CA2540403C - Method and device for de-icing of trains - Google Patents
Method and device for de-icing of trains Download PDFInfo
- Publication number
- CA2540403C CA2540403C CA2540403A CA2540403A CA2540403C CA 2540403 C CA2540403 C CA 2540403C CA 2540403 A CA2540403 A CA 2540403A CA 2540403 A CA2540403 A CA 2540403A CA 2540403 C CA2540403 C CA 2540403C
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- Prior art keywords
- medium
- icing
- treatment medium
- train
- collecting
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
- B60S3/00—Vehicle cleaning apparatus not integral with vehicles
- B60S3/006—Vehicle cleaning apparatus not integral with vehicles specially adapted for railway vehicles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61K—AUXILIARY EQUIPMENT SPECIALLY ADAPTED FOR RAILWAYS, NOT OTHERWISE PROVIDED FOR
- B61K13/00—Other auxiliaries or accessories for railways
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)
Abstract
Method and device for de-icing of trains in which a treatment medium is sprayed against the underside of units in the train such as locomotive and carriages in order to remove ice which has been built up in the base frames of the units. As treatment medium heated glycol is used.
Description
Method and device for de-icing of trains The present invention relates to a method and device for de-icing of trains, wherein a medium is sprayed against the underside of the units in the train such as locomotive and carriages in order to remove ice which has been built up on the base frames of the units.
When trains are run during wintry conditions disturbances are often seen due to formation of ice around the brakes and bogie. With conventional de-icing systems it is today a constant problem with trains which have to be removed from service due to ice formation.
On a standard size train it takes about 10 hours to remove the ice which requires enormous quantities of energy with blowing hot air. In this conventional de-icing moisture always remains on all parts under the train. When the train thereafter runs out in degrees below freezing point ice crystals are formed immediately under the entire train. These have a pointed and spiny form in its structure which means that the snow immediately clings to them and starts to build up the ice. This combination with heated brakes and quick cooling means that the train quickly builds up the ice again.
The object of the invention is to provide a de-icing system in which the drawbacks of the conventional de-icing are eliminated.
This object is achieved in that the method and the device are characterized according to the following claims.
The invention will in the following be described in connection with an embodiment of a device for de-icing of trains shown in the drawings.
Figure 1 is schematically a flow chart of the device.
Figure 2 is a cross section through collecting tanks in the device and arranged on a track.
When trains are run during wintry conditions disturbances are often seen due to formation of ice around the brakes and bogie. With conventional de-icing systems it is today a constant problem with trains which have to be removed from service due to ice formation.
On a standard size train it takes about 10 hours to remove the ice which requires enormous quantities of energy with blowing hot air. In this conventional de-icing moisture always remains on all parts under the train. When the train thereafter runs out in degrees below freezing point ice crystals are formed immediately under the entire train. These have a pointed and spiny form in its structure which means that the snow immediately clings to them and starts to build up the ice. This combination with heated brakes and quick cooling means that the train quickly builds up the ice again.
The object of the invention is to provide a de-icing system in which the drawbacks of the conventional de-icing are eliminated.
This object is achieved in that the method and the device are characterized according to the following claims.
The invention will in the following be described in connection with an embodiment of a device for de-icing of trains shown in the drawings.
Figure 1 is schematically a flow chart of the device.
Figure 2 is a cross section through collecting tanks in the device and arranged on a track.
The device illustrated in Figure 1 and 2 comprises a collecting tank 3 designed to be arranged between the rails 2 in the de-icing area of a railway track and a collecting tank 1 to the left and a collecting tank 4 to the right of the rails 2. The tanks 1, 3 and 4 thereby have a length of e.g. 15 meters and are bolted to the sleepers S of the track by means of wood screws. The tank 1 has a width such as it lies between and with suitable space to the rails, while the tanks 3 and 4 also lie with a space to the rails and have a width such as to extend outside of the outer side of the train carriages. At the ends of the collecting tanks 1, 3 and 4 are connections 6a for the supply and 6b for the evacuation of a de-icing medium to and from the tanks.
According to the invention the de-icing medium is a hot glycol which is sprayed on the under sides of the train carriages via a number of nozzles or mouthpieces arranged on the edges of the tanks 1, 3 and 4 e.g. 30 nozzles on the length 15 meters. The glycol is stored in a tank 7 from which it is delivered to an oil pan or electric pan 8 for heating to approximately 90 . From the tank 7 the glycol is pumped via pumps 9, 10 to the connections 6a and nozzles (not shown) of the tanks 1, 3 and 4 in a continuous flow of glycol which is ejected from the tanks 1, 3 and 4. The heated tanks melt the falling ice on the way towards the connections 6b of the tanks. The evacuated glycol is supplied to a recirculation system 12 which cleans it in order to be used again in the device via a return pump 11 which returns the glycol to the tank 7. A power supply unit 13 is coupled to the pumps 9-11 and a control module controls the function of the pan 8, the pumps 9-11 and the recirculation system 12.
The glycol used is propylenglycol which is not inflammable, poisonous or lengthy noxious to the environment.
By using propylenglycol there is no formation of ice crystals under the train but instead one gets a slightly remoistured and somewhat "sticky" surface in which the snow does not easily adhere and this means that ice formation beneath the train is prevented in a very efficient way. Another very big advantage is the time factor. With present de-icing plants it can today take nearly 10 hours to de-ice a train with enormous consumption of energy. In the plant according to the invention the train runs in about 10 minutes above the plant with a speed of about 25 meters per minute and with very low consumption of energy.
If the plant (device) is used regularly in a preventive purpose on trains free from ice which shall run in areas with much snow this will prevent formation of ice in a very ,efficient way. With the system according to the invention it will thus be possible to run the trains during winter time without operation disturbances due to formation of ice around breaks and bogie. The plant shown may be placed anywhere along the track outdoors, it requires only support of current and is for the rest entirely self supporting and automatic.
According to the invention the de-icing medium is a hot glycol which is sprayed on the under sides of the train carriages via a number of nozzles or mouthpieces arranged on the edges of the tanks 1, 3 and 4 e.g. 30 nozzles on the length 15 meters. The glycol is stored in a tank 7 from which it is delivered to an oil pan or electric pan 8 for heating to approximately 90 . From the tank 7 the glycol is pumped via pumps 9, 10 to the connections 6a and nozzles (not shown) of the tanks 1, 3 and 4 in a continuous flow of glycol which is ejected from the tanks 1, 3 and 4. The heated tanks melt the falling ice on the way towards the connections 6b of the tanks. The evacuated glycol is supplied to a recirculation system 12 which cleans it in order to be used again in the device via a return pump 11 which returns the glycol to the tank 7. A power supply unit 13 is coupled to the pumps 9-11 and a control module controls the function of the pan 8, the pumps 9-11 and the recirculation system 12.
The glycol used is propylenglycol which is not inflammable, poisonous or lengthy noxious to the environment.
By using propylenglycol there is no formation of ice crystals under the train but instead one gets a slightly remoistured and somewhat "sticky" surface in which the snow does not easily adhere and this means that ice formation beneath the train is prevented in a very efficient way. Another very big advantage is the time factor. With present de-icing plants it can today take nearly 10 hours to de-ice a train with enormous consumption of energy. In the plant according to the invention the train runs in about 10 minutes above the plant with a speed of about 25 meters per minute and with very low consumption of energy.
If the plant (device) is used regularly in a preventive purpose on trains free from ice which shall run in areas with much snow this will prevent formation of ice in a very ,efficient way. With the system according to the invention it will thus be possible to run the trains during winter time without operation disturbances due to formation of ice around breaks and bogie. The plant shown may be placed anywhere along the track outdoors, it requires only support of current and is for the rest entirely self supporting and automatic.
Claims (20)
1. A method for de-icing a train having an underside portion, comprising the steps of:
a) heating a treatment medium;
b) spraying the treatment medium only upwardly and not downwardly against the underside portion of the train so as to form a sprayed treatment medium; and c) collecting the sprayed treatment medium for reuse so as to form a collected treatment medium.
a) heating a treatment medium;
b) spraying the treatment medium only upwardly and not downwardly against the underside portion of the train so as to form a sprayed treatment medium; and c) collecting the sprayed treatment medium for reuse so as to form a collected treatment medium.
2. The method as claimed in claim 1, wherein the treatment medium comprises glycol.
3. The method as claimed in claim 1, wherein said step of collecting the sprayed treatment medium is followed by the step of cleaning the collected treatment medium.
4. The method as claimed in claim 1, wherein the treatment medium comprises polypropylenglycol.
5. The method as claimed in claim 1, wherein said step of collecting the treatment medium further comprises collecting the treatment medium in a collection tank below the train.
6. The method as claimed in claim 5, wherein said step of collecting the treatment medium in a collection tank below the train further comprises collecting the treatment medium in a plurality of collecting tanks.
7. The method as claimed in claim 5, wherein said step of collecting the treatment medium in a collection tank below the train further comprises the step of evaporating water contained in the collected treatment medium.
8. The method as claimed in claim 1, wherein said step of heating a treatment medium further comprises heating the treatment medium to a temperature in an order of 90 degrees C.
9. The method as claimed in claim 1, wherein said step of collecting the sprayed treatment medium comprises collecting the sprayed treatment medium dripping from the underside portion of the train.
10. An apparatus for de-icing a train on a track, wherein the train has an underside, and wherein the track has sides, said apparatus comprising:
a) a heater for heating a de-icing medium;
b) a sprayer arrangement for spraying the underside of the train with the de-icing medium so as to form a sprayed de-icing medium, with said sprayer arrangement disposed proximate to the track and directed only upwardly and not downwardly;
c) at least one collection tank for collecting the sprayed de-icing medium so as to form a collected de-icing medium, with said at least one collection tank disposed proximate to the track; and d) re-circulating connections connecting said at least one collection tank, said heater, and said sprayer arrangement for re-circulating the collected de-icing medium.
a) a heater for heating a de-icing medium;
b) a sprayer arrangement for spraying the underside of the train with the de-icing medium so as to form a sprayed de-icing medium, with said sprayer arrangement disposed proximate to the track and directed only upwardly and not downwardly;
c) at least one collection tank for collecting the sprayed de-icing medium so as to form a collected de-icing medium, with said at least one collection tank disposed proximate to the track; and d) re-circulating connections connecting said at least one collection tank, said heater, and said sprayer arrangement for re-circulating the collected de-icing medium.
11. The apparatus as claimed in claim 10, wherein the de-icing medium comprises glycol.
12. The apparatus as claimed in claim 10, wherein the de-icing medium comprises polypropylenglycol.
13. The apparatus as claimed in claim 10, further comprising a plurality of collection tanks, with said plurality of collection tanks disposed proximate to the sides of the track.
14. The apparatus as claimed in claim 10, further comprising a cleaner connected to said re-circulating connections for cleaning the collected de-icing medium.
15. The apparatus as claimed in claim 10, further comprising a collection tank disposed between the sides of the track.
16. The apparatus as claimed in claim 10, further comprising a collection tank disposed alongside and disposed outwardly relative to the track.
17. A method for de-icing a train having an underside portion, comprising the steps of:
a) heating a treatment medium;
b) spraying the treatment medium against the underside portion of the train so as to form a sprayed treatment medium, with the sprayed treatment medium directed only in an upward direction and not in a downward direction;
c) collecting the sprayed treatment medium so as form a collected treatment medium; and d) re-circulating the collected treatment medium for reuse.
a) heating a treatment medium;
b) spraying the treatment medium against the underside portion of the train so as to form a sprayed treatment medium, with the sprayed treatment medium directed only in an upward direction and not in a downward direction;
c) collecting the sprayed treatment medium so as form a collected treatment medium; and d) re-circulating the collected treatment medium for reuse.
18. The method as claimed in claim 17, wherein the treatment medium comprises glycol.
19. An apparatus for de-icing a train on a track, wherein the train has an underside, said apparatus comprising:
a) a heater for heating a de-icing medium;
b) a sprayer arrangement for spraying the underside of the train with the de-icing medium so as to form a sprayed de-icing medium, with said sprayer arrangement disposed proximate to the track, and with said sprayer arrangement disposed only upwardly and not downwardly to direct a spray only in an upward direction and not in a downward direction;
c) at least one collection tank for collecting the sprayed de-icing medium so as to form a collected de-icing medium, with said at least one collection tank disposed proximate to the track; and d) re-circulating connections connecting said at least one collection tank, said heater, and said sprayer arrangement for re-circulating the collected de-icing medium.
a) a heater for heating a de-icing medium;
b) a sprayer arrangement for spraying the underside of the train with the de-icing medium so as to form a sprayed de-icing medium, with said sprayer arrangement disposed proximate to the track, and with said sprayer arrangement disposed only upwardly and not downwardly to direct a spray only in an upward direction and not in a downward direction;
c) at least one collection tank for collecting the sprayed de-icing medium so as to form a collected de-icing medium, with said at least one collection tank disposed proximate to the track; and d) re-circulating connections connecting said at least one collection tank, said heater, and said sprayer arrangement for re-circulating the collected de-icing medium.
20. The apparatus as claimed in claim 19, further comprises:
e) a control unit connected to said heater and said re-circulating connections; and f) a leakage sensor connected to said control unit.
e) a control unit connected to said heater and said re-circulating connections; and f) a leakage sensor connected to said control unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA2540403A CA2540403C (en) | 2006-03-20 | 2006-03-20 | Method and device for de-icing of trains |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA2540403A CA2540403C (en) | 2006-03-20 | 2006-03-20 | Method and device for de-icing of trains |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2540403A1 CA2540403A1 (en) | 2007-09-20 |
| CA2540403C true CA2540403C (en) | 2014-01-21 |
Family
ID=38520899
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2540403A Active CA2540403C (en) | 2006-03-20 | 2006-03-20 | Method and device for de-icing of trains |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2540403C (en) |
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2006
- 2006-03-20 CA CA2540403A patent/CA2540403C/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CA2540403A1 (en) | 2007-09-20 |
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| EEER | Examination request |