The influence of air leakage from the brake line


One of the main indicators of the operational status of the train braking system is the density of its inhibitory network. As shown by the operational test, approximately 80% of leaks in the position of the train going through the main duct leaks, terminal heads, faucets and connecting hoses. During long-term inhibition of direct-acting with diffuser added to these leaks leaks through the brake cylinders, which are replenished from the reserve tank, reported through a check valve to the brake line.

Leaks in the position of the train causing the pressure drop along the length of the brake line due to the energy loss due to friction during the motion of air in the main duct. There is a difference in pressure in the brake line between the head and tail of the train, which greatly depends on its length and leaks.

Low pressure in the charger rear of the train may reduce the maximum pressure in the brake cylinders and affect the efficiency of the automatic brakes. Therefore, the freight trains weighing more than 6 tons of pressure in the charging position of the train driver handle faucet installed 6.0-6.2 kgf/cm2, if the normal charging pressure of 5,3-5,5 kg/cm2 in the brake line of the tail car pressure will be less than 4.5 kg/cm2.

Greatly slow down air leakage? increase in pressure in the brake line when on vacation, especially in the rear of the train, and make a charging time workers, spool cameras, spare tanks and leave M320 diffusers that do not have the flat mode. In the presence of leaks requires more time to restore readiness to re-brake deceleration.

Increased leakage causes an increased flow of compressed air in the line. Compressor engine at the same time can overheat, and the compressed air does not have time to cool in the main tank, and comes with high temperatures in the brake line. It is cooling and moisture loss, which freezes at low temperatures and can cause failure of brake system trains. State of compressors for systematic work with leaks greater than normal, worse. In the process of maintenance of cars should be eliminated all air leaks detected by the ear, and at the current place of repair leaks detected obmylivaniem.


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