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Portable high-pressure vacuum switch vacuum degree tester

A technology of vacuum switch and vacuum degree, which is applied in the field of vacuum switch vacuum degree tester and vacuum switch vacuum degree test device, which can solve the problems of low precision, inability to measure, and large measurement error rate, so as to improve measurement accuracy and magnetic field utilization The effect of high rate and efficiency improvement

Inactive Publication Date: 2010-07-14
JILIN PROVINCE ELECTRIC POWER RES INST OF JILIN ELECTRIC POWER CO LTD +2
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AI Technical Summary

Problems solved by technology

However, the above-mentioned patented technology has a large measurement error rate and low precision, and it cannot be measured outdoors without mains power.

Method used

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  • Portable high-pressure vacuum switch vacuum degree tester
  • Portable high-pressure vacuum switch vacuum degree tester
  • Portable high-pressure vacuum switch vacuum degree tester

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Embodiment Construction

[0016] refer to figure 1 , the present invention comprises a lithium ion power supply system 1, a rectifier circuit 2, DC / DC circuits 3 and 4, a current-limiting resistor 5, an A / D converter 6, a digital optical barrier 7, an ATmega16 single-chip microcomputer 8, a liquid crystal screen 9, photoelectric isolation and Driver 10, photoelectric isolator 11, excitation coil 12, capacitors C1, C2, sampling resistor Re and thyristor VT1, the connection method is: 220VAC1 from the lithium-ion power supply system passes through the rectifier circuit 2 and then is divided into two circuits and connected to two DCs / DC circuit 3 and 4 input terminals, the positive pole of the capacitor C1 is connected to a certain terminal of the DC / DC circuit 3 and the exciting coil 12, the output terminal of the thyristor VT1 is connected to the negative pole of the capacitor C1, and the input terminal of VT1 is connected to the other terminal of the exciting coil 12 A binding post, the control stage ...

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Abstract

The invention relates to a portable high-pressure vacuum switch vacuum degree tester which is characterized by comprising a field coil, a measurement and control system and a lithium ion power supply system. The field coil is a flat cable type hollow cylindrical coil; leads are connected in series with each other; both ends of the coil are connected through a parallel port; the field coil is wound in the middle part of a vacuum arc extinguish chamber and is discharged by a capacitor; the measurement and control system is used for controlling the generation of a pulse magnetic filed and a pulse electric field as well as measuring, converting and displaying ion current; and the lithium ion power system is used for providing 220V / 50Hz sine wave alternative current and 24V direct current. The invention improves the sensitivity for measuring the vacuum degree of a non-detachable vacuum arc extinguish chamber as well as the efficiency for generating high-pressure electric field and magnetic field, improves the measuring precision of the tester and ensures more accurate vacuum degree value under the different ionic current orders of magnitude by adopting piecewise linearization processing to the ionic current-vacuum degree curve in a data memory.

Description

technical field [0001] The invention designs a vacuum degree tester, in particular a vacuum switch vacuum degree tester based on a portable lithium ion power supply, which belongs to a vacuum switch vacuum degree tester. Background technique [0002] The use of vacuum circuit breakers currently occupies a large proportion in the low-voltage and medium-voltage fields. It is a switching device with vacuum as the insulation and arc-extinguishing medium, and will gradually replace SF in the high-voltage field in the future. 6 breaker. Compared with other types of circuit breakers, vacuum circuit breakers have the advantages of safety, reliability, long life, small maintenance workload, and no pollution to the environment. The vacuum interrupter is the core part of the vacuum circuit breaker. In order to achieve current breaking and arc extinguishing, the pressure in the vacuum interrupter is generally not higher than 6.6×10 -2 Pa. Therefore, the degree of vacuum is one of th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01L21/30
Inventor 梁义明王东珏石一邵涛严萍黄涛
Owner JILIN PROVINCE ELECTRIC POWER RES INST OF JILIN ELECTRIC POWER CO LTD
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