EP0088340B1 - Forced draft cooling system for diesel-electric locomotive - Google Patents
Forced draft cooling system for diesel-electric locomotive Download PDFInfo
- Publication number
- EP0088340B1 EP0088340B1 EP83101989A EP83101989A EP0088340B1 EP 0088340 B1 EP0088340 B1 EP 0088340B1 EP 83101989 A EP83101989 A EP 83101989A EP 83101989 A EP83101989 A EP 83101989A EP 0088340 B1 EP0088340 B1 EP 0088340B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- resistor
- radiator
- units
- disposed
- dynamic brake
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61C—LOCOMOTIVES; MOTOR RAILCARS
- B61C5/00—Locomotives or motor railcars with IC engines or gas turbines
- B61C5/02—Arrangement or disposition of intakes and apparatus for supplying, circulating, and filtering air for combustion and engine-cooling purposes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B3/00—Engines characterised by air compression and subsequent fuel addition
- F02B3/06—Engines characterised by air compression and subsequent fuel addition with compression ignition
Definitions
- the present invention relates to a forced draft cooling system for a diesel-electric locomotive and more particularly to a cooling system for a dynamic brake resistor of a diesel-electric locomotive.
- a radiator apparatus for the cooling water for a diesel engine which comprises a radiator core, radiator fan and so forth and a dynamic brake apparatus having a resistor are generally disposed at different positions spaced in the longitudinal direction of the locomotive body. Therefore, the body length must be unfavorably long.
- the above arrangement permits both the radiator core and the resistor to be cooled by a single radiator fan as well as eliminating the need for enlarging the body length.
- JP-B2-54-13047 which has the features set forth in the first part of claim 1.
- This arrangement still has the following problems. Namely, since the radiator and the dynamic brake resistor are simultaneously cooled by forced draft, there is, as a matter of course, a need for an air flow larger than that for cooling only the radiator or the resistor.
- the cooling air passing through the radiator is subjected to a wind velocity, and since the draft area of the resistor is smaller than that of the radiator, the existence of the resistor causes the wind velocity distribution within the draft area of the radiator to be ununiform.
- radiator core fins vibrate in portions of the radiator where the wind velocities are particularly high, unfavorably producing vibration noises.
- the resistor since the resistor is installed within a limited space at the inner side of the radiator, it is extremely difficult to demount and remount the resistor in maintenance and inspection.
- a primary object of the invention to provide a forced draft cooling system for a diesel-electric locomotive in which a dynamic brake resistor is disposed at the inner side of a radiator, capable of preventing the production of vibration noises of radiator core fins as well as easily performing the maintenance and inspection of the dynamic brake resistor, thereby overcoming the above-mentioned disadvantage of the
- a main generator 2 On a locomotive body 1, a main generator 2, a diesel engine 3, and a radiator fan 4 driven through a radiator fan driving device 5 are disposed successively in the longitudinal direction of the body 1.
- a dynamic brake resistor 7 (see Fig. 3) is disposed at the inner side of the corresponding one of radiators 6 disposed on both side surfaces of the locomotive body 1, respectively.
- the resistor 7 is divided into a plurality of resistor units 7a, which are arranged so as to be distributed within the draft area of the corresponding radiator 6.
- each radiator 6 is constituted by three radiator units 6a, which are divided in the widthwise direction and arranged with a gap b (generally from 10 to 20 mm) for draft provided between the adjacent ones. Moreover, a gap c (generally from 50 to 70 mm) for draft is provided also between the radiator units 6a and a mounting frame 8 secured to the body 1.
- Each radiator 6 and the corresponding dynamic brake resistor 7 are disposed in parallel with each other with a gap H of from 50 to 300 mm provided therebetween.
- the resistor units 7a constituting the dynamic brake resistor 7 are arranged with a gap a for draft provided therebetween, and are fixed to a lower resistor support 9a and an upper resistor support 9b, which are fixed to the body 1, through resistor supporting insulators 10 arranged such that the longitudinal axes of the insulators disposed in the upper part of the body 1 are perpendicular to the plane of the resistor 7, while the insulators disposed in the lower parts of the body 1 are vertical so as to receive the load of the resistor 7.
- This mounting structure facilitates the mounting operation inside the body 1.
- Insulation covers 11 are provided above the supporting insulators 10, respectively, for protection of the latter in case rain or the like enters from the upper part of the body 1.
- Partition walls 12 for allowing the radiator room to be an independent room are disposed at the frontward and rearward portions of the body 1, respectively, and are inclined so as to taper toward the center of the radiator room in order to allow air to circulate excellently.
- a reference numeral 14 denotes each of baffle plates for guiding the air passing through the radiator toward the resistor units 7a, while a numeral 15 designates each of holes formed in each baffle plate 14 in order to regulate air flow.
- a fan 4 for draft is disposed in the central upper part of the body 1 and adapted to suck in a cooling air through the radiators 6 mounted on the body side surfaces and the dynamic brake resistors 7 and discharge the cooling air heated there from the body upper surface.
- the fan 4 is driven by the diesel engine 2 through a propeller shaft 20, a gear box 21 and a vertical shaft 22.
- the fan 4 may, as a matter of course, be driven by means of an independent drive motor.
- Vent holes 13 for taking in a cooling air for lowering the temperature of the gear box 21 are formed in the partition wall 12 remoter from the diesel engine 3.
- the units 7a constituting the dynamic brake resistor 7 are arranged so as to be distributed within the draft area of the radiator 6, the wind velocities within the draft area of the radiator 6 become relatively uniform, so that there will be no portion having a locally high wind velocity. Accordingly, it is possible to prevent production of vibration noises of the radiator core fins.
- the gap b is provided between the adjacent radiator units 6a, and each resistor unit 7a is disposed so as to correspond to the gap b. Therefore, the cooling air passing through the gap b, i.e., the cooling air not heated by the radiator units 6a, is made to directly blow against the corresponding resistor unit 7a, thereby allowing the resistor units 7a to be improved in cooling efficiency.
- each resistor unit 7a is compact and lightweight, so that it becomes extremely easy to demount and remount the resistor units 7a in a narrow space in maintenance and inspection.
- elements 19 shown in Fig. 6 become short in span, the sag of the elements 19 due to thermal expansion becomes small, so that there will be no short-circuit accident of the elements 19 due to sagging.
- the air flowing in through the radiators 6 and the resistors 7 has a high temperature, since it is heated by both of them.
- the vent holes 13 formed in the partition wall 13 remoter from the diesel engine 3.
- the vent holes 13 are adapted to allow the cooling air for cooling a compressor in a compressor room (not shown) to flow in therethrough. Thereby, the radiator room is cooled, and the above-mentioned problem can be solved.
- the dynamic brake resistor is divided into a plurality of units and arranged so as to be distributed within the draft area of the radiator, the wind velocities of the cooling air passing through the radiator are uniformed, so that there will be no portion having an extremely high wind velocity. Accordingly, it is possible to prevent production of vibration noises of the radiator core fins.
- each unit is compact and lightweight. Therefore, it becomes easy to demount and remount the resistor units in maintenance and inspection and moreover, it is possible to prevent a short-circuit accident of the elements due to the sagging thereof.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Details Of Resistors (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Description
- The present invention relates to a forced draft cooling system for a diesel-electric locomotive and more particularly to a cooling system for a dynamic brake resistor of a diesel-electric locomotive.
- In a typical conventional diesel-electric locomotive, a radiator apparatus for the cooling water for a diesel engine which comprises a radiator core, radiator fan and so forth and a dynamic brake apparatus having a resistor are generally disposed at different positions spaced in the longitudinal direction of the locomotive body. Therefore, the body length must be unfavorably long.
- As a means for overcoming the above disadvantage, such an arrangement has been proposed in which the radiator core is disposed on a side surface of the body, while the radiator fan is disposed in the center thereof, and the dynamic brake resistor is disposed above the radiator fan (compare DE-B-1 940 429).
- The above arrangement permits both the radiator core and the resistor to be cooled by a single radiator fan as well as eliminating the need for enlarging the body length.
- However, since the resistor is exposedly disposed on the upper surface of the body, elements of the resistor which become high in temperature and supporting insulators thereof are undesirably exposed to rainwater to shorten the life thereof. In order to overcome these disadvantages, another arrangement has been proposed (JP-B2-54-13047) which has the features set forth in the first part of claim 1. This arrangement, however, still has the following problems. Namely, since the radiator and the dynamic brake resistor are simultaneously cooled by forced draft, there is, as a matter of course, a need for an air flow larger than that for cooling only the radiator or the resistor. Consequently, the cooling air passing through the radiator is subjected to a wind velocity, and since the draft area of the resistor is smaller than that of the radiator, the existence of the resistor causes the wind velocity distribution within the draft area of the radiator to be ununiform. For the above reasons, radiator core fins vibrate in portions of the radiator where the wind velocities are particularly high, unfavorably producing vibration noises. In addition, since the resistor is installed within a limited space at the inner side of the radiator, it is extremely difficult to demount and remount the resistor in maintenance and inspection.
- It is, therefore, a primary object of the invention to provide a forced draft cooling system for a diesel-electric locomotive in which a dynamic brake resistor is disposed at the inner side of a radiator, capable of preventing the production of vibration noises of radiator core fins as well as easily performing the maintenance and inspection of the dynamic brake resistor, thereby overcoming the above-mentioned disadvantage of the
- This object is met, according to the invention, by the forced draft cooling system defined in claim 1.
- The above and other objects, features and advantages of the invention will become clear from the following description of the preferred embodiment taken in conjunction with the accompanying drawings.
-
- Fig. 1 is a plan view of the whole of a diesel-electric locomotive employing a cooling system for a dynamic brake resistor thereof in accordance with a preferred embodiment of the invention;
- Fig. 2 is a side elevational view of the diesel-electric locomotive shown in Fig. 1;
- Fig. 3 is a plan view of a radiator part of the diesel-electric locomotive shown in Fig. 1;
- Fig. 4 is a sectional view taken along a line IV-IV of Fig. 3;
- Fig. 5 is a sectional view taken along a line V-V of Fig. 3; and
- Fig. 6 is an enlarged view of part VI of Fig. 5.
- On a locomotive body 1, a main generator 2, a diesel engine 3, and a
radiator fan 4 driven through a radiatorfan driving device 5 are disposed successively in the longitudinal direction of the body 1. - A dynamic brake resistor 7 (see Fig. 3) is disposed at the inner side of the corresponding one of
radiators 6 disposed on both side surfaces of the locomotive body 1, respectively. Theresistor 7 is divided into a plurality ofresistor units 7a, which are arranged so as to be distributed within the draft area of thecorresponding radiator 6. - As will be apparent from Fig. 3, each
radiator 6 is constituted by threeradiator units 6a, which are divided in the widthwise direction and arranged with a gap b (generally from 10 to 20 mm) for draft provided between the adjacent ones. Moreover, a gap c (generally from 50 to 70 mm) for draft is provided also between theradiator units 6a and amounting frame 8 secured to the body 1. Eachradiator 6 and the correspondingdynamic brake resistor 7 are disposed in parallel with each other with a gap H of from 50 to 300 mm provided therebetween. Theresistor units 7a constituting thedynamic brake resistor 7 are arranged with a gap a for draft provided therebetween, and are fixed to alower resistor support 9a and anupper resistor support 9b, which are fixed to the body 1, throughresistor supporting insulators 10 arranged such that the longitudinal axes of the insulators disposed in the upper part of the body 1 are perpendicular to the plane of theresistor 7, while the insulators disposed in the lower parts of the body 1 are vertical so as to receive the load of theresistor 7. This mounting structure facilitates the mounting operation inside the body 1. Insulation covers 11 are provided above the supportinginsulators 10, respectively, for protection of the latter in case rain or the like enters from the upper part of the body 1.Partition walls 12 for allowing the radiator room to be an independent room are disposed at the frontward and rearward portions of the body 1, respectively, and are inclined so as to taper toward the center of the radiator room in order to allow air to circulate excellently. Areference numeral 14 denotes each of baffle plates for guiding the air passing through the radiator toward theresistor units 7a, while anumeral 15 designates each of holes formed in eachbaffle plate 14 in order to regulate air flow. - A
fan 4 for draft is disposed in the central upper part of the body 1 and adapted to suck in a cooling air through theradiators 6 mounted on the body side surfaces and thedynamic brake resistors 7 and discharge the cooling air heated there from the body upper surface. Thefan 4 is driven by the diesel engine 2 through apropeller shaft 20, agear box 21 and avertical shaft 22. Thefan 4 may, as a matter of course, be driven by means of an independent drive motor.Vent holes 13 for taking in a cooling air for lowering the temperature of thegear box 21 are formed in thepartition wall 12 remoter from the diesel engine 3. - According to the above arrangement, since the
units 7a constituting thedynamic brake resistor 7 are arranged so as to be distributed within the draft area of theradiator 6, the wind velocities within the draft area of theradiator 6 become relatively uniform, so that there will be no portion having a locally high wind velocity. Accordingly, it is possible to prevent production of vibration noises of the radiator core fins. Moreover, in the above embodiment, the gap b is provided between theadjacent radiator units 6a, and eachresistor unit 7a is disposed so as to correspond to the gap b. Therefore, the cooling air passing through the gap b, i.e., the cooling air not heated by theradiator units 6a, is made to directly blow against thecorresponding resistor unit 7a, thereby allowing theresistor units 7a to be improved in cooling efficiency. Furthermore, since thedynamic brake resistor 7 is divided into a plurality of units, eachresistor unit 7a is compact and lightweight, so that it becomes extremely easy to demount and remount theresistor units 7a in a narrow space in maintenance and inspection. In addition, sinceelements 19 shown in Fig. 6 become short in span, the sag of theelements 19 due to thermal expansion becomes small, so that there will be no short-circuit accident of theelements 19 due to sagging. - It is to be noted that although the dynamic brake resistor on each side is divided into two in the above-described embodiment, it is possible to divide the resistor into three or more.
- Moreover, if the gap c is provided also between each
radiator 6 and thecorresponding mounting frame 8, a cooling air easily flows in also through the gap c, thereby allowing a more appropriate air flow to be obtained. - Furthermore, the air flowing in through the
radiators 6 and theresistors 7 has a high temperature, since it is heated by both of them. - Therefore, there is a possibility that the heated air may have adverse effects on such peripheral devices as the radiator
fan driving device 5, theradiator fan 4 and so forth. Provided in order to eliminate such a possiblity are thevent holes 13 formed in thepartition wall 13 remoter from the diesel engine 3. thevent holes 13 are adapted to allow the cooling air for cooling a compressor in a compressor room (not shown) to flow in therethrough. Thereby, the radiator room is cooled, and the above-mentioned problem can be solved. - As has been described, according to the invention, since the dynamic brake resistor is divided into a plurality of units and arranged so as to be distributed within the draft area of the radiator, the wind velocities of the cooling air passing through the radiator are uniformed, so that there will be no portion having an extremely high wind velocity. Accordingly, it is possible to prevent production of vibration noises of the radiator core fins. In addition, since the dynamic brake resistor is divided into a plurality of units, each unit is compact and lightweight. Therefore, it becomes easy to demount and remount the resistor units in maintenance and inspection and moreover, it is possible to prevent a short-circuit accident of the elements due to the sagging thereof.
- Although the invention has been described through specific terms, it is to be noted here that the described embodiment is only illustrative and not exclusive, and the invention covers all possible changes and modifications imparted to the described embodiment within the scope of spirit of the invention which is limited solely by the appended claims.
Claims (9)
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP57033915A JPS58152650A (en) | 1982-03-05 | 1982-03-05 | Fixture of resistor for dynamic brake of diesel electric locomotive |
JP33915/82 | 1982-03-05 | ||
JP102210/82 | 1982-06-16 | ||
JP10221082A JPS58221762A (en) | 1982-06-16 | 1982-06-16 | Fixture of resistor for dynamic brake of diesel electric locomotive |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0088340A1 EP0088340A1 (en) | 1983-09-14 |
EP0088340B1 true EP0088340B1 (en) | 1986-11-12 |
Family
ID=26372682
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP83101989A Expired EP0088340B1 (en) | 1982-03-05 | 1983-03-01 | Forced draft cooling system for diesel-electric locomotive |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0088340B1 (en) |
CA (1) | CA1188155A (en) |
DE (1) | DE3367567D1 (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2609954B1 (en) * | 1987-01-27 | 1990-05-18 | Alsthom | DEVICE FOR VENTILATING BRAKE AND / OR STARTING RHEOSTATS OF A LOCOMOTIVE |
CN102392727A (en) * | 2011-11-30 | 2012-03-28 | 中国北车集团大连机车研究所有限公司 | Integrated cooling bag for diesel locomotives and installation method thereof |
US9815374B2 (en) | 2014-09-25 | 2017-11-14 | Dayton-Phoenix Group, Inc. | Braking grid cooling system |
CN106558379B (en) * | 2015-10-12 | 2018-10-02 | 西安铁路信号有限责任公司 | A kind of transition Duct design computational methods |
CN109296437A (en) * | 2018-08-31 | 2019-02-01 | 中车大连机车车辆有限公司 | For the cooling device of rail vehicle, control method and controller |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5413047B2 (en) * | 1973-10-12 | 1979-05-28 |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1108721B (en) * | 1957-02-08 | 1961-06-15 | Voith Gmbh J M | Cooling system designed for rail vehicles with an internal combustion engine |
DE1151270B (en) * | 1960-06-15 | 1963-07-11 | Siemens Ag | Arrangement for the ventilation of braking resistors and oil coolers on locomotives, especially rail locomotives |
DE1940429B2 (en) * | 1969-08-08 | 1971-02-25 | Atlas Mak Maschb Gmbh | Cooling system for diesel-electric locomotives |
-
1983
- 1983-03-01 DE DE8383101989T patent/DE3367567D1/en not_active Expired
- 1983-03-01 EP EP83101989A patent/EP0088340B1/en not_active Expired
- 1983-03-03 CA CA000422814A patent/CA1188155A/en not_active Expired
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5413047B2 (en) * | 1973-10-12 | 1979-05-28 |
Also Published As
Publication number | Publication date |
---|---|
EP0088340A1 (en) | 1983-09-14 |
DE3367567D1 (en) | 1987-01-02 |
CA1188155A (en) | 1985-06-04 |
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