A hydraulic blasting device for an angle steel structure transmission tower located in a mountainous area

Abstract

The invention discloses a water pressure blasting device of an angle steel structure power transmission tower located in a mountainous area. The device comprises first angle steel, the two side facesof the first angle steel are connected with to-be-blast angle steel through second angle steel, the first angle steel and the to-be-blast steel form a cylindrical structure, the two ends of the cylindrical structure are sealed through third angle steel, water bags and cartridge bags are alternately arranged inside the cylindrical structure in sequence, and the cartridge bags are led out of the cylindrical structure through a nonel detonator. According to the water pressure blasting device of the angle steel structure power transmission tower located in the mountainous area, the whole device can be fixed to be of the cylindrical structure only through the angle steel and bolts, the water bags and the cartridge bags are placed in the airtight space, the blasting damage degree is greatly improved through incompressibility of liquid water, and the blasting effect can be ensured; and compared with concrete blocks, the water bags are more beneficial to transportation, and more suitable for blasting of the power transmission tower poor in transportation.

Description

technical field [0001] The invention relates to a hydraulic blasting device for an angle steel structure transmission tower located in a mountainous area, belonging to the field of blasting. Background technique [0002] According to the plan, my country will build dozens of UHV DC projects in the next 10-20 years, and gradually form a UHV AC-DC hybrid power grid, which will supply power to the central and eastern load centers through UHV DC and AC systems. In order to alleviate the problems faced by the multi-infeed DC system, such as insufficient reactive power support capacity of the receiving end grid, and the dense sending system causing the short-circuit current to cross the line, UHV layered DC has become a new DC access mode. Compared with conventional UHV DC, the main difference is that the high-end converter transformer and low-end converter transformer on the inverter side are respectively connected to 500kV and 1000kV power grids, and the AC filter and reactive p...

AI Technical Summary

Problems solved by technology

[0003] However, when constructing UHV transmission towers, most of the old iron towers are on the same path as the newly built new iron towers, and the original line ground wires and iron towers must be removed before construction can begin.

The dismantling of angle steel laps in our country is still in its infancy and needs to be dismantled by workers, which is labor-intensive, low-efficiency, and highly dangerous.

In the angle steel truss, it is impossible to blast through the hole, only exposed blasting, a large part of the energy is dissipated into the air, and the blasting effect is poor

Since the transmission tower is located in a mountainous area, there is not enough electricity, and welding cannot be carried out on site. Moreover, the transportation in the mountainous area is inconvenient, and it is impossible to transport materials in large quantities.

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