CN113398786A - Jet flow mixing-increasing continuous control device based on wind speed sensor and working method - Google Patents
Jet flow mixing-increasing continuous control device based on wind speed sensor and working method Download PDFInfo
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- CN113398786A CN113398786A CN202110624708.4A CN202110624708A CN113398786A CN 113398786 A CN113398786 A CN 113398786A CN 202110624708 A CN202110624708 A CN 202110624708A CN 113398786 A CN113398786 A CN 113398786A
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Abstract
The invention provides a jet flow mixing-up continuous control device based on a wind speed sensor, which relates to the technical field of jet flow mixing-up devices and comprises a wind tunnel, a flexible film length adjusting device and a controller which are sequentially connected, wherein a pipeline wind speed transmitter is arranged on the wind tunnel, the flexible film length adjusting device comprises a base, a spiral guide rail is arranged on the base, one end of the spiral guide rail is connected with a stepping motor, a moving column is arranged on the spiral guide rail, a fixed hole is formed in the moving column, the upper end of the moving column is connected with a cavity, a flexible diaphragm is arranged in the cavity, one end of the flexible diaphragm is connected with a fixed column, two ends of the fixed column are fixed in the fixed hole in the moving column, a single chip microcomputer is arranged in the controller, and the single chip microcomputer is connected with the pipeline wind speed transmitter and the stepping motor. The invention drives the flexible film adjusting device to change the length-width ratio of the flexible film through the stepping motor system, thereby realizing the optimal mixing effect of jet flow.
Description
Technical Field
The invention relates to the technical field of jet flow mixing-increasing devices, in particular to a jet flow mixing-increasing continuous control device based on a wind speed sensor and a working method.
Background
Jet refers to a stream of fluid that is emitted from a nozzle, orifice, slit, or mechanically propelled and commingled with surrounding fluid. A shear layer exists at a jet flow outlet, the speed section state of the shear layer is unstable, a large amount of energetic vortexes can be generated, a large amount of large-scale sequence modeling structures exist in the area close to the outlet, the shear layer has an entrainment effect on jet flow, and the phenomenon of mixing with surrounding fluid occurs. In the process of the downstream development of the jet flow, the velocity gradient or the concentration gradient of the jet flow becomes steeper, the mixing process between fluid micro-clusters is accelerated, and therefore turbulent mixing in various scales in the jet flow field is achieved. Based on the jet flow control technology, the formation and development of the pseudo sequence structure in the jet flow shearing layer are controlled, and jet flow mixing enhancement is realized. Meanwhile, the jet flow active control and passive control technology is practically applied to industrial production, and the promotion of chemical reaction and the like can be realized by applying the technology. Furthermore, based on the jet flow control technology, an independently controlled high-efficiency low-pollution jet flow combustor, a high-efficiency mixer with different requirements and the like can be developed, and a controllable catalytic device for tail gas treatment can be developed.
Compared with the traditional jet mixing technology, the flexible diaphragm beating jet can improve the mixing performance under different working conditions by changing the size, the shape and the position of the flexible diaphragm. In addition, the flexible diaphragm slapping jet has smaller pressure loss than the traditional jet control technology in the jet flow mixing process.
However, in practical industrial application, the condition of working condition change generally exists, and the change of the working condition needs to be correspondingly adjusted to realize a better mixing effect. The traditional jet flow control technology can not obtain working condition information through the existing sensor and carry out corresponding adjustment, so that jet flow mixing is limited to a certain specific working condition. In summary, a jet flow mixing device capable of acquiring working condition information and adjusting correspondingly through a sensor is to be invented.
Disclosure of Invention
The invention provides a jet flow mixing-up continuous control device based on a wind speed sensor and a working method, and solves the problem that the existing jet flow mixing-up device cannot acquire working condition information through the existing sensor and perform corresponding adjustment.
In order to achieve the above purposes, the technical scheme adopted by the invention is as follows:
a jet flow mixing-up continuous control device based on a wind speed sensor comprises a wind tunnel, a flexible film length adjusting device and a controller which are sequentially connected, wherein a pipeline wind speed transmitter is arranged on the wind tunnel, the flexible film length adjusting device comprises a base, a spiral guide rail is arranged on the base, one end of the spiral guide rail is connected with a stepping motor, a moving column is arranged on the spiral guide rail, a fixing hole is formed in the moving column, the upper end of the moving column is connected with a cavity, sliding grooves are formed in two side walls of the cavity and horizontally opposite to the fixing hole, a flexible diaphragm is arranged in the cavity, one end of the flexible diaphragm protrudes out of the cavity (15), the other end of the flexible diaphragm is connected with a fixing column, the fixing column sequentially passes through the flexible diaphragm, the sliding grooves and the fixing hole from inside to outside, a single chip microcomputer is arranged in the controller, the single chip microcomputer is connected with the pipeline wind speed transmitter and the stepping motor.
Preferably, a nozzle is arranged at the output end of the wind tunnel and connected with a second air inlet of the flexible membrane length adjusting device through a clamping groove.
Preferably, the wind tunnel middle part is provided with the honeycomb section, pipeline wind speed transmitter sets up between honeycomb section and spout.
Preferably, the cavity and the stepping motor are arranged on two sides of the moving column.
Preferably, a fixing clip is arranged at the fixing column to clamp the flexible membrane.
Preferably, one end of the wind tunnel is provided with a first air inlet, and the first air inlet is connected with the fan.
Preferably, the flexible membrane sheet is a double layer FEP film.
A working method of a jet flow mixing-increasing continuous control device based on an air speed sensor is realized based on any one of the devices, and comprises the following steps:
the computer sends an intensity adjusting signal to the frequency converter, and the frequency converter receives the intensity adjusting signal and adjusts the voltage of the fan according to the intensity adjusting signal so that the fan generates jet flow;
the fan emits an emergent flow to the wind tunnel, and the emergent flow is ejected out through the nozzle;
the jet flow flows through the flexible diaphragm, so that the flexible diaphragm is flapped up and down;
the pipeline wind speed transmitter collects wind speed data and sends the collected wind speed data to the single chip microcomputer;
the singlechip processes the wind speed data and identifies the length of the flexible diaphragm required by the corresponding optimal mixing state;
the single chip microcomputer controls the rotation direction and speed of the stepping motor according to the length of the required flexible diaphragm;
the stepping motor rotates to drive the spiral guide rail to rotate, so that the base arranged on the spiral guide rail moves for a specific distance in a specific direction;
the movement of the base drives the moving column of the flexible membrane length adjusting device to move, so that the length of the flexible membrane is changed;
the length of the flexible diaphragm is changed to correspondingly change the length-width ratio of the flexible diaphragm, and the mixing effect is different when the length-width ratio of the flexible diaphragm is different, so that the mixing effect can be controlled.
The invention has the beneficial effects that:
the jet flow mixing automatic continuous control device is designed based on a flexible membrane flapping jet flow technology and combined with a pipeline wind speed transmitter, an Arduino single chip microcomputer, a stepping motor and the like, and is compliant with working condition changes. The flexible diaphragm beating and mixing part is simple in structure, convenient to install and maintain and low in cost in practical application, a series of problems existing in the practical application of the traditional jet mixing device are solved, and a good jet mixing effect can be still realized when the working condition changes;
the flexible diaphragm flapping jet flow technology adopted by the invention has the characteristics of obvious mixing increasing effect, strong controllability, small flow field energy loss, strong applicability, low cost and the like, and due to the dynamic instability of the flexible diaphragm, the flexible diaphragm can adversely affect jet flow when flapping in the jet flow, so that the jet flow generates a self-excited oscillation phenomenon, the mixing performance can be greatly enhanced, the excitation of external force is not needed, the parameters such as the length-width ratio of the flexible diaphragm and the like are easy to control, the corresponding adjustment can be carried out according to the working condition change, meanwhile, the flapping of the flexible diaphragm can not bring extra influence to the flow field, and the loss of the flow field energy in the flapping process is small;
compared with the traditional jet flow control device, the jet flow mixing-increasing continuous control device applies the innovative design concept, the power control part is separated from the jet flow mixing-increasing structure, the jet flow mixing-increasing structure is in a square tube shape, the power control part realizes the length adjustment of the flexible diaphragm through the linkage device outside the square tube, and the maintenance is convenient.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions of the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic view of the structure of the apparatus of the present invention.
Fig. 2 is a front view of the flexible film length adjustment apparatus of the present invention.
Fig. 3 is a perspective view of the flexible film length adjustment device of the present invention.
FIG. 4 is a top view of the flexible film length adjustment apparatus of the present invention.
FIG. 5 is a side view of the flexible film length adjustment device of the present invention.
FIG. 6 is a schematic diagram of a jet flow mixing-increasing continuous control system according to the present invention.
The reference numbers illustrate:
1. a flexible film length adjustment device; 2. a fan; 3. a wind tunnel; 4. a computer; 5. a frequency converter; 6. a controller; 7. a pipeline wind speed transmitter; 11. a base; 12. a helical guide rail; 13. a stepping motor; 14. moving the column; 15. a cavity; 16. a sliding groove; 17. a flexible membrane; 18. fixing a column; 19. a second air inlet; 110. fixing the clamping piece; 31. a spout; 32. a honeycomb section; 33. the first air inlet.
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
In the description of the present invention, it is to be understood that the orientation or positional relationship indicated by the directional terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc., are generally based on the orientation or positional relationship shown in the drawings, and are used for convenience of description and simplicity of description only, and in the absence of any contrary indication, these directional terms are not intended to indicate and imply that the device or element so referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore should not be considered as limiting the scope of the present invention: the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.
Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, and therefore, the scope of the present invention should not be construed as being limited.
The invention provides a technical scheme that: a jet flow mixing-up continuous control device based on a wind speed sensor is shown in figures 1-6 and comprises a wind tunnel 3, a flexible film length adjusting device 1 and a controller 6 which are connected in sequence. The fan 2 is connected with a first air inlet 33 of the wind tunnel 3, a nozzle 31 is arranged at the output end of the wind tunnel 3, the nozzle 31 is connected with a second air inlet 19 of the flexible film length adjusting device 1 through a clamping groove, a pipeline wind speed transmitter 7 is arranged on the wind tunnel 3, a honeycomb section 32 is arranged in the middle of the wind tunnel 3, and the pipeline wind speed transmitter 7 is arranged between the honeycomb section 32 and the nozzle 31. The flexible film length adjusting device 1 comprises a base 11, wherein a spiral guide rail 12 is arranged on the base 11, one end of the spiral guide rail 12 is connected with a stepping motor 13, a movable column 14 is arranged on the spiral guide rail 12, a fixed hole is formed in the movable column 14, the upper end of the movable column 14 is connected with a cavity 15, and the cavity 15 and the stepping motor 13 are arranged on two sides of the movable column 14. Two side walls of the cavity 15 are provided with sliding grooves 16, the sliding grooves 16 are horizontally opposite to the fixing holes, a flexible membrane 17 is arranged in the cavity 15, and the flexible membrane 17 is a double-layer FEP membrane. One end of the flexible diaphragm 17 protrudes out of the cavity 15, the other end of the flexible diaphragm is connected with a fixing column 18, a fixing clamping piece 110 is arranged at the position of the fixing column 18 and used for clamping the flexible diaphragm 17, the fixing column 18 sequentially passes through the flexible diaphragm 17, the sliding groove 16 and the fixing hole from inside to outside, a single chip microcomputer is arranged in the controller 6 and adopts Arduino, and the single chip microcomputer is connected with the pipeline air speed transmitter 7 and the stepping motor 13.
A working method of a jet flow mixing-increasing continuous control device based on a wind speed sensor comprises the following steps:
the computer 4 sends an intensity adjusting signal to the frequency converter 5, and the frequency converter 5 receives the intensity adjusting signal and adjusts the voltage of the fan 2 according to the intensity adjusting signal, so that the fan 2 generates jet flow;
the fan 2 emits jet flow to the wind tunnel 3, and the jet flow is ejected out through the nozzle 31;
the jet flow flows through the flexible diaphragm 17, so that the flexible diaphragm 17 is flapped up and down;
the pipeline wind speed transmitter can acquire smooth wind speed data in real time, the wind speed data can be matched with the corresponding optimal film length-width ratio, and the pipeline wind speed transmitter 7 acquires the wind speed data and sends the acquired wind speed data to the single chip microcomputer;
the singlechip processes the wind speed data and identifies the length of the flexible diaphragm 17 required by the corresponding optimal mixing state;
the single chip microcomputer controls the rotation direction and speed of the stepping motor 13 according to the required length of the flexible diaphragm 17;
the stepping motor 13 rotates to drive the spiral guide rail 12 to rotate, so that the base 11 arranged on the spiral guide rail 12 moves for a specific distance in a specific direction;
the movement of the base 11 drives the moving column 14 of the flexible membrane length adjusting device 1 to move, so that the length of the flexible membrane 17 is changed;
the length of the flexible membrane 17 is changed to correspondingly change the length-width ratio of the flexible membrane 17, and the mixing effect is different when the length-width ratio of the flexible membrane 17 is different, so that the mixing effect can be controlled.
The fan 2 may be any other jet generating device; the wind tunnel 3 can be a pipeline or other cavity body which can be provided with a jet flow continuous control device; the flexible film length control device 1 can be customized according to working conditions; the pipeline wind speed transmitter 7 can be other wind speed sensors; the controller 6 may be integrated into an existing equipment control box.
According to the invention, the jet mixing is obviously enhanced by beating the jet by the flexible diaphragm, the wind speed data is acquired by the wind speed sensor and is transmitted to the Arduino single chip microcomputer and the stepping motor is controlled, and the length-width ratio of the flexible diaphragm is changed by driving the flexible diaphragm adjusting device by the stepping motor system, so that the optimal mixing effect of the jet is realized. The jet flow mixing increasing continuous control which is in compliance with the working condition change is realized. The invention takes a common fan as an example for work introduction, and other similar jet flow generation and mixing processes are similar.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (8)
1. The utility model provides a efflux intensive mixing continuous control device based on wind speed sensor which characterized in that: the wind tunnel comprises a wind tunnel (3), a flexible film length adjusting device (1) and a controller (6) which are sequentially connected, wherein a pipeline wind speed transmitter (7) is arranged on the wind tunnel (3), the flexible film length adjusting device (1) comprises a base (11), a spiral guide rail (12) is arranged on the base (11), one end of the spiral guide rail (12) is connected with a stepping motor (13), a moving column (14) is arranged on the spiral guide rail (12), a fixed hole is arranged on the moving column (14), a cavity (15) is connected to the upper end of the moving column (14), sliding grooves (16) are arranged on two side walls of the cavity (15), the sliding grooves (16) are horizontally opposite to the fixed hole, a flexible membrane (17) is arranged in the cavity (15), one end of the flexible membrane (17) protrudes out of the cavity (15), and the other end of the flexible membrane (17) is connected with a fixed column (18), the fixed column (18) sequentially passes through the flexible diaphragm (17), the sliding groove (16) and the fixed hole from inside to outside, a single chip microcomputer is arranged in the controller (6), and the single chip microcomputer is connected with the pipeline air speed transmitter (7) and the stepping motor (13).
2. The jet flow intensive mixing continuous control device based on the wind speed sensor according to claim 1, characterized in that: and a nozzle (31) is arranged at the output end of the wind tunnel (3), and the nozzle (31) is connected with a second air inlet (19) of the flexible membrane length adjusting device (1) through a clamping groove.
3. The jet flow intensive mixing continuous control device based on the wind speed sensor according to claim 2, characterized in that: the wind tunnel (3) middle part is provided with honeycomb section (32), pipeline wind speed changer (7) set up between honeycomb section (32) and spout (31).
4. The jet flow intensive mixing continuous control device based on the wind speed sensor according to claim 1, characterized in that: the cavity (15) and the stepping motor (13) are arranged on two sides of the moving column (14).
5. The jet flow intensive mixing continuous control device based on the wind speed sensor according to claim 1, characterized in that: and a fixed clamping piece (110) is arranged at the fixed column (18) and used for clamping the flexible membrane (17).
6. The jet flow intensive mixing continuous control device based on the wind speed sensor according to claim 1, characterized in that: one end of the wind tunnel is provided with a first air inlet (33), and the first air inlet (33) is connected with the fan (2).
7. The jet flow intensive mixing continuous control device based on the wind speed sensor according to claim 1, characterized in that: the flexible membrane (17) is a double-layer FEP membrane.
8. An operating method of a jet flow mixing continuous control device based on a wind speed sensor is realized based on the device of any one of claims 1 to 7, and is characterized by comprising the following steps:
the computer (4) sends an intensity adjusting signal to the frequency converter (5), and the frequency converter (5) receives the intensity adjusting signal and adjusts the voltage of the fan (2) according to the intensity adjusting signal so that the fan (2) generates jet flow;
the fan (2) sends jet flow to the wind tunnel (3), and the jet flow is sprayed out through the nozzle (31);
the jet flow flows through the flexible diaphragm (17) to enable the flexible diaphragm (17) to flap up and down;
the pipeline wind speed transmitter (7) collects wind speed data and sends the collected wind speed data to the single chip microcomputer;
the singlechip processes the wind speed data and identifies the length of the flexible diaphragm (17) required by the corresponding optimal mixing state;
the single chip microcomputer controls the rotation direction and speed of the stepping motor (13) according to the length of the required flexible diaphragm (17);
the stepping motor (13) rotates to drive the spiral guide rail (12) to rotate, so that the base (11) arranged on the spiral guide rail (12) moves for a specific distance in a specific direction;
the movement of the base (11) drives the moving column (14) of the flexible membrane length adjusting device (1) to move, so that the length of the flexible membrane (17) is changed;
the length of the flexible membrane (17) is changed to correspondingly change the length-width ratio of the flexible membrane (17), and the mixing effect is controlled due to the fact that the mixing effect is different when the length-width ratio of the flexible membrane (17) is different.
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| CN202110624708.4A CN113398786A (en) | 2021-06-04 | 2021-06-04 | Jet flow mixing-increasing continuous control device based on wind speed sensor and working method |
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| CN202110624708.4A CN113398786A (en) | 2021-06-04 | 2021-06-04 | Jet flow mixing-increasing continuous control device based on wind speed sensor and working method |
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