CN-224216806-U - Insulation test meter pen with electricity testing function

CN224216806UCN 224216806 UCN224216806 UCN 224216806UCN-224216806-U

Abstract

The utility model discloses an insulation test meter pen with an electricity test function, which belongs to the field of electrician detection tools and comprises a pen holder main body and a probe arranged at one end of the pen holder main body, wherein an electrified detection assembly, an insulation test assembly and a switching assembly which are respectively and electrically connected with the probe are arranged in the pen holder main body, the electrified detection assembly and the insulation test assembly are respectively and electrically connected with the switching assembly, the switching assembly comprises a piezoelectric sensor, the piezoelectric sensor is connected with the probe through an elastic contact piece, the electrified detection assembly and the insulation test assembly are respectively and electrically connected with the piezoelectric sensor, the switching assembly also comprises a button arranged on the pen holder main body, and the button is in transmission connection with the piezoelectric sensor. The utility model can integrate the electricity testing function and the insulation testing function into one meter pen, is small and exquisite in whole, and can effectively reduce the probability of electric shock, equipment and instrument damage and simultaneously reduce the working strength by only checking the terminal once by personnel in actual use.

Inventors

WEN JINLONG
XIE CHAOXUE
ZHANG TAO
DING ZHIJUN
Zeng Xiangtuan
WANG DONGMING

Assignees

华电福新广州能源有限公司

Dates

Publication Date: 20260508
Application Date: 20250409

Claims (9)

1. The insulation test meter pen with the electricity test function comprises a pen holder main body (1) and a probe (2) arranged at one end of the pen holder main body (1), and is characterized in that an electrified detection assembly (4), an insulation test assembly (5) and a switching assembly (6) which are respectively and electrically connected with the probe (2) are arranged in the pen holder main body (1); The live detection assembly (4) and the insulation test assembly (5) are respectively and electrically connected with the switching assembly (6); The switching assembly (6) comprises a piezoelectric sensor (61), the piezoelectric sensor (61) is connected with the probe (2) through an elastic contact piece (64), and the live detection assembly (4) and the insulation test assembly (5) are respectively and electrically connected with the piezoelectric sensor (61); the switching assembly (6) further comprises a button (62) arranged on the pen holder body (1), and the button (62) is in transmission connection with the piezoelectric sensor (61).
2. The insulation test pencil with the electricity test function according to claim 1, wherein the pencil holder body (1) is provided with an LED indicator lamp (71) and a display screen (72).
3. The insulation test pencil with the electricity test function according to claim 1, wherein a detachable storage battery (8) is arranged at the tail of the pencil holder body (1).
4. The insulation test meter pen with the electricity test function according to claim 1, wherein a self-locking assembly (10) is further arranged in the pen holder main body (1), and the probe (2) is detachably connected with the self-locking assembly (10) in a spring needle contact plug mode.
5. The insulation test pencil with the electricity test function according to claim 1, wherein an insulation protection layer is arranged on the outer surface of the pencil holder body (1).
6. The insulation test pencil with the electricity test function according to claim 1, wherein an insulation protection layer is coated on a high-voltage line in the pencil holder body (1).
7. An insulated test pencil with electroscopic function according to claim 1 is characterized by the fact that the live detection assembly (4) comprises a current detection channel consisting of a differential amplifier circuit and a threshold comparator, said current detection channel comprising a first detection channel consisting of a neon tube parallel circuit and a response voltage and a second detection channel consisting of an electronic differential detection circuit.
8. Insulation test pencil with electroscopic function according to claim 1 is characterized in that the insulation test assembly (5) comprises a miniature high voltage generator and a step-up transformer.
9. The insulation test pencil with the electricity test function according to claim 1, wherein an impedance monitoring circuit, a gradient boosting control circuit and an overcurrent self-destruction safety circuit are integrated on the insulation test assembly (5).

Description

Insulation test meter pen with electricity testing function Technical Field The utility model belongs to the field of electrician detection tools, and particularly relates to an insulation test meter pen with an electricity test function. Background The regulations for electric power safety (electric parts of substations and power plants) prescribe that the technical measures for ensuring safety are power failure, electricity inspection, grounding, hanging of signboards and installation of fence (rail). The test is a necessary condition for carrying out the work such as equipment overhaul and the like, the test insulation belongs to one operation in the work such as equipment overhaul and the like, and the prior electrical specification is required to be followed. Actual operation of insulation of 380V electrical equipment: 1. and (3) power failure, namely disconnecting a power switch of the equipment to ensure that the equipment has an obvious disconnection point. 2. The test operation includes that a hand-held test pencil is used for contacting a terminal of a tested loop, no electrification is indicated when neon bubbles of the test pencil are not bright, and the test pencil is used for measuring voltage by using a universal meter, a common terminal meter pen is grounded, a measuring terminal meter pen is contacted with the terminal of the tested loop, and no electrification is indicated when the voltage is 0. 3. And (3) insulating test, namely using a megohmmeter (megameter), grounding an E end, contacting an L end with a terminal of a tested loop, and dismantling a meter pen after reading measurement data. In the above process, the electroscope needs to be used for electroscope, the megger (megameter) is used for measurement, a large number of terminals are tightly connected through terminal rows in field practical wiring, the instrument is replaced after the electroscope, if personnel do not carefully check, the two measurements are possibly not measured at the same position, the risk of error measurement interval exists, and the insulation test measures the consequences of personal electric shock, equipment damage and instrument damage possibly caused on the wrong terminals, so that potential safety hazards exist. Disclosure of utility model Aiming at the problems in the prior art, the utility model aims to provide an insulation test meter pen with an electricity test function, which comprises a pen holder main body and a probe arranged at one end of the pen holder main body, wherein an electricity test assembly, an insulation test assembly and a switching assembly which are respectively and electrically connected with the probe are arranged in the pen holder main body; the live detection assembly and the insulation test assembly are respectively and electrically connected with the switching assembly; The switch assembly comprises a piezoelectric sensor, the piezoelectric sensor is connected with the probe through an elastic contact piece, and the electrified detection assembly and the insulation test assembly are respectively and electrically connected with the piezoelectric sensor; The switching component further comprises a button arranged on the pen holder body, and the button is in transmission connection with the piezoelectric sensor. As a preferable scheme, the pen holder main body is provided with an LED indicator light and a display screen. As a preferable scheme, the tail of the pen holder body is provided with a detachable storage battery. As a preferable scheme, the self-locking assembly is further arranged in the pen holder main body, and the probe is detachably connected with the self-locking assembly in a spring needle contact inserting and pulling mode. Preferably, an insulating protection layer is arranged on the outer surface of the pen holder body. As an optimal scheme, the high-voltage line in the pen holder main body is coated with an insulating protection layer. Preferably, the live detection assembly comprises a current detection channel formed by a differential amplification circuit and a threshold comparator, and the current detection channel comprises a first detection channel formed by a neon tube parallel circuit and a response voltage and a second detection channel formed by an electronic differential detection circuit. Preferably, the insulation test assembly comprises a miniature high voltage generator and a step-up transformer. As an optimal scheme, the insulation test assembly is integrated with an impedance monitoring circuit, a gradient boosting control circuit and an overcurrent self-destruction safety circuit. Compared with the prior art, the utility model has the beneficial effects that: The utility model can integrate the electricity testing function and the insulation testing function into one meter pen, is small and exquisite in whole, and can effectively reduce the probability of electric shock, equipment and instrument damage and simultaneously reduce the wo