1. Joint strength method:
By energy method is to use more gas blowing machine joint work, is when the first cable blow cable machine to the next blowing point, the second blow cable machine start working, air flow through the inlet chamber of the machine to the next section of the pipeline and release the upstream from vent pipe of high pressure air flow. Theoretically, through such joint strength, fiber optic cable can blowing infinite long distance. But also have shortcomings, weaknesses: need equipment is more, one-time investment is larger, and the location of the bit blown, due to the different terrain is not easy to determine.
2. From the middle to the ends of blowing:
Blowing is from middle to both ends when the cable laying length exceeds a blow cable machine, a gas blowing length can choose from among lines open to two side blowing, blowing the length is about half the total length, specific methods was that the plate is installed near the cable tray, when after the end of micro cable laying, then cable tray with a blow cable machine of remaining micro line into the dish, then the inner ring of micro cable end, conversion direction blow cable machine, plate device of micro cable blow into the pipe. If a gas blowing pipe laying well, success rate is very large.
3. The leapfrog gas blowing method:
Blowing method is to install so-called leapfrog next in blow point is plate, using high speed air flow in the piping will be blowing point in upstream cable all collect blowing point to the next, then blow cable machine blowing point move to the next, so the cycle, until all cable blowing out.