RU2407665C1 - Method of power conservation in railroad transport - Google Patents

Abstract

FIELD: transport.

SUBSTANCE: invention relates to railroad transport. Power conservation method implies using lubricant-coolant fed into zone of contact between rail and all wheels of the train to reduce friction losses in wheel-rail pair. Pressure gas dynamic unit serves to supply lubricant-coolant in aforesaid zone.

EFFECT: reduced power losses in train motion.

1 cl

Description

The alleged invention relates to the field of railway transport and offers one of the solutions to the problem of energy saving by reducing losses to overcome friction in the "wheel-rail" system.

From the practice of operating railways, it is known to use grease in the area of contact of a vehicle wheel with a rail, which saves energy on traction of trains [1, 2]. On domestic railways, this action is carried out using technical means in the form of various comb-rail-lubricators (ATS), using mainly oil-containing lubricants (see, for example, composition according to RF Patent No. 2196807 [3].).

There is an alternative method of lubrication [4] according to the RF Patent No. 2142890, using a refrigerant for lubrication, supplied to the contact zone of the wheel with the rail, as a result of which moisture condensed from the surrounding air settles in the form of frost on the interacting surfaces of the wheel and the rail.

However, when addressed to the locomotive’s wheelsets, the known methods come into conflict with the generally accepted way on the country's roads to combat wheel slippage along the rail, which consists in feeding sand to the area of their contact.

At the same time, the results of an experiment to study the effectiveness of “cold lubrication” [5, 6], carried out using liquid nitrogen as a refrigerant, having witnessed a significant decrease in the amount of traction required to ensure vehicle movement, led to the conclusion that it is advisable to change the process application address: from the locomotive to the train.

However, the exotic nature of the technique and the means of its implementation (liquid nitrogen) have long been a constraining factor on the way of developers. The following circumstances served to resolve the difficulties for the practical implementation of “cold lubrication”:

- a wide class of lubricants and coolants is known [7], from which (at least for use in the winter months) it is possible to choose a lubricant-cooling agent more affordable and technologically advanced than liquid nitrogen (this consideration is reinforced by information on the latest developments in biofuels and biofuels);

- in the operational practice of railways in the zone of Siberia and the Far East, there are known areas with frequent accumulation of fog, which in the cold season plays the role of a cooling lubricant that significantly reduces the adhesion of the wheel to the rail;

- known technical means in the form of gas-dynamic plants [8], capable of generating significant volumes of fog, consisting of a finely divided mixture of liquid sprayed by a pressure stream of air.

The proposed method solves the problem of energy saving in the railway transport by reducing losses to overcome friction in the "wheel-rail" system, which is provided by supplying a lubricant-coolant in the contact zone with the rail of each wheel pair in the train, by pumping it in the form of fine fog gas-liquid mixture into a space bounded by a railroad track, wheel disks and car bottoms.

At the same time, the productivity of the technical means for making fog can be adjusted so that the possibility of effective braking of the train composition and instant ventilation of the car space on the last carriage is preserved by stopping the supply of cutting fluid to the zone of pressure air flow.

The technical result of the implementation of the proposed method is to reduce the required traction for the implementation of the movement of the train, as a result - energy saving.

Information sources

1. Railways of the world. No. 6.1996. S.55-60.

2. Railways of the world. No. 1.1990. S.51-53.

3. Composition for lubrication and hardening of the surface in the friction zone of the wheel-rail. RF patent No. 2196807. Bull. No. 2. 2001.

4. A method of reducing wear on the side surface of rails and wheel flanges of a railway vehicle. RF patent No. 2142890. Bull. Number 35. 1999.

5. Milovanova E.A., Milovanov A.A., Milovanov A.I. Laboratory experiment to study the crest-rail grease "cold". Proceedings of the Second Int. Symposium on Transport Tribotechnics "Transtribo-2002". St. Petersburg. 2002.

6. Milovanova E.A., Milovanov A.A., Milovanov A.I. An experiment to study the effectiveness of "lubrication" of riding surfaces with a refrigerant. Collection of international reports. conf. "The experimental ring VNIIZHT - 70." Shcherbinka. Russia. 2002.

7. Obelnitsky A.M., Egorushkin EA, Chernyavsky Yu.I. Fuel, lubricants and coolants. IPO Polygren. - M. 1997.272 p.

8. Combined universal gas-dynamic installation of dispersed chemical and biological treatment. RF patent No. 46148. Bull. Number 18. 2005.

Claims (1)

A method of energy saving in railway transport by reducing friction overcoming losses in the wheel-rail system, which is provided by supplying a lubricant-cooling agent to their contact area, using a technical tool in the form of a pressure-gas dynamic unit, characterized in that the lubricant-cooling agent is supplied carried out in the zone of contact with the rail of each wheelset in the train by forcing it in the form of fog, which is a finely dispersed gas-liquid mixture into space, limited by rail, wheel disks and car bottoms; at the same time, by adjusting the productivity of the pressure unit, the train composition and the instant ventilation of the car space on the last car are effectively braked by stopping the supply of the cooling lubricant to the pressure air flow zone.