CN114877454A - Airflow direction adjustable pollutant targeting long-distance multi-stage transportation system and method - Google Patents

Airflow direction adjustable pollutant targeting long-distance multi-stage transportation system and method Download PDF

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Publication number
CN114877454A
CN114877454A CN202210430205.8A CN202210430205A CN114877454A CN 114877454 A CN114877454 A CN 114877454A CN 202210430205 A CN202210430205 A CN 202210430205A CN 114877454 A CN114877454 A CN 114877454A
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CN
China
Prior art keywords
air supply
air
distance
supply device
exhaust
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Pending
Application number
CN202210430205.8A
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Chinese (zh)
Inventor
周宇
李志远
权梦凡
王怡
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Xian University of Architecture and Technology
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Xian University of Architecture and Technology
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Application filed by Xian University of Architecture and Technology filed Critical Xian University of Architecture and Technology
Priority to CN202210430205.8A priority Critical patent/CN114877454A/en
Publication of CN114877454A publication Critical patent/CN114877454A/en
Pending legal-status Critical Current

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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F7/00Ventilation
    • F24F7/003Ventilation in combination with air cleaning
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00Control or safety arrangements
    • F24F11/70Control systems characterised by their outputs; Constructional details thereof
    • F24F11/72Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
    • F24F11/74Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
    • F24F11/77Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity by controlling the speed of ventilators
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00Control or safety arrangements
    • F24F11/70Control systems characterised by their outputs; Constructional details thereof
    • F24F11/72Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
    • F24F11/79Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling the direction of the supplied air
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/08Air-flow control members, e.g. louvres, grilles, flaps or guide plates
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F7/00Ventilation
    • F24F7/007Ventilation with forced flow
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F7/00Ventilation
    • F24F2007/001Ventilation with exhausting air ducts
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F7/00Ventilation
    • F24F2007/0025Ventilation using vent ports in a wall
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F7/00Ventilation
    • F24F2007/005Cyclic ventilation, e.g. alternating air supply volume or reversing flow direction
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00Control inputs relating to air properties
    • F24F2110/50Air quality properties
    • F24F2110/65Concentration of specific substances or contaminants
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/70Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

Abstract

The invention discloses a pollutant targeted long-distance multi-stage transportation system with adjustable airflow direction, which comprises a long-distance air supply device and an air exhaust device which are arranged in a building, and further comprises a movable relay air supply device; the remote air supply device is used for conveying airflow into the building; the movable relay air supply device is used for conveying the collected polluted airflow to the exhaust device; the exhaust device is used for exhausting the captured polluted air flow out of the building. The invention also discloses a method for carrying out targeted long-distance multi-stage transportation on pollutants with adjustable airflow direction, which is realized by the system for carrying out targeted long-distance multi-stage transportation on pollutants with adjustable airflow direction.

Description

Airflow direction adjustable pollutant targeting long-distance multi-stage transportation system and method
Technical Field
The invention belongs to the technical field of large-space gaseous pollutant control, and particularly relates to a pollutant targeted long-distance multi-stage transportation system with adjustable airflow direction and a method thereof.
Background
At present, industrial plants such as welding plants tend to be increasingly large, and pollution sources in the plants have the characteristics of large quantity, unfixed positions and the like. Comprehensive ventilation is through introducing the harmful gas concentration reduction in the fresh air with whole factory building, and the harmful gas discharge factory building after the rethread air exit will dilute, and there is the disadvantage that ventilation efficiency is poor, the energy consumption is high in this kind of mode, consequently, most of enterprises all adopt the mode of local ventilation to control the pollutant in the factory building, and local exhaust hood just becomes a local ventilation unit for the most common use. Local exhaust hood often need install just can have better control effect apart from the nearer position of pollutant, but in a lot of production processes, owing to receive factory building space and process operation's restriction, hardly install near the pollution source with the exhaust hood, adopt local exhaust hood to hardly realize the control to a plurality of pollution sources simultaneously moreover. Therefore, there is a need to develop a system and a method for targeted long-distance multi-stage transportation of pollutants with adjustable airflow direction, which are suitable for the large-space factory building.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a pollutant targeted long-distance multi-stage transportation system with adjustable airflow direction and a method thereof, so as to solve the problem that the pollutant can not be remotely controlled due to the limited position of a local exhaust device in the prior art.
In order to achieve the purpose, the technical scheme adopted by the invention comprises the following steps:
the pollutant targeting long-distance multi-stage transportation system with adjustable airflow direction comprises a long-distance air supply device and an air exhaust device which are arranged in a building, and further comprises a movable relay air supply device;
the remote air supply device comprises a first outer shell provided with an air supply cavity, an air supply machine is arranged in the air supply cavity, a first air inlet and an air supply outlet which are communicated with the air supply cavity are respectively arranged at two ends of the first outer shell, and the first air inlet is communicated with a main air inlet arranged at the lower part of a first side wall of a building;
the air exhaust devices are arranged at the upper part of a second side wall of the building, the second side wall of the building is arranged opposite to the first side wall of the building, and each air exhaust device corresponds to one or more mobile relay air supply devices; the exhaust device comprises an exhaust pipeline, and an exhaust hood with an exhaust outlet facing downwards is connected to the exhaust pipeline;
the remote air supply device is used for conveying airflow into the building; the movable relay air supply device is used for conveying the collected polluted airflow to the exhaust device; the exhaust device is used for exhausting the captured polluted air flow out of the building.
The invention also has the following technical characteristics:
specifically, the mobile relay air supply device comprises a base, wherein an installation box is arranged on the base, a fan assembly is arranged in the installation box, and a second air inlet is formed in the installation box; still vertically be provided with on the base with the cavity lifting support of install bin intercommunication, the upper portion of cavity lifting support is provided with the annular dryer rather than the intercommunication, be equipped with the wind channel in the annular dryer, the gaseous jet has been seted up on the annular dryer inside wall, the one end of annular dryer inner ring face towards the air exit is provided with annular anti-diffusion cover.
Furthermore, a rectifying mechanism is further arranged at a position, close to the air supply outlet, in the first outer shell, and the rectifying mechanism comprises a porous plate and a honeycomb rectifying plate which are sequentially arranged along the airflow direction.
Furthermore, four corners of the bottom surface of the base are provided with universal wheels.
Furthermore, the included angle between the axis of the air inlet of the exhaust hood and the vertical direction is 30-60 degrees.
Furthermore, the included angle between the axis of the tuyere of the annular diffusion-proof cover 35 and the horizontal direction is 0-60 degrees.
Furthermore, a smoke sensor is arranged on the installation box
The invention also discloses a method for the targeted long-distance multi-stage transportation of pollutants with adjustable airflow direction, which is realized by the system for the targeted long-distance multi-stage transportation of pollutants with adjustable airflow direction, and specifically comprises the following steps: and determining the number of the mobile relay air supply devices according to the distance between the remote air supply device and the air exhaust device, and then distributing the mobile relay air supply devices between the remote air supply device and the air exhaust device according to a preset distance.
Furthermore, the axis of the air port of the annular diffusion-proof cover is superposed with the axis of the air outlet.
Compared with the prior art, the invention has the advantages that:
(1) the system changes the conveying direction of air flow in the building through reasonable arrangement of component structures, particularly through arranging a single or a plurality of movable relay air supply devices with adjustable angles, achieves the effect of inducing the polluted air to flow to the discharge port and simultaneously reduces the attenuation rate of the air flow suction speed of the air exhaust device along with the distance, effectively shields the environmental wind such as the inward air flow of the building, avoids the escape of pollutants and achieves the effect of efficiently capturing the pollutants.
(2) The system of the invention reduces the diffusion of the air supply flow by arranging the rectification mechanism, particularly the rectification action of the honeycomb pore plate, and can solve the problem of short conveying distance caused by power dissipation in the pollutant conveying process.
(3) The method of the invention monitors the pollutant concentration in real time by arranging the smoke sensor, adjusts the rotating speed of the fan component according to the actual load by setting the distance, the angle and the number of the movable relay air supply devices, and finally moves the wind speed of the relay air supply devices, thereby saving energy.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic diagram of the overall architecture of the system of the present invention;
FIG. 2 is a schematic structural view of a mobile relay air supply device, wherein the arrow direction is the conveying direction of the polluted air flow;
fig. 3 is a schematic view of a partial structure of the mobile relay air supply device, wherein the direction of an arrow is the direction of air flow in the mobile relay air supply device;
FIG. 4 is a schematic view of the installation angle of the movable relay air supply device;
FIG. 5 is a schematic structural view of a fairing mechanism;
FIG. 6 is a cloud of the contaminated gas stream distribution of application example 1;
fig. 7 is a cloud view of the distribution of the velocity field of the polluted air flow of application example 1;
fig. 8 is a graph of a contaminated air stream transport trace of application example 1.
The reference numerals in the figures denote:
1-a remote air supply device, 2-an air exhaust device, 3-a mobile relay air supply device, 4-a rectification mechanism, 5-a smoke sensor, 11-a first outer shell, 21-an exhaust duct and 22-an exhaust hood; 31-a base, 32-an installation box, 33-a hollow lifting support, 34-an annular air duct and 35-an annular anti-diffusion cover; 41-porous plate, 42-honeycomb rectifying plate, 111-first air inlet, 112-air outlet; 311-universal wheel, 321-second air inlet, 341-gas jet.
Detailed Description
The following embodiments of the present invention are provided, and it should be noted that the present invention is not limited to the following embodiments, and all equivalent changes based on the technical solutions of the present invention are within the protection scope of the present invention.
It is to be noted that all the components in the present invention are commercially available components unless otherwise specified.
As used herein, the terms "upper," "lower," "front," "back," "top," "bottom," and the like are used in an orientation or positional relationship that is indicated for convenience in describing the invention and to simplify the description, but does not indicate or imply that the referenced devices or elements must be in a particular orientation, constructed and operative in a particular orientation, "inner" and "outer" refer to the inner and outer of the contours of the corresponding parts and are not to be construed as limiting the invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or imply that the number of technical features indicated is significant. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.
In the present invention, the terms "mounted," "connected," "fixed," and the like are used broadly, and may be, for example, fixedly connected, detachably connected, or integrated without being described to the contrary; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Example 1
According to the above technical solution, as shown in fig. 1 to 5, the present embodiment discloses a pollutant targeting long-distance multi-stage transportation system with adjustable airflow direction, which includes a long-distance air supply device 1 and an air exhaust device 2 arranged in a building, and further includes a mobile relay air supply device 3; in the present embodiment, the building includes a workshop, a factory building, and the like.
The remote air supply device 1 comprises a first outer shell 11 provided with an air supply cavity, a first air inlet 111 and an air supply outlet 112 which are communicated with the air supply cavity are respectively arranged at two ends of the first outer shell 11, and the first air inlet 111 is communicated with a main air inlet arranged at the lower part of a first side wall of a building; the air supply cavity is internally provided with an air supply blower, and under the action of the air supply blower, airflow entering the air supply cavity through the first air inlet 111 flows through the air supply cavity and then enters the interior of the building through the air supply outlet 112.
The air exhaust device 2 is arranged at the upper part of a second side wall of the building, and the second side wall of the building is arranged opposite to the first side wall of the building; each air exhaust device 2 corresponds to one or more movable relay air supply devices 3; the exhaust device 2 comprises an exhaust duct 21, and an exhaust hood 22 with an exhaust outlet facing downwards is connected to the exhaust duct 21; the air blowing direction of each moving relay air blower 3 is directed to the corresponding exhaust hood 22.
The remote air supply device 1 is used for conveying airflow into a building; the movable relay air supply device 3 is used for conveying the collected polluted airflow to the exhaust device 2; the exhaust device 2 is used to exhaust the captured polluted air flow out of the building.
In this embodiment, the remote air supply device 1 and the air exhaust device 2 are respectively disposed on a first side wall and a second side wall of a building opposite to each other, the moving relay air supply device 3 is disposed between the remote air supply device 1 and the air exhaust device 2, the pollution source is located between the remote air supply device 1 and the moving relay air supply device 3, the moving relay air supply device 3 is disposed between the pollution source and the air exhaust device 2, the uniform air flow delivered by the remote air supply device 1 passes through the pollution source and carries pollutants such as soot and the like emitted by the pollution source, which become polluted air flow, and then the polluted air flow is sucked and delivered by the moving relay air supply device 3, that is, the remote air supply device 1, the pollution source, the moving relay air supply device 3 and the air exhaust device 2 in this embodiment are sequentially disposed along the air flow delivery direction.
As a preferable scheme of this embodiment, the structure and working manner of the mobile relay air supply device 3 are similar to those of a bladeless fan, and include a base 31, wherein the base 31 is provided with an installation box 32, a fan assembly is arranged in the installation box 32, and the installation box 32 is further provided with a second air inlet 321; the base 31 is also vertically provided with a hollow lifting support 33 communicated with the installation box 32, the upper part of the hollow lifting support 33 is provided with an annular air duct 34 communicated with the hollow lifting support, an air duct is arranged in the annular air duct 34, a gas jet 341 is arranged on the inner side wall of the annular air duct 34, and an annular anti-diffusion cover 35 is arranged at one end of the inner annular surface of the annular air duct 34 facing the air outlet.
Ambient air in the building enters the installation box 32 through the second air inlet 321 under the action of the fan assembly, then enters the hollow lifting support 33 communicated with the installation box 32, enters the annular air duct 34 and is ejected out through the air ejection port 341, the direction of the ejected air flow is parallel to the axis of the air port of the mobile relay device 3, negative pressure is generated in the annular air duct 34 by the high-speed ejected air flow, polluted air flow near the annular air duct 34 is sucked into the annular air duct 34 and then is sent out through the annular anti-diffusion cover 35, and relay transmission of the polluted air flow is achieved.
Preferably, a conventional control unit for controlling the operation of the fan assembly is further arranged in the installation box, and the control unit is used for controlling the opening, closing and rotating speed of the fan assembly.
As a preferable mode of this embodiment, a rectifying mechanism 4 is further provided in the blowing cavity at a position close to the blowing port 112, and the rectifying mechanism 4 includes a porous plate 41 and a honeycomb rectifying plate 42 which are sequentially provided in the airflow direction. The sucked ambient air enters the air feeding cavity, is rectified by the relay rectifying mechanism 4 and then is discharged into the building. The change window has been seted up on the first shell body 11 of 4 tops of fairing, is provided with the detachable apron on changing the window, and the apron can be fixed on changing the window through the buckle, and sets up the handle on the upper surface of apron to change fairing.
In a preferred embodiment of the present invention, the universal wheels 311 are mounted at four corners of the bottom surface of the base 31. The operator can more flexibly arrange the movable relay air supply devices 3 according to the pollution source scattering point and the relative positions of the remote air supply devices 1 and the exhaust devices 2, the number of the relay air supply devices 3 can be multiple, and a plurality of relay air supply devices 3 facing the same exhaust hood 22 are arranged at one pollution source according to the requirement.
As a preferable scheme of this embodiment, an included angle between an axis of the air inlet of the exhaust hood and the vertical direction is 30 ° to 60 °.
As a preferable mode of this embodiment, as shown in fig. 5, an angle between the tuyere axis of the annular diffusion preventing cover 35 and the horizontal direction is 0 ° to 60 °. Because the universal wheels are arranged below the base, the mobile relay air supply device 3 can be moved at any position and adjusted at any angle, and preferably, when the mobile relay air supply device moves in the horizontal direction, the change angle of the air inlet axis of the second air inlet 321 is +/-45 degrees.
As a preferable solution of this embodiment, the installation box 32 is further provided with a smoke sensor 5.
The application process of this embodiment is as follows:
one or more main air inlets/main air outlets are respectively arranged on opposite side walls of buildings such as workshops and plants, then the installation of a remote air supply device 1 and an exhaust device 2 is completed, the position of a pollution source and the relative positions of the remote air supply device 1 and the exhaust device 2 are comprehensively considered, one or more mobile relay air supply devices 3 are selected, and when pollutants are emitted from the pollution source, a multistage remote pollutant conveying system is started, so that the pollutants are conveyed to a purifying device connected with the exhaust device 2 along with air flow and are discharged after purification.
Example 2
The embodiment discloses a method for targeted long-distance multi-stage transportation of pollutants with adjustable airflow direction, which is realized by the system for targeted long-distance multi-stage transportation of pollutants with adjustable airflow direction disclosed in embodiment 1, and specifically comprises the following steps: and determining the number of the mobile relay air supply devices according to the distance between the remote air supply device and the air exhaust device, and then distributing the mobile relay air supply devices between the remote air supply device and the air exhaust device according to a preset distance.
As a preferable scheme of this embodiment, when a moving relay air supply device is disposed between the remote air supply device and the air exhaust device, or a plurality of moving relay air supply devices are linearly arranged, an axis of an air inlet of the moving relay air supply device coincides with an axis of an air inlet of the air exhaust device, that is, an axis of an air inlet of the annular diffusion preventing cover 35 coincides with an axis of an air inlet of the air exhaust cover 22, so that an optimal conveying effect can be achieved.
Application example 1
To verify the feasibility and effectiveness of the present invention, computational fluidics simulations were performed using the system and method of the present invention, fig. 6-8, respectively.
As can be seen from fig. 6, the pollutants emitted from the pollution source, including dust and smoke, are diffused by the blowing air flow, but the diffusion height is very low and the direction is easy to turn, the pollutants move in the direction of the exhaust hood 22 after passing through the mobile relay air blower 3, and move to the vicinity of the exhaust hood 22 along with the air flow of the mobile relay air blower 3, and are sucked by the exhaust hood 22, the control effect of the pollutants is better, and the capture efficiency of the exhaust hood 22 is close to 100%.
As can be seen from fig. 7, the air flow speed sent by the remote air supply device 1 is low, the diffusion degree of the air supply jet flow is very low, the polluted air flow is pressed by the air supply jet flow after rising for a certain distance, and changes direction along with the air supply flow and deflects to the vicinity of the mobile relay air supply device 3, the air flow speed generated by the mobile relay air supply device 3 is high, the outlet air flow is uniformly distributed, the diffusion along the way is small, the kinetic energy is still kept after the jet flow moves for a long distance, and the conveying distance is long, so that the remote conveying of the polluted air flow can be ensured.
As can be seen from FIG. 8, the pollutant emitted from the pollutant source is directed to enter the exhaust hood 22 along the predetermined track under the control of the system of the present invention, thereby realizing the remote relay directional control of the pollutant and greatly improving the control effect of the pollutant
The preferred embodiments of the present disclosure are described in detail with reference to the accompanying drawings, however, the present disclosure is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solution of the present disclosure within the technical idea of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure.
It should be noted that, in the foregoing embodiments, various features described in the above embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, various combinations that are possible in the present disclosure are not described again.
In addition, any combination of the various embodiments of the present disclosure can be made, and the same should be considered as the inventive content of the present disclosure, as long as the combination does not depart from the spirit of the present disclosure.

Claims (9)

1. A pollutant targeting long-distance multi-stage transportation system with adjustable airflow direction comprises a long-distance air supply device (1) and an air exhaust device (2) which are arranged in a building, and is characterized by also comprising a mobile relay air supply device (3);
the remote air supply device (1) comprises a first outer shell (11) provided with an air supply cavity, a first air inlet (111) and an air supply outlet (112) communicated with the air supply cavity are respectively arranged at two ends of the first outer shell (11), the first air inlet (111) is communicated with a main air inlet arranged at the lower part of a first side wall of a building, and an air supply machine is arranged in the air supply cavity;
the air exhaust devices (2) are arranged at the upper part of a second side wall of the building, the second side wall of the building is arranged opposite to the first side wall of the building, and each air exhaust device (2) corresponds to one or more mobile relay air supply devices (3); the exhaust device (2) comprises an exhaust duct (21), and an exhaust hood (22) with an exhaust outlet facing downwards is connected to the exhaust duct (21);
the remote air supply device (1) is used for conveying airflow into a building; the movable relay air supply device (3) is used for conveying the collected polluted air flow to the air exhaust device (2); the exhaust device (2) is used for exhausting the captured polluted air flow out of the building.
2. The airflow direction adjustable pollutant targeted long-distance multistage transportation system as claimed in claim 1, wherein the mobile relay air supply device (3) comprises a base (31), an installation box (32) is arranged on the base (31), a fan assembly is arranged in the installation box (32), and a second air inlet (321) is further formed in the installation box (32); still vertically be provided with on base (31) with cavity lifting support (33) of install bin (32) intercommunication, the upper portion of cavity lifting support (33) is provided with rather than annular dryer (34) of intercommunication, be equipped with the wind channel in annular dryer (34), gas jet (341) have been seted up on annular dryer (34) inside wall, the one end of annular dryer (34) inner annular face towards the air exit is provided with annular diffusion cover (35).
3. The airflow direction adjustable pollutant targeted long-distance multi-stage conveying system according to claim 2, characterized in that a rectifying mechanism (4) is further arranged in the air supply cavity at a position close to the air supply outlet (112), and the rectifying mechanism (4) comprises a porous plate (41) and a honeycomb rectifying plate (42) which are sequentially arranged along the airflow direction.
4. The gas flow direction adjustable pollutant targeting long-distance multistage transportation system of claim 2, characterized in that universal wheels (311) are installed on four corners of the bottom surface of the base (31).
5. The airflow direction adjustable pollutant targeted long-distance multi-stage transportation system as claimed in claim 1, wherein the included angle between the tuyere axis of the exhaust hood and the vertical direction is 30-60 °.
6. The gas flow direction adjustable pollutant targeted long-distance multistage transportation system of claim 2, wherein the included angle between the tuyere axis of the annular diffusion-proof cover (35) and the horizontal direction is 0-60 °.
7. The system for targeted long-distance multi-stage transportation of pollutants with adjustable airflow direction as claimed in claim 2, wherein a smoke sensor (5) is further arranged on the mounting box (32).
8. The method for targeted long-distance multi-stage transportation of pollutants with adjustable airflow direction is realized by the system for targeted long-distance multi-stage transportation of pollutants with adjustable airflow direction as claimed in any one of claims 1 to 7, and specifically comprises the following steps: firstly, the number of the mobile relay air supply devices (3) is determined according to the distance between the remote air supply device (1) and the air exhaust device (2), and then the mobile relay air supply devices (3) are arranged between the remote air supply device (1) and the air exhaust device (2) according to the preset distance.
9. The method for targeted long-distance multi-stage transportation of pollutants with adjustable airflow direction according to claim 8, wherein the axis of the air outlet of the mobile relay air supply device (3) is overlapped with the axis of the air outlet of the exhaust device (2).
CN202210430205.8A 2022-04-22 2022-04-22 Airflow direction adjustable pollutant targeting long-distance multi-stage transportation system and method Pending CN114877454A (en)

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