CN2482697Y

CN2482697Y - Enamel-covered wire on-line detecting apparatus

Info

Publication number: CN2482697Y
Application number: CN 01234981
Authority: CN
Inventors: 梁月明; 汪仁煌
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-04-28
Filing date: 2001-04-28
Publication date: 2002-03-20
Anticipated expiration: 2011-04-28

Abstract

The utility model relates to an online enamel-wire detecting device, which comprises a control cabinet, a control case, a high voltage generator, a leakage current detecting device, a non-contact high voltage detecting head, a microcomputer measuring and controlling system, etc. wherein, the casing of the high voltage detecting head is made of high insulation material; the interior of the casing is provided with a high voltage electrode. While the utility model is used for measuring and monitoring the defect occurrence in the enameling or coating process of winding wires, the detecting sample needs not to contact with the high voltage detecting head; rather, the microcomputer measuring and controlling system automatically analyzes and determines the defects thereof according to the corona cloud changes produced when the sample passes by the high voltage detecting head in a non-contact way and also to the linear velocity of the enameling machine.

Description

The enameled wire on-line measuring device

The utility model relates to the enameled wire on-line measuring device of a kind of online detection winding wire defective in bag lacquer or coating process, and is particularly a kind of by micro-processor controlled non-contacting corona discharge type enameled wire on-line measuring device.

Stipulate according to IEC60851 (1996) and GB4074 series standard: the film integrity of winding wire is to represent by the detected pinhole number in electrical test loop with the unit length winding wire.Each manufacturer and applying unit all are to use the measuring instrument of contact type measurement film integrity, when using this measuring instrument, the 30m that gets a volume winding wire tail end is long as sample, making it hold the pinhole number that liquid, liquid metal or metal wheel are measured this sample by the electrolyte that has applied certain voltage, is the film integrity that characterizes this volume winding wire with the pinhole number.Its deficiency is: 1, no matter how long this winding wire has, and can only get the part of its tail end and measure, and the film integrity that characterizes this winding wire with the measurement result of this tail end 30m winding wire obviously is very incomplete; 2, sample is measured through the metal wheel that has applied certain voltage in accordance with regulations, but sample is a contact with contacting of metal wheel, does not contact with metal wheel as the position that pin hole is arranged on the sample, and this measuring instrument just can not surveyed the pin hole that in fact exists on the sample; Denmark has produced the device that the non-contacting corona discharge type high pressure of a kind of usefulness detection head carries out the online detection of enameled wire, its deficiency is: it can only be installed on a kind of enamelling machine of model, the quantity that can only show pin hole, can not differentiate defects property according to the different linear velocities of enamelling machine, the film integrity that correlation parameter is measured the winding wire of different model and specification can not be set according to the examination criteria of winding wire, and its detection head is a circular port, increased the difficulty of threading when producing enameled wire, inconvenient operation.

The purpose of this utility model provide a kind of winding wire that can be applicable to various model enamelling machines and coating machine, various conductor nominal diameter and shape, with microcomputer control system carry out continuously, automatically, in all directions non-contact type on-line measurement, monitor the defective on whole length of its winding wire in bag lacquer or coating process and the enameled wire on-line measuring device of defect property thereof.

The utility model is design like this: it comprises switch board 1, high pressure detection head 6, microcomputer control system 22, wherein in the switch board 1 control box 2 is housed; Power supply transforming circuit 7 is housed in the control box 2, the transforming circuit 8 that boosts, high-pressure generating circuit and leakage current testing circuit 9; The shell of high pressure detection head 6 is made by high insulating material, high-field electrode be sealed in the inside, high pressure detection head 6 and be sealed in its inside high-field electrode be provided with notched circular port, high pressure detection head 6 is installed on enamelling machine or the coating machine; Be electrically connected between power supply transforming circuit 7, the transforming circuit 8 that boosts, high-pressure generating circuit and leakage current testing circuit 9, microcomputer control system 22, the high pressure detection head 6.

The utlity model has following excellent characteristics: 1, the utility model can be applicable to the enamelling machine or the coating machine of various models and different bag lacquers or coating speed, can carry out on-line measurement to the enameled wire or the coating line of various conductor nominal diameters or other shape; 2, can according to difference really the linear velocity of enamelling machine or coating machine the film integrity that correlation parameter is measured winding wire automatically is set; The extension position and the defective generation time of each defective this axis of living in that exists on 3, can the instant playback detected winding wire, and the defective that can differentiate winding wire according to the linear velocity of enamelling machine is a pin hole or a section is revealed copper nude line; 4, can keep and print whole measurement results; 5, made by high insulating material because of the shell of high pressure detection head, at its inside sealed high pressure electrode, tested winding wire does not all contact with high-field electrode with operating personnel, has guaranteed operating personnel's safety; 6, the high pressure detection head is provided with notched circular port, when winding wire is carried out online detection, need not change the threading circuit and the number of times of winding wire, handled easily; 7, a cover microsystem can be measured many winding wires simultaneously.

Introduce concrete structure of the present utility model in detail below in conjunction with embodiment and accompanying drawing thereof.

Fig. 1 is the outside drawing of the utility model embodiment switch board;

Fig. 2 is the outside drawing of control box;

Fig. 3 is the cut-away view of Fig. 2;

Fig. 4 is the outside drawing of the high pressure inspection head of the utility model embodiment;

Fig. 5 is the outside drawing of the high-field electrode of Fig. 4 inside;

Fig. 6 is the high-pressure generating circuit synoptic diagram of the utility model embodiment;

Fig. 7 is the leakage current testing circuit synoptic diagram of the utility model embodiment;

Fig. 8 is the microcomputer control system synoptic diagram of the utility model embodiment;

Embodiment:

As Figure 1-3, the utility model embodiment comprises switch board 1, control box 2, high pressure detection head 6, microcomputer control system 22, four control boxs 2 are housed in the switch board 1, the panel of control box 2 is provided with power switch 3, relay indicating light 4, high pressure extension line binding post 5, power supply transforming circuit 7, the transforming circuit 8 that boosts, high-pressure generating circuit and leakage current testing circuit 9 are installed in the inside of control box 2, are electrically connected between power supply transforming circuit 7, the transforming circuit 8 that boosts, high-pressure generating circuit and leakage current testing circuit 9, microcomputer control system 22, the high pressure detection head 6.

High-pressure generating circuit as shown in Figure 6, comprise sample circuit 10, standard negative voltage generating circuit 11, error amplifying circuit 12, pulse width modulation circuit 13, multivibrator 14, booster circuit 15, genotron 16 etc., export high pressure to high pressure detection head 6 by genotron 16; High pressure detection head 6 is shown in Fig. 4-5, and its shell is made with high insulating material, and high pressure detection head 6 and the high-field electrode centre that is sealed in the high insulating material are provided with notched circular port; Fifth wheel 27 is installed on the fifth wheel before the high pressure detection head 6, and the wheel week of fifth wheel is provided with the light groove.

Each control box and high pressure detection head can detect a winding wire of enamelling machine or coating machine, and the user can install the quantity of control box and high pressure detection head as required.

Its leakage current testing circuit as shown in Figure 7, it comprises I/V translation circuit 17, voltage follower 18, standard valve threshold voltage circuit 19, level sensitive circuit 20, photoelectrical coupler 21.

Its microcomputer control system 22 comprises that count detection interface 23, speed detect interface 24, defect property detects interface 25, main control microcomputer 26 as shown in Figure 8; Count detection interface 23, speed detect interface 24, defect property and detect interface 25 and be made up of single-chip microcomputer; When detected winding wire passes through high pressure detection head 6, the corona cloud on winding wire rejected region surface changes, high-field electrode leakage current is over the ground increased, I/V translation circuit 17 changes it into corresponding low-voltage, export level sensitive circuit 20 to through voltage follower 18, after 19 comparisons of standard valve threshold voltage circuit, level sensitive circuit 20 upset outputs, deliver to count detection interface 23 and defect property detection interface 25 through the output of photoelectrical coupler 21, the speed of delivering to the rate signal that fifth wheel 27 collects detects 24, three testing results that detect interface of interface and all delivers to main control microcomputer 26.

Principle of work of the present utility model is: if the sampled voltage of sample circuit 10 and standard negative voltage generating circuit 11 be provided with that voltage value equates but direction when opposite, error amplifying circuit 12 is output as 0; When the detection high pressure departs from setting value, the magnitude of voltage of the sampled voltage of sample circuit 10 and standard negative voltage generating circuit 11 is unequal, error amplifying circuit 12 amplifies both differences, error voltage after the amplification is delivered to pulse width modulation circuit 13, cause the oscillating impulse width of 13 pairs of multivibrators of pulse width modulation circuit, 14 inputs to be modulated, the oscillating impulse of modulation makes the detection high pressure of booster circuit 15 outputs be stabilized in setting value, this stable high direct voltage binding post 5 from the control box is drawn, extension line with ability 50kv high pressure is received high pressure detection head 6, during through high pressure detection head 6, its surface just forms the corona cloud to detected winding wire contactless.When the winding wire of defectiveness passes through high pressure detection head 6, the corona cloud will change, main control microcomputer 26 is according to high pressure detection head 6 and high-pressure generating circuit and detected this variation of leakage current testing circuit, automatically analyze and differentiate, and confirm the defective and the defect property of detected winding wire.

Claims

1, a kind of enameled wire on-line measuring device of online detection winding wire defective, it comprises, high pressure detection head, high-pressure generating circuit, control system, it is characterized in that: its control system comprises switch board (1), microcomputer control system (22), wherein in the switch board (1) several control boxs (2) are housed, power supply transforming circuit (7), the transforming circuit that boosts (8), high-pressure generating circuit and leakage current testing circuit (9) are installed in the inside of control box (2); High-pressure generating circuit comprises high pressure sample circuit (10), standard negative voltage generating circuit (11), error amplifying circuit (12), pulse width modulation circuit (13), multivibrator (14), booster circuit (15), genotron (16); The leakage current testing circuit comprises: I/V translation circuit (17), voltage follower (18), standard valve threshold voltage circuit (19), level sensitive circuit (20), photoelectrical coupler (21); Microcomputer control system (22) is made up of count detection interface (23), speed detection interface (24), defect property detection interface (25), main control microcomputer (26); The shell of high pressure detection head (6) is made by high insulating material, and high-field electrode is sealed in the inside, and high pressure detection head (6) and the centre of high-field electrode that is sealed in the inside are provided with the circular port of breach, and high pressure detection head (6) is installed on enamelling machine or the coating machine; Power supply transforming circuit (7), the transforming circuit that boosts (8), high-pressure generating circuit and leakage current testing circuit circuit board (9), high pressure detection head (6) are electrically connected.

2, enameled wire on-line measuring device according to claim 1 is characterized in that: the panel of control box (2) is provided with power switch (3), relay indicating light (4), high pressure extension line binding post (5)

3, the online checking device of enameled wire according to claim 1 is characterized in that: count detection interface (23), speed detect interface (24), defect property detection interface (25) is made up of single-chip microcomputer, are electrically connected with main control microcomputer (26) by serial communication.

4, the online checking device of enameled wire according to claim 1 is characterized in that: fifth wheel (27) is installed on the front jocket wheel of high pressure detection head, and the wheel week of front jocket wheel is provided with the light groove, detects interface (24) with speed and is electrically connected.