports are equipped with operation valve for the pilot-gas flow; This sleeve pipe front end embeds a Venturi tube, and makes the Venturi tube rear end be connected perforation with draft tube, and the gas that makes the draft tube input is by seeing off in the Venturi tube, and this Venturi tube rear side is provided with quartz glass, and this sleeve pipe rear end sets firmly a thermal detector.