Intelligent long-distance negative pressure traction positive pressure propulsion cable system and method

Abstract

The invention relates to an intelligent long-distance negative pressure traction positive pressure propulsion cable passing system and method. Intelligent long-distance negative pressure traction positive pressure propulsion cable-through system, the air outlet port of the No. 1 air pump is connected with the air inlet port of the cable blowing machine, the cable blowing head of the cable blowing machine is sealed with one end of the silicon core tube, and the other end of the silicon core tube is sealed. One end is sealed and connected to the air inlet port of the No. 2 air pump, the air sealing piston is movably placed in the silicon core tube, and the optical cable on the optical cable reel is connected to the air sealing piston after passing through the cable blowing machine. The end forms a positive pressure pushing state, and a negative pressure pulling state is formed at the outlet end of the optical cable in the silicon core tube. The positive pressure pushing and negative pressure pulling are combined to achieve the effect of 1+1=2, which increases the force acting on the gas seal piston. The forward driving force solves the problem of insufficient power caused by only using high-pressure pushing. At the same time, because the forward driving force acting on the air seal piston is increased, it also satisfies the purpose of longer-distance optical cable laying.

Description

technical field [0001] The invention belongs to the technical field of optical cable laying, and in particular relates to an intelligent long-distance negative pressure traction and positive pressure propulsion cable passing system and method. Background technique [0002] At present, the laying of optical cables mostly adopts the method of air blowing. Usually, when laying optical cables on roads, the laying of optical cables can be smooth only when the terrain is relatively flat, the silicon core pipes are laid straight, and there is no pressure loss. When the silicon core tube is deformed or ruptured due to external extrusion and other problems, it often hinders the laying of the optical cable. Therefore, it is generally necessary to test blow before laying the optical cable to determine whether the silicon core tube is blocked. It is necessary to determine the blockage position of the silicon core tube, and cut off the deformed silicon core tube and re-sleeve it. However...

AI Technical Summary

Problems solved by technology

[0002] At present, the laying of optical cables mostly adopts the method of air-blow laying. Usually, when laying optical cables on the road, the laying of optical cables can be relatively smooth only when the terrain is relatively flat, the laying of silicon core tubes is relatively straight, and there is no pressure loss. When the silicon core tube is deformed or broken due to external extrusion and other problems, it often hinders the laying of the optical cable. It is necessary to determine the blockage position of the silicon core tube, cut off the deformed silicon core tube and re-sleeve the tube, but in the prior art, after the blockage is determined, a thread is generally tied to the air-sealing piston, and the thread and the air-sealing piston are pulled out after the blockage , according to the length of the line to obtain the approximate position of the blockage, the measurement is not accurate enough, and the process is relatively cumbersome, and even if the test blowing is carried out, the friction resistance between the optical cable and the silicon core tube will be too large when laying the optical cable. The phenomenon of insufficient forward power appears. At this time, if the air pressure is increased, the air pressure value may exceed the tolerance range of the silicon core tube, and the tube will burst, resulting in greater construction accidents and losses. If the air pressure is not increased, the optical cable cannot move forward, causing Dilemma. At the same time, because the thrust provided by the existing cable blowing is not large enough, the one-time cable blowing distance in the existing cable blowing process is 1000-2000 meters. Digging too many manpower wells will cause waste of material and manpower. At the same time, it also brings more potential safety hazards, which affects the normal use of optical cables

Images