JPS5835325A - Air ratio measuring device for burner - Google Patents

Air ratio measuring device for burner

Info

Publication number
JPS5835325A
JPS5835325A JP56132677A JP13267781A JPS5835325A JP S5835325 A JPS5835325 A JP S5835325A JP 56132677 A JP56132677 A JP 56132677A JP 13267781 A JP13267781 A JP 13267781A JP S5835325 A JPS5835325 A JP S5835325A
Authority
JP
Japan
Prior art keywords
air ratio
burner
air
pressure difference
measuring device
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
Application number
JP56132677A
Other languages
Japanese (ja)
Inventor
Shin Taniguchi
谷口　紳
Ichiro Hiraiwa
一郎 平岩
Tadao Fujita
藤田　忠男
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.)
Ebara Corp
Original Assignee
Ebara Corp
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 Ebara Corp filed Critical Ebara Corp
Priority to JP56132677A priority Critical patent/JPS5835325A/en
Publication of JPS5835325A publication Critical patent/JPS5835325A/en
Pending legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N1/00—Regulating fuel supply
    • F23N1/02—Regulating fuel supply conjointly with air supply
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2225/00—Measuring
    • F23N2225/02—Measuring filling height in burners
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2233/00—Ventilators
    • F23N2233/06—Ventilators at the air intake
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2235/00—Valves, nozzles or pumps
    • F23N2235/02—Air or combustion gas valves or dampers
    • F23N2235/06—Air or combustion gas valves or dampers at the air intake

Abstract

PURPOSE:To obtain measurement of air ratio with a very simple device at low cost by a method wherein a pressure difference between the frontside and backside of a rectifier plate of the burner is detected and the air ratio of the burner is obtained based on the detected pressure difference. CONSTITUTION:In the burner, an air passage 4 is defined around a nozzle 1 and the rectifier plate 3 is provided at the lower end of the air passage 4. A control mechanism 8 with a differential oscillator and the like is provided for detecting the pressure difference between the frontside and backside of the rectifier plate 3. The control mechanism 8 provides an output to adjust the opening degree of a damper 7 which is arranged within a duct and connected to an air blower 6, so that the air ratio is controlled. With this construction, the air ratio of the burner can be obtained by a very simple and unexpensive device and the air ratio can be maintained within a predetermined range.

Description

【発明の詳細な説明】 本発明はボイラなどに用いる／＜−すの空気比を測定す
る装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device for measuring the air ratio of /<-s for use in boilers and the like.

空気比とは、 なるＲにて示され、燃料に対する空気量の割合の目安と
なるものである。例えばボイラにおけるノく−すの場合
、空気比が大になるとボイラから出てゆく排ガスの損失
が大きくな９、ボイラ効率が下がる。又、空気比が成る
値以下に小さくなるとすすが大量に発生するようζ二な
夛、このすすが伝熱面に付着してボイラ効率を下げる。The air ratio is expressed as R, and serves as a guideline for the ratio of air amount to fuel. For example, in the case of exhaust gas in a boiler, as the air ratio increases, the loss of exhaust gas leaving the boiler increases9, and the boiler efficiency decreases. Moreover, when the air ratio is reduced below a certain value, a large amount of soot is generated, and this soot adheres to the heat transfer surface and lowers the boiler efficiency.

従ってバーナの燃焼には適正な空気比を維持することが
必要となる。Therefore, it is necessary to maintain a proper air ratio for combustion in the burner.

空気比を制御する方法として、従来は排ガス中の０２濃
度を検出し、設定値と比較して制御する方法が用いられ
ている。しかしα濃度検出器は価格が非常に高いため中
、小型ボイラなどには使われていない。また、他の方法
として排ガス中のすすの量を排煙濃度針を用いて検出し
、空気比を適正値に制御する方法が用いられているが、
空気比が大き過ぎることは検出できないため排ガス損失
の増大は防げず、また価格もかなシ高いため、中。Conventionally, the air ratio has been controlled by detecting the 02 concentration in the exhaust gas and comparing it with a set value. However, alpha concentration detectors are extremely expensive and are not used in small and medium-sized boilers. Another method used is to detect the amount of soot in the exhaust gas using an exhaust gas concentration needle and control the air ratio to an appropriate value.
Because it is not possible to detect an excessively large air ratio, an increase in exhaust gas loss cannot be prevented, and the price is quite high, so it is medium.

小型ボイラにはあまり用いられない。It is not often used in small boilers.

本発明は、整流板の前後の差圧を測定することにより空
気比を求めることにより、従来のものの１配の欠点を除
き、極めて簡単な、安価な装置により空気比を容易に測
定することができるバーナの空気比測定装置を提供する
ことを目的とするものである。The present invention eliminates one drawback of the conventional method by determining the air ratio by measuring the differential pressure before and after the current plate, and makes it possible to easily measure the air ratio with an extremely simple and inexpensive device. The object of the present invention is to provide a burner air ratio measuring device that is capable of measuring the air ratio of a burner.

発明者らは空気比のＩＩＩ定に関し多くの実験な重ね研
究した結果、空気流の旋回やうすにより生ずるバーナの
整流板の前後の差圧は、第１図書二示す如く空気比と関
係があることを確かめ、その際に得た知見に基づいて本
発明をなすに至ったものである。As a result of many experiments and repeated studies regarding the determination of the air ratio, the inventors found that the differential pressure across the burner rectifying plate, which is caused by the swirling and thickening of the air flow, is related to the air ratio as shown in Book 1, Book 2. We have confirmed that this is the case, and based on the knowledge obtained at that time, we have come to form the present invention.

本発明を実施例につき図面を用いて説明すれば、第２図
のバーナにおいてｌはノズル、２はノズルチップ、３は
整流板、４は空気通路、５は電極棒、６は燃焼用空気の
ブロワ、７はダンパである。８は整流板３の直前及び直
後（又はバーナ火口の外）の圧力゛の差圧を検出し、ダ
ンパ７の開度を調節して空気比を制御する制御機構であ
る。To explain the present invention with reference to the drawings, in the burner shown in FIG. 2, 1 is a nozzle, 2 is a nozzle tip, 3 is a rectifier plate, 4 is an air passage, 5 is an electrode rod, and 6 is a combustion air stream. Blower 7 is a damper. Reference numeral 8 denotes a control mechanism that detects the differential pressure between the pressure immediately before and after the rectifying plate 3 (or outside the burner nozzle), and adjusts the opening degree of the damper 7 to control the air ratio.

制御機構８において、検出された差圧に基づき第１図に
示す関係を用いて空気比を求めて表示するようにしても
よい。The control mechanism 8 may calculate and display the air ratio using the relationship shown in FIG. 1 based on the detected differential pressure.

検出機構としては圧力を導く管と、差圧発振器があれば
よく、構造は極めて簡単で、安価である。The detection mechanism only requires a pressure guide tube and a differential pressure oscillator, and the structure is extremely simple and inexpensive.

差圧発振器の代りに空気圧スイッチを用いれば一定風量
の検出及び確認ができる。If a pneumatic switch is used instead of a differential pressure oscillator, a constant air volume can be detected and confirmed.

本発明により、極めて簡単な安価な構造にて、信頼性の
高いバーナの空気比測定装置を提供することができ、実
用上極めて大なる効果を奏することができる。According to the present invention, it is possible to provide a highly reliable burner air ratio measuring device with an extremely simple and inexpensive structure, and it is possible to achieve extremely great practical effects.

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

図面は本発明の実施例に関するもので、第１図は整流板
前後の差圧と空気比との関係を示すグラフ、第２図はフ
ロー図である。 ｌ・・・ノズル、２・・・ノズルチップ、３・整流板、
４・・・空気通路、５・・・電極棒、６・・・ブロワ、
７・・・ダンパ、８・・・制御機構。 特許出願人　株式会社荏原製作所 代理人弁理士　端　　山　　五　　− 代理人弁理士　千　　１）　　　　稔The drawings relate to embodiments of the present invention; FIG. 1 is a graph showing the relationship between the differential pressure before and after the rectifier plate and the air ratio, and FIG. 2 is a flow diagram. l... Nozzle, 2... Nozzle chip, 3. Rectifier plate,
4...Air passage, 5...Electrode rod, 6...Blower,
7... Damper, 8... Control mechanism. Patent Applicant Ebara Corporation Representative Patent Attorney Go Hatayama - Representative Patent Attorney Minoru Sen 1)

Claims (1)

【特許請求の範囲】[Claims] １、　バーナの整流板の前後の差圧を検出し、咳差圧の
値に基づいてバーナの空気比を求めることを特徴とする
バーナの空気比測定装置。1. A burner air ratio measuring device, which detects the pressure difference before and after the rectifying plate of the burner, and determines the burner air ratio based on the value of the cough pressure difference.
JP56132677A 1981-08-26 1981-08-26 Air ratio measuring device for burner Pending JPS5835325A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56132677A JPS5835325A (en) 1981-08-26 1981-08-26 Air ratio measuring device for burner

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56132677A JPS5835325A (en) 1981-08-26 1981-08-26 Air ratio measuring device for burner

Publications (1)

Publication Number Publication Date
JPS5835325A true JPS5835325A (en) 1983-03-02

Family

ID=15086919

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56132677A Pending JPS5835325A (en) 1981-08-26 1981-08-26 Air ratio measuring device for burner

Country Status (1)

Country Link
JP (1) JPS5835325A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012098848A1 (en) * 2011-01-21 2012-07-26 バブコック日立株式会社 Solid fuel burner and combustion device using same

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5018618A (en) * 1973-06-18 1975-02-27
JPS528536A (en) * 1975-07-09 1977-01-22 Hitachi Ltd Forced draft burner

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5018618A (en) * 1973-06-18 1975-02-27
JPS528536A (en) * 1975-07-09 1977-01-22 Hitachi Ltd Forced draft burner

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012098848A1 (en) * 2011-01-21 2012-07-26 バブコック日立株式会社 Solid fuel burner and combustion device using same
JP5490924B2 (en) * 2011-01-21 2014-05-14 バブコック日立株式会社 Solid fuel burner and combustion apparatus using the burner

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