CN2906674Y

CN2906674Y - Live high-pressure transmission line composite insulator tester with liquid crystal graph display

Info

Publication number: CN2906674Y
Application number: CN 200520006400
Authority: CN
Inventors: 钱岷江
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-11-07
Filing date: 2005-11-07
Publication date: 2007-05-30
Anticipated expiration: 2015-11-07

Abstract

The utility model relates to a liquid crystal graphic display live-line detecting instrument for the compound insulator of the high-tension transmission line, which is a device for live-line detecting the defect of the compound insulator of the high-tension transmission line. With the utility model, the conduction defect, internal evacuation of the live-line compound insulator and the low zero insulation of the compound insulator string can be accurately identified. The utility model is composed of a rack frame1, an electric field detecting instrument2 and an electronic circuit. The electric field detecting instrument2 is positioned in the electric field of the peripheral space of the compound insulator, and generate an analog generated voltage signal thereon; the analog generated voltage signal is converted into a digital signal by a filter11, an excess voltage protector12, a voltage comparison magnifier13, a rectification filter14, and an A/D convertor15; the digital signal is collected and processed by a microprocessor(1); the space position of the detecting instrument2 and the compound insulator is detected by a displacement transducer8, and loaded into the microprocessor(2); at the end of the processing of the space position, the microprocessor(2) sends a data collecting instruction to the microprocessor(1); the microprocessor(1) processes the digital signal collected to present a detecting outcome which is stored in a memory 16 along with the space position. The utility model is easy and simple to be handled, having two functions of a hand operation and an automatic operation; the keyboard3 on the detecting instrument2 allows to dialogize between the man and the machine by means of the liquid crystal screen4 and to set the line parameter of the compound insulator to be detected and view the detecting outcome. The utility model is compact and simple in conformation, small in volume, low in cost, convenient in servicing, safe and highly effective in operation.

Description

The charged detector of liquid crystal graphic presentation high voltage composite insulators

Technical field

The utility model is a kind of instrument of charged detection high voltage composite insulators inherent vice, and it can detect the conductive defect of composite insulator and the position of insulator chain medium or low resistance or null value insulation.Possesses the man-machine conversation function.

Technical background

The detection method of high voltage composite insulators defective mainly contains at present: the infrared imaging method, its temperature variation according to composite insulator on the ultra-high-tension power transmission line detects, infrared thermoviewer can not detect under the stronger background of light, and volume is bigger, costs an arm and a leg and maintenance difficult; Visual method (domestic commonly used) is when the composite insulator outside surface has had obvious defects, just can observe, but the defective of composite insulator inside is difficult for being found, and is difficult to carry out preventative routine inspection and maintenance.

The content of utility model

Principle of the present utility model is, flawless composite insulator space surface electric field is a continuous distribution, when contain in inner defectiveness of composite insulator or the insulator string low resistance (or) during the null value insulation, Electric Field Distribution around the fault location will distort, carry out data processing relatively by the Electric Field Distribution of gathering around the complete defectiveness composite insulator with the standard electric field distribution of perfect sunken composite insulator, just can reach the purpose of the defective composite insulator distorted position of detection.The technical solution of the utility model is: the support that the guide rail bracket made from insulating material 1 can move in a certain direction as electric field detector 2, the surface that electric field detector 2 is installed in guide rail bracket 1 cylindrical side constitutes a slidably electric field detector device.Electric field detector 2 has adopted dual micro processor to carry out data acquisition, locus location respectively, has preset the display process of the row graph curve of detected parameters and discrete sampling data.Electric field detector 2 is during along compound inslation sub-surface unidirectional motion, displacement transducer 8 is surveyed the locus of composite insulator full skirt, send the locus signal of composite insulator full skirt to microprocessor (2), microprocessor (2) with the locus signal Processing after, send instruction to microprocessor (1), start microprocessor (1) and carry out the once electric field data acquisition of this locus.When electric field detector 2 moves on the compound inslation sub-surface; to produce the analogue inductive electric potential signal on the pole plate 6 that two pairs of metal formings on it constitute; this analogue inductive electric potential signal is sent into electronic circuit; the analogue inductive electric potential signal through filtering 11, overvoltage protection 12, the voltage ratio of electronic circuit part amplify 13, rectifying and wave-filtering 14 and mould/number conversion 15; the analogue inductive electric potential signal is transformed into digital signal with the analogue inductive potential change; by microprocessor (1) acquisition process, the data after the processing deposit in the storer 16 of electronic circuit together with the locus.By man-machine conversation, microprocessor (2) in the mode of continuous curve graphic presentation, will show testing result after will being stored in detection data processing in the storer 16 on liquid crystal display 4.When composite insulator existed defective and low null value insulator string, distribution of electric field will distort around it, by comparing with the flawless composite insulator electric field of standard, can discern the locus of defectiveness composite insulator rejected region.Between the utility model detector and the detected material, by 1 insulation of insulating guide rail frame, do not have being connected of electric equipment compartment with composite insulator, can between the full skirt of compound inslation string, not produce short circuit, and the electronic circuit of detector 2 is completely enclosed within the betal can.Therefore, can not cause danger in use.The utility model accuracy of detection height, easy and safe to operate, long service life, cost is low and easy to maintenance.

Description of drawings

Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6 are respectively front view of the present utility model, vertical view, right view, rear view, metal forming pole plate figure and electronic circuit.

Embodiment

Referring to each accompanying drawing, the charged detector of liquid crystal graphic presentation high voltage composite insulators, be by guide rail bracket 1 and the detector 2 that is installed in its outer round surface with and interior electronic circuit constitute.

Guide rail bracket 1 profile is semicircle shape, its axis and detector 2 are perpendicular, its cross section is semicircle, one end semicircular in shape bell mouth shape, two limits, semicircle hydraucone bottom have and the parallel platform that is used for installation and measuring instrument 2 10 of semicircle surface tangent line, and there is a square hole 9 centre, and the lever of displacement transducer 8 can be passed, guide rail bracket 1 middle part two sides have the platform 7 of a pair of two perforation, are used for the fixedly assembling of connector.

The probe segment of detector 2 is, two sides respectively have a pole plate 6 down thereon, this pole plate 6 is to make substrate by insulating material, pasting metal forming at its two constitutes, be installed in the relative two side faces of a can respectively, wherein pole plate 6 can free pull, so that operation keyboard 3 and observation liquid crystal display 4.In use, the pole plate 6 of pull should be closed.Two pairs of pole plates 6 are at intervals made the head and the tail assembled in series, another is to connecing from beginning to end the filtering 11 in the electronic circuit, make the pole plate 6 of series connection in high-tension environment, produce analogue inductive electromotive force, so that provide the analogue inductive electric potential signal to electronic circuit with electric potential difference.

The composition of electronic circuit is, filtering 11, overvoltage protection 12, voltage ratio amplify 13, rectifying and wave-filtering 14 and mould/number conversion 15, and the digital signal of mould/number conversion 15 outputs is handled by microprocessor (1) collection; The active lever of displacement transducer 8 is surveyed the locus of detector 2 and composite insulator, and sends into microprocessor (2); After handle the locus that microprocessor (2) is sent into displacement transducer 8, send the steering order of start detection to microprocessor (1), microprocessor (1) is gathered the digital signal of mould/number conversion 15 and is handled, and deposits memory 16 simultaneously in the locus and finish a data acquisition.The utility model is easy and simple to handle, possesses manual operation and operates two kinds of functions automatically, by to 3 operations of the keyboard on the detector, realizes man-machine conversations in LCDs 4.Voltage-frequency conversion 19 detects power supply 20 voltages and converts frequency to, and microprocessor (2) is gathered this frequency, and shows that in the mode of power supply capacity warning circuit 18 is used to handle superpotential or operation indicating on liquid crystal display 4.

Displacement transducer 8 is, the active lever of variable-length with block the formula Photoelectric infrared switch and form, when guide rail bracket 1 is unidirectional when slipping over the compound inslation substring, composite insulator full skirt sheet touches the active lever of displacement transducer 8, make displacement transducer 8 produce an output signal, send into microprocessor (2) and handle, and send acquisition instructions, start one time Data Detection to microprocessor (1).

The utility model should when using automatic function, should at first be imported the line parameter circuit value of composite insulator, so that the information of accurate recording composite insulator with guide rail bracket 1 along the unidirectional slip of compound inslation sub-surface average rate in use.When the active lever of displacement transducer 8 was touched at the full skirt place, the electric field signal of this locus was 2 acquisition process of detector, and the data storing after acquisition process is used in order to inquiry at any time at storer 16.

Claims

1. the charged detector of liquid crystal graphic presentation high voltage composite insulators, it is characterized in that: the electric field detector (2) of insulating guide rail frame made from insulating material (1) and the circular arc appearance side that is installed in it and the electronic circuit in the detector are formed, the analogue inductive electric potential signal that pole plate (6) on the electric field detector (2) produces, deliver to electronic circuit, filtering (11) through electronic circuit, overvoltage protection (12), voltage ratio is amplified (13), current rectifying and wave filtering circuit (14), mould/number conversion circuit (15), be transformed into digital signal, by microprocessor (1) acquisition process with the analogue inductive potential change; Electronic circuit also comprises a lever displacement transducer (8), it surveys the full skirt locus of composite insulator, when the full skirt of composite insulator touches the active lever of displacement transducer (8), displacement transducer (8) is to position signalling of microprocessor (2) output, after microprocessor (2) is handled position signalling, send the data acquisition instruction of this locus of start detection to microprocessor (1), after microprocessor (1) is handled the digital signal that collects, deposit the memory (16) that is attached thereto simultaneously in the locus, by man-machine conversation, can preset the line parameter circuit value of composite insulator, so that detect automatically; Voltage-frequency conversion (19) becomes frequency signal with the voltage transitions of power supply (20), after microprocessor (2) acquisition process, show in the mode of liquid crystal display (4) with capacity, operation keyboard (3), after microprocessor (2) will be stored in detection data processing in the storer (16), display mode with the continuous curve figure, show testing result at liquid crystal display (4), warning circuit (18) is used to handle the auditory tone cues of superpotential and operation, and communication interface (17) can download to the data in the detector and carry out data analysis and processing in the computing machine.

2, according to the charged detector of claim 1 liquid crystal graphic presentation high voltage composite insulators, it is characterized in that: the monnolithic case semicircular in shape of guide rail bracket 1, one end has semicircle bell mouth shape, guide rail bracket 1 circular arc inside surface has the semicolumn of two projectioies to connect the axial of whole guide rail bracket (1), one opening (9) is arranged at the hydraucone bottom, be used to install lever displacement transducer (8), opening (9) two sides respectively have the platform (10) of a projection, be used for fixing detector (2), opening (9) bottom two sides respectively have two pairs of perforation (7), are the mounting holes of connector, so that connector is connected with insulating bar.

3, according to the charged detector of claim 1 liquid crystal graphic presentation high voltage composite insulators, it is characterized in that: detector is two surfaces that a pole plate that is made of four metal formings (6) sticks on two insulating trips respectively, the biend that it is the round can that two induction pole plates (6) that these four metal formings are formed are assembled in an outer edge, relative two of the pole plate (6) that metal forming constitutes is the can of the fillet conductor of formation that is connected with outer edge; The electronic circuit of installation and measuring instrument (2) between relative two of pole plate (6) that metal forming constitutes, outer edge are the external arc surface that detector (2) that the can of fillet is formed is installed in guide rail bracket (1).

4, according to the charged detector of claim 1 liquid crystal graphic presentation high voltage composite insulators, it is characterized in that: displacement transducer (8) is that an active lever blocks the Photoelectric infrared switch of formula, the arm lengths scalable of active lever; Therefore, this detector displacement transducer (8) is a scalable with the space relative distance of compound inslation.

5, according to the charged detector of claim 1 liquid crystal graphic presentation high voltage composite insulators, it is characterized in that: outer edge be fillet can a pole plate (6) but be a pull.

6, according to the charged detector of claim 1 liquid crystal graphic presentation high voltage composite insulators, it is characterized in that: liquid crystal display (4) and keyboard (3) are mounted in the can that outer edge is a fillet, are that pole plate (6) pull of can one side of fillet carries out the man-machine conversation operation with outer edge.