Subway induced fan

Abstract

The utility model relates to the technical field of rail transit, in particular to a subway induction fan which comprises an air pipeline. A mounting plate is fixed on the inner wall of the air pipeline, and a mounting cavity is formed between the mounting plate and the inner wall of the rear end of the air pipeline; a motor is mounted at the top of the mounting plate, and a turbofan which penetrates through the mounting plate and extends to the position below the bottom of the mounting plate is mounted at one end of the motor; an air inlet is formed in the left side of the air pipeline; due to the fact that the turbofan blows air in the running direction of the train, on one hand, the wind direction downstream with the train is formed in the whole depot, the friction force between the wind and the train is reduced, on the other hand, the train can be cooled, the temperature and loss of the train are reduced, and the service life of the train is greatly prolonged. And the turbofan is started when the train enters the parking lot and is stopped when the train leaves away from the parking lot, so that the working efficiency of the turbofan is improved, the power loss of the turbofan is also reduced, and the overall use cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of rail transportation, in particular to a subway induction fan. Background Art

[0002] Rail transit refers to a type of transportation vehicle or transportation system that requires operating vehicles to travel on specific tracks. The national standard "Common Terms and Terminology of Urban Public Transportation" defines urban rail transit as "a general term for rapid and large-capacity public transportation that is usually powered by electricity and adopts a wheel-rail operation mode; subway is a type of urban rail transit line system, which refers to rapid, large-capacity, electric-powered rail transit built in the city. Trains run on fully enclosed lines. Lines in the central urban area are basically located in underground tunnels, and lines outside the central urban area are generally located on viaducts or on the ground.

[0003] When a rail transit train returns to the depot, it suddenly enters the interior from the outdoors, and the speed is not low (although it has been reduced from high speed to low speed, the speed is still not low, and the friction is also very large during the continuous deceleration process). The friction with the air is already very large, and the friction when entering the depot will be further increased, which will increase the temperature and loss of the train itself, and greatly shorten the service life of the train.

[0004] Therefore, a subway induced fan is proposed. Utility Model Content

[0005] The utility model aims to provide a subway induced fan.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A subway induced fan, comprising:

[0008] Air ducts;

[0009] A mounting plate is fixed to the inner wall of the air duct, and a mounting cavity is formed between the mounting plate and the inner wall at the rear end of the air duct;

[0010] A motor is installed on the top of the mounting plate, and a turbo fan is installed at one end of the motor, which penetrates the mounting plate and extends to a position below the bottom of the mounting plate;

[0011] An air inlet is arranged on the left side of the air duct;

[0012] An air outlet duct is installed on the right side of the air duct.

[0013] Preferably, a heat dissipation hole is provided on the outer wall at the rear end of the air duct, and the heat dissipation hole is communicated with the installation cavity.

[0014] Preferably, the top of the air duct is connected to the inner top of the vehicle section by fixing bolts.

[0015] Preferably, the installation direction of the air outlet duct is consistent with the forward direction of the subway.

[0016] Preferably, a module is installed on the outer wall of the air duct.

[0017] Preferably, the module is composed of a noise detection module and a control module;

[0018] The noise detection module is electrically connected to the control module, and the control module is electrically connected to the motor;

[0019] The noise detection module is used to detect the noise in the vehicle section;

[0020] The control module is used to control the opening and closing of the motor;

[0021] The noise detection module has a built-in minimum noise value;

[0022] If the noise value detected by the noise detection module is greater than the minimum noise value built in, it means that the train is approaching the site. The noise detection module will send a signal to the control module, which will then start the motor, and the motor will drive the turbofan to work.

[0023] If the noise value detected by the noise detection module is lower than its built-in minimum noise value, it means that the train has gone far into the field. The noise detection module will send a signal to the control module, which will then shut down the motor and stop the turbofan from working.

[0024] Compared with the prior art, the beneficial effects of the utility model are:

[0025] The utility model is provided with a noise detection module. If the noise value detected by the noise detection module is greater than the minimum noise value built in it, it proves that the train is approaching the site. The noise detection module will send a signal to the control module, and the control module will start the motor, and the motor will drive the turbo fan to work;

[0026] If the noise value detected by the noise detection module is lower than the minimum noise value built in, it means that the train has gone far into the field. The noise detection module will send a signal to the control module, which will then shut down the motor and stop the turbofan from working.

[0027] Compared with the existing ones, since the turbofan blows air in the direction of the train, on the one hand, the wind direction in the entire vehicle depot is formed in the same direction as the train, reducing the friction between the wind and the train, and on the other hand, it can cool the train, reduce the temperature and loss of the train itself, and greatly increase the service life of the train;

[0028] The turbofan is turned on when the train approaches the yard and turned off when the train moves away from the yard, which improves the working efficiency of the turbofan, reduces the power loss of the turbofan, and reduces the overall cost of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0030] Figure 2 It is a partial structural schematic diagram of the utility model;

[0031] Figure 3 It is a schematic diagram of the heat dissipation hole structure in the utility model;

[0032] Figure 4 This is a system block diagram of the utility model;

[0033] Figure 5 This is a system block diagram of the noise detection module of the utility model.

[0034] In the figure: 1. air duct; 2. mounting plate; 3. mounting cavity; 4. motor; 5. turbo fan; 6. air inlet; 7. air outlet duct; 8. module; 9. heat dissipation hole. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0036] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0037] Embodiment 1

[0038] See also Figure 1-4, the utility model provides a technical solution: to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a subway induced fan, comprising: an air duct 1; a mounting plate 2 is fixed on the inner wall of the air duct 1, and a mounting cavity 3 is formed between the mounting plate 2 and the inner wall at the rear end of the air duct 1; a motor 4 is installed on the top of the mounting plate 2, and a turbo fan 5 is installed at one end of the motor 4, which penetrates the mounting plate 2 and extends to the position below the bottom of the mounting plate 2; an air inlet 6 is arranged on the left side of the air duct 1; an air outlet duct 7 is installed on the right side of the air duct 1, and a heat dissipation hole 9 is opened on the outer wall at the rear end of the air duct 1, and the heat dissipation hole 9 is connected with the mounting cavity 3, the top of the air duct 1 is connected to the inner top of the vehicle section by fixing bolts, and the installation direction of the air outlet duct 7 is consistent with the forward direction of the subway, and a module 8 is installed on the outer wall of the air duct 1, and the module 8 consists of a noise detection module and a control module; the noise detection module is electrically connected to the control module, and the control module is electrically connected to the motor 4; the noise detection module is used to detect the noise in the vehicle section; the control module is used to control the opening and closing of the motor 4; the noise detection module has a built-in minimum noise value;

[0039] If the noise value detected by the noise detection module is greater than the minimum noise value built in it, it means that the train is approaching the site. The noise detection module will send a signal to the control module, and the control module will start the motor 4, and the motor 4 will drive the turbo fan 5 to work;

[0040] If the noise value detected by the noise detection module is less than the minimum noise value built in, it means that the train has gone far into the field. The noise detection module will send a signal to the control module, which will then turn off the motor 4 and stop the turbofan 5 from working.

[0041] Specifically, the utility model is provided with a noise detection module. If the noise value detected by the noise detection module is greater than the minimum noise value built in it, it proves that the train is approaching the site. The noise detection module will send a signal to the control module, and the control module will start the motor 4, and the motor 4 will drive the turbo fan 5 to work;

[0042] If the noise value detected by the noise detection module is less than the minimum noise value built in, it means that the train is approaching and driving far away. The noise detection module will send a signal to the control module, and the control module will turn off the motor 4 and the turbo fan 5 will stop working.

[0043] Compared with the existing ones, since the turbo fan 5 blows air in the direction of the train, on the one hand, the wind direction in the whole vehicle depot is formed in the downstream of the train, reducing the friction between the wind and the train, and on the other hand, it can cool the train, reduce the temperature and loss of the train itself, and greatly improve the service life of the train;

[0044] The turbofan 5 is turned on when the train approaches the yard, and is turned off when the train moves away from the yard, which improves the working efficiency of the turbofan 5, reduces the power loss of the turbofan 5, and reduces the overall use cost.

[0045] Working principle:

[0046] First, a noise detection module is provided. If the noise value detected by the noise detection module is greater than the minimum noise value built in it, it means that the train is approaching the site. The noise detection module will send a signal to the control module, and the control module will start the motor 4, and the motor 4 will drive the turbo fan 5 to work.

[0047] If the noise value detected by the noise detection module is less than the minimum noise value built in, it means that the train is approaching and driving far away. The noise detection module will send a signal to the control module, and the control module will turn off the motor 4 and the turbo fan 5 will stop working.

[0048] Compared with the existing ones, since the turbo fan 5 blows air in the direction of the train, on the one hand, the wind direction in the whole vehicle depot is formed in the downstream of the train, reducing the friction between the wind and the train, and on the other hand, it can cool the train, reduce the temperature and loss of the train itself, and greatly improve the service life of the train;

[0049] The turbofan 5 is turned on when the train approaches the yard, and is turned off when the train moves away from the yard, which improves the working efficiency of the turbofan 5, reduces the power loss of the turbofan 5, and reduces the overall use cost.

[0050] Embodiment 2

[0051] See also Figure 5 Based on the above embodiment 1, the noise detection module includes:

[0052] The noise collection submodule obtains the real-time noise data of the air duct 1;

[0053] The noise data includes the total value of the duct noise and the total value of the duct noise difference;

[0054] In some embodiments, the duct noise values ​​within the collection period are obtained, and the duct noise values ​​within the collection period are added and summed to obtain a total duct noise value;

[0055] Obtain the duct noise value within the collection period, subtract the duct noise values ​​of adjacent time periods within the collection period to obtain the connected duct noise difference, add the connected duct noise difference values ​​to obtain the total duct noise difference value;

[0056] Among them, the collection period can be 0.1s, 1s, or 2s;

[0057] The noise analysis submodule analyzes the current duct noise data based on real-time noise data to obtain the duct noise performance value, compares the duct noise performance value with the built-in minimum noise value, and generates duct noise high and duct noise low signals;

[0058] Among them, the duct noise performance value is obtained by weighted calculation of the total duct noise value and the total duct noise difference value;

[0059] In some embodiments, the noise analysis submodule obtains the total value of the duct noise and the total value of the duct noise difference, and marks them as ZZf and ZZc respectively;

[0060] Substitute the total duct noise value ZZf and the total duct noise difference value ZZc into the formula ZZB=a1*ZZf+a2*ZZc to calculate the duct noise performance value ZZB; where a1 and a2 are both proportional coefficients, a1 is 0.45, and a2 is 0.16;

[0061] Compare the obtained duct noise performance value with the built-in minimum noise value;

[0062] If the duct noise performance value is greater than the built-in minimum noise value, a large duct noise signal is generated;

[0063] If the duct noise performance value is less than or equal to the built-in minimum noise value, a small duct noise signal is generated;

[0064] Among them, the large duct noise signal indicates that the duct noise performance value of the current duct 1 is large, exceeding the built-in minimum noise value, indicating that the train is about to enter the yard, so that when the large duct noise signal is received, the personnel in the station area can make arrangements; and the small duct noise signal indicates that the duct noise performance value of the current duct 1 is large, not exceeding the built-in minimum noise value, indicating that the train has not yet entered the yard;

[0065] The noise processing submodule obtains the large noise signal of the noise analysis submodule, and determines whether there are interference factors that cause abnormal noise according to the large noise signal monitoring and identification;

[0066] The specific working process of the noise processing submodule is as follows:

[0067] Step 1: Obtain the train distance, train speed difference, train deceleration difference, duct temperature, and duct humidity, and mark them as TB1, TB2, TB3, TB4, and TB5 respectively. Calculate the noise influence coefficient XL through the formula XL={(b1*TB1+b2*TB2+b3*TB3+b4*TB4+b5*TB5)1 / 2} / (b1+b2+b3+b4+b5); wherein b1, b2, b3, b4, and b5 are all proportional coefficients, b1 is 0.63, b2 is 0.34, b3 is 0.62, b4 is 0.30, and b5 is 0.13;

[0068] Step 2: Compare the obtained noise influence coefficient XL with the noise influence coefficient threshold;

[0069] If the noise influence coefficient XL is greater than or equal to the noise influence coefficient threshold, a noise signal accuracy signal is generated;

[0070] If the noise influence coefficient XL is less than the noise influence coefficient threshold, a noise signal inaccuracy signal is generated;

[0071] Among them, the train distance is expressed as the distance between two trains heading in opposite directions;

[0072] The train speed difference is expressed as the speed difference between two trains moving in opposite directions;

[0073] The train deceleration difference is expressed as the deceleration difference between two trains moving in opposite directions;

[0074] The duct temperature is expressed as the average temperature in the duct;

[0075] Duct humidity is expressed as the average humidity value in the duct.

[0076] The noise signal is accurate, indicating that the duct noise signal of the current noise analysis submodule is correct under the influence of parameters such as train distance, train speed difference, train deceleration difference, duct temperature, and duct humidity.

[0077] The inaccurate noise signal indicates that the large signal of the air duct noise of the current noise analysis submodule is incorrect under the influence of parameters such as train distance, train speed difference, train deceleration difference, air duct temperature, and air duct humidity;

[0078] The noise feedback submodule obtains the accurate noise signal and the inaccurate noise signal of the noise processing submodule. When the accurate noise signal is obtained, it proves that the train is approaching the site. The noise detection module will send a signal to the control module, and the control module will start the motor 4, and the motor 4 will drive the turbo fan 5 to work;

[0079] If the noise signal is an inaccurate signal, it is necessary to obtain real-time noise data through the noise collection submodule, and analyze and process it. If an inaccurate noise signal is still generated, it proves that the train has gone far into the yard. The noise detection module will send a signal to the control module, and the control module will turn off the motor 4 and the turbo fan 5 will stop working.

[0080] The technical solution of the embodiment of the utility model is as follows: by acquiring real-time noise data of the air duct 1, based on the real-time noise data, analyzing the current air duct noise data, obtaining the air duct noise performance value, comparing the air duct noise performance value with the built-in minimum noise value, generating air duct noise high and air duct noise low signals, obtaining the large noise signal of the noise analysis submodule, and based on the large noise signal monitoring and identification, judging whether there are interference factors that affect the abnormal situation of its noise, obtaining the noise signal accurate signal and the noise signal inaccurate signal of the noise processing submodule, when the noise signal accurate signal is obtained, it proves that the train is approaching, the noise detection module will send a signal to the control module, the control module will start the motor 4 again, and the motor 4 will drive the turbofan 5 to work; thereby improving the accuracy of the noise detection module.

[0081] In the description of the present invention, it should be understood that the terms "center", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the scope of protection of the present invention.

[0082] The above shows and describes the basic principles, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A subway induced fan, characterized in that: include: Air duct (1); A mounting plate (2) is fixed to the inner wall of the air duct (1), and a mounting cavity (3) is formed between the mounting plate (2) and the inner wall at the rear end of the air duct (1); A motor (4) is mounted on the top of the mounting plate (2), and a turbofan (5) is mounted on one end of the motor (4), the turbofan (5) penetrating the mounting plate (2) and extending to a position below the bottom of the mounting plate (2); The air duct (1) is provided with an air inlet (6) on the left side; An air outlet duct (7) is installed on the right side of the air duct (1); A module (8) is installed on the outer wall of the air duct (1); The module (8) is composed of a noise detection module and a control module; The noise detection module is electrically connected to the control module, and the control module is electrically connected to the motor (4); The noise detection module is used to detect the noise in the vehicle section; The control module is used to control the opening and closing of the motor (4); The noise detection module has a built-in minimum noise value; If the noise value detected by the noise detection module is greater than the minimum noise value built in it, it proves that the train is approaching the site, and the noise detection module will send a signal to the control module, and the control module will start the motor (4), and the motor (4) will drive the turbo fan (5) to work; If the noise value detected by the noise detection module is less than the minimum noise value built in it, it means that the train has gone far into the field. The noise detection module will send a signal to the control module, and the control module will then turn off the motor (4) and the turbo fan (5) will stop working.

2. A subway induced fan according to claim 1, characterized in that: A heat dissipation hole (9) is provided on the outer wall at the rear end of the air duct (1), and the heat dissipation hole (9) is connected to the installation cavity (3).

3. The subway induced fan according to claim 1, characterized in that: The top of the air duct (1) is connected to the inner top of the vehicle section by means of fixing bolts.

4. The subway induced fan according to claim 1, characterized in that: The installation direction of the air outlet duct (7) is consistent with the forward direction of the subway.

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