SU1702166A1 - Screened electromagnetic transducer - Google Patents

Abstract

The invention relates to a measuring and measuring technique and can be used to control the movement of hard-to-reach areas and for monitoring. The purpose of the invention is to increase sensitivity by increasing the shielding, test-winding properties - logging due to the fact that the screen electromagnetic converter contains a housing 1 with a groove 2, placed in the PIZU H-shaped magnetic core 3 with exciting 4 and testing 5 windings on the middle rod and measuring 7 and compensation 8 windings on the corresponding Between the legs of the magnetic circuit of the test winding WG 5 included controllable switch 9 is shifted tnos Tel'nykh axis coil 4 winding axis 7 in the direction of the working end og the number of turns N of the testing conditions winding vyrano N- (4, 5) n. where n is the number of turns of the exciting winding and A Pcnu the co-closeness of the testing i layout is chosen less resistance controlled, and the depth h of the groove is selected from the condition h (0 3-0 5) I where I is the length of the magnetic line 2 or% Al7 l C h | oh oh oh

Description

The invention relates to a measuring and control technique and can be used to control movement in hard-to-reach areas and for destructive control.

The purpose of the invention is to read the sensitivity by increasing the shielding properties of the test winding.

Fig. 1 shows a shielded electromagnetic converter in Fig. 2 — electric circuit.

A shielded electromagnetic transducer includes a housing 1 of electrically conductive non-magnetic material with a groove 2 on the working end placed in the groove 2 of the H-O2 magnetic conductor 3 of length I located on the middle of the magnetic conductor excites the coil 4 with the number of turns n and testing the O-MOTKV 5 coils of the last uniformly distribute 1 lena relative to the turns of the exciting winding 4, its axis is parallel to the axis of the exciting winding and is shifted relative to it in the direction away from the tori j6 transducer

The converter also contains the JMO rhythm winding 7 and the compensation / s winding 8, each each vmp, следовательно n hence the counter-included sections and placed on the branches of the magnetic circuit and converting the other branches of the magnetic interface to be controlled by the control unit. 9 Operational ends of the test thread Chih / ychuk N test winding selected h - catch N M-5) its resistance is less than the resistance of the controlled wave and the depth h groove is selected from the condition h (0 3-0 5) 1 Shielded this is an itnich eobrazovatel works Biennialized TYuM mode

8 measurement control controlled 1 key 9 closed Resistance of the testing winding 5 for eddy currents is large and its presence does not affect the density of eddy currents excited in the monitored object (not shown) The output voltage of the transducer depends on the properties of the monitored object located not relative to the properties of the object being monitored (not shown) as well as the stability of the transducer itself when the ambient temperature of time and other footers change

In the testing mode of the transducer, winding 5 through the key t 9 is closed nak to rto. Its conductivity increases many times and the perforation of the winding stays

LOOK LIKE ITEMS

a non-magnetic surface, which is interchangeably with the housing 1; the converter converts the converter from all sides and as a test winding 5 covers

NITROPROVODE 3 ONLY WITH ONE i S

the other side is laid on the bottom of the gas 2, then the field of the converter is redistributed into the internal region of the test winding b box and there is practically no mechanism for the converter and contour

WEATHER SURVEY

3 of this process, for example, DPMI S 3nptfl ° fmr, almost t-svy s ip ib j ipcr-bizizovatel v gzhyt golya itolol 5 days of correction - the current voltage 1 mode measured

To ensure efficacy. ty e re n ovoz t 1 estustruyusche | ebmot to nrob / o and e / i thanks | gnngnogo go i p rktiv-ioe

0 sopot / test winding dgpzh but be m south most of the siege of the control of the impedance class hh I p resistive mee - 1 istogo etypn e)

 R

O M I5V then f fm dt men1 shoni tempera

Turnstile bar (temperature exists on the actress to co-operate TRTI j ,, J) HI windings. Hespe-igi vypl | CHzn $ conditions - ci THBHje conpo willows

With the best tag winding | i less than i v3 о о i iс а, н хо

THOUGHT GHT | PJ JAOST L 1 L HLP-i 1YAH

ho (F / G i p.

In wr-ul Tjrt sgog g gh pnso sopro S .lbny g tig: usyuchei rif) i-ynr JB pogolb drt invs-peach i to i mechechu

H iper ,,; t; j | i

R + r) onst

0C, g 11 ,, and z gb im

FP I (m bath1 3ieKTpj "ihHTHun theorizer-lend y1 (s opnvi from j iOf", jonp bcw j j magnetic, and ri gaa with a pelvis on Poos-em of ocs -if ten

5 now in a magnet g, a loop of length I POI laid on it. Agnito wire excitation winding with PNP coil n rcht, pai) p. United units y4 coil winding tester / Yun o6r4oiKj i

0 controllable h and ych included between the heels of the tesla winding about tl and 4 in u y and, and with that, with the first thing you need, it is equipped with a compensation of the i and the measuring windings

5 ned1 to zhd ch hvidr pos selovat / novstra 1 about included CPKLHH magnetic conductor n H ufioajf k-irt i, t itm and TCTbHOvi oiotki paiHei4eHS HI branch of the fluoro conductor n (x to pd6oi butt of rlc section comp

windings are placed on other branches of the magnetic circuit, and the test winding is placed on the middle part of the magnetic circuit so that its coils are juxtaposed to the turns of the exciting winding, the axis is parallel to the psi exciting winding and is offset relative to it from the working end of the converter, the number turns N of the testing winding is selected from the condition N (4-5) n, its resistance is less than the resistance of the controlled key, and the depth h of the blade is 5 from the condition h- (0.3-0.5) 1.

Qua. 2

Claims (1)

Screen a shabby electromagnetic transducer containing a housing of electrically conductive non-magnetic material with a groove on the working end, p ·. - an I-valued magnetic circuit with a length I, located on the middle part of the magnetic circuit, an exciting winding with the number of turns n, a generator connected to an exciting winding, a testing winding and a controlled key connected between the ends of the testing winding, the coil. Part I with. what. in order to increase sensitivity, it is equipped with compensation and measuring windings made; '! each in the form of sections connected in series, the magnetic circuit is made H shaped. sections of the magnetic winding are placed on the branches of the magnetic circuit facing the working end of the converter, sections of the complex No. 762166 of the winding is placed on other branches of the magnetic circuit, and the testing winding is located on the middle part of the magnetic circuit so that its turns are evenly distributed relative to the turns of the exciting winding, the axis is parallel to the axis of the exciting winding and offset relative to it from the working end of the transducer, the number of turns N of the test winding is selected from the condition N = (4-5) η, its active resistance is less than the resistance of the controlled key, and the depth h of the groove is selected from the condition