KR101673091B1 - Freeze prevention system for water line of train - Google Patents

Freeze prevention system for water line of train Download PDF

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Publication number
KR101673091B1
KR101673091B1 KR1020150120732A KR20150120732A KR101673091B1 KR 101673091 B1 KR101673091 B1 KR 101673091B1 KR 1020150120732 A KR1020150120732 A KR 1020150120732A KR 20150120732 A KR20150120732 A KR 20150120732A KR 101673091 B1 KR101673091 B1 KR 101673091B1
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South Korea
Prior art keywords
valve
pipe
water
drainage
vehicle
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KR1020150120732A
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Korean (ko)
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권희준
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권희준
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61D—BODY DETAILS OR KINDS OF RAILWAY VEHICLES
    • B61D35/00—Sanitation
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
    • E03B7/00—Water main or service pipe systems
    • E03B7/09—Component parts or accessories
    • E03B7/10—Devices preventing bursting of pipes by freezing
    • E03B7/12—Devices preventing bursting of pipes by freezing by preventing freezing

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  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Engineering & Computer Science (AREA)
  • Epidemiology (AREA)
  • General Health & Medical Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Water Supply & Treatment (AREA)
  • Fluid-Driven Valves (AREA)

Abstract

The present invention relates to a freeze protection system for a water supply device of a railway vehicle capable of preventing the water supply device of the railway vehicle from being frozen even in case of a cutoff of a power to the railway vehicle while a pipe water discharge or a total water discharge is not performed by drivers mistake. The freeze protection system includes: an air supply cutoff valve (50) formed in a rear end of a pneumatic pipe (25) connected to the top of a water tank (2) and supplying air pressure to the water tank (2) when the power is supplied and cutting off the air pressure supply when the power is cut off; an exhaust valve (54) exhausting compressed air inside the water tank (2) when the air pressure supply is cut off by the air supply cutoff valve (50); and a pipe water discharge maintaining electronic valve (60) positioned between a pipe water discharge electronic valve (14) and a pipe water discharge valve (15) and enabling the pipe water discharge valve (15) to continuously maintain a pipeline in the state before the power cutoff by supplying air pressure to the pipe water discharge valve (15) from the pipe water discharge electronic valve (14) when the power is supplied and cutting off the air pressure supply to the pipe water discharge valve (15) from the pipe water discharge electronic valve (14) when the power is cut off.

Description

[0001] The present invention relates to a freeze prevention system for a water supply device for railroad cars,

The present invention relates to a system for preventing freezing of a water supply device for a railway car, and more particularly, to a system for preventing freezing of a railway vehicle, and more particularly, To a system for preventing freezing of a railway water supply device for a railway vehicle, which can prevent the water from being frozen.

The railway vehicle is provided with a water supply device for supplying water to the toilet and washstand or dining car in the toilet. 1 is a piping diagram showing a water supply pipe of the water supply device for a railway car. Referring to FIG. 1, compressed air of 7 to 9 bar supplied from a pneumatic supply source 10 on the vehicle side is decompressed to 5 bar while passing through the air filter 11 and the second regulator 12, The pressure is reduced to the level of 1 bar by the second regulator 26 before reaching the water tank 2 through the drain electromagnetic valve 21 and the three-way valves 6 and 6, And pushes the water in the water tank 2, and the pressurized water reaches the washstand and the front end of the toilet in the toilet through the water supply pipes 32 and 33, and is in a standby state for use. Compressed air having passed through the first regulator 12 is branched into a pre-drainage electromagnetic valve 21 and a pipe drainage electromagnetic valve 14 to be supplied to the pre-drainage valve 22 and the pipe drainage valve 15, respectively.

On the other hand, when the three-way valves 6 and 6 are switched to the water supply position (exhaust position) in order to supply fresh water to the water tank 2, the compressed air 5bar in the air pipe 25 is supplied to the three- The water supply valve 28 and the overflow valve 29 connected to the rear end of the pneumatic pipe 25 are opened while the compressed air in the water tank 2 is simultaneously discharged through the overflow pipe 29, The inside of the water tank 2 becomes an atmospheric pressure state by exhausting to the outside of the vehicle through the drain pipe 36 and the drain pipe 38. Fresh water is supplied through the water supply source 8 disposed adjacent to the three- And a water supply valve 28, and is supplied to the water tank 2. On the other hand, when the supply of water to the water tank 2 is completed and the three-way valve 6,6 is switched to the normal position (supply position), the compressed air 5bar in the pneumatic pipe 24 is supplied to the pneumatic pipe The water supply valve 28 and the overflow valve 29 are closed and the compressed air depressurized to 1 bar by the second regulator 26 is supplied to the water tank 2, Becomes a normal driving condition and becomes water-supplyable to the toilet. The overflow pipe 36 connected to the overflow valve 29 is connected to the drain pipe 38 and the moisture in the compressed air of 7 to 9 bar supplied from the pneumatic supply source 10 is discharged through the air filter 11 And drained to the pipe (38).

On the other hand, when the pipes / drainage mode selection switch (not shown) installed in the vehicle interior panel is set to the pipe drainage mode in order to prevent the pipe from being frozen in winter or to check the indoor pipe, 14 are switched to open the pipe drainage valve 15 to the drainage position and the unillustrated atmospheric inflow electromagnetic valve located under the washstand is also opened so that the water remaining on the water supply pipe 33 directed to the toilet is discharged to the pipe drainage valve 15 to the outside of the vehicle through the drain pipes 34, 38. In addition, when the pipe / pre-drainage mode selection switch is set to the drainage mode for preventing winter frost in the winter season, the pre-drainage solenoid valve 21 is switched to open the drainage valve 22, The water supply valve 28 and the overflow valve 29 connected to the water tank 2 and the water storage tank 24 and 25 are opened so that the water tank 2 is at atmospheric pressure, The water remaining on the water pipes 32 and 33 is completely drained to the outside of the vehicle through the drain pipes 35 and 38 through the drain valve 22.

However, in the conventional apparatus for preventing freezing of a water supply apparatus for a railway vehicle, first, after the vehicle is shut down during the winter season, the driver turns off the power of the vehicle without operating the drainage mode selection switch by mistake The pneumatic pressure inside the water tank 2 is maintained at 1 bar for water supply so that the water is supplied to the final stage of the water supply pipe 33, that is, the automatic water supply valve of the toilet bowl and the toilet, 33) and the problem that the water in the indoor piping which is not shown is frozen and causes the room to crash

Second, even if the driver turns off the vehicle power after operating the pipe drainage mode selection switch by operating the pipe drainage mode selection switch, the drainage pipe solenoid valve 14 is switched to the initial (non-power supply) supply state again, Is returned from the drainage position to the water supply position and the water in the water tank 2 and the water supply pipe 32 reaches the automatic water supply valve of the toilet bowl and the wash bowl through the water supply pipe 33 again, .

Open Utility Model No. 2000-0013937 (July 15, 2000)

The present invention has been made in view of the problems of the conventional system for preventing the freezing of the water supply system for railway cars as described above, and it is an object of the present invention to provide a system for preventing the freezing of the water, The water at the rear end of the water supply pipe 33 is drained to the water level in the water tank so that it is possible to prevent the freezing of the pipe in the vehicle interior during the winter season.

According to one aspect of the present invention, compressed air is supplied from a vehicle-side pneumatic supply source 10 to the first regulator 12, the pre-drainage electromagnetic valve 21, the three-way valve 6, and the second regulator 26, The water in the water tank 2 is supplied to the water tank 2 through the pneumatic tubes 13, 20, 24 and 25 through the pneumatic tube 30) is connected to the pipe drainage solenoid valve (14);

The water supply source 8 connected to the external water supply pipe is connected to the water tank 2 via the water supply pipe 31 and the water supply valve 28 by opening and closing the three-way valves 6, The water supply pipes 32 and 33 connected to the lower portion of the water tank 2 are connected to the toilet 5 and the washstand 7 of the toilet via the pipe drainage valve 15 by the pipe drainage electromagnetic valve 14, The overflow pipe 36 connected to the upper portion of the overflow pipe 29 is connected to the drain pipe 38 opened to the atmosphere via the overflow valve 29 and the water supply valve 28 and the overflow valve 29 are connected to the pneumatic A water supply system operated by a pneumatic tube (41) branching off the pipe (25);

When the pipe / drainage mode selection switch 9 provided in the switchboard of the vehicle is set to the pipe drainage mode, the pipe drainage water solenoid valve 14 is switched to open the pipe drainage valve 15 to the drainage position, The atmospheric hydraulic solenoid valve 9 is also opened so that the water pipe 33 connected to the toilet and the water remaining in the indoor pipe are drained to the outside of the vehicle through the pipe pipe 34 and the drain pipe 38, The water drain valve 22 is opened and the water supply valve 28 and the overflow valve 29 are opened so that the pneumatic pressure in the water tank 2 is controlled by the overflow valve The air in the water supply pipes 32 and 33 including the water in the water tank 2 and the indoor pipe is discharged through the entire water discharge pipe 35 ) And the drain pipe 38 to be discharged to the outside of the vehicle In the frost protection system of ryangyong water supply equipment,

An air supply shutoff valve 50 for supplying air pressure to the water tank 2 when the vehicle is powered on and shutting off the air pressure when the vehicle is shut off, An exhaust valve 54 for exhausting the compressed air in the water tank 2 to the outside of the vehicle when the air supply cutoff valve 50 is cut off and a valve The air pressure is supplied from the pipe drainage electromagnetic valve 14 to the pipe drainage valve 15 when the vehicle is powered on and the pneumatic pressure directed from the pipe drainage electromagnetic valve 14 to the pipe drainage valve 15 is shut off when the vehicle is shut off, And a pipe drainage maintenance electromagnetic valve (60) for continuously maintaining the pipe in the state before the valve power is cut off by the valve (15).

According to another aspect of the present invention, the air supply shutoff valve 50 connected to the pneumatic pipe 25 at the front end of the second regulator 26 disconnects the air supply route toward the water tank 2, C), and the exhaust valve (54) is a three-way valve that is turned by the air supply shutoff valve (50).

According to another aspect of the present invention, the pipe drainage maintenance solenoid valve 60 is a 3/2 solenoid valve that is shut off (N / C) to the groundwater line when no power is supplied. / RTI >

According to the present invention, a supply shutoff valve 50 is provided at the rear end of the pneumatic pipe 25 connected to the water tank 2 to supply pneumatic pressure to the water tank 2 when the vehicle is powered, An exhaust valve 54 for exhausting the compressed air in the water tank 2 to the outside of the vehicle when the air shutoff valve 50 is shut off, The air pressure is supplied from the pipe drainage solenoid valve 14 to the pipe drainage valve 15 when the vehicle is powered on and the pneumatic pressure from the pipe drainage electromagnetic valve 14 to the pipe drainage valve 15 is blocked And a pipe drainage maintenance solenoid valve (60) for keeping the pipe drainage valve (15) in a state before the vehicle power shutdown is continuously maintained. Thus, when the driver accidentally operates the pipe drainage In the case of powering off the vehicle without taking action, The air supply shutoff valve 50 prevents the air pressure from being supplied to the water tank 2 and the exhaust valve 54 is opened in conjunction therewith to exhaust the air in the water tank 2 to the outside of the vehicle, The atmospheric pressure state and the atmospheric inflow solenoid valve 9 located below the washstand are also opened so that the water remaining in the water supply pipe 33 and the indoor pipe is lowered to the same level as the water in the water tank, can do.

In addition, when the vehicle power is shut off, the pipe drainage maintenance solenoid valve 60 blocks the air pressure directed from the pipe drainage solenoid valve 14 to the pipe drainage valve 15 so that the pipe drainage valve 15 is closed By maintaining the pipeline of

First, when the power source of the vehicle is shut off without performing the pipe drainage, the pipe drainage valve (15) keeps the water supply position before the vehicle power is shut off and the water remaining in the water supply pipe (33) Water to the same level as the water in the tank,

Second, when the power source of the vehicle is shut off in the state where the pipe drainage is performed, the pipe drainage valve 15 is kept in the drainage position so that the water supply pipe 33 and the indoor pipe are connected to the pipe drainage pipe 34 and the drain pipe 38 To the outside of the vehicle.

1 is a system configuration diagram of a conventional water supply device for a railway vehicle
2 is a block diagram of a system for preventing freezing of a water supply device for a railway vehicle according to an embodiment of the present invention

Hereinafter, preferred embodiments of the present invention will be described. 2 is a block diagram of a system for preventing freezing of a water supply device for a railway vehicle according to an embodiment of the present invention. As shown in the figure, according to the present invention, compressed air supplied from a vehicle-side pneumatic supply source 10 is reduced in pressure to 5 bar in the first regulator 12 via the air filter 11, Way valves 6 and 6 installed on both sides of the vehicle for the purpose of opening and closing the water supply holes 8 and 8 via the pneumatic pipe 24 branched through the over-power drain valve 21. Then reaches the second regulator 26 via the pneumatic pipe 25 and is depressurized again to about 1 bar level and then reaches the water tank 2 via the check valve 27 to pressurize the water in the water tank 2 Water is supplied to the indoor facility through the water supply pipes (32, 33). On the other hand, the pneumatic pipe 13 is connected to the pipe drainage electromagnetic valve 14 and the pipe drainage valve 15 through another pneumatic pipe 30 branched from the pneumatic pipe 20 at the front end of the front drainage electromagnetic valve 21 do.

The water supply and discharge units 8 and 8 detachably connected to an external water supply pipe are opened and closed by three-way valves 6 and 6. The water supplied through the water supply units 8 and 8 flows through the water supply pipe 31 And is supplied to the upper part of the water tank 2 through the water supply valve 28. The water discharged through the water supply pipe 32 at the lower portion of the water tank 2 is discharged through the water discharge pipe 15 of the three-way valve type, which is switched by the pipe drainage electromagnetic valve 14, (5) and the wash basin (7).

An overflow pipe 36 is connected to a drain pipe 38 drained to the outside of the vehicle through an overflow valve 29 and an overflow valve 29 Is a spring-loaded, single-acting ball valve that is connected in parallel to a pneumatic tube (41) branching in the pneumatic pipe (25) and driven by pneumatic pressure.

In addition to this structure, a pneumatic pressure is supplied to the water tank 2 at the time of applying the vehicle power to the front end of the second regulator 26 of the pneumatic pipe 25 connected to the upper part of the water tank 2, And the air supply shutoff valve 50 is provided as a solenoid-pilot operated type. The air supply shutoff valve 50 is a 4/2-electron Valve. An exhaust valve 54 connected between the second regulator 26 and the air supply line is provided between the air supply shutoff valve 50 and the water tank 2. The exhaust valve 54 is configured to discharge the air in the water tank 2 to the outside of the vehicle through the exhaust pipe 56 and the drain pipe 38 when the air supply cutoff valve 50 blocks the air pressure to the water tank 2 Thereby bringing the inside of the water tank 2 into an atmospheric pressure state.

A pipe drainage water holding valve 60 according to the present invention is connected between the pipe drainage solenoid valve 14 and the pipe drainage valve 15. This pipe drainage maintenance solenoid valve 60 is a solenoid-pilot operated type and is a 3/2 solenoid valve in which the conduit is blocked (N / C) during non-power supply. The pipe drainage maintenance solenoid valve 60 is connected to the pipe drainage valve 14 from the pipe drainage water solenoid valve 14 to the pipe drainage valve 15 in a state in which vehicle power is applied, that is, in a normal operation state (water supply state) When the vehicle power is shut off, the piping of the pipe drain valve 15 is disconnected from the pipeline before shutting down the vehicle by shutting off the pipeline from the pipe drainage electromagnetic valve 14 to the pipe drainage valve 15, State.

Describing the operation of the freeze prevention system of the present invention having such a structure,

When the driver unintentionally operates the pipe / full drain mode selection switch 18 during the winter season to shut off the power without performing the pre-drainage or the pipe drainage, the supply shutoff valve 50 connected to the rear end of the pneumatic pipe 25 The compressed air that has been supplied to the tank 2 is shut off and at this time the pneumatic pressure that is switched by the air supply shutoff valve 50 opens the exhaust valve 54 to exhaust the compressed air in the water tank 2 to the outside of the vehicle, The water remaining in the water supply pipe 33 and the indoor pipe is lowered to the same water level as the water in the water tank by opening the installed atmosphere inflow electromagnetic valve 9 so that the indoor water supply pipe can be prevented from being frozen.

In addition, when the vehicle power is shut off, the pipe drainage maintenance solenoid valve 60 blocks the air pressure directed from the pipe drainage solenoid valve 14 to the pipe drainage valve 15 so that the pipe drainage valve 15 is closed When the vehicle power is shut off without performing the pipe drainage, the pipe drainage valve 15 keeps the water supply position before the power off of the vehicle is maintained, And the water remaining in the indoor pipe is lowered to the same level as the water in the water tank. Second, when the vehicle power is shut off while the pipe drainage is performed, the pipe drainage valve (15) So that the water supply pipe 33 and the indoor pipe are kept open from the outside of the vehicle through the drain pipe 38.

Claims (4)

Compressed air is supplied from the pneumatic supply source 10 on the vehicle side via the first regulator 12, the pre-drainage electromagnetic valve 21, the three-way valves 6 and 6 and the second regulator 26 to the pneumatic tubes 13 and 20 24 and 25 to the water tank 2 to pressurize the water in the water tank 2 so that the pneumatic pipe 30 branched from the front end of the pre-drainage electromagnetic valve 21 is connected to the pipe drainage solenoid valve 14) < / RTI >
The water supply source 8 connected to the external water supply pipe is connected to the water tank 2 through the water supply pipe 31 and the water supply valve 28 by opening and closing the three-way valve 6, The water supply pipes 32 and 33 connected to the water tank 2 are connected to the toilet 5 and the washstand 7 of the toilet via the pipe drainage valve 15 by the pipe drainage electromagnetic valve 14, The overflow pipe 36 connected to the upper portion is connected to the drain pipe 38 opened to the atmosphere via the overflow valve 29 and the water supply valve 28 and the overflow valve 29 are connected to the pneumatic pipe 25), the water supply system being operated by a pneumatic tube (41);
When the pipe / drainage mode selection switch 18 provided in the switchboard of the vehicle is set to the pipe drainage mode, the pipe drainage electromagnetic valve 14 is switched to open the pipe drainage valve 15 to the drainage position, The installed atmosphere inflow solenoid valve 9 is also opened and water remaining in the indoor pipe is drained to the outside of the vehicle through the pipe pipe 34 and the drain pipe 38, The water drain valve 22 is opened and the water inlet valve 28 and the overflow valve 29 are opened and the atmosphere inlet electromagnetic valve 9 installed at the lower part of the washstand The water in the water tank 2 and the water pipes 32 and 33 and the water in the indoor pipe are drained to the outside of the vehicle through the entire drain pipe 35 and the drain pipe 38 As a result,
An air supply shutoff valve 50 for supplying air pressure to the water tank 2 when the vehicle is powered on and shutting off the air pressure when the vehicle is shut off, An exhaust valve 54 for exhausting the compressed air in the water tank 2 to the outside of the vehicle when the air supply cutoff valve 50 is cut off and a valve The air pressure is supplied from the pipe drainage electromagnetic valve 14 to the pipe drainage valve 15 when the vehicle is powered on and the pneumatic pressure directed from the pipe drainage electromagnetic valve 14 to the pipe drainage valve 15 is shut off when the vehicle is shut off, Further comprising a pipe drainage maintenance solenoid valve (60) for continuously maintaining the conduit in a state before the valve (15) is disconnected from the vehicle power source.
The air conditioner according to claim 1, wherein the supply air shutoff valve (50) cuts off supply of compressed air to the water tank (2) and the exhaust valve (54) closes the remaining compressed air in the water tank To thereby maintain the inside of the water tank at atmospheric pressure.
An air supply shut-off valve (50) connected to a pneumatic pipe (25) at the front end of the second regulator (26) is connected to the water tank (2) N / C), and the exhaust valve (54) is a three-way valve that is turned by the air supply shutoff valve (50).
3. The apparatus according to claim 1 or 2, wherein the pipe drainage maintenance solenoid valve (60) is located between a pipe drainage electromagnetic valve (14) and a pipe drainage valve (15) To the pipe drainage valve 15 to shut off the air pressure directed from the pipe drainage electromagnetic valve 14 to the pipe drainage valve 15 in the absence of the power source so that the pipe drainage valve 15 continuously supplies the pipe And a third solenoid valve for maintaining the first solenoid valve and the third solenoid valve.
KR1020150120732A 2015-08-27 2015-08-27 Freeze prevention system for water line of train KR101673091B1 (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112441033A (en) * 2019-08-29 2021-03-05 中车唐山机车车辆有限公司 Water supply and drainage system for railway vehicle
CN112441034A (en) * 2019-08-29 2021-03-05 中车唐山机车车辆有限公司 Liquid supply and drainage system for railway vehicle
CN112441043A (en) * 2019-08-29 2021-03-05 中车唐山机车车辆有限公司 Liquid supply and drainage system for railway vehicle
CN114919607A (en) * 2022-06-24 2022-08-19 宁波中车时代电气设备有限公司 Pressure maintaining type train water supply system and using method

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR0161685B1 (en) * 1990-12-28 1999-02-18 이경훈 Supply and drain system in a railcar
KR20000013937A (en) 1998-08-14 2000-03-06 추두련 Floor material containing charcoal
KR200198109Y1 (en) * 2000-05-17 2000-10-02 김삼수 Power supply device for pedestrian lights to indicate the walking time
KR20150131675A (en) * 2014-05-16 2015-11-25 한국철도공사 Water supply system of railway vehicle

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR0161685B1 (en) * 1990-12-28 1999-02-18 이경훈 Supply and drain system in a railcar
KR20000013937A (en) 1998-08-14 2000-03-06 추두련 Floor material containing charcoal
KR200198109Y1 (en) * 2000-05-17 2000-10-02 김삼수 Power supply device for pedestrian lights to indicate the walking time
KR20150131675A (en) * 2014-05-16 2015-11-25 한국철도공사 Water supply system of railway vehicle

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112441033A (en) * 2019-08-29 2021-03-05 中车唐山机车车辆有限公司 Water supply and drainage system for railway vehicle
CN112441034A (en) * 2019-08-29 2021-03-05 中车唐山机车车辆有限公司 Liquid supply and drainage system for railway vehicle
CN112441043A (en) * 2019-08-29 2021-03-05 中车唐山机车车辆有限公司 Liquid supply and drainage system for railway vehicle
CN112441043B (en) * 2019-08-29 2022-05-17 中车唐山机车车辆有限公司 Liquid supply and drainage system for railway vehicle
CN112441034B (en) * 2019-08-29 2023-05-23 中车唐山机车车辆有限公司 Liquid supply and drainage system for railway vehicle
CN114919607A (en) * 2022-06-24 2022-08-19 宁波中车时代电气设备有限公司 Pressure maintaining type train water supply system and using method
CN114919607B (en) * 2022-06-24 2024-05-28 株洲中车时代电气股份有限公司 Pressure-maintaining train water supply system and use method

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