CN112547336B - Fine water mist generation device based on high-speed air jet atomization - Google Patents
Fine water mist generation device based on high-speed air jet atomization Download PDFInfo
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- CN112547336B CN112547336B CN202011355875.5A CN202011355875A CN112547336B CN 112547336 B CN112547336 B CN 112547336B CN 202011355875 A CN202011355875 A CN 202011355875A CN 112547336 B CN112547336 B CN 112547336B
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- shell
- main shaft
- rectifying
- fan
- air inlet
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
- B05B7/02—Spray pistols; Apparatus for discharge
- B05B7/04—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge
- B05B7/0416—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge with arrangements for mixing one gas and one liquid
Abstract
The invention discloses a water mist generating device based on high-speed air jet atomization, which belongs to the field of water mist generating devices and comprises a shell, a main shaft, an air inlet system, an air compression system, a power system, a fan and a spray pipe, wherein the main shaft is connected with the air inlet system; the air compression system comprises a wheel shaft, a rectifying ring and an impeller set, an annular passage is formed between the wheel shaft and the shell, and the sectional area of the annular passage is gradually reduced from front to back; the impeller groups and the rectifying rings are arranged in the annular channel in a front-back alternate manner; the power system is fixed in the shell and drives the air compression system and the fan to rotate through the main shaft; a water inlet pipe is arranged between the power system and the fan, and the water outlet of the water inlet pipe faces the fan; the air inlet system and the spray pipe are respectively fixed at the front end and the rear end of the shell and are rotatably connected with the main shaft. The device does not need pressure storage equipment, and can adjust the amount of the generated water mist according to the requirement while generating high-speed jet air.
Description
Technical Field
The invention belongs to the field of water mist generating devices, and particularly relates to a water mist generating device based on high-speed air jet atomization.
Background
The traditional water mist is mainly characterized in that water flow is sprayed out from fine holes of a spray head at high speed by pressure, strong friction is generated between the water flow and surrounding air, jet flow is generated and broken, and mist drops with very small diameters are formed. The cooling effect is good, the surrounding oxygen is isolated, the heat radiation is reduced and other special fire extinguishing mechanisms are adopted, so that the cooling device is widely applied to fire fighting and rescue, and meanwhile, the cooling device can adsorb fine particles in air, has the functions of cooling and dedusting, and is also widely applied to urban environment treatment.
However, the existing water mist generating device has the following defects:
1. the working pressure is high, the working pressure of a low-pressure system is less than or equal to 1.21MPa, the working pressure of a medium-pressure system is more than 1.20MPa and less than 3.45MPa, and the working pressure of a high-pressure system is more than or equal to 3.45 MPa. This requires a pressure generating device, such as an air compressor, and a pressure storage tank, which have certain safety risks.
2. The system is high in cost, materials capable of bearing high-strength pressure are needed for a spray head, a pipeline, a pressure storage bottle and the like, and meanwhile, the maintenance cost is high.
3. The generated water mist is limited in quantity, and the coverage fire extinguishing range is small for large-area fire.
4. The mobility of the system is poor due to the large number of required auxiliary equipment.
Disclosure of Invention
The invention aims to provide a water mist generating device based on high-speed air jet atomization, which aims to solve the problems that the existing water mist generating device needs pressure storage, the water mist generation amount is small and the mobility is poor.
In order to realize the purpose of the invention, the technical scheme is as follows: a water mist generating device based on high-speed air jet atomization comprises a shell, a main shaft in the shell, and an air inlet system, an air compressing system, a power system, a fan and a spray pipe which are sequentially connected from front to back through the main shaft;
the air compression system comprises an axle, a plurality of rectifier rings and a plurality of impeller sets in a shell, an annular passage is formed between the axle and the shell, and the sectional area of the annular passage is gradually reduced from front to back; each impeller group comprises a plurality of blades which are arranged in a direction vertical to the main shaft, the plurality of blades are uniformly distributed in the circumferential direction and fixed on the wheel shaft, the plurality of impeller groups are sequentially fixed on the wheel shaft in a front-back distribution manner, the plurality of rectifying rings are sequentially fixed on the inner wall of the shell in a front-back distribution manner, and the impeller groups and the rectifying rings are alternately arranged in the annular channel in a front-back manner;
the power system is fixed in the shell and drives a wheel shaft of the front air compression system and a fan at the rear part to rotate through the main shaft; a water inlet pipe which can extend into the fan is arranged on the shell between the power system and the fan, and the water outlet of the water inlet pipe is vertical to the rotating surface of the fan;
the air inlet system and the spray pipe are respectively fixed at the front end and the rear end of the shell and are rotatably connected with the main shaft.
As a further alternative, the rectifying ring has a plurality of rectifying blades distributed circumferentially, and the number of the rectifying blades and the blades of the impeller set gradually increases from front to back, and the length of the blades gradually decreases from front to back.
As a further alternative, the air inlet system comprises an air inlet fairing, an air inlet fairing cone and an air inlet fairing support plate, wherein the air inlet fairing cone is fixed in the air inlet fairing through the air inlet fairing support plate; the air inlet duct fairing is fixedly connected with the shell, and the air inlet duct fairing cone is rotatably connected with the main shaft.
As a further alternative, the inner surface of the inlet cowling is streamlined and has an inner diameter that gradually increases from front to back.
As a further alternative, the fan includes a fan bracket and fan blades fixed to the fan bracket, and the fan bracket is fixed to the main shaft.
As a further alternative, the spray pipe comprises a spray pipe rectifying cone support plate, a spray pipe rectifying cone and a spray pipe outer cover, the spray pipe rectifying cone is fixed in the spray pipe outer cover through the spray pipe rectifying cone support plate, the spray pipe rectifying cone is rotatably connected to the rear end of the main shaft, and the spray pipe outer cover is fixed at the rear end of the shell.
As a further alternative, the nozzle fairing cone support plate is of a streamline structure.
As a further alternative, the inner diameter of the spray opening of the spray pipe is gradually reduced from front to back.
As a further alternative, the nozzle fairing cone support plates are circumferentially symmetrically arranged.
As a further alternative, a power system support plate is arranged between the power system and the shell, the power system is fixed on the shell through the power system support plate, and the power system is connected to the main shaft to provide rotary power for the main shaft.
The invention has the beneficial effects that:
1. the air compression system, the power system, the fan and the water inlet pipe are all integrated in a main pipe, namely a shell, the power system is used for generating high-pressure air and cutting water flow, and the efficiency is improved.
2. When the air compression system directly generates high-pressure air, the fan cuts the normal-pressure water flow into small liquid drops, the high-pressure air is mixed with the small liquid drops at the rear end of the pipeline to generate strong friction, and fine water mist is formed. The device does not need pressure storage equipment, and the amount of the generated water mist can be adjusted according to the requirement.
3. High-pressure gas is directly obtained in use, a high-pressure state does not need to be kept all the time, and cost is saved.
4. The device can be used for generating water mist, spraying foam and generating huge air quantity for smoke exhaust, and has wide application.
5. The size of the main pipe can be adjusted according to the requirement, and the water mist gun can be made into a small-size hand-held water mist gun and a large-size water mist gun.
6. The link of cutting water flow by the fan is utilized, so that the water mist does not need high air speed, and the utilization efficiency of the power system is improved.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, it should be understood that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic diagram of the internal structure of a water mist generating device based on high-speed air jet atomization, provided by an embodiment of the invention;
FIG. 2 is a cross-sectional view of the air intake system A-A of FIG. 1;
FIG. 3 is a cross-sectional view of the powertrain B-B of FIG. 1;
FIG. 4 is a cross-sectional view taken along line C-C of the inlet pipe of FIG. 1;
FIG. 5 is a cross-sectional view taken along line D-D of FIG. 1 at the nozzle;
FIG. 6 is a plan view of a vane and adjacent fairing vane in the compressor system;
reference numerals: 1-inlet duct cowling; 2-inlet duct fairing cone; 3, an air inlet passage rectifying support plate; 4-a rectifying ring; 5-impeller set; 6-wheel shaft; 7-a housing; 8-a main shaft; 9-a power system; 10-a powertrain support plate; 11-fan blades; 12-a fan bracket; 13-nozzle fairing cone support plate; 14-nozzle fairing cone; 15-nozzle housing; 16-water inlet pipe.
Detailed Description
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. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without any inventive step, are within the scope of the present invention. It is to be understood that the drawings are provided solely for the purposes of reference and illustration and are not intended as a definition of the limits of the invention. The connection relationships shown in the drawings are for clarity of description only and do not limit the manner of connection.
It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
The invention is further described with reference to the following figures and specific embodiments.
Fig. 1 to 6 show a water mist generating device based on high-speed air jet atomization, which comprises a housing 7, a main shaft 8 in the housing 7, and an air inlet system, an air compressing system, a power system 9, a fan and a spray pipe which are connected in sequence from front to back through the main shaft 8; the air compression system comprises an axle 6, a plurality of rectifying rings 4 and a plurality of impeller sets 5 in a shell 7, an annular passage is formed between the axle 6 and the shell 7, and the sectional area of the annular passage is gradually reduced from front to back; each impeller group 5 comprises a plurality of blades which are arranged in a direction vertical to the main shaft 8, the plurality of blades are uniformly distributed in the circumferential direction and are fixed on the wheel shaft 6, the plurality of impeller groups 5 are sequentially fixed on the wheel shaft 6 in a front-back distribution manner, the plurality of rectifying rings 4 are sequentially fixed on the inner wall of the shell 7 in a front-back distribution manner, and the impellers 5 and the rectifying rings 4 are alternately arranged in the annular channel in a front-back manner; the power system 9 is fixed in the shell 7 and drives the air compression system and the fan to rotate through the main shaft 8; a water inlet pipe 16 which can extend into the fan is arranged on the shell 7 between the power system 9 and the fan, and the water outlet of the water inlet pipe 16 is vertical to the rotating surface of the fan; the air inlet system and the spray pipe are respectively fixed at the front end and the rear end of the shell 7 and are rotatably connected with the main shaft 8.
The air inlet system comprises an air inlet fairing 1, an air inlet rectifying cone 2 and an air inlet rectifying support plate 3, wherein the air inlet rectifying cone 2 is fixed in the air inlet fairing 1 through the air inlet rectifying support plate 3; the air inlet duct fairing 1 is fixedly connected with the shell 7, and the air inlet duct fairing cone 2 is rotatably connected with the main shaft 8. The air inlet system can enable more air flows to smoothly enter the air compression system. The inner surface of the air inlet duct fairing 1 is streamline, and the inner diameter is gradually increased from front to back, so that air can smoothly flow into the air inlet duct.
The fairing rings 4 are also provided with a plurality of blades distributed circumferentially, the number of the blades of the fairing blades and the impeller set is gradually increased from front to back, and the length of the blades is gradually reduced from front to back. The impeller set 5 and the rectifying ring 4 of the air compression system are designed to enable air to pass through smoothly and compress stage by stage. The design of the annular channel and the axle 6 allows the air to be compressed step by step during the backward flow. The wheel shaft 6 can be in a frustum shape with a small front part and a big back part. The area of an annular passage at the tail part of the wheel shaft 6 (see figure 3) is greatly different from the area of the inner diameter of the rear outer shell 7 (see figure 4), so that a Venturi effect is formed, and high-pressure gas formed by the gas compression system is converted into high-speed gas and is sprayed backwards.
The power system 9 is used both for generating high pressure gas and for cutting the water flow. A power system support plate 10 is arranged between the power system 9 and the shell 7, the power system 9 is fixed on the shell 7 through the power system support plate 10, and the power system 9 is connected to the main shaft 8 to provide rotary power for the main shaft 8. The powertrain 9 may be an electric motor or an engine.
The fan comprises a fan bracket 12 and fan blades 11 fixed on the fan bracket 12, and the fan bracket 12 is fixed on the main shaft 8. The front end and the rear end of the fan bracket 12 are respectively connected with a power system 9 and a nozzle fairing cone 14 through a main shaft 8.
The spray tube includes spray tube fairing cone extension board 13, spray tube fairing cone 14, spray tube dustcoat 15, and spray tube fairing cone 14 passes through spray tube fairing cone extension board 13 to be fixed in spray tube dustcoat 15, and spray tube fairing cone 14 rotates to be connected in main shaft 8 rear end, and spray tube dustcoat 15 is fixed in shell 7 rear end. The nozzle fairing cone support plate 13 is of a streamline structure. The high-speed gas and the formed water mist can be radially sprayed out of the nozzle, the nozzle rectifying cone support plate 13 not only plays a role in fixing the rectifying cone and the shell 7, but also reduces the airflow resistance as small as possible due to the streamline design.
The inner diameter of the spray opening of the spray pipe is gradually reduced from front to back, so that the convergence type design can ensure that the water mist is sprayed out to the maximum extent and the resistance is reduced. The nozzle rectifying cone support plates 13 are circumferentially symmetrically arranged. The air inlet rectifying support plate 3, the power system support plate 10 and the water inlet pipe 16 can be circumferentially and symmetrically arranged.
The inlet cowling 1, the outer casing 7 and the nozzle housing 15 may be of one piece construction.
In operation, driving system 9 starts, drive shaft 6 and fan support 12 through main shaft 8 and rotate, high-speed rotatory compressor system inhales a large amount of air through the intake duct, compress step by step through the blade at different levels, terminal pressure reaches the biggest at compressor system, form high-pressure low-speed gas, because the pipeline internal diameter behind the compressor system sharply increases, according to the venturi effect, the high-pressure low-speed gas that forms can flow to the spray tube with certain high-speed state, ordinary pressure water passes through inlet tube 16 simultaneously and spouts to flabellum 11, high-speed rotatory flabellum 11 cuts into tiny liquid droplet with rivers and flows to the spray tube, high-speed air and tiny liquid droplet friction collision are located at the spray tube, cut apart into water droplet into thin water smoke, high-speed air carries thin water smoke and jets out from the spray tube afterbody.
The power of the power system 9 can be adjusted according to the requirement and is used for controlling the rotating speed of the main shaft 8; the number of the impeller groups 5 of the air compression system and the stage number of the air compression system can be adjusted according to requirements, and the number and the stage number of the impeller groups are used for controlling the compressed air with high pressure intensity required to be generated; the number of the water inlet pipes 16 can be adjusted according to the requirement.
The invention is not limited to the above alternative embodiments, and any other various forms of products can be obtained by anyone in the light of the present invention, but any changes in shape or structure thereof, which fall within the scope of the present invention as defined in the claims, fall within the scope of the present invention.
Claims (4)
1. A water mist generating device based on high-speed air jet atomization is characterized by comprising a shell, a main shaft in the shell, and an air inlet system, an air compression system, a power system, a fan and a spray pipe which are sequentially connected from front to back through the main shaft;
the air compression system comprises an axle, a plurality of rectifier rings and a plurality of impeller sets in a shell, an annular passage is formed between the axle and the shell, and the sectional area of the annular passage is gradually reduced from front to back; each impeller group comprises a plurality of blades which are arranged in a direction vertical to the main shaft, the plurality of blades are uniformly distributed in the circumferential direction and fixed on the wheel shaft, the plurality of impeller groups are sequentially fixed on the wheel shaft in a front-back distribution manner, the plurality of rectifying rings are sequentially fixed on the inner wall of the shell in a front-back distribution manner, and the impeller groups and the rectifying rings are alternately arranged in the annular channel in a front-back manner;
the power system is fixed in the shell and drives a wheel shaft of the front air compression system and a fan at the rear part to rotate through the main shaft; a water inlet pipe which can extend into the fan is arranged on the shell between the power system and the fan, and the water outlet of the water inlet pipe is vertical to the rotating surface of the fan;
the air inlet system and the spray pipe are respectively fixed at the front end and the rear end of the shell and are rotatably connected with the main shaft;
the air inlet system comprises an air inlet fairing, an air inlet rectifying cone and an air inlet rectifying support plate, wherein the air inlet rectifying cone is fixed in the air inlet fairing through the air inlet rectifying support plate; the air inlet passage fairing is fixedly connected with the shell, and the air inlet passage fairing cone is rotationally connected with the main shaft;
the fan comprises a fan bracket and fan blades fixed on the fan bracket, and the fan bracket is fixed on the main shaft;
the spray pipe comprises a spray pipe rectifying cone supporting plate, a spray pipe rectifying cone and a spray pipe outer cover, the spray pipe rectifying cone is fixed in the spray pipe outer cover through the spray pipe rectifying cone supporting plate, the spray pipe rectifying cone is rotatably connected to the rear end of the main shaft, and the spray pipe outer cover is fixed at the rear end of the shell;
a power system support plate is arranged between the power system and the shell, the power system is fixed on the shell through the power system support plate, and the power system is connected to the main shaft to provide rotary power for the main shaft; the nozzle fairing cone supporting plate is of a streamline structure, and the nozzle fairing cone supporting plate is symmetrically arranged in the circumferential direction.
2. The high-speed air jet atomization-based water mist generating device as claimed in claim 1, wherein the rectifying ring is provided with a plurality of circumferentially distributed rectifying blades, the number of the rectifying blades and the blades of the impeller set is gradually increased from front to back, and the length of the blades is gradually reduced from front to back.
3. The water mist generator based on high-speed air jet atomization of claim 1, wherein the inner surface of the inlet cowling is streamlined and gradually increases from front to back in inner diameter.
4. The high-speed air jet atomization-based water mist generator according to claim 1, wherein an inner diameter of an outlet of the nozzle is gradually reduced from front to back.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011355875.5A CN112547336B (en) | 2020-11-26 | 2020-11-26 | Fine water mist generation device based on high-speed air jet atomization |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011355875.5A CN112547336B (en) | 2020-11-26 | 2020-11-26 | Fine water mist generation device based on high-speed air jet atomization |
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| CN112547336A CN112547336A (en) | 2021-03-26 |
| CN112547336B true CN112547336B (en) | 2022-03-08 |
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| CN113252526A (en) * | 2021-05-10 | 2021-08-13 | 中国气象局上海物资管理处 | System and method for artificial rainfall and spray cleaning of visibility measurement test shelter |
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| GB2093373A (en) * | 1981-02-24 | 1982-09-02 | Avco Corp | Dual function nozzle for emergency oil/mist system |
| CN104958851A (en) * | 2015-06-05 | 2015-10-07 | 中国民用航空飞行学院 | Natural intake type foam generator |
| CN105665174A (en) * | 2016-04-05 | 2016-06-15 | 中国科学技术大学 | Axial flow induction type spraying device |
| CN205926072U (en) * | 2016-04-18 | 2017-02-08 | 昆明奥图环保设备股份有限公司 | Penetrate fog device |
| CN106593694A (en) * | 2016-12-23 | 2017-04-26 | 李可 | Radial turbofan jet engine |
| CN206454808U (en) * | 2017-01-11 | 2017-09-01 | 厦门大学嘉庚学院 | Bidirectional rotation gas-vapor mix atomizer |
| CN108252805A (en) * | 2018-01-29 | 2018-07-06 | 宋凡 | A kind of corrosion resistant turbine gas electricity generator of parent metal |
| CN108296042A (en) * | 2018-04-19 | 2018-07-20 | 陈永志 | A kind of spray nozzle of cleaning machine component |
| CN111188779A (en) * | 2020-01-08 | 2020-05-22 | 易利锋 | Gas compressor of gas turbine engine |
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2020
- 2020-11-26 CN CN202011355875.5A patent/CN112547336B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2093373A (en) * | 1981-02-24 | 1982-09-02 | Avco Corp | Dual function nozzle for emergency oil/mist system |
| CN104958851A (en) * | 2015-06-05 | 2015-10-07 | 中国民用航空飞行学院 | Natural intake type foam generator |
| CN105665174A (en) * | 2016-04-05 | 2016-06-15 | 中国科学技术大学 | Axial flow induction type spraying device |
| CN205926072U (en) * | 2016-04-18 | 2017-02-08 | 昆明奥图环保设备股份有限公司 | Penetrate fog device |
| CN106593694A (en) * | 2016-12-23 | 2017-04-26 | 李可 | Radial turbofan jet engine |
| CN206454808U (en) * | 2017-01-11 | 2017-09-01 | 厦门大学嘉庚学院 | Bidirectional rotation gas-vapor mix atomizer |
| CN108252805A (en) * | 2018-01-29 | 2018-07-06 | 宋凡 | A kind of corrosion resistant turbine gas electricity generator of parent metal |
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| CN111188779A (en) * | 2020-01-08 | 2020-05-22 | 易利锋 | Gas compressor of gas turbine engine |
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