CN109237693B - Workshop airflow induction and harmful gas purification method - Google Patents
Workshop airflow induction and harmful gas purification method Download PDFInfo
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- CN109237693B CN109237693B CN201810916604.9A CN201810916604A CN109237693B CN 109237693 B CN109237693 B CN 109237693B CN 201810916604 A CN201810916604 A CN 201810916604A CN 109237693 B CN109237693 B CN 109237693B
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- workshop
- ventilation
- harmful gas
- guide plate
- air
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F7/00—Ventilation
- F24F7/007—Ventilation with forced flow
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
- F24F13/10—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers
- F24F13/14—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of tilting members, e.g. louvre
- F24F13/15—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of tilting members, e.g. louvre with parallel simultaneously tiltable lamellae
Abstract
A workshop airflow induction and harmful gas purification method belongs to the technical field of workshop discharged harmful gas induction and purification. The method for inducing ventilation and purifying harmful gas in the workshop is realized by a device for inducing ventilation and purifying harmful gas in the workshop, and comprises the following steps: step one, arranging ventilation openings at the eave positions at two sides of a workshop; step two, arranging an induction fan in the middle of a roof in a workshop, and respectively arranging spraying systems outside air vents on two sides of the workshop; inducing a fan to accelerate the air flow in the workshop to be discharged from a vent; and step four, when the airflow in the workshop is discharged outwards, treating the airflow through a spraying system. The workshop airflow induction and harmful gas purification method realizes the optimal indoor airflow organization and achieves the efficient and economic ventilation effect; the induction fan is selected as an induction source, so that the workshop span is effectively widened, the requirement of a large-span workshop is met, a good air flow organization can be formed, and more energy is saved.
Description
Technical Field
The invention relates to the technical field of induction and purification of harmful gas discharged outside a workshop, in particular to a workshop gas flow induction and harmful gas purification method.
Background
A plurality of production devices are installed in a production workshop, a large amount of harmful gas is generated in production, although the devices are provided with local exhaust systems, the devices cannot be completely sealed due to operation and other reasons, and a small amount of harmful gas always overflows into the workshop. At present, in industrial production, a roof ventilator is usually arranged on a ridge of a hot workshop, hot air in the workshop is discharged under the action of hot pressing, and harmful gas is taken away; in cold shops, fans are usually installed on the side walls to forcibly exhaust harmful gases in rooms. The ventilation mode among the prior art can't solve the poor problem of large-span workshop ventilation effect.
Disclosure of Invention
In order to solve the problems in the prior art, the invention aims to provide a workshop induced ventilation and harmful gas purification method, under the action of an induced fan at the top of a workshop, disordered gas flow in the workshop is formed into organized gas flow and is orderly discharged to the outer side of the workshop, and a spraying system arranged at the outer side of the workshop is used for capturing and absorbing harmful substances in discharged gas, so that purification is realized.
In order to achieve the purpose of the invention, the technical scheme of the invention is as follows:
a workshop induced ventilation and harmful gas purification method is realized by a workshop induced ventilation and harmful gas purification device, the workshop induced ventilation and harmful gas purification device comprises an upper guide plate, a lower guide plate, an induced fan, a spraying system, a liquid accumulation plate, an air valve, an air direction and air speed sensor and a control system, the upper guide plate is of a V-shaped structure, the highest points of two edges of the upper guide plate are respectively arranged at the upper part of a vent, the vent is arranged at the eaves at two sides of a workshop, the two lower guide plates are respectively correspondingly arranged below the two edges of the upper guide plate, the induced fan is arranged below the lowest point of the upper guide plate, the spraying system, the air valve and the air direction and air speed sensor are respectively arranged at the outer sides of the vent at two sides of the workshop, and a controller is respectively connected with the induced fan and the spraying system and is used for, the controller is connected with the air valve and is used for adjusting the angle of the air valve;
the workshop induced ventilation and harmful gas purification method comprises the following steps:
step one, arranging ventilation openings at the eave positions at two sides of a workshop;
step two, arranging an induction fan in the middle of a roof in a workshop, and respectively arranging spraying systems outside air vents on two sides of the workshop;
inducing a fan to accelerate the air flow in the workshop to be discharged from a vent;
and step four, when the airflow in the workshop is discharged outwards, treating the airflow through a spraying system.
The lower guide plate is provided with a plurality of air ports, the two sides of each air port are provided with auxiliary guide plates, and the auxiliary guide plates are connected with the lower guide plate.
An air valve is arranged at the vent, and a wind direction and wind speed sensor is arranged at the roof above the vent.
The spraying system comprises a pressurizing pipeline system, a nozzle, a liquid accumulation disc, a liquid accumulation recovery pipeline and a liquid accumulation pool, the pressurizing pipeline system comprises a pressurizing pump and a pipeline, and the liquid accumulation pool is provided with a subsequent treatment system.
The technical effect of the workshop induced ventilation and harmful gas purification method is that the optimal indoor airflow organization is realized, and the efficient and economic ventilation effect is achieved; compared with the natural ventilation of a hot workshop, the induction fan is selected as an induction source, so that the span of the workshop is effectively widened under the induction action, particularly under the action of attached jet flow, the air flow structure formed by the induction fan is more orderly and reasonable than the air flow structure formed by hot pressure, and the ventilation effect is better; compared with workshop mechanical ventilation, the induction ventilation is adopted, the action range is wider, the requirement of a large-span workshop is met, a good air flow organization is formed, and the induction ventilation scheme is more energy-saving; the method can be applied to hot workshops and cold workshops, and can be used for treating subsequent gas according to requirements.
Drawings
FIG. 1 is a schematic view of a workshop induced ventilation and harmful gas purification method provided by the invention implemented in a workshop;
fig. 2 is a schematic installation diagram of the air valve, the wind direction and speed sensor and the spraying system provided by the invention.
Wherein the content of the first and second substances,
1-upper guide plate, 2-lower guide plate, 3-auxiliary guide plate, 4-induced fan, 5-spraying system, 6-liquid-accumulating plate, 7-air valve and 8-wind direction and speed sensor.
Detailed Description
In order to solve the problems in the prior art, as shown in fig. 1 to 2, the invention provides a workshop induced ventilation and harmful gas purification method, which is realized by a workshop induced ventilation and harmful gas purification device, wherein the workshop induced ventilation and harmful gas purification device comprises an upper guide plate 1, a lower guide plate 2, an induced fan 4, a spraying system 5, a liquid loading disc 6, an air valve 7, a wind direction and wind speed sensor 8 and a control system, the upper guide plate 1 is of a V-shaped structure, the highest points of two edges of the upper guide plate 1 are respectively arranged at the upper part of the air vent, the air vent is arranged at two side eaves of a workshop, the two lower guide plates 2 are respectively and correspondingly arranged below the two edges of the upper guide plate 1, the lower guide plate 2 is provided with a plurality of air ports, two sides of each air port are provided with an auxiliary guide plate 3, and the. The inducing fans 4 are arranged below the lowest point of the upper guide plate 1, and the inducing fans 4 in two directions are arranged and are respectively used for inducing airflow in a workshop to flow to the ventilation openings adjacent to the inducing fans and discharging the airflow out of the workshop. In this embodiment, the water conservancy diversion design is done on the roof in the workshop, is equipped with simultaneously and induces fan 4, and the air current is discharged to the workshop both sides organically in the workshop with higher speed, through the efflux angle of the induced fan 4 of adjustment, makes the air current form attached efflux under last guide plate 1, has increased jet length effectively to satisfy the requirement in large-span workshop, and draw and penetrate the air current and drive peripheral air current and carry out the heat and mass exchange rapidly, make more air current discharges in the workshop. As shown in fig. 1, D and E represent the areas below the lower guide plate 2, and the lower guide plate 2 is provided with the tuyere, so that the problem of the airflow circulation dead angle of the D, E area below the lower guide plate 2 is effectively solved under the injection action of the main airflow, and the harmful gas in the area can be gathered into the main airflow through the tuyere and then discharged out of the workshop.
As shown in fig. 1, the outside of the vent on both sides of the workshop is provided with a spraying system 5, an air valve 7 and an air direction and air speed sensor 8 respectively, the air direction and air speed sensor 8 is used for detecting the air direction and the air speed outside the workshop, and when the air direction is opposite to the direction of the air flow outside the workshop, a signal is sent to the controller, the vent is provided with the air valve 7, the roof above the vent is provided with the air direction and air speed sensor 8, the spraying system 5 comprises a pressurizing pipeline system, a nozzle, an effusion disc 6, an effusion recovery pipeline and an effusion pool, the pressurizing pipeline system comprises a pressurizing pump and a pipeline, and the effusion pool is provided with a subsequent processing. In this embodiment, the liquid that the pressurization pipe-line system will be used for spraying pressurizes and carries to the nozzle through the force (forcing) pump, spout by the nozzle again, carry out entrapment and absorption to the harmful substance in the exhaust gas, hydrops dish 6 will be retrieved nozzle spun liquid and the harmful substance that the entrapment absorbed down together, send back to the hydrops pond through hydrops recovery pipeline, the hydrops pond is equipped with subsequent processing system, it filters, arrange sediment, fluid infusion etc. to the recovery liquid that retrieves down by subsequent processing system, the pressurization pipe-line system is connected with the hydrops pond, the liquid that is used for spraying is again through the output of pressurization pipe-line system, spout through the nozzle, so form the circulation. In addition, when the gas flow in the workshop is discharged outside, according to the composition of harmful substances in the gas, such as oxysulfide, nitric oxide, acid-base steam and the like, a proper absorbent is selected correspondingly, the spraying system 5 is adopted to treat the external exhaust flow, the air flow resistance in the mass transfer process is absorbed by the inducing fan 4, the spraying system 5 is arranged outside the workshop to treat, the system can be conveniently maintained, the adverse effects of leakage and the like on equipment in the workshop are prevented, and safety accidents are prevented.
The controller is respectively connected with the induction fan 4 and the spraying system 5 and used for controlling the opening and closing of the induction fan 4 and the spraying system 5, and the controller is connected with the air valve 7 and used for adjusting the angle of the air valve 7. In the embodiment, the controller is a PLC with the model of Siemens S7-200, is programmed by utilizing Siemens PLC programming software STEP 7-Micro/WIN V4.0SP8, inputs a program into the PLC, and is controlled by the PLC.
As shown in fig. 1, a and B represent two sides of a workshop, air vents at the two sides of the workshop are respectively provided with a wind direction and wind speed sensor 8 for detecting outdoor wind direction and wind speed, when the wind direction is opposite to the direction of the air flow discharge at the side a of the workshop, the wind direction and wind speed sensors 8 send signals to a controller, the controller closes an induction fan 4 and a spraying system 5 close to the side a, and the angle of an air valve 7 is adjusted. The side A fan is closed, so that the air flow outside the workshop is facilitated to enter the workshop from the side A and is exhausted from the workshop from the side B; closing the spraying system 5 at the side A to prevent wind from bringing the sprayed liquid drops into a workshop; the angle of the air valve 7 is adjusted to prevent spray liquid drops or rainwater from splashing to enter a workshop. Similarly, when the wind direction of the B side is opposite to the direction of the air flow discharged from the workshop, the treatment is carried out according to the same method.
The method for inducing ventilation and purifying harmful gas in the workshop comprises the following steps:
step one, arranging ventilation openings at the eave positions at two sides of a workshop
Secondly, an induction fan 4 is arranged in the middle of the roof in the workshop, and spraying systems 5 are respectively arranged on the outer sides of ventilation openings on the two sides of the workshop;
thirdly, inducing the fan 4 to accelerate the air flow in the workshop to be discharged from the ventilation opening;
and step four, when the airflow in the workshop is discharged outwards, the airflow is processed through a spraying system 5.
In the embodiment, the workshop induced ventilation and harmful gas purification method and the hot workshop adopt the roof ventilator to realize comprehensive ventilation, and under the induction action of the fan, the workshop span is effectively widened under the action of the attached jet flow, so that the problem of poor ventilation effect of the large-span workshop is solved. In the actual engineering design, because the instability of the wind pressure mainly considers the effect of hot pressing in a workshop, the density difference of the air inside and outside the workshop is very small, the hot pressing value is about 50Pa, and the formed airflow structure has weaker disturbance capacity than that of the induction fan 4, so the airflow structure formed by adopting the workshop induced ventilation and harmful gas purification method is more orderly and reasonable, and the ventilation effect is better. Compared with a method for realizing comprehensive ventilation by selecting mechanical ventilation for a cold workshop, the method for realizing the workshop induced ventilation and the harmful gas purification has the advantages that the method for realizing the workshop induced ventilation and the harmful gas purification adopts an induced ventilation scheme, has wider action range and completely meets the requirement of a large-span workshop; moreover, compared with the quick attenuation of air suction airflow, the air flow is slowly attenuated when induced ventilation is adopted, so that a good airflow organization is formed in a workshop, and the problem of airflow disorder in the past cold workshop is well solved; in addition, the induced ventilation adopts jet flow with small air quantity and high air speed, the energy consumption is lower than that of mechanical ventilation, the optimal indoor airflow organization is realized by the workshop induced ventilation and harmful gas purification method, and the efficient and economic ventilation effect is achieved.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (4)
1. A workshop induced ventilation and harmful gas purification method is realized by a workshop induced ventilation and harmful gas purification device and is characterized in that the workshop induced ventilation and harmful gas purification device comprises an upper guide plate, a lower guide plate, an induced fan, a spraying system, a liquid accumulation plate, an air valve, an air direction and air speed sensor and a control system, the upper guide plate is of a V-shaped structure, the highest points of two edges of the upper guide plate are respectively arranged at the upper part of a vent, the vent is arranged at the position of two side eaves of a workshop, the two lower guide plates are respectively correspondingly arranged below the two edges of the upper guide plate, the induced fan is arranged below the lowest point of the upper guide plate, the spraying system, the air valve and the air direction and air speed sensor are respectively arranged at the outer sides of the vent at two sides of the workshop, a controller is respectively connected with the induced fan and the spraying system and is used for, the controller is connected with the air valve and is used for adjusting the angle of the air valve;
the workshop induced ventilation and harmful gas purification method comprises the following steps:
step one, arranging ventilation openings at the eave positions at two sides of a workshop;
step two, arranging an induction fan in the middle of a roof in a workshop, and respectively arranging spraying systems outside air vents on two sides of the workshop;
inducing a fan to accelerate the air flow in the workshop to be discharged from a vent;
and step four, when the airflow in the workshop is discharged outwards, treating the airflow through a spraying system.
2. The plant induced ventilation and harmful gas purification method as claimed in claim 1, wherein the lower guide plate is provided with a plurality of tuyeres, and auxiliary guide plates are provided at both sides of each tuyere and connected to the lower guide plate.
3. The method for inducing ventilation and purifying harmful gases for workshop according to claim 1, characterized in that an air valve is arranged at the vent, and a wind direction and wind speed sensor is arranged at the roof above the vent.
4. The method for inducing ventilation and purifying harmful gases in a workshop according to claim 1, wherein the spraying system comprises a pressurizing pipeline system, a nozzle, a liquid accumulation disc, a liquid accumulation recovery pipeline and a liquid accumulation pool, the pressurizing pipeline system comprises a pressurizing pump and a pipeline, and the liquid accumulation pool is provided with a subsequent treatment system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810916604.9A CN109237693B (en) | 2018-08-13 | 2018-08-13 | Workshop airflow induction and harmful gas purification method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810916604.9A CN109237693B (en) | 2018-08-13 | 2018-08-13 | Workshop airflow induction and harmful gas purification method |
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| Publication Number | Publication Date |
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| CN109237693A CN109237693A (en) | 2019-01-18 |
| CN109237693B true CN109237693B (en) | 2020-11-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810916604.9A Active CN109237693B (en) | 2018-08-13 | 2018-08-13 | Workshop airflow induction and harmful gas purification method |
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Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6293862B1 (en) * | 1999-08-13 | 2001-09-25 | Dundas Jafine, Inc. | Roof vent |
| US8915022B2 (en) * | 2011-06-07 | 2014-12-23 | 3M Innovative Properties Company | System and method for management of a roof |
| CN204963085U (en) * | 2015-08-11 | 2016-01-13 | 昆山俊润通风降温设备有限公司 | Ventilation assembly |
| CN204963089U (en) * | 2015-08-11 | 2016-01-13 | 昆山俊润通风降温设备有限公司 | Exhaust system with cleaning device |
| CN106482296A (en) * | 2016-10-20 | 2017-03-08 | 北京云洋数据科技有限公司 | Leak informaton adjusting means, booth and booth of booth leaks informaton control method |
| CN106522447A (en) * | 2016-11-17 | 2017-03-22 | 江苏智石科技有限公司 | High-efficient heat-isolating ventilating type roof of factory |
| CN207211850U (en) * | 2017-07-28 | 2018-04-10 | 中机国能电力工程有限公司 | A kind of main building for improving aeration structure |
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- 2018-08-13 CN CN201810916604.9A patent/CN109237693B/en active Active
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