JPH0599871A - Component detector for explosion-proof - Google Patents
Component detector for explosion-proofInfo
- Publication number
- JPH0599871A JPH0599871A JP24528091A JP24528091A JPH0599871A JP H0599871 A JPH0599871 A JP H0599871A JP 24528091 A JP24528091 A JP 24528091A JP 24528091 A JP24528091 A JP 24528091A JP H0599871 A JPH0599871 A JP H0599871A
- Authority
- JP
- Japan
- Prior art keywords
- pipe
- component
- component detecting
- detecting element
- terminal box
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
Description
【0001】[0001]
【産業上の利用分野】この発明は爆発性の雰囲気におけ
る成分たとえば湿度、溶剤あるいは酸素等を検出する検
出器の改良に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improved detector for detecting components such as humidity, solvent or oxygen in an explosive atmosphere.
【0002】[0002]
【従来の技術】従来、工業用ガス検知警報器、一酸化炭
素警報器、アルコールチェッカーなどのセンサーはその
検出素子単独では精度の高いものがあるが、爆発性の雰
囲気に対して安全を保証されるものは少ない。とくに爆
発性の雰囲気において特定の成分を検出するばあいには
検出部に爆発性のガスも自由に出入りする。このため万
一、検出部で爆発性のガスに着火したばあい、その火炎
は環境雰囲気中に漏れ、大きな事故に繋がりかねない。2. Description of the Related Art Conventionally, sensors for industrial gas detection alarms, carbon monoxide alarms, alcohol checkers and the like have high accuracy with their detection elements alone, but safety is guaranteed for explosive atmospheres. There are few things. In particular, when detecting a specific component in an explosive atmosphere, explosive gas can freely flow in and out of the detection unit. Therefore, if an explosive gas is ignited by the detection unit, the flame may leak into the environmental atmosphere and cause a serious accident.
【0003】[0003]
【発明が解決しようとする課題】この発明は種々の検出
素子が爆発性の雰囲気において、これを単独で使用する
ばあい、爆発の危険を孕んでいることである。DISCLOSURE OF THE INVENTION The present invention is confronted with the danger of explosion when various detecting elements are used alone in an explosive atmosphere.
【0004】[0004]
【課題を解決するための手段】この発明における防爆用
成分検出器は端子箱に連結した金属製のパイプの一端を
端子箱に連結するとともに、その他端に筒状のベースを
螺合し、この筒状のべースとパイプ間には緩み止め部材
を設け、またパイプの他端に成分検出素子を取付け、こ
の成分検出素子のケーブルを、パイプを通して端子箱に
導き、さらに筒状のベースにはガードを設け、このガー
ドには成分検出素子を外気に対して連通させる連通口を
設け、この連通口と成分検出素子間には成分検出素子に
対し、通気性を有し、かつ火炎の漏洩を阻止するフレー
ムアレスタを設けたものである。In the explosion-proof component detector according to the present invention, one end of a metal pipe connected to a terminal box is connected to the terminal box, and a cylindrical base is screwed to the other end. A loosening prevention member is provided between the cylindrical base and the pipe, and the component detection element is attached to the other end of the pipe.The cable of this component detection element is led to the terminal box through the pipe, and then to the tubular base. Is equipped with a guard, and this guard is provided with a communication port for communicating the component detection element with the outside air. Between the communication port and the component detection element, the component detection element is breathable and flame leaks. It is provided with a flame arrester to prevent the.
【0005】[0005]
【発明の作用】この発明における防爆用成分検出器は検
出素子と端子箱とが金属製のパイプにより離間され、ま
た検出素子はフレームアレスタを通してその雰囲気にお
ける気体を検出するが、検出部内で発生した火炎はフレ
ームアレスタによって阻止される。According to the present invention, the explosion-proof component detector has the detection element and the terminal box separated by the metal pipe, and the detection element detects the gas in the atmosphere through the flame arrestor. The flame is arrested by the flame arrester.
【0006】[0006]
【実施例】以下、この発明の実施例を図について説明す
る。すなわち、図1および図2において、金属製のパイ
プ1には検出器2と端子箱4が取付けられる。すなわち
その一端には端子箱4がねじ5により連結される。また
その他端には検出器2が取付けられる。パイプ1内にお
いて、ケーブル7の一端は端子箱4に導かれ、この内部
においてプリント基板9に接続される。この基板はまた
外部端子10を介して外部配線11に接続される。この
外部配線はコンジット12およびケーブルグランド13
を介して端子箱4の外部に引き出される。またケーブル
7の他端は検出器2に接続される。パイプ1はその中間
部において2つに分割され、一方の管部1aに検出装置
取付け用のねじ部15を有する筒状の取付けナット16
が、また他方の管部1bに取付けナット16と螺合する
ねじ部17を有する締め付けナット18がそれぞれ熔接
19、19により固定されている。取付けナット16と
ケーブル7間にこれら両者をたがいに気密にシールする
耐圧シール部材21が設けられている。また締め付けナ
ット18の鍔部には緩み止めねじ23が螺合し、その先
端部は取付けナット16に当接している。Embodiments of the present invention will be described below with reference to the drawings. That is, in FIGS. 1 and 2, the detector 2 and the terminal box 4 are attached to the metal pipe 1. That is, the terminal box 4 is connected to the one end by the screw 5. The detector 2 is attached to the other end. In the pipe 1, one end of the cable 7 is guided to the terminal box 4 and is connected to the printed board 9 inside the terminal box 4. This substrate is also connected to the external wiring 11 via the external terminal 10. This external wiring is a conduit 12 and a cable gland 13.
It is drawn out of the terminal box 4 via the. The other end of the cable 7 is connected to the detector 2. The pipe 1 is divided into two in the middle portion thereof, and a tubular mounting nut 16 having a threaded portion 15 for mounting the detection device on one pipe portion 1a.
However, a tightening nut 18 having a threaded portion 17 that is screwed into the mounting nut 16 is fixed to the other tube portion 1b by welding 19 and 19, respectively. A pressure-proof sealing member 21 is provided between the mounting nut 16 and the cable 7 to hermetically seal the two together. Further, a loosening prevention screw 23 is screwed into the flange portion of the tightening nut 18, and the tip end portion thereof is in contact with the mounting nut 16.
【0007】図3において、パイプ1は図2に示すよう
に2つに分割されておらず、1本の管として構成され
る。そしてパイプ1の内部には充填剤たとえばエポキシ
樹脂が充填され、またその中間部には環状のストッパー
25が熔接19により固定される。取付けナット16は
その内側において、ストッパー25の一方の面と当接
し、また締め付けナット18は取付けナット16に螺合
した状態でストッパー25の他方の面と当接する。In FIG. 3, the pipe 1 is not divided into two as shown in FIG. 2, but is constructed as a single pipe. A filler such as an epoxy resin is filled in the pipe 1, and an annular stopper 25 is fixed to the middle portion of the pipe 1 by welding 19. The mounting nut 16 abuts on one side of the stopper 25 on its inner side, and the tightening nut 18 abuts on the other side of the stopper 25 while being screwed onto the mounting nut 16.
【0008】また図4に示すものは取付けナット16と
締め付けナット18との間にこれら両者の緩みを防止す
るパッキンを設けたものである。Further, the one shown in FIG. 4 has a packing provided between the mounting nut 16 and the tightening nut 18 for preventing loosening of the both.
【0009】さらに図5に示すものは円板状のフランジ
27をこれにパイプ1を貫通させた状態で熔接19、1
9により固定したもので、このフランジ27にはその軸
心と平行な取付け孔28およびOリング29が設けられ
る。Further, in the one shown in FIG. 5, a disc-shaped flange 27 is welded 19 and 1 in a state where the pipe 1 is penetrated therethrough.
The flange 27 is provided with a mounting hole 28 and an O-ring 29 that are parallel to the axis of the flange 27.
【0010】図6は検出器2の外観を、また図7はその
検出器のパイプ1に対する取付け関係の詳細を示すもの
で、パイプ1の他端には図7に示すように、成分検出素
子31が取付けられている。リード線を形成するケーブ
ル7はその成分検出素子31に接続される。検出器2の
ベース33の軸心線上に沿って雌ねじ34が設けられ、
この雌ねじにはパイプ1の他端に設けた雄ねじ35が螺
合する。またベース33にはキャップ状のフレームアレ
スタ37が熔着38により設けられている。このフレー
ムアレスタは焼結金属により形成され、成分検出素子3
1に対し、通気性を有し、かつ火炎の漏洩を阻止する。
またベース33にはガード39が熔着40により固定さ
れる。このガードはたとえば金属線を折曲げ、これを組
み合わせることにより形成される。このガードは成分検
出素子31を外力から保護するもので、成分検出素子3
1を外気に対して連通させる連通口42を有している。
緩み止め部材43たとえばねじは検出器2のパイプ1に
対する緩み止めを司る。FIG. 6 shows the appearance of the detector 2, and FIG. 7 shows the details of the mounting relationship of the detector to the pipe 1. At the other end of the pipe 1, as shown in FIG. 31 is attached. The cable 7 forming the lead wire is connected to the component detecting element 31. A female screw 34 is provided along the axis of the base 33 of the detector 2,
A male screw 35 provided at the other end of the pipe 1 is screwed into this female screw. Further, a cap-shaped frame arrester 37 is provided on the base 33 by welding 38. This flame arrester is made of sintered metal and has a component detecting element 3
1, it has air permeability and prevents leakage of flame.
A guard 39 is fixed to the base 33 by welding 40. This guard is formed, for example, by bending a metal wire and combining them. This guard protects the component detection element 31 from external force, and the component detection element 3
It has a communication port 42 for communicating 1 with the outside air.
The loosening prevention member 43, for example, a screw controls the loosening prevention of the detector 2 to the pipe 1.
【0011】図8はガード39を図6に示すベース33
と一体に形成したもので、全体としてキャップ状に形成
され、図9に示すように、その開口側の内面に設けた雌
ねじ34をパイプ1の他端に設けた雄ねじ35に螺合
し、かつこのガードの底部には成分検出素子31を外気
に対して連通させる連通口42が設けられる。ガード3
9内には成分検出素子31に対し、通気性を有し、かつ
火炎の漏洩を阻止するチップ状のフレームアレスタ37
が連通口42を塞ぐように設けられる。FIG. 8 shows the guard 39 as shown in FIG.
And is formed in a cap shape as a whole, and as shown in FIG. 9, a female screw 34 provided on the inner surface on the opening side is screwed into a male screw 35 provided on the other end of the pipe 1, and A communication port 42 for communicating the component detection element 31 with the outside air is provided at the bottom of this guard. Guard 3
A flame arrester 37 in the form of a chip is provided inside 9 and has air permeability with respect to the component detection element 31 and prevents leakage of flame.
Are provided so as to close the communication port 42.
【0012】図10に示すものはガード39を図8およ
び図9に示すものと同様にキャップ状に形成したもので
あるが、フレームアレスタ37は筒体44内に充填され
てフレームアレスタユニット45として形成される。そ
してフレームアレスタユニット45はガード39内に収
容された状態で、その筒体44の軸心線が連通口42の
軸心線と一致し、かつフレームアレスタ37がガード3
9の底部に当接するように配設される。さらにフレーム
アレスタユニットはガード39の内壁に設けた雌ねじ4
6と螺合する取付けねじ47によりガード39に固定さ
れる。In FIG. 10, the guard 39 is formed in the shape of a cap like that shown in FIGS. 8 and 9, but the flame arrester 37 is filled in the cylindrical body 44 to form a flame arrester unit 45. It is formed. Then, the frame arrester unit 45 is accommodated in the guard 39, the axis of the cylindrical body 44 thereof coincides with the axis of the communication port 42, and the frame arrester 37 is connected to the guard 3
It is arranged so as to come into contact with the bottom of 9. Further, the flame arrestor unit is a female screw 4 provided on the inner wall of the guard 39.
It is fixed to the guard 39 by means of a mounting screw 47 that is screwed with the screw 6.
【0013】図12および図13に示すものはパイプ1
の他端に筒状のベース33を螺合し、かつこのベースに
は筒状のガード39を取付け、この筒状のガードの端部
およびその外周に成分検出素子31を外気に対して連通
させる連通口42を設け、またこの連通口と成分検出素
子31間において、ベース1に成分検出素子31に対
し、通気性を有し、かつ火炎の漏洩を阻止するキャップ
状のフレームアレスタ37を設けたものである。The pipe shown in FIGS. 12 and 13 is a pipe 1.
A cylindrical base 33 is screwed onto the other end of the cylindrical base 33, and a cylindrical guard 39 is attached to this base, and the component detecting element 31 is communicated with the outside air at the end of the cylindrical guard and its outer periphery. A communication port 42 is provided, and between the communication port and the component detection element 31, a cap-shaped flame arrester 37 is provided on the base 1 that has air permeability with respect to the component detection element 31 and that prevents flame leakage. It is a thing.
【0014】図14、図15および図16はパイプ1の
他端に筒状のベース33を螺合し、このベースには一端
に底部を有するキャップ状のガードが取付けられる。こ
のガードの底部およびその外周には成分検出素子31を
外気に対して連通させる連通口が設けられる。図16に
示すように成分検出素子31に対し、通気性を有し、か
つ火炎の漏洩を阻止するキャップ状のフレームアレスタ
37は連通口42と成分検出素子31間において、連通
口42を塞ぐようにガード39の内面に密着して設けら
れる。14, 15 and 16, a cylindrical base 33 is screwed onto the other end of the pipe 1, and a cap-shaped guard having a bottom portion at one end is attached to this base. A communication port for communicating the component detection element 31 with the outside air is provided at the bottom of the guard and its outer periphery. As shown in FIG. 16, a cap-shaped flame arrester 37 that has air permeability with respect to the component detection element 31 and blocks the leakage of flames closes the communication port 42 between the communication port 42 and the component detection element 31. Is provided in close contact with the inner surface of the guard 39.
【0015】なお、この発明は次の態様により実施され
る。 (1)金属製のパイプ(1)の一端に端子箱(4)を連
結するとともにその他端に筒状のベース(33)を螺合
し、この筒状のベースと上記パイプ(1)間に緩み止め
部材(43)を設け、また上記パイプ(1)の他端に成
分検出素子(31)を取付けるとともに、この成分検出
素子(31)のケーブル(7)の一端を上記端子箱
(4)に、またその他端を上記パイプ(1)を通して上
記成分検出素子(2)に接続し、上記ベース(33)に
は上記成分検出素子(31)を保護する金属線製のガー
ド(39)を取付け、このガードには上記成分検出素子
(31)を外気に対して連通させる連通口(42)を形
成し、上記ガードと上記成分検出素子(31)間におい
て、上記ベース(33)には上記成分検出素子(31)
に対し、通気性を有し、かつ火炎の透過を阻止するキャ
ップ状のフレームアレスタ(37)を上記成分検出素子
(31)を覆うように設けたことを特徴とする防爆用成
分検出装置。 (2)金属製のパイプ(1)の一端に端子箱(4)を連
結するとともにその他他端にキャップ状のガード39を
螺合し、かつこのベースと上記パイプ(1)間に緩み止
め部材を設け、また上記パイプ(1)の他端に成分検出
素子(31)を取付けるとともに、この成分検出素子
(31)のケーブル(7)の一端を、上記端子箱(4)
に、またその他端を上記パイプ(1)を通して上記成分
検出素子(31)に接続し、上記ガード39には上記成
分検出素子(31)を外気に対して連通させる連通口を
設け、かつ上記ガード39には上記成分検出素子(3
1)に対し、通気性を有し、かつ火炎の透過を阻止する
チップ状のフレームアレスタ(37)を上記連通口を塞
ぐように設けたことを特徴とする防爆用成分検出装置。 (3)金属製のパイプ(1)の一端を端子箱(4)に連
結するとともに、その他端に筒状のベース(33)を螺
合し、かつこの筒状のベースと上記パイプ(1)間に緩
み止め部材(43)を設け、また上記パイプ(1)の他
端に成分検出素子(31)を取付けるとともに、この成
分検出素子(31)のケーブル(7)を、上記パイプ
(1)を通して上記端子箱(4)に導き、上記ベース
(33)には上記成分検出素子(31)を外気に対して
連通させる連通口を設け、かつ上記ベース(33)には
上記成分検出素子(31)に対し、通気性を有し、かつ
火炎の透過を阻止するフレームアレスタ(37)を筒体
(44)内に充填したフレームアレスタユニット(4
5)を上記連通口を覆うように取付け、かつそのフレー
ムアレスタユニット(45)を上記ベース(33)の内
側において螺合する取付けねじにより固定することを特
徴とする防爆用成分検出装置。 (4)金属製のパイプ(1)の一端に端子箱(4)を連
結するとともに、その他端に成分検出素子(31)を取
付け、この成分検出素子(31)のケーブル(7)を、
上記パイプ(1)を通して上記端子箱(4)に導き、ま
た上記パイプ(1)の他端に筒状のベース(33)を螺
合し、かつこの筒状のベース(33)と上記パイプ
(1)間に緩み止め部材(43)を設け、さらにこのベ
ース(33)には筒状のガード39を取付けるととも
に、この筒状のガード39の端部およびその外周に上記
成分検出素子(31)を外気に対して連通させる連通口
(42)を設け、またこの連通口と上記成分検出素子
(31)間において上記ベース(33)に上記成分検出
素子(31)に対し、通気性を有し、かつ火炎の透過を
阻止するキャップ状のフレームアレスタ(37)を設け
たことを特徴とする防爆用成分検出装置。 (5)金属製のパイプ(1)の一端を端子箱(4)に連
結するとともに、その他端に筒状のベース(33)を螺
合し、かつこの筒状のベース(33)と上記パイプ
(1)間に緩み止め部材(43)を設け、さらにこのベ
ース(33)には保護筒を取付けるとともに、この保護
筒の端部およびその外周に連通口(42)を設け、また
上記パイプ(1)の他端に成分検出素子(31)を取付
けるとともに、この成分検出素子(31)のケーブル
(7)を、上記パイプ(1)を通して上記端子箱(4)
に導き、上記ベース(33)には保護キャップを取付け
るとともに、この保護キャップの端部およびその外周に
は上記成分検出素子(31)を外気に対して連通させる
連通口(42)を設け、この連通口(42)と上記成分
検出素子(31)間において上記キャップに上記成分検
出素子(31)に対し、通気性を有し、かつ火炎の透過
を阻止するキヤップ状のフレームアレスタ(37)を設
けたことを特徴とする防爆用成分検出装置。 (6)金属製のパイプ(1)の一端を端子箱(4)に連
結するとともに、その他端に筒状のベース(33)を螺
合し、かつこの筒状のベース(33)と上記パイプ
(1)間に緩み止め部材(43)を設け、また上記パイ
プ(1)の他端に成分検出素子(31)を取付けるとと
もに、この成分検出素子(31)のケーブル(7)を、
上記パイプ(1)を通して上記端子箱(4)に導き、上
記ベース(33)には上記成分検出素子(31)を外気
に対して連通させる連通口(42)を設け、この連通口
(42)と上記成分検出素子(31)間には上記成分検
出素子(31)に対し、通気性を有し、かつ火炎の透過
を阻止するフレームアレスタ(37)を設け、一方上記
パイプ(1)の中間部において、このパイプ(1)を2
つに分割し、一方の管部にパイプ取付け用のねじ部を有
する筒状の取付けナット(16)を、また他方の管部に
上記取付けナット(16)と螺合する締め付けナット
(18)を設け、上記取付けナット(16)と上記ケー
ブル(7)間にこれら両者をたがいに気密にシールする
耐圧シール部材を設けたことを特徴とする防爆用成分検
出装置。 (7)金属製のパイプ(1)の一端に端子箱(4)を取
付けるとともに、その他端に筒状のベース(33)を螺
合し、かつこの筒状のベース(33)と上記パイプ
(1)間に緩み止め部材(43)を設け、また上記パイ
プ(1)の他端に成分検出素子(31)を取付けるとと
もに、この成分検出素子(31)のケーブル(7)を、
上記パイプ(1)を通して上記端子箱(4)に導き、か
つ上記パイプ(1)内には重点在()を充填し、上記ベ
ース(33)には上記成分検出素子(31)を外気に対
して連通させる連通口(42)を設け、この連通口と上
記成分検出素子(31)間には上記成分検出素子(3
1)に対し、通気性を有し、かつ火炎の漏洩を阻止する
フレームアレスタ(37)を設け、一方上記パイプ
(1)の中間部において、このパイプ(1)の外周に環
状のストッパーを固定するとともに、外周にパイプ
(1)取付け用のねじ部を有する袋状の取付けナット
(16)(16)を、この内底部が上記ストッパーに上
記パイプ(1)の他端側から当接させて上記パイプ
(1)に取付け、かつ上記パイプ(1)には、上記パイ
プ(1)取付けねじの内壁に設けた雌ねじと螺合する締
め付けねじを上記パイプ(1)の他端側から螺合し、か
つ上記ストッパーと当接する締め付けナット(18)を
設けたことを特徴とする防爆用成分検出装置。 (8)金属製のパイプ(1)の一端に端子箱(4)を取
付けるとともに、その他端を端子箱(4)に連結し、上
記パイプ(1)の他端に筒状のベース(33)を螺合
し、かつこの筒状のベース(33)と上記パイプ(1)
間に緩み止め部材(43)を設け、また上記パイプ
(1)の他端に成分検出素子(31)を取付けるととも
に、この成分検出素子(31)のケーブル(7)を、上
記パイプ(1)を通して上記端子箱(4)に導き、上記
ベース(33)には上記成分検出素子(31)を外気に
対して連通させる連通口(42)を設け、この連通口と
上記成分検出素子(31)間には上記成分検出素子(3
1)に対し、通気性を有し、かつ火炎の漏洩を阻止する
フレームアレスタ(37)を設け、一方上記パイプ
(1)の中間部において、このパイプ(1)を弾力性を
有する環状のシール部材に貫挿するとともに、外周にパ
イプ(1)取付け用のねじ部を有する袋状の取付けナッ
ト(16)を、この内底部が上記シール部材に上記パイ
プ(1)の他端側から当接するように、上記パイプ
(1)に取付け、かつ上記パイプ(1)には、上記パイ
プ(1)取付けねじの内壁に設けた雌ねじと螺合する締
め付けねじを上記パイプ(1)の他端側から螺合し、か
つ上記シール部材と当接する締め付けナット(18)を
設けたことを特徴とする防爆用成分検出装置。The present invention is implemented in the following modes. (1) A terminal box (4) is connected to one end of a metal pipe (1), and a cylindrical base (33) is screwed into the other end, and between the cylindrical base and the pipe (1). A loosening prevention member (43) is provided, a component detecting element (31) is attached to the other end of the pipe (1), and one end of a cable (7) of the component detecting element (31) is connected to the terminal box (4). And the other end is connected to the component detecting element (2) through the pipe (1), and a metal wire guard (39) for protecting the component detecting element (31) is attached to the base (33). The guard is provided with a communication port (42) for communicating the component detecting element (31) with the outside air, and the base (33) has the component between the guard and the component detecting element (31). Detection element (31)
On the other hand, an explosion-proof component detection device, which is provided with a cap-shaped flame arrester (37) that is breathable and that blocks transmission of flames so as to cover the component detection element (31). (2) A terminal box (4) is connected to one end of the metal pipe (1), a cap-shaped guard 39 is screwed to the other end, and a locking member is provided between the base and the pipe (1). And the component detecting element (31) is attached to the other end of the pipe (1), and one end of the cable (7) of the component detecting element (31) is connected to the terminal box (4).
And the other end is connected to the component detecting element (31) through the pipe (1), the guard 39 is provided with a communication port for communicating the component detecting element (31) with the outside air, and the guard is provided. 39 is the above-mentioned component detection element (3
In contrast to 1), the explosion-proof component detecting device is characterized in that it is provided with a chip-shaped flame arrester (37) that is breathable and blocks the penetration of flames so as to close the communication port. (3) One end of the metal pipe (1) is connected to the terminal box (4), and a cylindrical base (33) is screwed to the other end, and the cylindrical base and the pipe (1) are connected. A loosening prevention member (43) is provided therebetween, and a component detecting element (31) is attached to the other end of the pipe (1), and a cable (7) of the component detecting element (31) is connected to the pipe (1). Through the terminal box (4), the base (33) is provided with a communication port for communicating the component detecting element (31) with the outside air, and the base (33) is provided with the component detecting element (31). ), A flame arrester unit (4) in which a flame arrester (37) which has air permeability and blocks the penetration of flame is filled in the cylindrical body (44).
5) An explosion-proof component detecting device, characterized in that 5) is attached so as to cover the communication port, and the flame arrester unit (45) is fixed by a mounting screw that is screwed inside the base (33). (4) The terminal box (4) is connected to one end of the metal pipe (1), the component detection element (31) is attached to the other end, and the cable (7) of the component detection element (31) is connected to the terminal box (4).
It is guided to the terminal box (4) through the pipe (1), and a tubular base (33) is screwed to the other end of the pipe (1), and the tubular base (33) and the pipe (33) 1) A locking member (43) is provided between them, and a cylindrical guard 39 is attached to the base (33), and the component detecting element (31) is provided at the end of the cylindrical guard 39 and its outer periphery. Is provided with a communication port (42) for communicating the air with the outside air, and the base (33) has ventilation between the communication port and the component detection element (31) with respect to the component detection element (31). An explosion-proof component detecting device, further comprising a cap-shaped flame arrester (37) for preventing the transmission of flame. (5) One end of the metal pipe (1) is connected to the terminal box (4), and a cylindrical base (33) is screwed to the other end, and the cylindrical base (33) and the pipe are connected. A loosening prevention member (43) is provided between (1), a protective cylinder is attached to the base (33), and a communication port (42) is provided at an end of the protective cylinder and an outer periphery thereof. The component detection element (31) is attached to the other end of 1), and the cable (7) of this component detection element (31) is passed through the pipe (1) to the terminal box (4).
A protective cap is attached to the base (33), and a communication port (42) for communicating the component detection element (31) with the outside air is provided at the end of the protective cap and the outer periphery thereof. Between the communication port (42) and the component detecting element (31), a cap-shaped flame arrester (37) is provided in the cap, which has air permeability with respect to the component detecting element (31) and prevents the transmission of flame. An explosion-proof component detector characterized by being provided. (6) One end of the metal pipe (1) is connected to the terminal box (4), and a cylindrical base (33) is screwed to the other end, and the cylindrical base (33) and the pipe are connected. A loosening prevention member (43) is provided between (1) and a component detecting element (31) is attached to the other end of the pipe (1), and a cable (7) of this component detecting element (31) is
The base (33) is provided with a communication port (42) for communicating the component detection element (31) with the outside air through the pipe (1) and to the terminal box (4), and the communication port (42). A flame arrester (37) is provided between the component detecting element (31) and the component detecting element (31) so as to be permeable to the component detecting element (31) and to prevent transmission of flame, while the middle of the pipe (1) is provided. Part, this pipe (1) 2
A tubular mounting nut (16) having a threaded portion for pipe mounting on one pipe portion, and a tightening nut (18) screwed to the mounting nut (16) on the other pipe portion. An explosion-proof component detecting device, characterized in that a pressure-proof sealing member is provided between the mounting nut (16) and the cable (7) to hermetically seal the both. (7) The terminal box (4) is attached to one end of the metal pipe (1), and a tubular base (33) is screwed to the other end, and the tubular base (33) and the pipe ( 1) A loosening prevention member (43) is provided between the pipe (1) and the component detecting element (31) is attached to the other end of the pipe (1), and the cable (7) of the component detecting element (31) is
The pipe (1) is led to the terminal box (4), and the pipe (1) is filled with an important point (), and the base (33) is provided with the component detection element (31) for the outside air. A communication port (42) for communicating with each other is provided, and the component detection element (3) is provided between the communication port and the component detection element (31).
In contrast to 1), a flame arrester (37) that is breathable and blocks the leakage of flame is provided, while an annular stopper is fixed to the outer periphery of the pipe (1) at the middle of the pipe (1). In addition, a bag-shaped mounting nut (16) (16) having a threaded portion for mounting the pipe (1) on the outer periphery is brought into contact with the stopper from the other end side of the pipe (1) by the inner bottom portion thereof. Attached to the pipe (1), and the pipe (1), from the other end side of the pipe (1) screw a tightening screw that is screwed with a female screw provided on the inner wall of the pipe (1) mounting screw. And an explosion-proof component detecting device, characterized in that a tightening nut (18) that comes into contact with the stopper is provided. (8) The terminal box (4) is attached to one end of the metal pipe (1), the other end is connected to the terminal box (4), and the tubular base (33) is attached to the other end of the pipe (1). And the cylindrical base (33) and the pipe (1).
A loosening prevention member (43) is provided therebetween, and a component detecting element (31) is attached to the other end of the pipe (1), and a cable (7) of the component detecting element (31) is connected to the pipe (1). Through the terminal box (4) through the base (33), the base (33) is provided with a communication port (42) for communicating the component detection element (31) with the outside air, and the communication port and the component detection element (31). Between the above components detecting element (3
In contrast to 1), a flame arrester (37) that is breathable and blocks the leakage of flame is provided, while at the middle of the pipe (1), the pipe (1) is provided with an elastic annular seal. A bag-shaped mounting nut (16) having a threaded portion for mounting the pipe (1) on its outer periphery is inserted into the member, and its inner bottom portion abuts on the sealing member from the other end side of the pipe (1). As described above, a tightening screw which is attached to the pipe (1) and which is screwed into a female screw provided on the inner wall of the pipe (1) attaching screw is attached to the pipe (1) from the other end side of the pipe (1). An explosion-proof component detection device comprising a tightening nut (18) that is screwed into contact with the seal member.
【0016】[0016]
【発明の効果】以上説明したようにこの発明における防
爆用成分検出装置は連通口と成分検出素子(31)間に
は成分検出素子(31)に対し、通気性を有し、かつ火
炎の透過を阻止するフレームアレスタ(37)を設けて
いるので、爆発性のガスが検出器内で発火してもその火
炎が測定対象となる雰囲気に影響を与えることなく、そ
の雰囲気の成分を検出することができる。同時に、金属
製のパイプ(1)の一端に端子箱(4)を連結するとと
もに、その他端に検出器(2)を取付け、かつそのパイ
プの中間部には取付けナットを有しているため、狭い場
所においてもその取付けが容易で、かつシールが容易と
なる効果がある。As described above, the explosion-proof component detecting device according to the present invention has air permeability to the component detecting element (31) between the communication port and the component detecting element (31), and permeation of flame. Since a flame arrester (37) is provided to prevent this, even if an explosive gas ignites in the detector, the flame does not affect the atmosphere to be measured and the components of that atmosphere can be detected. You can At the same time, since the terminal box (4) is connected to one end of the metal pipe (1), the detector (2) is attached to the other end, and a mounting nut is provided in the middle of the pipe, Even in a narrow space, it is easy to mount and the sealing is easy.
【図1】この発明における防爆用成分検出装置の実施例
を示す外観斜視図である。FIG. 1 is an external perspective view showing an embodiment of an explosion-proof component detecting device according to the present invention.
【図2】この発明における防爆用成分検出装置の縦断面
図である。FIG. 2 is a vertical cross-sectional view of the explosion-proof component detecting device according to the present invention.
【図3】この発明における防爆用成分検出装置の第2の
実施例を示す縦断面図である。FIG. 3 is a longitudinal sectional view showing a second embodiment of the explosion-proof component detecting device according to the present invention.
【図4】この発明における防爆用成分検出装置の第3の
実施例を示す縦断面図である。FIG. 4 is a longitudinal sectional view showing a third embodiment of the explosion-proof component detecting device according to the present invention.
【図5】この発明における防爆用成分検出装置の第4の
実施例を示す縦断面図である。FIG. 5 is a longitudinal sectional view showing a fourth embodiment of the explosion-proof component detecting device according to the present invention.
【図6】この発明における防爆用成分検出装置の検出器
部分の斜視図である。FIG. 6 is a perspective view of a detector portion of the explosion-proof component detecting device according to the present invention.
【図7】この発明における防爆用成分検出装置の検出部
分の縦断面図である。FIG. 7 is a vertical sectional view of a detection portion of the explosion-proof component detection device according to the present invention.
【図8】この発明における防爆用成分検出装置の検出部
分の第2の実施例を示す斜視図である。FIG. 8 is a perspective view showing a second embodiment of the detection portion of the explosion-proof component detection device according to the present invention.
【図9】この発明における防爆用成分検出装置の検出部
分の第2の実施例を示す縦断面図である。FIG. 9 is a vertical cross-sectional view showing a second embodiment of the detecting portion of the explosion-proof component detecting device according to the present invention.
【図10】この発明における防爆用成分検出装置の検出
部分の第3の実施例を示す縦断面図である。FIG. 10 is a longitudinal sectional view showing a third embodiment of the detection portion of the explosion-proof component detection device according to the present invention.
【図11】図10に示すフレームアレスタの斜視図であ
る。11 is a perspective view of the flame arrester shown in FIG.
【図12】この発明における防爆用成分検出装置の検出
部分の第4の実施例を示す斜視図である。FIG. 12 is a perspective view showing a fourth embodiment of the detecting portion of the explosion-proof component detecting device according to the present invention.
【図13】この発明における防爆用成分検出装置の検出
部分の第4の実施例を示す縦断面図である。FIG. 13 is a vertical sectional view showing a fourth embodiment of the detection portion of the explosion-proof component detection device according to the present invention.
【図14】この発明における防爆用成分検出装置の検出
部分の第5の実施例を示す斜視図である。FIG. 14 is a perspective view showing a fifth embodiment of the detecting portion of the explosion-proof component detecting device according to the present invention.
【図15】この発明における防爆用成分検出装置の検出
部分の第6の実施例を示す縦断面図である。FIG. 15 is a vertical sectional view showing a sixth embodiment of the detecting portion of the explosion-proof component detecting device according to the present invention.
【図16】図14および図15に示すフレームアレスタ
の斜視図である。16 is a perspective view of the flame arrester shown in FIGS. 14 and 15. FIG.
1 パイプ 2 検出器 4 端子箱 5 ねじ 7 ケーブル 9 プリント基板 10 外部端子 11 外部配線 12 コンジット 13 ケーブルグランド 15 ねじ部 16 取付けナット 17 ねじ部 18 締め付けナット 19 熔着 21 耐圧シール部材 23 緩み止めねじ 25 ストッパー 27 フランジ 28 取付け孔 29 Oリング 31 成分検出素子 33 ベース 34 雌ねじ 35 雄ねじ 37 フレームアレスタ 38 熔着 39 ガード 40 熔着 42 連通口 43 緩み止め部材 44 筒体 45 フレームアレスタユニット 46 雌ねじ 47 取付けねじ 1 Pipe 2 Detector 4 Terminal Box 5 Screw 7 Cable 9 Printed Circuit Board 10 External Terminal 11 External Wiring 12 Conduit 13 Cable Gland 15 Screw Part 16 Mounting Nut 17 Screw Part 18 Tightening Nut 19 Weld 21 Pressure Resistant Seal Member 23 Loosening Set Screw 25 Stopper 27 Flange 28 Mounting hole 29 O-ring 31 Component detection element 33 Base 34 Female screw 35 Male screw 37 Frame arrester 38 Welding 39 Guard 40 Welding 42 Communication port 43 Loosening prevention member 44 Cylindrical body 45 Frame arrester unit 46 Female screw 47 Mounting screw
Claims (2)
(4)を連結し、その他端に筒状のベース(33)を螺
合し、かつこの筒状のベース(33)と上記パイプ
(1)間に緩み止め部材(43)を設け、また上記パイ
プ(1)の他端に成分検出素子(31)を取付けるとと
もに、この成分検出素子(31)に接続したケーブル
(7)を、上記パイプ(1)を通して上記端子箱(4)
に導き、上記ベース(33)には上記成分検出素子(3
1)を外気に対して連通させる連通口(42)を設け、
この連通口と上記成分検出素子(31)間には上記成分
検出素子(31)に対し、通気性を有し、かつ火炎の透
過を阻止するフレームアレスタ(37)を設けたことを
特徴とする防爆用成分検出装置。1. A terminal box (4) is connected to one end of a metal pipe (1), and a cylindrical base (33) is screwed to the other end, and the cylindrical base (33) and A loosening prevention member (43) is provided between the pipes (1), a component detecting element (31) is attached to the other end of the pipe (1), and a cable (7) connected to the component detecting element (31) is attached. , The terminal box (4) through the pipe (1)
Leading to the component detecting element (3
A communication port (42) for communicating 1) with the outside air is provided,
A flame arrester (37) is provided between the communication port and the component detecting element (31), which has air permeability with respect to the component detecting element (31) and prevents the transmission of flame. Explosion-proof component detector.
(4)を連結し、その他端に筒状のベース(33)を螺
合し、かつこの筒状のベース(33)と上記パイプ
(1)間に緩み止め部材(43)を設け、また上記パイ
プ(1)の他端に成分検出素子(31)を取付けるとと
もに、この成分検出素子(31)に接続したケーブル
(7)を、上記パイプ(1)を通して上記端子箱(4)
に導き、上記ベース(33)には上記成分検出素子(3
1)を外気に対して連通させる連通口(42)を設け、
この連通口と上記成分検出素子(31)間には上記成分
検出素子(31)に対し、通気性を有し、かつ火炎の透
過を阻止するフレームアレスタ(37)を設け、一方上
記パイプ(1)の中間部には上記成分検出器(2)を上
記端子箱(4)とともに取付ける取付け具を設けたこと
を特徴とする防爆用成分検出装置。2. A terminal box (4) is connected to one end of a metal pipe (1), and a cylindrical base (33) is screwed into the other end, and the cylindrical base (33) and A loosening prevention member (43) is provided between the pipes (1), a component detecting element (31) is attached to the other end of the pipe (1), and a cable (7) connected to the component detecting element (31) is attached. , The terminal box (4) through the pipe (1)
Leading to the component detecting element (3
A communication port (42) for communicating 1) with the outside air is provided,
A flame arrester (37) is provided between the communication port and the component detecting element (31) for the component detecting element (31), which has air permeability and blocks the transmission of flame, while the pipe (1) is provided. (3) An explosion-proof component detecting device, characterized in that a fixture for attaching the component detector (2) together with the terminal box (4) is provided in the middle part of (1).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP24528091A JPH0599871A (en) | 1991-06-20 | 1991-06-20 | Component detector for explosion-proof |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP24528091A JPH0599871A (en) | 1991-06-20 | 1991-06-20 | Component detector for explosion-proof |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH0599871A true JPH0599871A (en) | 1993-04-23 |
Family
ID=17131324
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP24528091A Pending JPH0599871A (en) | 1991-06-20 | 1991-06-20 | Component detector for explosion-proof |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0599871A (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6351982B1 (en) * | 1997-08-18 | 2002-03-05 | Zellweger Analytics Limited | Housing for a flammable gas detector |
FR2879037A1 (en) * | 2004-12-02 | 2006-06-09 | Atx Sa | Explosion-proof bushing for explosion-proof case connection, has conductor maintained inside rigid tube formed of cylinder, where cylinder penetrates into case by one of its ends traversing cable gland mounted in opening in wall of case |
JP2007127594A (en) * | 2005-11-07 | 2007-05-24 | Riken Keiki Co Ltd | Explosion-proof type gas detector |
JP2007132695A (en) * | 2005-11-08 | 2007-05-31 | Riken Keiki Co Ltd | Explosion proof type gas sensor |
JP2007155639A (en) * | 2005-12-08 | 2007-06-21 | Riken Keiki Co Ltd | Explosion proof type gas sensor device |
JP2011133304A (en) * | 2009-12-24 | 2011-07-07 | Riken Keiki Co Ltd | Gas measuring instrument |
-
1991
- 1991-06-20 JP JP24528091A patent/JPH0599871A/en active Pending
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6351982B1 (en) * | 1997-08-18 | 2002-03-05 | Zellweger Analytics Limited | Housing for a flammable gas detector |
FR2879037A1 (en) * | 2004-12-02 | 2006-06-09 | Atx Sa | Explosion-proof bushing for explosion-proof case connection, has conductor maintained inside rigid tube formed of cylinder, where cylinder penetrates into case by one of its ends traversing cable gland mounted in opening in wall of case |
JP2007127594A (en) * | 2005-11-07 | 2007-05-24 | Riken Keiki Co Ltd | Explosion-proof type gas detector |
JP4579136B2 (en) * | 2005-11-07 | 2010-11-10 | 理研計器株式会社 | Explosion-proof gas detector |
JP2007132695A (en) * | 2005-11-08 | 2007-05-31 | Riken Keiki Co Ltd | Explosion proof type gas sensor |
JP2007155639A (en) * | 2005-12-08 | 2007-06-21 | Riken Keiki Co Ltd | Explosion proof type gas sensor device |
JP4652964B2 (en) * | 2005-12-08 | 2011-03-16 | 理研計器株式会社 | Explosion-proof gas sensor device |
JP2011133304A (en) * | 2009-12-24 | 2011-07-07 | Riken Keiki Co Ltd | Gas measuring instrument |
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