SU1010453A1 - Device for profile visual checking - Google Patents

Abstract

DEVICE FOR VISUAL; PROFILE CONTROL-; containing sensors installed along the profile and having measuring windings and a common field winding, a switch connected to the inputs with measuring windings, and a visualization bhük, characterized in that, in order to enable the profile of the gap between the edges of the pipe billet to be monitored, it is a wind tunnel, a differentiation unit connected between KOMMyTaTOfioM and a visualization unit, the measuring windings are placed on the magnetic core, and the excitation winding is made possible placement on the outer surface of the outer tube.

Description

4i recounted

& 0 The invention relates to the technical technique and can be used to control the profile of the gap between the edges of the billet. Devices are known that are used in setting up high-frequency welded mills and which allow determining the magnitude of the angle and the gap between the edges being welded. These include a transport type UT protractor, a measuring probe, and also a lead cast is used, which is obtained by rolling it between the edges of the tube billet 11 3 The disadvantages of such devices are the inability to determine the geometrical parameters of the current-to-tube-magnetic-conductor electromagnetic system during operation reproducibility of results is not high enough, depending on the qualifications of the staff. The closest to 13 invention is a device for visual control of a profile, which contains sensors installed uniformly along the profile and having a common excitation winding and measuring windings, a switchboard and a visualization unit connected to them. The sensors have movable ptiiii iiott plyyshyo cores in contact with the controlled surface C2. A disadvantage of this device is the inability to control the profile of the gap between the edges of the billet during their welding. The aim of the invention is to control the gap profile between the edges of the billet. The goal is achieved by the fact that a device containing sensors installed along PROFI / 1I and having measuring windings and a common field winding, a switch connected by inputs to measuring windings, and a visualization unit, is equipped with a magnetic conductor introduced into the inner tube, a differentiation unit connected between a switch and a visualization unit, the measuring windings are placed on the magnetic wire, and the field winding is arranged to be placed on the outer surface of the outer tubes. In the drawing, ene block diagram of an apparatus for visual inspection of the profile. Meter- Excitation winding 1 is located 1010 "532 on around pipe billet 2 with a gap 3-. When welding pipes, the inductor of the welding unit can be used as excitation winding 1. The magnetic core 4 is inserted into the billet 2. It houses the main measuring winding 5 and additional measuring windings 6 connected through the detector unit 7 to the inputs of the switch 8. The switch output is connected to the input of the division unit 9, the second input of which is connected through one of the detectors of the unit 7 detectors with a main measuring winding located under the excitation winding 1. The output of dividing unit 9 is connected to the input of differentiation unit 10, the output of which is connected to the input of visualization unit 11. The device works as follows. The current flowing through the winding 1 of the excitation creates a magnetic flux passing through the tubular billet 2 and through the magnetic conductor. Differential magnetic fluxes that lump two adjacent i-th and (. Additional measuring windings 6) are proportional to the size of the gap between the edges of pipe billet 2 in the (i + 1) -th segment. If the additional measuring windings 6 are often placed on the magnetic core 4, this difference can be considered approximately equal to the derivative of the distribution curve of the flow in the windings 6. The switch 8 sequentially connects the additional measuring windings 6 through the division block 9 to the differentiation block 10, where Radiators of differentiation of the magnetic flux distribution curve in additional measuring windings 6. The learned gap value is transmitted to the input of visualization unit 11. To eliminate the influence of magnetic flux oscillations excited by excitation winding 1, in block 9, the output signals of additional measuring windings 6 are divided by the signal the main measuring winding 5, which is proportional to the total magnetic flux generated by winding 1.

310101 534The proposed device allows the welding unit to work, so that the UPRoet can exercise visual control of its adjustment and control of the edges of the pipes being welded in the process. product quality.

/

X to XXXXXXXXXWXXN,

XXX

Y /

GHH

: A f: to A.% with "u zhzhzh" zhzhzh;

I

//// A fffffffff ff

UG

9

rff

Claims (1)

DEVICE FOR VISUAL PROFILE CONTROL; comprising sensors installed along the profile and having measuring windings and a common excitation winding, a switch connected to the inputs of the measuring windings, and a visualization unit, characterized in that, 'in order to be able to control the gap profile between the edges of the tube billet, it is equipped with a magnetic circuit introduced into the inner tube, differentiation unit included between the switch and the visualization unit, the measuring windings are located on the magnetic circuit, and the field winding is made with the possibility the placement on the outer surface of the outer pipe.