Mobile type live washing device for transmission line

Abstract

The invention discloses a mobile type live washing device for a transmission line, comprising a carrier vehicle. The carrier vehicle carries a power device, a monitoring device and a water tank, wherein the output end of the power device drives a high pressure pump through a resilient coupling; after water in the water tank is pressurized by the high pressure pump, the water is sprayed out from a gun nozzle through a spillover valve, a main water conduit and a squirt gun; insulators on the transmission line are washed by water column with certain pressure and length. The monitoring device can automatically control rotating speed of the power device to play a role in regulating output hydraulic pressure of the high pressure pump; the power device drives a main reel through a hydraulic device; the monitoring device controls positive and negative rotation of the main reel through a three-position four-way valve to achieve the aim of mechanically receiving and releasing the main water conduit; after the device conveys the water to the position with horizontal distance of 300m and vertical distance of 180m, the requirement of washing the insulators of the 110 to 500kV transmission line can be still met. The device integrally effectively realizes transmission line live washing operation in long distance on large scale.

Description

technical field [0001] The invention relates to a live water flushing device for a power transmission line, in particular to a mobile live water flushing device for a power transmission line that meets the actual needs of the current power system and implements remote operations. Background technique [0002] With the rapid development of industrial economy and urban construction, higher and higher requirements are put forward for the continuity and quality of power supply. Once a pollution flashover accident occurs, it will directly lead to large-scale and long-term power outages for users, resulting in a decrease in the reliability of power supply, which will have a serious negative impact on industrial and agricultural production and residential electricity consumption. It is very important to prevent pollution flashover of transmission lines, prevent large-scale power outage accidents in the power grid, and ensure safe and stable operation of the power grid and reliable ...

AI Technical Summary

Problems solved by technology

Especially when the designed leakage distance of the insulator is not enough or the insulator used cannot meet the pollution requirements, pollution flashover is very likely to occur

[0003] At present, the main anti-pollution measures adopted by the transmission line operation management unit are power outage cleaning, but there are great shortcomings: firstly, the planned power outage time for power outage cleaning is long; Power outages have a serious impact on production and life; ensuring continuous power supply is the basic requirement for power in all sectors of the national economy. Live work has great economic and social benefits for improving the reliability of power supply and reducing power outages

[0011] 2. The maximum outlet pressure of domestic fire trucks is only 3.5MPa. When the fire truck is parked near the tower (40m high) 200m away, the total length of the water diversion pipe needs to be 250m. The friction loss of the water diversion pipe, joint loss and water gravity loss along the way, It is enough to exhaust the outlet pressure of the pump and cannot meet the flushing pressure required by the tower height above 40m

[0012] 3. The fire truck is directly driven by PTO, and there must be one person in the cab to control the engine speed. The flushing personnel and the throttle control personnel cannot cooperate with each other during the flushing process, otherwise the water column will be scattered or interrupted during the flushing process, which will cause serious damage to the flushing process. big security risk

[0013] (4) Helicopters have their advantages in carrying out electrified water washing operations, but at present, the cost is too high and the water capacity is small, so it is impossible to form a large-scale operation

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