Cooling tower for locomotive

Abstract

The utility model relates to the technical field of rail transit, in particular to a cooling tower for a locomotive, which comprises a radiator, a tower body and an air supply mechanism, the radiator body is arranged at the top of a locomotive box body, the tower body comprises a first tower section and a second tower section which are hollow and are sequentially arranged into an L shape, and the free end of the first tower section is positioned below the radiator body; and the free end of the second tower section is arranged on the side wall of the locomotive box body. The radiator and the air supply mechanism are combined, cooling of equipment to be cooled can be more efficiently achieved, the air outlet and the air inlet can be formed in the top and the side wall of the locomotive carriage respectively, an L-shaped structure is formed, and the occupied space is greatly reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of rail transportation, in particular to a cooling tower for a locomotive. Background Art

[0002] The cooling tower is a device installed in the locomotive to remove the heat generated by the main converter and transformer during operation. It is generally an oil-water composite type. The main converter and transformer generate a lot of heat during operation. The oil and coolant carrying the heat are transported to the heat exchanger under the cooling tower through pipelines. The fan installed in the cooling tower provides cold air to transfer the heat of the oil and coolant to the air. The cooled oil and coolant return to the transformer and converter, thereby ensuring the normal and stable operation of the converter and transformer.

[0003] In the traditional oil-water composite cooling tower design, the fan is arranged inside the tower body, an air inlet is arranged above the fan, the air inlet is arranged at the top of the locomotive, a radiator and an air outlet are arranged below the fan, the air outlet is arranged at the bottom of the locomotive, and the radiator arranged in the middle includes an upper water-cooled radiator and a lower oil-cooled radiator, the water-cooled radiator is provided with a water-cooled liquid inlet and a water-cooled liquid outlet, and the oil-cooled radiator is provided with an oil-cooled liquid inlet and an oil-cooled liquid outlet. The traditional oil-water composite cooling tower has the following defects: ① Since the air outlet is arranged at the bottom of the locomotive and the air inlet is arranged at the top of the locomotive, such an upper and lower through-type integrated layout will occupy a large space inside the locomotive; ② The water-cooled radiator and the oil-cooled radiator are placed in sequence up and down, and the fan is easy to transfer the heat of the water-cooled radiator to the oil-cooled radiator below while dissipating heat to the water-cooled radiator, resulting in insufficient heat dissipation effect of the oil-cooled radiator.

[0004] In summary, there is an urgent need for a cooling tower with a compact structure, small footprint and good cooling and heat dissipation effects to solve the problems existing in the prior art. Utility Model Content

[0005] The utility model aims to provide a locomotive cooling tower with a compact structure, small space occupation and good cooling and heat dissipation effect. The specific technical scheme is as follows:

[0006] A cooling tower for a locomotive, installed on the top and side walls of a locomotive box, comprises a radiator, a tower body and an air supply mechanism;

[0007] The radiator comprises one or two groups of radiating monomers arranged in parallel, wherein the radiating monomers comprise a radiating body and a medium inlet and a medium outlet arranged on the radiating body; the radiating body is arranged at a first mounting hole position opened on the top of the locomotive body, and is used to cool the equipment to be cooled in the locomotive; the tower body comprises a first tower section and a second tower section which are hollow and sequentially arranged in an L shape, wherein the free end of the first tower section is arranged corresponding to the first mounting hole and is located below the radiating body; the free end of the second tower section is arranged at a second mounting hole position opened on the side wall of the locomotive body;

[0008] The air supply mechanism includes a fan and a power source. The fan is disposed in the first tower section and / or the second tower section and is connected to the power source.

[0009] Preferably, the radiator includes a group of heat dissipation units for water cooling and a group of heat dissipation units for oil cooling on the same horizontal plane.

[0010] Preferably, the heat dissipation units are detachably disposed on the outer wall of the top of the locomotive box body; the free end of the first tower section is detachably disposed on the inner wall of the top of the locomotive box body; the free end of the second tower section is detachably disposed on the inner side wall of the locomotive box body.

[0011] Preferably, between the heat dissipation units and the outer wall of the top of the locomotive box body, between the free end of the first tower section and the inner wall of the top of the locomotive box body, and between the free end of the second tower section and the inner side wall of the locomotive box body, detachable connections are all made through screws or bolt-nut assemblies.

[0012] Preferably, a plurality of strip-shaped heat dissipation fins are spaced above the heat dissipation body, and the gap direction between adjacent heat dissipation fins is consistent with the advancing direction of the locomotive; a plurality of heat dissipation holes are provided at the part of the heat dissipation body between two heat dissipation fins.

[0013] Preferably, a filter screen corresponding to the free end of the second tower section is provided at the second mounting hole.

[0014] Preferably, the central axis of the first tower section forms an angle of 90° - 145° with the central axis of the second tower section.

[0015] Preferably, temperature sensors are provided at both the medium inlet and the medium outlet.

[0016] Preferably, a controller is further included, and the power source and the temperature sensor are both connected to the controller.

[0017] Applying the technical solution of the present utility model has the following beneficial effects:

[0018] (1) The locomotive cooling tower disclosed by the present utility model includes a radiator, a tower body and an air supply mechanism. The heat dissipation body is disposed on the top of the locomotive box body. The tower body includes a first tower section and a second tower section that are hollow and sequentially arranged in an L shape. The free end of the first tower section is located below the heat dissipation body; the free end of the second tower section is disposed on the side wall of the locomotive box body. The combination of the radiator and the air supply mechanism can more efficiently achieve the cooling of the equipment to be cooled, and the air outlet and the air inlet can be respectively disposed on the top and the side wall of the locomotive carriage to form an L-shaped structure, greatly reducing the occupied space.

[0019] (2) In this utility model, the radiator includes a group of heat dissipation units for water cooling and a group of heat dissipation units for oil cooling located on the same horizontal plane, which solves the problem that the heat dissipation effect of the oil cooler is insufficient due to the sequential arrangement of the water cooler and the oil cooler in the traditional electric locomotive cooling tower, and ensures the cooling effects of oil cooling and water cooling.

[0020] (3) In this utility model, a plurality of strip-shaped heat dissipation fins are spaced above the heat dissipation body, and the gap direction between adjacent heat dissipation fins is consistent with the advancing direction of the locomotive; a plurality of heat dissipation holes are provided at the part of the heat dissipation body between two heat dissipation fins. The design of the radiator combined with the heat dissipation fins can meet the cooling of the locomotive moving at high speed through the running wind, without starting the fan, reducing noise and improving the comfort of the locomotive; a plurality of heat dissipation holes are provided at the lower end of the gap between two adjacent heat dissipation fins on the heat dissipation body, facilitating the wind from the fan to blow out through the heat dissipation holes for heat dissipation.

[0021] (4) In this utility model, a filter screen corresponding to the free end of the second tower section is provided at the second mounting hole to remove impurities in the air flow drawn in during the operation of the fan, and extend the service life of equipment such as the fan.

[0022] (5) In this utility model, temperature sensors are provided at both the medium inlet and the medium outlet, and it also includes a controller. The power source and the temperature sensors are both connected to the controller. Through the combination of the temperature sensors and the controller, the fan speed can be started or adjusted in real time according to the cooling requirements to optimize the cooling effect.

[0023] In addition to the purposes, features and advantages described above, this utility model has other purposes, features and advantages. The following will refer to the drawings to make a further detailed description of this utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The drawings forming a part of this application are used to provide a further understanding of this utility model. The schematic embodiments of this utility model and their descriptions are used to explain this utility model and do not constitute an improper limitation to this utility model. In the drawings:

[0025] Figure 1 is the overall structural schematic diagram of the cooling tower for locomotives in the preferred embodiment of this utility model;

[0026] Figure 2 is Figure 1 the assembly structural schematic diagram of the radiator and the heat dissipation fins in

[0027] Figure 3 is Figure 1 the schematic diagram of the radiator being cooled by the running wind when the fan is in the unstarted state in (the black arrow represents the air flow direction);

[0028] Figure 4This is a schematic diagram of the fan cooling the radiator through the fan when the fan is started (the black arrow represents the direction of air flow);

[0029] Figure 5 yes Figure 3 Schematic diagram of the explosion structure of the cooling tower and locomotive box for the middle locomotive;

[0030] Among them, 1. radiator, 1.1. heat dissipation body, 1.2. medium inlet, 1.3. medium outlet, 1.4. screw; 2. tower body, 2.1. first tower section, 2.1.1. free end of the first tower section, 2.2. second tower section, 2.2.1. free end of the second tower section; 3. air supply mechanism, 3.1. fan; 4. heat sink; 5. filter; 6. temperature sensor; 7. controller; 8. locomotive body, 8.1. top of the locomotive body, 8.2. side wall of the locomotive body, 8.3. first mounting hole, 8.4. second mounting hole. DETAILED DESCRIPTION

[0031] The embodiments of the present invention are described in detail below with reference to the accompanying drawings. However, the present invention can be implemented in many different ways as defined and covered by the claims.

[0032] Example:

[0033] A cooling tower for locomotive, referring to Figures 1 - 5 The locomotive cooling tower is installed on the top 8.1 and the side wall 8.2 of the locomotive box 8. The top 8.1 of the locomotive box is provided with a first mounting hole 8.3, and the side wall 8.2 of the locomotive box is provided with a second mounting hole 8.4. The locomotive cooling tower specifically includes a radiator 1, a tower body 2 and an air supply mechanism 3, and the details are as follows:

[0034] The radiator 1 includes one or two groups of heat dissipation units arranged in parallel, and the heat dissipation unit includes a heat dissipation body 1.1 and a medium inlet 1.2 and a medium outlet 1.3 arranged on the heat dissipation body 1.1; the heat dissipation body 1.1 is arranged at the first mounting hole 8.3 opened on the top of the locomotive body, and the cooling medium passes through the equipment to be cooled (such as the main converter, transformer, etc.) and enters the heat dissipation unit through the medium inlet 1.2, and after cooling, it flows out from the medium outlet 1.3 and circulates to the equipment to be cooled, thereby completing the cooling of the equipment to be cooled in the locomotive. The heat dissipation unit is detachably arranged on the top outer wall of the locomotive body. This embodiment is preferred, Figure 1 , Figure 3 , Figure 4 and Figure 5 Two groups are shown in the figure, specifically including a group of heat dissipation units for water cooling and a group of heat dissipation units for oil cooling located on the same horizontal plane. The heat dissipation units are detachably arranged on the top outer wall of the locomotive box body by screws 1.4, which is convenient for installation and removal.

[0035] The tower body 2 includes a first tower section 2.1 and a second tower section 2.2 that are hollow and arranged in an L shape in sequence. The free end 2.1.1 of the first tower section 2.1 is correspondingly arranged with the first mounting hole 8.3 and is located directly below the heat dissipation body 1.1; the free end 2.2.1 of the second tower section 2.2 is arranged at the position of the second mounting hole 8.4 opened on the side wall of the locomotive body. Preferably in this embodiment, the free end of the first tower section 2.1 is detachably arranged on the inner wall of the top of the locomotive body (preferably connected by a combination of bolts and nuts); the free end of the second tower section 2.2 is detachably arranged on the inner side wall of the locomotive body (preferably connected by a combination of bolts and nuts). The central axis of the first tower section 2.1 forms an angle of 90° - 145° with the central axis of the second tower section 2.2, preferably 90°.

[0036] The air supply mechanism 3 includes a fan 3.1 and a power source. The fan is a variable-frequency fan, and the fan 3.1 is arranged in the first tower section 2.1 or the second tower section 2.2 and is connected to the power source. The fan 3.1 is used to cool the cooling medium flowing through the heat dissipation body. Preferably in this embodiment, the fan is arranged in the first tower section. The power source adopts a conventional power source such as an electric motor, and the power source can be directly purchased.

[0037] Preferably in this embodiment, a plurality of strip-shaped heat dissipation fins 4 are arranged at intervals above the heat dissipation body. Refer to Figures 1 - 5 , the gap direction between adjacent heat dissipation fins is the same as the advancing direction of the locomotive; a plurality of heat dissipation holes (not shown) are arranged at the part of the heat dissipation body between two heat dissipation fins. A filter screen 5 corresponding to the free end of the second tower section is arranged at the second mounting hole to remove impurities in the air flow drawn in during the operation of the fan and extend the service life of equipment such as the fan.

[0038] Temperature sensors 6 are arranged at both the medium inlet 1.2 and the medium outlet 1.3.

[0039] Preferably in this embodiment, a controller 7 is further included, and the power source and the temperature sensor 6 are both connected to the controller.

[0040] Applying the locomotive cooling tower of this embodiment, the specific effects are as follows:

[0041] ①. In this embodiment, the water-cooled and oil-cooled heat dissipation monomers are placed side by side, solving the problem that in the cooling tower of traditional electric locomotives, the water cooler and the oil cooler are placed one above the other in sequence, resulting in insufficient heat dissipation effect of the oil cooler.

[0042] ②. Multiple heat dissipation units in the radiator are fixedly connected to the top of the locomotive carriage through a number of bolts, which is convenient for later detachable maintenance and greatly improves the efficiency. The tower body includes a first tower section and a second tower section that are hollow and connected in sequence. The air outlet is arranged at the top of the locomotive carriage and the air inlet is closely attached to the side wall of the locomotive carriage. The tower body is in an L-shaped structure, which greatly reduces the occupied space.

[0043] ③. A strip-shaped heat sink is arranged above the radiator, and the direction of the heat sink gap is consistent with the advancing direction of the locomotive, which greatly increases the heat dissipation area.

[0044] ④. Temperature sensors are provided at both the medium inlet and the medium outlet of the water-cooled and oil-cooled heat dissipation units to detect the temperature of the cooling medium in the heat dissipation unit in real time through the temperature sensors. In addition, a controller is also provided. The cooling tower can automatically adjust the power source of the fan through the controller in combination with the data monitored by the temperature sensors, change the starting and rotating frequencies of the fan, so that the radiator always maintains a constant heat dissipation condition, saving energy, reducing consumption, being intelligent and efficient, and operating reliably.

[0045] ⑤. The locomotive cooling tower of this embodiment adopts the combination of heat sinks, radiators and controllers. When the locomotive runs at a relatively high speed, the effect of wind cooling during driving is better and can meet the heat dissipation requirements, so there is no need to start the fan (such as Figure 3 , directly rely on the wind during driving for heat dissipation), achieving the effects of green low-carbon, energy conservation and emission reduction; when the locomotive runs at a relatively low speed or the heat dissipation is insufficient, start the fan, and the fan and the wind during driving are used to dissipate heat from the radiator at the same time, and the fan frequency is adjusted according to the heat dissipation requirements to achieve the purpose of simultaneous heat dissipation by the fan and the wind during driving, thus changing the disadvantage that the traditional locomotive cooling tower only dissipates heat through a high-power fan. At this time, the required fan power is greatly reduced, from the flow rate of 12 m 3 / s required by the traditional fan to 5 m 3 / s. The power consumption becomes smaller, and the noise and vibration generated by the fan are also greatly reduced, reducing the energy consumption required for locomotive operation and reducing the noise and vibration of the cooling tower. In addition, when the locomotive stops or there is no wind, the fan can be started to dissipate heat from the radiator only through the fan, as shown in Figure 4 .

[0046] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A cooling tower for a locomotive, installed on the top and side walls of a locomotive box, characterized in that: The invention comprises a radiator (1), a tower body (2) and an air supply mechanism (3); the radiator (1) comprises one or two sets of heat dissipation monomers arranged in parallel, the heat dissipation monomers comprising a heat dissipation body (1.1) and a medium inlet (1.2) and a medium outlet (1.3) arranged on the heat dissipation body (1.1); the heat dissipation body (1.1) is arranged at a first mounting hole position opened on the top of a locomotive box body, and is used to cool the equipment to be cooled in the locomotive; the tower body (2) comprises a hollow and sequentially arranged A first tower section (2.1) and a second tower section (2.2) are formed in an L shape, wherein the free end of the first tower section (2.1) is arranged corresponding to the first mounting hole and is located below the heat dissipation body (1.1); the free end of the second tower section (2.2) is arranged at the position of the second mounting hole opened on the side wall of the locomotive box; the air supply mechanism (3) comprises a fan (3.1) and a power source, wherein the fan (3.1) is arranged in the first tower section (2.1) and / or the second tower section (2.2) and is connected to the power source.

2. The locomotive cooling tower according to claim 1, characterized in that: The radiator (1) comprises a group of heat dissipation units for water cooling and a group of heat dissipation units for oil cooling, which are located on the same horizontal plane.

3. The locomotive cooling tower according to claim 1, characterized in that: The heat dissipation unit is detachably arranged on the top outer wall of the locomotive box; the free end of the first tower section (2.1) is detachably arranged on the top inner wall of the locomotive box; and the free end of the second tower section (2.2) is detachably arranged on the inner side wall of the locomotive box.

4. The locomotive cooling tower according to claim 3, characterized in that: The heat dissipation unit and the top outer wall of the locomotive box, the free end of the first tower section (2.1) and the top inner wall of the locomotive box, and the free end of the second tower section (2.2) and the inner side wall of the locomotive box are all detachably connected by means of screws or bolt-nut assemblies.

5. The locomotive cooling tower according to any one of claims 1 to 4, characterized in that: A plurality of strip-shaped heat sinks (4) are arranged at intervals above the heat sink body, and the gap direction between adjacent heat sinks is consistent with the forward direction of the locomotive; a plurality of heat sink holes are arranged at a position between two heat sinks on the heat sink body.

6. The locomotive cooling tower according to any one of claims 1 to 4, characterized in that: A filter screen (5) is provided at the second mounting hole and is arranged corresponding to the free end of the second tower section (2.2).

7. The locomotive cooling tower according to any one of claims 1 to 4, characterized in that: The central axis of the first tower section (2.1) and the central axis of the second tower section (2.2) form an angle of 90°-145°.

8. The locomotive cooling tower according to any one of claims 1 to 4, characterized in that: Temperature sensors (6) are provided at both the medium inlet (1.2) and the medium outlet (1.3).

9. The locomotive cooling tower according to claim 8, characterized in that: The device also comprises a controller (7), and the power source and the temperature sensor (6) are both connected to the controller (7).

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