A locomotive or railcar cooling system

Abstract

The application discloses a locomotive or motor train cooling system, which comprises a radiator assembly, a fan box, a fan set, a load-bearing installation framework, a cooling liquid pipeline and a pump; the pump is connected with the radiator assembly through the cooling liquid pipeline; the load-bearing installation framework comprises a first-level framework, a second-level framework and a damping assembly; the fan box and the fan set are rigidly connected with the first-level framework; the radiator assembly is rigidly connected with the second-level framework; and the first-level framework is elastically connected with the second-level framework through the damping assembly. The locomotive or motor train cooling system disclosed by the application realizes a second-level installation damping structure of the cooling system due to the arrangement of the load-bearing installation framework, effectively absorbs and inhibits the transmission of fan vibration, greatly reduces the structural noise of the cooling system, improves the comfort of passengers, avoids the possibility of mutual scratching caused by the asynchronous vibration of the fan and the fan box, the fan box does not bear the weight of the fan set, the stress of the box is reduced, the risk of box cracking is reduced, and the reliability is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of rail transit heat exchange technology, in particular to a locomotive or motor train unit cooling system. BACKGROUND

[0002] The cooling system of an electric locomotive or motor train unit mainly consists of a radiator, a fan set, a pump, cooling liquid pipelines and a load-bearing installation framework. The fan set (including an impeller, a shaft disc and a motor, the impeller and the shaft disc are assembled together to form an impeller assembly, and the impeller assembly is installed on the motor shaft extension through the shaft disc) is internally provided with rotating parts. When the cooling system is working, the unbalance of the rotating parts will cause the fan to vibrate. This vibration is transmitted to the load-bearing installation framework and then to other parts of the cooling system or the train body. If the speed / acceleration of this vibration reaches a certain value, it will affect the reliability of the cooling system on the one hand and the comfort of passengers on the other hand.

[0003] At present, most of the cooling systems of electric locomotives or motor train units are suspended under the train, and the fan set and the load-bearing installation framework are connected rigidly, and the load-bearing installation framework and the train body are connected elastically. This connection and installation method can reduce the transmission of vibration between the cooling system and the train body to a certain extent, and meet the requirements of passenger comfort. However, the vibration generated by the rotating parts during operation will be transmitted to other parts of the cooling system through the rigid connection. When the fan vibration is large, the structural reliability of the cooling system is reduced, and in severe cases, the framework may be broken, the radiator may leak oil, and the safe and reliable operation of the train may be seriously affected.

[0004] In addition, in the design of some cooling systems, a damping structure is provided between the motor mounting seat of the fan set and the load-bearing installation framework, but the fan box and the load-bearing installation framework are rigidly connected. This solves the problem of vibration transmission between the fan set and the load-bearing installation framework, but one rigid connection and one elastic connection make the vibration of the fan box and the impeller placed in the fan box out of sync. When the train is running / the fan set is operating, the vibration of the fan set and the fan box out of sync causes the fan impeller and the fan box to collide, which also affects the safe and reliable operation of the train.

[0005] In addition, in the design of some cooling systems, a damping structure is provided between the motor mounting seat of the fan set and the load-bearing installation framework, but the fan box and the load-bearing installation framework are rigidly connected. This solves the problem of vibration transmission between the fan set and the load-bearing installation framework, but one rigid connection and one elastic connection make the vibration of the fan box and the impeller placed in the fan box out of sync. When the train is running / the fan set is operating, the vibration of the fan set and the fan box out of sync causes the fan impeller and the fan box to collide, which also affects the safe and reliable operation of the train. SUMMARY

[0006] The present application is directed to the above technical problems, and provides a locomotive or motor train unit cooling system.

[0007] The technical means adopted by the present application are as follows:

[0008] A locomotive or motor train cooling system comprises a radiator assembly, a fan box, a fan set, a load-bearing installation framework, a cooling liquid pipeline and a pump.

[0009] The pump is connected with the radiator assembly through the cooling liquid pipeline.

[0010] The load-bearing installation framework comprises a primary framework, a secondary framework and a damping assembly.

[0011] The fan box and the fan set are respectively rigidly connected with the primary framework.

[0012] The radiator assembly is rigidly connected with the secondary framework.

[0013] The primary framework and the secondary framework are elastically connected through the damping assembly.

[0014] Further, the damping assembly comprises a rubber stack, an outer sleeve installation plate, an inner sleeve and an inner sleeve pad plate.

[0015] The outer sleeve installation plate is rigidly connected on the primary framework, and the inner sleeve and the inner sleeve pad plate are rigidly connected on the secondary framework.

[0016] The outer sleeve installation plate is sleeved on the inner sleeve, and the outer sleeve installation plate and the inner sleeve are elastically connected through the rubber stack.

[0017] Further, the outer sleeve installation plate comprises an outer sleeve installation plate fixed part and an outer sleeve installation plate connecting part, the outer sleeve installation plate fixed part is rigidly connected with the primary framework, and the outer sleeve installation plate connecting part is a sleeve structure.

[0018] The inner sleeve comprises an inner sleeve fixed part and an inner sleeve connecting part, the inner sleeve connecting part is a sleeve structure, and the inner sleeve connecting part is rigidly connected with the secondary framework.

[0019] The outer sleeve installation plate connecting part is sleeved outside the inner sleeve connecting part, and a rubber stack installation space is formed between the outer sleeve installation plate connecting part and the inner sleeve connecting part, and the rubber stack is fixedly installed in the rubber stack installation space.

[0020] Further, the fan set comprises an impeller assembly, a motor and a motor installation seat, the motor is a double-shaft extension motor, the double-shaft extension motor is rigidly connected on the primary framework through the motor installation seat, and both ends of the double-shaft motor are connected with the impeller assembly.

[0021] The heat sink assembly and the fan box body are both provided in two groups, and the two groups of heat sink assemblies and fan box bodies are symmetrically arranged at two ends of the double-shaft extension motor, the fan box body is rigidly connected to the primary frame through a fan box body mounting seat, the heat sink assembly is arranged at the end of the fan box body opposite to the double-shaft extension motor, and the heat sink assembly is rigidly connected to the secondary frame through a heat sink mounting seat.

[0022] The two groups of heat sink assemblies are connected through a cooling liquid pipeline.

[0023] Further, the inner fins of the cooling liquid channel of the heat sink core of the heat sink assembly are large-ripple-based oblique cut composite fins.

[0024] The inner fins of the air channel of the heat sink core of the heat sink assembly are variable-pitch ripple fins.

[0025] Further, an elastic sealing member is arranged between the heat sink assembly and the fan box body.

[0026] Further, the elastic sealing member is a rubber plate / rubber strip.

[0027] Further, an air filter is arranged at the air inlet end of the heat sink assembly.

[0028] Compared with the prior art, the locomotive or motor train cooling system disclosed by the application has the following beneficial effects: the locomotive or motor train cooling system disclosed by the application is provided with a load-bearing mounting frame, the load-bearing mounting frame comprises a primary frame, a secondary frame and a damping assembly, and the secondary mounting and damping structure of the locomotive or motor train cooling system is realized through the load-bearing mounting frame, so that the primary frame and the secondary frame are elastically connected through the rubber stack in the damping assembly, the transmission of fan vibration is absorbed and inhibited, the structural noise of the cooling system is greatly reduced, and the comfort of passengers is improved. When the train is running and / or the fan is running, the fan and the fan box body vibrate synchronously, the possibility of collision between the fan impeller and the fan box body caused by asynchronous vibration of the fan and the fan box body is avoided, the fan box body does not bear the weight of the fan set, the stress of the fan box body is reduced, the risk of cracking of the fan box body is greatly reduced, and the operation reliability of the cooling system is improved. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 It is a schematic diagram of the overall structure of the locomotive or motor train cooling system disclosed by the application (rear end).

[0030] Figure 2 It is a schematic diagram of the overall structure of the locomotive or motor train cooling system disclosed by the application (front end).

[0031] Figure 3 It is a schematic diagram of the structure of the load-bearing mounting frame in the application.

[0032] Figure 4 The schematic diagram of the explosion structure of the load-bearing installation framework in the application;

[0033] Figure 5 The schematic diagram of the shock-absorbing component structure in the load-bearing installation framework in the application;

[0034] Figure 6 The schematic diagram of the oblique cut composite fin based on large corrugation in the radiator core cooling liquid channel in the radiator assembly of the locomotive or motor train cooling system disclosed in the application;

[0035] Figure 7 The schematic diagram of the variable-pitch corrugated fin structure in the radiator core air channel in the radiator assembly of the locomotive or motor train cooling system disclosed in the application.

[0036] In the figure: 1, radiator assembly; 10, left radiator assembly; 11, right radiator assembly; 12, left radiator mounting seat; 13, right radiator mounting seat; 14, left radiator cooling liquid outlet; 15, right radiator cooling liquid inlet; 16, fin in the radiator core cooling liquid channel of the radiator assembly; 17, fin in the radiator core air channel of the radiator assembly;

[0037] 2, fan box body; 20, fan box body mounting seat; 21, left fan box body; 22, right fan box body; 23, left fan box body mounting seat; 24, right fan box body mounting seat;

[0038] 3, fan set; 30, motor; 31, motor mounting seat; 32, impeller assembly;

[0039] 4, load-bearing installation framework; 40, primary framework; 400, primary framework cross beam; 401, primary framework connecting beam; 41, secondary framework; 410, secondary framework cross beam; 411, secondary framework connecting beam; 42, shock-absorbing component; 420, rubber stack; 421, outer sleeve mounting plate; 4210, outer sleeve mounting plate fixed part; 4211, outer sleeve mounting plate connecting part; 422, inner sleeve; 4220, inner sleeve fixed part; 4221, inner sleeve connecting part; 423, inner sleeve pad plate; 43, bolt; 44, nut;

[0040] 5, cooling liquid pipeline. DETAILED DESCRIPTION

[0041] As Figures 1 to 4 shown in the figure is the locomotive or motor train cooling system disclosed in the application, which comprises a radiator assembly 1, a fan box body 2, a fan set 3, a load-bearing installation framework 4, a cooling liquid pipeline 5, and a pump;

[0042] The pump is connected with the radiator assembly 1 through the cooling liquid pipeline 5.

[0043] The load-bearing mounting frame 4 comprises a primary frame 40, a secondary frame 41 and a damping assembly 42;

[0044] The fan box 2 and the fan set 3 are rigidly connected with the primary frame 40 respectively;

[0045] The radiator assembly 1 is rigidly connected with the secondary frame 41;

[0046] The primary frame 40 and the secondary frame 41 are elastically connected through the damping assembly 42.

[0047] Specifically, as shown in the drawings, Figures 1 to 4 In the embodiment, the primary frame 40 comprises two oppositely arranged primary frame cross beams 400 and a plurality of primary frame connecting beams 401 connected between the two primary frame cross beams 400, the primary frame cross beam 400 is a channel steel structure with the opening facing outward; the secondary frame 41 comprises two oppositely arranged secondary frame cross beams 410 and a plurality of secondary frame connecting beams 411 connected between the two secondary frame cross beams 410, the secondary frame cross beam 410 is also a channel steel structure with the opening facing upward;

[0048] As shown in the drawings, Figure 5 The damping assembly 42 comprises a rubber stack 420, an outer sleeve mounting plate 421, an inner sleeve 422 and an inner sleeve gasket 423 to form a metal-rubber composite damping structure;

[0049] The outer sleeve mounting plate 421 is rigidly connected on the primary frame cross beam 400, and the inner sleeve 422 and the inner sleeve gasket 423 are rigidly connected on the secondary frame cross beam 410;

[0050] The outer sleeve mounting plate 421 is sleeved on the inner sleeve 422, and the outer sleeve mounting plate 421 and the inner sleeve 422 are elastically connected through the rubber stack 420.

[0051] In the embodiment, the outer sleeve mounting plate 421 comprises an outer sleeve mounting plate fixed part 4210 and an outer sleeve mounting plate connecting part 4211, the outer sleeve mounting plate fixed part 4210 is an annular sheet structure, which is rigidly connected with the primary frame cross beam 400 through two or more circumferentially distributed fasteners (screws are adopted in the embodiment), and the outer sleeve mounting plate connecting part 4211 is a sleeve structure and is connected with the inner ring of the outer sleeve mounting plate fixed part 4210, preferably, the outer sleeve mounting plate fixed part 4210 and the outer sleeve mounting plate connecting part 4211 are formed in an integral structure;

[0052] The inner sleeve 422 comprises an inner sleeve fixing portion 4220 in the form of a ring-shaped sheet structure and an inner sleeve connecting portion 4221 in the form of a sleeve structure, the inner sleeve connecting portion 4221 is connected to the inner ring of the inner sleeve fixing portion 4220, preferably, the inner sleeve connecting portion 4221 and the inner sleeve fixing portion 4220 are formed in an integrated structure, the inner sleeve connecting portion 4221 is rigidly connected to the secondary frame cross beam 410 through bolts and the like fasteners, specifically, the inner sleeve 422 is arranged below the secondary frame cross beam 410, the inner sleeve connecting portion 4221 of the inner sleeve 422 penetrates the bolt, the inner sleeve pad 423 is arranged on both sides of the groove bottom of the secondary frame cross beam 410, and the bolt is connected to the nut in the groove of the secondary frame cross beam 410, so that the inner sleeve 422 is rigidly fixed on the secondary frame 41.

[0053] The outer sleeve mounting plate connecting portion 4211 is sleeved outside the inner sleeve connecting portion 4221, and a rubber stack mounting space is formed between the two, and the rubber stack 420 is fixedly mounted in the rubber stack mounting space, and the outer sleeve mounting plate 421 and the inner sleeve 422 are elastically connected through the rubber stack 420.

[0054] The fan set 3 comprises an impeller assembly, a motor and a motor mounting seat, the motor 30 is rigidly connected to the primary frame cross beam 400 through the motor mounting seat 31, the fan box body 2 is rigidly connected to the primary frame cross beam 400 through the fan box body mounting seat 20, and the radiator assembly 1 is rigidly connected to the secondary frame cross beam through the radiator mounting seat; the fan set 3 and the radiator assembly 1 are arranged on both sides of the fan box body 2 respectively, the pump is connected to the radiator assembly through the cooling liquid pipeline to transport the cooling liquid into the radiator assembly, the motor 30 drives the impeller assembly 32 in the fan box body 2 to provide cooling air for the radiator assembly, and then heat exchange of the radiator assembly is realized.

[0055] The locomotive or motor train cooling system disclosed in the application has the advantages that the load-bearing mounting frame is arranged, the load-bearing mounting frame comprises a primary frame, a secondary frame and a damping assembly, the secondary mounting and damping structure of the locomotive or motor train cooling system is realized through the load-bearing mounting frame, so that the primary frame and the secondary frame are elastically connected through the rubber stack in the damping assembly, the transmission of the vibration of the fan is absorbed and inhibited, the structural noise of the cooling system is greatly reduced, and the comfort of passengers is improved. When the train runs and / or the fan operates, the fan and the fan box body vibrate synchronously, the possibility of scratching between the fan impeller and the fan box body caused by the asynchronous vibration of the fan and the fan box body is avoided, and the structural reliability is greatly improved. In addition, the fan box body does not bear the weight of the fan set, the stress of the thin-walled fan box body is greatly reduced, the risk of cracking of the fan box body is greatly reduced, and the operation reliability of the cooling system is improved. The cooling system has the characteristics of high reliability, compact structure, high specific heat dissipation and specific volume heat dissipation, and low power consumption.

[0056] Further, the motor 30 is a double-shaft motor rigidly connected to the first-level frame cross beam 400 through the motor mounting seat 31.

[0057] The heat sink assembly 1 and the fan box 2 each have two groups, in this embodiment, a left heat sink assembly 10, a left fan box 21, a right heat sink assembly 11 and a right fan box 22; the left heat sink assembly 10 and the right heat sink assembly 11 are rigidly connected to the second-level frame cross beam 410 through a left heat sink mounting seat 12 and a right heat sink mounting seat 13 respectively, and the left fan box 21 and the right fan box 22 are rigidly connected to the first-level frame cross beam 400 through a left fan box mounting seat 23 and a right fan box mounting seat 24 respectively.

[0058] The two groups of heat sink assemblies 1 and fan boxes 2 are symmetrically arranged at two ends of the double-shaft motor, and the two groups of heat sink assemblies are connected in series through the cooling liquid pipeline 5, in this embodiment, a left heat sink cooling liquid inlet is arranged on the front end liquid collecting cavity of the left heat sink assembly, a left heat sink cooling liquid outlet 14 is arranged on the rear end liquid collecting cavity of the left heat sink assembly, a right heat sink cooling liquid inlet 15 is arranged on the rear end liquid collecting cavity of the right heat sink assembly, and a right heat sink cooling liquid outlet is arranged on the front end liquid collecting cavity of the right heat sink assembly; the two ends of the cooling liquid pipeline 5 are communicated with the left heat sink cooling liquid outlet 14 and the right heat sink cooling liquid inlet 15 respectively, high-temperature cooling liquid flowing from the heat generating component enters the left heat sink core through the left heat sink cooling liquid inlet to perform first heat exchange, and then flows out of the left heat sink assembly through the left heat sink cooling liquid outlet 14; the cooling liquid after being cooled enters the right heat sink core through the connecting cooling liquid pipeline 5 between the left heat sink and the right heat sink to perform second heat exchange, and then flows back to the heat generating component from the right heat sink cooling liquid outlet 2; the double-shaft motor drives the impeller assembly 32 in the fan box at two ends to provide cooling air for the left heat sink assembly and the right heat sink assembly respectively, thereby realizing heat exchange of the heat sink. Compared with the parallel structure in which the high-temperature cooling liquid enters the left heat sink and the right heat sink in parallel and then flows out of the left heat sink and the right heat sink in parallel, the series structure of the left heat sink and the right heat sink simplifies the pipeline structure of the cooling system, is beneficial to weight reduction of the cooling system and improves the specific heat dissipation of the cooling system (unit weight heat dissipation).

[0059] Further, the cooling system of the present application adopts a double-shaft motor fan to provide cooling air for the two heat sink assemblies arranged on the left and right sides (i.e. the left heat sink assembly and the right heat sink assembly). In the same space, the left and right heat sink assemblies with double-side air inlet greatly improve the specific volume heat dissipation of the cooling system (unit volume heat dissipation) and improve the compactness of the structure of the cooling system compared with a single heat sink with the same total heat sink volume and single-side air inlet.

[0060] Furthermore, an elastic seal is provided between the radiator assembly 1 and the fan housing 2. In the present embodiment, the elastic seal is an elastic seal such as a rubber plate / rubber strip. In the present invention, since the radiator assembly of the cooling system is rigidly connected to the secondary frame of the shock-absorbing structure through the radiator mounting seat; the radiator assembly and the fan housing are elastically sealed by a rubber plate / rubber strip provided therebetween, so that there is no need to provide fasteners between the radiator assembly and the fan housing. In this way, the radiator assembly is isolated from the fan unit by the shock-absorbing assembly and the rubber plate / rubber strip, which greatly reduces the impact of the fan vibration on the radiator assembly and avoids failures such as cracks and leakages in the radiator core caused by the fan vibration.

[0061] Further, if Figure 6 and Figure 7 As shown, the fins 16 within the radiator core coolant channel of the radiator assembly are composite fins with oblique cuts based on large corrugations; the fins 17 within the radiator core air channel of the radiator assembly are variable-pitch corrugated fins. Specifically, the fins within the radiator core coolant channel utilize composite fins with oblique cuts based on large corrugations; the radiator core air channel utilizes a variable-pitch corrugated fin structure, with a smaller pitch at the cooling air inlet, gradually increasing pitch, and reaching a maximum pitch at the cooling air outlet; or the radiator core air channel utilizes a composite oblique cut structure with variable-pitch corrugated fins. This design fully utilizes the field synergy principle to improve heat transfer capacity, reducing cooling air loss while meeting heat dissipation requirements, and further reducing fan power consumption.

[0062] Furthermore, an air filter is provided at the air inlet end of the radiator assembly 1. By providing the air filter, the degree of dirtiness of the radiator can be reduced, the heat dissipation capacity of the cooling system can be ensured, and the probability of electrochemical corrosion of the radiator can be reduced, thereby improving the reliability of the radiator.

[0063] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A locomotive or railcar cooling system, characterized by: The cooling system comprises a radiator assembly, a fan box, a fan set, a load-bearing installation framework, a cooling liquid pipeline and a pump; The pump is connected with the radiator assembly through the cooling liquid pipeline; The load-bearing installation framework comprises a first framework, a second framework and a damping assembly; The fan box and the fan set are rigidly connected with the first framework respectively; The radiator assembly is rigidly connected with the second framework; The first framework is elastically connected with the second framework through the damping assembly; The fan set comprises an impeller assembly, a motor and a motor mounting seat, the motor is a double-shaft motor, the double-shaft motor is rigidly connected on the first framework through the motor mounting seat, and the double-shaft motor is connected with the impeller assembly at both ends; The radiator assembly and the fan box are both provided with two groups, the two groups of the radiator assembly and the fan box are symmetrically arranged at both ends of the double-shaft motor, the fan box is rigidly connected on the first framework through a fan box mounting seat, the radiator assembly is arranged at one end of the fan box opposite to the double-shaft motor, and the radiator assembly is rigidly connected on the second framework through a radiator mounting seat.

2. A locomotive or railcar cooling system as claimed in claim 1, characterized in that: The damping assembly comprises a rubber stack, an outer sleeve mounting plate, an inner sleeve and an inner sleeve pad plate; The outer sleeve mounting plate is rigidly connected on the first framework, and the inner sleeve and the inner sleeve pad plate are rigidly connected on the second framework; The outer sleeve mounting plate is sleeved on the inner sleeve, and the outer sleeve mounting plate and the inner sleeve are elastically connected through the rubber stack.

3. The cooling system of the locomotive or motor train set according to claim 2, characterized in that: The outer sleeve mounting plate comprises an outer sleeve mounting plate fixed part and an outer sleeve mounting plate connecting part, the outer sleeve mounting plate fixed part is rigidly connected with the first framework, and the outer sleeve mounting plate connecting part is a sleeve structure; The inner sleeve comprises an inner sleeve fixed part and an inner sleeve connecting part, the inner sleeve connecting part is a sleeve structure, and the inner sleeve connecting part is rigidly connected with the second framework; The outer sleeve mounting plate connecting part is sleeved outside the inner sleeve connecting part, a rubber stack installation space is formed between the outer sleeve mounting plate connecting part and the inner sleeve connecting part, and the rubber stack is fixedly installed in the rubber stack installation space.

4. The cooling system of the locomotive or motor train set according to claim 1, characterized in that: The two groups of the radiator assembly are communicated through the cooling liquid pipeline.

5. A locomotive or railcar cooling system as claimed in claim 1 or 4, characterised in that: The fins in the cooling liquid passage of the radiator core body of the radiator assembly are oblique cut composite fins based on large corrugations; The fins in the air passage of the radiator core body of the radiator assembly are variable-pitch corrugated fins.

6. A locomotive or railcar cooling system as claimed in claim 5, characterised in that: An elastic sealing piece is further arranged between the radiator assembly and the fan box.

7. A locomotive or railcar cooling system as claimed in claim 6, characterised in that: The elastic sealing piece is a rubber plate / rubber strip.

8. The locomotive or railcar cooling system of claim 1, wherein: An air filter is further arranged at the air inlet end of the radiator assembly.

Images