RU2424928C1 - Method of railway locomotive block-modular configuring - Google Patents

Abstract

FIELD: transport.

SUBSTANCE: proposed method relates to liquefied natural gas supply systems for gas diesel and gas turbine engine locomotives. Regasifier is mounted on locomotive and coupled with engine sections via gas lines. Stationary cryogenic cistern is mounted on tender and connected via flexible gas line with said regasifier. Gas supply is performed at equipment station by replacing tender with emptied cistern by gas filled cistern and making necessary connections of flexible gas lines and couplers.

EFFECT: higher reliability and safety, reduced costs.

2 dwg

Description

The invention relates to the field of gas supply to vehicles, in particular gas and diesel locomotives and gas turbines, liquefied natural and oil gases.

There is a method of block-modular equipment of railway locomotives, including installing a quick-change cryogenic tank and regasifier on the supporting platform of the tender, fastening them to the platform with quick-coupling assemblies, connecting the gas pipeline with the fittings to one another, hooking the tender to a gas and diesel locomotive using universal docking knots and to the freight train, connecting the tender with the engine sections of the locomotive with gas and gas pipelines and electric cables, disconnecting the empty tender tank from the platform and regasifier After moving to an equipment point and / or gas filling station (gas filling station), replacing the aforementioned empty tank with a crane to a tank filled with liquefied natural gas, fastening the filled tank to the tender platform with quick-coupling assemblies and connecting the gas line to the regasifier, as well as with a coupling lock a tender for the freight train for further movement along the route (see the journal “Transport on alternative fuel”, No. 4, pp. 70-73, article “LNG application on locomotives based on block the modular principle of transportation, equipment and gas consumption ”, 2008).

The specified method, despite its progressiveness in comparison with the known methods of refueling a tank located directly on a gas locomotive, has the following disadvantages:

- dismantling an empty tender tank and installing a gas-filled tank in its place using a powerful gantry crane with a lifting capacity of at least 100 tons at each outfit is an unsafe and expensive process;

- placing a regasifier on each tender and connecting it to the engine sections of the locomotive significantly lengthens communications for supplying gas, hot water and electricity, reduces the reliability of the entire fuel system and increases its cost;

- the total time for equipping the tender (tank replacement, disconnection, connection of communications, maneuvering, etc.) according to the calculations can be more than one hour, which essentially means a simple load for refueling.

The objective of the invention is to increase the efficiency of the method of equipping railway locomotives.

The technical result consists in increasing the reliability and safety, reducing the cost of the entire fuel supply system for gas and diesel locomotives, as well as reducing their downtime for refueling.

The specified technical result is achieved due to the fact that the claimed method of block-modular equipment of a railway locomotive, including coupling a railway locomotive with a tender, installing a tank and regasifier on an interlocked railway locomotive and tender, moreover, the tank and regasifier are interconnected and with the engine sections of the railway locomotive by gas pipelines , characterized in that the installation of the tank and regasifier on the coupled railway locomotive and tender is carried out in such a way that the tank is fastened to the tender, and the regasifier is mounted on the railway locomotive, the tank is connected by a gas pipeline through a detachable device to the regasifier, while gas supply to the railway locomotive is carried out at the outfit by replacing the tender with the empty tank attached to it with a tender attached to it with a gas filled tank disconnecting and connecting the gas pipeline between the tender and the locomotive.

The essence of the claimed invention is illustrated by drawings, which show, as an example, the implementation scheme of the proposed method at a gas station for tenders with cryogenic tanks with liquefied natural gas (Figure 1), as well as the implementation of the claimed method at an equipment point (Figure 2).

Figure 1 shows a schematic diagram of a gas station, including an inlet gas pipeline 1 with a stopcock 2, an installation for the preparation and liquefaction of natural gas 3 with commercial gas metering systems at the inlet and outlet and process equipment (not shown in Fig. 1), an outlet gas pipeline 4 with shut-off valves 5, 6, 7 and flexible pipelines 8 and 9, detachable devices 10 and 11, as well as tenders 12 and 13 with cryogenic tanks 14 and 15.

Implementation of the claimed method at a gas station is as follows.

Compressed natural gas (CNG) through the inlet gas pipe 1 through the shut-off valve 2 enters the installation 3, where according to the technological process it is cleaned, measured and liquefied. Liquefied natural gas (LNG) from the installation 3 through the gas outlet 4 and the shut-off valve 5 is supplied to the tank 14 through the shut-off valve 6, the flexible pipe 8 and the plug-in device 10. The shut-off valve 7 is closed. After filling the LNG tank 14, the shut-off valve 6 is closed, and the shut-off valve 7 is opened and the filling of the second LNG tank 15 is started through the pipe 4 through the shut-off valve 7, the flexible pipe 8 and the detachable device 11 in a similar manner.

It is not excluded and the simultaneous gas refueling of both tanks 14, 15 through open taps 6 and 7.

On the schematic diagram of the equipment point (Figure 2) shows three spare sections 16, 17 and 18 of the railway track. At site 16, tenders 12 or 13 are accumulated with tanks filled with gas at the gas station. Tenders 19 with empty tanks are accumulated on spare section 17, train arriving at a gas station, including a railway locomotive 20 (gas and diesel locomotive or gas turbo locomotive), tender 19 and freight train 21. All three spare sections of the railway track are interconnected with a gas station transitional railways to ensure the maneuvering of railway locomotives (gas and turbo locomotives) with tenders, and section 18 of the railway is connected to the main railway by following the cargo (Fig.2 is not shown).

Each tender 12 or 13 (FIG. 1), after filling the tanks with gas at the gas station, is disconnected from the installation 3 (FIG. 1) by means of detachable devices 10 and 11 (FIG. 1) and delivered from the gas station to the spare area 16 (FIG. 2) the railway track, and tenders 19 with empty tanks for another spare section 17 (Figure 2) of the railway track or to the gas station using the railway locomotive 20 (gas and diesel locomotive) (Figure 2).

Implementation of the claimed method at the outfit is as follows.

A train arriving at the outfit with cargo capacity 21 to replenish the gas supply drives to the spare section 18 of the railway track. A railway locomotive 20 (gas and diesel locomotive or gas turbo locomotive) with a tender 19 is uncoupled from the freight train 21. The tender 19 is delivered to the spare section 17 of the railway track, followed by the uncoupling of the tender 19 with the empty tank from the railway locomotive 20. After that, the railway locomotive 20 is moved to the spare section 16 of the railway track where they attach a tender 12 or 13 with a gas-filled tank to it. Next, the railway locomotive 20 with a tender 12 or 13 moves to a spare section 18 of the railway track and, after coupling to the cargo train 21, continues its movement along the route. Other maneuvering schemes at the outfit are also possible when replacing tenders, for example using shunting diesel locomotives.

The essence of the proposed technology is to exclude the replacement of cryogenic gas tanks at tenders, and to replace the tenders themselves with cryogenic tanks permanently fixed to them, to avoid frequent undocking of the regasifier and long communications connecting it to the motor sections of the locomotive by placing the regasifier with the equipment on the gas turbine or gas and diesel locomotive itself.

The implementation of the proposed method in comparison with the known will:

- reduce the idle time of the train for refueling;

- increase the volume of gas stored at the tender by increasing the capacity of the tank as a result of transferring the regasifier from the tender to the locomotive and ultimately increase the range;

- reduce capital costs for the creation of a fuel supply system for gas and diesel locomotives and gas turbines by reducing the number of regasifiers and communications when installed on locomotives instead of tenders;

- to increase the security of the fuel supply system for gas and diesel locomotives and gas turbines, as well as reduce operating costs.

These advantages are extremely important in the development of natural gas deposits, especially in the Far North, Siberia and the Far East, to ensure significant volumes of cargo transportation using cheaper and cleaner gas engine fuel in exchange for imported expensive diesel fuel.

Claims (1)

A method of block-modular equipment of a railway locomotive, including coupling a railway locomotive with a tender, installing a tank and regasifier on an interlocked railway locomotive and tender, wherein the tank and regasifier are interconnected and with the motor sections of the railway locomotive by gas pipelines, characterized in that the installation of the tank and regasifier on the interlocked the railway locomotive and the tender are carried out in such a way that the tank is fixed on the tender, and the regasifier is mounted on jelly nodorozhnom locomotive tank associated pipeline through the device with a releasable regazifikatorom, wherein the gas supply is carried out on the railway locomotive equipping tender point by replacing it with a fixed in the empty tank on the tender with mounted thereon a gas tank filled by disconnecting and connecting pipeline between the tender and the locomotive.

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