JP2015168490A - powder supply equipment - Google Patents

powder supply equipment Download PDF

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JP2015168490A
JP2015168490A JP2014042442A JP2014042442A JP2015168490A JP 2015168490 A JP2015168490 A JP 2015168490A JP 2014042442 A JP2014042442 A JP 2014042442A JP 2014042442 A JP2014042442 A JP 2014042442A JP 2015168490 A JP2015168490 A JP 2015168490A
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valve
gas
feed tank
pipe
powder
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知則 大元
Tomonori Omoto
知則 大元
知也 福本
Tomoya Fukumoto
知也 福本
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JFE Steel Corp
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JFE Steel Corp
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Abstract

PROBLEM TO BE SOLVED: To provide powder supply equipment capable of slow exhaust without allowing powder to adhere to an opening adjustment valve.SOLUTION: Powder supply equipment 1 includes: a feed tank 2; gas piping 3 connected to the feed tank 2 and provided with an on/off valve 4; main gas discharge piping 12 connected to the gas piping 3 on a side nearer to the feed tank 2 than the on/off valve 4 is, and provided with an on/off valve 11; and sub gas discharge piping 14 connected to the gas piping 3 on a side nearer to the feed tank 2 than the on/off valve 4 is, and provided with an on/off valve 13. When the on/off valve 4 and the on/off valve 11 are closed, the on/off valve 13 is opened, and gas is discharged from the feed tank 2 through the sub gas discharge piping 14, the sub gas discharge piping 14 has piping resistance that gradually decreases internal pressure of the feed tank 2 at the speed equal to or under 1.6 [Pa/s].

Description

本発明は、粉体供給設備に関し、より詳細には、フィードタンクから粉体を排出した後に、粉体を新たにフィードタンクへ装填する際に使用される開度調節弁に粉体が付着することを防ぐ技術に関する。   The present invention relates to a powder supply facility, and more specifically, after the powder is discharged from the feed tank, the powder adheres to an opening degree control valve used when the powder is newly loaded into the feed tank. It relates to technology to prevent this.

製鉄所では、溶銑中の不純物を除去するために、溶銑に対して溶銑予備処理が行なわれる。溶銑予備処理では、タンクに収容された粉体状の精錬剤が、配管を通じて、溶銑鍋や転炉に収容されている溶銑に供給される。このように、一般に工場では、粉体を処理物に供給して、処理物に対して化学処理が行われており、工場には粉体を供給する設備（粉体供給設備）が設けられている。   In the ironworks, hot metal pretreatment is performed on the hot metal in order to remove impurities in the hot metal. In the hot metal preliminary treatment, the powdery refining agent stored in the tank is supplied to the hot metal stored in the hot metal ladle or converter through the pipe. As described above, in general, in a factory, powder is supplied to a processed material, and the chemical treatment is performed on the processed material. In the factory, equipment for supplying powder (powder supply equipment) is provided. Yes.

粉体供給設備として、例えば、特許文献１に粉体供給装置が提案されている。特許文献１の粉体供給装置は、粉体を保管するフィードタンクと、該フィードタンクに接続されている粉体輸送配管と、該粉体輸送配管に設けられかつ粉体量を調節する粉体用バルブと、を有しており、粉体輸送配管を通じてフィードタンク内の粉体を燃焼炉へ供給している。特許文献１には、粉体用バルブが閉塞することを防ぎ、粉体を安定して燃焼炉に供給することが記載されている。   As a powder supply facility, for example, Patent Document 1 proposes a powder supply apparatus. The powder supply device of Patent Document 1 includes a feed tank that stores powder, a powder transport pipe connected to the feed tank, and a powder that is provided in the powder transport pipe and adjusts the amount of powder. And the powder in the feed tank is supplied to the combustion furnace through the powder transport pipe. Patent Document 1 describes that a powder valve is prevented from being blocked and powder is stably supplied to a combustion furnace.

特開２０１２−１７１７４０号公報JP 2012-171740 A

特許文献１の粉体供給装置では、高圧のガスをフィードタンクに供給してフィードタンクを昇圧し、ガスとともにフィードタンク内の粉体を燃焼炉へ供給している。粉体を燃焼炉へ供給した後でもフィードタンクの内圧は高く、粉体をフィードタンクに装填することは困難であることから、フィードタンクを減圧してから粉体を装填することになる。但し、特許文献１では、この減圧について説明が省略されている。そこで、以下、図２を参照してフィードタンクを減圧する方法について説明する。   In the powder supply apparatus of Patent Document 1, high-pressure gas is supplied to a feed tank to raise the pressure of the feed tank, and the powder in the feed tank is supplied to the combustion furnace together with the gas. Even after the powder is supplied to the combustion furnace, the internal pressure of the feed tank is high and it is difficult to load the powder into the feed tank. Therefore, the powder is loaded after the pressure of the feed tank is reduced. However, in patent document 1, description about this pressure reduction is abbreviate | omitted. Therefore, a method for depressurizing the feed tank will be described below with reference to FIG.

図２は、フィードタンク及び配管の構成が、特許文献１に記載の粉体供給装置と類似している従来技術の粉体供給装置を示す。粉体供給装置１００は、粉体供給対象の設備７に粉体輸送配管８を介して接続されるフィードタンク２と、該フィードタンク２に接続されるガス配管３と、を有する。ガス配管３には開度調節弁（開閉弁）４が設けられており、該開度調節弁４からみてフィードタンク２の反対側では、ガス配管３は２本に分岐していて、一方の分岐管３ａは、開閉弁５ａが設けられかつ大気に開放しており、もう一方の分岐管３ｂには、開閉弁５ｂが設けられかつ加圧機構１０が接続している。   FIG. 2 shows a conventional powder supply apparatus in which the feed tank and piping are similar in structure to the powder supply apparatus described in Patent Document 1. The powder supply apparatus 100 includes a feed tank 2 connected to an equipment 7 to be supplied with powder via a powder transport pipe 8, and a gas pipe 3 connected to the feed tank 2. The gas pipe 3 is provided with an opening degree adjusting valve (open / close valve) 4. The gas pipe 3 is branched into two on the opposite side of the feed tank 2 from the opening degree adjusting valve 4. The branch pipe 3a is provided with an open / close valve 5a and is open to the atmosphere, and the other branch pipe 3b is provided with an open / close valve 5b and a pressurizing mechanism 10 is connected thereto.

まず、粉体源９からフィードタンク２に粉体を供給して、フィードタンク２に粉体を装填する。次いで、開閉弁５ａを閉とするとともに開度調節弁４及び開閉弁５ｂを開とし、ガス供給源６から加圧機構１０でガスを加圧して、分岐管３ｂ及びガス配管３を通じてフィードタンク２にガスを供給し、開度調節弁４でガス流量を調整しつつ、フィードタンク２を昇圧する。フィードタンク２がある程度昇圧されたら、開度調節弁４及び開閉弁５ｂを閉とし、高圧のガスで粉体を、粉体輸送配管８を通じて粉体供給対象の設備７に供給する。なお、図２に示すように、加圧機構１０を粉体輸送配管８に接続し、加圧機構１０で粉体輸送配管８内を加圧してもよい。   First, powder is supplied from the powder source 9 to the feed tank 2, and the feed tank 2 is loaded with powder. Next, the opening / closing valve 5a is closed, the opening degree adjusting valve 4 and the opening / closing valve 5b are opened, the gas is pressurized by the pressurizing mechanism 10 from the gas supply source 6, and the feed tank 2 is passed through the branch pipe 3b and the gas pipe 3. The pressure of the feed tank 2 is increased while the gas flow rate is adjusted by the opening degree adjusting valve 4. When the pressure of the feed tank 2 is increased to some extent, the opening control valve 4 and the on-off valve 5b are closed, and the powder is supplied to the powder supply target equipment 7 through the powder transport pipe 8 with high-pressure gas. As shown in FIG. 2, the pressurizing mechanism 10 may be connected to the powder transport pipe 8, and the inside of the powder transport pipe 8 may be pressurized by the pressurizing mechanism 10.

次に、粉体供給設備１００は、開度調節弁４よりフィードタンク２側のガス配管３に接続され、開閉弁１１１が設けられたガス排出配管１１２を有し、該ガス排出配管１１２の他端は大気開放している。フィードタンク２から粉体を排出した後に、開閉弁１１１を開とすることで、ガス排出配管１１２からフィードタンク２のガスを大気に放出して、フィードタンク２を減圧する。この減圧を行う際、粉体供給設備１００を構成する配管などの磨耗を低減することを目的として、まずは、フィードタンク２の内圧が所定値となるまで、開閉弁５ｂを閉とするとともに開閉弁５ａを開とし、開度調節弁４の開度を調節して、一点鎖線で示す流れでガスを大気に緩やかに放出して（緩排気）、フィードタンク２の内圧を漸減させる。内圧が所定値となったら、開閉弁１１１を開とすることで、点線で示す流れで、ガス排出配管１１２からガスを大気に放出して、フィードタンク２の減圧を更に進める（急排気）。減圧したフィードタンク２に、粉体源９から粉体を再び装填する。   Next, the powder supply equipment 100 has a gas discharge pipe 112 connected to the gas pipe 3 on the feed tank 2 side from the opening degree control valve 4 and provided with an on-off valve 111. The edge is open to the atmosphere. After the powder is discharged from the feed tank 2, the on-off valve 111 is opened to release the gas in the feed tank 2 from the gas discharge pipe 112 to the atmosphere, and the feed tank 2 is decompressed. When this pressure reduction is performed, for the purpose of reducing wear of the piping constituting the powder supply equipment 100, first, the on-off valve 5b is closed and the on-off valve until the internal pressure of the feed tank 2 reaches a predetermined value. 5a is opened, the opening degree of the opening degree adjusting valve 4 is adjusted, the gas is gently released to the atmosphere (slow exhaust) by the flow shown by the one-dot chain line, and the internal pressure of the feed tank 2 is gradually reduced. When the internal pressure reaches a predetermined value, the on-off valve 111 is opened to release the gas from the gas discharge pipe 112 to the atmosphere in accordance with the flow indicated by the dotted line, and the feed tank 2 is further depressurized (rapid exhaust). The depressurized feed tank 2 is again loaded with powder from the powder source 9.

粉体供給対象の設備７に粉体を供給した後でも、フィードタンク２には粉体が少量残ってしまうので、一点鎖線に示す通り、ガスの放出時では、ガスとともに粉体が開度調節弁４を通過し、粉体が開度調節弁４に付着する。ガスの供給及び大気放出を繰り返していると、やがて、粉体が開度調節弁４に固着してしまい、開度を所望に調節できなくなる可能性が生じる。   Even after the powder is supplied to the equipment 7 to which the powder is to be supplied, a small amount of powder remains in the feed tank 2, so that when the gas is released, the opening of the powder is adjusted together with the gas as shown by the one-dot chain line. Passing through the valve 4, the powder adheres to the opening adjustment valve 4. If the supply of gas and the release to the atmosphere are repeated, the powder will eventually adhere to the opening control valve 4 and the opening may not be adjusted as desired.

本発明は、この問題に鑑みてなされたもので、その目的とするところは、開度調節弁に粉体を固着させることなく、緩排気を可能とする粉体供給設備を提供することである。   The present invention has been made in view of this problem, and an object of the present invention is to provide a powder supply facility that allows slow exhaust without fixing powder to the opening control valve. .

上記課題を解決するための本発明の要旨は以下の通りである。
フィードタンクと、該フィードタンクに接続され、開閉弁が設けられたガス配管と、該ガス配管の開閉弁よりフィードタンク側で前記ガス配管に接続され、開閉弁が設けられたガス排出主配管と、前記ガス配管の開閉弁よりフィードタンク側で前記ガス配管に接続され、開閉弁が設けられたガス排出副配管と、を有する粉体供給設備であって、前記ガス配管の開閉弁及び前記ガス排出主配管の開閉弁を閉とするとともに、前記ガス排出副配管の開閉弁を開として、前記ガス排出副配管を通じて前記フィードタンクからガスを排出するときに、前記ガス排出副配管が、前記フィードタンクの内圧を１．６［Ｐａ／秒］以下で漸減させる配管抵抗を有していることを特徴とする粉体供給設備。 The gist of the present invention for solving the above problems is as follows.
A feed tank, a gas pipe connected to the feed tank and provided with an on-off valve, and a gas discharge main pipe connected to the gas pipe on the feed tank side from the on-off valve of the gas pipe and provided with an on-off valve; A gas supply sub-pipe connected to the gas pipe on the feed tank side from the gas pipe on-off valve and provided with the on-off valve, wherein the gas pipe on-off valve and the gas When the gas discharge subpipe is discharged from the feed tank through the gas discharge subpipe, the gas discharge subpipe is closed when the gas discharge subpipe open / close valve is opened and the gas discharge subpipe is opened. A powder supply facility characterized by having a pipe resistance that gradually reduces the internal pressure of the tank to 1.6 [Pa / sec] or less.

本発明の粉体供給設備のガス配管には、フィードタンクの内圧が１．６［Ｐａ／秒］以下で漸減させる配管抵抗を有するガス排出副配管が接続されているので、ガス配管に設けられた開度調節弁（開閉弁）及びガス排出主配管に設けられた開閉弁を閉とし、ガス排出副配管に設けられた開閉弁を開とすることで、まずは、ガス排出副配管からフィードタンクから緩やかにガスを排出し、次いで、フィードタンクの内圧が所定値以下となったら、ガス排出主配管の開閉弁を開とし、ガス排出主配管からのガスの排出を促進する操作が可能である。このようにすれば、ガス配管に設けられた開度調節弁を用いなくても、フィードタンクの緩排気を行うことができ、粉体が開度調節弁を通過しないので、粉体が開度調節弁に固着することを防止し得る。   The gas pipe of the powder supply facility of the present invention is connected to a gas discharge sub-pipe having a pipe resistance that gradually decreases when the internal pressure of the feed tank is 1.6 [Pa / sec] or less. The opening control valve (open / close valve) and the open / close valve provided in the gas exhaust main pipe are closed, and the open / close valve provided in the gas exhaust sub pipe is opened. After the gas is slowly discharged from the gas tank, then when the internal pressure of the feed tank falls below the predetermined value, the gas discharge main pipe can be opened to open the gas discharge main pipe to facilitate the gas discharge. . In this way, the feed tank can be slowly exhausted without using the opening control valve provided in the gas pipe, and the powder does not pass through the opening control valve. It can prevent sticking to the control valve.

本発明の実施形態の一例となる粉体供給設備を示す説明図である。It is explanatory drawing which shows the powder supply equipment used as an example of embodiment of this invention. 従来技術の粉体供給設備を示す説明図である。It is explanatory drawing which shows the powder supply equipment of a prior art.

添付図面を参照して、本発明の実施形態の一例である粉体供給設備を以下に説明する。図１は、粉体供給設備を示す説明図であり、図２に示す粉体供給設備の配管構成を改造したものである。粉体供給設備１においては、粉体供給設備１００と同じ構成要素について同じ符号を及び名称を用いて表し、適宜説明を省略する。粉体供給設備１は、フィードタンク２と、該フィードタンク２に接続され、開度調節弁４が設けられたガス配管３と、該ガス配管３に接続され、開閉弁１１が設けられたガス排出主配管１２と、を有する。粉体供給設備１の開閉弁１１及びガス排出主配管１２は、粉体供給設備１００の開閉弁１１１及びガス排出配管１１２に対応する。粉体供給設備１は、ガス排出主配管１２の接続位置よりもフィードタンク２側のガス配管３に接続され、開閉弁１３が設けられたガス排出副配管１４を更に有する。該ガス排出副配管１４は、他端が大気に開放している。   A powder supply facility as an example of an embodiment of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is an explanatory view showing a powder supply facility, and is a modified pipe configuration of the powder supply facility shown in FIG. In the powder supply facility 1, the same constituent elements as those of the powder supply facility 100 are denoted by the same reference numerals and names, and description thereof will be omitted as appropriate. The powder supply equipment 1 includes a feed tank 2, a gas pipe 3 connected to the feed tank 2 and provided with an opening degree adjusting valve 4, and a gas connected to the gas pipe 3 and provided with an on-off valve 11. And a discharge main pipe 12. The on-off valve 11 and the gas discharge main pipe 12 of the powder supply facility 1 correspond to the on-off valve 111 and the gas discharge pipe 112 of the powder supply facility 100. The powder supply facility 1 further includes a gas discharge sub-pipe 14 that is connected to the gas pipe 3 on the feed tank 2 side of the connection position of the gas discharge main pipe 12 and provided with an on-off valve 13. The other end of the gas discharge sub-pipe 14 is open to the atmosphere.

粉体供給対象の設備７に粉体を供給した後でもフィードタンク２の内圧は高いが、粉体をフィードタンク２に装填するために減圧を行う必要がある。粉体供給設備１を構成する配管などの摩耗を低減するために、まずは、開度調節弁（ガス配管の開閉弁）４及び開閉弁（ガス排出主配管の開閉弁）１１を閉とするとともに、開閉弁（ガス排出副配管の開閉弁）１３を開として、フィードタンク２の内圧が所定値となるまで、一点鎖線で示す流れで、ガス排出副配管１４からガスを排出（大気に放出）する。ガス排出副配管１４は、この際、フィードタンク２の内圧を１．６［Ｐａ／秒］以下で漸減させる配管抵抗を有する。フィードタンク２の内圧を１．６［Ｐａ／秒］以下で漸減させれば、フィードタンク２内に残っていた粉体が粉体供給設備１の配管などに衝突しても、衝突による衝撃が抑えられ、配管などの摩耗を低減することができる。   Although the internal pressure of the feed tank 2 is high even after the powder is supplied to the equipment 7 to be supplied with the powder, it is necessary to reduce the pressure in order to load the powder into the feed tank 2. In order to reduce wear on the pipes constituting the powder supply equipment 1, first, the opening degree control valve (gas pipe on-off valve) 4 and the on-off valve (gas discharge main pipe on-off valve) 11 are closed. The on-off valve (on / off valve of the gas discharge sub-pipe) 13 is opened, and the gas is discharged from the gas discharge sub-pipe 14 (released to the atmosphere) in the flow indicated by the alternate long and short dash line until the internal pressure of the feed tank 2 reaches a predetermined value. To do. At this time, the gas discharge sub-pipe 14 has a pipe resistance that gradually reduces the internal pressure of the feed tank 2 to 1.6 [Pa / sec] or less. If the internal pressure of the feed tank 2 is gradually reduced to 1.6 [Pa / sec] or less, even if the powder remaining in the feed tank 2 collides with the piping of the powder supply equipment 1, the impact due to the collision will occur. It is restrained and wear of piping etc. can be reduced.

ガスの配管抵抗は、気体の流れやすさを意味するコンダクタンス［ｍ３／秒］の逆数で表され、配管の長さや断面積で決まり、配管が長く断面積が小さいほど大きくなり、配管が短く断面積が大きいほど小さくなる。粉体供給対象の設備７に粉体をフィードタンク２から供給した後でも、例えば、フィードタンク２の内圧は１．０［Ｐａ］以上となっていて、このような高い内圧となったフィードタンク２を、まずは、ガス排出副配管１４で１．６［Ｐａ／秒］以下で緩やかに減圧する（緩排気）。また、更に緩やかに減圧するべく０．５［Ｐａ／秒］以下で減圧することが好ましい。ガス排出副配管１４でこの緩排気が実現可能なように、粉体供給対象の設備７に粉体を供給する操業における、粉体排出後のフィードタンク２の内圧を前もって測定しておき、ガス排出副配管１４の長さ及び断面積（管径）を決める。このため、図１及び図２では示していないが、フィードタンク２の圧力を測定する手段を設けてもよい。 The pipe resistance of gas is expressed by the reciprocal of conductance [m 3 / sec], which means the ease of gas flow, and is determined by the length and cross-sectional area of the pipe. The smaller the cross-sectional area, the smaller. Even after the powder is supplied from the feed tank 2 to the facility 7 to which the powder is to be supplied, for example, the internal pressure of the feed tank 2 is 1.0 [Pa] or more, and the feed tank has such a high internal pressure. 2 is first gradually reduced in pressure by the gas discharge sub-pipe 14 at 1.6 [Pa / sec] or less (slow exhaust). Further, it is preferable to reduce the pressure at 0.5 [Pa / sec] or less in order to reduce pressure more gently. The internal pressure of the feed tank 2 after powder discharge in the operation of supplying powder to the powder supply target equipment 7 is measured in advance so that this slow exhaust can be realized by the gas discharge sub-pipe 14. The length and cross-sectional area (tube diameter) of the discharge sub-pipe 14 are determined. For this reason, although not shown in FIGS. 1 and 2, a means for measuring the pressure in the feed tank 2 may be provided.

前述の所定値とは、例えば、０．５［Ｐａ］であり、この値以下の圧力でガスを流せば、圧力を急減に変動させても、粉体供給設備１を構成する配管などの磨耗を防止し得る。よって、フィードタンク２の内圧が所定値となったら、開閉弁１１を開とすることで、点線で示す流れで、ガス排出主配管１２からガスを大気に放出して、フィードタンク２の減圧を更に進めればよい（急排気）。なお、ガス排出主配管１２で急排気を行わなくても、ガス排出副配管１４による緩排気のみで、フィードタンク２の減圧を行うこともできる。   The above-mentioned predetermined value is, for example, 0.5 [Pa]. If gas is flowed at a pressure lower than this value, wear of piping and the like constituting the powder supply equipment 1 even if the pressure is suddenly changed. Can prevent. Therefore, when the internal pressure of the feed tank 2 reaches a predetermined value, the on-off valve 11 is opened to release the gas from the gas discharge main pipe 12 to the atmosphere in the flow shown by the dotted line, thereby reducing the pressure of the feed tank 2. You can go further (rapid exhaust). It should be noted that the feed tank 2 can be depressurized only by slow exhaustion by the gas discharge sub-pipe 14 without performing rapid exhaust by the gas discharge main pipe 12.

図１では、図２に示す粉体供給設備の配管構成を改造したものであるので、開度調節弁４からみてフィードタンク２の逆側で、ガス配管３が分岐して形成される分岐管３ａを示している。しかしながら、フィードタンク２からガスを排出する際に、ガス配管３において開度調節弁４を通過することがないので、分岐管３ａは不要である。また、粉体供給設備１では、ガス排出副配管１４は、ガス排出主配管１２の接続位置よりもフィードタンク２側のガス配管３に接続されている。しかしながら、前述の配管抵抗を有するガス排出副配管１４が、開度調節弁４よりもフィードタンク２側でガス配管３に接続されていれば、開度調節弁４及び開閉弁１１を閉とするとともに開閉弁１３を開として、ガス排出副配管１４のみでフィードタンク２から排気して、緩排気を行うことが可能である。よって、ガス配管３へのガス排出副配管１４の接続位置は、開度調節弁４よりもフィードタンク２側であれば、特に限定されない。   In FIG. 1, since the piping configuration of the powder supply facility shown in FIG. 2 is modified, a branch pipe formed by branching the gas pipe 3 on the opposite side of the feed tank 2 as viewed from the opening degree control valve 4. 3a is shown. However, when the gas is discharged from the feed tank 2, the branch pipe 3a is not necessary because the gas pipe 3 does not pass through the opening control valve 4. Further, in the powder supply facility 1, the gas discharge sub-pipe 14 is connected to the gas pipe 3 on the feed tank 2 side with respect to the connection position of the gas discharge main pipe 12. However, if the gas discharge sub-pipe 14 having the above-described pipe resistance is connected to the gas pipe 3 on the feed tank 2 side with respect to the opening control valve 4, the opening control valve 4 and the on-off valve 11 are closed. At the same time, the on-off valve 13 can be opened, and the exhaust from the feed tank 2 can be performed only by the gas discharge sub-pipe 14 to perform slow exhaust. Therefore, the connection position of the gas discharge sub-pipe 14 to the gas pipe 3 is not particularly limited as long as it is closer to the feed tank 2 than the opening adjustment valve 4.

以上の構成により、ガス排出副配管からフィードタンクから緩やかにガス排出し、次いで、フィードタンクの内圧が所定値以下となったら、ガス排出主配管からのガスの排出を促進する操作が可能である。このようにすれば、ガス配管に設けられた開度調節弁を用いることなく、フィードタンクの緩排気を行った後に、排気を更に促進させることができ、粉体が開度調節弁を通過することなく、開度調節弁に粉体が固着することを防止し得る。   With the above configuration, gas can be gradually discharged from the feed tank from the gas discharge sub-pipe, and then, when the internal pressure of the feed tank becomes a predetermined value or less, an operation for promoting the discharge of gas from the gas discharge main pipe is possible. . In this way, the exhaust can be further promoted after the feed tank is slowly exhausted without using the opening control valve provided in the gas pipe, and the powder passes through the opening control valve. Without this, it is possible to prevent the powder from adhering to the opening control valve.

１ （本発明の実施形態に係る）粉体供給設備
２ フィードタンク
３ ガス配管
３ａ 分岐管（大気開放）
３ｂ 分岐管（ガス供給源に接続）
４ 開度調節弁（開閉弁）
５ａ 開閉弁
５ｂ 開閉弁
６ ガス供給源
７ 粉体供給対象の設備
８ 粉体輸送配管
９ 粉体源
１０ 加圧機構
１１ 開閉弁
１２ ガス排出主配管
１３ 開閉弁
１４ ガス排出副配管
１００ （従来技術の）粉体供給設備
１１１ 開閉弁
１１２ ガス排出配管 1 Powder supply equipment (according to an embodiment of the present invention) 2 Feed tank 3 Gas pipe 3a Branch pipe (open to the atmosphere)
3b Branch pipe (connected to gas supply source)
4 Opening control valve (open / close valve)
5a Open / close valve 5b Open / close valve 6 Gas supply source 7 Equipment for powder supply 8 Powder transport pipe 9 Powder source 10 Pressurizing mechanism 11 Open / close valve 12 Gas discharge main pipe 13 Open / close valve 14 Gas discharge sub pipe 100 (Prior art) )) Powder supply equipment 111 On-off valve 112 Gas exhaust pipe

Claims (1)

フィードタンクと、
該フィードタンクに接続され、開閉弁が設けられたガス配管と、
該ガス配管の開閉弁よりフィードタンク側で前記ガス配管に接続され、開閉弁が設けられたガス排出主配管と、
前記ガス配管の開閉弁よりフィードタンク側で前記ガス配管に接続され、開閉弁が設けられたガス排出副配管と、を有する粉体供給設備であって、
前記ガス配管の開閉弁及び前記ガス排出主配管の開閉弁を閉とするとともに、前記ガス排出副配管の開閉弁を開として、前記ガス排出副配管を通じて前記フィードタンクからガスを排出するときに、前記ガス排出副配管が、前記フィードタンクの内圧を１．６［Ｐａ／秒］以下で漸減させる配管抵抗を有していることを特徴とする粉体供給設備。 A feed tank,
A gas pipe connected to the feed tank and provided with an on-off valve;
A gas discharge main pipe connected to the gas pipe on the feed tank side from the on-off valve of the gas pipe, and provided with an on-off valve;
A gas supply sub-pipe connected to the gas pipe on the feed tank side from the on-off valve of the gas pipe, and provided with an on-off valve;
When closing the gas piping on-off valve and the gas discharge main piping on-off valve, and opening the gas discharge sub-piping on-off valve, when discharging gas from the feed tank through the gas discharge sub-piping, The powder supply facility, wherein the gas discharge sub-pipe has a pipe resistance that gradually reduces the internal pressure of the feed tank to 1.6 [Pa / sec] or less.
JP2014042442A 2014-03-05 2014-03-05 powder supply equipment Pending JP2015168490A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2019004114A (en) * 2017-06-19 2019-01-10 アスリートＦａ株式会社 Ball supply device and ball loading device

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09208050A (en) * 1996-01-31 1997-08-12 Kawasaki Steel Corp Powder and granular material blowing-control device

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09208050A (en) * 1996-01-31 1997-08-12 Kawasaki Steel Corp Powder and granular material blowing-control device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2019004114A (en) * 2017-06-19 2019-01-10 アスリートＦａ株式会社 Ball supply device and ball loading device
JP7005868B2 (en) 2017-06-19 2022-01-24 アスリートＦａ株式会社 Ball supply device and ball mounting device

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