Fan assembly for subway tunnel piston wind power generation

Abstract

The utility model discloses a subway tunnel piston wind power generation fan assembly which comprises a tunnel body, a middle partition plate is arranged in the middle of the tunnel body and divides the tunnel body into a left running channel and a right running channel, and a subway runs in the running channels. A supporting frame is fixed to the bottom faces of the corresponding side walls of the two operation channels of the tunnel body, and a plurality of jet fans which are stacked up and down are fixed to the supporting frame. The jet fan directly adopts the permanent magnet synchronous motor, so that the jet fan can be directly used as a generator, the jet fan is mounted on one side wall close to the tunnel body, a shell of the jet fan is not prone to shaking, the fixing effect on the jet fan is increased through the upper connecting piece and the side connecting piece, the air inlet amount is increased through the air collecting cover body, and the service life of the jet fan is prolonged. Therefore, the power generation effect is improved.

Description

Technical Field:

[0001] The utility model relates to the technical field of tunnel power generation equipment, and more specifically to a fan assembly for generating electricity by piston wind in a subway tunnel. Background Art:

[0002] When a subway train runs in a tunnel, the air in the tunnel is driven by the subway train and flows along the direction of the subway train's advance. This phenomenon is called the piston effect of the subway train, and the airflow formed thereby is called piston airflow. In order to maintain the air circulation in the subway tunnel, there are air shafts connected to the ground at both ends of each subway station. Through the air shafts, piston wind is used to exchange air between the tunnel and the outside, ensuring the air quality in the tunnel and controlling the temperature in the tunnel to meet the requirements of train operation and personnel maintenance.

[0003] Moreover, for the operation section of the subway train, the requirements of normal operation ventilation fans for blockage, fire and other accident ventilation should be considered. The accident ventilation usually adopts the scheme of mechanical ventilation with jet fans. For general sections, the usual practice is to set two jet fans at each end of the adjacent stations, and a total of four jet fans are set in one station.

[0004] For jet fans, in most parts of the country, jet fans are only used during accident ventilation. In some areas with relatively hot summers, jet fans are turned on for a period of time to assist ventilation when the outdoor air temperature is low in the early morning and evening under normal operating conditions. However, in any case, jet fans are in an idle state for most of the time, and at the same time, the piston wind generated during the operation of the subway train is also discharged.

[0005] The long-term non-use of jet fans and the non-utilization of piston wind both result in a waste of resources. Therefore, a jet fan power generation system can be designed to utilize the piston wind generated during the operation of the subway train.

[0006] Therefore, Chinese Patent Publication No. 202322448851.X discloses a jet fan power generation system. It utilizes the idle time when the fan in the tunnel stops running, and uses piston wind to drive the fan blades to rotate and generate electricity. After power conversion and energy storage equipment, it is used for loads such as lighting in the station. At the same time, according to information such as the temperature in the tunnel and the area where the tunnel is located, the power generation mode is adjusted to balance the relationship between the temperature demand in the tunnel and the power generation efficiency, making the utilization of piston wind more efficient and realizing energy recovery.

[0007] However, the area of the air inlet of the fan in the tunnel is limited, and the piston wind obtained is also limited. Therefore, its power generation effect is limited;

[0008] Meanwhile, in the existing jet fans, they are generally fixed at the bottom by bolts. When piston wind passes through, there is no connecting support structure on its upper or side part, which will cause vibration on the upper and side parts of the jet fan's shell, affecting its service life. Content of the utility model:

[0009] The purpose of the present utility model is to overcome the deficiencies of the prior art and provide a fan assembly for piston wind power generation in subway tunnels. It directly uses a permanent magnet synchronous motor for the jet fan, enabling it to be directly used as a generator. Moreover, the jet fan is installed on one side wall close to the tunnel main body, making its shell not easily vibrate. And it increases the fixing effect on the jet fan through upper connecting parts and side connecting parts, and improves the air intake volume through the air collecting hood body, thereby improving its power generation effect.

[0010] The solution for the present utility model to solve the above technical problems is:

[0011] A fan assembly for piston wind power generation in subway tunnels includes a tunnel main body. A middle partition board is arranged in the middle of the tunnel main body, and the middle partition board divides the tunnel main body into two running channels on the left and right. The subway runs in the running channels. On the bottom surface of one side wall close to the side wall of the tunnel main body in the two running channels of the tunnel main body, a support frame is fixed, and a plurality of jet fans stacked up and down are fixed on the support frame.

[0012] The support frame is a frame body made of reinforced concrete, which includes a plurality of vertical support columns. The bottom ends of the vertical support columns are fixed on the bottom surface close to the side wall in the large-width part of the running channel. A horizontally extending cross beam is fixed between adjacent two vertical support columns, and a horizontal support plate is fixed on the corresponding cross beam and the side wall of the large-width part of the running channel.

[0013] On the ground in front of the air inlet end of the support frame, an air collecting hood body is fixed. There are two connection through holes at the rear of the air collecting hood body, and the connection through holes face the air inlets of the corresponding jet fans.

[0014] The air collecting hood body is a frame-shaped hood formed by welding and fixing an upper plate body, a lower plate body, a left plate body and a right plate body. A first middle partition board is fixed in the middle of the frame-shaped hood, and the first middle partition board divides the frame-shaped hood into an upper air inlet cavity and a lower air inlet cavity. Two rear guiding hood bodies composed of a plurality of inclined plate parts are fixed on the rear wall surface of the air collecting hood body. The rear guiding hood body covers the corresponding upper air inlet cavity or lower air inlet cavity. A connection through hole is formed in the middle of the rear guiding hood body, and the connection through hole faces the air inlet of the corresponding jet fan.

[0015] The jet fan adopts a permanent magnet synchronous motor.

[0016] The prominent effect of the present utility model is:

[0017] It directly uses a permanent magnet synchronous motor for the jet fan, enabling it to be directly used as a generator. Moreover, the jet fan is installed on one side wall close to the tunnel main body, making its shell not easy to shake. And its fixing effect on the jet fan is increased through the upper connecting piece and the side connecting piece, and the air intake volume is increased through the air collecting hood body, thereby improving its power generation effect. Description of the Drawings:

[0018] Figure 1 is a partial structural schematic diagram of the present utility model;

[0019] Figure 2 is a partial structural schematic diagram of the present utility model in a top view state at the operating passage where it is located;

[0020] Figure 3 is the circuit schematic diagram of the energy storage system;

[0021] Figure 4 is Figure 1 the partial enlarged view of;

[0022] Figure 5 is Figure 2 the partial enlarged view of;

[0023] Figure 6 is the partial structural schematic diagram with the air collecting hood body installed;

[0024] Figure 7 is the partial structural schematic diagram of the air collecting hood body. Detailed Implementation Manner:

[0025] Example, as shown in Figures 1 to 7 A fan assembly for generating power from piston wind in a subway tunnel includes a tunnel main body 10. A middle partition plate 11 is arranged in the middle of the tunnel main body 10. The middle partition plate 11 divides the tunnel main body 10 into two left and right operating passages 12. The subway travels in the operating passages 12. The bottom surface of the corresponding side walls of the two operating passages 12 of the tunnel main body 10 close to the large-width section is fixed with a support frame 20, and a plurality of jet fans 30 stacked up and down are fixed on the support frame 20.

[0026] The support frame 20 is a frame made of reinforced concrete. It includes a plurality of vertical support columns 21. The bottom ends of the vertical support columns 21 are fixed on the bottom surface of the large-width part of the operating passage 12 close to the side wall. A horizontally extending cross beam 29 is fixed between every two adjacent vertical support columns 21. A horizontal support plate 22 is fixed on the corresponding cross beam 29 and the side wall of the large-width part of the operating passage 12. In this embodiment, two horizontally aligned horizontal support plates 22 are installed.

[0027] The jet fan 30 is fixedly connected to the horizontal support plate 22 by bolts.

[0028] Furthermore, at least one lifting bolt 31 is fixed in the middle of the top of the jet fan 30. A top fixing steel plate 23 corresponding to the lifting bolt 31 is embedded in the top surface of the operation passage 12 directly above the jet fan 30 or the bottom surface of the middle part of the transverse support plate 22 directly above it. A top fixing ring 24 is fixed to the bottom surface of the top fixing steel plate 23. The top end of the upper connecting member 25 is fixed to the corresponding top fixing ring 24, and the bottom end of the upper connecting member 25 is fixed to the corresponding lifting bolt 31. The upper connecting member 25 is a rod member.

[0029] At least one side connection lifting ring 13 is fixed to the side wall of the large-width part of the operation passage 12 facing the jet fan 30. A side fixing steel plate 14 corresponding to the side connection lifting ring 13 is embedded and fixed on the side wall of the large-width part of the operation passage 12 facing the side connection lifting ring 13. A side connection ring body 15 is fixed to the wall surface of the side fixing steel plate 14. One end of the side connecting member 16 is fixed to the corresponding side connection lifting ring 13, and the other end of the side connecting member 16 is fixed to the corresponding side connection ring body 15. The side connecting member 16 is also a rod member.

[0030] The side connecting member 16 and the upper connecting member 25 can improve the support and fixation of the jet fan 30, so that its outer casing is not easily shaken when blown by the piston wind.

[0031] A wind collecting hood body 40 is fixed on the ground in front of the air inlet end of the support frame 20 (that is, a wind collecting hood body 40 is fixed on the ground in front of the end of the support frame 20 facing the piston wind). Two connection through holes 41 are provided at the rear of the wind collecting hood body 40, and the connection through holes 41 face the air inlets of the corresponding jet fans 30.

[0032] Furthermore, the wind collecting hood body 40 is a frame-shaped hood formed by welding an upper plate body, a lower plate body, a left plate body and a right plate body. A first intermediate partition plate 43 is fixed in the middle of the frame-shaped hood. The first intermediate partition plate 43 divides the frame-shaped hood into an upper air inlet cavity and a lower air inlet cavity. The first intermediate partition plate 43 evenly divides the frame-shaped hood. Two rear guiding hood bodies 44 composed of a plurality of inclined plate parts are fixed on the rear wall surface of the wind collecting hood body 40. The rear guiding hood bodies 44 cover the corresponding upper air inlet cavity or lower air inlet cavity. A connection through hole 41 is formed in the middle of the rear guiding hood body 44, and the connection through hole 41 faces the air inlet of the corresponding jet fan 30. Figure 2 and Figure 5 The wind collecting hood body 40 in

[0033] An annular protruding sleeve part 42 is formed on the rear wall surface of the rear guiding hood body 44 at the connection through hole 41. The rear end surface of the annular protruding sleeve part 42 is close to or abuts against the front end surface of the air inlet of the corresponding jet fan 30. The annular protruding sleeve part 42 is communicated with and aligned with the connection through hole 41.

[0034] The outer wall of the left or right plate of the air collecting hood body 40 is closely attached and fixed to the corresponding right side wall of the tunnel main body 10, and the corresponding other side plate corresponds to the vertical support column 21 of the corresponding support frame 20. The outer wall surface of this side plate does not extend beyond the outer wall of the vertical support column 21 of the corresponding support frame 20 to ensure the space for the subway to travel in the operation passage 12.

[0035] The jet fan 30 adopts a permanent magnet synchronous motor.

[0036] The air collecting hood body 40 of this embodiment greatly improves the air collecting effect, increases the air volume of the piston air entering the jet fan 30, and thus improves its power generation effect. That is, through the air collecting hood body, the wind speed passing through the fan can be increased, and the increased ratio is the ratio of the cross-sectional area of the upper air inlet cavity or the lower air inlet cavity of the air collecting hood body to the cross-sectional area of the air inlet of the corresponding jet fan.

[0037] During use, a control cabinet and an energy storage system of the jet fan 30 are provided on the land ground above the tunnel main body 10, or a control cabinet and an energy storage system of the jet fan 30 are provided in the subway station (generally on the platform layer of the subway station) to control the normal working condition, fire working condition and energy storage working condition of the jet fan 30. All the corresponding jet fans 30 are electrically connected to the control cabinet of the jet fan 30 through power cables, and the jet fan 30 is controlled through the control cabinet of the jet fan 30.

[0038] At the same time, the energy storage system exchanges data with the control cabinet of the jet fan 30.

[0039] During its use, when the jet fan 30 is used for normal operation (normal working condition), the control cabinet of the jet fan 30 controls the corresponding jet fan 30 to operate to achieve ventilation. At this time, all the switches shown below are disconnected, and the energy storage system does not store energy. At this time, the permanent magnet synchronous motor of the jet fan 30 is controlled by the permanent magnet synchronous controller in the control cabinet to control its rotational speed operation. Figure 3 As shown, all the switches below are disconnected, and the energy storage system does not store energy. At this time, the permanent magnet synchronous motor of the jet fan 30 is controlled by the permanent magnet synchronous controller in the control cabinet to control its rotational speed operation.

[0040] During a fire (fire working condition), the control cabinet of the jet fan 30 controls the corresponding jet fan 30 to operate to achieve longitudinal smoke exhaust. At this time, all the switches shown below are disconnected, and the energy storage system does not store energy. At this time, the permanent magnet synchronous motor of the jet fan 30 is controlled by the permanent magnet synchronous controller in the control cabinet to control its rotational speed operation. Figure 3 As shown, all the switches below are disconnected, and the energy storage system does not store energy. At this time, the permanent magnet synchronous motor of the jet fan 30 is controlled by the permanent magnet synchronous controller in the control cabinet to control its rotational speed operation.

[0041] In the energy storage working condition, when the control cabinet of the jet fan 30 controls the corresponding jet fan 30 to stop operating, at this time, the permanent magnet synchronous motor of the jet fan 30 is reversely operated through the piston air to achieve power generation. At this time, the permanent magnet synchronous controller stops controlling, and at this time Figure 3All the switches below are closed. At this time, the energy storage mode is running, and at the same time, part of the electric energy is also supplied to the lighting system and so on.

[0042] At the same time, the energy storage station control system calculates the energy storage capacity according to the actual load, and is equipped with corresponding auxiliary equipment such as rectification and voltage stabilization, so as to convert the piston wind into electric energy for other uses such as lighting work.

[0043] Figure 3 The circuit shown is one of them. There are also many other similar circuits. Their principles and structures of power generation and energy storage are basically the same as the existing well-known content. Therefore, they will not be described in detail.

[0044] The above has described in detail an embodiment of the present invention, but the content described is only the preferred embodiment of the present invention and cannot be considered as limiting the scope of implementation of the present invention. All equivalent changes and improvements made according to the scope of the application of the present invention should still fall within the scope covered by the patent of the present invention.

Claims

1. A fan assembly for piston wind power generation in a subway tunnel, comprising a tunnel body (10), wherein a middle partition plate (11) is arranged in the middle of the tunnel body (10), wherein the middle partition plate (11) divides the tunnel body (10) into two left and right running channels (12), wherein the subway travels in the running channel (12), and wherein: A support frame (20) is fixed to the bottom surface of one side wall of the two running channels (12) of the tunnel body (10) close to the side wall of the tunnel body (10), and a plurality of jet fans (30) stacked up and down are fixed to the support frame (20); The support frame (20) is a frame made of reinforced concrete, comprising a plurality of vertical support columns (21), the bottom ends of the vertical support columns (21) being fixed to the bottom surface of the wide portion of the running channel (12) close to the side wall, a transverse beam (29) extending forward and backward is fixed between two adjacent vertical support columns (21), and a transverse support plate (22) is fixed to the corresponding transverse beam (29) and the side wall of the wide portion of the running channel (12); The transverse support plate (22) is fixedly connected with a jet fan (30) by means of bolts; A hanging bolt (31) is fixed in the middle of the top of the jet fan (30), an upper fixing steel plate (23) is embedded in the top surface of the running channel (12) directly above the jet fan (30) or the middle bottom surface of the horizontal support plate (22) directly above the jet fan (30), an upper fixing ring (24) is fixed to the bottom surface of the upper fixing steel plate (23), the top end of the upper connecting piece (25) is fixed to the corresponding upper fixing ring (24), and the bottom end of the upper connecting piece (25) is fixed to the hanging bolt (31).

2. A fan assembly for piston wind power generation in a subway tunnel according to claim 1, characterized in that: A side connection hoisting ring (13) is fixed to the side wall of the wide portion of the running channel (12) of the jet fan (30); a side fixing steel plate (14) is pre-buried and fixed to the side wall of the wide portion of the running channel (12) facing the side connection hoisting ring (13); a side connection ring body (15) is fixed to the wall surface of the side fixing steel plate (14); one end of a side connection piece (16) is fixed to the side connection hoisting ring (13); and the other end of the side connection piece (16) is fixed to the side connection ring body (15).

3. A fan assembly for piston wind power generation in a subway tunnel according to claim 1, characterized in that: The support frame (20) is fixed with an air collecting cover (40) on the ground in front of the air inlet, and the rear of the air collecting cover (40) is provided with two connecting through holes (41), and the connecting through holes (41) are opposite to the corresponding air inlet of the jet fan (30).

4. A fan assembly for piston wind power generation in a subway tunnel according to claim 3, characterized in that: The air collecting hood (40) is a frame-shaped hood formed by welding and fixing an upper plate, a lower plate, a left plate and a right plate. A first intermediate partition plate (43) is fixed in the middle of the frame-shaped hood. The first intermediate partition plate (43) divides the frame-shaped hood into an upper air inlet cavity and a lower air inlet cavity. Two rear guide hoods (44) composed of a plurality of inclined plate portions are fixed on the rear wall surface of the air collecting hood (40). The rear guide hoods (44) cover the corresponding upper air inlet cavity or the lower air inlet cavity. A connecting through hole (41) is formed in the middle of the rear guide hood (44).

5. The fan assembly for piston wind power generation in a subway tunnel according to claim 3, characterized in that: An annular raised sleeve portion (42) is formed on the rear wall surface of the rear guide cover body (44) at the connecting through hole (41), and the rear end surface of the annular raised sleeve portion (42) is close to or in close contact with the front end surface of the corresponding jet fan (30) at the air inlet, and the annular raised sleeve portion (42) is connected to and aligned with the connecting through hole (41).

6. A fan assembly for piston wind power generation in a subway tunnel according to claim 3, characterized in that: The outer side wall of the left plate or the right plate of the wind collecting cover (40) is tightly attached to and fixed on the corresponding right side wall of the tunnel body (10), and the other corresponding side plate corresponds to the vertical support column (21) of the corresponding support frame (20).

7. The fan assembly for piston wind power generation in a subway tunnel according to claim 1, characterized in that: The jet fan (30) adopts a permanent magnet synchronous motor.

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