Why is it difficult to start a drilling rig in winter
The Drilling Rig's winter starting misery is not only determined by its own technical condition, but also by the influence of the outside temperature. Starting in winter at low temperature is more difficult, mainly due to the following reasons:
(1) cold winter climate, low ambient temperature, oil viscosity increases, the frictional resistance of the moving parts increases, so that the starting speed is reduced, difficult to start.
(2) The capacity of the battery decreases with the drop in temperature, which further reduces the starting speed.
(3) due to the starting speed reduction, compressed air leakage increased, the cylinder wall heat dissipation increased, resulting in the end of compression when the temperature and pressure of the air is greatly reduced, so that the diesel fuel ignition of the delayed period of time to grow, and in severe cases, even can not be burned.
(4) low-temperature diesel fuel viscosity increases, so that the injection speed is reduced, coupled with the air at the end of compression when the cyclone speed, temperature and pressure are relatively low, so that the spray into the cylinder of diesel fuel atomization quality is poor, it is difficult to quickly form a good combustible gas with the air and in time to ignite combustion, or even can not catch fire, resulting in starting difficulties.
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