Grounding bar burial depth detector
A grounding bar and detector technology, which is applied in the field of grounding bar depth detectors, can solve problems such as deep burial of grounding bodies that cannot be constructed according to the drawing, grounding bar burial depth does not meet the requirements, and engineering technical supervision is not in place, etc., to improve testing Accuracy and work efficiency, improved safety and stability, well-structured effects
Active Publication Date: 2014-10-08
STATE GRID CORP OF CHINA +2
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Problems solved by technology
However, during the construction process, the grounding project is a concealed project, and the technical supervision of the project is not in place. Due to various reasons, the construction unit cannot deeply bury the grounding body according to the construction, so that the depth of the grounding row does not meet the requirements. The phenomenon is relatively common, resulting in a large number of tower grounding resistance exceeding the standard after the construction
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[0012] A new grounding depth detector, including a metal screw 4 driven by a motor 2, the bottom of the metal screw is connected with a crescent-shaped detection head 7 (metal material), and the concave surface of the crescent-shaped detection head is downward, and the metal screw rod The scale line 5 indicating the detection depth is set on the top; the motor 2 is connected with the first power supply 9 and the relay 8 to form a motor working circuit; the metal screw rod is connected with the relay 8, the relay is connected with the negative pole of the second power supply, and the positive pole of the second power supply is connected with the alarm The alarm (speaker and lamp) 10 is connected, and the siren is connected with the grounding down conductor 11 of the grounding bar 12. When the crescent-shaped probe touches the grounding bar, the crescent-shaped probe, metal screw rod, relay, second power supply, alarm The device, grounding down conductor, and grounding bar form a...
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The invention discloses a novel grounding bar burial depth detector which comprises a metal screw rod driven by a motor. The bottom of the metal screw rod is connected with a crescent detection head, and the concave surface of the crescent detection head faces downwards. The metal screw rod is provided with scale lines for indicating detection depth. The motor is connected with a first power supply and a relay to form a motor operating circuit. The metal screw rod is connected with the relay. The relay is connected with the negative electrode of a second power supply. The positive electrode of the second power supply is connected with an alarm. The alarm is connected with a grounding down lead of a grounding bar. When the crescent detection head makes contact with the grounding bar, the crescent detection head, the metal screw rod, the relay, the second power supply, the alarm, the grounding down lead and the grounding bar form an alarm loop. The novel grounding bar burial depth detector is reasonable in structure, light and convenient and visual to use; in the process of testing the burial depth of the grounding bar, the detector can be driven into the ground more rapidly to read the depth value, and therefore testing accuracy and work efficiency are improved.
Description
technical field [0001] The invention relates to a grounding row buried depth detector. Background technique [0002] The transmission line is an important part of the power grid. The towers of the transmission line are tens of meters above the ground, and are exposed in the wilderness or high mountains, stretching for tens or hundreds of kilometers, so there are many chances of being struck by lightning. In case of power interruption, in order to prevent lightning from directly hitting the wires, lightning protection wires are often erected along the line and grounded. Therefore, the effective grounding of overhead line towers is crucial to the safe and stable operation of the power system. [0003] The grounding device includes a grounding body and a grounding downconductor. The grounding body is used to spread the lightning current introduced by the grounding downconductor to the ground, and its deep burial is an important factor affecting the grounding effect of the tower...
Claims
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Login to View More IPC IPC(8): G01B5/18
CPCG01B5/18G01B7/26
Inventor 杨新天朱力秦勇
Owner STATE GRID CORP OF CHINA