CN216542180U - Blowing-sucking type ventilation device for thermal cutting - Google Patents
Blowing-sucking type ventilation device for thermal cutting Download PDFInfo
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- CN216542180U CN216542180U CN202122876650.0U CN202122876650U CN216542180U CN 216542180 U CN216542180 U CN 216542180U CN 202122876650 U CN202122876650 U CN 202122876650U CN 216542180 U CN216542180 U CN 216542180U
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Abstract
A blowing-sucking type ventilation device for thermal cutting comprises an axial flow fan, wherein the axial flow fan is connected with an alloy frame and a flame-retardant PC plate, the flame-retardant PC plate is fixed on the alloy frame, a gas distribution grid plate is fixed on the alloy frame, and the right side of the gas distribution grid plate is connected with a rectangular air window; the rectangular air window is fixed on the alloy frame, the blowing control valve is connected with the rectangular air window, and the centrifugal fan is connected with the rectangular air window.
Description
Technical Field
The invention particularly relates to the field of ventilation devices, and particularly relates to a blowing and sucking type ventilation device for thermal cutting.
Background
In nuclear facility decommissioning and radioactive waste treatment metal member dismantling, plasma cutting and oxyacetylene cutting are commonly used as thermal cutting techniques. The hot cutting technology has strong adaptability to metal wastes of different materials, simple and convenient operation and high efficiency, and is widely applied. However, when the rusty layer and the coating are formed on the surface of the cut metal, a large amount of radioactive smoke dust is generated in the hot cutting operation, so that the concentration of aerosol in a workplace is rapidly increased, and the personal safety is harmed. Efficient smoke evacuation and personnel protection are difficult problems in hot cutting operations.
At present, a radioactive solid waste treatment thermal cutting ventilation system consists of factory air supply, factory air exhaust and local single-suction type air exhaust of a thermal cutting station. The local single-suction type exhaust hood is arranged at the top of the cutting station and is about 3m away from the operating surface, and the radioactive smoke dust is collected by sucking airflow through the exhaust hood. However, the distance of action of the suction air flow is very limited and the radioactive soot cannot be effectively discharged. Therefore, the radioactive gas is exhausted by simply depending on a pumping mode, and the required air volume is increased sharply when the radioactive source is far away, which is very uneconomical.
When the hot cutting smoke dust rises to the exhaust hood, the smoke dust is mainly removed by the aid of the rising hot air flow, and the suction air flow acts near the hood opening. However, the autonomous rising speed of the smoke dust is slow, when the radioactive smoke dust rises to the head height of an operator, the radioactive smoke dust possibly enters the human body through the breathing of the operator to form internal irradiation, and the protection effect of the common protective mask is poor. Compressed air is blown out of the plasma and oxyacetylene cutting nozzle and is used for blowing off the melted metal to form a section. In the process, dust on the operation surface can be blown away, and the diffusion of metal particles is accompanied, so that the dust can cause more harm to human bodies. In addition, if the removal efficiency of the radioactive smoke dust is not enough, the radioactive smoke dust overflows from the cutting station, the formed aerosol is suspended in a hall for a long time due to slow sedimentation, and internal irradiation is caused after a human body inhales.
The invention relates to a blowing and sucking type ventilation device for thermal cutting, which can effectively solve the problems of dispersion, suspension and the like of smoke dust in the conventional thermal cutting process, blow off radioactive smoke dust through blown airflow and greatly overcome the defect that the control effect of the traditional local ventilation on remote polluted gas is poor.
Disclosure of Invention
The invention aims to: the hot cutting blowing and sucking type ventilation device can effectively reduce the retention time of smoke dust in a space field in the hot cutting process, reduce the risks of exposure of personnel and dust suction, supplement the means for smoke dust treatment in hot cutting operation, and effectively improve the operation environment of the operating personnel.
The technical scheme of the invention is as follows: a blowing-sucking type ventilation device for thermal cutting comprises an axial flow fan, wherein the axial flow fan is connected with an alloy frame and a flame-retardant PC plate, the flame-retardant PC plate is fixed on the alloy frame, a gas distribution grid plate is fixed on the alloy frame, and the right side of the gas distribution grid plate is connected with a rectangular air window; the rectangular air window is fixed on the alloy frame, the blowing control valve is connected with the rectangular air window, and the centrifugal fan is connected with the rectangular air window.
The axial flow fan is connected with the alloy frame and the flame-retardant PC board by bolts and sealant.
The alloy frame and the flame-retardant PC plate are connected by using a sealing strip and sealed.
The flame-retardant PC board is in a strip block shape.
The gas distribution grid plate is fixed on the alloy frame through bolts.
The shape wind window is fixed on the alloy frame through bolts and sealant.
The rectangular air window adopts a T-shaped structure.
The blowing control valve is connected with the rectangular air window through a bolt.
The centrifugal fan is connected with the rectangular air window by bolts
The invention has the following remarkable effects: the development and application of the thermal cutting blowing-sucking type ventilation device can effectively reduce the retention time of smoke dust in a space field in the thermal cutting process, reduce the risks of exposure of personnel and dust suction, supplement the means for smoke dust treatment in thermal cutting operation and effectively improve the operating environment of the operating personnel.
The invention adopts a blowing-sucking type ventilation mode, realizes the rapid extraction of smoke generated in the cutting process, controls the pollution smoke dust under the same condition, requires smaller air quantity and can achieve the effect of saving energy consumption.
Drawings
Fig. 1 is a schematic view of a hot-cutting, blow-and-suction type ventilation apparatus according to the present invention.
In the figure: 1 axial flow fan, 2 alloy frame, 3 flame-retardant PC board, 4 gas distribution grate board, 5 rectangle wind window, 6 blast control valve, 7 centrifugal fan.
Detailed Description
A blowing-sucking type ventilation device for thermal cutting comprises an axial flow fan 1, wherein the axial flow fan 1 is connected with an alloy frame 2 and a flame-retardant PC (polycarbonate) plate 3 through bolts and sealant, and the control of air flow in an air suction flow field range is realized. The flame-retardant PC board 3 is in a strip block shape and is fixed on the alloy frame 2 through a bolt, and the alloy frame 2 and the flame-retardant PC board 3 are connected through a sealing strip and sealed. The gas distribution grid plate 4 is fixed on the alloy frame 2 through bolts, and the right side of the gas distribution grid plate 4 is connected with a rectangular wind window 5. Rectangular wind window 5 passes through the bolt and sealed the glue to be fixed on alloy frame 2, and rectangular wind window 5 adopts T font structure, and the air current of being convenient for blow off diffuses fast, and the air current forms a plurality of horizontal air current fields in the device behind the gas distribution fence board, and the smoke and dust discharges with higher speed. The blowing control valve 6 is connected with the rectangular air window 5 through a bolt, and the blowing amount is controlled. The centrifugal fan 7 is connected with the rectangular air window 5 through bolts, and air is blown during use.
In conclusion, the invention has good effect, thoroughly solves the problem of smoke dust discharge in the decommissioning of nuclear facilities and the cutting process of radioactive waste treatment metal, and has no potential hidden trouble.
Claims (9)
1. The utility model provides a blowing-sucking type ventilation unit of hot cutting which characterized in that: the device comprises an axial flow fan (1), wherein the axial flow fan (1) is connected with an alloy frame (2) and a flame-retardant PC plate (3), the flame-retardant PC plate (3) is fixed on the alloy frame (2), a gas distribution grid plate (4) is fixed on the alloy frame (2), and the right side of the gas distribution grid plate (4) is connected with a rectangular air window (5); the rectangular air window (5) is fixed on the alloy frame (2), the blowing control valve (6) is connected with the rectangular air window (5), and the centrifugal fan (7) is connected with the rectangular air window (5).
2. A thermal cutting, blow and suction ventilator as in claim 1, wherein: the axial flow fan (1) is connected with the alloy frame (2) and the flame-retardant PC board (3) by bolts and sealant.
3. A thermal cutting, blow and suction ventilator as in claim 1, wherein: the alloy frame (2) and the flame-retardant PC plate (3) are connected and sealed by using a sealing strip.
4. A thermal cutting, blow and suction ventilator as in claim 1, wherein: the flame-retardant PC board (3) is in a strip block shape.
5. A hot-cutting, blow and suction ventilation unit according to claim 4, characterized in that: the gas distribution grid plate (4) is fixed on the alloy frame (2) through bolts.
6. A thermal cutting, blow and suction ventilator as in claim 1, wherein: the shape wind window (5) is fixed on the alloy frame (2) through bolts and sealant.
7. A thermal cutting, blow and suction ventilator as in claim 1, wherein: the rectangular air window (5) adopts a T-shaped structure.
8. A thermal cutting, blow and suction ventilator as in claim 1, wherein: the blowing control valve (6) is connected with the rectangular air window (5) through a bolt.
9. A thermal cutting, blow and suction ventilator as in claim 1, wherein: the centrifugal fan (7) is connected with the rectangular air window (5) by bolts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122876650.0U CN216542180U (en) | 2021-11-19 | 2021-11-19 | Blowing-sucking type ventilation device for thermal cutting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122876650.0U CN216542180U (en) | 2021-11-19 | 2021-11-19 | Blowing-sucking type ventilation device for thermal cutting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216542180U true CN216542180U (en) | 2022-05-17 |
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ID=81575900
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122876650.0U Active CN216542180U (en) | 2021-11-19 | 2021-11-19 | Blowing-sucking type ventilation device for thermal cutting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216542180U (en) |
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2021
- 2021-11-19 CN CN202122876650.0U patent/CN216542180U/en active Active
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