JP7156599B2 - Water curtain forming device - Google Patents

Water curtain forming device Download PDF

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Publication number
JP7156599B2
JP7156599B2 JP2018101442A JP2018101442A JP7156599B2 JP 7156599 B2 JP7156599 B2 JP 7156599B2 JP 2018101442 A JP2018101442 A JP 2018101442A JP 2018101442 A JP2018101442 A JP 2018101442A JP 7156599 B2 JP7156599 B2 JP 7156599B2
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Prior art keywords
nozzle
pipe
water
water curtain
passage
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JP2019205530A5 (en
JP2019205530A (en
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正樹 杉本
昭一 下世
雅浩 伊藤
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Kyoritsu Gokin Co Ltd
J Morita Corp
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Kyoritsu Gokin Co Ltd
J Morita Corp
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Priority to JP2018101442A priority Critical patent/JP7156599B2/en
Priority to TW108117258A priority patent/TWI798442B/en
Priority to CN201910433869.8A priority patent/CN110538397B/en
Publication of JP2019205530A publication Critical patent/JP2019205530A/en
Publication of JP2019205530A5 publication Critical patent/JP2019205530A5/ja
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    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C2/00—Fire prevention or containment
    • A62C2/06—Physical fire-barriers
    • A62C2/08—Water curtains
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C31/00—Delivery of fire-extinguishing material
    • A62C31/02—Nozzles specially adapted for fire-extinguishing
    • A62C31/05—Nozzles specially adapted for fire-extinguishing with two or more outlets
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C33/00—Hose accessories
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C33/00—Hose accessories
    • A62C33/06—Hose or pipe bridges
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L11/00—Hoses, i.e. flexible pipes
    • F16L11/04—Hoses, i.e. flexible pipes made of rubber or flexible plastics
    • F16L11/12—Hoses, i.e. flexible pipes made of rubber or flexible plastics with arrangements for particular purposes, e.g. specially profiled, with protecting layer, heated, electrically conducting

Description

本発明は、飛来する火の粉を消火水によって消火する水幕形成装置に関する。 The present invention relates to a water curtain forming device that extinguishes flying sparks with extinguishing water.

特許文献１では、通水路を形成するパイプと、パイプの一端に配置する受け金具と、パイプの他端に配置する差し金具と、パイプ内を流れる消火水を噴出させるノズル部とを備え、受け金具に第１の消防ホース側の差し金具を結合し、差し金具に第２の消防ホース側の受け金具を結合し、ノズル部から噴出させる消火水によって扇状の水幕を生成し、火災の消火、震災時の避難通路の確保、輻射熱の遮断などを行える装置を提案している。
ところで、２０１６年１２月２２日に発生した糸魚川市大規模火災では、強風にあおられた飛び火によって延焼拡大が問題となった。 In Patent Document 1, a pipe forming a water passage, a receiving fitting arranged at one end of the pipe, a fitting located at the other end of the pipe, and a nozzle portion for ejecting fire extinguishing water flowing in the pipe are provided. The first fire hose side fitting is connected to the metal fitting, the second fire hose side receiving metal fitting is connected to the metal fitting, and the fire extinguishing water jetted from the nozzle part creates a fan-shaped water screen to extinguish the fire. We are proposing a device that can secure evacuation passages in the event of an earthquake and block radiant heat.
By the way, in the large-scale fire that occurred in Itoigawa City on December 22, 2016, the spread of the fire became a problem due to flying sparks fanned by strong winds.

特開２０００－３１７００７号公報JP-A-2000-317007

特許文献１に記載のノズル部は扇状であるために、水幕の高さは低く、飛び火を消火することはできず、糸魚川市大規模火災のような延焼拡大に対しては十分な効果を発揮できない。 Since the nozzle portion described in Patent Document 1 is fan-shaped, the height of the water curtain is low and it is not possible to extinguish flying sparks. I can't do it.

本発明は、ノズル部から噴出させる消火水による水柱を高い位置まで形成し、高い位置で水幕を形成する水幕形成装置を提供することを目的とする。 SUMMARY OF THE INVENTION It is an object of the present invention to provide a water curtain forming device that forms a water column up to a high position by extinguishing water ejected from a nozzle portion and forms a water curtain at a high position.

請求項１記載の本発明の水幕形成装置は、通水路を形成するパイプ１０と、前記パイプ１０の一端に配置する受け金具２１と、前記パイプ１０の他端に配置する差し金具２２と、前記パイプ１０内を流れる消火水を噴出させるノズル部３０とを備え、前記受け金具２１に第１の消防ホース２ａの差し金具を結合し、前記差し金具２２に第２の消防ホース２ｂの受け金具を結合し、飛来する火の粉を、前記ノズル部３０から噴出させる前記消火水によって消火する水幕形成装置３であって、前記ノズル部３０として、第１ノズル部３０Ａと第２ノズル部３０Ｂとを有し、前記第１ノズル部３０Ａの第１仮想軸心３０Ｘと、前記第２ノズル部３０Ｂの第２仮想軸心３０Ｙとの角度を１５°以上で２０°以下の範囲とし、前記第１ノズル部３０Ａ及び第２ノズル部３０Ｂは、噴出口３１を一端に形成する第１ノズル通路３２と、前記第１ノズル通路３２の他端に連接する第２ノズル通路３３とを有し、前記第１ノズル通路３２を内径が一定の筒状に形成し、前記第２ノズル通路３３を、上流から下流に向けて内径を漸次縮小させてテーパー状に形成し、さらに、前記パイプ１０内の前記消火水を前記第１ノズル部３０Ａ及び前記第２ノズル部３０Ｂの前記第２ノズル通路３３に導く導出部５０を有し、前記導出部５０の上流側端部５１を、前記パイプ１０のパイプ仮想軸心１０Ｘに至らない範囲で前記パイプ１０の内周面よりも突出させ、前記導出部５０に、複数枚の整流板６１からなる整流部材６０を設け、前記整流部材６０は、前記整流板６１が軸部６２に放射状に取り付けられ、前記軸部６２の両端は、前記整流板６１よりも突出させて先細りの形状としたことを特徴とする。
請求項２記載の本発明は、請求項１に記載の水幕形成装置において、前記導出部５０の内径を前記第２ノズル通路３３の上流側内径以上としたことを特徴とする。
請求項３記載の本発明は、請求項１又は請求項２に記載の水幕形成装置において、前記第２ノズル通路３３のテーパー角度αを１５°以上で４５°以下の範囲としたことを特徴とする。
請求項４記載の本発明は、請求項１から請求項３のいずれか１項に記載の水幕形成装置において、前記噴出口３１を、前記ノズル部３０の端部３０ａから凹ませた位置に形成したことを特徴とする。
請求項５記載の本発明は、請求項１から請求項４のいずれか１項に記載の水幕形成装置において、設置時に前記噴出口３１が鉛直上方に向けた位置となる重量部４１を設けたことを特徴とする。 The apparatus for forming a water screen according to the first aspect of the present invention comprises a pipe 10 forming a water passage, a fitting 21 arranged at one end of the pipe 10, a fitting 22 arranged at the other end of the pipe 10, A nozzle portion 30 for ejecting fire extinguishing water flowing in the pipe 10 is provided, the fitting 21 is connected to the fitting of the first fire hose 2a, and the fitting 22 is the fitting of the second fire hose 2b. and extinguish flying sparks with the extinguishing water ejected from the nozzle portion 30, wherein the nozzle portion 30 includes a first nozzle portion 30A and a second nozzle portion 30B The angle between the first virtual axis 30X of the first nozzle portion 30A and the second virtual axis 30Y of the second nozzle portion 30B is set to be in the range of 15° or more and 20° or less, and the first nozzle The part 30A and the second nozzle part 30B have a first nozzle passage 32 forming the ejection port 31 at one end, and a second nozzle passage 33 connected to the other end of the first nozzle passage 32. The nozzle passage 32 is formed in a cylindrical shape with a constant inner diameter, the second nozzle passage 33 is formed in a tapered shape by gradually decreasing the inner diameter from upstream to downstream, and the fire extinguishing water in the pipe 10 is formed. to the second nozzle passages 33 of the first nozzle portion 30A and the second nozzle portion 30B, and the upstream end portion 51 of the lead-out portion 50 is connected to the pipe virtual axis center of the pipe 10 A rectifying member 60 including a plurality of rectifying plates 61 is provided in the lead-out portion 50 so as to protrude from the inner peripheral surface of the pipe 10 within a range not reaching 10X. It is characterized in that it is radially attached to the portion 62 , and both ends of the shaft portion 62 protrude beyond the current plate 61 to form a tapered shape .
According to a second aspect of the present invention, in the water curtain forming apparatus according to the first aspect , the inner diameter of the lead-out portion 50 is set equal to or larger than the upstream inner diameter of the second nozzle passage 33 .
According to a third aspect of the present invention, in the water screen forming apparatus according to the first or second aspect, the taper angle α of the second nozzle passage 33 is in the range of 15° or more and 45° or less. Characterized by
A fourth aspect of the present invention is directed to the water screen forming apparatus according to any one of the first to third aspects, wherein the jet nozzle 31 is recessed from the end portion 30a of the nozzle portion 30. characterized by forming
According to a fifth aspect of the present invention, in the water curtain forming apparatus according to any one of the first to fourth aspects, a weight portion 41 is provided so that the ejection port 31 faces vertically upward when installed. It is characterized by providing

本発明の水幕形成装置によれば、筒状の第１ノズル通路の上流にテーパー状の第２ノズル通路を形成することで、噴出口に向けて圧力を高めることができるとともに整流効果を生じるために、ノズル部から噴出させる消火水による水柱を高い位置まで形成することができ、高い位置で水幕を形成することができる。 According to the water curtain forming device of the present invention, by forming the tapered second nozzle passage upstream of the cylindrical first nozzle passage, it is possible to increase the pressure toward the ejection port and to produce a rectifying effect. Therefore, the water column can be formed up to a high position by the fire extinguishing water ejected from the nozzle portion, and a water screen can be formed at a high position.

本発明の一実施例による水幕形成装置の使用状態を示す概念図FIG. 1 is a conceptual diagram showing a usage state of a water curtain forming device according to an embodiment of the present invention; 同水幕形成装置の全体構成図Overall configuration diagram of the same water curtain forming device 同水幕形成装置に用いる部材の構成図Configuration diagram of members used in the same water curtain forming device 本実施例による水幕形成装置の効果確認実験を示す写真A photograph showing an effect confirmation experiment of the water screen forming device according to the present embodiment.

本発明の第１の実施の形態による水幕形成装置は、ノズル部が、噴出口を一端に形成する第１ノズル通路と、第１ノズル通路の他端に連接する第２ノズル通路とを有し、第１ノズル通路を内径が一定の筒状に形成し、第２ノズル通路を、上流から下流に向けて内径を漸次縮小させてテーパー状に形成したものである。本実施の形態によれば、筒状の第１ノズル通路の上流にテーパー状の第２ノズル通路を形成することで、噴出口に向けて圧力を高めることができるとともに整流効果を生じるために、ノズル部から噴出させる消火水による水柱を高い位置まで形成することができ、高い位置で水幕を形成することができる。 In the water curtain forming device according to the first embodiment of the present invention, the nozzle portion has a first nozzle passage that forms a spout at one end and a second nozzle passage that is connected to the other end of the first nozzle passage. The first nozzle passage is formed in a cylindrical shape with a constant inner diameter, and the second nozzle passage is formed in a tapered shape by gradually reducing the inner diameter from upstream to downstream. According to this embodiment, by forming the tapered second nozzle passage upstream of the cylindrical first nozzle passage, it is possible to increase the pressure toward the ejection port and to produce a rectifying effect. A water column can be formed up to a high position by fire-extinguishing water ejected from the nozzle, and a water curtain can be formed at a high position.

本発明の第２の実施の形態は、第１の実施の形態による水幕形成装置において、パイプ内の消火水を第２ノズル通路に導く導出部を有し、導出部の内径を第２ノズル通路の上流側内径以上としたものである。本実施の形態によれば、導出部によって更に整流効果を生じるために、更に水柱を高い位置まで形成することができる。 According to a second embodiment of the present invention, in the water screen forming apparatus according to the first embodiment, the water curtain forming apparatus has an outlet section for guiding the fire extinguishing water in the pipe to the second nozzle passage, and the inner diameter of the outlet section is set to the second nozzle passage. It is set to be equal to or larger than the upstream side inner diameter of the passage. According to this embodiment, the water column can be formed to a higher position in order to produce a further rectification effect by the lead-out portion.

本発明の第３の実施の形態は、第２の実施の形態による水幕形成装置において、導出部に、複数枚の整流板からなる整流部材を設けたものである。本実施の形態によれば、整流部材によって更に整流効果を生じるために、更に水柱を高い位置まで形成することができる。 According to a third embodiment of the present invention, in the water curtain forming apparatus according to the second embodiment, a rectifying member made up of a plurality of rectifying plates is provided in the lead-out portion. According to this embodiment, the water column can be formed to a higher position because the straightening member produces a further straightening effect.

本発明の第４の実施の形態は、第１から第３の実施の形態による水幕形成装置において、ノズル部として、第１ノズル部と第２ノズル部とを有し、第１ノズル部の第１仮想軸心と、第２ノズル部の第２仮想軸心との角度を１５°以上で２０°以下の範囲としたものである。本実施の形態によれば、水柱を高い位置まで形成することができるとともに、水幕の形成効果を高めることができる。 According to a fourth embodiment of the present invention, in the water curtain forming apparatuses according to the first to third embodiments, the nozzle section has a first nozzle section and a second nozzle section. The angle between the first imaginary axis and the second imaginary axis of the second nozzle part is in the range of 15° or more and 20° or less. According to this embodiment, the water column can be formed up to a high position, and the effect of forming the water curtain can be enhanced.

本発明の第５の実施の形態は、第１から第４の実施の形態による水幕形成装置において、第２ノズル通路のテーパー角度を１５°以上で４５°以下の範囲としたものである。本実施の形態によれば、噴出口に向けて圧力を高めることができるとともに整流効果を生じる。 According to a fifth embodiment of the present invention, in the water screen forming apparatus according to the first to fourth embodiments, the taper angle of the second nozzle passage is set to a range of 15° or more and 45° or less. According to the present embodiment, the pressure can be increased toward the ejection port, and a rectifying effect is produced.

本発明の第６の実施の形態は、第１から第５の実施の形態による水幕形成装置において、噴出口を、ノズル部の端部から凹ませた位置に形成したものである。本実施の形態によれば、使用時に噴出口に傷がつくことを防止でき、傷によって水柱が割れることを防止できる。 According to a sixth embodiment of the present invention, in the water curtain forming apparatuses according to the first to fifth embodiments, the jet outlet is formed at a position recessed from the end of the nozzle section. According to this embodiment, the spout can be prevented from being damaged during use, and the water column can be prevented from cracking due to the damage.

本発明の第７の実施の形態は、第２又は第３の実施の形態による水幕形成装置において、導出部の上流側端部を、パイプの内周面よりも突出させたものである。本実施の形態によれば、パイプ内を流れる消火水の流れを変えることでパイプ内への流速の影響を少なくして導出部の圧力を高めることで水柱高さを確保できるとともに、複数の水幕形成装置を消防ホースに直列に接続して用いる場合には、それぞれの水幕形成装置での水柱高さを均一にすることができる。 According to a seventh embodiment of the present invention, in the water curtain forming apparatus according to the second or third embodiment, the upstream end of the lead-out portion protrudes from the inner peripheral surface of the pipe. According to the present embodiment, by changing the flow of fire extinguishing water flowing in the pipe, the influence of the flow velocity into the pipe is reduced and the pressure at the lead-out portion is increased, thereby ensuring the height of the water column, When the curtain forming device is connected in series to the fire hose and used, the height of the water column in each water curtain forming device can be made uniform.

本発明の第８の実施の形態は、第７の実施の形態による水幕形成装置において、上流側端部を、パイプのパイプ仮想軸心に至らない範囲で突出させたものである。本実施の形態によれば、パイプ内での圧損を少なくすることで、特に複数の水幕形成装置を消防ホースに直列に接続して用いる場合であっても、圧損による水柱高さの低下を防止できる。 According to an eighth embodiment of the present invention, in the water screen forming apparatus according to the seventh embodiment, the upstream end portion is projected within a range not reaching the virtual axis of the pipe. According to the present embodiment, by reducing the pressure loss in the pipe, even when a plurality of water curtain forming devices are connected in series to a fire hose and used, the drop in the height of the water column due to the pressure loss can be prevented. can be prevented.

本発明の第９の実施の形態は、第１から第８の実施の形態による水幕形成装置において、設置時に噴出口が鉛直上方に向けた位置となる重量部を設けたものである。本実施の形態によれば、使用時の設置作業を迅速に行うことができる。 According to a ninth embodiment of the present invention, in the water curtain forming apparatuses according to the first to eighth embodiments, a weight section is provided so that the ejection port faces vertically upward when installed. According to this embodiment, the installation work can be quickly performed at the time of use.

以下本発明の一実施例による水幕形成装置について説明する。
図１は本実施例による水幕形成装置の使用状態を示す概念図、図２は同水幕形成装置の全体構成図、図３は同水幕形成装置に用いる部材の構成図である。 A water screen forming apparatus according to an embodiment of the present invention will be described below.
FIG. 1 is a conceptual diagram showing how the water curtain forming device according to this embodiment is used, FIG. 2 is a diagram showing the overall configuration of the water curtain forming device, and FIG. 3 is a configuration diagram of members used in the same water curtain forming device.

図１に示すように、ポンプ車１に接続した消防ホース２に水幕形成装置３を接続し、水幕形成装置３には更に他の消防ホース２を接続し、他の消防ホース２に更に他の水幕形成装置３を接続して用いる。 As shown in FIG. 1, a water curtain forming device 3 is connected to a fire hose 2 connected to a pump vehicle 1, another fire hose 2 is connected to the water curtain forming device 3, and another fire hose 2 is further connected to the water curtain forming device 3. Another water curtain forming device 3 is connected and used.

図２（ａ）は同水幕形成装置の一部を透視した外観斜視図、図２（ｂ）は消火水の流れ方向の断面図、図２（ｃ）は消火水の流れに垂直な方向の断面図である。 Fig. 2(a) is an external perspective view of a part of the same water curtain forming device, Fig. 2(b) is a cross-sectional view in the flow direction of fire extinguishing water, and Fig. 2(c) is a direction perpendicular to the flow of fire extinguishing water. is a cross-sectional view of.

水幕形成装置３は、通水路を形成するパイプ１０と、パイプ１０の一端に配置する受け金具２１と、パイプ１０の他端に配置する差し金具２２と、パイプ１０内を流れる消火水を噴出させるノズル部３０とを備えている。
水幕形成装置３は、受け金具２１には第１の消防ホース２ａ（図１参照）の差し金具を結合し、差し金具２２には第２の消防ホース２ｂ（図１参照）の受け金具を結合し、ノズル部３０から噴出させる消火水によって火の粉を消火する。
ノズル部３０は、噴出口３１を形成している。
パイプ１０及びノズル部３０は、筐体４０で覆われ、筐体４０には、設置時に噴出口３１が鉛直上方に向けた位置となる重量部４１を設けている。重量部４１を設けることで、使用時の設置作業を迅速に行うことができる。 The water curtain forming device 3 includes a pipe 10 forming a water passage, a receiving fitting 21 arranged at one end of the pipe 10, a fitting 22 arranged at the other end of the pipe 10, and ejecting fire extinguishing water flowing inside the pipe 10. and a nozzle portion 30 for
In the water curtain forming device 3, the fitting 21 is connected to the fitting of the first fire hose 2a (see FIG. 1), and the fitting 22 is fitted to the fitting of the second fire hose 2b (see FIG. 1). The sparks are extinguished by fire extinguishing water ejected from the nozzle portion 30. FIG.
The nozzle portion 30 forms a jet port 31 .
The pipe 10 and the nozzle section 30 are covered with a housing 40, and the housing 40 is provided with a weight section 41 at which the ejection port 31 faces vertically upward when installed. By providing the weight part 41, the installation work at the time of use can be performed quickly.

図３（ａ）はノズル部、導出部、及び整流部材を示す構成図、図３（ｂ）はノズル部の噴出口側の平面図、図３（ｃ）はノズル部の断面図、図３（ｄ）は整流部材の上面図、図３（ｅ）は整流部材の側面図である。 FIG. 3(a) is a configuration diagram showing the nozzle portion, the lead-out portion, and the rectifying member, FIG. 3(b) is a plan view of the ejection port side of the nozzle portion, FIG. 3(c) is a cross-sectional view of the nozzle portion, and FIG. (d) is a top view of the rectifying member, and FIG. 3(e) is a side view of the rectifying member.

ノズル部３０は、噴出口３１を一端に形成する第１ノズル通路３２と、第１ノズル通路３２の他端に連接する第２ノズル通路３３とを有している。
噴出口３１は、ノズル部３０の端部３０ａから凹ませた位置に形成している。このように噴出口３１を端部３０ａから凹ませた位置に形成することで、使用時に噴出口３１に傷がつくことを防止でき、傷によって水柱が割れることを防止できる。
第１ノズル通路３２は内径が一定の筒状に形成し、第２ノズル通路３３は、上流から下流に向けて内径を漸次縮小させてテーパー状に形成している。
第２ノズル通路３３のテーパー角度αは、１５°以上で４５°以下の範囲とすることが好ましい。
このように、筒状の第１ノズル通路３２の上流にテーパー状の第２ノズル通路３３を形成することで、噴出口３１に向けて圧力を高めることができるとともに整流効果を生じるために、ノズル部３０から噴出させる消火水による水柱を高い位置まで形成することができ、高い位置で水幕を形成することができる。 The nozzle portion 30 has a first nozzle passage 32 forming the ejection port 31 at one end, and a second nozzle passage 33 connected to the other end of the first nozzle passage 32 .
The ejection port 31 is formed at a position recessed from the end portion 30 a of the nozzle portion 30 . By forming the ejection port 31 at a position recessed from the end portion 30a in this way, it is possible to prevent the ejection port 31 from being damaged during use, and to prevent the water column from cracking due to the damage.
The first nozzle passage 32 is formed in a cylindrical shape with a constant inner diameter, and the second nozzle passage 33 is formed in a tapered shape by gradually decreasing the inner diameter from upstream to downstream.
The taper angle α of the second nozzle passage 33 is preferably in the range of 15° or more and 45° or less.
Thus, by forming the tapered second nozzle passage 33 upstream of the cylindrical first nozzle passage 32, the pressure toward the ejection port 31 can be increased and a rectification effect can be produced. A water column can be formed up to a high position by fire extinguishing water jetted from the part 30, and a water screen can be formed at a high position.

パイプ１０内の消火水を第２ノズル通路３３に導く導出部５０は、内径を第２ノズル通路３３の上流側内径以上としている。このような導出部５０を備えることによって更に整流効果を生じるために、更に水柱を高い位置まで形成することができる。なお、導出口５０を備えることなく、第２ノズル通路３３の上流側をパイプ１０内に突出させてもよい。 The lead-out portion 50 that guides the fire extinguishing water in the pipe 10 to the second nozzle passage 33 has an inner diameter equal to or larger than the upstream inner diameter of the second nozzle passage 33 . By providing such a lead-out portion 50, the water column can be formed to a higher position in order to produce a further rectifying effect. Note that the upstream side of the second nozzle passage 33 may protrude into the pipe 10 without providing the outlet 50 .

導出部５０には、整流部材６０を設けている。整流部材６０は、複数枚の整流板６１を軸部６２に放射状に取り付けている。消火水は整流板６１の間を、軸部６２の方向に流れる。軸部６２の両端は、整流板６１よりも突出させ、先細りの形状としている。このような、整流部材６０を導出部５０に配置することで、更に整流効果を生じ、更に水柱を高い位置まで形成することができる。 A straightening member 60 is provided in the lead-out portion 50 . The rectifying member 60 has a plurality of rectifying plates 61 radially attached to a shaft portion 62 . The fire extinguishing water flows between the current plates 61 in the direction of the shaft portion 62 . Both ends of the shaft portion 62 protrude beyond the current plate 61 and have a tapered shape. By arranging such a straightening member 60 in the lead-out portion 50, a further straightening effect can be produced and the water column can be formed to a higher position.

本実施例では、ノズル部３０として、第１ノズル部３０Ａと第２ノズル部３０Ｂとを有している。本実施例のように、第１ノズル部３０Ａと第２ノズル部３０Ｂとでノズル部３０を構成する場合には、第１ノズル部３０Ａの第１仮想軸心３０Ｘと、第２ノズル部３０Ｂの第２仮想軸心３０Ｙとの角度βを１５°以上で２０°以下の範囲とすることが好ましい。このように第１ノズル部３０Ａと第２ノズル部３０Ｂとでノズル部３０を構成し、第１仮想軸心３０Ｘと第２仮想軸心３０Ｙとの角度βを１５°以上で２０°以下の範囲とすることで、水柱を高い位置まで形成することができるとともに、水幕の形成効果を高めることができる。
なお、ノズル部３０として、第３ノズル部を更に設けてもよい。第３のノズル部を更に設ける場合には、第３ノズル部の第３仮想軸心を導出部５０の仮想軸心と一致させることで、第３ノズル部の噴出口を鉛直上方に向けることが好ましい。 In this embodiment, the nozzle section 30 has a first nozzle section 30A and a second nozzle section 30B. As in the present embodiment, when the nozzle portion 30 is composed of the first nozzle portion 30A and the second nozzle portion 30B, the first virtual axis 30X of the first nozzle portion 30A and the second nozzle portion 30B The angle β with the second virtual axis 30Y is preferably in the range of 15° or more and 20° or less. Thus, the nozzle portion 30 is configured by the first nozzle portion 30A and the second nozzle portion 30B, and the angle β between the first virtual axis 30X and the second virtual axis 30Y is in the range of 15° or more and 20° or less. By doing so, the water column can be formed up to a high position, and the effect of forming the water curtain can be enhanced.
A third nozzle portion may be further provided as the nozzle portion 30 . When a third nozzle portion is further provided, the ejection port of the third nozzle portion can be directed vertically upward by aligning the third imaginary axis of the third nozzle portion with the imaginary axis of the lead-out portion 50. preferable.

導出部５０の上流側端部５１は、図２（ｂ）及び図２（ｃ）に示すように、パイプ１０の内周面よりも突出させることが好ましい。導出部５０の上流側端部５１をパイプ１０の内周面よりも突出させることで、パイプ１０内を流れる消火水の流れを変え、パイプ１０内の流速の影響を少なくして導出部５０の圧力を高めることで水柱高さを確保できるとともに、図１に示すように、複数の水幕形成装置３を消防ホース２に直列に接続して用いる場合には、それぞれの水幕形成装置３での水柱高さを均一にすることができる。
なお、上流側端部５１は、パイプ１０のパイプ仮想軸心１０Ｘに至らない範囲で突出させることが好ましい。上流側端部５１を、パイプ仮想軸心１０Ｘに至らない範囲で突出させることで、パイプ１０内での圧損を少なくし、特に複数の水幕形成装置３を消防ホース２に直列に接続して用いる場合であっても、圧損による水柱高さの低下を防止できる。 The upstream end 51 of the lead-out portion 50 preferably protrudes from the inner peripheral surface of the pipe 10 as shown in FIGS. 2(b) and 2(c). By protruding the upstream end 51 of the lead-out part 50 from the inner peripheral surface of the pipe 10, the flow of fire extinguishing water flowing in the pipe 10 is changed, the influence of the flow velocity in the pipe 10 is reduced, and the lead-out part 50 By increasing the pressure, the height of the water column can be ensured, and as shown in FIG. can make the height of the water column uniform.
It is preferable that the upstream end portion 51 protrude within a range not reaching the virtual pipe axis 10X of the pipe 10 . By protruding the upstream end 51 within a range not reaching the pipe virtual axis 10X, the pressure loss in the pipe 10 is reduced, and in particular, the plurality of water curtain forming devices 3 are connected in series to the fire hose 2. Even if it is used, it is possible to prevent the height of the water column from lowering due to pressure loss.

図４は、本実施例による水幕形成装置の効果確認実験を示す写真である。
ポンプ車１からは、１．６ＭＰａ、１６００Ｌ／ｍｉｎで送水し、図１に示すように、ポンプ車１に接続した消防ホース２を２０ｍ、他の消防ホース２を５ｍとして、３１個の水幕形成装置３を接続した。１つの水幕形成装置３で噴出される消火水は５０Ｌ／ｍｉｎとしている。
無風状態では、水幕高さは１２ｍから１３ｍ、水幕幅は６ｍから８ｍであった。 FIG. 4 is a photograph showing an experiment to confirm the effect of the water curtain forming device according to this embodiment.
From the pump car 1, water is sent at 1.6 MPa and 1600 L / min, and as shown in FIG. A forming device 3 was connected. Fire extinguishing water ejected by one water curtain forming device 3 is set to 50 L/min.
In no wind conditions, the height of the water curtain was 12m to 13m, and the width of the water curtain was 6m to 8m.

本発明によれば、飛び火による延焼拡大を有効に防止できる。 According to the present invention, it is possible to effectively prevent the spread of fire due to flying sparks.

１ ポンプ車
２ 消防ホース
２ａ 第１の消防ホース
２ｂ 第２の消防ホース
３ 水幕形成装置
１０ パイプ
１０Ｘ パイプ仮想軸心
２１ 受け金具
２２ 差し金具
３０ ノズル部
３０ａ 端部
３０Ａ 第１ノズル部
３０Ｂ 第２ノズル部
３０Ｘ 第１仮想軸心
３０Ｙ 第２仮想軸心
３１ 噴出口
３２ 第１ノズル通路
３３ 第２ノズル通路
４０ 筐体
４１ 重量部
５０ 導出部
５１ 上流側端部
６０ 整流部材
６１ 整流板
６２ 軸部
α テーパー角度
β 角度 1 pump truck 2 fire hose 2a first fire hose 2b second fire hose 3 water curtain forming device 10 pipe 10X pipe virtual axis 21 receiving metal fitting 22 fitting 30 nozzle part 30a end part 30A first nozzle part 30B second second Nozzle part 30X First imaginary axis 30Y Second imaginary axis 31 Jet port 32 First nozzle passage 33 Second nozzle passage 40 Case 41 Weight part 50 Derivation part 51 Upstream end 60 Straightening member 61 Straightening plate 62 Shaft α taper angle β angle

Claims (5)

通水路を形成するパイプと、
前記パイプの一端に配置する受け金具と、
前記パイプの他端に配置する差し金具と、
前記パイプ内を流れる消火水を噴出させるノズル部と
を備え、
前記受け金具に第１の消防ホースの差し金具を結合し、
前記差し金具に第２の消防ホースの受け金具を結合し、
飛来する火の粉を、前記ノズル部から噴出させる前記消火水によって消火する水幕形成装置であって、
前記ノズル部として、第１ノズル部と第２ノズル部とを有し、
前記第１ノズル部の第１仮想軸心と、前記第２ノズル部の第２仮想軸心との角度を１５°以上で２０°以下の範囲とし、
前記第１ノズル部及び第２ノズル部は、
噴出口を一端に形成する第１ノズル通路と、
前記第１ノズル通路の他端に連接する第２ノズル通路と
を有し、
前記第１ノズル通路を内径が一定の筒状に形成し、
前記第２ノズル通路を、上流から下流に向けて内径を漸次縮小させてテーパー状に形成し、
さらに、前記パイプ内の前記消火水を前記第１ノズル部及び前記第２ノズル部の前記第２ノズル通路に導く導出部を有し、
前記導出部の上流側端部を、前記パイプのパイプ仮想軸心に至らない範囲で前記パイプの内周面よりも突出させ、
前記導出部に、複数枚の整流板からなる整流部材を設け、
前記整流部材は、前記整流板が軸部に放射状に取り付けられ、
前記軸部の両端は、前記整流板よりも突出させて先細りの形状とした
ことを特徴とする水幕形成装置。 a pipe forming a water conduit;
a receiving fitting arranged at one end of the pipe;
a fitting arranged at the other end of the pipe;
a nozzle part for ejecting fire extinguishing water flowing in the pipe,
connecting the fitting of the first fire hose to the receiving fitting;
connecting a receiving fitting of a second fire hose to the fitting;
A water screen forming device that extinguishes flying sparks with the extinguishing water that is ejected from the nozzle,
The nozzle portion has a first nozzle portion and a second nozzle portion,
setting the angle between the first virtual axis of the first nozzle portion and the second virtual axis of the second nozzle portion to be in the range of 15° or more and 20° or less;
The first nozzle part and the second nozzle part are
a first nozzle passage having an ejection port formed at one end;
a second nozzle passage connected to the other end of the first nozzle passage;
forming the first nozzle passage in a cylindrical shape with a constant inner diameter;
forming the second nozzle passage in a tapered shape by gradually reducing the inner diameter from upstream to downstream ;
Further, a lead-out portion for guiding the fire extinguishing water in the pipe to the second nozzle passages of the first nozzle portion and the second nozzle portion,
causing the upstream end of the lead-out portion to protrude from the inner peripheral surface of the pipe within a range not reaching the pipe virtual axis of the pipe;
A rectifying member composed of a plurality of rectifying plates is provided in the lead-out portion,
The rectifying member has the rectifying plate radially attached to the shaft,
A water curtain forming device , wherein both ends of the shaft portion are tapered by protruding from the current plate . 前記導出部の内径を前記第２ノズル通路の上流側内径以上とした
ことを特徴とする請求項１に記載の水幕形成装置。 2. A water curtain forming apparatus according to claim 1, wherein the inner diameter of said lead-out portion is equal to or larger than the upstream inner diameter of said second nozzle passage. 前記第２ノズル通路のテーパー角度を１５°以上で４５°以下の範囲とした
ことを特徴とする請求項１又は請求項２に記載の水幕形成装置。 3. A water curtain forming apparatus according to claim 1 , wherein the taper angle of said second nozzle passage is in the range of 15[deg.] or more and 45[deg.] or less. 前記噴出口を、前記ノズル部の端部から凹ませた位置に形成した
ことを特徴とする請求項１から請求項３のいずれか１項に記載の水幕形成装置。 4. The water curtain forming device according to any one of claims 1 to 3 , wherein the jet nozzle is formed at a position recessed from the end of the nozzle section. 設置時に前記噴出口が鉛直上方に向けた位置となる重量部を設けた
ことを特徴とする請求項１から請求項４のいずれか１項に記載の水幕形成装置。 5. The water curtain forming apparatus according to claim 1 , further comprising a weight portion that directs the jet port vertically upward when installed.
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