CN216044552U - Motor train unit cooling tower adopting double main air coolers - Google Patents
Motor train unit cooling tower adopting double main air coolers Download PDFInfo
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- CN216044552U CN216044552U CN202122596541.3U CN202122596541U CN216044552U CN 216044552 U CN216044552 U CN 216044552U CN 202122596541 U CN202122596541 U CN 202122596541U CN 216044552 U CN216044552 U CN 216044552U
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Abstract
The utility model discloses a motor train unit cooling tower adopting double main air coolers, belongs to the technical field of fluid machinery, and solves the problem that once one main air cooler fails to operate, the cooling tower cannot work due to the fact that one main air cooler is configured on one cooling tower in the existing design scheme. The air inlet cylinder, the air outlet cylinder and the cone cylinder are sequentially connected through bolts to form an airflow inlet and outlet channel, and the main air cooler is fixed on a fan mounting seat in the cooling tower through a mounting flange of the air outlet cylinder. Two main air coolers are arranged in a cooling tower side by side, when the cooling tower runs, the two main air coolers simultaneously provide cooling air for the cooling tower, when one fan breaks down, the other fan is not interfered to continue running, at the moment, the cooling heat dissipation power is halved, and the locomotive can still continue running.
Description
Technical Field
The utility model belongs to the technical field of fluid machinery, and particularly relates to a motor train unit cooling tower adopting double main air coolers.
Background
When the cooling tower of the motor train unit works, heat from the transformer and the converter is absorbed, the cooling tower is forcibly cooled and ventilated by the main air cooler, cooling air reaches the radiator of the cooling tower from the air outlet of the ventilator through the air supply pipeline, a large amount of heat of the radiator of the cooling tower is blown to the atmosphere, and the purpose of cooling the transformer is further achieved. The flow required for this type of fan is 12.5m3/s, the static pressure is 1400Pa, and the acoustic power is less than 112dB (A).
The cooling tower of the motor train unit is provided with a main air cooler, once the main air cooler breaks down and cannot operate, the cooling tower cannot work, the temperature rise of a transformer converter is too high, the whole machine is broken down, and the motor train unit cooling tower needs to develop a new fan to improve the reliability of the working performance and solve the problems.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a motor train unit cooling tower adopting double main air coolers, which is used for solving the following technical problems:
the current design scheme is that a cooling tower is provided with a main air cooler, and once the main air cooler breaks down and cannot operate, the problem that the cooling tower cannot work is caused.
In order to achieve the purpose, the utility model provides the following technical scheme:
the utility model provides an adopt EMUs cooling tower of two main air-coolers, includes two main air-coolers of arranging side by side, main air-cooler includes air inlet cylinder, play dryer, impeller, motor, bracing piece and awl section of thick bamboo, air inlet cylinder, play dryer and awl section of thick bamboo pass through the bolt and link to each other in proper order, form the air current access way, the motor is fixed to be set up in the play dryer, the impeller fastens in the axle extension end of motor, install the buckler on the impeller, four piece at least bracing pieces have evenly been arranged to the afterbody circumference of motor, and the both ends of every bracing piece are respectively with bolted connection motor and play dryer, main air-cooler is fixed on the fan mount pad in the cooling tower through the mounting flange of play dryer.
Further scheme: go out the chimney and include circular flange, urceolus, mounting flange and motor mounting panel, the coaxial inner tube that is equipped with in the urceolus, the circumference equipartition has 10-18 arc stator between urceolus and the inner tube, the one end and the coaxial fixed connection of circular flange of urceolus, the other end and the coaxial fixed connection of mounting flange, the even cloth of outer wall circumference of urceolus has a plurality of strengthening ribs, the urceolus is close to on the mounting flange's the inner wall circumference even cloth have a plurality of supporting seats, motor mounting panel fixed connection is in the inner tube.
Further scheme: the motor is fastened on a motor mounting plate inside the air outlet cylinder through a plurality of bolts.
Further scheme: the motor mounting plate is of a circular ring-shaped structure.
Further scheme: the divergence angle of the conical cylinder is 14-20 degrees.
Further scheme: the air inlet cylinder is in a horn mouth shape.
Further scheme: the impeller is of a meridian acceleration type axial flow type.
Further scheme: the hub ratio of the impeller is 0.48-0.65, the hub ratio of the blade stacking center line of the impeller is 0.56, and the blades are in a wing shape.
Further scheme: the number of the blades of the impeller is 8-12.
Further scheme: the radial clearance between the impeller and the air outlet cylinder is 1-3 mm.
Compared with the prior art, the utility model has the beneficial effects that:
1. two main air coolers are arranged in a cooling tower side by side, when the cooling tower runs, the two main air coolers simultaneously provide cooling air for the cooling tower, when one fan breaks down, the other fan is not interfered to continue running, at the moment, the cooling heat dissipation power is halved, and the locomotive can still continue running.
2. The impeller of the main air cooler is a meridian acceleration type axial flow impeller, the hub ratio is 0.48-0.65, the hub ratio at the central line of the blade set is 0.56, the blades are of a typical wing type blade profile, and the number of the blades is 10, so that the axial flow impeller has the advantages of high pressure and low noise.
3. The air inlet barrel is in a horn mouth shape, and plays roles of collecting and rectifying air inflow, so that inlet air flow smoothly enters the impeller, no vortex exists at the inlet of the fan, and noise of the air inlet is optimized.
4. The device has the characteristics of simple and compact structure, convenience in installation, light weight, small vibration, low noise and high efficiency.
Drawings
In order to facilitate understanding for those skilled in the art, the present invention will be further described with reference to the accompanying drawings.
Fig. 1 is a schematic structural view of a main air cooler according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of an air duct provided in an embodiment of the present invention.
In the figure: 1. an air inlet cylinder; 2. a waterproof cover; 3. an impeller; 4. an air outlet cylinder; 5. a motor; 6. a support bar; 7. a conical cylinder; 41. a circular flange; 42. an outer cylinder; 43. reinforcing ribs; 44. installing a flange; 45. a guide vane; 46. a supporting seat; 47. an inner barrel; 48. motor mounting panel.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the detailed description and specific examples, while indicating the preferred embodiment of the utility model, are intended for purposes of illustration only and are not intended to limit the scope of the utility model. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-2, in an embodiment of the utility model, a motor train unit cooling tower using double main air coolers includes an air inlet cylinder 1, a waterproof cover 2, an impeller 3, an air outlet cylinder 4, a motor 5, a support rod 6 and a cone cylinder 7.
The main air cooler is fixed on a fan mounting seat in the cooling tower through a mounting flange 44 on the air outlet cylinder 4. The air inlet cylinder 1, the air outlet cylinder 4 and the cone cylinder 7 are sequentially connected through bolts to form a fan airflow inlet and outlet channel. The motor 5 as a driving part of the main cooling fan is fastened on a motor mounting plate 48 inside the air outlet barrel 4 through four bolts. The impeller 3 is fastened at the shaft extension end of the motor 5 and locked by a stop washer and a round nut, and the impeller 3 is provided with a waterproof cover 2. The radial clearance between the impeller 3 and the air outlet cylinder 4 is kept between 1 mm and 3mm, which is the guarantee of high efficiency of the fan. 4 spinal branch vaulting poles 6 are designed to the afterbody of motor 5, and bolted connection motor 5 and play dryer 4 are used respectively at the both ends of bracing piece 6, prevent motor 5 radial swing, and this structure makes fan rigidity promote greatly, and motor 5's vibration speed drops to minimum (2.2 mm/s).
When the fan works, a large amount of cold air at the top of the motor train unit is filtered through the filter screen, flows and is rectified through the air inlet cylinder 1 and then is sent into the impeller 3 rotating at a high speed, the air is fully pressurized and then rapidly flows into the air outlet cylinder 4, the air is rectified again through the guide vane 45 and flows into the conical cylinder 7, the expansion angle of the conical cylinder 7 is 14-20 degrees, most of dynamic pressure of the fan is converted into static pressure at the moment, the air flow is finally blown to a radiator after being expanded again, heat of the air flow is rapidly taken away, and the purpose of forcedly cooling the transformer and the converter is achieved.
The air inlet cylinder 1 is in a horn mouth shape, plays the roles of collecting and rectifying the inlet air flow, so that the inlet air flow smoothly enters the impeller 3, no vortex exists at the fan inlet, and the noise of the air inlet is optimized. The air inlet cylinder 1 is made of 3-series aluminum alloy with excellent extensibility, the geometric structure size is guaranteed, and the weight of the air inlet cylinder 1 is only 5 Kg.
The air outlet cylinder 4 consists of a circular flange 41, an outer cylinder 42, a reinforcing rib 43, a mounting flange 44, a guide vane 45, a supporting seat 46, an inner cylinder 47 and a motor mounting plate 48. 13 arc guide vanes 45 are uniformly distributed in the air outlet cylinder 4, high-speed air flow from the impeller 3 is rectified, most of radial flowing speed is converted into axial speed, and static pressure of the fan is greatly improved. The motor mounting plate 48 inside the air-out drum 4 plays a role of fixing the motor 5, and the mounting flange 44 outside the air-out drum 4 plays a role of fixing the whole fan. In order to ensure that the fan has the characteristic of light weight, all parts of the air outlet cylinder 4 adopt 5 series or 6 series aluminum alloy plates with small density and high strength according to the bearing capacity.
The impeller 3 is a meridian acceleration type axial flow impeller, the hub ratio is between 0.48 and 0.65, and the hub ratio at the central line of the blade stacking is 0.56; the blades are of a typical airfoil type and are 10 in number, and the design is such that the axial flow impeller has the advantages of high pressure and low noise. The impeller 3 is formed by vacuum bag pressing technology by adopting non-metal carbon fiber materials, so that the weight of the impeller is reduced 1/3 compared with that of the original impeller. A waterproof cover 2 is installed above the impeller 3 through bolts, and the motor 5 below the waterproof cover is prevented from being infiltrated by rainwater to cause faults.
The motor 5 is a 15kW three-phase asynchronous motor, an oil adding type bearing is adopted, the service life of the bearing is prolonged, and the base and the end cover of the motor 5 are both made of cast aluminum alloy, so that the motor 5 has the characteristic of light weight. The tail of the motor 5 is provided with 4 support rods 6 which are fastened on the air outlet cylinder 4 through bolts, so that the structural rigidity of the fan is enhanced, and the vibration is smaller.
The working principle is as follows:
two main air coolers are arranged in a cooling tower side by side, when the cooling tower runs, the two main air coolers simultaneously provide cooling air for the cooling tower, when one fan breaks down, the other fan is not interfered to continue running, at the moment, the cooling heat dissipation power is halved, and the locomotive can still continue running.
The main air cooler is fixed on a fan mounting seat in the cooling tower through a mounting flange 44 of the air outlet barrel 4. When the fan works, a large amount of cold air at the top of the motor train unit is firstly filtered through the filter screen, then flows into the high-speed rotating impeller 3 after being subjected to flow collection and rectification through the air inlet cylinder 1, the air is fully pressurized and then rapidly flows into the air outlet cylinder 4, and is rectified again through the guide vane 45, the air outlet of the fan is provided with the conical cylinder 7, the air is finally blown to the radiator after being expanded again, the heat of the air is rapidly taken away, and the purpose of forcedly cooling the transformer and the converter is achieved.
The foregoing is merely exemplary and illustrative of the present invention, and various modifications, additions and substitutions of the specific embodiments described herein may be made by those skilled in the art without departing from the scope of the utility model as defined in the accompanying claims.
Claims (10)
1. The utility model provides an adopt EMUs cooling tower of two main air-coolers, its characterized in that includes:
two main air-coolers arranged side by side, main air-cooler includes air inlet cylinder (1), play dryer (4), impeller (3), motor (5), bracing piece (6) and awl section of thick bamboo (7), air inlet cylinder (1), play dryer (4) and awl section of thick bamboo (7) link to each other in proper order through the bolt, form the air current access way, motor (5) are fixed to be set up in play dryer (4), impeller (3) fasten in the axle extension end of motor (5), install buckler (2) on impeller (3), four piece at least bracing pieces (6) have evenly been arranged to the afterbody circumference of motor (5), and the both ends of every bracing piece (6) are respectively with bolted connection motor (5) and play dryer (4), and main air-cooler is fixed on the fan mount pad in the cooling tower through mounting flange (44) that goes out dryer (4).
2. The cooling tower for the motor train unit with the double main air coolers according to claim 1, wherein the air outlet cylinder (4) comprises a circular flange (41), an outer cylinder (42), a mounting flange (44) and a motor mounting plate (48), an inner cylinder (47) is coaxially arranged in the outer cylinder (42), 10-18 arc guide vanes (45) are uniformly distributed in the circumferential direction between the outer cylinder (42) and the inner cylinder (47), one end of the outer cylinder (42) is coaxially and fixedly connected with the circular flange (41), the other end of the outer cylinder is coaxially and fixedly connected with the mounting flange (44), a plurality of reinforcing ribs (43) are uniformly distributed in the circumferential direction on the outer wall surface of the outer cylinder (42), a plurality of supporting seats (46) are uniformly distributed in the circumferential direction on the inner wall of the outer cylinder (42) close to the mounting flange (44), and the motor mounting plate (48) is fixedly connected in the inner cylinder (47).
3. The motor train unit cooling tower adopting double main air coolers as claimed in claim 2, wherein the motor (5) is fastened on a motor mounting plate (48) inside the air outlet barrel (4) through a plurality of bolts.
4. The motor train unit cooling tower adopting double main air coolers according to claim 3, wherein the motor mounting plate (48) is of a circular ring-shaped structure.
5. The motor train unit cooling tower adopting double main air coolers according to claim 1, wherein the divergence angle of the conical drums (7) is 14-20 degrees.
6. The cooling tower for the motor train unit adopting double main air coolers as claimed in claim 1, wherein the air inlet cylinder (1) is in a bell mouth shape.
7. The cooling tower for motor train units using double primary air coolers according to claim 1, wherein the impellers (3) are of the meridional acceleration type axial flow type.
8. The cooling tower for motor train units using double primary air coolers according to claim 7, wherein the impeller (3) has a hub ratio of 0.48-0.65, the impeller (3) has a hub ratio of 0.56 at the blade stacking center line, and the blades are airfoil-shaped.
9. The cooling tower for motor train units using double primary air coolers according to claim 8, wherein the number of the blades of the impeller (3) is 8-12.
10. The cooling tower for the motor train unit adopting double main air coolers according to claim 1, wherein the radial clearance between the impeller (3) and the air outlet barrel (4) is 1-3 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122596541.3U CN216044552U (en) | 2021-10-27 | 2021-10-27 | Motor train unit cooling tower adopting double main air coolers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122596541.3U CN216044552U (en) | 2021-10-27 | 2021-10-27 | Motor train unit cooling tower adopting double main air coolers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216044552U true CN216044552U (en) | 2022-03-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122596541.3U Active CN216044552U (en) | 2021-10-27 | 2021-10-27 | Motor train unit cooling tower adopting double main air coolers |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216044552U (en) |
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2021
- 2021-10-27 CN CN202122596541.3U patent/CN216044552U/en active Active
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