【０００１】
【発明の属する技術分野】
本発明は消防用の送水管として一般的に使用される消防用ホースや、建築物に設置されて消防用ホースと連結する金属管等の送水用連結硬質管の耐圧試験に用いる消防用送水管耐圧試験機に関する。
【０００２】
【従来の技術】
従来、消火や延焼防止等の消防用に用いるフレキシブルな送水管として消防用ホースを使用している。しかし、消防用ホースは使用や年月の経過と共に損傷し劣化する等して、特にホースの接続金具を備えた端末部が使用に耐えられなくなってくる。例えば、漏水については屋内消火専用ホースであっても、製造から６〜１０年後の漏水率は８％、１０〜１５年後は３１％、１６〜２０年後は６２％となり、１０年以上経過すると、急激に漏水率が増加していく。そこで、１０年以上経過した消防用ホースについては単に端末部の外観等を見て使用に適するか判断するだけでなく、消防法で規定された耐圧試験を行う必要がある。
【０００３】
このような消防用送水管耐圧試験機として、手動式ポンプを備えた試験機を用いている。そして、その試験機には耐圧試験対象となる消防用ホースの端末部内に給水するため、そのホースの端末部に備えた接続具と結合・分離自在の接続具を備えた耐圧試験用給水部とホースの端末部近傍を押えて閉じるホース押え機構とを備えている。
【０００４】
このホース押え機構は例えば図９に示すようなほぼ垂直方向に配設し、耐圧試験時に消防用ホース１の端末部付近をその外面に沿わせて配置する平板状のホース受板２と、そのホース受板２の外面から少し離して設置し、ホース１を外側から押える若干弧状に屈曲したホース押え板３の外面中央付近に、軸棒４をほぼ水平方向に配置して固定したホース押え具５と、そのホース押え具５の軸棒４を受ける軸棒装着脱用開口付き軸受穴６をホース受板２の外側中央付近に配設し、ホース押え板３を回動可能に支えるホース押え具支持台７とからなる。なお、ホース受板２とホース押え板３との間隔は、軸棒４の付近より上方では平らにつぶれたホース１の厚みとほぼ等しくし、そのホース押え板３の上端部のみを若干外側に広げておくのに対し、軸棒４の下方では順次下に行く程広げるようにする。
【０００５】
そして、耐圧試験時には先にホース押え具５をその支持台７から外しておき、消防用ホース１の端末部に備えた接続具を耐圧試験用給水部に備えた接続具と結合した後、ホース１の端末部付近をホース受板２の外面に沿わせて配置する。すると、外しておいたホース押え具５の軸棒４を支持台７の軸受穴６に装着することによって、ホース１の端末部近傍をホース受板２とホース押え板３の上部とで挟持し、ホースの端末部近傍を閉鎖してホース端末部を他のホース部分から仕切ることができる。そこで、ポンプを手動して、耐圧試験用給水部内に設けた給水口より加圧水をホース１の端末部内へ供給し、そのホース端末部に水８を満たして行く。
【０００６】
その際、ホース１の端末部に水８が満たされてふくらんで行くと、軸棒４を中心にしてホース押え板３が回転し、その下部が矢印方向に移動して下方程ホース受板２との間隔が開いて行くのに対し、上部は反対の矢印方向に移動し、上端部との屈曲箇所付近が最も狭まって行く。すると、ホース端末部に水８を満たして徐々に加圧し、規定の圧力を一定時間加える耐圧試験によって、ホース端末部からの漏水と外観の状態を観察することにより、ホース１が使用に適するか判定できる。
【０００７】
【発明が解決しようとする課題】
しかしながら、耐圧試験対象の消防用ホース１は製造から１０年以上経過しているので、当然ホース１が硬化しているため、平たくつぶれ難く、特に古いホースはゴムを内張りしてあるため肉厚であり、つぶれたホース１の両側部内に穴が夫々残ってしまう。しかも、ホース押え板３が平面板であるため、どうしても押え圧力が弱い。それ故、耐圧試験対象となる消防用ホース１に給水しても、いつまでもホース１の端末部から他のホース部分へ水が抜け易くふくらみ難いので、満水して規定圧力を加えるまでに時間が長くかかる。
【０００８】
本発明はこのような従来の問題点に着目してなされたものであり、耐圧試験対象の消防用送水管を短時間で満水して規定圧力を加えることにより、耐圧試験時間を短縮化できるホース押え機構を備えた消防用送水管耐圧試験機を提供することを目的とする。
【０００９】
【課題を解決するための手段】
上記目的を達成するために、本発明による消防用送水管耐圧試験機には耐圧試験時に消防用ホースの端末部近傍を押え閉鎖して他のホース部分から仕切るホース押え機構を設ける。そして、上記ホース押え機構を、大略Ｌ字状に屈曲した平板体の一方の板部をほぼ垂直方向に配設し、他方の板部をほぼ水平方向に配置して前方に突設し、耐圧試験時にホースの端末部付近をその屈曲部内側面に沿わせて配置するホース受板と、そのホース受板の屈曲部内側面から少し離して設置し、ホースを外側から押えるホース押え丸棒の所定位置に挿通用の穴を夫々設け、その各挿通穴につぶれたホースの幅より間隔を広くしてほぼ平行に配置した２本の支持棒を挿通し、その両支持棒の各一端側の対応部分に軸棒を固着して、そのホース押え丸棒と軸棒とを所定距離離してほぼ平行に配置し、更に両支持棒の各他端部に螺部を設けてナットを夫々嵌めたホース押え具と、そのホース押え具の軸棒を受ける軸棒装着脱用開口付き軸受穴を夫々ホース受板の屈曲部外側付近の上方に、つぶれたホースの幅より間隔を広く、つぶれたホースの厚みより高く配設し、ホース押え具を回動可能に支える２個の台部を備えたホース押え具支持台とから構成する。
【００１０】
又、本願発明による消防用送水管耐圧試験機には耐圧試験対象となる消防用ホースの端末部に備えた接続具と結合・分離自在の接続具を備えた耐圧試験用給水部を設ける。そして、上記耐圧試験用給水部内に、ホース端末部内へ給水する口径の大きな給水口とホース端末部内の空気を水と一緒に吐き出す口径の小さな吐出口とを設ける。
【００１１】
又、本願発明による消防用送水管耐圧試験機は建築物に設置し、先端にホースの端末部に備えた接続具と結合・分離自在の接続具を備えた送水用連結硬質管を耐圧試験対象とする。そして、上記送水用連結硬質管を短時間で満水にできる送水用電動ポンプと、その送水用連結硬質管の満水後に規定の耐圧試験用圧力を加える加圧用電動ポンプとを備え、更にその送水用連結硬質管の基端に備えた接続具と結合・分離自在の接続具を二又管の一端に備え、その二又管の他の一端に送水用電動ポンプと接続する送水用ホースとの接続口を設け、更に他の一端に排水用ホースとの接続口を設け、その二又管の分岐個所と送水用ホース接続口との間に送水用バルブを備え、更に二又管の分岐箇所と排水用ホース接続口との間に加圧用電動ポンプと接続する加圧用ホースとの接続口を設け、その加圧用ホース接続口と排水用ホース接続口の間に排水バルブを備えたバルブ付き接続切替ユニットを用いる。
【００１２】
【発明の実施の形態】
以下、添付の図１〜８を参照して、本発明の実施の形態を説明する。
図１は本発明を適用した自動式消防用送水管耐圧試験機の正面図、図２はその右側面図、及び図３はその背面図である。この自動式消防用送水管耐圧試験機１０はその機枠を前面上部に広い開口部１１を設けた筐体１２にする。そして、筐体１２の下部前側に下方に弧状に突出する台用支持棒１３を設け、その下部後側に車輪１４（１４ａ、１４ｂ）を備え付ける。又、筐体１２の上部後側に上方に弧状に突出するハンドル１５を設ける。すると、ハンドル１５を持って試験機１を床の上等で自在に移動し、立てておくことができる。
【００１３】
又、筐体１２はその底壁１６を水平にし、前後壁１７、１８と左右側壁１９，２０を垂直にする。但し、筐体１２の前面下部に相当する前壁１７の上部は後退させて屈曲した傾斜壁にし、そこをパネル部２１にする。又、筐体１２の内部に前後に仕切る仕切壁２２をその内部空間のほぼ中央に設ける。但し、前後仕切壁２２の上部２３は前方へ屈曲させて突出する。その際、仕切壁上部２３の上端寄り部分を垂直にし、それより下方の部分を傾斜させる。
【００１４】
そして、前後仕切壁２２の中央部２４を垂直にし、下部２５を前方へ屈曲させて突出する。その際、下部２５の中央部２４寄り部分を水平にしそれより下方の部分を垂直にする。又、筐体１２の前後仕切壁２２より後側空間内を上下に仕切る仕切壁２６をその中央より少し下側に水平に設ける。なお、筐体１２の上壁２７はその前側部を少し上方に突出させて上面を平らにした台部２８にし、それより後側を少し傾斜させて、後方に行く程下げるようにする。
【００１５】
このように仕切った筐体１２の前側上部を耐圧試験時に対象となる消防用ホースの端末部付近を装着するホース装着室２９にし、その下部を耐圧試験時に使用する給水用の水槽３０にする。又、筐体１２の後側上部を送水用電動ポンプ３１を設置する室３２にし、その下部を加圧用電動ポンプ３３を設置する室３４にする。そして、筐体１２の後壁１８を形成する送水用電動ポンプ設置室３２の蓋部３５は例えば下端を軸支して開閉自在にし、加圧用電動ポンプ設置室３４の蓋部３６は例えば４隅等をねじ止めすることにより装着脱可能にする。なお、送水用及び加圧用の両電動ポンプ３１、３３の電源を１００Ｖの商用電源にすると、試験機１を様々な場所で使用し易く、建物内等において空気を汚すことなく好ましい。
【００１６】
このホース装着室２９にはその最上部付近に耐圧試験時にホースの端末部近傍を押え閉鎖して他のホース部分から仕切るホース押え機構４０（４０ａ、４０ｂ）を左右に少し離し並べて設置する。そして、各ホース押え機構４０をいずれもホースの端末部付近を受けるホース受板４１と、そのホースの端末部近傍を押えるホース押え具４２と、そのホース押え具４２を支持するホース押え具支持台４３とから構成する。その際、そのホース受板４１は図４に示すように大略Ｌ字状に屈曲した平板体の一方の板部４４をほぼ垂直方向に配設し、その垂直板部４４の上端中央部から他方の板部４５をほぼ水平方向に配置して前方に突設する。なお、水平板部４５の幅はつぶれたホースの幅より広くし、その先端部付近を前方に持ち上げ少し傾斜させる。
【００１７】
又、ホース押え具４２は図５に示すような所定の長さを有し、その両端部付近に挿通用の穴４６（４６ａ、４６ｂ）を夫々設けたホース押え丸棒４７と、そのホース押え丸棒４７を支持する支持具４８との組立体にする。この支持具４８はつぶれたホースの幅より間隔を広くしてほぼ平行に配置した２本の支持棒４９（４９ａ、４９ｂ）を有し、その両支持棒４９をホース押え丸棒４７の各挿通穴４６に夫々挿通して用いる。
【００１８】
そして、両支持棒４９にはその各一端側の対応部分に軸棒５０の両端を夫々固着し、更にその各一端を補強棒５１で結合して、その軸棒５０とホース押え丸棒４７とを所定距離離してほぼ平行に配置し、その両支持棒４９の各他端部に螺部５２（５２ａ、５２ｂ）を夫々設け、その両螺部５２に軸棒５０とホース押え丸棒４７との間隔を任意に決定するノブナット５３（５３ａ、５３ｂ）を夫々嵌め、更にその各他端に止めナット５４（５４ａ、５４ｂ）を夫々備え付ける。なお、ホース押え丸棒４７と各ノブナット５３、各ノブナット５３と止めナット５４との間にはワッシャ５５を夫々介在する。
【００１９】
又、ホース押え具支持台４３はホース押え具４２の軸棒５０を受ける軸棒装着脱用開口付き軸受穴５６（５６ａ、５６ｂ）を上部に夫々設けた台部例えば台板５７（５７ａ、５７ｂ）をつぶれたホースの幅より広く離し、その両台板５７の後側底部を水平に配置した底板５８で連結して、両軸受穴５６をつぶれたホースの厚みより高くし、その前側底部をホース受板４１の水平板部４５上に乗せて固着することにより夫々立設する。すると、両軸受穴５６をホース受板４１の屈曲部外側付近の上方に配設でき、そこにホース押さえ具４２の軸棒５０を掛け渡して装着することにより、そのホース押え具４２を回動可能に支持できる。
【００２０】
そして、ホース押え具４２を支持台４３に装着した時、ホース押え丸棒支持具４８の両支持棒４９を両台板５７の外側近傍に配置し、更にホース押え丸棒４７をホース受板４１の屈曲部内側面から少し前側下方に離して設置できる。なお、ホース押え丸棒４７は支持具４８の両支持棒４９に沿って一定距離移動可能にしておき、軸棒５０とホース押え丸棒４７との間隔を変えられるようにする。
【００２１】
このホース受板４１とホース押え具支持台４３との結合体をホース装着室２９の最上部付近に左右に少し離し並べて設置する場合、筐体１２の前後仕切壁２２と上壁２７の台部２８により形成される隅部５９を利用し、そこに固着する。すると、ホース受板４１の垂直板部４４を垂直に支持し、水平板部４５を水平に支持でき、ホース押え具支持台４３に装着したホース押え具４２の軸棒５０とホース押え丸棒４７を夫々水平に支持できる。
【００２２】
そして、ホース装着室２９の下部で、両ホース押え機構４０の真下に当る位置に、耐圧試験用給水部６０、６１を夫々設置する。その際、両耐圧試験用給水部６０、６１を前後仕切壁２２の水平壁上に設置し、その左耐圧試験用給水部６０には例えば４０ｍｍの消防用ホース６２の端末部に備えた接続具６３と結合・分離自在の接続具６４を備える。又、右耐圧試験用給水部６１には例えば５０ｍｍ又は６５ｍｍの消防用ホース６５の端末部に備えた接続具６６と結合・分離自在の接続具６７を備える。但し、ホース径が５０ｍｍの場合には中継具を用いる。なお、各消防用ホース６２、６５の端末部に備える接続具６３、６６が女キャップの場合は当然耐圧試験用給水部６０、６１に備える接続具６４、６７は男キャップにする。
【００２３】
又、両耐圧試験用給水部６０、６１の各内部に、図６に示すように各ホース６２、６５の端末部内へ夫々給水する口径の大きな給水口６８、６９と各ホース６２、６５の端末部内の空気を水と一緒に夫々吐き出す口径の小さな吐出口７０、７１とを設ける。すると、消防用ホース６２、６５の耐圧試験時には水槽３０の水をストレーナ付き吸水管７２を接続した加圧用電動ポンプ３３により吸い上げ、空気室７３で脈動を除去した高圧水を分配管７４を経て、各耐圧試験用給水部６０、６１に設けた給水口６８、６９へ夫々送り込むことができる。
【００２４】
そして、この加圧用電動ポンプ３３と分配管７４をつなぐ送水本管７５には途中に調圧弁７６を介して水槽３０に戻る排水分岐管７７を接続し、その送水本管７５の分配管７４の近くに元バルブ７８を備える。又、分配管７４と両耐圧試験用給水部６０、６１とをつなぐ各送水分岐管７９、８０にはその分配管７４の近くにホース加圧バルブ８１、８２を夫々備える。又、分配管７４に送水圧力を表示する圧力計８３を備え、更に送水用連結硬質管へ送水するために、外部送水分岐管８４を接続して、そこに送水用連結硬質管加圧バルブ８５を備える。
【００２５】
又、両耐圧試験用給水部６０、６１の各吐出口７０、７１から水槽３０に夫々戻る排出管８６、８７を接続し、その先端付近に排出バルブ８８、８９を備える。なお、調圧弁７６、元バルブ７８、両ホース加圧バルブ８１、８２、送水用連結硬質管加圧バルブ８５、圧力計８３等は試験機１の前面中央部にあるパネル部２１の所定箇所に配置して備え付け、両排出バルブ８８、８９はホース装着室２９の下部にある水槽３０上に夫々備え付ける。
【００２６】
このような消防用送水管耐圧試験機１はハンドル１５を持って後方に引きながら、両車輪１４の軸中央部に設けたペダル９０を踏むと、後方に傾けることにより簡単に移動できる。試験場所では試験機１を立てて固定する。消防用ホース６２、６５の耐圧試験を実施する場合、水槽３０に水を入れ加圧用電動ポンプ３３の電源プラグ９１をコンセントに差し込み、１００Ｖの交流電源と接続する等した後、前面開口１１から消防用ホース６２、６５の端末部付近を装着室２９に入れ、所定位置に夫々装着する。なお、消防用ホース６２、６５は同時に耐圧試験を行うことができない。
【００２７】
その際、まず消防用ホース６２、６５の端末部に備えた接続具６３、６６を対応する耐圧試験用給水部６０、６１に備えた接続具６４、６７に接続する。次に、各ホース押え機構４０からホース押え具４２を外した後、各消防用ホース６２、６５の端末部付近を対応するホース受板４１の屈曲部内側面に沿わせ、更にその水平板部４５に巻きつけるようにして配置する。次に、外しておいたホース押え具４２を図７に示すようにホース押え具支持台４３に装着する。
【００２８】
このホース押え具４２の装着時に、ホース受板４１と一体結合したホース押え具支持台４３に対し、ホース押え丸棒４７でホース６２（６５）の端末部付近をすくい上げながら、ホース押え丸棒４７とその支持具４８を構成する両支持棒４９、軸棒５０との間にできる空間内に、ホース押え具支持台４３を構成する両台板５７の前部付近とホース受板４１の水平板部４５、更にその水平板部４５に巻き付けて配置したホース６２（６５）の端末部付近を嵌めて、軸棒５０を両台板５７に設けた軸棒装着脱用開口から軸受穴５６に夫々入れる。すると、ホース押え丸棒４７をホース受板４１の屈曲部内側面から少し離して設置し、両ノブナット５３を締め込んで、ホース６２（６５）の端末部近傍を外側から良く押さえることができる。
【００２９】
そこで、ホース６２（６５）の耐圧試験を行うため、先ず元バルブ７８、ホース加圧バルブ８１、８２等を閉じ、ホース６２（６５）を装着した耐圧試験用給水部６０（６１）の排出バルブ８８（８９）を開く。次に、調圧弁７６の圧力調整ノブ９２を抵抗がなくなるまで「低」側に回す。その後、加圧用電動ポンプ３３を始動するため、試験機１の右側壁２０の上端付近に備えたカバーを開けて電源スイッチ９３を入れる。次に、元バルブ７８を開き、圧力計８３の指示値が消防法で規定された耐圧試験圧力になるように圧力調整ノブ９２を回して調整し、ロックする。
【００３０】
そこで、ホース加圧バルブ８１（８２）を開く。すると、耐圧試験用給水部６０（６１）の給水口６８（６９）から加圧水がホース６２（６５）の端末部内へ矢印方向に供給され、同時にその端末部内に入っていた空気が矢印方向に移動して行き、吐出口７０（７１）を通じて水と一緒に排出管８６（８７）から外部に放出される。しかも、給水の初期にはホース６２（６５）の端末部から他のホース部分へも抜けて行く。排出された水は水槽３０に戻る。なお、９４は耐圧試験用給水部６０（６１）と送水分岐管７９（８０）と排出管８６（８７）との接続用基部である。
【００３１】
このようにして、加圧水が耐圧試験用給水部６０（６１）に設けた口径の大きな給水口６８（６９）からホース６２（６５）の端末部内へ急激に供給され、その端末部内の空気がその中に供給された一部の水と一緒に口径の小さな吐出口７０（７１）から吐き出されていると、ホース６２（６５）の端末部内の空気を短時間で外部に排出でき、その後排出バルブ８８（８９）からの水量が安定する。そこで、その排出バルブ８８（８９）を閉じる。すると、ホース６２（６５）の端末部近傍がホース受板４１とホース押え丸棒４７により押えられて閉鎖され、ホース６２（６５）の端末部内の空気も良好に排出されているため、ホース６２（６５）の端末部内に短時間で加圧水を満たして行き、その端末部をふくらませることができる。
【００３２】
その際、垂直板部４４に沿うホース部分のふくらみに押され、ホース押え丸棒支持具４８の両支持棒４９が軸棒５０を中心にして矢印で示す半時計方向に回転し、ホース押え丸棒４７が矢印で示す前方に移動する。それ故、ホース押え丸棒４７と水平板部４５との間が一層狭くなり、ホース６２（６５）の端末部付近のホース幅の全体をホース押え丸棒４７で更に強く押えて閉鎖できる。しかも、ホース押えが丸棒４７であるため、その丸棒４７によるホース押え箇所が直線状であり、押え力が大きくなる。
【００３３】
その後、圧力が安定したら再度圧力調整ノブ９２を回して圧力を規定の耐圧試験圧力に合わせ、その状態で少し例えば２０秒放置する。そこで、元バルブ７８を閉じ、電源スイッチ９３をオフにした後、消防法による耐圧試験として、ホース端末部からの漏水と外観状態を観察し、消防用ホース６２（６５）が使用に適するか判定する。又、連続加圧試験をする場合には規定圧力に合せた後に必要な時間放置し、消防法による耐圧試験をする。
【００３４】
耐圧試験後、排出バルブ８８（８９）を開き、ホース端末部内の残圧を抜き、ホース押え具４２を外し、更にホース端末部の接続具６３（６６）を耐圧試験用給水部６０（６１）の接続具６４（６７）から外す。
【００３５】
次に、低高層等の建築物に設置され、先端にホースの端末部に備えた接続具と結合・分離自在の接続具を備えた送水用連結硬質管例えば金属管に耐圧試験を実施する場合、図８に示すようなバルブ付き接続切替ユニット１００を用いる。このバルブ付き接続切替ユニット１００は互いに連通するＴ字状の二又管１０１を本体とし、その直管１０２の一端に送水用連結金属管の端末部に備えた接続具と結合・分離自在の接続具１０３を備え、他端部に送水バルブ１０４を備え、更にその他端に送水用電動ポンプ３１と接続する送水用ホース１０５との接続口１０６を有する。そして、直管１０２の中央部から分岐する分岐直管１０７の他端部に排出バルブ１０８を備え、更にその他端に排水用ホース１０９との接続口１１０を有する。又、その分岐直管１０７の中央部に加圧用電動ポンプ３３と接続する加圧用ホース１１１との接続口１１２を有する。
【００３６】
耐圧試験時には、先ず送水用電動ポンプ３１の電源プラグ１１３を１００Ｖ交流電源のコンセントに差し込む。そして、バルブ付き接続切替ユニット１００を試験対象の送水用連結金属管に接続し、その接続切替ユニット１００の各ホース接続口１０６、１１０、１１２に送水用ホース１０５、排水用ホース１０９、加圧用ホース１１１を夫々接続する。又、送水用ホース１０５を送水用電動ポンプ３１の送水用ホース接続口１１４に接続し、加圧用ホース１１１を試験機１の外部送水分岐管８４の加圧用ホース接続口に接続する。
【００３７】
次に、バルブ付き接続切替ユニット１００の排出バルブ１０８を閉じ、送水バルブ１０４を開き、試験機１の送水用連結硬質管加圧バルブ８５を閉じる。そして、送水用電動ポンプ３１の吸水用ホース接続口１１５に接続した吸水用ホースのストレーナを他に準備した例えば７００リットル以上の大容量のタンク内に入れる。
【００３８】
そこで、送水用電動ポンプ３１の電源スイッチ１１６を入れた後に、消防法の規定による放水試験を行なう。その際、送水用電動ポンプ３１として、吐出量が例えば１２０リットル／分のものを用いると、４階建の建物に設置した送水用連結金属管を３分程の短時間で満水にできる。なお、加圧用電動ポンプ３３は吐出量が少なく、例えば３．６リットル／分であるため送水用連結金属管を短時間で満水にできない。しかも、１００Ｖ電源で使用できる吐出量の多い加圧用電動ポンプは存在しない。試験終了後、送水用連結金属管の先端バルブを閉じ、送水用電動ポンプ３１の電源スイッチ１１６をオフにする。
【００３９】
すると、送水用連結金属管に満たされた水はその基端部に逆止弁が備えられているので、そのまま抜けることなく保たれる。そこで、バルブ付き接続切替ユニット１００の送水バルブ１０４を閉じた後、ホース端末部に対する耐圧試験とほぼ同様の過程を経て、送水用連結硬質管加圧バルブ８５を開く等の操作を行いながら、消防法の規定に従って送水用連結金属管に対する耐圧試験を行なう。なお、試験後に、送水用連結金属管内の水はその金属管の基端に設けた排水弁を開くと抜くことができる。
【００４０】
なお、１００Ｖ電源に使用できる吐出量の多い加圧用電動ポンプは現在開発されていないが、将来開発された時には、当然加圧用電動ポンプだけでよく、送水用電動ポンプを備える必要性はなくなる。
【００４１】
【発明の効果】
以上説明した本発明によれば、請求項１記載の発明では消防用ホースの端末部付近をホース受板の屈曲部内側面に沿わせ、更にその水平板部に巻きつけるように配置した後、外しておいたホース押え具を装着すると、その装着時にホース押え丸棒でホースの端末部をすくい上げながら、ホース押え丸棒と両支持棒、軸棒との間にできる空間内に、ホース押え具支持台を構成する両台部の前部付近と水平板部、更にその水平板部に巻き付けたホースの端末部付近を嵌めて、軸棒を両台部に設けた軸棒装着脱用開口から軸受穴に夫々入れて、ホース押え丸棒をホース受板の屈曲部内側面から少し離して設置し、両ノブナットを締め込むことにより、ホースの端末部近傍をホース押え丸棒により外側から良く押えることができる。
【００４２】
そして、加圧水を耐圧試験用給水部内に設けた給水口からホースの端末部内に供給すると、ホースの端末部近傍がホース受板とホース押え丸棒より押えられ閉鎖されているため、ホースの端末部内に短時間で加圧水を満たして行き、その端末部をふくらませることができる。すると、垂直板部に沿うホース部分のふくらみに押され、両支持棒が軸棒を中心にして回転し、ホース押え丸棒が前方に移動する。
【００４３】
このため、ホース押え丸棒と水平板部との間が一層狭くなり、ホースの端末部近傍のつぶれたホースの幅全体をホース押え丸棒で更に強く押えて閉鎖できる。しかも、ホース押えが丸棒であるため、その丸棒によるホース押さえ箇所が直線状であり、押え力が大きくなる。それ故、短時間で満水して規定圧力を加え、耐圧試験時間を短縮化できる。
【００４４】
又、請求項２記載の発明では加圧水が耐圧試験用給水部に設けた口径の大きな給水口からホースの端末部内へ急激に供給され、その端末部内の空気が水と一緒に口径の小さな吐出口から吐き出されていると、ホースの端末部内の空気を短時間で外部に排出できる。それ故、ホースの端末部内の空気に妨げられることなく短時間で満水にして規定圧力を加え、耐圧試験時間を短縮化できる。
【００４５】
又、請求項３記載の発明では送水用電動ポンプと加圧用電動ポンプとを備え、バルブ付き接続切替ユニットを用いることにより、送水用連結硬質管に対し、送水用電動ポンプからバルブ付き接続切替ユニットを介して多量の水を供給し、短時間で満水にし、その後バルブ付き接続切替ユニットの切替を行って加圧用電動ポンプからバルブ付き接続切替ユニットを介して規定圧力を加えることができる。それ故、送水用連結硬質管の耐圧試験時間を短縮化できる。
【図面の簡単な説明】
【図１】本発明を適用した自動式消防用送水管耐圧試験機の正面図である。
【図２】同自動式消防用送水管耐圧試験機の右側面図である。
【図３】同自動式消防用送水管耐圧試験機の背面図である。
【図４】同自動式消防用送水管耐圧試験機のホース押え機構を構成するホース受板とホース押え具支持台との結合状態を示す斜視図である。
【図５】同ホース押え機構を構成するホース押え具の一部を断面で示した正面図である。
【図６】同自動式消防用送水管耐圧試験機の配管路図である。
【図７】同自動式消防用送水管耐圧試験機による耐圧試験時における消防用ホースの装着状態等を示す部分断面図である。
【図８】同自動式消防用送水管耐圧試験機による送水用連結硬質管の耐圧試験時に用いるバルブ付き接続切替ユニットを示す正面図である。
【図９】従来の手動式消防用送水管耐圧試験機による耐圧試験時における消防用ホースへの加圧水供給状態を示す部分断面図である。
【符号の説明】
１０…自動式消防用送水管耐圧試験機 １１…前面開口部 １２…筐体 １６、２７…底上壁 １７、１８…前後壁 １９、２０…左右側壁 ２１…パネル部
２２…前後仕切壁 ２６…上下仕切壁 ２８…上壁の台部 ２９…ホース装着室 ３０…水槽 ３１…送水用電動ポンプ ３３…加圧用電動ポンプ ３５、３６…蓋部 ４０…ホース押え機構 ４１…ホース受板 ４２…ホース押え具 ４３…ホース押え具支持台 ４４…垂直板部 ４５…水平板部 ４６…挿通穴 ４７…ホース押え丸棒 ４８…ホース押え丸棒支持具 ４９…支持棒 ５０…軸棒
５２…螺部 ５３…ノブナット ５６…軸棒装着脱用開口付き軸受穴 ５７…台部（台板） ５９…隅部 ６０、６１…耐圧試験用給水部 ６２、６５…消防用ホース ６３、６４、６６、６７、１０３…接続具 ６８、６９…給水口 ７０、７１…吐出口 ７２…吸水管 ７３…空気室 ７４…分配管 ７５…送水本管 ７６…調圧弁 ７８…元バルブ ７９、８０…送水分岐管 ８１、８２…ホース加圧バルブ ８３…圧力計 ８４…外部送水分岐管 ８５…送水用連結硬質管加圧バルブ ８６、８７…排出管 ８８、８９…排出バルブ ９２…圧力調整ノブ １００…バルブ付き接続切替ユニット １０１…二又管 １０４…送水バルブ １０５…送水用ホース １０６，１１０，１１２…ホース接続口 １０８…排水バルブ １０９…排水用ホース １１１…加圧用ホース １１４…送水用ホース接続口 １１５…吸水用ホース接続口[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a fire fighting water pipe used for a pressure test of a fire hose generally used as a fire fighting water pipe or a connecting rigid pipe for water feeding such as a metal pipe installed in a building and connected to the fire fighting hose. It relates to a pressure tester.
[0002]
[Prior art]
Conventionally, fire hoses have been used as flexible water pipes used for fire fighting such as fire fighting and fire spread prevention. However, the fire hose is damaged and deteriorates with use and with the passage of time, so that a terminal portion provided with a hose fitting is particularly unusable. For example, with respect to water leakage, even for hoses designed exclusively for indoor firefighting, the water leakage rate 6 to 10 years after production is 8%, 31 to 10 to 15 years, 62% to 16 to 20 years, and more than 10 years. As time elapses, the water leakage rate increases rapidly. Therefore, it is necessary not only to determine the suitability of the hose for firefighting than 10 years or more based on the appearance of the terminal or the like, but also to carry out a pressure test specified by the Fire Service Law.
[0003]
As such a fire-fighting water pipe pressure tester, a tester equipped with a manual pump is used. Then, in order to supply the test machine with water into the end of the fire hose to be subjected to the pressure test, a water supply for the pressure test including a connector provided at the end of the hose and a connectable / separable connector is provided. A hose holding mechanism that closes by holding the vicinity of the end of the hose.
[0004]
The hose holding mechanism is disposed in a substantially vertical direction as shown in FIG. 9, for example, and has a flat hose receiving plate 2 which is disposed near the end of the fire hose 1 at the time of a pressure test along the outer surface thereof. A hose retainer which is set slightly apart from the outer surface of the hose receiving plate 2 and has a shaft rod 4 disposed substantially horizontally in the vicinity of the center of the outer surface of the hose retainer plate 3 which is bent slightly in an arc shape and presses the hose 1 from the outside. 5 and a bearing hole 6 having a shaft rod mounting / disconnecting opening for receiving the shaft rod 4 of the hose retainer 5 is disposed near the center of the outer side of the hose receiving plate 2, and the hose retainer 3 rotatably supports the hose retainer plate 3. Tool support 7. The distance between the hose receiving plate 2 and the hose holding plate 3 is substantially equal to the thickness of the flattened hose 1 above the vicinity of the shaft 4, and only the upper end of the hose holding plate 3 is slightly outward. On the other hand, under the shaft 4, it is gradually widened downward.
[0005]
At the time of the pressure test, the hose retainer 5 is first removed from the support 7 and the connector provided at the end of the fire hose 1 is connected to the connector provided at the water supply unit for the pressure test. 1 is arranged along the outer surface of the hose receiving plate 2 in the vicinity of the terminal portion. Then, by attaching the shaft rod 4 of the removed hose retainer 5 to the bearing hole 6 of the support base 7, the vicinity of the end of the hose 1 is sandwiched between the hose receiving plate 2 and the upper part of the hose retainer plate 3. The vicinity of the end of the hose can be closed to separate the end of the hose from other hose parts. Therefore, the pump is manually operated to supply pressurized water into the terminal of the hose 1 from a water supply port provided in the water supply unit for the pressure resistance test, and the hose terminal is filled with water 8.
[0006]
At this time, when the end of the hose 1 is filled with water 8 and bulges, the hose holding plate 3 rotates around the shaft 4, and the lower part moves in the direction of the arrow, and the lower portion of the hose receiving plate 2 moves downward. While the distance from the upper end increases, the upper part moves in the direction of the opposite arrow, and the vicinity of the bent portion with the upper end part becomes the narrowest. Then, the hose end is filled with water 8 and gradually pressurized, and a pressure test in which a specified pressure is applied for a certain period of time, and by observing the state of water leakage and the appearance from the hose end, whether the hose 1 is suitable for use. Can be determined.
[0007]
[Problems to be solved by the invention]
However, since the fire hose 1 to be subjected to the pressure test has been manufactured for more than 10 years, the hose 1 is naturally hardened, so that the hose 1 is hardly flattened. As a result, holes remain on both sides of the crushed hose 1. Moreover, since the hose holding plate 3 is a flat plate, the holding pressure is inevitably low. Therefore, even if water is supplied to the fire hose 1 to be subjected to the pressure resistance test, the water easily escapes from the end of the hose 1 to other hose parts and it is difficult to swell, so it takes a long time to fill the water and apply the specified pressure. Take it.
[0008]
The present invention has been made in view of such conventional problems, and a hose capable of shortening the pressure test time by filling the fire water supply pipe to be subjected to the pressure test in a short time and applying a specified pressure. An object of the present invention is to provide a fire-fighting water pipe pressure tester equipped with a holding mechanism.
[0009]
[Means for Solving the Problems]
In order to achieve the above-mentioned object, the fire-fighting water supply pipe pressure tester according to the present invention is provided with a hose holding mechanism for holding and closing the vicinity of the end of the fire hose during a pressure test to separate it from other hose parts. The hose holding mechanism is arranged such that one plate portion of a flat plate bent substantially in an L-shape is disposed substantially vertically, and the other plate portion is disposed substantially horizontally so as to protrude forward. A hose receiving plate that arranges the vicinity of the end of the hose along the inner surface of the bent part during the test, and a predetermined position of a hose holding round bar that is installed slightly away from the inner surface of the bent part of the hose receiving plate and presses the hose from the outside Are provided with holes for insertion, and two support rods which are arranged substantially in parallel with an interval larger than the width of the hose crushed in each of the insertion holes are inserted, and corresponding portions on one end side of both support rods A hose retainer having a shaft rod fixed to the hose holder, the hose retainer round rod and the axial rod being disposed at a predetermined distance substantially in parallel with each other, and a threaded portion provided at each other end of each of the support rods and a nut fitted therein. Hole for receiving the shaft of the hose holder Above the bent part of the hose receiving plate, above each bent part, two bases are provided which are wider than the width of the crushed hose and higher than the thickness of the crushed hose, and which support the hose holder in a rotatable manner. And a hose holder support.
[0010]
Further, the fire-fighting water pipe pressure tester according to the present invention is provided with a pressure-supply test water supply unit provided with a connector provided at a terminal of a fire-fighting hose to be subjected to a pressure test and a connector which can be freely coupled and separated. A water supply port having a large diameter for supplying water into the hose terminal section and a small-diameter discharge port for discharging air in the hose terminal section together with water are provided in the water supply section for the pressure resistance test.
[0011]
Further, the fire-fighting water pipe pressure tester according to the present invention is installed on a building, and a water-supply connecting rigid pipe provided with a connector provided at the end of the hose and a connector which can be freely coupled and separated at a tip thereof is subjected to a pressure test. And An electric pump for water supply that can fill the connection hard pipe for water supply in a short time, and an electric pump for pressurization that applies a specified pressure resistance test pressure after the connection hard pipe for water supply is full, and further includes a pump for water supply. A connector provided at the base end of the connecting rigid pipe and provided with a connector which can be connected and separated at one end of the bifurcated pipe, and connected to the other end of the bifurcated pipe with a water supply hose connected to an electric pump for water supply. A water supply valve is provided between the branch point of the bifurcated pipe and the water supply hose connection port at the other end, and a connection port for the drainage hose is provided at the other end. A connection switch with a drainage valve is provided between the drainage hose connection port and a pressure hose connected to the pressurized electric pump, and a drainage valve is provided between the pressure hose connection port and the drainage hose connection port. Use a unit.
[0012]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to the attached FIGS.
FIG. 1 is a front view of an automatic fire-fighting water pipe pressure tester to which the present invention is applied, FIG. 2 is a right side view thereof, and FIG. 3 is a rear view thereof. This automatic fire-fighting water pipe pressure tester 10 has a frame 12 as a housing 12 provided with a wide opening 11 at the upper front. A support rod 13 for a base projecting downward in an arc shape is provided on the lower front side of the housing 12, and wheels 14 (14a, 14b) are provided on the lower rear side. In addition, a handle 15 is provided on the upper rear side of the housing 12 to protrude upward in an arc shape. Then, the tester 1 can be freely moved on the floor or the like by holding the handle 15 and can be set up.
[0013]
The housing 12 has its bottom wall 16 horizontal and its front and rear walls 17, 18 and its left and right side walls 19, 20 vertical. However, the upper part of the front wall 17 corresponding to the lower part of the front surface of the housing 12 is retreated to form a curved inclined wall, which is used as the panel part 21. In addition, a partition wall 22 that partitions the front and rear inside the housing 12 is provided substantially at the center of the internal space. However, the upper part 23 of the front and rear partition walls 22 is bent forward and protrudes. At that time, the upper end portion of the partition wall upper portion 23 is made vertical, and the lower portion is inclined.
[0014]
Then, the central portion 24 of the front and rear partition wall 22 is made vertical, and the lower portion 25 is bent forward and protruded. At this time, the lower portion 25 is made horizontal at the portion near the central portion 24 and the portion below it is made vertical. Further, a partition wall 26 for vertically partitioning the space inside the rear side from the front and rear partition walls 22 of the housing 12 is provided horizontally slightly below the center thereof. The upper wall 27 of the housing 12 has a front portion protruding slightly upward to form a pedestal portion 28 having a flat upper surface, and a rear portion thereof is slightly inclined so as to descend toward the rear.
[0015]
The upper portion of the front side of the partitioned housing 12 is used as a hose mounting chamber 29 for mounting near the end of the fire hose to be subjected to the pressure test, and the lower portion is used as a water supply tank 30 used for the pressure test. Further, the rear upper portion of the housing 12 is a chamber 32 in which the water pump 31 is installed, and the lower portion thereof is a chamber 34 in which the pressurizing electric pump 33 is installed. The lid 35 of the electric pump installation chamber 32 for water supply, which forms the rear wall 18 of the housing 12, is pivotally supported at its lower end, for example, so that it can be opened and closed. The lid 36 of the electric pump installation chamber 34 for pressurization has, for example, four corners. It can be attached and detached by screwing. In addition, it is preferable to use a commercial power supply of 100 V for both the electric pumps 31 and 33 for water supply and pressurization because the test machine 1 can be easily used in various places and does not pollute the air in a building or the like.
[0016]
A hose holding mechanism 40 (40a, 40b) which closes and closes the vicinity of the end of the hose during the pressure test and separates it from the other hose parts is arranged near the uppermost part of the hose mounting chamber 29 with a slight distance left and right. A hose receiving plate 41 for receiving each of the hose holding mechanisms 40 near the end of the hose, a hose holding tool 42 for holding the vicinity of the end of the hose, and a hose holding tool support for supporting the hose holding tool 42. 43. At this time, as shown in FIG. 4, the hose receiving plate 41 is provided with one plate portion 44 of a flat plate bent substantially in an L-shape in a substantially vertical direction, and the other from the center of the upper end of the vertical plate portion 44 to the other end. Are arranged in a substantially horizontal direction and project forward. The width of the horizontal plate portion 45 is made wider than the width of the crushed hose, and the tip portion is lifted forward and slightly inclined.
[0017]
The hose retainer 42 has a predetermined length as shown in FIG. 5, and has a hose retainer round bar 47 provided with insertion holes 46 (46a, 46b) near both ends thereof. An assembly with a support 48 for supporting the round bar 47 is provided. The support member 48 has two support rods 49 (49a, 49b) which are arranged substantially parallel to each other with an interval larger than the width of the crushed hose. Each of the holes 46 is used by being inserted therethrough.
[0018]
Then, both ends of the shaft 50 are fixed to the corresponding portions of the both ends of the support bars 49, respectively, and the ends thereof are further connected by the reinforcing rods 51, and the shaft 50 and the hose holding round bar 47 are connected to each other. Are disposed substantially parallel to each other at a predetermined distance, and threaded portions 52 (52a, 52b) are provided at the other end portions of the two support rods 49, respectively. The knob nuts 53 (53a, 53b) for arbitrarily determining the intervals are fitted respectively, and the other ends thereof are respectively provided with lock nuts 54 (54a, 54b). A washer 55 is interposed between the hose holding round bar 47 and each knob nut 53, and between each knob nut 53 and the lock nut 54.
[0019]
The hose retainer support base 43 is provided with bearing holes 56 (56a, 56b) having shaft rod mounting / removing openings for receiving the shaft rod 50 of the hose retainer 42 at the upper part thereof, for example, the base plates 57 (57a, 57b). ) Is wider than the width of the collapsed hose, the rear bottoms of both base plates 57 are connected by a horizontally arranged bottom plate 58, and both bearing holes 56 are made higher than the thickness of the collapsed hose. Each of the hose receiving plates 41 is erected by being mounted on and fixed to a horizontal plate portion 45 of the hose receiving plate 41. Then, the both bearing holes 56 can be disposed above the vicinity of the outer side of the bent portion of the hose receiving plate 41, and the shaft retainer 50 of the hose retainer 42 is attached to the hose retainer 41 by rotating the hose retainer 42. Can be supported as much as possible.
[0020]
When the hose retainer 42 is mounted on the support base 43, the support rods 49 of the hose retainer round bar support 48 are arranged near the outer sides of both base plates 57, and the hose retainer round bar 47 is further connected to the hose receiving plate 41. It can be installed slightly away from the inner surface of the bent part on the lower front side. In addition, the hose holding round bar 47 is movable by a fixed distance along both support bars 49 of the support tool 48 so that the interval between the shaft bar 50 and the hose holding round bar 47 can be changed.
[0021]
When the combined body of the hose receiving plate 41 and the hose retainer support base 43 is arranged side by side in the vicinity of the uppermost part of the hose mounting chamber 29 with a slight distance left and right, the base part of the front and rear partition walls 22 and the upper wall 27 of the housing 12 is formed. A corner 59 formed by 28 is used and fixed there. Then, the vertical plate portion 44 of the hose receiving plate 41 is supported vertically, the horizontal plate portion 45 can be supported horizontally, and the shaft bar 50 and the hose press round bar 47 of the hose presser 42 attached to the hose presser support base 43 are supported. Can be supported horizontally.
[0022]
Then, water supply units 60 and 61 for the pressure resistance test are respectively installed at positions below the hose mounting chamber 29 and just below the hose holding mechanisms 40. At this time, the water supply parts 60 and 61 for both pressure resistance tests are installed on the horizontal wall of the front and rear partition wall 22, and the left water supply part 60 for pressure resistance test has, for example, a connector provided at the end of a 40 mm fire hose 62. 63 is provided with a connection tool 64 that can be freely coupled and separated. In addition, the water supply unit 61 for the right pressure test has a connector 67 provided at the end of a fire hose 65 of, for example, 50 mm or 65 mm, and a connector 67 that can be freely coupled and separated. However, when the hose diameter is 50 mm, a relay is used. When the connectors 63 and 66 provided at the ends of the fire hoses 62 and 65 are female caps, the connectors 64 and 67 provided in the water supply sections 60 and 61 for the pressure resistance test are naturally male caps.
[0023]
Also, as shown in FIG. 6, large-diameter water supply ports 68, 69 for supplying water to the insides of the ends of the hoses 62, 65 and the terminals of the hoses 62, 65, respectively, as shown in FIG. Discharge ports 70 and 71 having a small diameter for discharging the air inside the section together with the water are provided. Then, at the time of the pressure test of the fire hoses 62 and 65, the water in the water tank 30 is sucked up by the pressurizing electric pump 33 connected to the water suction pipe 72 with the strainer, and the high pressure water from which the pulsation is removed in the air chamber 73 is passed through the distribution pipe 74. Water can be supplied to water supply ports 68 and 69 provided in the water supply sections 60 and 61 for the pressure resistance test, respectively.
[0024]
Then, a drain branch pipe 77 returning to the water tank 30 via a pressure regulating valve 76 is connected to a water main pipe 75 connecting the pressurizing electric pump 33 and the distribution pipe 74, and a distribution pipe 74 of the water main pipe 75 is connected to the water main pipe 75. A main valve 78 is provided nearby. Each of the water supply branch pipes 79 and 80 connecting the distribution pipe 74 to the water supply sections 60 and 61 for both pressure resistance tests is provided with hose pressure valves 81 and 82 near the distribution pipe 74, respectively. Further, a pressure gauge 83 for displaying a water supply pressure is provided in the distribution pipe 74, and an external water supply branch pipe 84 is connected to the water supply connection rigid pipe for supplying water to the water supply connection rigid pipe. Is provided.
[0025]
Further, discharge pipes 86, 87 returning from the discharge ports 70, 71 of the water supply sections 60, 61 for both pressure resistance tests to the water tank 30, respectively, are connected, and discharge valves 88, 89 are provided near the ends thereof. The pressure regulating valve 76, the main valve 78, the two hose pressurizing valves 81 and 82, the connection hard pipe pressurizing valve 85 for water supply, the pressure gauge 83, and the like are provided at predetermined positions on the panel unit 21 in the center of the front surface of the tester 1. The two discharge valves 88 and 89 are mounted on the water tank 30 below the hose mounting chamber 29, respectively.
[0026]
Such a fire-fighting water pipe pressure tester 1 can be easily moved by holding the handle 15 and pulling it rearward while depressing a pedal 90 provided at the center of the shaft of both wheels 14 to tilt it rearward. At the test place, the test machine 1 is set up and fixed. When a pressure test of the fire hoses 62 and 65 is performed, water is put into the water tank 30, the power plug 91 of the electric pump 33 is inserted into an outlet, connected to a 100 V AC power supply, and the like. The vicinity of the terminals of the hoses 62 and 65 are put into the mounting chamber 29 and mounted at predetermined positions. Note that the fire hoses 62 and 65 cannot be subjected to the pressure resistance test at the same time.
[0027]
At that time, first, the connecting tools 63 and 66 provided at the end portions of the fire hoses 62 and 65 are connected to the connecting tools 64 and 67 provided in the corresponding water supply sections 60 and 61 for the pressure resistance test. Next, after removing the hose retainer 42 from each hose retainer mechanism 40, the vicinity of the end of each fire hose 62, 65 is made to fit along the inner surface of the corresponding bent portion of the hose receiving plate 41, and the horizontal plate 45 And wrap it around. Next, the removed hose retainer 42 is mounted on the hose retainer support base 43 as shown in FIG.
[0028]
When the hose retainer 42 is mounted, the hose retainer round bar 47 is used to lift the vicinity of the end of the hose 62 (65) with the hose retainer round bar 47 against the hose retainer support base 43 integrally connected to the hose receiving plate 41. In the space formed between the two support rods 49 and the shaft 50 constituting the supporting member 48 and the vicinity of the front portions of the two base plates 57 constituting the hose retainer support base 43 and the horizontal plate of the hose receiving plate 41. The end portion of the hose 62 (65) wound around the horizontal plate portion 45 and the horizontal plate portion 45 is fitted, and the shaft bar 50 is inserted into the bearing hole 56 from the shaft rod mounting / dismounting opening provided on both base plates 57. Put in. Then, the hose holding round bar 47 is set slightly apart from the inner surface of the bent portion of the hose receiving plate 41, and the two knob nuts 53 are tightened, so that the vicinity of the end portion of the hose 62 (65) can be well pressed from the outside.
[0029]
Therefore, in order to perform a pressure test of the hose 62 (65), first, the main valve 78, the hose pressurizing valves 81 and 82, etc. are closed, and the discharge valve of the water supply unit 60 (61) for the pressure test to which the hose 62 (65) is attached. 88 (89) is opened. Next, the pressure adjusting knob 92 of the pressure regulating valve 76 is turned to the “low” side until there is no resistance. Thereafter, in order to start the pressurizing electric pump 33, the cover provided near the upper end of the right side wall 20 of the tester 1 is opened, and the power switch 93 is turned on. Next, the main valve 78 is opened, and the pressure adjustment knob 92 is turned and adjusted so that the indicated value of the pressure gauge 83 becomes the pressure resistance test pressure specified by the Fire Service Act, and locked.
[0030]
Then, the hose pressurizing valve 81 (82) is opened. Then, pressurized water is supplied in the direction of the arrow from the water supply port 68 (69) of the water supply unit 60 (61) for the pressure resistance test into the terminal of the hose 62 (65), and at the same time, the air that has entered the terminal moves in the direction of the arrow. The water is discharged to the outside through the discharge port 86 (87) together with the water through the discharge port 70 (71). In addition, at the initial stage of the water supply, the hose 62 (65) also passes through the other end of the hose. The discharged water returns to the water tank 30. Reference numeral 94 denotes a base for connection between the water supply unit 60 (61) for the pressure resistance test, the water supply branch pipe 79 (80), and the discharge pipe 86 (87).
[0031]
In this way, the pressurized water is rapidly supplied from the large-diameter water supply port 68 (69) provided in the pressure-resistant test water supply section 60 (61) into the terminal of the hose 62 (65), and the air in the terminal is discharged from the terminal. When the water is discharged from the small-diameter discharge port 70 (71) together with a part of the water supplied therein, the air in the terminal portion of the hose 62 (65) can be discharged to the outside in a short time, and then the discharge valve is provided. The amount of water from 88 (89) stabilizes. Then, the discharge valve 88 (89) is closed. Then, the vicinity of the end of the hose 62 (65) is closed by being pressed by the hose receiving plate 41 and the hose holding round bar 47, and the air in the end of the hose 62 (65) is also discharged well. (65) The terminal can be filled with pressurized water in a short time to inflate the terminal.
[0032]
At this time, it is pushed by the swelling of the hose portion along the vertical plate portion 44, and both support rods 49 of the hose retainer round bar support tool 48 rotate around the shaft 50 in a counterclockwise direction indicated by an arrow, and The rod 47 moves forward as indicated by the arrow. Therefore, the space between the hose holding round bar 47 and the horizontal plate portion 45 is further narrowed, and the entire hose width near the end of the hose 62 (65) can be further strongly pressed by the hose holding round bar 47 to close the hose. In addition, since the hose retainer is the round bar 47, the place where the hose is pressed by the round bar 47 is linear, and the pressing force is increased.
[0033]
After that, when the pressure is stabilized, the pressure adjusting knob 92 is turned again to adjust the pressure to the specified pressure resistance test pressure, and left in that state for, for example, 20 seconds. Then, after closing the main valve 78 and turning off the power switch 93, as a pressure resistance test according to the Fire Service Law, the leakage from the hose terminal and the appearance are observed to determine whether the fire hose 62 (65) is suitable for use. I do. In the case of performing a continuous pressurization test, the pressure is adjusted to a specified pressure and then left for a necessary time, and then a pressure resistance test is performed by the fire service law.
[0034]
After the pressure test, the discharge valve 88 (89) is opened, the residual pressure in the hose end is released, the hose retainer 42 is removed, and the connector 63 (66) at the hose end is connected to the water supply 60 (61) for the pressure test. From the connecting tool 64 (67).
[0035]
Next, when conducting a pressure test on a water-supplying connection rigid pipe such as a metal pipe, which is installed on a building such as a low-rise building and has a connection fitting provided at the end of the hose and a connection fitting that can be freely separated from the connection end. A connection switching unit with a valve 100 as shown in FIG. 8 is used. The connection switching unit with a valve 100 has a T-shaped bifurcated pipe 101 communicating with each other as a main body, and is connected to one end of a straight pipe 102 with a connector provided at the end of a connecting metal pipe for water supply so as to be connectable / separable. A water supply valve 104 is provided at the other end, and a connection port 106 with a water supply hose 105 connected to the electric water supply pump 31 is provided at the other end. A discharge valve 108 is provided at the other end of the branch straight pipe 107 branched from the center of the straight pipe 102, and a connection port 110 to a drain hose 109 is provided at the other end. In addition, a connection port 112 for a pressurizing hose 111 connected to the pressurizing electric pump 33 is provided at the center of the branch straight pipe 107.
[0036]
At the time of the pressure resistance test, first, the power plug 113 of the electric water pump 31 is plugged into an outlet of a 100 V AC power supply. Then, the connection switching unit 100 with a valve is connected to the connection pipe for water supply to be tested, and the hoses 106, 110, and 112 of the connection switching unit 100 are connected to the water supply hose 105, the drainage hose 109, and the pressurization hose. 111 are connected respectively. Further, the water supply hose 105 is connected to the water supply hose connection port 114 of the water supply electric pump 31, and the pressurization hose 111 is connected to the pressurization hose connection port of the external water supply branch pipe 84 of the tester 1.
[0037]
Next, the discharge valve 108 of the valved connection switching unit 100 is closed, the water supply valve 104 is opened, and the water supply connection rigid pipe pressurizing valve 85 of the tester 1 is closed. Then, the strainer of the water suction hose connected to the water suction hose connection port 115 of the electric water pump 31 is placed in another prepared large-capacity tank of, for example, 700 liters or more.
[0038]
Therefore, after turning on the power switch 116 of the electric pump 31 for water supply, a water discharge test according to the provisions of the Fire Service Law is performed. In this case, if the electric pump 31 having a discharge rate of, for example, 120 liters / minute is used as the electric pump 31 for water supply, the connecting metal pipe for water supply installed in the four-story building can be filled with water in a short time of about 3 minutes. In addition, since the pressurized electric pump 33 has a small discharge amount, for example, 3.6 liter / min, the water supply connection metal pipe cannot be filled with water in a short time. Moreover, there is no pressurized electric pump with a large discharge amount that can be used with a 100 V power supply. After the test, the end valve of the connecting metal pipe for water supply is closed, and the power switch 116 of the electric pump 31 for water supply is turned off.
[0039]
Then, the water filled in the connecting metal pipe for water supply is kept without being removed as it is because the check valve is provided at the base end thereof. Therefore, after closing the water supply valve 104 of the connection switching unit 100 with a valve, the fire fighting operation is performed while opening the water supply connection hard pipe pressurizing valve 85 through substantially the same process as the pressure resistance test for the hose end portion. Conduct a pressure test on the connecting metal pipe for water supply in accordance with the provisions of the law. After the test, the water in the water supply connection metal pipe can be drained by opening a drain valve provided at the base end of the metal pipe.
[0040]
Although an electric pump for pressurization with a large discharge amount that can be used for a 100 V power supply has not been developed at present, when it is developed in the future, it is only necessary to use an electric pump for pressurization, and there is no need to provide an electric pump for water supply.
[0041]
【The invention's effect】
According to the present invention described above, in the invention according to claim 1, the vicinity of the end portion of the fire hose is arranged along the inner surface of the bent portion of the hose receiving plate, and further disposed around the horizontal plate portion, and then removed. When the attached hose retainer is installed, the hose retainer is supported in the space formed between the hose retainer bar and both support rods and the shaft rod while scooping up the end of the hose with the hose retainer rod at the time of installation. Fit the vicinity of the front part of both base parts and the horizontal plate part, and the vicinity of the end of the hose wrapped around the horizontal plate part. Insert the hose holding round bar a little away from the inner surface of the bent part of the hose receiving plate by putting it in each hole, and tighten both knob nuts, so that the vicinity of the end of the hose can be well pressed from outside by the hose holding round bar. it can.
[0042]
When the pressurized water is supplied into the end of the hose from a water supply port provided in the water supply unit for the pressure test, the vicinity of the end of the hose is closed by being pressed by the hose receiving plate and the hose holding round bar. Can be filled with pressurized water in a short time to inflate the terminal. Then, it is pushed by the bulge of the hose part along the vertical plate part, both support rods rotate around the shaft rod, and the hose holding round bar moves forward.
[0043]
For this reason, the space between the hose holding round bar and the horizontal plate portion is further narrowed, and the entire width of the crushed hose near the end of the hose can be further strongly closed with the hose holding round bar to close the hose. In addition, since the hose retainer is a round bar, the place where the hose is pressed by the round bar is linear, and the pressing force is increased. Therefore, it is possible to fill the water in a short time and apply the specified pressure, thereby shortening the pressure test time.
[0044]
According to the second aspect of the present invention, pressurized water is rapidly supplied from the large-diameter water supply port provided in the water supply section for the pressure test to the end of the hose, and the air in the terminal is discharged together with the water into the small-diameter discharge port. When the air is discharged from the hose, the air in the end of the hose can be discharged to the outside in a short time. Therefore, the hose can be filled with water in a short time without being hindered by the air in the end portion of the hose, and the specified pressure can be applied to shorten the pressure test time.
[0045]
According to the third aspect of the present invention, the electric water pump and the pressurizing electric pump are provided, and the connection switching unit with a valve is used. A large amount of water can be supplied through the valve to fill the water in a short time, and then the connection switching unit with a valve is switched to apply a specified pressure from the pressurizing electric pump via the connection switching unit with a valve. Therefore, the pressure test time of the connecting rigid pipe for water supply can be shortened.
[Brief description of the drawings]
FIG. 1 is a front view of an automatic fire-fighting water pipe pressure tester to which the present invention is applied.
FIG. 2 is a right side view of the automatic fire-fighting water pipe pressure tester.
FIG. 3 is a rear view of the automatic fire water pipe pressure tester.
FIG. 4 is a perspective view showing a coupled state of a hose receiving plate and a hose retainer support constituting a hose retainer mechanism of the automatic fire-fighting water pipe test apparatus.
FIG. 5 is a front view showing a part of a hose retainer constituting the hose retainer mechanism in cross section.
FIG. 6 is a piping diagram of the automatic fire water supply pipe pressure tester.
FIG. 7 is a partial cross-sectional view showing a mounted state of a fire hose at the time of a pressure test by the automatic fire water pipe test apparatus.
FIG. 8 is a front view showing a connection switching unit with a valve used for a pressure test of a water supply connection hard pipe by the automatic fire water supply pipe pressure tester.
FIG. 9 is a partial cross-sectional view showing a state of supplying pressurized water to a fire hose during a pressure test using a conventional manual fire water pipe test apparatus.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 ... Automatic fire-fighting water pipe pressure tester 11 ... Front opening 12 ... Housing 16, 27 ... Bottom upper wall 17, 18 ... Front and rear wall 19, 20 ... Left and right side wall 21 ... Panel part
Reference Signs List 22 front and rear partition walls 26 upper and lower partition walls 28 upper wall base 29 hose mounting chamber 30 water tank 31 electric water pump 33 pressurizing electric pump 35, 36 lid 40 hose-holding mechanism 41 Hose receiving plate 42 Hose retainer 43 Hose retainer support base 44 Vertical plate 45 Horizontal plate 46 Insertion hole 47 Hose retainer round bar 48 Hose retainer round bar support 49 49 Support rod 50 Shaft rod
52: Screw part 53: Knob nut 56: Bearing hole with opening for attaching and detaching a shaft rod 57: Base part (base plate) 59: Corner part 60, 61 ... Water supply part for pressure resistance test 62, 65 ... Fire hose 63, 64, 66, 67, 103 ... Connectors 68, 69 ... Water supply ports 70, 71 ... Discharge ports 72 ... Water absorption pipes 73 ... Air chambers 74 ... Distribution pipes 75 ... Water supply main pipes 76 ... Pressure regulating valves 78 ... Main valves 79, 80 ... Water supply Branch pipes 81, 82 ... Hose pressurizing valve 83 ... Pressure gauge 84 ... External water supply branch pipe 85 ... Connected hard pipe pressurizing valve for water supply 86, 87 ... Discharge pipe 88, 89 ... Discharge valve 92 ... Pressure adjusting knob 100 ... Valve Connection switching unit with 101 101 bifurcated pipe 104 water supply valve 105 water supply hose 106, 110, 112 hose connection port 108 drainage valve 109 drainage hose 111 pressurization hose 11 ... water supply hose connection port 115 ... water hose connection port
