CN2229119Y

CN2229119Y - Portable DC high voltage generator

Info

Publication number: CN2229119Y
Application number: CN 94205844
Authority: CN
Inventors: 王心战
Original assignee: DALIAN POWER SUPPLY TECHNOLOGY Co Ltd
Current assignee: DALIAN POWER SUPPLY TECHNOLOGY Co Ltd
Priority date: 1994-04-05
Filing date: 1994-04-05
Publication date: 1996-06-12
Anticipated expiration: 2004-04-05

Abstract

The utility model relates to an insulation monitoring apparatus for the high voltage electrical apparatuses of cables, etc., in electric force department, etc., which is the improvement of a portable dc high voltage generator. The portable dc high voltage generator needs to solve the problem of enlarging output power and reducing the volume of products. A high voltage transformer with high voltage and small volume made by U-shaped solid insulation substances is arranged between a transformer core and a coil. The high voltage transformer and a first level voltage doubler rectifier circuit are embed in an iron case and are made into modules through insulating treatment. The utility model is the product with minimum volume in the similar products of industrial frequency voltage multiplying rectifier high voltage direct current generators.

Description

A kind of Portable DC high pressure generator

The utility model is the instrument-Portable DC high pressure generator product of on-the-spot Insulation Test detection is done by power industry, production, capital construction and scientific research department to cable, lightning arrester, High-Voltage Electrical Appliances improvement.

Because this product requirement output dc voltage height (more than several ten thousand volts), therefore the cockcroft-walton voltage multiplier circuit structures that adopt more, use at the scene because need, require small portable, again because power frequency voltage multiplying rectifier mode volume is big, therefore adopt improved after the frequency structure of cockcroft-walton voltage multiplier again to the power frequency frequency conversion more, solved the miniature portable problem.Shortcoming is circuit complexity, poor reliability, overload capacity difference etc.Nineteen ninety Dalian University of Technology's static and the Portable DC high pressure generator of special power supply Research Institute new breakthrough has been arranged, employing is with high-tension transformer, the cockcroft-walton voltage multiplier combination of circuits is made " integrated package ", realized the miniaturization of power frequency cockcroft-walton voltage multiplier Portable DC high pressure generator, volume dwindles greatly, only be in the external like product state-of-the-art japanese product volume 1/5～1/14.Be accredited as international most advanced level through State Education Commission, be cited as nineteen ninety, national emphasis new product in 1992 is gone into operation by Dalian University of Technology.The technical indicator of this product line and volume are:

Output voltage output current power output volume

60KV 2mA 120W 100×200×155mm

120KV 2mA 240W 140×225×400mm

200KV 2mA 400W 140×225×450mm

The purpose of this utility model is the improvement to the said goods, the said goods output current is little, power output is little, now the market demand output current be the Portable DC high pressure generator product of 5mA, 10mA, by prior art if power output increases 2.5 times and 5 times, it is a lot of that then small product size is also wanted corresponding increase, this will be unfavorable for the requirement of miniature portable, therefore press for this product is improved.

The utility model is achieved in that

The high Industrial Frequency Transformer of coiling volume small voltage is 1. the time, because high-tension coil and core insulation difficulty, therefore need with solid insulation materials such as insulating paper, film 8. make " U " font barrier every transformer high-voltage coil 9. and transformer core 10. between as Fig. 3, reinforced insulation prevents to discharge.Power frequency high voltage transformer high-voltage coil two is connected on two capacitors end 2. respectively, and wherein one is connected on one and withstand voltagely is capacitor one end of transformer crest voltage, two high voltage silicon stacks of another termination of this capacitor 3., two high voltage silicon stack polarity are opposite.The other end of high-tension coil be connected on one withstand voltage be capacitor one end of 2 times of transformer crest voltages and an end of high voltage silicon stack, and connect high direct voltage output earth terminal simultaneously.One end of another termination another high voltage silicon stack of this capacitor and current-limiting resistance are 4..5. measuring resistance connects between current-limiting resistance and the ground, and current-limiting resistance connects dc high-voltage output end.Circuit connected the back 6. wrap up with insulating paper, film, pack into iron-clad 7. in as Fig. 2, carrying out insulation processing will wherein be full of megohmite insulant, make the big power frequency multiplication of voltage Portable DC high pressure generator module of volume small-power.

The utility model is the improvement to power frequency multiplication of voltage Portable DC high pressure generator product, power output increases 2.5 times under the situation that does not increase volume, the volume that has has also reduced one times, increased by 2.5 times as 120KV 5mA 600W than the power of original product 120KV 2mA 240W, volume has but reduced one times.Technical indicator and volume embodiment behind employing the utility model:

Output voltage output current power output volume

60KV 5mA 300W 100×200×155mm

120KV 5mA 600W 100×200×320mm

200KV 5mA 1000W 140 * 225 * 400mm becomes at present the product of power frequency voltage multiplying rectifier Portable DC high pressure generator volume minimum both at home and abroad.

Description of drawings: Fig. 1 is circuit theory diagrams, and Fig. 2 is high voltage direct current generator modular structure figure, and Fig. 3 is small-sized Industrial Frequency Transformer high-tension coil and core insulation structure chart.1. high-tension transformer, 2. multiplication of voltage capacitor, 3. high voltage silicon stack, 4. current-limiting resistance, 5. high-tension measurement resistance, 6. insulating paper, film, 7. iron-clad, 8. solid insulation such as paper, film material, 9. transformer coil, 10. transformer core among the figure.

Embodiment:

The coiling peak value is a 60KV power frequency miniature transformer, with insulating paper, film such as Fig. 3 " U " font every in transformer coil 9. and iron core insulate between 10..Transformer high-voltage output winding two by Fig. 1 respectively one connect the 60KV capacitor, two silicon stacks of another termination of this capacitor are 3..The transformer other end connects 120KV capacitor, silicon stack and 3. reaches high pressure output ground end, another termination silicon stack of this capacitor 3., current-limiting resistance 4., 5. another termination measuring resistance of current-limiting resistance reaches high-voltage output end.Adorn (as Fig. 2) in 100 * 200 * 320mm iron-clad with insulating paper, film parcel again after having connected, carry out insulation processing and be full of megohmite insulant, make 120KV 5mA Portable DC high pressure generator module, be equipped with control cabinet again and just made Portable DC high pressure generator new product.

Claims

1. Portable DC high pressure generator, has the power frequency high voltage transformer, it is characterized in that: an end of the capacitor that it is the transformer crest voltage that power frequency high voltage transformer high-voltage coil two first heads are connected on a withstand voltage, two high voltage silicon stacks of another termination of this capacitor; The other end of high-tension coil connects capacitor one end that a withstand voltage is 2 times of transformer crest voltages and an end of high voltage silicon stack, and connects high direct voltage output earth terminal simultaneously.One end and the current-limiting resistance of another termination high voltage silicon stack of this capacitor, measuring resistance connects between current-limiting resistance and the ground, and current-limiting resistance connects dc high-voltage output end; Circuit has connected the back and has wrapped up with insulating paper, film and carry out insulation processing in the iron-clad of packing into and will wherein be full of megohmite insulant, makes the high voltage direct current generator module.

2. the said power frequency high voltage transformer of claim 1 is characterized in that: adopt solid insulation material " U " fonts such as paper, film every insulating between transformer core and high-tension coil.