KR102075034B1 - Fuel gas supply system for locomotive engine - Google Patents

Abstract

The present invention relates to a fuel supply system for a locomotive engine. Fuel gas formed by vaporizing liquid fuel in a fuel tank mounted on a tank vehicle is supplied to an engine mounted on a locomotive and the supply of the fuel gas is safely cut off in case of emergency. Specifically, when a distance between the tank vehicle and the locomotive is sensed and an emergency such as a separation between the tank vehicle and the locomotive or departure of the tank vehicle or the locomotive from a track occurs, the fuel gas and a heat medium are prevented from leaking by safely blocking a fuel gas supply pipe supplying fuel from the tank vehicle to the locomotive, and the like.

Description

FUEL GAS SUPPLY SYSTEM FOR LOCOMOTIVE ENGINE

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fuel supply system for an engine of a locomotive. More particularly, a fuel supply for an engine of a locomotive, which supplies fuel gas vaporized with liquid fuel of a fuel tank mounted on a tank car to an engine mounted on a locomotive. It is about the system.

In general, a locomotive train refers to a train towed by a locomotive, the power for driving the train, that is, the engine is provided in the locomotive, the other train is towed to the locomotive without power.

Most locomotive engines use diesel engines.

In order to operate the engine for such a locomotive, the locomotive must be equipped with fuel for driving the engine.

Meanwhile, development of LNG locomotives using LNG as fuel to use low carbon energy LNG is in full swing.

On the other hand, LNG itself is a fuel of locomotive engines, but itself is also an energy source.

That is, LNG is also transported by a locomotive currently using a diesel engine.

In addition, LNG is a combustible material that causes a fire or the like when it is leaked.

In view of the above characteristics of LNG, a fuel supply system capable of supplying LNG to an engine of a locomotive is required.

Republic of Korea Patent No. 10-1814439 "Fuel Gas Supply System" (registered on Dec. 27, 2017)

The present invention has been made in order to solve the problems of the prior art as described above, to ensure the stable supply of fuel gas from the tank car equipped with the fuel tank to the engine locomotive equipped, and to quickly separate the tank car and the locomotive in an emergency We propose a fuel supply system for an engine of a locomotive that can safely shut off the supply of fuel gas.

In order to solve the above problems, the present invention provides a locomotive equipped with an engine; A fuel tank mounted on a tank vehicle connected to the rear of the locomotive and storing liquid fuel in an ultra low temperature state; A vaporizer provided in the tank car to vaporize the liquid fuel of the fuel tank and convert it into a gaseous fuel gas; A liquid fuel supply pipe connecting the fuel tank and the vaporizer to supply the liquid fuel stored in the fuel tank to the vaporizer; A fuel gas supply pipe provided at the tank car with one end connected to the carburetor for supplying fuel gas vaporized from the carburetor to the engine; A first emergency split type coupling provided at the other end of the fuel gas supply pipe; A flexible hose for fuel gas supply in the form of a flexible hose having one end connected to the first emergency split coupling and the other end connected to an engine side of the locomotive to supply fuel gas to the engine of the locomotive; A vaporization heat source supply unit provided in the tank car to supply a heat source necessary for vaporizing the liquid fuel in the vaporizer; A heat medium discharge pipe whose one end is connected to the heat source supply unit for vaporization; A 2-1 emergency separation type coupling provided at the other end of the heat medium discharging pipe; A heat medium inlet pipe whose one end is connected to the heat source supply unit for vaporization; A 2-2 emergency separation type coupling provided at the other end of the heat medium inlet pipe; A waste heat recovery unit provided to the locomotive so that the heat medium introduced into one end recovers waste heat generated by the engine of the locomotive and then flows out to the other end; A flexible hose for recovering the first waste heat in the form of a flexible hose having one end connected to the 2-1 emergency separation type coupling and the other end connected to one end of the waste heat recovery unit so that a heat medium is supplied to the waste heat recovery unit; A separation distance detecting device including a risk detecting unit detecting a danger according to a separation distance between the first fixing stand fixed to the tank vehicle and the second fixing stand fixed to the locomotive and the first fixing stand and the second fixing stand; And the first emergency separation coupling, the 2-1 emergency separation coupling, and the 2-2 emergency separation coupling are emergency separated by the result detected by the danger detection unit. do.

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In the above: an emergency valve for shutting off fuel supply is provided in the liquid fuel supply pipe; A first emergency shut-off valve is provided in the fuel gas supply pipe; The 2-1 emergency shutoff valve is provided in the heat medium discharge pipe; A second-second emergency shut-off valve is provided on the heat medium inlet pipe; A nitrogen gas cylinder is provided for supplying nitrogen gas to the tank car; The danger detection unit of the separation distance detecting device, one end is connected to the first fixing station and the other end is connected to the second fixing station, one end is connected to the first fixing station and the other end is connected to the second fixing station And a second cable having a length longer than that of the first cable, and separation signal generating means for generating a separation signal according to separation of the first cable or the second cable; The nitrogen gas cylinder supplies nitrogen gas to the fuel supply shutoff emergency valve so that the fuel supply shutoff emergency valve is closed when the separation signal generation means generates a separation signal according to the separation of the first cable; When the separation signal generating means generates a separation signal according to the separation of the second cable, the nitrogen gas cylinder closes the first emergency shutoff valve, the second-1 emergency shutoff valve, and the second-2 emergency shutoff valve. Supplying nitrogen gas to the first emergency shutoff valve, the second-first emergency shutoff valve, and the second-second emergency shutoff valve, and wherein the nitrogen gas cylinder is the first emergency split coupling and the second-1. Supplying nitrogen gas to the first emergency separation coupling, the second-first emergency separation coupling, and the second-2 emergency separation coupling so that the emergency separation coupling and the second-2 emergency separation coupling are emergency separated. To do; This is preferred.

In the above, the liquid fuel supply pipe is provided with a fuel pump, the fuel pump may be a gear driven pump (gear driven pump) operated by receiving the driving force generated from the axle of the tank car.

The vaporization heat source supply unit, the vaporizer supply pipe connecting the vaporizer inlet pipe and the vaporizer, and the vaporizer pump for connecting the vaporizer and the heat medium discharge pipe, and the heat medium pressure pump is provided. And a bypass pipe connecting the vaporizer supply pipe and the vaporizer recovery pipe and having a bypass valve, a heat medium tank in which a heat medium is stored, and a tank connection pipe connecting the heat medium tank and the vaporizer recovery pipe. It may be made, including.

As described above, the fuel supply system for an engine of a locomotive according to the present invention can stably supply fuel gas from a tank car equipped with a fuel tank to a locomotive equipped with an engine, and quickly separate a tank car and a locomotive in an emergency and provide fuel gas. The supply of can be safely cut off.

In particular, when an emergency occurs such as sensing the separation distance between the tank car and the locomotive, or when the tank car and the locomotive are separated or the tank car or the locomotive is off the track, the fuel gas supply pipe for supplying fuel to the locomotive from the tank car is safely shut off. By preventing the leakage of the heat medium, secondary accidents such as fire can be prevented.

1 is a block diagram of a fuel supply system for an engine of a locomotive according to an embodiment of the present invention.

DETAILED DESCRIPTION Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention. In the drawings, parts irrelevant to the description are omitted in order to clearly describe the present invention, and like reference numerals designate like parts throughout the specification. When any part of the specification is to "include" any component, which means that it may further include other components, except to exclude other components unless specifically stated otherwise.

1 is a block diagram of a fuel supply system for an engine of a locomotive according to an embodiment of the present invention.

In a fuel supply system for an engine of a locomotive according to an embodiment of the present invention, a locomotive equipped with an engine 210 in a tank car 1100 equipped with a fuel tank 110 in which liquefied natural gas (LNG), which is a fuel, is stored. It is for safely supplying the gaseous natural gas which is fuel gas to 200.

The locomotive 200 is equipped with an engine 210 that uses natural gas as fuel, and the locomotive 200 tow a tank car 100 connected to the rear end thereof.

The engine 210 of the locomotive 200 may be a dual fuel engine in which two fuels may be used according to embodiments. The engine 210 of the present embodiment is a single fuel engine using only one fuel.

The tank car 100 supplies a fuel gas to the engine 210 of the locomotive 200 while being connected to the rear of the locomotive 200 as a wagon (cargo train) on which the fuel tank 110 is mounted.

Several tank cars 100 may be sequentially connected to the locomotive 200, but this embodiment will be described based on the tank car 100 directly connected to the rear of the locomotive 200.

The fuel tank 110 stores liquid fuel in an ultra low temperature state, and in this embodiment, natural gas is stored in a liquid state.

In this embodiment, the LNG of the fuel tank 110 is used as fuel, but the LNG of the fuel tank 110 is also being transferred as cargo.

The tank car 100 is provided with a vaporizer 120 for vaporizing the liquid fuel in the liquid state stored in the fuel tank 110 to convert to the gaseous fuel gas. The vaporizer 120 of the present embodiment is a heat exchanger that circulates the heat medium carrying heat energy therein so as to exchange heat with the liquid fuel.

The vaporization heat source supply unit is provided in the tank car 100 to supply a heat source necessary for vaporizing the liquid fuel in the vaporizer 120.

The detailed structure of the heat source supply part for vaporization is mentioned later.

In this embodiment, the heat medium circulating inside the vaporizer 120, that is, the heat medium circulating the heat source supply for vaporization is glycol water that does not freeze easily even at low temperatures. The heating medium may be changed depending on the embodiment.

In order to supply the liquid fuel stored in the fuel tank 110 to the vaporizer 120, a liquid fuel supply pipe 130 connecting the fuel tank 110 and the vaporizer 120 is provided.

The liquid fuel supply pipe 130 is provided with an emergency shutdown valve 131 (emergency shutdown valve) for shutting off the liquid fuel supply to the vaporizer 120 in an emergency. The emergency shutoff valve 131 of the present embodiment is closed by nitrogen gas pressure when nitrogen gas is supplied in an emergency.

In addition, the fuel pump 132 is provided in the liquid fuel supply pipe 130. The fuel pump of the present embodiment is a gear driven pump operated by receiving a driving force generated from the axle of the tank vehicle 100.

Typically, a fuel pump is an electric pump that is powered and operated. However, the fuel pump 132 of the present embodiment adopts a gear driven pump, so that a separate device for supplying electric power to the fuel pump 132 is not necessary. When the tank vehicle 100 moves, the driving force from the axle is moved. It works with it.

In order to supply fuel gas vaporized from the vaporizer 120 to the engine 210, one end is connected to the vaporizer 120, and a fuel gas supply pipe 140 provided in the tank car 100 is provided.

The fuel gas supply pipe 140 is provided with a pressure control valve 143, a pressure transmitter 144, a temperature transmitter 145, and a first emergency shutoff valve 142.

In addition, a first emergency separation type coupling 141 is provided at the other end of the fuel gas supply pipe 140.

The pressure transmitter 144 detects the pressure of the fuel gas supply pipe 140 and transmits it to the pressure control valve 143, and the pressure control valve 143 detects the fuel gas supply pipe 140 detected by the pressure transmitter 144. Is controlled according to the pressure, so that the fuel gas having a predetermined pressure (that is, the fuel gas having the pressure required by the engine 210) is discharged from the fuel gas supply pipe 140.

The temperature transmitter 145 senses the temperature of the fuel gas supply pipe 140 and transmits it to a temperature control valve 153a which will be described later. The temperature control valve 153a controls its operation according to the transmitted temperature.

The first emergency shutoff valve 142 is closed by nitrogen gas pressure when nitrogen gas is supplied in an emergency.

The first emergency split coupling 141 will be described.

The following description applies to the 2-1 emergency separation coupling 161 and the 2-2 emergency separation coupling 171 as it is.

In general, the coupling is a connector for connecting one member and another member, and is also used to connect and disconnect pipes, tubes, pipes, and the like, especially for transporting a fluid such as gas or liquid.

Among the couplings for transporting fluids as described above, there is also an emergency release coupling (or breakaway coupling).

Emergency-separated couplings, as the name implies, are couplings designed to transfer fluids between two pipes and are designed to be separated from the beginning.

That is, in an emergency situation where a certain tension or bending load is generated, two emergency separation couplings connecting the pipes are separated before the load is reached to the point that the pipes are damaged. It can be blocked.

According to the embodiment, the emergency split coupling may be configured to be separated by a physical external force, but in this embodiment, the emergency split coupling operated by the pressure of nitrogen gas is adopted.

In this way, the fuel gas supply flexible hose 310 is provided to supply the fuel gas generated on the tank vehicle 100 side to the engine 210 of the locomotive 200.

The flexible hose 310 for fuel gas supply has one end connected to the first emergency split type coupling 141 and the other end connected to the engine 210 side of the locomotive 200.

Since the flexible hose 310 for fuel gas supply is in the form of a flexible hose, the flexible hose 310 may be flexibly flexed according to the relative movement occurring between the tank car 100 and the locomotive 200 which are separated from each other and move independently.

Hereinafter, the vaporization heat source supply unit and the related configuration will be described.

In the present embodiment, the heat medium directly circulates the vaporizer 120 provided in the tank car 100 and the waste heat recovery unit 220 provided in the engine 210 of the locomotive 200, and the locomotive 200 by the waste heat recovery unit 220. The waste heat generated by the engine 210 of the N) is absorbed, and the absorbed waste heat is used for the vaporization of the liquid fuel in the vaporizer 120.

However, this is only one embodiment, having a tank for storing the heat medium in the tank car 100, the heat medium is to circulate the vaporizer 120 and the auxiliary tank, and the heat medium is the auxiliary tank and waste heat recovery unit 220 It can also be configured to cycle.

In some cases, the first circulation pipe circulating the vaporizer 120, the second circulation pipe circulating the waste heat recovery unit 220, and the first circulation pipe and the second circulation pipe separate heat exchange It may also be configured to heat exchange with each other by the group.

However, in any case, the tank car 100 must be provided with a heat source supply unit for vaporization to supply a heat source to the carburetor 120, the locomotive 200 is a waste heat recovery unit 220 for recovering the waste heat of the engine 210 It should be provided, and also configured to connect the heat source supply unit for vaporization and waste heat recovery unit 220.

In this embodiment, the waste heat recovery unit 220 is for recovering the waste heat generated by the heat medium from the engine 210 of the locomotive 200, and the other end after the heat medium introduced into the waste heat is recovered from the engine of the locomotive. It is in the form of a heat exchange tube made to flow out.

The vaporization heat source supply unit is connected to the heat medium discharge pipe 160 and the heat medium inlet pipe 170, respectively.

The heat dissipation pipe 160 is provided with a 2-1 emergency shutoff valve 162 and a 2-1 emergency disconnect type coupling 161.

In addition, one end of the first waste heat recovery flexible hose 321 is connected to the second-first emergency separation type coupling 161 and the other end is connected to one end of the waste heat recovery unit 220 so that the heat medium is disposed in the waste heat recovery unit 220. To be supplied.

Since the first waste heat recovery flexible hose 321 is in the form of a flexible hose, it may be flexibly flexed according to the relative movement generated between the tank car 100 and the locomotive 200 which are separated from each other and independently move to some extent.

The 2-2 emergency shutoff valve 172 and the 2-2 emergency separation type coupling 171 are provided in the heat medium inflow pipe 170.

In addition, one end of the second waste heat recovery flexible hose 322 is connected to the second-second emergency separation coupling 171 and the other end is connected to the other end of the waste heat recovery unit 220 to recover waste heat from the waste heat recovery unit 220. The recovered heat medium is supplied to the heat source for vaporization.

The description of the 2-1 emergency shutoff valve 162 and the 2-2 emergency shutoff valve 172 will be omitted by referring to the description of the first emergency shutoff valve 142.

The description of the 2-1 emergency separation type coupling 161 and the 2-2 emergency separation type coupling 171 will be omitted by referring to the description of the first emergency separation type coupling 141.

Next, the vaporization heat source supply unit provided in the tank vehicle 100 will be described in detail.

In the present embodiment, the heat source supply unit for vaporization is connected to the vaporizer supply pipe 152 for connecting the heat medium inlet pipe 170 and the vaporizer 120, and the vaporizer 120 and the heat medium discharge pipe 160 to connect the heat medium. A bypass pipe 153 which connects a vaporizer vapor recovery pipe 151 provided with a pressurizing pump 151a, a vaporizer supply pipe 152 and a vaporizer vapor recovery pipe 151, and is provided with a bypass valve 153a. And a heat medium tank 154 in which the heat medium is stored, and a tank connection pipe 154c connecting the heat medium tank 154 and the vaporizer vapor recovery pipe 151, and the like, all of which are provided in the tank car 100. do.

The heat medium tank 154 stores glycol water, which is a heat medium. The heat medium tank 154 is connected to the vaporizer recovery pipe 151 and the like through the tank connection pipe 154c to absorb the volume change by expansion and contraction of the glycol water circulating in the vaporizer recovery pipe 151 and the like. .

The heat medium of the heat source supply part for vaporization is heated using the waste heat of an engine after the engine 210 is operated.

Since the heat medium cannot be heated before the engine 210 is operated, an electric heater 154b for heating the heat medium without using waste heat of the engine 210 is provided in the heat medium tank 154. That is, the liquid fuel passing through the vaporizer 120 is vaporized using heat generated by the heating of the electric heater 154b before the engine 210 is operated.

On the other hand, a fuel gas detector 154a is further provided in the heat medium tank 154. The fuel gas detector 154a detects the fuel gas leaked from the vaporizer 120 and shuts off the emergency supply shutoff valve 131. In addition, although not shown separately in the drawing, when the fuel gas detector 154a shuts off the emergency supply shutoff emergency valve 131 primarily, when a higher concentration of fuel gas is detected, the first, second, second, The 2-2 emergency shutoff valves 142, 162, and 172 may be blocked and the first, second, and second emergency split couplings 141, 161, and 171 may be controlled to be separated.

When the engine 210 is operated, the heat medium includes the vaporizer 120, the vaporizer return pipe 151, the heat medium discharge pipe 160, the first waste heat recovery flexible hose 321, and the waste heat recovery unit 220. 2 The waste heat recovery unit 220 recovers the waste heat generated by the engine while circulating the flexible hose 322 for waste heat recovery, the heat medium inflow pipe 170, the vaporizer supply pipe 152, and the vaporizer 120, and then the vaporizer. At 120, the heat necessary for vaporizing the liquid fuel is supplied.

In order to circulate the heat medium, the heat medium pressurizing pump 151a provided in the vaporizer recovering pipe 151 is a gear driven pump that is operated by receiving a driving force from the axle of the tank car 100, similar to the fuel pump 132 described above. gear driven pump).

Meanwhile, the bypass pipe 153 is normally closed by the temperature control valve 153a, and when the temperature of the fuel gas passing through the fuel gas supply pipe 140 is detected by the temperature transmitter 145 as being too high. The temperature control valve 153a opens and the heat medium circulates through the bypass pipe 153. As a result, the heating medium is prevented from being excessively heated, and the temperature of the fuel gas vaporized by the vaporizer 120 may be adjusted to suit the temperature of the fuel gas required by the engine 210.

The tank vehicle 100 is connected to the rear of the locomotive 200, and is towed by the locomotive 200, so when an accident such as the tank car 100 or the locomotive 200 leaves the track or is overturned, the liquid fuel or fuel gas or It should be possible to prevent the thermal medium from leaking.

That is, the supply of the liquid fuel is blocked, and the fuel gas and the heat medium are prevented from leaking, and the flexible hose such as the fuel gas supply flexible hose 310 is separated from the tank car 100 to prevent damage to other devices.

To this end, the present embodiment is provided with a separation distance detecting device 190 having a risk in accordance with the separation distance of the tank car 100 and the locomotive 200.

The separation distance detecting device 190 includes a first fixing stand 193 fixed to the tank car 100, a second fixing stand 194 fixed to the locomotive 200, a first fixing stand 193 and a second fixing stand ( It comprises a risk detection unit for detecting the risk in accordance with the separation distance between 194.

In the present embodiment, the danger detection unit of the separation distance detecting device 190 includes a first cable 191 connected at one end thereof to the first fixing stand 193 and the other end connected to the second fixing stand 194, and one end at the first fixing stand. The first cable 191 or the second cable 192 connected to the second cable 191 and the other end connected to the second fixing stand 194 and having a length longer than the first cable 191 When separated, it comprises a separation signal generating means for generating a separation signal accordingly.

The second cable 192 has a longer length than the first cable 191, and the tank car 100 and the locomotive 200 are caused to have an accident such as the tank car 100 and the locomotive 200 leave the track or overturn. When the distance is greater than a predetermined distance, the first cable 191 and the second cable 192 may be sequentially separated.

That is, when the separation distance between the tank car 100 and the locomotive 200 becomes long (that is, if the distance exceeds a predetermined distance), the first cable 191 is first separated from the first fixing stand 193 or the like, and the separation signal generating means. Generates a first cable separation signal, and when the separation distance between the tank car 100 and the locomotive 200 becomes longer, the second cable 192 is separated from the first fixing stand 193, and the like, and the separation signal generating means. Will generate a second cable disconnect signal.

That is, the present embodiment is divided into two areas of danger according to the distance between the tank car 100 and the locomotive 200.

Meanwhile, a nitrogen gas cylinder 180 for supplying nitrogen gas to the tank car 100 is provided. The nitrogen gas cylinder 180 may supply high pressure nitrogen gas of about 130 bar.

The nitrogen gas cylinder 180 is provided with a first nitrogen gas opening / closing valve 181 which is operated according to the separation signal of the first cable 191 to supply nitrogen gas to the fuel supply shutoff emergency valve 131. .

In addition, the nitrogen gas cylinder 180 may be operated according to the separation signal of the second cable 192 to supply nitrogen gas to close the first, second, and first emergency shutoff valves 142, 162, and 172. The second nitrogen gas on-off valve 182 and the second cable 192 are operated according to the separation signal of the first, second, and first emergency separation couplings 141, 161, and 171 for emergency separation. A third nitrogen gas open / close valve 182 is provided to supply nitrogen gas as much as possible.

Fuel supply system for the engine of the locomotive according to an embodiment of the present invention, the tank car 100 and the locomotive 200, the separation distance detection device 190, the fuel gas supply flexible hose 310, the first and second waste heat It is connected only by the flexible hoses 321 and 322 for recovery. Therefore, when an emergency occurs, various devices of the tank car 100 may be easily separated from the locomotive 200.

In addition, when the separation distance detection device 190 generates a separation signal of the first cable 191, nitrogen gas is supplied from the nitrogen gas cylinder 180 to the fuel supply blocking emergency valve 131, the emergency valve for fuel supply blocking 131 is closed to ensure the leakage of the liquid fuel.

In addition, when the separation distance detection device 190 generates a separation signal of the second cable 192, the nitrogen gas cylinder 180 to the first, 2-1, 2-2 emergency shutoff valves (142, 162, 172) The gas is supplied to close the first, second, first, and second emergency shutoff valves 142, 162, and 172, thereby reliably preventing the leakage of fuel gas and the heat medium.

In addition, when the separation distance detection device 190 generates a separation signal of the second cable 192, the first, 2-1, 2-2 emergency separation coupling ((141, 161, 171) in the nitrogen gas cylinder 180 Nitrogen gas is supplied to the first, 2-1, 2-2 emergency separation coupling (141, 161, 171) emergency separation, the fuel hose supply flexible hose 310, the first and second waste heat recovery flexible hose 321 and 322 are reliably separated from the tank car 100, and various devices can be protected safely.

The foregoing description of the invention is provided by way of illustration, and it will be understood by those skilled in the art that the present invention may be easily modified in other specific forms without changing the technical spirit or essential features of the present invention. .

Therefore, the embodiments described above are to be understood in all respects as illustrative and not restrictive. For example, each component described as a single type may be implemented in a distributed manner, and similarly, components described as distributed may be implemented in a combined form.

The scope of the present invention is shown by the following claims rather than the above description, and all changes or modifications derived from the meaning and scope of the claims and their equivalents should be construed as being included in the scope of the present invention. do.

100 tank car 110 fuel tank
120: carburetor
130: liquid fuel supply piping 131: emergency supply shutoff valve
132: fuel pump
140: fuel gas supply piping
141: first emergency disconnect coupling 142: first emergency shutoff valve
143: pressure control valve 144; Pressure transmitter
145 temperature transmitter
151: vaporizer recovery pipe 151a: heat medium pressurized pump
152: pipe for vaporizer supply 153: bypass pipe
153a: temperature control valve 154: heat medium tank
154c: Pipe for Tank Connection
160: heat medium discharge pipe 161: 2-1 emergency separation coupling
162: 2-1 emergency shutoff valve
170: heat medium inlet pipe 171: 2-2 emergency separation coupling
172: 2-2 emergency shutoff valve
180: nitrogen gas cylinder
190: separation distance detection device 191: first cable
192: second cable 193: first fixing station
194: 2nd fixed stand
200: locomotive 210: engine
220: waste heat recovery unit
310: flexible hose for fuel gas supply
321: flexible hose for the first waste heat recovery
322: flexible hose for the second waste heat recovery

Claims (5)

Locomotives with engines;
A fuel tank mounted on a tank vehicle connected to the rear of the locomotive and storing liquid fuel in an ultra low temperature state;
A vaporizer provided in the tank car to vaporize the liquid fuel of the fuel tank and convert it into a gaseous fuel gas;
A liquid fuel supply pipe connecting the fuel tank and the vaporizer to supply the liquid fuel stored in the fuel tank to the vaporizer;
A fuel gas supply pipe provided at the tank car with one end connected to the carburetor to supply fuel gas vaporized from the carburetor to the engine;
A first emergency split type coupling provided at the other end of the fuel gas supply pipe;
A flexible hose for fuel gas supply in the form of a flexible hose having one end connected to the first emergency split coupling and the other end connected to an engine side of the locomotive to supply fuel gas to the engine of the locomotive;
A vaporization heat source supply unit provided in the tank car to supply a heat source necessary for vaporizing the liquid fuel in the vaporizer;
A heat medium discharge pipe whose one end is connected to the heat source supply unit for vaporization;
A 2-1 emergency separation type coupling provided at the other end of the heat medium discharging pipe;
A heat medium inlet pipe whose one end is connected to the heat source supply unit for vaporization;
A 2-2 emergency separation type coupling provided at the other end of the heat medium inlet pipe;
The waste heat recovery unit is made to be discharged to the other end after recovering the waste heat generated by the engine of the locomotive, the waste heat recovery unit is provided in the locomotive;
A flexible hose for recovering the first waste heat in the form of a flexible hose having one end connected to the 2-1 emergency separation type coupling and the other end connected to one end of the waste heat recovery unit so that a heat medium is supplied to the waste heat recovery unit;
A second in the form of a flexible hose, one end of which is connected to the second-second emergency separation type coupling and the other end of which is connected to the other end of the waste heat recovery unit, so that the heat medium recovering waste heat from the waste heat recovery unit is supplied to the vaporization heat source supply unit. Flexible hose for waste heat recovery;
A separation distance detecting device including a risk detecting unit detecting a danger according to a separation distance between the first fixing stand fixed to the tank vehicle and the second fixing stand fixed to the locomotive and the first fixing stand and the second fixing stand;
It is made, including,
The first emergency split coupling, the 2-1 emergency split coupling, and the 2-2 emergency split coupling are emergency separated by the result detected by the danger detector. Fuel supply system.
delete According to claim 1:
An emergency valve for shutting off fuel supply is provided in the liquid fuel supply pipe;
A first emergency shut-off valve is provided in the fuel gas supply pipe;
The 2-1 emergency shutoff valve is provided in the heat medium discharge pipe;
A second-second emergency shut-off valve is provided on the heat medium inlet pipe;
A nitrogen gas cylinder is provided for supplying nitrogen gas to the tank car;
The danger detection unit of the separation distance detecting device, one end is connected to the first fixing station and the other end is connected to the second fixing station, one end is connected to the first fixing station and the other end is connected to the second fixing station And a second cable having a length longer than that of the first cable, and separation signal generation means for generating a separation signal according to separation of the first cable or the second cable;
The nitrogen gas cylinder supplies nitrogen gas to the fuel supply shutoff emergency valve so that the fuel supply shutoff emergency valve closes when the separation signal generation means generates a separation signal according to the separation of the first cable;
When the separation signal generating means generates a separation signal according to the separation of the second cable, the nitrogen gas cylinder closes the first emergency shutoff valve, the second-1 emergency shutoff valve, and the second-2 emergency shutoff valve. Supplying nitrogen gas to the first emergency shutoff valve, the second-first emergency shutoff valve, and the second-second emergency shutoff valve, and wherein the nitrogen gas cylinder is the first emergency split coupling and the second-1. Supplying nitrogen gas to the first emergency separation coupling, the second-first emergency separation coupling, and the second-2 emergency separation coupling so that the emergency separation coupling and the second-2 emergency separation coupling are emergency separated. To do;
A fuel supply system for an engine of a locomotive, characterized in that.
The method according to claim 1 or 3,
A fuel pump is provided in the liquid fuel supply pipe, and the fuel pump is a gear driven pump operated by receiving a driving force generated from the axle of the tank car, and the fuel supply system for the engine of the locomotive. .
The method according to claim 1 or 3,
The vaporization heat source supply unit, a vaporizer supply pipe for connecting the heat medium inlet pipe and the vaporizer, a vaporizer recovery pipe that connects the vaporizer and the heat medium discharge pipe and is provided with a heat medium pressure pump, and the vaporizer A bypass pipe connecting the supply pipe and the vaporizer recovery pipe and having a bypass valve, a heat medium tank in which a heat medium is stored, and a tank connection pipe connecting the heat medium tank and the vaporizer recovery pipe. A fuel supply system for an engine of a locomotive, characterized in that.

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