Advantages of the water flow method laying fiber optic cable technology

The laying technology of optical cable by water flow method is a laying method
in which the optical cable is transported forward in a suspended state through the mechanical thrust of the air blower and the high-pressure water flow of the water press.
Its working principle is similar to the airflow method laying optical cable technology, but the buoyancy force of the water flow on the optical cable is greater than the airflow, and the hydraulic press provides high-speed water flow on the surface of the optical cable to form a forward dragging force, and the mechanical thrust of the air blower on the optical cable works together to make the optical cable advance
.
The end of the optical cable can be equipped with an umbrella-like end cap similar to the inner diameter of the pipeline, and the water flow acts on the umbrella-shaped end cap to generate forward pulling force, which plays an additional mechanical force and the effect
of saving water flow.

Compared with the airflow method laying optical cable technology, the water-flow method laying optical cable technology has the following advantages:

1
.
Higher laying efficiency.
Due to the small air density and limited buoyancy of the optical cable, the airflow cannot drag the floating optical cable during the air blowing construction of the optical cable with a large number of cores, and the frictional resistance of the optical cable in the pipeline is large, and the air blowing laying effect is poor
.
However, the time cable is mostly suspended in the pipeline, the contact area with the inner wall of the pipeline is small, and the friction reverse resistance is small
.
In areas with good pipeline conditions and sufficient water sources, the single deployment distance of water laying cable can reach 3-10km, which greatly reduces the time spent on the transfer of construction equipment, increases the total amount of construction in a single day, and accelerates the progress of
the project.
And in the field construction environment, the hydraulic compressor is smaller in size and weight than the air compressor, and has the advantages
of easier transfer and construction.

2.
High
security.
Due to the working principle of the air compressor, the high-pressure air output by the air compressor will be about 20 °C higher than the ambient temperature, which puts forward high requirements for the performance of the pipeline against pressure and aging, and the pipeline may burst in
a high temperature environment.
When the water flow method is used, the probability of pipe bursting can be minimized, and the risk of optical and mechanical properties of
the optical and mechanical properties of the optical cable can be reduced at high temperatures.
When the water flows through the pipeline, the debris accumulated in the pipeline will be discharged, and the optical cable will not have the risk
of bending due to the obstruction of the front end and the excessive push force at the back end.

3.
Low cost and high
utilization rate.
The water required to form the same pressure in the space is smaller than the volume of air, and the energy required to produce the same water pressure is less than that of generating the same air pressure, and the hydraulic compressor as one of the power sources of the water laying cable is more fuel-efficient than the air compressor used in the air blowing method, saving construction costs
.
At the same time, the water flow method does not require water separators, coolers and other equipment used in air blowing construction to ensure the temperature and humidity in the pipeline, which saves equipment costs
.
Skilled workers use equipment for high-speed, long-distance optical cable laying, saving more labor costs
than traditional manual deployment.
Compared with the air flow, the volume and weight of the water flow are large, so the kinetic energy of the water flow at the same speed is higher, and it can still flow
forward in a small gap.
When the duty cycle is small, the optical cable is more stable in the water flow, and will not produce the phenomenon
of shaking and twisting in the pipeline like the air blowing method.
Therefore, when laying optical cables by water flow method in existing pipelines, the maximum number of cores that can be achieved is higher than that of other construction methods such as air blowing method or manual laying, which can improve the resource utilization efficiency of
pipelines.

In summary, we can make it clear that the laying of optical cable by water flow method is an efficient, energy-saving and high-safety optical cable laying process, and under the appropriate conditions of the construction scene, the water application method can achieve far better laying effects
than the air blowing method.
At the backbone network, metro network and access network level, water cable laying technology can complete the deployment of optical cables under complex pipeline conditions, solving the problem
of optical cable laying in difficult construction scenarios.