CN211139327U - Subway vehicle air exhaust hood device - Google Patents
Subway vehicle air exhaust hood device Download PDFInfo
- Publication number
- CN211139327U CN211139327U CN201921268312.5U CN201921268312U CN211139327U CN 211139327 U CN211139327 U CN 211139327U CN 201921268312 U CN201921268312 U CN 201921268312U CN 211139327 U CN211139327 U CN 211139327U
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- cover plate
- upper cover
- baffle
- exhaust hood
- hood device
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Abstract
The utility model discloses a hood device for railcar is aired exhaust, including hood body and baffle, the hood body includes upper cover plate, lower apron and straight tube section, and lower cover connection is in the lower port department of upper cover plate, and straight tube section upper end is connected under on the apron and communicates with each other with the inner chamber of upper cover plate, is provided with the baffle on the inside top surface of upper cover plate, and the baffle is big-end-up's solid of revolution, and the axis of the solid of revolution is the vertical center line of upper cover plate, and the generating line of the solid of revolution is the arc line. Through setting up straight tube section and baffle for the air current gets into from the straight tube section, then passes through the baffle, can effectively reduce the air current resistance, is convenient for the discharge of air current.
Description
Technical Field
The utility model belongs to vehicle air conditioner field of airing exhaust especially relates to a subway vehicle hood device of airing exhaust.
Background
The exhaust hood is an important component of an exhaust system of a subway vehicle, but no related design standard exists at present, so that the problems that the positive pressure in the subway vehicle is too high and the door is difficult to close and the driving safety is influenced due to too large exhaust resistance in the actual operation of the subway vehicle occur. Some subway vehicle cab interior exhaust system designs improperly and leads to that air conditioning unit does not send into cold wind. The advent of these problems illustrates that there are many more problems to be solved in subway vehicle exhaust systems, including exhaust hoods. The subway vehicle air exhaust hood is arranged at the top of the carriage, is designed into a structure with a flat appearance and a shielding function and is attached to the surface of the top of the carriage in order to reduce the pneumatic resistance of the carriage body in the advancing process, prevent rain and snow from entering the carriage and achieve the purposes of attractiveness and the like. The flat flow channel and the excessive shielding measures increase the flow resistance of the exhaust hood, which is unfavorable for the exhaust system. In the existing exhaust hood for the metro vehicle, as shown in fig. 1, airflow enters from an air inlet of a lower cover plate, firstly rushes to the top of the upper cover plate, and moves to small exhaust holes at the periphery of the hood around after the airflow direction is turned by 90 degrees, so that the kinetic energy loss is large.
Tests show that the flow resistance of the exhaust hood can be reduced by about one third by additionally arranging the flow guide device on the exhaust hood of the subway vehicle.
Disclosure of Invention
In order to solve the above problems, an object of the present invention is to provide a wind cowl device for subway vehicles, which can significantly reduce the flow resistance of the wind cowl through the arrangement of the flow guiding body
In order to realize the purpose of the utility model, the utility model adopts the following technical scheme:
the utility model provides a hood device for railcar is aired exhaust, includes hood body and baffle, and the hood body includes upper cover plate, lower apron and straight tube section, and lower apron is connected in the lower port department of upper cover plate, and straight tube section upper end is connected on the lower apron and is communicated with each other with the inner chamber of upper cover plate, is provided with the baffle on the inside top surface of upper cover plate, and the baffle is big-end-up's solid of revolution, and the axis of the solid of revolution is the vertical center line of upper cover plate, and the generating line of the solid of revolution is the circular arc line.
Furthermore, the lower port of the upper cover plate is formed by bending the peripheral side edge of the upper cover plate downwards
Furthermore, the central axis of the flow guide body and the central axis of the straight pipe section are positioned on the same straight line.
Furthermore, the upper end surface of the flow conductor is welded on the top surface inside the upper cover plate.
Furthermore, the blast cap body and the flow guide body are made of stainless steel.
Due to the adoption of the technical scheme, the utility model discloses following superiority has:
through setting up straight tube section and baffle for the air current gets into from the straight tube section, then passes through the baffle, can effectively reduce the air current resistance, is convenient for the discharge of air current.
Drawings
FIG. 1 is a schematic structural view of a conventional exhaust hood;
FIG. 2 is a schematic structural view of the present invention;
in the figure: 1. an upper cover plate; 2. a lower cover plate; 3. a flow conductor; 4. a straight pipe section; 5. and small air exhaust holes.
Detailed Description
The technical solution of the present invention will be further described in detail with reference to the accompanying drawings and embodiments.
As shown in fig. 2, a hood device for metro vehicle exhaust comprises a hood body and a flow guide body, wherein the hood body comprises an upper cover plate 1, a lower cover plate 2 and a straight pipe section 4, the lower cover plate 2 is connected to the lower port of the upper cover plate 1, the upper end of the straight pipe section 4 is connected to the lower cover plate 2 and communicated with the inner cavity of the upper cover plate 1, the flow guide body 3 is arranged on the top surface inside the upper cover plate 1, the flow guide body 3 is a revolving body with a large upper part and a small lower part, the axis of the revolving body is the vertical central line of the upper cover plate, and the bus of the revolving body is an arc line.
The lower port of the upper cover plate 1 is formed by bending the peripheral side edge of the upper cover plate downwards.
The central axis of the flow conductor 3 and the central axis of the straight pipe section are positioned on the same straight line.
The upper end surface of the current carrier 3 is welded on the top surface of the inner part of the upper cover plate 1.
The blast cap body and the flow guide body 3 are both made of stainless steel.
The utility model discloses in, lower apron 2 comprises bottom plate and curb plate all around an organic whole, and the center department of bottom plate is provided with the fresh air inlet, and curb plate and bottom plate all around enclose into a cavity, are provided with a plurality of apertures of airing exhaust on the curb plate, and the air current gets into the cavity from the fresh air inlet and then discharges from aperture 5 of airing exhaust.
The upper end of the straight pipe section 4 extends from the air inlet and is welded with the inner side surface of the side plate, and the central axis of the straight pipe section is superposed with the central hole line of the air inlet.
As the utility model discloses a preferred, the height of baffle 3 is 60mm, and the diameter of baffle upper end is 120mm, and the baffle generating line is the radius and is 60 mm's quarter circular arc, and during the installation, the central axis of baffle and the central axis of straight tube section are coincidence, and the baffle up end welds on the inner wall of upper cover plate.
Claims (5)
1. The utility model provides a subway vehicle blast cap device of airing exhaust, includes hood body and baffle, its characterized in that: the blast cap body comprises an upper cover plate, a lower cover plate and a straight pipe section, wherein the lower cover plate is connected to the lower port of the upper cover plate, the upper end of the straight pipe section is connected to the lower cover plate and communicated with the inner cavity of the upper cover plate, a flow guide body is arranged on the top surface inside the upper cover plate, the flow guide body is a revolving body with a large upper part and a small lower part, the axis of the revolving body is the vertical central line of the upper cover plate, and the generatrix of the revolving body is.
2. The metro vehicle exhaust hood device according to claim 1, wherein: the lower port of the upper cover plate is formed by bending the peripheral side edge of the upper cover plate downwards.
3. The metro vehicle exhaust hood device according to claim 1, wherein: the central axis of the flow guide body and the central axis of the straight pipe section are positioned on the same straight line.
4. The metro vehicle exhaust hood device according to claim 1, wherein: the upper end surface of the flow conductor is welded on the top surface inside the upper cover plate.
5. The metro vehicle exhaust hood device according to claim 1, wherein: the blast cap body and the flow guide body are made of stainless steel materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921268312.5U CN211139327U (en) | 2019-08-07 | 2019-08-07 | Subway vehicle air exhaust hood device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921268312.5U CN211139327U (en) | 2019-08-07 | 2019-08-07 | Subway vehicle air exhaust hood device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211139327U true CN211139327U (en) | 2020-07-31 |
Family
ID=71761049
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921268312.5U Active CN211139327U (en) | 2019-08-07 | 2019-08-07 | Subway vehicle air exhaust hood device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211139327U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114162156A (en) * | 2021-11-15 | 2022-03-11 | 中车唐山机车车辆有限公司 | Intercooler exhaust window for vehicle |
-
2019
- 2019-08-07 CN CN201921268312.5U patent/CN211139327U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114162156A (en) * | 2021-11-15 | 2022-03-11 | 中车唐山机车车辆有限公司 | Intercooler exhaust window for vehicle |
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