CN202002908U

CN202002908U - Electric spark leakage detector

Info

Publication number: CN202002908U
Application number: CN2011200217053U
Authority: CN
Inventors: 龚建文; 冯小军
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-01-24
Filing date: 2011-01-24
Publication date: 2011-10-05
Anticipated expiration: 2021-01-24

Abstract

The utility model discloses an electric spark leakage detector. The electric spark leakage detector comprises a high-voltage circuit and an alarm circuit which are arranged inside a leakage detector box body, wherein the high-voltage circuit is provided with a feedback circuit; and the feedback circuit is used for raising output end high voltage. When the high-voltage circuit passes through a layer to be detected, gap breakdown is formed, spark discharge is generated, and a pulse signal is generated for the alarm circuit and is transmitted to the alarm circuit. When a high-voltage probe of the leakage detector passes through the defect position of a needle hole, the output end high voltage is raised by the feedback circuit to form gas breakdown and generate spark discharge, so that the sensitivity is enhanced. Meanwhile, a pulse signal is generated for the alarm circuit of the leakage detector to count leakage points and drive the leakage detector circuit to make a sound-light alarm, so that the technical aim of achieving accurate detection sensitivity is fulfilled, and a very good technical effect is achieved.

Description

A kind of electric spark leak detector

Technical field

The utility model relates to a kind of electric spark leak detector, relates to a kind of instrument and meter equipment, belongs to electronic device field.

Background technology

Electric spark leak detector is also referred to as the electric spark leak detector, is widely used among the industrial circle, and whether its thick non-conductive coating layer that is mainly used to detect on the metal base exists defectives such as pin hole, sand holes, has the fast technological merit of detection speed.

Leak-hunting principle: the insulating corrosion layer gentle gap density of resistance value thin excessively, that leak iron and electric leakage micropore place in metal surface is all very little, produce spark discharge as the high pressure process with regard to forming gap breakdown, produce a pulse signal to warning circuit, alarm sends sound and light alarm, reaches anticorrosive coat leak detection purpose according to this principle.

Electric spark pin hole detector is used for the minimum defective of insulation course on the metallic matrix.

For example: glass-lined coating, enamelled coating, fluorine are moulded layer, epoxide coal bituminous rubber lined pin hole, bubble and crackle.This instrument can detect the chemical plant with anticorrosive coat, also can detect the anticorrosive coat of the large scale structure of gas transmission oil pipeline in the outfield, range of application relates to the various aspects such as domestic enamel industry of petrochemical complex, medication chemistry, chemurgy, accurate chemical industry, rubber, beer, food.

But the degree of accuracy of existing electric spark detector and sensitivity are all not too high, therefore, need a kind of novel electric spark detector.

The utility model content

The utility model can not detect the shortcoming of electric spark exactly at existing electric spark detector, and a kind of novel electric spark detector is provided, and this detector is used to detect the minimum defective of insulation course on the metallic matrix, has quite good detecting effectiveness.

The utility model solves the problems of the technologies described above the technical scheme that adopted as following description:

A kind of electric spark leak detector, comprise the high-tension circuit and the warning circuit that are arranged on leak locator box body inside, described high-tension circuit also is provided with a feedback circuit, described feedback circuit promotes the output terminal high voltage, after high-tension circuit is by layer to be detected, form gap breakdown and produce spark discharge, and then to pulse signal of warning circuit generation, described pulse signal flows among the warning circuit.

Further, preferred construction is be provided with alarm lamp above the described leak locator box body, regulate parts and high pressure output block, and described adjusting parts to be connected with the regulating circuit of leak locator box body inside.

Further, preferred construction is that described adjusting parts are voltage-regulation button and sensitivity adjustment button, the inner corresponding adjustment circuit of described voltage-regulation button and sensitivity adjustment button joint detection box body.

Further, preferred construction is, also is provided with the voltage indicating device above the described leak locator box body, and described voltage indicating device is connected with described high-tension circuit.

The utility model when the high pressure rapier of leak locator passes through the needle pore defect place, promotes the output terminal high voltage by feedback circuit and forms gap breakdown generation spark discharge after having taked technique scheme, promotes sensitivity.Count leak source for simultaneously pulse signal of warning circuit generation of leak locator, drive leak locator circuit sound and light alarm, detect sensitive and accurate technical purpose, have extraordinary technique effect thereby reach.

Description of drawings

By the description of its exemplary embodiment being carried out below in conjunction with accompanying drawing, the above-mentioned feature and advantage of the utility model will become apparent and understand easily.

Fig. 1 is the box body structure synoptic diagram of the utility model electric spark leak detector;

Fig. 2 is the internal circuit schematic diagram of the utility model electric spark leak detector;

Fig. 3 is the internal circuit schematic diagram of the utility model electric spark leak detector;

Fig. 4 is the internal circuit schematic diagram of the utility model electric spark leak detector;

Fig. 5 is the internal circuit schematic diagram of the utility model electric spark leak detector.

Embodiment

Below in conjunction with accompanying drawing the utility model is described in detail.

Fig. 1 is the box body structure synoptic diagram of the utility model electric spark leak detector.

As shown in the figure, be provided with alarm lamp above the described leak locator box body, regulate parts and high pressure output block, and described adjusting parts are connected with the regulating circuit of leak locator box body inside.

And described adjusting parts are voltage-regulation button and sensitivity adjustment button, the inner corresponding adjustment circuit of described voltage-regulation button and sensitivity adjustment button joint detection box body.Also be provided with the voltage indicating device above the described leak locator box body, described voltage indicating device is connected with described high-tension circuit.

Usually, the utility model electric spark leak detector is applicable to all kinds of metal pipe line anticorrosive coat production runes, comprise the high-tension circuit and the warning circuit that are arranged on leak locator box body inside, described high-tension circuit also is provided with a feedback circuit, after high-tension circuit is by layer to be detected, form gap breakdown and produce spark discharge, and then to pulse signal of warning circuit generation, described pulse signal flows among the warning circuit.

When the high pressure rapier of leak locator passes through the needle pore defect place, promote the output terminal high voltage by feedback circuit and form gap breakdown generation spark discharge, promote sensitivity.Count leak source for simultaneously pulse signal of warning circuit generation of leak locator, drive leak locator circuit sound and light alarm, detect sensitive and accurate technical purpose thereby reach.

Fig. 2 is the internal circuit schematic diagram of the utility model electric spark leak detector.

As shown in the figure, what described electric spark leak detector was taked is the mode of direct current supply, and it includes a plurality of rectification circuits and series transformer carries out the step-down power supply, thereby reaches the technical purpose that prevents that electric spark from disturbing.

Fig. 3 is the internal circuit schematic diagram of the utility model electric spark leak detector.

As shown in the figure, the DC voltage that produces from Fig. 2 is carried out DC boosting among entering this circuit, after the effect of described DC voltage through a boost module, passes through after the processing of transformer again, produces the driving voltage of an about 80-360V.

Fig. 4 is the internal circuit schematic diagram of the utility model electric spark leak detector.

The driving voltage that produces from Fig. 3 through a pressure regulation potentiometer after, form high-tension circuit, described high-tension circuit comprises among a voltage operational thick film circuit and the feedback circuit, and, described voltage operational thick film circuit is connected with a voltage indicating gauge and a tension measuring circuit, promote the output terminal high voltage by feedback circuit and form gap breakdown generation spark discharge, and then promote sensitivity.

As can be seen from the figure, described thick film circuit is connected with a relay, and, finally being connected with a warning driving circuit, described warning driving circuit is connected with alarm.

Produce spark discharge with regard to forming gap breakdown when being drawn by hi-line, produce a pulse signal to warning circuit, alarm sends the sound and light alarm signal, has extraordinary effect.

The utility model is after having taked technique scheme, has disposable booster circuit, the form of low-voltage direct regulation and control, and high pressure intuitive display, numeral show, the mode of step-less adjustment high pressure output, make instrument be applicable to that anticorrosion insulating coating material of various differences and different brackets standard construction quality detect, this instrument utilizes the principle of high tension spark discharge, and the detection voltage of stipulating is applied to the anticorrosive coat surface, just produce spark discharge at fault locations such as pin holes, this method is simple.

With compare with quasi-instrument both at home and abroad, have easy and simple to handle, easy to maintenance, work safety, efficient height, stable and reliable for performance, volume is little, in light weight, can online long-term continuous working etc. advantage.

It should be noted that; above-mentioned specific embodiment is exemplary; under above-mentioned instruction of the present utility model, those skilled in the art can carry out various improvement and distortion on the basis of the foregoing description, and these improvement or distortion drop in the protection domain of the present utility model.

It will be understood by those skilled in the art that top specific descriptions just in order to explain the purpose of this utility model, are not to be used to limit the utility model.Protection domain of the present utility model is limited by claim and equivalent thereof.

Claims

1. electric spark leak detector, comprise the high-tension circuit and the warning circuit that are arranged on leak locator box body inside, it is characterized in that, described high-tension circuit also is provided with a feedback circuit, described feedback circuit promotes the output terminal high voltage, form gap breakdown and produce spark discharge after high-tension circuit is by layer to be detected, and then produce a pulse signal to warning circuit, described pulse signal flows among the warning circuit.

2. electric spark leak detector according to claim 1 is characterized in that, be provided with alarm lamp above the described leak locator box body, regulate parts and high pressure output block, and described adjusting parts is connected with the regulating circuit of leak locator box body inside.

3. electric spark leak detector according to claim 2 is characterized in that, described adjusting parts are voltage-regulation button and sensitivity adjustment button, the inner corresponding adjustment circuit of described voltage-regulation button and sensitivity adjustment button joint detection box body.

4. according to claim 2 or 3 described electric spark leak detectors, it is characterized in that also be provided with the voltage indicating device above the described leak locator box body, described voltage indicating device is connected with described high-tension circuit.