CN105298594A - Smoke discharging and flow jetting device - Google Patents
Smoke discharging and flow jetting device Download PDFInfo
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- CN105298594A CN105298594A CN201510810369.3A CN201510810369A CN105298594A CN 105298594 A CN105298594 A CN 105298594A CN 201510810369 A CN201510810369 A CN 201510810369A CN 105298594 A CN105298594 A CN 105298594A
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- fluidic device
- smoke evacuation
- fixed
- blower fan
- housing
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Abstract
The invention discloses a smoke discharging and flow jetting device. The smoke discharging and flow jetting device comprises a draught fan, a shell, an outer spray nozzle, a smoke discharging pipeline, a central spray nozzle and a mixing pipe. The draught fan is fixed to the first side face of the shell. The outer spray nozzle is fixed to the inner portion of the shell, wherein the large-diameter end is fixed to the inner portion of the first side face and communicated with the draught fan to form a flow jetting air passageway, and the small-diameter end is fixed to the inner portion of the second side face of the shell to be communicated with the mixing pipe. One end of the smoke discharging pipeline extends out of the shell, and the other end of the smoke discharging pipeline extends into the outer spray nozzle, is fixed to the inner portion of the second side face, forms an air passageway together with the outer spray nozzle and is communicated with the mixing pipe. The central spray nozzle is fixed to the inner portion of the smoke discharging pipeline, one end of the central spray nozzle extends out of the smoke discharging pipeline to be communicated with the jetting air passageway, and the other end of the central spray nozzle is communicated with the mixing pipe. The first end of the mixing pipe is fixed to the second side face, wherein the diameter of the opening of the first end is larger than the diameter of the small-diameter end of the outer spray nozzle. By means of the smoke discharging and flow jetting device, the multi-channel design is achieved, the excellent pneumatic characteristic is provided, vortexes internally formed are reduced, a good flow jetting effect is achieved, and the service life is prolonged.
Description
Technical field
The present invention relates to fume emission and control applied technical field, be specifically related to a kind of smoke evacuation fluidic device.
Background technique
Ocean platform carries out drilling, storage, conveying and personnel for offshore oil to live comprehensive marine engineering equipment, is the operational base implementing sea-bottom oil-gas exploration and exploitation.
Fixed and mobile platform can be divided into according to structural characteristics and working state.Semi-submersible offshore platform, with features such as extremely strong capacity of anti-storm, excellent exercise performance, huge floor space and struck capacities, efficiently operating efficiency, in deep-sea oil exploitation, develops into the mobile platform of world gradually.Diesel generating set ensures that ocean platform runs well " heart ", for drilling equipment electricity consumption each on ocean platform and emergence power provide power supply.
Under the diesel generating set of semi-submersible offshore platform is generally all arranged in Main deck, location comparison is low, working platform and accommodation platform are general all very high, platform is provided with tall and big boring tower, Hoisting Machinery and other machinery, diesel smoke pipe is difficult to the upper strata area of space being arranged in platform.In order to not increase exhaust back pressure and not affect the work of drilling machinery, smoke-ejecting pipe is generally arranged in lower position nearby.Under extra large wind action, work can be blown to by sea wind compared with the flue gas of low speed and living area pollutes.The Emissions be gathered on platform comprises the cardio-pulmonary function that nitrogen oxide, sulphide, carbon monoxide, hydrocarbon and particle etc. can damage people strongly, the work of serious harm platform producers and life.Therefore, the diesel exhaust gas of semi-submersible offshore platform must suitably process before entering air.
At present, domestic and international treatment of diesel exhaust technology mainly contains waste gas cleaning, spray smoke abatement, selective catalysis etc.Although these technology can high efficiency purifying exhaust gas, solve the problem of exhaust pollution platform air, its volume is large, involve great expense, operating cost is high, very large cost will be caused to drop into ocean platform.Exhaust jet stream technology is thus arisen at the historic moment, and its principle is: by injecting a large amount of high-speed air at Diesel Engine Exhaust Pipe end, relies on the mutual collision of air and flue gas and mixing to realize the exchange of energy.After fluidic device:
A) accelerate the mixing of air and flue gas, dilution flue gas, reduces contaminant concentration;
B) improve flue gas flow rate, make fume emission arrive region further from platform;
C) reduce outlet pipe end back pressure, be conducive to flue gas and discharge smoothly, reduce engine fuel consumption;
D) the Wind-Pressure Resistance fluctuation ability of smoke exhaust port is improved.
Exhaust jet stream device has that volume is little, mounting arrangements simple and flexible, manufacture, operation and maintenance low cost and other advantages, and it is installed, runs and substantially can not cause negative effect to diesel engine and other subsidiary engine equipment, therefore, it is not only applicable to newly make platform, and is easy to install additional at transformation platform.There is adaptability widely.
But be also only just applied in treatment of diesel exhaust field in recent years due to fluidics, still there is the defects such as exhaust jet stream device context easily forms vortes interference jet effect, product falls short of working life in exhaust jet stream device in the market.
Summary of the invention
In view of above-mentioned defect of the prior art or deficiency, expect to provide the smoke evacuation fluidic device that a kind of jet effect is better, working life is longer.
The invention provides a kind of smoke evacuation fluidic device, described device comprises blower fan, housing, outer nozzle, gas exhaust duct, central nozzle and mixing tube;
Described blower fan is fixed on the first side of described housing;
Described outer nozzle is fixed in described housing, and bigger diameter end is fixed in described first side, is communicated with forms jet air runner with described blower fan, and miner diameter end is fixed in the second side of described housing, is communicated with described mixing tube;
Described housing is stretched out in described gas exhaust duct one end, and the other end stretches into described outer nozzle, is fixed in described second side, forms air flow channel with described outer nozzle, be communicated with described mixing tube;
Described central nozzle is fixed in described gas exhaust duct, and described gas exhaust duct and described jet air flow passage are stretched out in one end, and the other end is communicated with described mixing tube;
Described mixing tube first end is fixed on described second side, and the port diameter of described first end is greater than the diameter of the miner diameter end of described outer nozzle.
The smoke evacuation fluidic device that the many embodiments of the present invention provide is by structural Optimal improvements such as outer nozzle, gas exhaust duct, central nozzles, achieve multiple flow passages design, provide excellent aerodynamic characteristic, decrease the whirlpool formed in smoke evacuation fluidic device, achieve good jet effect;
The smoke evacuation fluidic device that some embodiments of the invention provide provides complete protective measure by arranging the equipment such as air feed shutter case, check valve, temperature transducer to blower fan;
The smoke evacuation fluidic device that some embodiments of the invention provide by arranging stormproof louvre case on shell, set up the air passageways that shell and outer nozzle are formed, the friction that the internal face reducing the direct impingement mix pipe of air-flow that outer nozzle exports causes, reduces the working life extending mixing tube while forming the probability of whirlpool;
The multi-joint smoke evacuation fluidic device that some embodiments of the invention provide, by multiple smoke evacuation fluidic device in parallel, significantly improves gas treatment ability.
Accompanying drawing explanation
By reading the detailed description done non-limiting example done with reference to the following drawings, the other features, objects and advantages of the application will become more obvious:
The structural representation of the smoke evacuation fluidic device that Fig. 1 provides for one embodiment of the invention.
The schematic appearance of the smoke evacuation fluidic device that Fig. 2 provides for one embodiment of the invention.
The schematic appearance of the duplex smoke evacuation fluidic device that Fig. 3 provides for one embodiment of the present invention.
Description of reference numerals:
1 air feed shutter case
2 blower fans
3 housings
4 outer nozzles
5 flow guiding bend pipes
6 external support boards
7 inner support plates
8 smoke removal conduits
9 central nozzles
10 mixing tubes
11 stators
12 flanges
Embodiment
Below in conjunction with drawings and Examples, the application is described in further detail.Be understandable that, specific embodiment described herein is only for explaining related invention, but not the restriction to this invention.It also should be noted that, for convenience of description, illustrate only in accompanying drawing and invent relevant part.
It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.Below with reference to the accompanying drawings and describe the application in detail in conjunction with the embodiments.
The structural representation of the smoke evacuation fluidic device that Fig. 1 provides for one embodiment of the invention.Fig. 2 is the schematic appearance of described smoke evacuation fluidic device.
As depicted in figs. 1 and 2, in the present embodiment, smoke evacuation fluidic device provided by the present invention comprises: blower fan 2, housing 3, outer nozzle 4, gas exhaust duct, central nozzle 9 and mixing tube 10.
Wherein: blower fan 2 is fixed on the first side of housing 3;
Outer nozzle 4 is fixed in housing 3, and bigger diameter end is fixed in described first side, is communicated with forms jet air runner with blower fan 2, and miner diameter end is fixed in the second side of housing 3, is communicated with mixing tube 10;
Housing 3 is stretched out in described gas exhaust duct one end, and the other end stretches into outer nozzle 4, is fixed in described second side, forms air flow channel with outer nozzle 4, be communicated with mixing tube 10;
Central nozzle 9 is fixed in described gas exhaust duct, and described gas exhaust duct and described jet air flow passage are stretched out in one end, and the other end is communicated with mixing tube 10;
Mixing tube 10 first end is fixed on described second side, and the port diameter of described first end is greater than the diameter of the miner diameter end of outer nozzle 4.
Particularly, in the present embodiment, the outlet diameter of central nozzle 9 is 0.2 times of gas exhaust duct diameter, and the nozzle convergence angle of central nozzle 9 is 5 °; Outer nozzle 4 is reducing pipe, and converging angles is 5 °; Described gas exhaust duct stretches into outer nozzle 4 place and outer nozzle 4 is tightly connected.Be tightly connected between each position, ensure that between each runner without gas leakage.In more embodiments, according to different actual demands, the outlet diameter of central nozzle 9 can be set to 0.1 times ~ 0.3 times of gas exhaust duct diameter, and the range intervals that arranges of nozzle convergence angle is 2 ° ~ 5 °; The range intervals that arranges of the converging angles of outer nozzle 4 is 2 ° ~ 5 °; Described gas exhaust duct stretches into outer nozzle 4 place can adopt other modes that are tightly connected such as welding, has same technique effect.
In a preferred embodiment, described gas exhaust duct comprises flow guiding bend pipe 5, smoke removal conduit 8 and flange 12.
Housing 3 is stretched out in flow guiding bend pipe 5 one end, and the other end stretches into outer nozzle 4, is connected with one end of smoke removal conduit 8, forms flue gas flow channel; The other end of smoke removal conduit 8 is fixed in described second side.Flange 12 is arranged on the port that flow guiding bend pipe 5 stretches out housing.
Particularly, in the present embodiment, smoke removal conduit 8 is increaser, and diffusion angle is 0.5 °, and in more embodiments, according to the actual requirements, when smoke removal conduit 8 adopts increaser, the range intervals that arranges of the diffusion angle of smoke removal conduit 8 is 0.4 ° ~ 1 °; According to different demands, smoke removal conduit 8 also can adopt the difform conduits such as straight tube.
In a preferred embodiment, central nozzle 9 is fixed in smoke removal conduit 8 by inner support plate 7.
In a preferred embodiment, mixing tube 10 comprises the converging transition, straight length and the gradually expanding section that connect successively, and described converging transition is fixedly connected with shell 3.
Particularly, in the present embodiment, the angle of throat of described converging transition is 30 °, and the diameter of described straight length is 1.5 times of the diameter of smoke removal conduit 8, and the angle of flare of described gradually expanding section is 15 °.In more embodiments, according to different actual demands, the range intervals that arranges of the angle of throat of described converging transition is 20 ° ~ 45 °, and the diameter of described straight length can be set to 1.2 times ~ 1.5 times of the diameter of smoke removal conduit 8, and the range intervals that arranges of the angle of flare of described gradually expanding section is 5 ° ~ 15 °.Described converging transition is connected with shell 3 bolt.
In a preferred embodiment, stator 11 is installed in described gradually expanding section, for reclaiming the static pressure of mixed gas.
Particularly, in the present embodiment, the blade quantity of stator 11 is 15.In more embodiments, according to different actual demands, it is 9 ~ 17 that the blade quantity of stator 11 arranges range intervals.
In a preferred embodiment, the miner diameter end of outer nozzle 4 is fixed in housing 3 by external support board 6.
Particularly, each parts being arranged in shell 3 or stretch into shell 3 are tightly connected each other; Further, in a preferred embodiment, each parts being arranged in shell 3 or stretch into shell 3 are welded to connect each other.
In some preferred embodiments, described smoke evacuation fluidic device also can comprise following at least one item:
Air feed shutter case 1, is arranged on the inlet of blower fan 2, for the protection of the import of blower fan 2;
Check valve, is arranged on the outlet port of blower fan 2, for preventing flue gas reverse outlet being blown into blower fan 2 when blower fan 2 quits work;
Temperature transducer, is arranged on the outlet port of blower fan 2, for detected temperatures, thus starts blower fan 2 when reverse high-temperature flue gas blows.
Above-described embodiment provides complete protective measure by arranging the equipment such as air feed shutter case 1, check valve, temperature transducer to blower fan 2, thus improves the working life of smoke evacuation fluidic device.
In some preferred embodiments, shell 3 also comprises following at least one item:
Stormproof louvre case, is arranged on shell 3, sucks in mixing tube 10 for the passage making a small amount of air be formed along shell 3 and outer nozzle 4, the friction that the internal face reducing the direct impingement mix pipe 10 of air-flow that outer nozzle 4 exports causes;
Escape orifice, is arranged on lowest part bottom shell 3, for discharging the liquid of shell 3 inner accumulation.
Above-described embodiment by arranging stormproof louvre case on shell, set up the air passageways that shell and outer nozzle are formed, the friction that the internal face reducing the direct impingement mix pipe of air-flow that outer nozzle exports causes, reduces the working life extending mixing tube while forming the probability of whirlpool.
The schematic appearance of the duplex smoke evacuation fluidic device that Fig. 3 provides for one embodiment of the present invention.
As shown in Figure 3, in a preferred embodiment, two described smoke evacuation fluidic devices in parallel share a housing 3, forms a duplex and to discharge fume fluidic device.In more embodiment, the smoke evacuation fluidic device of multiple parallel connection can be set as required, form multi-joint smoke evacuation fluidic device.
Above-described embodiment, by multiple smoke evacuation fluidic device in parallel, significantly improves gas treatment ability.
In a preferred embodiment, described smoke evacuation fluidic device comprises the air feed shutter case 1 of the inlet being arranged on described blower fan, and the smoke evacuation fluidic device of described parallel connection shares an air feed shutter case 1.
The smoke evacuation fluidic device that above-mentioned many embodiments provide, by structural Optimal improvements, achieves multiple flow passages design, provides excellent aerodynamic characteristic, decreases the whirlpool formed in smoke evacuation fluidic device, achieves good jet effect:
By CFD simulation software, be 600mm to smoke-ejecting pipe diameter, exhaust smoke level is that the diesel exhaust gas of 18500kg/s carries out simulation calculation, be under the design conditions of 44400kg/s in jet air amount, the speed of jet air in outer nozzle 4 and central nozzle 9 outlet port is apparently higher than the flow velocity of smoke removal conduit 8 outlet port flue gas, define free jet, the negative pressure of about 200Pa is defined in mixing tube 10 ingress, reduce the back pressure in smoke removal conduit 8 outlet port, diesel smoke is enable to enter mixing tube 10 more smoothly, jet air and flue gas form mixing layer at surface of contact, mixing layer is gradually to tube wall and the center region development of mixing tube 10.In mixing tube 10, air and flue gas mix gradually, and energy constantly exchanges, and velocity of flue gas and pressure get a promotion, and the mean velocity in mixing tube 10 outlet port brings up to 41m/s by 38m/s, and middle pressure brings up to about 150Pa by 0Pa.Do not form obvious eddy current in smoke evacuation fluidic device, flowing state is good.
From simulated effect, smoke evacuation fluidic device provided by the invention has excellent aerodynamic characteristic, and jet effect has reached the level of same kind of products at abroad, can meet the every technical requirements of user to fluidic device.
More than describe and be only the preferred embodiment of the application and the explanation to institute's application technology principle.Those skilled in the art are to be understood that, invention scope involved in the application, be not limited to the technological scheme of the particular combination of above-mentioned technical characteristics, also should be encompassed in when not departing from described inventive concept, other technological scheme of being carried out combination in any by above-mentioned technical characteristics or its equivalent feature and being formed simultaneously.The technical characteristics that such as, disclosed in above-mentioned feature and the application (but being not limited to) has similar functions is replaced mutually and the technological scheme formed.
Claims (10)
1. a smoke evacuation fluidic device, is characterized in that, described device comprises blower fan, housing, outer nozzle, gas exhaust duct, central nozzle and mixing tube;
Described blower fan is fixed on the first side of described housing;
Described outer nozzle is fixed in described housing, and bigger diameter end is fixed in described first side, is communicated with forms jet air runner with described blower fan, and miner diameter end is fixed in the second side of described housing, is communicated with described mixing tube;
Described housing is stretched out in described gas exhaust duct one end, and the other end stretches into described outer nozzle, is fixed in described second side, forms air flow channel with described outer nozzle, be communicated with described mixing tube;
Described central nozzle is fixed in described gas exhaust duct, and described gas exhaust duct and described jet air flow passage are stretched out in one end, and the other end is communicated with described mixing tube;
Described mixing tube first end is fixed on described second side, and the port diameter of described first end is greater than the diameter of the miner diameter end of described outer nozzle.
2. smoke evacuation fluidic device according to claim 1, is characterized in that, described gas exhaust duct comprises flow guiding bend pipe, smoke removal conduit and flange;
Described housing is stretched out in described flow guiding bend pipe one end, and the other end stretches into described outer nozzle, is connected with one end of described smoke removal conduit, forms flue gas flow channel; The other end of described smoke removal conduit is fixed in described second side; Described flange is arranged on the port that described flow guiding bend pipe stretches out housing.
3. smoke evacuation fluidic device according to claim 2, is characterized in that, described central nozzle is fixed in described smoke removal conduit by inner support plate.
4. smoke evacuation fluidic device according to claim 1, is characterized in that, described mixing tube comprises the converging transition, straight length and the gradually expanding section that connect successively, and described converging transition is fixedly connected with described shell.
5. smoke evacuation fluidic device according to claim 4, is characterized in that, is provided with stator in described gradually expanding section, for reclaiming the static pressure of mixed gas.
6. smoke evacuation fluidic device according to claim 1, is characterized in that, the miner diameter end of described outer nozzle is fixed in described housing by external support board.
7. smoke evacuation fluidic device according to claim 1, is characterized in that, also comprises following at least one item:
Air feed shutter case, is arranged on the inlet of described blower fan, for the protection of the import of described blower fan;
Check valve, is arranged on the outlet port of described blower fan, for preventing flue gas reverse outlet being blown into blower fan when described blower fan quits work;
Temperature transducer, is arranged on the outlet port of described blower fan, for detected temperatures, thus starts described blower fan when reverse high-temperature flue gas blows.
8. smoke evacuation fluidic device according to claim 1, is characterized in that, described shell also comprises following at least one item:
Stormproof louvre case, arranges on the housing, sucks in described mixing tube for the passage making a small amount of air be formed along described shell and described outer nozzle, the friction that the internal face that the air-flow reducing the output of described outer nozzle directly impacts described mixing tube causes;
Escape orifice, is arranged on described outer casing bottom lowest part, for discharging the liquid of described enclosure accumulation.
9. the multi-joint smoke evacuation fluidic device of fluidic device of discharging fume according to claim 1-8 composition, is characterized in that, comprises at least two described smoke evacuation fluidic devices in parallel, and the smoke evacuation fluidic device of described parallel connection shares a described housing.
10. multi-joint smoke evacuation fluidic device according to claim 9, is characterized in that, described smoke evacuation fluidic device comprises the air feed shutter case of the inlet being arranged on described blower fan, and the smoke evacuation fluidic device of described parallel connection shares an air feed shutter case.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510810369.3A CN105298594B (en) | 2015-11-20 | 2015-11-20 | Smoke evacuation fluidic device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510810369.3A CN105298594B (en) | 2015-11-20 | 2015-11-20 | Smoke evacuation fluidic device |
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| Publication Number | Publication Date |
|---|---|
| CN105298594A true CN105298594A (en) | 2016-02-03 |
| CN105298594B CN105298594B (en) | 2017-11-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510810369.3A Active CN105298594B (en) | 2015-11-20 | 2015-11-20 | Smoke evacuation fluidic device |
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| CN (1) | CN105298594B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109356888A (en) * | 2018-11-05 | 2019-02-19 | 中国船舶重工集团公司第七〇九研究所 | A kind of jet pump |
| CN113202825A (en) * | 2021-04-25 | 2021-08-03 | 连云港正航电力节能技术有限公司 | Steam jet air extractor |
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| CN87216470U (en) * | 1987-12-23 | 1988-09-21 | 王国库 | Smoke pump |
| KR0149076B1 (en) * | 1995-12-22 | 1998-11-02 | 김태구 | A drop bent device for vehicle indoor using sonic nozzle jet pump |
| CN2386352Y (en) * | 1999-06-09 | 2000-07-05 | 唐长华 | Injection cooker hood |
| JP2005028200A (en) * | 2003-07-07 | 2005-02-03 | Suguro Tekko:Kk | Force feed type dust collector |
| CN201032158Y (en) * | 2007-01-26 | 2008-03-05 | 李德生 | Highly effective energy-saving ventilation device |
| CN201173146Y (en) * | 2007-12-13 | 2008-12-31 | 范良凯 | Smoke discharging infrared inhibition device |
| CN103453545A (en) * | 2012-06-05 | 2013-12-18 | 孙长杰 | Smoke exhaust barrel with jet technology for hot-blast stove |
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2015
- 2015-11-20 CN CN201510810369.3A patent/CN105298594B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87216470U (en) * | 1987-12-23 | 1988-09-21 | 王国库 | Smoke pump |
| KR0149076B1 (en) * | 1995-12-22 | 1998-11-02 | 김태구 | A drop bent device for vehicle indoor using sonic nozzle jet pump |
| CN2386352Y (en) * | 1999-06-09 | 2000-07-05 | 唐长华 | Injection cooker hood |
| JP2005028200A (en) * | 2003-07-07 | 2005-02-03 | Suguro Tekko:Kk | Force feed type dust collector |
| CN201032158Y (en) * | 2007-01-26 | 2008-03-05 | 李德生 | Highly effective energy-saving ventilation device |
| CN201173146Y (en) * | 2007-12-13 | 2008-12-31 | 范良凯 | Smoke discharging infrared inhibition device |
| CN103453545A (en) * | 2012-06-05 | 2013-12-18 | 孙长杰 | Smoke exhaust barrel with jet technology for hot-blast stove |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109356888A (en) * | 2018-11-05 | 2019-02-19 | 中国船舶重工集团公司第七〇九研究所 | A kind of jet pump |
| CN109356888B (en) * | 2018-11-05 | 2023-09-15 | 中国船舶重工集团公司第七一九研究所 | Jet pump |
| CN113202825A (en) * | 2021-04-25 | 2021-08-03 | 连云港正航电力节能技术有限公司 | Steam jet air extractor |
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| Publication number | Publication date |
|---|---|
| CN105298594B (en) | 2017-11-21 |
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Address after: 201108 Shanghai city Minhang District Huaning Road No. 3111 Patentee after: The 711 Research Institute of China Shipbuilding Corp. Address before: 201108 Shanghai city Minhang District Huaning Road No. 3111 Patentee before: Shanghai Marine Diesel Engine Research Institute |