JP6057469B2 - Heavy oil leak detector - Google Patents

Heavy oil leak detector Download PDF

Info

Publication number
JP6057469B2
JP6057469B2 JP2013112084A JP2013112084A JP6057469B2 JP 6057469 B2 JP6057469 B2 JP 6057469B2 JP 2013112084 A JP2013112084 A JP 2013112084A JP 2013112084 A JP2013112084 A JP 2013112084A JP 6057469 B2 JP6057469 B2 JP 6057469B2
Authority
JP
Japan
Prior art keywords
unit
heavy oil
mesh
detection device
oil leakage
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.)
Active
Application number
JP2013112084A
Other languages
Japanese (ja)
Other versions
JP2014232013A (en
Inventor
昌弘 秦
昌弘 秦
義文 大井
義文 大井
市川 幸司
幸司 市川
克征 高橋
克征 高橋
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shikoku Research Institute Inc
Shikoku Electric Power Co Inc
Original Assignee
Shikoku Research Institute Inc
Shikoku Electric Power Co Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Shikoku Research Institute Inc, Shikoku Electric Power Co Inc filed Critical Shikoku Research Institute Inc
Priority to JP2013112084A priority Critical patent/JP6057469B2/en
Publication of JP2014232013A publication Critical patent/JP2014232013A/en
Application granted granted Critical
Publication of JP6057469B2 publication Critical patent/JP6057469B2/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Landscapes

  • Examining Or Testing Airtightness (AREA)

Description

本発明は、防爆仕様の検知部を備えた重油の漏洩検知装置に関する。   The present invention relates to a heavy oil leakage detection device including an explosion-proof detection unit.

オイルバーナガン(以下、「バーナガン」という)は、ボイラ焚口に設置され、高圧の重油および圧縮空気等をボイラ燃焼室へ導き、先端部に設けられたチップで噴霧し、燃焼させる噴霧機械である。外部から供給される重油や圧縮空気等の流路は、その接続部にガスケットが設けられているが、このガスケットの劣化などを原因とする漏油の問題がある。バーナガンから漏洩した重油は火災の原因となるため、常時監視を行うための手段が必要とされていた。   An oil burner gun (hereinafter referred to as “burner gun”) is a spraying machine that is installed in a boiler shed, guides high-pressure heavy oil, compressed air, etc. to a boiler combustion chamber, sprays it with a tip provided at the tip, and burns it. . A gasket such as heavy oil or compressed air supplied from the outside is provided with a gasket at its connection, but there is a problem of oil leakage due to deterioration of the gasket. Since heavy oil leaked from the burner gun could cause a fire, a means for continuous monitoring was required.

特許文献1では、監視対象物を画像により監視して該監視対象物の状態を把握する画像監視システムであって、監視対象物を撮影する撮像手段と、撮影手段から入力された画像データおよび撮像手段に関する情報に基づいて監視対象物を監視する画像監視部と、画像監視部により生成された監視画像を出力する表示手段と、画像監視部内のデータベース情報の追加、更新、又は削除を操作する入力手段と、を備え、画像監視部が、表示手段上に、監視対象物の撮像画像と共に、監視対象物の配置を示す見取り図と、撮影された監視対象物ごとの監視着眼点とを表示し、見取り図上に監視対象物と撮像手段との位置関係を表示する画像監視システムが提案されており、同文献の段落[0023]には監視対象設備が重油バーナ装置の場合の記載がある。   In Patent Document 1, an image monitoring system that monitors a monitoring object with an image and grasps the state of the monitoring object, an imaging unit that images the monitoring object, image data input from the imaging unit, and imaging An image monitoring unit that monitors a monitoring object based on information on the means, a display unit that outputs a monitoring image generated by the image monitoring unit, and an input that operates to add, update, or delete database information in the image monitoring unit And an image monitoring unit, on the display means, displays a captured image of the monitoring object, a sketch showing the arrangement of the monitoring object, and a monitoring focus point for each captured monitoring object, An image monitoring system that displays the positional relationship between the monitoring object and the imaging means on the floor plan has been proposed, and paragraph [0023] of the same document describes the case where the monitoring target facility is a heavy oil burner device. A.

特開2009−044455号公報JP 2009-044455 A

バーナガンからの漏油の検知装置は、火災の原因とならないように防爆仕様とする必要がある。また、屋外での長期間の連続運用に耐えうる信頼性の高さが必要である。さらには、屋外設置時に生じる雨水や流入ゴミの問題を解決する必要がある。   The oil leakage detection device from the burner gun must be explosion-proof so as not to cause a fire. In addition, high reliability is required to withstand long-term continuous operation outdoors. Furthermore, it is necessary to solve the problem of rainwater and inflowing dust generated when installed outdoors.

本発明は、屋外での長期間の連続運用に耐えうる高信頼性を備えた防爆仕様の重油の漏洩検知装置を提供することを目的とする。   SUMMARY OF THE INVENTION An object of the present invention is to provide an explosion-proof heavy oil leakage detection device with high reliability that can withstand long-term continuous operation outdoors.

発明者は、漏斗部と透明板および光センサ装置を備える検知部(比較例1)により漏油検知の試験運用を行ったところ、降雨時の流入ゴミにより誤検知が発生した。そこで、屋外に設置した場合の流入ゴミの問題を解決すべく改良を加え、本発明を創作した。すなわち、本発明は、以下の技術手段から構成される。   The inventor conducted a test operation for detecting oil leakage using a detection unit (Comparative Example 1) including a funnel portion, a transparent plate, and an optical sensor device, and erroneous detection occurred due to inflowing dust during rainfall. Therefore, the present invention was created by making improvements to solve the problem of inflowing dust when installed outdoors. That is, the present invention comprises the following technical means.

第1の発明は、防爆仕様の検知部と、監視部と、検知部および監視部を接続する光ファイバとを備えた重油の漏洩検知装置であって、検知部が、下部開口を有する漏斗部と、漏斗部の下部開口の下に傾斜をつけて配置された透明板と、透明板を挟んで対向して設けられた投光部および受光部を有する光センサ装置と、漏斗部が上部に配設され、底部に排出口が設けられた筐体とを備え、漏斗部の下部開口の最大幅D1が、漏斗部の下端と透明板との距離D2以下であることを特徴とする重油の漏洩検知装置に関する。   A first aspect of the present invention is a heavy oil leak detection device including an explosion-proof detection unit, a monitoring unit, and an optical fiber connecting the detection unit and the monitoring unit, wherein the detection unit has a lower opening. A transparent plate disposed below the lower opening of the funnel portion, an optical sensor device having a light projecting portion and a light receiving portion provided facing each other across the transparent plate, and the funnel portion at the top And a casing provided with a discharge port at the bottom, and the maximum width D1 of the lower opening of the funnel part is equal to or less than the distance D2 between the lower end of the funnel part and the transparent plate. The present invention relates to a leak detection device.

第2の発明は、第1の発明において、さらに、漏斗部を覆う網であって、前記受光部の検知有効径よりも目の細かい網を備えることを特徴とする。
第3の発明は、第2の発明において、前記網の網目の最大幅dが、漏斗部の下部開口の最大幅D1未満であることを特徴とする。
第4の発明は、第2または3の発明において、前記網の網目が0.1〜3.0mmであることを特徴とする。
第5の発明は、第1ないし4のいずれかの発明において、前記投光部が、前記透明板の下方に配置されることを特徴とする。
The second invention is characterized in that, in the first invention, a mesh covering the funnel portion is provided, the mesh being finer than the effective detection diameter of the light receiving portion.
According to a third aspect, in the second aspect, the maximum width d of the mesh is less than the maximum width D1 of the lower opening of the funnel portion.
A fourth invention is characterized in that, in the second or third invention, the mesh of the mesh is 0.1 to 3.0 mm.
According to a fifth invention, in any one of the first to fourth inventions, the light projecting portion is disposed below the transparent plate.

第6の発明は、第1ないし5のいずれかの発明において、前記光センサ装置が、上流に設けられた第一の投光部および受光部と、下流に設けられた第二の投光部および受光部とを備えることを特徴とする。
第7の発明は、第1ないし6のいずれかの発明において、前記監視部が、前記光センサ装置の受光量が設定値以下である状態が設定時間以上継続した場合に漏油であると判定することを特徴とする。
第8の発明は、第1ないし7のいずれかの発明において、前記検知部を複数台備えることを特徴とする。
According to a sixth invention, in any one of the first to fifth inventions, the optical sensor device includes a first light projecting unit and a light receiving unit provided upstream, and a second light projecting unit provided downstream. And a light receiving portion.
According to a seventh invention, in any one of the first to sixth inventions, the monitoring unit determines that the oil is leaked when a state where the amount of light received by the optical sensor device is equal to or less than a set value continues for a set time or longer. It is characterized by doing.
An eighth invention is characterized in that, in any one of the first to seventh inventions, a plurality of the detection units are provided.

本発明によれば、屋外での長期間の連続運用に耐えうる高信頼性を備えた防爆仕様の重油の漏洩検知装置を提供することが可能となる。   ADVANTAGE OF THE INVENTION According to this invention, it becomes possible to provide the leak detection apparatus of the explosion-proof heavy oil provided with the high reliability which can endure long-term continuous operation outdoors.

実施例1に係る重油の漏洩検知装置の構成図である。1 is a configuration diagram of a heavy oil leakage detection apparatus according to Embodiment 1. FIG. 実施例1に係る検知部の構成を示す側面断面図である。FIG. 3 is a side cross-sectional view illustrating a configuration of a detection unit according to the first embodiment. 実施例1に係る検知部の構成を示す平面図である。FIG. 3 is a plan view illustrating a configuration of a detection unit according to the first embodiment. (a)比較例1に係る試験運用の結果を示すグラフ、(b)実施例1に係る試験運用の結果を示すグラフである。(A) The graph which shows the result of the test operation which concerns on the comparative example 1, (b) The graph which shows the result of the test operation which concerns on Example 1. FIG. 実施例2に係る重油の漏洩検知装置の構成図である。6 is a configuration diagram of a heavy oil leakage detection device according to Embodiment 2. FIG.

実施形態例に係る本発明の重油の漏洩検知装置は、防爆仕様の検知部と、監視部と、検知部および監視部を接続する光ファイバとを備えている。この検知部は、下部開口を有する漏斗部と、漏斗部の下部開口の下に傾斜をつけて配置された透明板と、透明板を挟んで対向して設けられた投光部および受光部を有する光センサ装置と、漏斗部が上部に配設され、底部に排出口が設けられた筐体とを備えて構成される。実施形態例に係る本発明の検知部は屋外設置用であり、雨水や流入ゴミの問題を解決するための次の特徴を有する。   The heavy oil leakage detection device of the present invention according to the embodiment includes an explosion-proof detection unit, a monitoring unit, and an optical fiber connecting the detection unit and the monitoring unit. The detection unit includes a funnel portion having a lower opening, a transparent plate arranged with an inclination below the lower opening of the funnel portion, and a light projecting portion and a light receiving portion provided to face each other across the transparent plate. And a housing having a funnel portion disposed at the top and a discharge port provided at the bottom. The detection unit of the present invention according to the embodiment is for outdoor installation and has the following characteristics for solving the problem of rainwater and inflowing dust.

第一の特徴は、漏斗部の下部開口の最大幅D1が、漏斗部の下端と透明板との距離D2以下であることである。これにより、漏斗部の下端と透明板との間にゴミが詰まることを防いでいる。
第二の特徴は、漏斗部を覆う網であって、受光部の検知有効径よりも目の細かい網を備えることである。網により大粒のゴミの侵入が阻止されることにより、受光部が完全に遮蔽されることを防いでいる。
第三の特徴は、網の網目の最大幅dが、漏斗部の下部開口の最大幅D1未満であることである。これにより、検知部にゴミが侵入しても容易に排出されるようにしている。
第四の特徴は、監視部が、光センサ装置の受光量が設定値以下である状態が設定時間以上継続した場合に漏油であると判定することである。小さなゴミが1つ流入しても受光部が遮蔽されることはないが、複数のゴミが光路上に重なった場合、誤検知に至るおそれがある。しかし、雨水と共に流入するゴミは数秒で光路上を通過するため、例えば5秒以上にわたり受光が遮断された場合を漏油と判定することで、誤検知を防ぐことができる。
第五の特徴は、上流と下流に配置される二つの光センサ装置を備えることである。重油による遮蔽の場合は、二つの光センサ装置の受光量低下が一定時間継続するので、ゴミとの判別が可能となる。
The first feature is that the maximum width D1 of the lower opening of the funnel portion is equal to or less than the distance D2 between the lower end of the funnel portion and the transparent plate. This prevents clogging of dust between the lower end of the funnel portion and the transparent plate.
The second feature is that the net covers the funnel part and has a finer mesh than the effective detection diameter of the light receiving part. By blocking the entry of large particles of dust by the net, the light receiving portion is prevented from being completely shielded.
A third feature is that the maximum mesh width d is less than the maximum width D1 of the lower opening of the funnel portion. Thereby, even if dust enters the detection unit, it is easily discharged.
A fourth feature is that the monitoring unit determines that the oil leaks when a state in which the received light amount of the optical sensor device is equal to or less than a set value continues for a set time or longer. Even if one small dust flows in, the light receiving unit is not shielded, but if a plurality of dusts overlap on the optical path, there is a risk of erroneous detection. However, since the dust flowing in along with the rainwater passes on the optical path in a few seconds, it is possible to prevent erroneous detection by determining the oil leakage when the received light is blocked for, for example, 5 seconds or more.
A fifth feature is that two optical sensor devices are provided upstream and downstream. In the case of shielding with heavy oil, since the decrease in the amount of light received by the two photosensor devices continues for a certain period of time, it can be distinguished from dust.

本発明の検知部は、光ファイバにより監視部と接続されるため、検知部を監視部から数百m離れた距離に設置することも可能である。また、検知原理がシンプルであり、監視に伴う情報量も少ないため、数百台以上の検知部を設置することも可能である。   Since the detection part of this invention is connected with a monitoring part by an optical fiber, it is also possible to install a detection part in the distance several hundred m away from the monitoring part. Further, since the detection principle is simple and the amount of information accompanying monitoring is small, it is possible to install several hundred or more detection units.

以下では、本発明の詳細を実施例により検討するが、本発明は何ら実施例に限定されるものではない。   Hereinafter, the details of the present invention will be discussed with reference to examples, but the present invention is not limited to the examples.

実施例1の重油の漏洩検知装置は、一台又は複数台の検知部と、検知部と光ファイバで接続される監視部とを主要な構成要素とする。
図1は、実施例1に係る重油の漏洩検知装置の構成図である。図1に示すように、検知部10A〜Nは、重油の漏洩のおそれがあるバーナガン1A〜Nの近くに(通常は直下に)配置される。バーナガン1A〜Nは、重油を燃料とする重油バーナーであり、屋外(風雨が侵入する屋根付きの場所を含む)に設置される。監視部は、監視装置20と制御装置30とから構成される。
The heavy oil leakage detection apparatus according to the first embodiment includes one or more detection units and a monitoring unit connected to the detection units by optical fibers as main components.
FIG. 1 is a configuration diagram of a heavy oil leakage detection apparatus according to the first embodiment. As shown in FIG. 1, the detection units 10 </ b> A to 10 </ b> N are arranged near the burner guns 1 </ b> A to 1 </ b> N that are likely to leak heavy oil (usually directly below). The burner guns 1A to 1N are heavy oil burners that use heavy oil as fuel, and are installed outdoors (including places with roofs where wind and rain enter). The monitoring unit includes a monitoring device 20 and a control device 30.

[検知部]
図2は、実施例1に係る検知部10の構成を示す断面図である。この検知部10は、漏斗部11と、漏斗部の下部開口の下に傾斜をつけて配置された透明板12と、光センサ装置(13,14)と、底部に排出口が設けられた筐体15と、網19とを備える。
[Detector]
FIG. 2 is a cross-sectional view illustrating a configuration of the detection unit 10 according to the first embodiment. The detection unit 10 includes a funnel unit 11, a transparent plate 12 that is disposed below the lower opening of the funnel unit, an optical sensor device (13, 14), and a housing provided with a discharge port at the bottom. A body 15 and a net 19 are provided.

漏斗部11は、略立方体形状の筐体15の上部に着脱自在に配設される。光センサ装置に太陽光が入射しないようにするためには、漏斗部11を遮光性の材料で構成する必要があり、また雨水による錆を防ぐ必要があることから、本実施例ではステンレス鋼により構成している。バーナガン1からの漏油は、高圧により周辺に飛散するため、漏斗部11の面積は数十センチ四方あれば足りる。   The funnel portion 11 is detachably disposed on an upper portion of a substantially cubic housing 15. In order to prevent sunlight from entering the optical sensor device, the funnel portion 11 must be made of a light-shielding material, and it is necessary to prevent rust caused by rainwater. It is composed. Since the oil leakage from the burner gun 1 scatters to the periphery due to the high pressure, it is sufficient that the area of the funnel portion 11 is several tens of centimeters.

図3は、実施例1に係る検知部10の構成を示す平面図である。
漏斗部11は、上面視正方形であり、四辺から中央部に向かう傾斜面が形成されており、最深部となる中央部には下部開口16が設けられている。下部開口16は、透明板12と対向するように、図2に示すように略水平方向に向かって形成されているので、太陽光の入射は最小限である。下部開口16の最大幅D1(実施例1では上下方向の開口長)は、透明板12と漏斗部11下端との距離D2以下となるようになっている。このような構成とすることで、下部開口16を通過したゴミが、漏斗部11の下端と透明板12との間に詰まることを防いでいる。
FIG. 3 is a plan view illustrating the configuration of the detection unit 10 according to the first embodiment.
The funnel portion 11 has a square shape when viewed from above, and has inclined surfaces from the four sides toward the central portion, and a lower opening 16 is provided at the central portion, which is the deepest portion. Since the lower opening 16 is formed in the substantially horizontal direction as shown in FIG. 2 so as to face the transparent plate 12, the incidence of sunlight is minimal. The maximum width D1 (the opening length in the vertical direction in the first embodiment) of the lower opening 16 is equal to or less than the distance D2 between the transparent plate 12 and the lower end of the funnel portion 11. With such a configuration, dust that has passed through the lower opening 16 is prevented from being clogged between the lower end of the funnel portion 11 and the transparent plate 12.

透明板12は、例えば、アクリル板、ガラス板により構成される。透明板12は、定期的に交換または洗浄ができるように着脱自在に取り付けられている。透明板12は、その表面にゴミや雨水が残留しないように、例えば、35〜55度、好ましくは45度の傾斜をつけて設置する。   The transparent plate 12 is composed of, for example, an acrylic plate or a glass plate. The transparent plate 12 is detachably attached so that it can be periodically replaced or cleaned. The transparent plate 12 is installed with an inclination of, for example, 35 to 55 degrees, preferably 45 degrees so that dust and rainwater do not remain on the surface.

投光部13は、透明板12の下方かつ漏洩した重油が通過する流路と重なる位置に設置されるレンズ手段である。受光部14は、投光部13からの投光を受光するレンズ手段であって、透明板12を挟んで投光部13と対向するように設置される。受光部14を透明板の下方に置かず、投光部14を透明板12の下方に置いたのは、太陽光の影響を受けないようにするためである。投光部13は投光用光ファイバ3に、受光部14は受光用光ファイバ4にそれぞれ接続される。   The light projecting unit 13 is lens means installed below the transparent plate 12 and at a position overlapping the flow path through which leaked heavy oil passes. The light receiving unit 14 is a lens unit that receives the light projected from the light projecting unit 13 and is disposed so as to face the light projecting unit 13 with the transparent plate 12 interposed therebetween. The reason why the light receiving unit 14 is not placed below the transparent plate and the light projecting unit 14 is placed below the transparent plate 12 is to avoid the influence of sunlight. The light projecting unit 13 is connected to the light projecting optical fiber 3, and the light receiving unit 14 is connected to the light receiving optical fiber 4.

筐体15は、遮光性の材料で構成された箱であり、透明板12や光センサ装置に日光や風雨が到達するのを防ぐカバーの役割を奏するものである。実施例1では筐体15をステンレス鋼により構成した。筐体15の底面には、透明板12の斜面下端となる位置に、ゴミや雨水を排出するための排出口17が設けられている。また、筐体15の底面には、排出されたゴミや雨水が筐体15内に戻ってこないように脚部を設けた。筐体15の側面にはコネクタ18が配設されており、コネクタ18から外部に光ファイバ3,4が延出されている。   The housing | casing 15 is a box comprised with the light-shielding material, and plays the role of the cover which prevents that sunlight and a wind and rain reach | attain the transparent plate 12 and an optical sensor apparatus. In the first embodiment, the casing 15 is made of stainless steel. On the bottom surface of the housing 15, a discharge port 17 for discharging dust and rainwater is provided at a position that is the lower end of the slope of the transparent plate 12. In addition, legs are provided on the bottom surface of the casing 15 so that discharged dust and rainwater do not return into the casing 15. A connector 18 is disposed on the side surface of the housing 15, and optical fibers 3 and 4 extend from the connector 18 to the outside.

網19は、受光部14の検知有効径(φR)よりも網目dが細かく、かつ、一定以上の網目を有する金網である(d<R)。一定以上の網目が必要であるのは、重油の粘性により重油が金網を通過しなかったり、通過に著しい遅延が生じたりする場合があるからである。例えば、不織布を用いた実験では、重油が不織布を通過しないことが確認された。さらに、発明者は、複数種類の網目の大きさの金網を準備し、重油の通過時間を測定する実験を行った。この実験は、異なる編み目の金網A〜Kの上に重油を垂らし、10cm下方の受け皿に落下するまでの時間をストップウォッチで測定することにより行った。実験環境の気温は14.5℃である。実験の結果を表1および表2に示す。   The mesh 19 is a metal mesh having a mesh d smaller than the effective detection diameter (φR) of the light receiving unit 14 and having a mesh of a certain level or more (d <R). The reason why the mesh of a certain level or more is necessary is that the heavy oil may not pass through the wire mesh due to the viscosity of the heavy oil, or the passage may be significantly delayed. For example, in an experiment using a nonwoven fabric, it was confirmed that heavy oil did not pass through the nonwoven fabric. Furthermore, the inventor prepared a wire mesh having a plurality of mesh sizes, and conducted an experiment for measuring the passage time of heavy oil. This experiment was carried out by hanging heavy oil on the wire meshes A to K of different stitches and measuring the time until it dropped on the saucer 10 cm below with a stopwatch. The temperature of the experimental environment is 14.5 ° C. The results of the experiment are shown in Tables 1 and 2.

表1から、常温では、網目の大きさ(0.1〜3.0mm)に応じて重油が金網を透過する時間に8〜125秒のバラツキが生じることが確認できた。
表2から、重油の温度が60℃前後である場合には、網目の大きさ(0.1〜3.0mm)により透過時間に多少の差は生じるものの、いずれも数秒以内に重油は金網を透過した。
バーナガン1から漏洩する重油は高温であり、網19到達時でも60℃程度はあると想定される。従って、網目の大きさ(目開きまたは開き目という場合もある)が0.1〜3.0mmであれば充分実用に耐えうる速さで漏油を検知することができると考えられ、特に0.5〜3.0mmであれば遅延時間は全く問題にならないと考えられる。他方、バーナガン1の設置場所では1cm四方程度の鉄錆片が散見されるところ、網目の大きさは2.0mm以下とすることが好ましい。以上より、網目の大きさの最も好ましい実用範囲は、0.5〜2.0mmであると考える。
From Table 1, it was confirmed that at room temperature, a variation of 8 to 125 seconds occurred in the time for heavy oil to pass through the wire mesh according to the size of the mesh (0.1 to 3.0 mm).
From Table 2, when the temperature of heavy oil is around 60 ° C., there is a slight difference in the transmission time depending on the size of the mesh (0.1 to 3.0 mm). Transmitted.
It is assumed that the heavy oil leaking from the burner gun 1 has a high temperature, and is about 60 ° C. even when reaching the net 19. Therefore, it is considered that oil leakage can be detected at a speed that can sufficiently withstand practical use when the mesh size (also referred to as an opening or an opening) is 0.1 to 3.0 mm. If it is .5 to 3.0 mm, the delay time is considered not to be a problem at all. On the other hand, in the place where the burner gun 1 is installed, it is preferable that the size of the mesh be 2.0 mm or less where iron rust pieces of about 1 cm square are scattered. From the above, it is considered that the most preferable practical range of the mesh size is 0.5 to 2.0 mm.

[監視装置]
監視装置20は、光電センサ21と、シーケンサ22と、通信部23とを備える。
光電センサ20は、光ファイバ3,4と接続されており、0〜4000の数値で受光量を表示する。光電センサ20は、投光部13から透明板12に向かって投光させるための投光素子と、受光部14が受光した光を受光する受光素子を備えており、受光素子から出力される検出受光信号はシーケンサ22に送信される。
[Monitoring device]
The monitoring device 20 includes a photoelectric sensor 21, a sequencer 22, and a communication unit 23.
The photoelectric sensor 20 is connected to the optical fibers 3 and 4 and displays the received light amount with a numerical value of 0 to 4000. The photoelectric sensor 20 includes a light projecting element for projecting light from the light projecting unit 13 toward the transparent plate 12, and a light receiving element that receives light received by the light receiving unit 14, and detection output from the light receiving element. The light reception signal is transmitted to the sequencer 22.

シーケンサ22は、演算装置と、主記憶装置と、外部記憶装置とを備え、受光素子からの検出信号を外部記憶装置に連続記録する。シーケンサー22は、ユーザが設定した受光量を下回った場合には、漏油があったと判定する判定部を備える。この判定部は、受光量のみならず、受光量の低下が一定時間以上継続した場合にのみ漏油があったと判定する機能も備えている。後述するように、阿南発電所での試験運用では、網目2.0mmの金網を設置し、受光量10以下を5秒継続すると警報を発する設定としたところ、5ヶ月以上にわたり誤検知が生じなかった。
通信部23は、無線または有線の通信装置である。判定部が漏油があったと判定した場合は、通信部23を介して漏油検知情報が制御装置30に送信される。
The sequencer 22 includes an arithmetic device, a main storage device, and an external storage device, and continuously records detection signals from the light receiving elements in the external storage device. The sequencer 22 includes a determination unit that determines that there has been an oil leak when the amount of received light set by the user is below. This determination unit has not only the amount of received light but also a function of determining that there has been an oil leak only when the decrease in the amount of received light continues for a certain time or longer. As will be described later, in the test operation at the Anan Power Plant, a 2.0 mm mesh wire mesh is installed and an alarm is issued when the received light intensity of 10 or less continues for 5 seconds. No false detection occurs for more than 5 months. It was.
The communication unit 23 is a wireless or wired communication device. If the determination unit determines that there has been an oil leak, the oil leak detection information is transmitted to the control device 30 via the communication unit 23.

[制御装置]
制御装置30は、監視装置20と通信を行うための専用ソフトウェアがインストールされたパネルPCである。制御装置30は、警報を発報するためのブザーと、ブザーからの発報を停止するためのブザー停止ボタンを備えている。制御装置30は、無線または有線で監視装置20と通信し、画面上にリアルタイムで各検知部10A〜Nにおける受光量を表示することができる。
[Control device]
The control device 30 is a panel PC in which dedicated software for communicating with the monitoring device 20 is installed. The control device 30 includes a buzzer for issuing a warning and a buzzer stop button for stopping the notification from the buzzer. The control device 30 communicates with the monitoring device 20 wirelessly or by wire, and can display the amount of light received by each of the detection units 10A to 10N on the screen in real time.

[試験運用]
図4(a)は比較例1に係る試験運用の結果を示すグラフ、(b)は実施例1に係る試験運用の結果を示すグラフである。
(比較例1)
比較例1は、漏斗部と透明板および光センサ装置を備える検知部であるが、上述した流入ゴミの問題を解決するための第一ないし第五の特徴を備えていない。
平成24年6月18日から6月29日まで、比較例1の検知部を阿南発電所のバーナコーナー周辺に設置し、光センサ装置の受光量を継続記録した。その結果、降水時に4度の誤検知が生じた。
[Test operation]
4A is a graph showing the results of the test operation according to Comparative Example 1, and FIG. 4B is a graph showing the results of the test operation according to Example 1. FIG.
(Comparative Example 1)
Although the comparative example 1 is a detection part provided with the funnel part, the transparent plate, and the optical sensor device, it does not include the first to fifth features for solving the problem of the inflowing dust described above.
From June 18, 2012 to June 29, the detector of Comparative Example 1 was installed around the burner corner of the Anan Power Station, and the amount of light received by the optical sensor device was continuously recorded. As a result, 4 degrees of false detection occurred during precipitation.

(実施例1)
平成24年8月29日から9月10日まで、実施例1の検知部10を阿南発電所のバーナコーナー周辺に設置し、光センサ装置の受光量を継続記録した。その結果、降水量の多い日が何日もあったにもかかわらず、誤検知は生じなかった。
以上の結果から、実施例1の重油の漏洩検知装置が、ノーメンテナンスで誤検知を生じること無く運用可能であることが確認された。
Example 1
From August 29 to September 10, 2012, the detection unit 10 of Example 1 was installed around the burner corner of the Anan Power Station, and the amount of light received by the optical sensor device was continuously recorded. As a result, there were no false detections even though there were many days with heavy precipitation.
From the above results, it was confirmed that the heavy oil leakage detection device of Example 1 can be operated without causing false detection in no maintenance.

実施例2の重油の漏洩検知装置は、二組の投光部および受光部を備える点で実施例1の重油の漏洩検知装置と相違する。以下では、実施例1と異なる構成について説明し、共通する構成についての説明は割愛する。   The heavy oil leakage detection device of the second embodiment is different from the heavy oil leakage detection device of the first embodiment in that it includes two sets of light projecting units and light receiving units. Hereinafter, a configuration different from that of the first embodiment will be described, and a description of a common configuration will be omitted.

図5は、実施例2に係る検知部10の構成を示す断面図である。図5に示すように、実施例の検知部10は、上流に設けられた投光部13Aおよび受光部14A、下流に設けられた投光部13Bおよび受光部14Bを備える。投光部13Aおよび受光部14Aと投光部13Bおよび受光部14Bは、重油が流下する流路上(透明板12の中心線上)に設けられている。漏洩した重油の量が少ない場合、下流側の投光部13Bに到達する油の量が少なくなるおそれがあるため、投光部13Aおよび投光部13Bはできるだけ近接配置することが好ましい。他方で、投光部13Aおよび投光部13B間の距離Lを短くしすぎると、両投光部が流入ゴミによりほぼ同時に遮蔽される場合が想定される。よって、投光部13Aおよび投光部13B間の距離Lは、15〜30mm程度に設定するのが現実的であると考えられる。   FIG. 5 is a cross-sectional view illustrating a configuration of the detection unit 10 according to the second embodiment. As shown in FIG. 5, the detection unit 10 of the embodiment includes a light projecting unit 13A and a light receiving unit 14A provided upstream, and a light projecting unit 13B and a light receiving unit 14B provided downstream. The light projecting unit 13A, the light receiving unit 14A, the light projecting unit 13B, and the light receiving unit 14B are provided on a flow path (on the center line of the transparent plate 12) through which heavy oil flows. When the amount of leaked heavy oil is small, the amount of oil reaching the downstream light projecting unit 13B may be reduced. Therefore, the light projecting unit 13A and the light projecting unit 13B are preferably arranged as close as possible. On the other hand, if the distance L between the light projecting unit 13A and the light projecting unit 13B is too short, it is assumed that both the light projecting units are shielded almost simultaneously by the inflowing dust. Therefore, it is considered realistic to set the distance L between the light projecting unit 13A and the light projecting unit 13B to about 15 to 30 mm.

実施例2の漏洩検知装置も、実施例1と同様に、監視装置20および制御装置30とを備えている。実施例2の監視装置20は、受光部14Aが受光量の低下を検知した後、一定時間経過後に受光部14Bが受光量の低下を検知した場合に漏油があったと判定する。この際、設定する距離Lが短い場合などには、受光部14Aが受光量の低下を検知した後、受光部14Aおよび14Bの受光量が一定時間以上低下することを漏油判定の付加的条件としてもよい。   Similarly to the first embodiment, the leak detection apparatus according to the second embodiment also includes a monitoring device 20 and a control device 30. The monitoring device 20 according to the second embodiment determines that oil leakage has occurred when the light receiving unit 14B detects a decrease in the amount of received light after a certain period of time has elapsed after the light receiving unit 14A has detected the decrease in the amount of received light. At this time, when the distance L to be set is short, for example, after the light receiving unit 14A detects a decrease in the amount of received light, an additional condition for determining the oil leakage is that the amount of light received by the light receiving units 14A and 14B decreases for a certain time or more It is good.

以上に説明した実施例2の重油の漏洩検知装置によれば、実施例1の重油の漏洩検知装置と比べ、流入ゴミによる誤判定の問題をより高精度に解消することが可能である。   According to the heavy oil leakage detection device of the second embodiment described above, it is possible to resolve the problem of erroneous determination due to inflowing dust with higher accuracy than the heavy oil leakage detection device of the first embodiment.

1 バーナガン
2 重油
3 投光用光ファイバ
4 受光用光ファイバ
10 検知部
11 漏斗
12 透明板
13 受光部
14 投光部
15 筐体
16 下部開口
17 排出口
18 コネクタ
19 網
20 監視装置
21 光電センサ
22 シーケンサ
23 通信部
30 制御装置
DESCRIPTION OF SYMBOLS 1 Burner gun 2 Heavy oil 3 Optical fiber for light emission 4 Optical fiber for light reception 10 Detection part 11 Funnel 12 Transparent plate 13 Light reception part 14 Light emission part 15 Case 16 Lower opening 17 Outlet 18 Connector 19 Network 20 Monitoring device 21 Photoelectric sensor 22 Sequencer 23 Communication unit 30 Control device

Claims (8)

防爆仕様の検知部と、監視部と、検知部および監視部を接続する光ファイバとを備えた重油の漏洩検知装置であって、
検知部が、下部開口を有する漏斗部と、漏斗部の下部開口の下に傾斜をつけて配置された透明板と、透明板を挟んで対向して設けられた投光部および受光部を有する光センサ装置と、漏斗部が上部に配設され、底部に排出口が設けられた筐体とを備え、
漏斗部の下部開口の最大幅D1が、漏斗部の下端と透明板との距離D2以下であることを特徴とする重油の漏洩検知装置。
A fuel oil leakage detection device comprising an explosion-proof detection unit, a monitoring unit, and an optical fiber connecting the detection unit and the monitoring unit,
The detection unit includes a funnel portion having a lower opening, a transparent plate disposed with an inclination below the lower opening of the funnel portion, and a light projecting unit and a light receiving unit provided to face each other with the transparent plate interposed therebetween. An optical sensor device, and a funnel portion disposed at the top and a housing provided with a discharge port at the bottom,
The heavy oil leakage detection device, wherein the maximum width D1 of the lower opening of the funnel portion is equal to or less than the distance D2 between the lower end of the funnel portion and the transparent plate.
さらに、漏斗部を覆う網であって、前記受光部の検知有効径よりも目の細かい網を備えることを特徴とする請求項1の重油の漏洩検知装置。   The heavy oil leakage detection device according to claim 1, further comprising a mesh covering the funnel portion, the mesh being finer than the effective detection diameter of the light receiving portion. 前記網の網目の最大幅dが、漏斗部の下部開口の最大幅D1未満であることを特徴とする請求項2の重油の漏洩検知装置。   The heavy oil leakage detection device according to claim 2, wherein a maximum width d of the mesh of the mesh is less than a maximum width D1 of a lower opening of the funnel portion. 前記網の網目が0.1〜3.0mmであることを特徴とする請求項2または3の重油の漏洩検知装置。   The heavy oil leakage detection device according to claim 2 or 3, wherein the mesh has a mesh size of 0.1 to 3.0 mm. 前記投光部が、前記透明板の下方に配置されることを特徴とする請求項1ないし4のいずれかの重油の漏洩検知装置。   The heavy oil leakage detection device according to claim 1, wherein the light projecting unit is disposed below the transparent plate. 前記光センサ装置が、上流に設けられた第一の投光部および受光部と、下流に設けられた第二の投光部および受光部とを備えることを特徴とする請求項1ないし5のいずれかの重油の漏洩検知装置。   6. The optical sensor device according to claim 1, further comprising: a first light projecting unit and a light receiving unit provided upstream, and a second light projecting unit and a light receiving unit provided downstream. Any heavy oil leak detection device. 前記監視部が、前記光センサ装置の受光量が設定値以下である状態が設定時間以上継続した場合に漏油であると判定することを特徴とする請求項1ないし6のいずれかの重油の漏洩検知装置。   The fuel oil according to any one of claims 1 to 6, wherein the monitoring unit determines that the oil is leaked when a state in which the amount of light received by the optical sensor device is equal to or less than a set value continues for a set time or longer. Leak detection device. 前記検知部を複数台備えることを特徴とする請求項1ないし6のいずれかの重油の漏洩検知装置。   The heavy oil leakage detection device according to claim 1, comprising a plurality of the detection units.
JP2013112084A 2013-05-28 2013-05-28 Heavy oil leak detector Active JP6057469B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2013112084A JP6057469B2 (en) 2013-05-28 2013-05-28 Heavy oil leak detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2013112084A JP6057469B2 (en) 2013-05-28 2013-05-28 Heavy oil leak detector

Publications (2)

Publication Number Publication Date
JP2014232013A JP2014232013A (en) 2014-12-11
JP6057469B2 true JP6057469B2 (en) 2017-01-11

Family

ID=52125488

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2013112084A Active JP6057469B2 (en) 2013-05-28 2013-05-28 Heavy oil leak detector

Country Status (1)

Country Link
JP (1) JP6057469B2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6336509B2 (en) * 2016-04-27 2018-06-06 共立建設株式会社 Ceiling leak detector

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59108245U (en) * 1983-01-11 1984-07-21 三菱重工業株式会社 Heavy oil slurry leak detection device
JPH0690105B2 (en) * 1989-08-07 1994-11-14 東光精機株式会社 Oil leak detector
JPH06105197B2 (en) * 1989-11-17 1994-12-21 東光精機株式会社 Oil leak detection method and its detection device
JP4537568B2 (en) * 2000-12-08 2010-09-01 株式会社ティアンドティ Leak sensor
JP2003344212A (en) * 2002-05-27 2003-12-03 Sunx Ltd Liquid leakage sensor
JP2012154751A (en) * 2011-01-25 2012-08-16 Chugoku Electric Power Co Inc:The Liquid fuel leakage alarm system

Also Published As

Publication number Publication date
JP2014232013A (en) 2014-12-11

Similar Documents

Publication Publication Date Title
CN105374154A (en) Point type active smoke detector with or without gas production tube, and air sampling system
CN101135630B (en) Particle detector and the method improvement and smoke detector
CN102436712B (en) Combination smoke and heat detector
JP5640247B2 (en) Photoelectric smoke detector and suction smoke detection system
TW201530112A (en) Addressability in particle detection
JP6428381B2 (en) Fluid leak detection device
CN102935275B (en) A kind of test method and device evaluating total flooding extinguishing property
US20080264039A1 (en) Structure and method to verify diesel particulate filter operation
JP6057469B2 (en) Heavy oil leak detector
JP5876347B2 (en) Hydrogen flame visualization apparatus and method
US8346500B2 (en) Self check-type flame detector
CN209167066U (en) A kind of novel air corpuscular counter
KR101727564B1 (en) Water level meagurement apparatus possible of ultrasonic water level shooting in enclosed space
US20230011225A1 (en) Continuous dust accumulation monitoring system with impaired optics detection and cleaning
AU2010296349B2 (en) Slag monitoring device for coal gasifier and coal gasifier
CN101369371A (en) Large spacing fire disaster detection system with fire disaster coordinate setting and fire disaster temperature real-time analysis ability
JP6942597B2 (en) Fire alarm device
CN209297460U (en) A kind of agricultural warehouse fire alarm installation
CN102413316A (en) Member integrity monitoring system and method
CN102788179A (en) Novel wrong gas cut-off prevention electronic safety monitor
RU85716U1 (en) SMOKE CAMERA FOR OPTICAL-ELECTRONIC FIRE SMOKE DETECTOR
CN207395848U (en) A kind of dust bag dust charge level photoelectric detection system
TW201926269A (en) Kitchen condition alert method and kitchen condition alert system
CN209182951U (en) A kind of intelligent fire optical detector of fire smoke for the detection that can periodically cruise
RU124964U1 (en) COMPLEX OF FIRE ALARM AND GAS CONTROL OF A DANGEROUS INDUSTRIAL OBJECT

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20160329

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20161116

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20161129

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20161205

R150 Certificate of patent or registration of utility model

Ref document number: 6057469

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250