JP3197063U - Negative pressure dust removal equipment for emergencies - Google Patents

Negative pressure dust removal equipment for emergencies Download PDF

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JP3197063U
JP3197063U JP2015000520U JP2015000520U JP3197063U JP 3197063 U JP3197063 U JP 3197063U JP 2015000520 U JP2015000520 U JP 2015000520U JP 2015000520 U JP2015000520 U JP 2015000520U JP 3197063 U JP3197063 U JP 3197063U
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negative pressure
chimney
asbestos
work area
removal device
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秀樹 藤林
秀樹 藤林
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株式会社藤林商会
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Abstract

【課題】煙突内に上昇気流が発生する非常時に作業区域の負圧状態を回復できる非常時用負圧除塵装置を提供する。【解決手段】非常時用負圧除塵装置10は、煙突12の上部と下部に作業区域14、16を設け、ウインチ18に石綿除去装置20を取り付けて、煙突内で石綿除去装置を昇降させ、石綿除去装置のノズルから噴射される高圧水でアスベスト断熱材22を除去する場合に煙突の上部の作業区域14に設置するものであって、作業区域14の負圧状態を検知する負圧監視装置28と、負圧監視装置が大気圧へ近づいた状態を検知した時に作動する警報機30および負圧除塵装置本体32と、負圧除塵装置本体の吸気口に設ける吸引ダクト34とを備え、警報機が作動したとき、吸引ダクトの開口部を頂部煙突口36に挿入して、気圧上昇を阻止できる。【選択図】図1An emergency negative pressure dust removal device capable of recovering a negative pressure state in a work area in an emergency when an upward air flow is generated in a chimney. An emergency negative pressure dust removal device 10 is provided with work areas 14 and 16 at an upper portion and a lower portion of a chimney 12, an asbestos removal device 20 is attached to a winch 18, and the asbestos removal device is moved up and down in the chimney. A negative pressure monitoring device that is installed in the work area 14 above the chimney when the asbestos insulation 22 is removed with high-pressure water sprayed from the nozzle of the asbestos removal apparatus, and detects the negative pressure state of the work area 14 28, an alarm device 30 that operates when the negative pressure monitoring device detects a state approaching atmospheric pressure, a negative pressure dust removing device main body 32, and a suction duct 34 provided at an intake port of the negative pressure dust removing device main body. When the machine is activated, the suction duct opening can be inserted into the top chimney 36 to prevent pressure rise. [Selection] Figure 1

Description

本考案は、アスベスト除去作業区域に設置される非常時用負圧除塵装置に関するものである。   The present invention relates to an emergency negative pressure dust removal device installed in an asbestos removal work area.

煙突のアスベスト断熱材(煙突の内壁を形成するアスベストライニング材)を除去する場合、煙突の上部と下部に作業区域を設け、ウインチ等の吊り下げ手段に石綿除去装置を取り付けて、煙突内で石綿除去装置を昇降させ、石綿除去装置のノズルから噴射される高圧水でアスベスト断熱材を除去するアスベスト除去方法が知られている(たとえば、特許文献1)。   When removing asbestos insulation from the chimney (asbestos lining material that forms the inner wall of the chimney), work areas are provided at the top and bottom of the chimney, asbestos removal devices are attached to the hanging means such as winches, and asbestos is installed in the chimney. An asbestos removal method is known in which an asbestos heat insulating material is removed with high-pressure water ejected from a nozzle of an asbestos removal device by raising and lowering the removal device (for example, Patent Document 1).

特開2009−235762号公報(図1)JP 2009-235762 A (FIG. 1)

特許文献1に記載のアスベスト除去方法では、除去されたアスベスト断熱材は煙突の底部に落下し、底部付近の煙突に形成される排出口から取り出され、廃棄される。また、アスベスト除去作業の際、アスベスト粉塵が作業区域又はセキュリティーゾーンがから外部に漏れ出ないよう、下部の作業区域に負圧除塵装置を設置し、上部及び下部の作業区域を負圧状態に維持している。下部の作業区域に負圧除塵装置を設置することにより、煙突内に下降気流が起こり、アスベスト除去作業中に発生するアスベスト粉塵は、上部の作業区域には放出されず、煙突下部の排出口からのみ排出され、下部の作業区域に設置される負圧除塵装置に吸気され下部の作業区域の外部に排出される。   In the asbestos removal method described in Patent Document 1, the removed asbestos heat insulating material falls to the bottom of the chimney, and is taken out from the discharge port formed in the chimney near the bottom and discarded. In order to prevent asbestos dust from leaking out of the work area or security zone during asbestos removal work, a negative pressure dust removal device is installed in the lower work area, and the upper and lower work areas are maintained in a negative pressure state. doing. By installing a negative pressure dust removal device in the lower work area, a downdraft occurs in the chimney, and asbestos dust generated during asbestos removal work is not released to the upper work area, but from the discharge port at the lower part of the chimney. Is discharged, and is sucked into the negative pressure dust removing device installed in the lower work area and discharged outside the lower work area.

アスベスト断熱材の除去において、その除去作業中に下部作業区域の負圧除塵装置が停電で突然停止したり、煙突内のアスベスト断熱材が大量に剥落し煙突内がアスベスト断熱材で塞がれることがある。このような場合、煙突内の下降気流は遮断され、煙突内の除去に用いた高圧水は煙突内で熱エネルギーに変化するために温水と化してその水蒸気が煙突内にドラフト現象(上昇気流)を起こし、アスベスト粉塵およびアスベスト繊維を含む水蒸気が頂部煙突口に向かって移動する。
上昇気流が生じた場合、従来は、煙突頂部口をポリエチレン等にて塞いで頂部煙突口からアスベスト粉塵および水蒸気が放出されることを防いでいた。煙突の閉塞状態を解除する場合、頂部煙突口から閉塞解放作業等を行う必要があるが、ポリエチレンを取り除くと、上部の作業区域において、ドラフト現象の発生により大気圧状態へと移行し、最悪の場合加圧状態に至るおそれがある。また、この場合、アスベスト粉塵が上部の作業区域を経由してセキュリティーゾーンより外部に流出するおそれがある。
さらには、下部の作業区域に設置する負圧除塵装置の吸気フィルターが詰まり、また、停電により負圧除塵装置が停止して除去作業区域の吸気排気ができない状態になる非常時においても、外部にアスベスト粉塵が流出するおそれがある。
When removing asbestos insulation, the negative pressure dust removal device in the lower work area suddenly stops due to a power failure during the removal work, or a large amount of asbestos insulation in the chimney is peeled off and the chimney is blocked with asbestos insulation. There is. In such a case, the downdraft in the chimney is blocked, and the high-pressure water used for removal in the chimney changes to thermal energy in the chimney, so it becomes hot water and the water vapor is drafted into the chimney (updraft) The water vapor containing asbestos dust and asbestos fibers moves toward the top chimney.
When an updraft has occurred, conventionally, the chimney top was blocked with polyethylene or the like to prevent asbestos dust and water vapor from being released from the top chimney. When releasing the closed state of the chimney, it is necessary to perform a release operation from the top chimney.However, when polyethylene is removed, the upper working area shifts to an atmospheric pressure state due to the occurrence of a draft phenomenon. In some cases, the pressure may be reached. In this case, asbestos dust may flow out of the security zone via the upper work area.
Furthermore, even in an emergency where the suction filter of the negative pressure dust removal device installed in the lower work area is clogged, or the negative pressure dust removal device stops due to a power failure and the removal work area cannot be exhausted, it will be externally exposed. Asbestos dust may escape.

本考案は、上記課題を解決するもので、煙突内に上昇気流が発生する非常時又は除去作業区域の吸気排気ができない状態になる非常時に作業区域の負圧状態を回復でき、アスベスト粉塵の拡散を回避できる非常時用負圧除塵装置を提供することを目的とするものである。   The present invention solves the above-mentioned problems, and can recover the negative pressure state of the work area in the event of an updraft in the chimney or the situation where the intake and exhaust of the removal work area cannot be performed, and diffusion of asbestos dust It is an object of the present invention to provide an emergency negative pressure dust removal device that can avoid the above.

本考案の非常時用負圧除塵装置は、アスベスト断熱材又は吹き付けアスベストを除去する作業区域の負圧状態を監視する負圧監視装置と、負圧監視装置が大気圧へ近づいた状態を検知した時に作動する警報機と、負圧監視装置が大気圧へ近づいた状態を検知した時に作動する負圧除塵装置本体とを備えるようにしたものである。
また、煙突の上部と下部に作業区域を設け、吊り下げ装置に石綿除去装置を取り付けて、煙突内で石綿除去装置を昇降させ、石綿除去装置のノズルから噴射される高圧水でアスベスト断熱材を除去する場合に、煙突の上部の作業区域内又は外部に非常時用負圧除塵装置を設置し、非常時用負圧除塵装置の吸気口に吸引ダクトを設け、警報機が作動したとき、吸引ダクトの開口部を頂部煙突口に挿入するようにしたものである。
The negative pressure dust removal device for emergency according to the present invention detects a negative pressure monitoring device for monitoring a negative pressure state in a work area where asbestos insulation or sprayed asbestos is removed, and a state in which the negative pressure monitoring device is approaching an atmospheric pressure. An alarm device that operates sometimes, and a negative pressure dust removing device body that operates when the negative pressure monitoring device detects a state approaching atmospheric pressure.
In addition, work areas are provided at the top and bottom of the chimney, an asbestos removal device is attached to the hanging device, the asbestos removal device is raised and lowered in the chimney, and asbestos insulation is applied with high-pressure water sprayed from the nozzle of the asbestos removal device. When removing, install a negative pressure dust removal device for emergency in the work area above or outside the chimney, and install a suction duct at the inlet of the negative pressure dust removal device for emergency. The opening of the duct is inserted into the top chimney.

本考案の非常時用負圧除塵装置は、アスベスト断熱材又は吹き付けアスベストを除去する作業区域を負圧に保つものであり、作業区域が大気圧に近づいた状態において自動で作動するように設定されたものである。これにより、煙突のドラフト(上昇気流)により上部の作業区域の気圧が上昇する場合や作業区域の吸気排気ができない状態になる場合等の非常時に迅速に対応でき、アスベスト粉塵の拡散を回避することができることから、アスベスト除去作業時の安全安心を確保できる。   The emergency negative pressure dust removal device of the present invention keeps the work area where asbestos insulation or sprayed asbestos is removed at a negative pressure and is set to operate automatically when the work area is close to atmospheric pressure. It is a thing. As a result, it is possible to respond quickly in an emergency such as when the air pressure in the upper work area rises due to the draft of the chimney (updraft) or when the intake and exhaust of the work area cannot be performed, and to avoid the diffusion of asbestos dust Therefore, safety and security during asbestos removal work can be secured.

本考案の非常時用負圧除塵装置を表わす図である。It is a figure showing the negative pressure dust removal apparatus for emergency of this invention.

本考案は、煙突のドラフト(上昇気流)による上部作業区域の気圧上昇の阻止及びアスベスト粉塵の拡散の回避を実現するものである。   The present invention realizes prevention of an increase in air pressure in the upper work area and avoiding the diffusion of asbestos dust due to the draft of the chimney.

本考案の非常時用負圧除塵装置の一例を図に基づいて説明する。図1は、本考案の非常時用負圧除塵装置を表わす図である。
煙突12の上部と下部に作業区域14、16を設け、ウインチ18に石綿除去装置20を取り付けて、煙突12内で石綿除去装置20を昇降させ、石綿除去装置20のノズルから噴射される高圧水でアスベスト断熱材22を除去する場合に、本考案の非常時用負圧除塵装置10は、煙突12の上部の作業区域14外に設置するものである(図1)。なお、非常時用負圧除塵装置10は、作業区域14内に設置してもよい。
石綿除去装置20は、ワイヤーを介してウインチ18に取り付けられ、煙突12内を昇降するものである。下部の作業区域16の煙突12には、除去されたアスベスト断熱材22を取り出す排出口24が形成されている。上部と下部の作業区域14、16は、煙突12を通じて連通しており、下部の作業区域16に設置される負圧除塵装置26により、作業区域14、16は負圧状態に保たれる。
An example of an emergency negative pressure dust removal apparatus of the present invention will be described with reference to the drawings. FIG. 1 is a diagram showing an emergency negative pressure dust removing device of the present invention.
Working areas 14 and 16 are provided at the upper and lower portions of the chimney 12, the asbestos removing device 20 is attached to the winch 18, the asbestos removing device 20 is moved up and down in the chimney 12, and the high pressure water sprayed from the nozzle of the asbestos removing device 20. When removing the asbestos heat insulating material 22, the emergency negative pressure dust removal apparatus 10 of the present invention is installed outside the work area 14 above the chimney 12 (FIG. 1). Note that the emergency negative pressure dust removal apparatus 10 may be installed in the work area 14.
The asbestos removal apparatus 20 is attached to the winch 18 via a wire and moves up and down in the chimney 12. The chimney 12 in the lower work area 16 is formed with a discharge port 24 for taking out the removed asbestos heat insulating material 22. The upper and lower work areas 14, 16 communicate with each other through the chimney 12, and the work areas 14, 16 are maintained in a negative pressure state by the negative pressure dust removing device 26 installed in the lower work area 16.

非常時用負圧除塵装置10は、煙突12の上部の作業区域14の負圧状態を検知する負圧監視装置28と、負圧監視装置28が大気圧へ近づいた状態を検知した時に作動する警報機30と、負圧監視装置28が大気圧へ近づいた状態を検知した時に作動する負圧除塵装置本体32とを備えるものである。また、図1において、負圧除塵装置本体32の吸気口には、吸引ダクト34が取り付けられている(図1)。
負圧監視装置28は、煙突12の上部の作業区域14の気圧が負圧状態を検知するものである。負圧除塵装置本体32は、同じ作業区域14に設置した負圧監視装置28が作業区域14の気圧が大気圧へ近づいた状態を検知した場合に作動するように設定されている。
なお、図1において、負圧雰囲気を取り込む負圧監視装置28の圧力取り込み口(圧力接続口)には、チューブ28aが取り付けられており、作業区域14の気圧を検知できるようになっている。
The emergency negative pressure dust removal device 10 operates when a negative pressure monitoring device 28 that detects a negative pressure state of the work area 14 above the chimney 12 and a state in which the negative pressure monitoring device 28 approaches an atmospheric pressure is detected. The alarm device 30 and a negative pressure dust removing device main body 32 that operates when the negative pressure monitoring device 28 detects a state in which the negative pressure monitoring device 28 is approaching atmospheric pressure are provided. Moreover, in FIG. 1, the suction duct 34 is attached to the inlet port of the negative pressure dust removal apparatus main body 32 (FIG. 1).
The negative pressure monitoring device 28 detects a negative pressure state in the work area 14 above the chimney 12. The negative pressure dust removing device main body 32 is set to operate when the negative pressure monitoring device 28 installed in the same work area 14 detects a state in which the atmospheric pressure in the work area 14 approaches the atmospheric pressure.
In FIG. 1, a tube 28 a is attached to the pressure intake port (pressure connection port) of the negative pressure monitoring device 28 that takes in the negative pressure atmosphere so that the atmospheric pressure in the work area 14 can be detected.

警報機(パトランプ)30は、アスベスト除去作業中に、負圧監視装置28が上部の作業区域14が大気圧へ近づいた状態を検知したと同時に点灯するように設定されている。これにより、図1の作業区域14の作業員は、非常時であることを知ることができ、即座に吸引ダクト34を頂部煙突口36に挿入することができる。
吸引ダクト34の開口部を頂部煙突口36に挿入することにより、煙突12の上昇気流による上部の作業区域14の気圧上昇を阻止することができ、作業区域14の負圧状態を回復させることができる。また、アスベスト粉塵38および水蒸気40の作業区域14への拡散を回避することができる。
The alarm (pat lamp) 30 is set to light up at the same time that the negative pressure monitoring device 28 detects that the upper work area 14 is approaching atmospheric pressure during the asbestos removal work. Thereby, the worker in the work area 14 of FIG. 1 can know that it is an emergency, and can immediately insert the suction duct 34 into the top chimney 36.
By inserting the opening of the suction duct 34 into the top chimney 36, an increase in air pressure in the upper work area 14 due to the rising airflow of the chimney 12 can be prevented, and the negative pressure state in the work area 14 can be restored. it can. Further, diffusion of asbestos dust 38 and water vapor 40 into the work area 14 can be avoided.

非常時用負圧除塵装置10を構成する負圧監視装置28、警報機30及び負圧除塵装置本体32の電源は、下部の作業区域16に設置する負圧除塵装置26の電源と異なるものを使用する。
また、負圧除塵装置本体32は、上部の作業区域14の頂部煙突口36に隣接する位置に設置され、吸引ダクト34を除く装置本体32は作業区域14の外部に配置する(図1)。
The power source of the negative pressure monitoring device 28, the alarm device 30 and the negative pressure dust removal device main body 32 constituting the emergency negative pressure dust removal device 10 is different from that of the negative pressure dust removal device 26 installed in the lower work area 16. use.
The negative pressure dust removing device main body 32 is installed at a position adjacent to the top chimney 36 of the upper work area 14, and the apparatus main body 32 excluding the suction duct 34 is disposed outside the work area 14 (FIG. 1).

吸引ダクト34は、負圧除塵装置本体32の吸気口に取り付ける。また、非常時(除去作業中に下部作業区域の負圧除塵装置が停電で突然停止したり、煙突内の断熱材が大量に剥落し煙突内が断熱材で塞がれることが起こったとき)以外は、取り外し、もしくは、負圧除塵装置本体32の吸気口に畳んで収容する。   The suction duct 34 is attached to the intake port of the negative pressure dust removing device main body 32. Also, in an emergency (when the negative pressure dust removal device in the lower work area suddenly stops due to a power failure during the removal work, or a large amount of the insulation in the chimney is peeled off and the chimney is blocked by the insulation) Other than the above, it is removed or folded into the intake port of the negative pressure dust removing device main body 32 and accommodated.

非常時用負圧除塵装置10による煙突12内のアスベスト粉塵38及び水蒸気40の吸気排気の後、上昇気流の原因を調査し、原因を解消する。下降気流を回復できた場合、負圧除塵装置本体32は自動的に停止する。   After the intake and exhaust of asbestos dust 38 and water vapor 40 in the chimney 12 by the emergency negative pressure dust removal device 10, the cause of the updraft is investigated and the cause is eliminated. When the descending airflow can be recovered, the negative pressure dust removing device main body 32 automatically stops.

上例においては、煙突の上部と下部に作業区域を設け、吊り下げ装置に石綿除去装置を取り付けて、煙突内で石綿除去装置を昇降させ、石綿除去装置のノズルから噴射される高圧水でアスベスト断熱材を除去する場合に煙突の上部の作業区域に、本考案の非常時用負圧除塵装置を設置する場合について説明したが、これに限るものではない。下部の作業区域や煙突以外の一般建築物内吹き付けアスベスト等の除去作業区域においても設置できるものである。
たとえば、図1において、下部の作業区域16に本考案の非常時用負圧除塵装置10を設置することにより、作業区域の吸気排気ができない状態になる非常時(たとえば、負圧除塵装置26の吸気フィルターが詰まったり、下部の作業区域16に設置される負圧除塵装置26が停電等により停止したとき)に、迅速に作業区域の吸気排気を行うことができ、作業区域16の負圧状態を回復させることができる。また、アスベスト粉塵の作業区域への拡散を回避することができる。
In the above example, working areas are provided at the top and bottom of the chimney, the asbestos removal device is attached to the suspension device, the asbestos removal device is raised and lowered in the chimney, and asbestos is injected with the high pressure water sprayed from the nozzle of the asbestos removal device. The case where the emergency negative pressure dust removal device of the present invention is installed in the work area above the chimney when the heat insulating material is removed has been described. However, the present invention is not limited to this. It can also be installed in the removal work areas such as sprayed asbestos in general buildings other than the lower work area and chimney.
For example, in FIG. 1, by installing the emergency negative pressure dust removal device 10 of the present invention in the lower work area 16, the work area cannot be sucked and exhausted (for example, the negative pressure dust removal device 26 of When the intake filter is clogged or the negative pressure dust removal device 26 installed in the lower work area 16 is stopped due to a power failure or the like, the work area can be quickly evacuated and exhausted. Can be recovered. In addition, diffusion of asbestos dust into the work area can be avoided.

10 非常時用負圧除塵装置
12 煙突
14、16 作業区域
18 ウインチ
20 石綿除去装置
22 アスベスト断熱材
28 負圧監視装置
30 警報機
32 負圧除塵装置本体
34 吸引ダクト
36 頂部煙突口
DESCRIPTION OF SYMBOLS 10 Negative pressure dust removal device for emergency 12 Chimney 14, 16 Work area 18 Winch 20 Asbestos removal device 22 Asbestos heat insulation material 28 Negative pressure monitoring device 30 Alarm device 32 Negative pressure dust removal device body 34 Suction duct 36 Top chimney

Claims (2)

アスベスト断熱材又は吹き付けアスベストを除去する作業区域の負圧状態を監視する負圧監視装置と、負圧監視装置が大気圧へ近づいた状態を検知した時に作動する警報機と、負圧監視装置が大気圧へ近づいた状態を検知した時に作動する負圧除塵装置本体とを備えることを特徴とする非常時用負圧除塵装置。 There is a negative pressure monitoring device that monitors the negative pressure state of the work area where asbestos insulation or sprayed asbestos is removed, an alarm that operates when the negative pressure monitoring device detects a state approaching atmospheric pressure, and a negative pressure monitoring device. An emergency negative pressure dust removal device comprising: a negative pressure dust removal device body that operates when a state approaching atmospheric pressure is detected. 煙突の上部と下部に作業区域を設け、吊り下げ装置に石綿除去装置を取り付けて、煙突内で石綿除去装置を昇降させ、石綿除去装置のノズルから噴射される高圧水でアスベスト断熱材を除去する場合に、煙突の上部の作業区域内又は外部に非常時用負圧除塵装置を設置し、非常時用負圧除塵装置の吸気口に吸引ダクトを設け、警報機が作動したとき、吸引ダクトの開口部を頂部煙突口に挿入することを特徴とする請求項1記載の非常時用負圧除塵装置。 Work areas are provided at the top and bottom of the chimney, the asbestos removal device is attached to the suspension device, the asbestos removal device is moved up and down in the chimney, and the asbestos insulation is removed with high-pressure water sprayed from the nozzle of the asbestos removal device. If a negative pressure dust removal device for emergency is installed in or outside the work area above the chimney, a suction duct is installed at the inlet of the negative pressure dust removal device for emergency, and the alarm is activated, The emergency negative pressure dust removing device according to claim 1, wherein the opening is inserted into the top chimney.
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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017106258A (en) * 2015-12-10 2017-06-15 株式会社藤林商会 Sludge water disposal system
JP2021156021A (en) * 2020-03-27 2021-10-07 株式会社マルホウ Asbestos removal method
JP2021172985A (en) * 2020-04-21 2021-11-01 株式会社マルホウ Asbestos recovery device and asbestos recovery system
CN114166409A (en) * 2021-11-15 2022-03-11 北京建筑大学 Grouting sleeve grouting pressure detection plug, grouting equipment and grouting method
JP7514520B2 (en) 2020-07-29 2024-07-11 日本トリート株式会社 Harmful substance dispersion prevention device and harmful substance dispersion prevention method

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017106258A (en) * 2015-12-10 2017-06-15 株式会社藤林商会 Sludge water disposal system
JP2021156021A (en) * 2020-03-27 2021-10-07 株式会社マルホウ Asbestos removal method
JP7490413B2 (en) 2020-03-27 2024-05-27 株式会社マルホウ Asbestos Removal Methods
JP2021172985A (en) * 2020-04-21 2021-11-01 株式会社マルホウ Asbestos recovery device and asbestos recovery system
JP7469129B2 (en) 2020-04-21 2024-04-16 株式会社マルホウ Asbestos recovery equipment and asbestos recovery system
JP7514520B2 (en) 2020-07-29 2024-07-11 日本トリート株式会社 Harmful substance dispersion prevention device and harmful substance dispersion prevention method
CN114166409A (en) * 2021-11-15 2022-03-11 北京建筑大学 Grouting sleeve grouting pressure detection plug, grouting equipment and grouting method

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