CN212190542U - Toxic gas discharging device - Google Patents
Toxic gas discharging device Download PDFInfo
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- CN212190542U CN212190542U CN202020368296.3U CN202020368296U CN212190542U CN 212190542 U CN212190542 U CN 212190542U CN 202020368296 U CN202020368296 U CN 202020368296U CN 212190542 U CN212190542 U CN 212190542U
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- toxic gas
- pipeline
- centrifugal fan
- pipe
- air inlet
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Abstract
The utility model provides a toxic gas discharge device, which comprises a first conveying pipeline, a centrifugal fan and a discharge pipe; two ends of the centrifugal fan are respectively communicated with the first conveying pipeline and the discharge pipe; the first conveying pipeline is arranged in the process equipment pit and is provided with an air inlet; the top end of the discharge pipe is located outside the process equipment pit. The centrifugal fan during operation can produce suction, and the toxic gas in the hole gets into first pipeline from the air inlet to process equipment hole is discharged from the top of delivery pipe behind the centrifugal fan, has avoided the workman to poison the condition and has taken place.
Description
Technical Field
The utility model belongs to the technical field of the chemical industry equipment technique and specifically relates to a toxic gas eduction gear is related to.
Background
Carbon disulfide has a wide application in industrial production, for example, carbon disulfide can be used as a raw material for manufacturing viscose fibers and cellophane, can also be used as an anticorrosive agent for pipelines, and can also be used as an aviation lubricant.
A process equipment pit is provided in the unit for preparing carbon disulfide, and the possibility of gathering toxic gases such as hydrogen sulfide and carbon disulfide exists in the pit. To avoid the occurrence of worker poisoning, an exhaust device is needed to exhaust toxic gases out of the process equipment pit.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a toxic gas eduction gear can prevent that the workman from being poisoned with the toxic gas discharge in the process equipment hole.
The utility model provides a toxic gas discharge device, which comprises a first conveying pipeline, a centrifugal fan and a discharge pipe;
two ends of the centrifugal fan are respectively communicated with the first conveying pipeline and the discharge pipe;
the first conveying pipeline is used for being arranged in a process equipment pit, and an air inlet is formed in the first conveying pipeline;
the top end of the discharge pipe is located outside the process equipment pit.
As a further aspect of the present invention, the first conveying pipeline is provided with a plurality of air inlets at intervals along the length direction.
As a further aspect of the present invention, the direction of the centrifugal fan is close to the first conveying pipe, and the sectional area of the first conveying pipe is gradually increased.
As a further aspect of the present invention, the first conveying pipeline includes a first pipeline, a second pipeline, a third pipeline and a fourth pipeline which are sequentially communicated;
the centrifugal fan is communicated with the first pipeline;
the second pipeline is parallel to the fourth pipeline, the second pipeline is provided with the air inlet facing the fourth pipeline, and the fourth pipeline is provided with the air inlet facing the second pipeline.
As a further aspect of the utility model, be connected with the exhaust pipe on first pipeline's the side at the bottom of the orientation hole, the air inlet set up in the exhaust pipe, just air inlet department is provided with the shutter.
As a further aspect of the present invention, the centrifugal fan and be provided with the governing valve between the first pipeline, the governing valve is used for adjusting centrifugal fan's the amount of wind.
As a further aspect of the present invention, the toxic gas discharging device comprises two parallel centrifugal fans.
As a further aspect of the present invention, the toxic gas discharging apparatus further comprises a toxic gas detector, the toxic gas detector is connected to the centrifugal fan for controlling the centrifugal fan to start and stop.
As a further aspect of the present invention, the top of the discharge pipe is provided with a hood.
As a further aspect of the present invention, the toxic gas discharge device further includes a second conveying pipe, and the centrifugal fan passes through the second conveying pipe and the discharge pipe.
Technical scheme more than combining, the utility model discloses the beneficial effect analysis of bringing is as follows:
the utility model provides a toxic gas eduction gear, this toxic gas eduction gear have first pipeline, centrifugal fan and delivery pipe. The two ends of the centrifugal fan are respectively communicated with the first conveying pipeline and the discharge pipe. The first conveying pipeline is used for being arranged in the process equipment pit, and an air inlet is formed in the first conveying pipeline. The centrifugal fan during operation can produce suction, and the toxic gas in the hole gets into first pipeline from the air inlet to process equipment hole is discharged from the top of delivery pipe behind the centrifugal fan, has avoided the workman to poison the condition and has taken place.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a toxic gas exhaust device according to an embodiment of the present invention;
FIG. 2 is a view taken along line A of FIG. 1;
FIG. 3 is a view taken along the line B in FIG. 1;
fig. 4 is a view from direction C of fig. 1.
Icon: 10-a first delivery conduit; 11-a first conduit; 12-a second conduit; 13-a third conduit; 14-a fourth conduit; 20-a second delivery conduit; 21-a fifth pipeline; 22-a sixth conduit; 30-a centrifugal fan; 40-a discharge pipe; 41-blast cap; 50-an exhaust pipe; 51-a shutter; 60-regulating valve.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The utility model provides a toxic gas discharging device, please refer to fig. 1 to 4 in the attached drawings of the specification together.
As shown in fig. 1, the toxic gas exhaust apparatus includes a first transfer pipe 10, a centrifugal fan 30, and a discharge pipe 40. Wherein both ends of the centrifugal fan 30 are respectively communicated with the first conveying pipe 10 and the discharge pipe 40. The first conveying pipeline 10 is arranged in the process equipment pit, and the first conveying pipeline 10 is provided with an air inlet for toxic gas to enter. The top end of the exhaust pipe 40 is located outside the process equipment, and the toxic gas is discharged out of the process equipment pit after flowing out of the top end of the exhaust pipe 40. It is preferable that the top end of the exhaust duct 40 is higher than the process equipment 1m to exhaust the poisonous gas to the high place outdoors.
The centrifugal fan 30 can generate suction when working, toxic gas in the pit enters the first conveying pipeline 10 from the air inlet, and is discharged out of the process equipment pit from the top end of the discharge pipe 40 after passing through the centrifugal fan 30, and therefore the poisoning condition of workers is avoided.
The first conveying pipeline 10 is provided with a plurality of air inlets at intervals along the length direction, so that toxic gas in each part in the process equipment pit can quickly enter the first conveying pipeline 10 from the air inlet closest to the air inlet, and the discharge speed of the toxic gas is high. Of course, the provision of only one gas inlet on the first transfer duct 10 also enables toxic gases to be removed from the process equipment pit.
When the first conveying pipe 10 is provided with a plurality of air inlets, it is preferable that, as shown in fig. 1, the cross-sectional area of the first conveying pipe 10 is gradually increased along a direction approaching the centrifugal fan 30. Since the plurality of air inlets are spaced along the length direction of the first conveying pipeline 10, the toxic gas is gathered more at the position of the first conveying pipeline 10 closer to the centrifugal fan 30, so that the sectional area of the first conveying pipeline 10 is set to the shape, and the situation that the air pressure at the position close to the centrifugal fan 30 is too large is avoided.
With continued reference to fig. 1, the first delivery conduit 10 includes a first conduit 11, a second conduit 12, a third conduit 13, and a fourth conduit 14 in serial communication. The centrifugal fan 30 communicates with the first duct 11, and the centrifugal fan 30 performs suction of the toxic gas at the first duct 11. The second pipeline 12 is parallel to the fourth pipeline 14, an air inlet facing the fourth pipeline 14 is formed in the second pipeline 12, and an air inlet facing the second pipeline 12 is formed in the fourth pipeline 14. The toxic gas enters the first delivery pipe from the gas inlets of the second pipe 12 and the fourth pipe 14. This toxic gas eduction gear when arranging, can make second pipeline 12 and fourth pipeline 14 be close to the inner wall in process equipment hole, can install process equipment between second pipeline 12 and the fourth pipeline 14, and simultaneously, set up the air inlet towards fourth pipeline 14 on the second pipeline 12, set up the air inlet towards second pipeline 12 on the fourth pipeline 14, the air inlet on second pipeline 12 and the fourth pipeline 14 all faces process equipment promptly, make things convenient for toxic gas to get into first pipeline 10 and discharge the process equipment hole.
The first transfer duct 10 in fig. 1 is bent to form a rectangle, which is adapted to the shape of the process equipment pit. Of course, the shape of the first transfer pipe 10 is not limited to a rectangle, and may be curved according to the shape of the process equipment pit, for example, may be curved in a square, a circle, or the like.
As shown in fig. 3, which is a view taken along a direction in fig. 1, an exhaust duct 50 is connected to a side surface of the first conveying pipe 10 facing the pit bottom, an air inlet is provided in the exhaust duct 50, and a louver 51 is provided at the air inlet, and the louver 51 can block foreign matters from being sucked into the first conveying pipe 10. The toxic gas enters the exhaust duct 50 from the louver 51 and then flows into the first conveying pipe 10.
As shown in fig. 2, an adjusting valve 60 is disposed between the centrifugal fan 30 and the first conveying pipe 10, and the adjusting valve 60 is used for adjusting the air volume of the centrifugal fan 30. The adjusting valve 60 is adjusted according to the concentration of the toxic gas in the process equipment pit to control the air quantity of the centrifugal fan 30, thereby controlling the discharge speed of the toxic gas. The regulator valve 60 is preferably an electrically operated split multi-vane regulator valve 60.
When the toxic gas discharge apparatus is opened, the centrifugal fan 30 is first opened, and then the regulating valve 60 is opened; when the toxic gas exhaust apparatus is closed, the control valve 60 is closed first, and then the centrifugal fan 30 is closed again.
According to the provisions of item 5.6.7 of chemical heating ventilation and air conditioning design Specifications (HG/T20698-2009), when the normal ventilation volume meets the accident ventilation volume, an accident ventilation system does not need to be additionally arranged, but a standby ventilator needs to be additionally arranged in the normal ventilation system. The toxic gas exhaust device is provided with two centrifugal fans 30 which are arranged in parallel, so that the toxic gas exhaust device can meet the requirements of normal ventilation and accident ventilation.
When the working centrifugal fan 30 fails to cause shutdown, the failed centrifugal fan 30 is closed, and the normal centrifugal fan 30 is opened; meanwhile, the regulating valve 60 corresponding to the normal centrifugal fan 30 is opened, and the regulating valve 60 corresponding to the failed centrifugal fan 30 is closed.
The toxic gas discharge device further comprises a toxic gas detector, and the toxic gas detector is connected with the centrifugal fan 30 and used for controlling the centrifugal fan 30 to start and stop. When the toxic gas is detected to be in the pit of the process equipment, the toxic gas detector controls the centrifugal fan 30 to be started, and then the toxic gas is gradually discharged from the pit.
As shown in fig. 4, the top of the discharge tower is provided with a hood 41. The hood 41 can prevent foreign materials, rainwater, etc. from entering the discharge pipe 40, thereby preventing the toxic gas discharging apparatus from being affected in its normal operation.
As shown in fig. 1, the toxic gas exhaust apparatus further includes a second transfer pipe 20, and the centrifugal fan 30 is communicated with the discharge pipe 40 through the second transfer pipe 20. The toxic gas is discharged from the centrifugal fan 30, enters the second transfer pipe 20, flows to the discharge pipe 40, and is finally discharged out of the process equipment pit from the top of the discharge pipe 40.
With continued reference to fig. 1, the second delivery duct 20 comprises a fifth duct 21 and a sixth duct 22 in communication with each other. The centrifugal fan 30 communicates with the fifth duct 21, the discharge pipe 40 is connected to an end of the sixth duct 22 remote from the fifth duct 21, and the discharge pipe 40 communicates with the sixth duct 22. The toxic gas discharged from the centrifugal fan 30 first enters the fifth pipe 21, then flows to the sixth pipe 22 through the fifth pipe 21, and finally flows from the sixth pipe 22 to the discharge pipe 40 and is discharged out of the process equipment pit from the top end of the discharge pipe 40.
It should be noted that according to the specification of appendix C of chemical heating ventilation and air conditioning design Specification (HG/T20698-2009), the number of times of ventilation of the chemical substance diffusion workshop is 30 times/h, and the number of times of ventilation of hydrogen sulfide is 6 times/h. Therefore, the comprehensive ventilation frequency in the pit of the toxic gas discharge device is controlled to be more than or equal to 30 times/h.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the embodiments of the present invention.
Claims (10)
1. A toxic gas exhaust apparatus, comprising a first transfer duct (10), a centrifugal fan (30) and a discharge duct (40);
both ends of the centrifugal fan (30) are respectively communicated with the first conveying pipeline (10) and the discharge pipe (40);
the first conveying pipeline (10) is arranged in a process equipment pit, and an air inlet is formed in the first conveying pipeline (10);
the top end of the discharge pipe (40) is located outside the process equipment pit.
2. The toxic gas discharging apparatus according to claim 1, wherein the first transporting pipe (10) is provided with a plurality of the gas inlets at intervals in a length direction.
3. The toxic gas discharging device according to claim 2, wherein the first conveying pipe (10) has a sectional area gradually increasing in a direction approaching the centrifugal fan (30).
4. The toxic gas discharging apparatus according to claim 2, wherein the first transporting pipe (10) includes a first pipe (11), a second pipe (12), a third pipe (13) and a fourth pipe (14) which are sequentially communicated;
the centrifugal fan (30) is communicated with the first pipeline (11);
the second pipeline (12) is parallel to the fourth pipeline (14), the second pipeline (12) is provided with the air inlet facing the fourth pipeline (14), and the fourth pipeline (14) is provided with the air inlet facing the second pipeline (12).
5. The toxic gas discharging apparatus of claim 1, wherein an exhaust duct (50) is connected to a side of the first conveying pipe (10) facing the bottom of the pit, the air inlet is provided in the exhaust duct (50), and a louver (51) is provided at the air inlet.
6. The toxic gas discharging apparatus according to claim 1, wherein a regulating valve (60) is provided between the centrifugal fan (30) and the first transporting pipe (10), and the regulating valve (60) is used for regulating the air volume of the centrifugal fan (30).
7. The toxic gas discharging apparatus according to claim 1 or 6, comprising two of the centrifugal fans (30) arranged in parallel.
8. The toxic gas discharging apparatus according to claim 1, further comprising a toxic gas detector connected to the centrifugal fan (30) for controlling the start and stop of the centrifugal fan (30).
9. The toxic gas discharging apparatus according to claim 1, wherein a hood (41) is provided at the top of the discharging pipe (40).
10. The toxic gas discharging apparatus of claim 1, further comprising a second transfer duct (20), wherein the centrifugal fan (30) is in communication with the discharge pipe (40) through the second transfer duct (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020368296.3U CN212190542U (en) | 2020-03-20 | 2020-03-20 | Toxic gas discharging device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020368296.3U CN212190542U (en) | 2020-03-20 | 2020-03-20 | Toxic gas discharging device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212190542U true CN212190542U (en) | 2020-12-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020368296.3U Active CN212190542U (en) | 2020-03-20 | 2020-03-20 | Toxic gas discharging device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212190542U (en) |
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2020
- 2020-03-20 CN CN202020368296.3U patent/CN212190542U/en active Active
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