JPH0719931A - Fluidized-bed surface position detecting device - Google Patents
Fluidized-bed surface position detecting deviceInfo
- Publication number
- JPH0719931A JPH0719931A JP16459093A JP16459093A JPH0719931A JP H0719931 A JPH0719931 A JP H0719931A JP 16459093 A JP16459093 A JP 16459093A JP 16459093 A JP16459093 A JP 16459093A JP H0719931 A JPH0719931 A JP H0719931A
- Authority
- JP
- Japan
- Prior art keywords
- temperature
- air
- thermocouple
- fluidized
- inlet
- 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.)
- Withdrawn
Links
- 238000001816 cooling Methods 0.000 claims abstract description 20
- 238000002485 combustion reaction Methods 0.000 claims abstract description 5
- 238000001514 detection method Methods 0.000 claims description 11
- 238000009529 body temperature measurement Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 abstract description 16
- 238000012545 processing Methods 0.000 abstract description 9
- 239000012530 fluid Substances 0.000 description 15
- 239000011253 protective coating Substances 0.000 description 9
- 239000011800 void material Substances 0.000 description 7
- 238000012546 transfer Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 230000020169 heat generation Effects 0.000 description 4
- 230000007423 decrease Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000003245 coal Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Landscapes
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
- Length Measuring Devices With Unspecified Measuring Means (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は流動層を有する炉におけ
る、流動層の表面位置を検知する装置に関するものであ
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for detecting the surface position of a fluidized bed in a furnace having a fluidized bed.
【０００２】[0002]
【従来の技術】図４は従来の流動層表面位置検知装置の
配置図である。図において、１は炉壁、２０は発熱用ヒ
ータ、２１は同ヒータの保護被覆、５は流動層、Ｒは流
動層の表面、Ｔ1 ，Ｔ2 ，Ｔ3 ……は炉壁１に、その高
さ方向に任意間隔で設けられ、前記保護被覆２１内の温
度を測定する熱電対である。上記発熱用ヒータ２０は炉
内に流動層が存在しない時に、熱電対Ｔ1 ，Ｔ2 ，Ｔ3
……が同一温度となるよう加熱するようになっている。2. Description of the Related Art FIG. 4 is a layout view of a conventional fluidized bed surface position detecting device. In the figure, 1 is a furnace wall, 20 is a heater for heat generation, 21 is a protective coating for the heater, 5 is a fluidized bed, R is the surface of the fluidized bed, T 1 , T 2 , T 3 ... The thermocouples are provided at arbitrary intervals in the height direction and measure the temperature inside the protective coating 21. The heater 20 for heat generation has thermocouples T 1 , T 2 , T 3 when there is no fluidized bed in the furnace.
... are heated so that they have the same temperature.
【０００３】従来の流動層表面位置検知の原理は、流動
層部（流動材）と空層部（流動材が無い部分）の熱伝達
率の差を利用するもので、高さ方向に複数個又は連続し
て発熱用ヒータと熱電対を組合せて設置し、発熱用ヒー
タで加熱した時の保護被覆内の各部の温度を熱電対で測
定し、高さ方向の温度分布の変曲部から流動層表面位置
を検知するものである。ヒータが流動層に覆われている
部分においは、流動材によって多くの熱がうばわれて、
温度が低下するので、熱電対によって測定された保護被
覆内の温度は低下する。The conventional principle of detecting the surface position of the fluidized bed utilizes the difference in heat transfer coefficient between the fluidized bed portion (fluid material) and the empty layer portion (portion without fluidized material). Alternatively, the heater and thermocouple are installed in combination continuously, and the temperature of each part in the protective coating when heated by the heater is measured with the thermocouple and flows from the inflection part of the temperature distribution in the height direction. The layer surface position is detected. In the part where the heater is covered with the fluidized bed, a lot of heat is dissipated by the fluidized material,
As the temperature decreases, the temperature within the protective coating measured by the thermocouple decreases.
【０００４】図５は従来の装置による流動層表面位置の
検知原理の説明図であり、流動層表面Ｒが図４に示され
るように、熱電対Ｔ2 とＴ3 との間（図４のＡの位置）
に位置する場合の温度分布図の一例である。図では、変
曲部と流動層表面位置が一致している。したがって、逆
に、温度分布図を作成することによって、流動層表面の
位置を検知することが可能となる。FIG. 5 is an explanatory view of the principle of detecting the fluidized bed surface position by the conventional apparatus. As shown in FIG. 4, the fluidized bed surface R is between the thermocouples T 2 and T 3 (see FIG. 4). Position A)
It is an example of a temperature distribution diagram in the case of being located at. In the figure, the inflection part and the fluidized bed surface position coincide. Therefore, conversely, it becomes possible to detect the position of the fluidized bed surface by creating a temperature distribution map.
【０００５】[0005]
【発明が解決しようとする課題】多くの流動層では層内
で流動材が攪拌されており、流動材が砂、石炭等固体の
場合は層内部に設置する機器の摩耗対策が重要である。
従来の発熱用ヒータの摩耗対策として保護被覆を厚くす
る方法によると、層内温度変化に対する温度検出の応答
速度が遅く成り流動層表面の位置変化が速い場合は実用
に供しえなくなる。In many fluidized beds, the fluid material is agitated in the bed, and when the fluid material is solid such as sand or coal, it is important to take measures against wear of equipment installed inside the bed.
According to the conventional method of increasing the thickness of the protective coating as a measure against wear of the heater for heat generation, the response speed of the temperature detection to the temperature change in the bed becomes slow and it cannot be put to practical use when the position change of the surface of the fluidized bed is fast.
【０００６】図６は流動層表面Ｒを、図４において、熱
電対Ｔ3 の下側の位置Ａと熱電対Ｔ 3 の上側の位置Ｂと
の間を往復移動させた時の、流動層表面Ｒの高さ方向位
置変化と、それに対応する熱電対Ｔ3 の検出温度の変化
の、時間的経過の一例を示したものである。横方向に記
載してあるａ，ｂ，ｃ……は各時点をあらわす記号であ
る。FIG. 6 shows the surface of the fluidized bed R in FIG.
Couple T3Position A and thermocouple T below 3Position B above
Position of the fluidized bed surface R in the height direction when reciprocating between
Position change and corresponding thermocouple T3Change in temperature detected
This is an example of the lapse of time. Write horizontally
The letters a, b, c ... are symbols that represent each point in time.
It
【０００７】図において、区間ａ〜ｂ、区間ｃ〜ｄ、区
間ｅ〜ｆでは層位置は不変であるため、熱電対Ｔ3 の温
度は一定値となっている。区間ｂ〜ｃは層表面をＡから
Ｂへゆるやかに上昇させた場合、区間ｄ〜ｅは層表面を
同範囲でゆるやかに下降させた場合であって、熱電対Ｔ
3 の検出温度は層表面位置の変化に追従している。した
がって流動層表面位置検知に支障はない。しかし、区間
ｆ〜ｇにおけるように層表面位置を急速に増減させた場
合には、検出温度はほとんど変化しない。したがって従
来の装置では層表面の位置が急速に上下に変化する時は
層表面位置の検知ができなかった。In the figure, since the layer positions are unchanged in the sections a to b, the sections c to d, and the sections e to f, the temperature of the thermocouple T 3 is a constant value. Sections b to c are for a case where the surface of the layer is gently raised from A to B, and sections d to e are for a case where the surface of the layer is slowly lowered within the same range.
The detected temperature of 3 follows the change of the layer surface position. Therefore, there is no problem in detecting the fluidized bed surface position. However, when the layer surface position is rapidly increased or decreased as in the sections f to g, the detected temperature hardly changes. Therefore, the conventional device cannot detect the layer surface position when the position of the layer surface rapidly changes up and down.
【０００８】本発明は流動層表面の高さが急速に変化す
る状況においても、層表面位置を正しく検知することの
できる装置を提供しようとするものである。The present invention is intended to provide an apparatus capable of accurately detecting the position of the bed surface even in a situation where the height of the surface of the fluidized bed is rapidly changed.
【０００９】[0009]
【課題を解決するための手段】本発明は上記課題を解決
したものであって、それぞれ、内外二重の円筒で形成さ
れ、外側円筒にはフィンが取り付けられ、内外円筒の間
には螺旋状の溝が設けられ、同溝には内側円筒から冷却
用空気が導入され、さらに外側円筒の先端と内側円筒の
空気入口部にはそれぞれ温度計測用の熱電対が取り付け
られている複数個の層内温度検出用センサを、燃焼炉の
炉壁にその高さ方向に任意間隔で設けたことを特徴とす
る流動層表面位置検知装置に関するものである。SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and each is formed of an inner and outer double cylinder, a fin is attached to the outer cylinder, and a spiral shape is provided between the inner and outer cylinders. A plurality of layers in which cooling air is introduced from the inner cylinder into the groove, and thermocouples for temperature measurement are attached to the tip of the outer cylinder and the air inlet of the inner cylinder, respectively. The present invention relates to a fluidized bed surface position detecting device, wherein internal temperature detecting sensors are provided on a furnace wall of a combustion furnace at arbitrary intervals in a height direction thereof.
【００１０】[0010]
【作用】各センサの円筒状の先端部には層内温度検出用
の熱電対を取付け、円筒外部には流動材による摩耗対策
と層内温度伝達の効率が良い様に表面積を大きくする目
的でフィンが設けてある。本フィンは流動材と円筒表面
との摩擦を防止する目的も兼ねているため円筒部の肉厚
を薄く出来、層内温度に迅速に応答する。又、円筒内部
には円筒を冷却するための空気が螺旋状の溝を通る様に
成っている。円筒先端部には層内温度検出用、円筒空気
入口部には入口空気温度検出用の熱電対が取付けられ、
これらの出力は層外の信号処理装置で監視し、入口空気
温度の変化により、先端部の温度補正をして層内温度の
測定を行う。すなわちセンサ先端部温度検出値と入口空
気温度検出値との差の炉の高さ方向の値が急激に変化す
る範囲に流動層表面が位置するものと判定する。[Function] A thermocouple for detecting the temperature inside the layer is attached to the cylindrical tip of each sensor, and the outside of the cylinder is used for the purpose of increasing the surface area so as to prevent wear due to a fluid material and to increase the temperature transfer inside the layer. There are fins. Since this fin also serves the purpose of preventing friction between the fluid material and the surface of the cylinder, the wall thickness of the cylinder can be reduced, and the fin temperature can be quickly responded to. In addition, air for cooling the cylinder passes through the spiral groove inside the cylinder. A thermocouple for detecting the temperature inside the layer is attached to the tip of the cylinder, and a thermocouple for detecting the inlet air temperature is attached to the cylinder air inlet.
These outputs are monitored by a signal processing device outside the layer, and the temperature inside the layer is measured by correcting the temperature at the tip end according to the change in the inlet air temperature. That is, it is determined that the fluidized bed surface is located in a range in which the value in the furnace height direction of the difference between the sensor tip temperature detection value and the inlet air temperature detection value rapidly changes.
【００１１】[0011]
【実施例】図１は本発明の一実施例に係る流動層表面位
置検知装置の系統図である。図において、１は炉壁、２
は流動材投入口、３は炉底部に設けられているガス入
口、４は同ガス入口の上側に設けられている多穴板、５
は同多穴板の上に形成されている流動層、Ｒは流動層表
面、６は炉の上部の炉壁に設けられている排ガス出口、
７は炉内の前記流動層表面Ｒより上の部分すなわち空層
部、Ｓ1 ，Ｓ2 ，Ｓ3……は炉壁の高さ方向に順次設け
られている熱電対を内蔵した温度センサ、８は同各温度
センサに連る信号処理装置、９は上記各温度センサを連
ねる冷却用空気配管である。各温度センサを順次冷却し
た後の空気は大気中へ放出される。FIG. 1 is a system diagram of a fluidized bed surface position detecting device according to an embodiment of the present invention. In the figure, 1 is a furnace wall, 2
Is a fluid material inlet, 3 is a gas inlet provided at the bottom of the furnace, 4 is a multi-hole plate provided above the gas inlet, 5
Is a fluidized bed formed on the multi-hole plate, R is the surface of the fluidized bed, 6 is an exhaust gas outlet provided on the furnace wall in the upper part of the furnace,
Reference numeral 7 denotes a portion above the fluidized bed surface R in the furnace, that is, a void portion, and S 1 , S 2 , S 3 ... Are temperature sensors incorporating thermocouples sequentially provided in the height direction of the furnace wall, Reference numeral 8 is a signal processing device connected to the temperature sensors, and 9 is a cooling air pipe connecting the temperature sensors. The air after sequentially cooling each temperature sensor is discharged into the atmosphere.
【００１２】上記の燃焼炉において、ガス入口３から供
給されたガスは多穴板４を通過し、流動層５内で流動材
と混合燃焼し、空層部７を経て排ガス出口６から排出さ
れる。流動材投入口２から供給される流動材と、ガス入
口３から供給されるガス量とに応じて、流動層５と空層
部７との境界をなす流動層表面Ｒの上下方向位置が変動
する。In the above combustion furnace, the gas supplied from the gas inlet 3 passes through the multi-hole plate 4, is mixed and burned with the fluid material in the fluidized bed 5, and is discharged from the exhaust gas outlet 6 through the void portion 7. It The vertical position of the fluidized bed surface R that forms the boundary between the fluidized bed 5 and the void portion 7 varies depending on the fluidized material supplied from the fluidized material inlet 2 and the amount of gas supplied from the gas inlet 3. To do.
【００１３】図２は上記実施例における温度センサ（Ｓ
1 ，Ｓ2 ，Ｓ3 ……等）の断面図である。図において、
１は炉壁、１１は閉じた先端部を有する外筒、１２は内
筒、１３は内筒の中心を貫通する空気入口、１４は内筒
と外筒との間に形成されている螺旋状空気通路、１５は
同空気通路に連る空気出口、１６は外筒の外周部に形成
されているフィン、１７は外筒の先端部に設けられてい
る層内温度検出用熱電対、１８は空気入口１３内に設け
られている入口空気温度検出用熱電対、１９はこの温度
センサを炉壁に取付けるための断熱性の取付具である。FIG. 2 shows the temperature sensor (S
1 is a cross-sectional view of S 2, S 3 ......, etc.). In the figure,
1 is a furnace wall, 11 is an outer cylinder having a closed tip portion, 12 is an inner cylinder, 13 is an air inlet penetrating the center of the inner cylinder, and 14 is a spiral shape formed between the inner cylinder and the outer cylinder. An air passage, 15 is an air outlet connected to the air passage, 16 is a fin formed on the outer peripheral portion of the outer cylinder, 17 is a thermocouple for detecting in-layer temperature provided at the tip of the outer cylinder, and 18 is An inlet air temperature detecting thermocouple 19 provided in the air inlet 13 is a heat insulating fitting for mounting the temperature sensor on the furnace wall.
【００１４】空気入口１３は図１の冷却用空気配管９に
連るものである。また空気出口１５は上記と同様な配管
を介して隣りの温度センサの空気入口１３に連るもので
ある。熱電対１７，１８は空気によって冷却される。上
記フィン１６は外筒表面積を大きくして熱伝達の効率を
高め、熱電対が層内温度に迅速に反応するようにしたも
のであり、さらに、流動材による外筒の摩耗を防止する
働きをする。このような摩耗防止対策が施してあるの
で、外筒の肉厚を薄くすることができ、熱電対は、一
層、層内温度に迅速に応答することができる。The air inlet 13 is connected to the cooling air pipe 9 shown in FIG. Further, the air outlet 15 is connected to the air inlet 13 of the adjacent temperature sensor via the same pipe as described above. The thermocouples 17 and 18 are cooled by air. The fins 16 have a large outer cylinder surface area to improve heat transfer efficiency so that the thermocouple quickly reacts to the temperature in the bed, and further has a function of preventing wear of the outer cylinder by the fluid material. To do. Since such wear prevention measures are taken, the wall thickness of the outer cylinder can be reduced, and the thermocouple can more quickly respond to the in-layer temperature.
【００１５】層内温度検出用熱電対１７と入口空気温度
検出用熱電対１８はいずれも図１の信号処理装置８に連
っている。これら熱電対の出力は信号処理装置で監視さ
れ、入口空気温度の変化により先端部で検出する層内温
度の補正を行う。流動材が無い時、補正された層内温度
がすべてのセンサで等しい値となるよう調整しておく。The in-layer temperature detecting thermocouple 17 and the inlet air temperature detecting thermocouple 18 are both connected to the signal processing device 8 shown in FIG. The outputs of these thermocouples are monitored by a signal processing device, and the temperature inside the layer detected at the tip is corrected by the change in the inlet air temperature. When there is no fluid, the corrected in-bed temperature is adjusted to be the same for all sensors.
【００１６】一般に熱は高温側から低温側へ移動する。
従来技術（図４）においては炉内に発熱ヒータ２０があ
り、同ヒータから発せられた熱は、保護被覆２１を経
て、より低温の炉内のガスあるいは流動材の方へ移動し
ていた。物体表面では、攪拌されている流動材の方がガ
スより熱伝達率が高いから、流動層内の方が空層部に比
して、保護被覆からの熱の奪われ方も大であった。この
ため、保護被覆内の検出温度は、流動層内の方が空層部
に比して低くなっていた（図５）。Generally, heat moves from the high temperature side to the low temperature side.
In the prior art (FIG. 4), the heating heater 20 is provided in the furnace, and the heat generated from the heater is transferred to the gas or fluid material in the furnace at a lower temperature through the protective coating 21. On the surface of the object, the agitated fluid has a higher heat transfer coefficient than the gas, so the heat inside the fluidized bed was also taken away from the protective coating more than the void. . For this reason, the temperature detected in the protective coating was lower in the fluidized bed than in the void portion (Fig. 5).
【００１７】一方本実施例には発熱ヒータは無く、温度
センサは冷却されている。したがって炉内のガスあるい
は流動材の熱は、より低温のセンサの方へ移動する。物
体表面では、攪拌されている流動材の方がガスより熱伝
達率は高いから、流動層内の方が、空層部に比してセン
サが受ける熱は大である。このためセンサによる炉内温
度検出値は流動層内の方が空層部に比して高い値とな
る。On the other hand, in this embodiment, there is no heating heater and the temperature sensor is cooled. Therefore, the heat of the gas or fluid in the furnace transfers to the cooler sensor. On the surface of the object, the agitated fluid has a higher heat transfer coefficient than the gas, so that the heat received by the sensor in the fluidized bed is larger than that in the void portion. For this reason, the temperature detected in the furnace by the sensor becomes higher in the fluidized bed than in the empty layer.
【００１８】各温度センサＳ1 ，Ｓ2 ，……の入口空気
温度は図２に示す入口空気温度検出用熱電対１８でそれ
ぞれ計測され、同図の層内温度検出用熱電対１７と共に
図１の信号処理装置８に入力される。流動層の高さが低
く、その表面Ｒの位置がセンサＳ1 より下にある時、す
なわち、全温度検出センサが空層部にあり、全入口空気
温度が同じであると仮定すると、全層内温度検出用熱電
対１７の検出温度は全て同一の値となる。しかし図１に
示す場合の様に、流動層表面ＲがセンサＳ2 ，Ｓ3 の間
にある場合は、Ｓ2 より下部にある温度検出用センサの
熱電対１７は、攪拌された流動材により常時加熱される
ため、Ｓ3 より上部の検出温度に比較して高温の検出値
を示すが、その絶対値は各温度検出用センサの入口空気
温度の差によるバラツキがある。従って信号処理装置１
０では、層内温度検出用熱電対１７と入口空気温度検出
用熱電対１８との温度差をとり、冷却空気温度に無関係
に各温度検出センサの冷却値を調べている。The inlet air temperature of each of the temperature sensors S 1 , S 2 , ... Is measured by the inlet air temperature detecting thermocouple 18 shown in FIG. 2, and is shown together with the in-layer temperature detecting thermocouple 17 shown in FIG. Is input to the signal processing device 8. When the height of the fluidized bed is low and the position of its surface R is below the sensor S 1 , that is, assuming that the total temperature detection sensor is in the void portion and the total inlet air temperature is the same, The temperatures detected by the thermocouples 17 for detecting the internal temperature are all the same value. However, as in the case shown in FIG. 1, when the fluidized bed surface R is between the sensors S 2 and S 3 , the thermocouple 17 of the temperature detecting sensor below S 2 is formed by the agitated fluid material. because it is always heated, it exhibits a detected value of the high temperature as compared from S 3 to the top of the detected temperature, the absolute value there is a variation due to the difference in the inlet air temperature of each temperature detection sensor. Therefore, the signal processing device 1
At 0, the temperature difference between the in-layer temperature detecting thermocouple 17 and the inlet air temperature detecting thermocouple 18 is calculated, and the cooling value of each temperature detecting sensor is examined regardless of the cooling air temperature.
【００１９】図３は流動層表面Ｒの位置が丁度図１に示
すようにセンサＳ2 とＳ3 との間にある時、本発明によ
り、各センサの温度検出用熱電対１７および１８の検出
温度の差、すなわち冷却値を求め、図示したものであ
る。図からセンサＳ2 とＳ3 の間に変曲部があり、層表
面Ｒの存在範囲と一致している。図１の信号処理装置８
では、この変曲部を調査するため下側の温度検出用セン
サの冷却値（温度差）と、隣接するその上側のセンサの
冷却値（温度差）との差を最下部のセンサから順次求
め、その差が規定値以上となれば、そこに変曲部、すな
わち流動層表面が存在するものと判断している。In FIG. 3, when the position of the fluidized bed surface R is just between the sensors S 2 and S 3 as shown in FIG. 1, according to the present invention, the temperature detecting thermocouples 17 and 18 of each sensor are detected. The difference between the temperatures, that is, the cooling value is obtained and illustrated. As shown in the figure, there is an inflection portion between the sensors S 2 and S 3 , which coincides with the existing range of the layer surface R. Signal processing device 8 of FIG.
Then, in order to investigate this inflection part, the difference between the cooling value (temperature difference) of the lower temperature detection sensor and the cooling value (temperature difference) of the adjacent upper sensor is sequentially calculated from the bottom sensor. If the difference exceeds a specified value, it is judged that there is an inflection part, that is, a fluidized bed surface.
【００２０】本実施例によれば、冷却空気温度に無関係
に冷却値（温度差）による変曲部を調べているため、冷
却用空気の連続配管が可能と成り、空気温度変化の影響
が無視出来る等の利点がある。本実施例により、従来の
装置による流動層表面位置検知の欠点である応答速度の
遅れを改善出来、高温の層内でも冷却を兼ねた冷空気を
測定用に使用するので特別な冷却対策が不要と成る。According to this embodiment, since the inflection portion due to the cooling value (temperature difference) is examined regardless of the cooling air temperature, continuous piping of cooling air is possible, and the influence of the air temperature change is neglected. There are advantages such as being able to do it. According to this embodiment, the delay of the response speed, which is a drawback of the conventional apparatus for detecting the surface position of the fluidized bed, can be improved, and no special cooling measures are required because cold air that also serves as cooling is used for measurement even in a high temperature bed. Becomes
【００２１】[0021]
【発明の効果】本発明の流動層表面位置検知装置におい
ては、それぞれ、内外二重の円筒で形成され、外側円筒
にはフィンが取り付けられ、内外円筒の間には螺旋状の
溝が設けられ、同溝には内側円筒から冷却用空気が導入
され、さらに外側円筒の先端と内側円筒の空気入口部に
はそれぞれ温度計測用の熱電対が取り付けられている複
数個の層内温度検出用センサを、燃焼炉の炉壁にその高
さ方向に任意間隔で設けてあるので、流動層表面高さが
急速に変化する状況においても、同層の表面位置を正し
く検知することができる。In the fluidized bed surface position detecting device of the present invention, each is formed of an inner and outer double cylinder, a fin is attached to the outer cylinder, and a spiral groove is provided between the inner and outer cylinders. Cooling air is introduced from the inner cylinder into the groove, and thermocouples for temperature measurement are attached to the tip of the outer cylinder and the air inlet of the inner cylinder. Are provided on the furnace wall of the combustion furnace at arbitrary intervals in the height direction thereof, the surface position of the same bed can be accurately detected even in a situation where the height of the fluidized bed surface changes rapidly.
【図１】本発明の一実施例に係る流動層表面位置検知装
置の系統図。FIG. 1 is a system diagram of a fluidized bed surface position detection device according to an embodiment of the present invention.
【図２】上記実施例における温度センサの断面図。FIG. 2 is a sectional view of the temperature sensor in the above embodiment.
【図３】上記実施例における流動層表面位置の検知原理
説明図。FIG. 3 is an explanatory view of a principle of detecting a fluidized bed surface position in the above embodiment.
【図４】従来の流動層表面位置検知装置の配置図。FIG. 4 is a layout view of a conventional fluidized bed surface position detection device.
【図５】従来の装置による流動層表面位置の検知原理説
明図。FIG. 5 is an explanatory view of a principle of detecting a fluidized bed surface position by a conventional device.
【図６】従来の装置による流動層表面の移動と検出温度
との関係図。FIG. 6 is a diagram showing the relationship between the movement of the fluidized bed surface and the detected temperature by a conventional device.
Ｒ 流動層表面 Ｓ1 ，Ｓ2 ，Ｓ3 …… 温度センサ Ｔ1 ，Ｔ2 ，Ｔ3 …… 熱電対 １ 炉壁 ２ 流動材投入口 ３ ガス入口 ４ 多穴板 ５ 流動層 ６ 排ガス出口 ７ 空層部 ８ 信号処理装置 ９ 冷却用空気配管 １１ 外筒 １２ 内筒 １３ 空気入口 １４ 螺旋状空気通路 １５ 空気出口 １６ フィン １７ 層内温度検出用熱電対 １８ 入口温度検出用熱電対 ２０ 発熱用ヒータ ２１ 保護被覆R fluidized bed surface S 1 , S 2 , S 3 ...... Temperature sensor T 1 , T 2 , T 3 ...... thermocouple 1 furnace wall 2 fluid material inlet 3 gas inlet 4 multi-hole plate 5 fluidized bed 6 exhaust gas outlet 7 Sky layer section 8 Signal processing device 9 Cooling air piping 11 Outer cylinder 12 Inner cylinder 13 Air inlet 14 Spiral air passage 15 Air outlet 16 Fin 17 Thermocouple for temperature detection in layer 18 Thermocouple for inlet temperature 20 Heater for heat generation 21 Protective coating
Claims (1)
外側円筒にはフィンが取り付けられ、内外円筒の間には
螺旋状の溝が設けられ、同溝には内側円筒から冷却用空
気が導入され、さらに外側円筒の先端と内側円筒の空気
入口部にはそれぞれ温度計測用の熱電対が取り付けられ
ている複数個の層内温度検出用センサを、燃焼炉の炉壁
にその高さ方向に任意間隔で設けたことを特徴とする流
動層表面位置検知装置。1. Each of the inner and outer double cylinders is formed,
Fins are attached to the outer cylinder, a spiral groove is provided between the inner and outer cylinders, cooling air is introduced from the inner cylinder to the groove, and further, the tip of the outer cylinder and the air inlet of the inner cylinder are provided. Is a fluidized bed surface position detection, characterized in that a plurality of in-bed temperature detection sensors, each equipped with a thermocouple for temperature measurement, are installed on the furnace wall of the combustion furnace at arbitrary intervals in the height direction. apparatus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16459093A JPH0719931A (en) | 1993-07-02 | 1993-07-02 | Fluidized-bed surface position detecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16459093A JPH0719931A (en) | 1993-07-02 | 1993-07-02 | Fluidized-bed surface position detecting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0719931A true JPH0719931A (en) | 1995-01-20 |
Family
ID=15796076
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16459093A Withdrawn JPH0719931A (en) | 1993-07-02 | 1993-07-02 | Fluidized-bed surface position detecting device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0719931A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR19980043361A (en) * | 1996-12-03 | 1998-09-05 | 김종진 | Outgoing control method by measuring melt height of blast furnace furnace |
| JP2002168876A (en) * | 2000-12-05 | 2002-06-14 | Tokyo Gas Co Ltd | Flow sensor |
| CN102778267A (en) * | 2012-08-01 | 2012-11-14 | 山西太钢不锈钢股份有限公司 | Method for detecting level of materials in high-temperature storage bin |
| US20130129570A1 (en) * | 2011-04-20 | 2013-05-23 | Siliconvalue Llc. | Polycrystal silicon manufacturing apparatus |
| JP2019163197A (en) * | 2018-03-20 | 2019-09-26 | 国立研究開発法人日本原子力研究開発機構 | Sulfuric acid decomposition reactor having liquid level measurement function |
| CN112781681A (en) * | 2021-01-29 | 2021-05-11 | 郑州恒博环境科技股份有限公司 | Oil-containing diatomite treatment container and material level measurement method |
-
1993
- 1993-07-02 JP JP16459093A patent/JPH0719931A/en not_active Withdrawn
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR19980043361A (en) * | 1996-12-03 | 1998-09-05 | 김종진 | Outgoing control method by measuring melt height of blast furnace furnace |
| JP2002168876A (en) * | 2000-12-05 | 2002-06-14 | Tokyo Gas Co Ltd | Flow sensor |
| US20130129570A1 (en) * | 2011-04-20 | 2013-05-23 | Siliconvalue Llc. | Polycrystal silicon manufacturing apparatus |
| CN102778267A (en) * | 2012-08-01 | 2012-11-14 | 山西太钢不锈钢股份有限公司 | Method for detecting level of materials in high-temperature storage bin |
| JP2019163197A (en) * | 2018-03-20 | 2019-09-26 | 国立研究開発法人日本原子力研究開発機構 | Sulfuric acid decomposition reactor having liquid level measurement function |
| CN112781681A (en) * | 2021-01-29 | 2021-05-11 | 郑州恒博环境科技股份有限公司 | Oil-containing diatomite treatment container and material level measurement method |
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