JPS5934605B2 - constant flow transport device - Google Patents
constant flow transport deviceInfo
- Publication number
- JPS5934605B2 JPS5934605B2 JP13404579A JP13404579A JPS5934605B2 JP S5934605 B2 JPS5934605 B2 JP S5934605B2 JP 13404579 A JP13404579 A JP 13404579A JP 13404579 A JP13404579 A JP 13404579A JP S5934605 B2 JPS5934605 B2 JP S5934605B2
- Authority
- JP
- Japan
- Prior art keywords
- pressure
- tank
- pressurized
- line
- constant
- 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.)
- Expired
Links
Landscapes
- Air Transport Of Granular Materials (AREA)
Description
【発明の詳細な説明】
この発明は粉粒体等を定量輸送するための定量輸送装置
に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a quantitative transport device for quantitatively transporting powder or granular materials.
流体を容器から定流量で輸送する方法としてタンクの重
量減量を時間微分しこの値を一定にするように排出量を
調節する計量制御方法が採用されているが、この方法に
よると輸送ラインの圧力が変動するような外乱が生ずる
と安定性のある排出制御が行なえない欠点がある。As a method of transporting fluid from a container at a constant flow rate, a metering control method is used in which the weight loss of the tank is differentiated with time and the discharge amount is adjusted to keep this value constant. According to this method, the pressure in the transport line is There is a drawback that stable emission control cannot be performed when disturbances that cause fluctuations occur.
この種の輸送装置においては一般に加圧タンクからの排
出量は輸送管圧力が一定である場合タンク圧力に比例し
て変化する。In this type of transport device, the amount discharged from the pressurized tank generally varies in proportion to the tank pressure when the transport pipe pressure is constant.
従って前記計量制御方法によってタンク加圧圧力を一定
として排出量を所定の定流量に維持しようとしても輸送
管圧力が変動すると排出量の制御が追随せずに不安定に
なるのである。Therefore, even if an attempt is made to maintain the discharge amount at a predetermined constant flow rate by keeping the tank pressurization pressure constant using the metering control method, if the pressure of the transport pipe fluctuates, the control of the discharge amount will not follow suit and become unstable.
本発明は上記の欠点を解決するための装置を提供せんと
するものであって、後述するように粉粒体排出機構成は
送出方法に拘らず適用できる上顎圧気体の供給方法が異
なる場合にも適用できるものである。The present invention aims to provide a device for solving the above-mentioned drawbacks, and as will be described later, the configuration of the powder discharger is applicable regardless of the delivery method when the supply method of maxillary pressure gas is different. It is also applicable.
本発明装置を構成する加圧タンク１は、加圧気体供給弁
１１と、排出輸送管４に接続されるブスターライン１２
及びロータリー弁、排出ノズルその他適宜の排出機構を
備え、その排出量はタンク重量減量微分値を入力とする
重量調節計８の出力によって制御されるようになってい
る。A pressurized tank 1 constituting the device of the present invention includes a pressurized gas supply valve 11 and a booster line 12 connected to a discharge transport pipe 4.
It is equipped with a rotary valve, a discharge nozzle, and other appropriate discharge mechanisms, and the discharge amount thereof is controlled by the output of a weight controller 8 which receives the tank weight reduction differential value as input.
本発明において、輸送管への粉粒体排出量は、第１図の
ロータリー弁では主としてその回転速度で決定され、第
２図のノズル排出の場合は加圧タンク圧力が一定であれ
ばブスター流量に比例して変化し、また第３図の場合は
排出弁３４の開度が一定であればパルス間隔即ち弁３３
の開閉時間間隔で調節できる。In the present invention, the amount of powder discharged into the transport pipe is mainly determined by the rotation speed of the rotary valve shown in Fig. 1, and in the case of the nozzle discharge shown in Fig. 2, the booster flow rate is determined if the pressurized tank pressure is constant. In the case of FIG. 3, if the opening degree of the discharge valve 34 is constant, the pulse interval, that is, the valve 33
The opening/closing time interval can be adjusted.
而して加圧タンクの入口、即ち加圧気体供給管又はタン
ク内の気体供給部近傍と、前記加圧タンクの出口、即ち
ブスターライン又はその近傍の輸送管との間に差圧検出
器１４が介装されその調節出力によって加圧気体供給弁
が制御される。A differential pressure detector 14 is installed between the inlet of the pressurized tank, that is, the pressurized gas supply pipe or the vicinity of the gas supply section in the tank, and the outlet of the pressurized tank, that is, the booster line or the transport pipe in its vicinity. is interposed, and the pressurized gas supply valve is controlled by its regulating output.
本発明は以上のように構成されているから粉体輸送中加
圧タンクの出入口差圧は一定に維持されこれによって高
炉羽口などの供給端圧力又は輸送管内圧力が変動しても
それに応じて供給圧力も変化するから排出機構の粉体排
出能力は一定に維持され定量輸送が確保されるのである
。Since the present invention is constructed as described above, the differential pressure at the entrance and exit of the pressurized tank is maintained constant during powder transportation, so that even if the pressure at the supply end of the blast furnace tuyere or the like or the pressure inside the transportation pipe fluctuates, the pressure can be adjusted accordingly. Since the supply pressure also changes, the powder discharging capacity of the discharging mechanism is maintained constant and constant quantity transportation is ensured.
以下に本発明の実施例装置を図ζこついて説明する。An embodiment of the present invention will be explained below with reference to FIG.
第１図において、１は加圧タンクであって粉粒体は投入
弁２から補給される。In FIG. 1, reference numeral 1 denotes a pressurized tank, into which powder and granules are replenished through an input valve 2.
３はタンク下部に設けられているロータリー弁であって
排出装置を構成している。3 is a rotary valve provided at the bottom of the tank and constitutes a discharge device.
４は輸送管５はエアレータ６はロードセルその他の重量
検出器７は重量検出器出力を時間微分する微分器、８は
微分器出力と設定値とを比較して排出装置３を操作する
重量流量調節計である。4 is a transport pipe 5 is an aerator 6 is a load cell or other weight detector 7 is a differentiator that differentiates the output of the weight detector with time; 8 is a weight flow rate adjustment that compares the output of the differentiator with a set value and operates the discharge device 3 It is a total.
１０は加圧気体供給源（図示せず）に接続されタンク１
に流動用加圧気体を供給する加圧ラインであって制御弁
１１を備えている。10 is connected to a pressurized gas supply source (not shown) and tank 1
This is a pressurized line for supplying pressurized gas for flow to the air conditioner, and is equipped with a control valve 11.
１２は同様の加圧気体供給源と輸送管４との間に接続さ
れたブスターラインでありブスター弁１３を有している
。12 is a booster line connected between a similar pressurized gas supply source and the transport pipe 4, and has a booster valve 13.
１４はライン１０．１２間に介装された差圧検出器１５
は差圧調節計であり、検出器出力と設定値とを比較して
加圧制御弁１１を操作しライン１０．１２間の差圧が一
定になるようにするためのものである。14 is a differential pressure detector 15 interposed between lines 10 and 12.
1 is a differential pressure regulator, which compares the output of the detector with a set value and operates the pressure control valve 11 so that the differential pressure between the lines 10 and 12 becomes constant.
上記実施例装置は、排出装置を加圧タンクの重量時間微
分値を一定にするように制御すると共に排出装置出入口
差圧を一定にするように制御しているから、たとえ輸送
ラインの圧力が変動したり高圧力の場合に於ても排出量
の定量安定性が得られ製鋼インジェクション、微粉炭燃
焼設備、吹付装置等に利用して好適である。In the device of the above embodiment, the discharge device is controlled to keep the weight-time differential value of the pressurized tank constant, and the differential pressure at the outlet and outlet of the discharge device is controlled to be constant, so even if the pressure in the transportation line fluctuates, It is suitable for use in steel injection, pulverized coal combustion equipment, blowing equipment, etc., as it provides quantitative stability in the amount of discharge even under high pressure.
次に、第２図の装置は、排出機構としてタンク内のエア
レータ５上に開口する排出ノズル２１を設けたものであ
って加圧ライン圧力Ｐ、がエアレータ室の圧力とはゾ等
しいことから差圧検出器１４を前記エアレータ室とブス
ターラインの近傍の輸送管との間に介装させたものであ
る。Next, the device shown in Fig. 2 is equipped with a discharge nozzle 21 that opens above the aerator 5 in the tank as a discharge mechanism, and since the pressurized line pressure P is equal to the pressure in the aerator chamber, there is a difference. A pressure detector 14 is interposed between the aerator chamber and the transport pipe near the booster line.
一般に粉粒体の物性が一様であれば、加圧弁１１を第１
図又は第３図の如く制御してもよいが広い物性範囲のも
のにも適用する場合には、本例の如く重量減量による設
定値（差圧調節計の）修正即ちカスケード制御が有効で
ある。Generally, if the physical properties of the powder or granular material are uniform, the pressure valve 11 is
Control as shown in Figure 3 or Figure 3 may be used, but when applying to a wide range of physical properties, it is effective to modify the set value (of the differential pressure controller) by reducing the weight as in this example, that is, cascade control. .
本例においては、差圧調節計１５の制御特性を向上させ
るため重量調節計８の出力を設定値として供給している
。In this example, the output of the weight controller 8 is supplied as a set value in order to improve the control characteristics of the differential pressure controller 15.
また排出弁２２は全閉又は全開に操作されるものである
。Further, the discharge valve 22 is operated to be fully closed or fully opened.
この型式の加圧タンクにおいては加圧弁１１からの気体
供給量とブスター気体流量との比率によって粉体排出量
が変化するからブスター流量を一定流量に調節した状態
で加圧弁を差圧調節出力によって制御することにより定
流量排出が可能になる。In this type of pressurized tank, the amount of powder discharged varies depending on the ratio between the gas supply amount from the pressurizing valve 11 and the booster gas flow rate, so with the booster flow rate adjusted to a constant flow rate, the pressurizing valve is controlled by the differential pressure adjustment output. Control enables constant flow discharge.
本発明において差圧検出器１４から得られる出力を、単
なる差圧出力ではなく、加圧ライン圧力Ｐ１とブスター
ライン圧力Ｐ２との差と、加圧ライン圧力の時間微分値
（ｄＰ１／ｄｉ）との和即ちＰ
Ｐ、＋Ｋ −−”−Ｐ２（但しＫは比例常数）を差圧ｉ
とすることにより加圧ラインの変動分を補正した真の排
出装置出入口差圧が得られ一層効果的である。In the present invention, the output obtained from the differential pressure detector 14 is not just a differential pressure output, but also the difference between the pressurizing line pressure P1 and the booster line pressure P2, and the time differential value (dP1/di) of the pressurizing line pressure. By setting the differential pressure i to the sum of P P,+K--"-P2 (where K is a proportional constant), the true differential pressure at the outlet and outlet of the ejector can be obtained by correcting the variation in the pressure line, which is even more effective. be.
第３図は、上記本発明連続輸送装置をパルス輸送に応用
した場合の例であって排出弁３４とピストン弁又は電磁
弁３３をもって排出機構としたものである。FIG. 3 shows an example in which the continuous transport device of the present invention is applied to pulse transport, in which a discharge valve 34 and a piston valve or solenoid valve 33 are used as a discharge mechanism.
３１は、重量調節計８のアナログ出力をパルス列に変換
するパルス発生器、３２はパルス排出の際のノイズを除
去するための差圧フィルターであってブスターラインの
弁３３による断続ガス供給による脈動パルスの影響をな
くすためのものである。31 is a pulse generator that converts the analog output of the weight controller 8 into a pulse train, and 32 is a differential pressure filter for removing noise during pulse discharge, which generates pulsating pulses due to intermittent gas supply by the booster line valve 33. This is to eliminate the influence of
このように本発明はパルス輸送ζこおける定量輸送にも
利用できる。In this way, the present invention can also be used for quantitative transport using pulse transport.
更に本発明において被輸送物は粉粒体に限らず、液体空
気圧圧送タンクを用いて液体の定量輸送を行なう場合に
も有効である。Further, in the present invention, the object to be transported is not limited to powder or granular materials, and the present invention is also effective when transporting a fixed amount of liquid using a liquid pneumatic pumping tank.
第１図乃至第３図は本発明実施例装置の構成図である。
８は重量流量調節計、１４は差圧検出器、１５は差圧調
節計。1 to 3 are configuration diagrams of an apparatus according to an embodiment of the present invention. 8 is a weight flow rate controller, 14 is a differential pressure detector, and 15 is a differential pressure regulator.
Claims (1)
ラインに接続する輸送管に粉粒体を排出する加圧タンク
において、該加圧タンクの重量減少を １検出してその
時間微分値が一定になるように粉粒体排出量を調節する
と共に当該加圧タンクの加圧ラインとブスターラインと
の間に差圧検出器を介装し、該検出器出力に基いて前記
加圧タンクの加圧気体供給弁を操作し、加圧気体圧力を
前記ブスターラインの圧力に対し所定差圧に制御するよ
うにしたことを特徴とする粉粒体の定流量輸送装置。1. In a pressurized tank that is supplied with pressurized gas by a pressurized line and discharges granular material into a transport pipe connected to a booster line, a weight decrease in the pressurized tank is detected and its time differential value is constant. At the same time, a differential pressure detector is interposed between the pressure line and the booster line of the pressure tank, and the pressure of the pressure tank is adjusted based on the output of the detector. 1. A constant flow rate transport device for powder and granular material, characterized in that the pressure of the pressurized gas is controlled to a predetermined differential pressure with respect to the pressure of the booster line by operating a pressurized gas supply valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13404579A JPS5934605B2 (en) | 1979-10-17 | 1979-10-17 | constant flow transport device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13404579A JPS5934605B2 (en) | 1979-10-17 | 1979-10-17 | constant flow transport device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5661227A JPS5661227A (en) | 1981-05-26 |
| JPS5934605B2 true JPS5934605B2 (en) | 1984-08-23 |
Family
ID=15119069
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13404579A Expired JPS5934605B2 (en) | 1979-10-17 | 1979-10-17 | constant flow transport device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5934605B2 (en) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS586827A (en) * | 1981-07-01 | 1983-01-14 | Denka Consult & Eng Co Ltd | Constant flow control unit for high pressure powder/gas pipe transport system |
| JPS5852116A (en) * | 1981-09-18 | 1983-03-28 | Kobe Steel Ltd | Method and equipment for conveying powdery or granular material with air |
| JPS5882925A (en) * | 1981-11-06 | 1983-05-18 | Sumitomo Metal Ind Ltd | Method of controlling distribution of flow of particulate material |
| JPS58100021A (en) * | 1981-12-10 | 1983-06-14 | Denka Consult & Eng Co Ltd | Method of conveying powdery or granular material by air without being affected by arrival pressure |
| JPS58104833A (en) * | 1981-12-12 | 1983-06-22 | Kawasaki Steel Corp | Continuously supplying method and device for transporting granule from one distributive transportation tank to plural supply ends by controlling mass flow to optional preset value |
| JPS597622A (en) * | 1982-07-07 | 1984-01-14 | Hitachi Ltd | Pulverized coal carrying device |
| JPS59124624A (en) * | 1982-12-27 | 1984-07-18 | Kawasaki Steel Corp | Method for distribution and transport of pulverized/ granular material |
| JPS59213434A (en) * | 1983-05-18 | 1984-12-03 | Sumitomo Metal Ind Ltd | Controlling method of fixed quantity feed of powder and particulate body |
| JPS61140415A (en) * | 1984-12-14 | 1986-06-27 | Nippon Spindle Mfg Co Ltd | Powder transport method |
| CN104512730B (en) * | 2013-09-30 | 2017-01-18 | 宁夏嘉翔自控技术有限公司 | Electric automatic control system of boiler dust removal pneumatic transmission system |
| CN104555456A (en) * | 2013-10-20 | 2015-04-29 | 宁夏嘉翔自控技术有限公司 | Automatic electrical control system of pneumatic wheat conveying system |
| CN104555455A (en) * | 2013-10-20 | 2015-04-29 | 宁夏嘉翔自控技术有限公司 | Electric automatic control system of double-bunker pneumatic conveying system for limestone powder |
| CN107892182A (en) * | 2017-12-27 | 2018-04-10 | 新乡市高服机械股份有限公司 | Granular material malleation conveys online weighing device |
-
1979
- 1979-10-17 JP JP13404579A patent/JPS5934605B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5661227A (en) | 1981-05-26 |
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