JPS58147635A - Spontaneous ignition monitoring device open-air storage of coal - Google Patents

Spontaneous ignition monitoring device open-air storage of coal

Info

Publication number
JPS58147635A
JPS58147635A JP57030360A JP3036082A JPS58147635A JP S58147635 A JPS58147635 A JP S58147635A JP 57030360 A JP57030360 A JP 57030360A JP 3036082 A JP3036082 A JP 3036082A JP S58147635 A JPS58147635 A JP S58147635A
Authority
JP
Japan
Prior art keywords
temperature
scanning
coal
open
spontaneous ignition
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.)
Granted
Application number
JP57030360A
Other languages
Japanese (ja)
Other versions
JPH0252817B2 (en
Inventor
Katsuyuki Miyauchi
宮内　克之
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.)
Chino Corp
Original Assignee
Chino Works Ltd
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 Chino Works Ltd filed Critical Chino Works Ltd
Priority to JP57030360A priority Critical patent/JPS58147635A/en
Publication of JPS58147635A publication Critical patent/JPS58147635A/en
Publication of JPH0252817B2 publication Critical patent/JPH0252817B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
    • G01J5/0066—Radiation pyrometry, e.g. infrared or optical thermometry for hot spots detection
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
    • G01J5/48—Thermography; Techniques using wholly visual means

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Investigating Or Analyzing Materials Using Thermal Means (AREA)

Abstract

PURPOSE:To monitor the spontaneous ignition of an open-air storage of coal by providing reciprocating scanning of temperature with a radiation thermometer in the longitudinal direction of the middle height of an open-air coal storage and comparing average temperatures at points in advancing scanning and those in the returning scanning. CONSTITUTION:A radiation thermometer 21 is reciprocated to scan with a predetermined width on one side that is positioned at the middle point 1a of the height of an open-air coal storage 1 over its length to measure temperature at various points. An arithmetic unit 3 calculates the outputs of radiation thermometers 21... 2n and generates alarm signals 41... 4m at measurement points in the longitudinal direction of the middle point 1a of a coal storage 1. With those devices in the scanning of one reciprocation at the middle point 1a of the open-air coal storage average temperature of temperatures at various measurement points in the advancing scanning is calculated by the arithmetic unit 3 and in the returning scanning the temperatures of various measurement points are compared with said average temperature and if the difference of temperature between a predetermined point and the average temperature exceeds a specified value, alarm is sounded with regard to its location.

Description

【発明の詳細な説明】 （１）発明の技術分野 この発明は、野積石炭の自然発火をあらかじめ監視する
装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION (1) Technical Field of the Invention The present invention relates to a device for pre-monitoring spontaneous ignition of piled coal.

伐）従来技術 第１図で示すように、野積石炭１は、断面が台形状で山
脈状Ｋｌｌすれている。例えば底辺の長さが５０溝、高
さが１７惰、長さが５００　ｓ　Ｋも及ぶ太きなもので
ある。BACKGROUND ART As shown in FIG. 1, piled coal 1 has a trapezoidal cross section and a mountain range shape. For example, it is a thick one with a base length of 50 grooves, a height of 17 grooves, and a length of 500 seconds.

そして、自然発火のメカニズムは２発火寸前では内部Ｆ
において、８０〜９０℃１石炭山の中腹１ａの２〜３惰
にわたって２〜３℃表面温度が上昇することが知られて
いる。And the mechanism of spontaneous combustion is that on the verge of ignition, the internal F
It is known that the surface temperature increases by 2 to 3 degrees Celsius from 80 to 90 degrees Celsius over two to three days on the middle side 1a of the coal pile.

この為、従来は、サーモビジ、７等で野積石炭ｌの側方
全体。を平面的に監視していたが、このような方法では
測定精度が２〜３℃程度で、自然発火の予知、監視は不
可能であった。For this reason, conventionally, thermovisi, 7 grade, was used to measure the entire side of the piled coal. However, with this method, the measurement accuracy was only about 2 to 3 degrees Celsius, making it impossible to predict or monitor spontaneous combustion.

（３）発明の目的 仁の発明の目的は９以上の点に鑑み、簡単な構成にて、
自然発火の監視を高信頼に可能とじ九野積石炭の自然発
火監視装置を提供することである。(3) Purpose of the invention In view of the above points, the purpose of the invention is to have a simple structure,
An object of the present invention is to provide a spontaneous ignition monitoring device for Kuno pile coal that enables highly reliable monitoring of spontaneous ignition.

（４）発明の実施例 第２図は、この発明の一実施例を示す構成説明図である
。(4) Embodiment of the Invention FIG. 2 is a configuration explanatory diagram showing an embodiment of the invention.

図において、ｌは野積石炭で、その中腹１ｇの片側の所
定の幅について、長手方向く放射温度計２１を図示しな
い駆動装置によシ往復走査し、各点での温度が測定され
るようになっている。なお、複数台の放射温度計２ｎを
野積石炭１の長手方向の側方に設けるようにしてもよく
、これら放射温度計２１、・・・、２ｎは２図示しない
野積石炭ｌをおおう鉄骨等ＫＩｌｔられている。３は、
放射温度計２！、・・・。In the figure, l is piled coal, and a radiation thermometer 21 is scanned back and forth in the longitudinal direction by a drive device (not shown) over a predetermined width on one side of 1 g of piled coal, so that the temperature at each point is measured. It has become. Incidentally, a plurality of radiation thermometers 2n may be installed on the sides of the piled coal 1 in the longitudinal direction. It is being 3 is
Radiation thermometer 2! ,...

２ｎの出力信号を演算し、野積石炭１の中腹１ａの長手
方向の各測点毎に警報信号４１．・・・、４ｍを発生す
るような演算装置である。2n output signals are calculated, and an alarm signal 41. . . , is an arithmetic device that generates 4m.

次に第３図を参照して動作を説明する。Next, the operation will be explained with reference to FIG.

例えば、１台の放射温度計２１について考えてみると、
まず野積石炭１の中腹１ａの１往復走査において、往走
査で第３図（ａ）で示すような各点の温度の平均値を演
算装置３で演算し１次の復走査でこの平均値と各点での
温度との差を第３図Φ）で示すように比較し、この差が
所定の温度以上となったときに、その測定点について第
３図（Ｃ）で示すように警報信号４１等を発生する。こ
の警報信号４１等により、散水弁等を開とし、野積石炭
ｌの警報点の消火を行うようにする。For example, considering one radiation thermometer 21,
First, in one reciprocating scan of the middle part 1a of the piled coal 1, the average value of the temperature at each point as shown in FIG. The difference in temperature at each point is compared as shown in Figure 3 (Φ), and when this difference exceeds a predetermined temperature, an alarm signal is sent for that measurement point as shown in Figure 3 (C). 41 mag. This alarm signal 41 etc. opens the water sprinkler valve etc. to extinguish the fire at the alarm point of the piled coal l.

他の放射温度針についても同様の動作が行なわれ、演算
装置３は全部で１台または、それ以上でもよい。Similar operations are performed for other radiation temperature needles, and the number of arithmetic units 3 may be one or more in total.

復走査において減算することによシトリフトは除去され
、温度差の測定には影響を与えず、自然発火の監視のた
めの往走査の平均値に対する復走査の温度値との２〜３
℃の差は十分に判別することが常時可能である。By subtracting in the backward scan, the sit lift is removed and does not affect the measurement of temperature differences, and the difference between the temperature value of the backward scan and the average value of the forward scan for spontaneous combustion monitoring is 2-3.
It is always possible to distinguish the difference in degrees Celsius satisfactorily.

（５）発明の要約 野積石炭の長手方向の中腹を放射温度計で往復走査し、
往走査の平均値と復走査の各点での温度を比較すること
により、野積石炭の自然発火を監視するようにした野積
石炭の自然発火監視装置。(5) Summary of the invention A radiation thermometer is used to reciprocally scan the middle of the piled coal in the longitudinal direction.
A spontaneous ignition monitoring device for piled coal that monitors spontaneous ignition of piled coal by comparing the average value of the forward scan and the temperature at each point of the backward scan.

（６）発明の効果 放射温度針の往走査と、復走査での各点の温度差をとっ
て、この値が所定の値以上となるかどうかを演算、監視
しているので、かシに放射温度計にドリフト等の誤差が
あっても完全に相殺され。(6) Effects of the invention The temperature difference between each point during forward and backward scanning of the radiation temperature needle is calculated and monitored to see if this value exceeds a predetermined value. Even if there is an error such as drift in the radiation thermometer, it is completely canceled out.

常に正しい監視が可能となる。また、野積石炭の中腹の
み走査すればよいので、野積石炭全体を面走査するのと
比較して走査がはるかに簡単で済み。Correct monitoring is always possible. In addition, since it is only necessary to scan the middle of the piled coal, scanning is much easier than scanning the entire surface of the piled coal.

総費用は安価なものとなシ、実用的効果が大きい。The total cost is low and the practical effects are great.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は、原理説明図、第２図はこの発明の一実施例を
示す構成説明図、第３図は動作説明用の波形図である。 １・・・野積石炭、　ｌａ・・・中腹、　２１〜２ｎ・
・・放射温度計。 ３・・・演算装置、４１〜４ｍ・・・警報信号特許出願
人　株式会社　千野製作所FIG. 1 is a diagram for explaining the principle, FIG. 2 is a diagram for explaining the configuration of an embodiment of the present invention, and FIG. 3 is a waveform diagram for explaining the operation. 1... Open pile coal, la... Halfway up, 21~2n.
... Radiation thermometer. 3...Arithmetic device, 41~4m...Alarm signal patent applicant Chino Seisakusho Co., Ltd.

Claims (1)

【特許請求の範囲】 １、　　＠積石炭の長手方向の中腹を往復走査する放射
温度計と、この放射温度針の往走査で各点の温度の平均
値を演算するとともに復走査でこの平均値と各点での温
度との差を比較し警報信号を発生する演算装置とを備え
たことを特徴とする野積石炭の自然発火監視装置。 ２　前記演算装置の警報信号によシ野積石炭の警報点の
消火を行うようＫした特許請求の範囲第１項記載の野積
石炭の自然発火監視装置。[Claims] 1. A radiation thermometer that scans back and forth along the middle of the stacked coal in the longitudinal direction, and calculates the average value of the temperature at each point by scanning the radiation temperature needle forward, and calculates this average value by scanning backward. 1. A spontaneous ignition monitoring device for piled coal, comprising: a calculation device that compares the difference between the temperature and the temperature at each point and generates an alarm signal. 2. The spontaneous ignition monitoring device for piled coal as set forth in claim 1, wherein an alarm signal from the arithmetic unit is used to extinguish the fire at a warning point in the piled coal.
JP57030360A 1982-02-26 1982-02-26 Spontaneous ignition monitoring device open-air storage of coal Granted JPS58147635A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP57030360A JPS58147635A (en) 1982-02-26 1982-02-26 Spontaneous ignition monitoring device open-air storage of coal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57030360A JPS58147635A (en) 1982-02-26 1982-02-26 Spontaneous ignition monitoring device open-air storage of coal

Publications (2)

Publication Number Publication Date
JPS58147635A true JPS58147635A (en) 1983-09-02
JPH0252817B2 JPH0252817B2 (en) 1990-11-14

Family

ID=12301689

Family Applications (1)

Application Number Title Priority Date Filing Date
JP57030360A Granted JPS58147635A (en) 1982-02-26 1982-02-26 Spontaneous ignition monitoring device open-air storage of coal

Country Status (1)

Country Link
JP (1) JPS58147635A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4671458A (en) * 1985-02-25 1987-06-09 Kabushiki Kaisha Toshiba Air conditioning apparatus
JPS635251A (en) * 1986-06-23 1988-01-11 ザ・エア・プレヒーター・コンパニー・インコーポレーテッド Overheating-point detector
US5462358A (en) * 1994-01-03 1995-10-31 At&T Ipm Corp. Selectively extracting infrared radiation from bioler interior to determine the temperature of individual boiler tubes

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52115288A (en) * 1976-03-24 1977-09-27 Nippon Steel Corp Surface treating device for iron and sttel materials

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52115288A (en) * 1976-03-24 1977-09-27 Nippon Steel Corp Surface treating device for iron and sttel materials

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4671458A (en) * 1985-02-25 1987-06-09 Kabushiki Kaisha Toshiba Air conditioning apparatus
JPS635251A (en) * 1986-06-23 1988-01-11 ザ・エア・プレヒーター・コンパニー・インコーポレーテッド Overheating-point detector
JPH0743332B2 (en) * 1986-06-23 1995-05-15 ザ・エア・プレヒーター・コンパニー・インコーポレーテッド Overheat point detector
US5462358A (en) * 1994-01-03 1995-10-31 At&T Ipm Corp. Selectively extracting infrared radiation from bioler interior to determine the temperature of individual boiler tubes

Also Published As

Publication number Publication date
JPH0252817B2 (en) 1990-11-14

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