JP2002013973A - Powder weighting device - Google Patents
Powder weighting deviceInfo
- Publication number
- JP2002013973A JP2002013973A JP2000197150A JP2000197150A JP2002013973A JP 2002013973 A JP2002013973 A JP 2002013973A JP 2000197150 A JP2000197150 A JP 2000197150A JP 2000197150 A JP2000197150 A JP 2000197150A JP 2002013973 A JP2002013973 A JP 2002013973A
- Authority
- JP
- Japan
- Prior art keywords
- powder
- pressure
- expansion joint
- reaction force
- balanced
- 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
Links
Landscapes
- Weight Measurement For Supplying Or Discharging Of Specified Amounts Of Material (AREA)
Abstract
Description
【0001】[0001]
【発明の属する技術分野】本発明は、粉体容器内に収容
された微粉炭、チャー(燃焼残渣)等の粉体を、該粉体容
器の下方に配設された計量用ホッパに導くとともに、該
計量用ホッパの上部に、伸縮継手が上下に介装された支
持用架台梁を設け、ロードセルにより該計量用ホッパに
導入される粉体の重量を計測するようにした粉体重量計
測装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for guiding powder such as pulverized coal and char (combustion residue) contained in a powder container to a weighing hopper disposed below the powder container. A powder weight measuring device provided with a supporting gantry having an expansion joint vertically interposed above the weighing hopper and measuring the weight of the powder introduced into the weighing hopper by a load cell; About.
【0002】[0002]
【従来の技術】図14は、石炭ガス化炉に、微粉炭ある
いはチャー等の粉体を供給する粉体供給システムにおい
て、該粉体の重量を計測する粉体重量計測装置の従来の
1例を示す。同図において、1は被計測対象である前記
粉体が収容されるビン、11は最下部に設置されて粉体
重量を計量するための計量用ホッパであり、該ビン1と
計量用ホッパ11とを接続する鉛直な粉体管路023に
は、該粉体の圧力を30kg/cm2程度の高圧に加圧
して溜めるロックホッパ7が設けられている。2. Description of the Related Art FIG. 14 shows a conventional powder weight measuring device for measuring the weight of a powder in a powder supply system for supplying powder such as pulverized coal or char to a coal gasifier. Is shown. In FIG. 1, reference numeral 1 denotes a bin for storing the powder to be measured, 11 denotes a weighing hopper installed at the lowermost portion for weighing the powder, and the bin 1 and the weighing hopper 11 are provided. Is provided with a lock hopper 7 for storing the powder by pressurizing the powder to a high pressure of about 30 kg / cm 2 .
【0003】前記粉体管路023の、前記ビン1の粉体
出口及びロックホッパ7の粉体出口には、該粉体管路0
23を開閉する粉体弁2、2が配設されている。また、
前記ビン1とロックホッパ7との間の粉体管路023及
びロックホッパ7と計量用ホッパ11との間の粉体管路
023には、支持用の架台梁5、5が介装され、各架台
梁5、5の上下面と前記粉体管路023との間には伸縮
継手3が夫々介装されている。さらに、前記上部側の伸
縮継手3とロックホッパ7との間の粉体管路023及び
該ロックホッパ7出口の粉体弁2と下部側の伸縮継手3
との間の粉体管路023には、該粉体管路023を流体
密に閉止可能とする気密弁6、6が夫々介装されてい
る。4は前記粉体が溜められた計量用ホッパ11の重量
を計測するロードセルである。[0003] The powder line 023 has a powder outlet of the bottle 1 and a powder outlet of the lock hopper 7.
Powder valves 2 and 2 for opening and closing 23 are provided. Also,
In the powder line 023 between the bin 1 and the lock hopper 7 and the powder line 023 between the lock hopper 7 and the weighing hopper 11, supporting gantry beams 5, 5 are interposed. An expansion joint 3 is interposed between the upper and lower surfaces of each of the gantry beams 5, 5 and the powder pipeline 023, respectively. Further, a powder pipe 023 between the upper expansion joint 3 and the lock hopper 7, a powder valve 2 at the outlet of the lock hopper 7, and a lower expansion joint 3
The airtight valves 6 and 6 which can close the powder pipe 023 fluid-tightly are interposed in the powder pipe 023 between them. Reference numeral 4 denotes a load cell for measuring the weight of the weighing hopper 11 in which the powder is stored.
【0004】かかる粉体重量計測装置により粉体の重量
を計測する際には、前記上部側の粉体弁2及び気密弁6
を開いて、ビン1内の粉体をロックホッパ7内に送った
後、上部側の気密弁6を閉じ、前記ロックホッパ7内で
該粉体の圧力を30kg/cm2程度の高圧に加圧す
る。次いで、ロックホッパ7出口の粉体弁2及び下部側
の気密弁6を開いてロックホッパ7内の高圧粉体を計量
用ホッパ11内に送り、前記ロードセル4により該計量
用ホッパ11の重量を計測する。重量を計測された後の
高圧粉体は石炭ガス化炉に送られる。When the powder weight is measured by such a powder weight measuring device, the powder valve 2 and the airtight valve 6 on the upper side are required.
Is opened to send the powder in the bottle 1 into the lock hopper 7, the upper airtight valve 6 is closed, and the pressure of the powder is increased to a high pressure of about 30 kg / cm 2 in the lock hopper 7. Press. Next, the powder valve 2 at the outlet of the lock hopper 7 and the airtight valve 6 on the lower side are opened to send the high-pressure powder in the lock hopper 7 into the weighing hopper 11, and the weight of the weighing hopper 11 is reduced by the load cell 4. measure. After being weighed, the high-pressure powder is sent to a coal gasifier.
【0005】ここで、前記ロックホッパ7と計量用ホッ
パ11との間の粉体管路023及び伸縮継手3内には、
30kg/cm2程度に加圧された高圧粉体が通過する
ため、伸縮継手3内の内圧による圧力反力及び該伸縮継
手3のばね反力が前記ロードセル4により計量される。
従って、計量用ホッパ11に溜められた粉体の実重量W
は、かかる反力を考慮して、次の(1)式で算出され
る。先ず、ロードセル計量重量W1は、 W1=W2+W+F1+F2 従って、粉体の実重量Wは、 W=W1−(W2+F1+F2) (1) ここで、W2:計量用ホッパ11の重量 F1:伸縮継手3内の内圧による圧力反力(以下、圧力
反力という)=P0・A1(P0は伸縮継手3内の内
圧、A1は伸縮継手3の断面積) F2:伸縮継手3のばね反力(以下、ばね反力という)Here, the lock hopper 7 and the weighing hopper
In the powder pipeline 023 and the expansion joint 3 between the
30kg / cm2High pressure powder that has been pressurized to about
Therefore, the pressure reaction force due to the internal pressure in the expansion joint 3 and the expansion joint
The spring reaction force of the hand 3 is measured by the load cell 4.
Therefore, the actual weight W of the powder stored in the weighing hopper 11
Is calculated by the following equation (1) in consideration of the reaction force.
You. First, the load cell weight W1Is W1= W2+ W + F1+ F2 Therefore, the actual weight W of the powder is: W = W1− (W2+ F1+ F2(1) where W2: Weight of weighing hopper 11 F1: Pressure reaction force due to internal pressure in expansion joint 3 (hereinafter referred to as pressure
Reaction force) = P0・ A1(P0Is the expansion joint 3
Pressure, A1Is the cross-sectional area of the expansion joint 3) F2: Spring reaction force of expansion joint 3 (hereinafter referred to as spring reaction force)
【0006】[0006]
【発明が解決しようとする課題】図16は、図14に示
されるような粉体重量計測装置における、伸縮継手3の
口径と前記圧力反力との関係を示す線図で、A線は前記
P0=30kg/cm2、B線はP0=1kg/cm2
の場合、図17は前記粉体重量計測装置における伸縮継
手3の変位と前記ばね反力との関係を示す線図で、A線
は伸縮継手3のばね定数K=40kg/mm、B線はK
=5kg/mmの場合を示す。図14に示される粉体重
量計測装置においては、前記のように30kg/cm 2
程度の高圧粉体が通過する伸縮継手3内の圧力反力F1
がロードセル計量重量W1に含まれている。然るに、図
16のA線に示されるように、伸縮継手3内の内圧P0
=30kg/cm2で伸縮継手3の口径200mmのと
き、前記圧力反力F1=約10000kgと、きわめて
大きく、このため重量計測される粉体の量が少ない場合
には、ロードセル計量重量W1から前記(1)にて算出
される粉体の実重量Wに大きな誤差が生じ、高精度の粉
体重量は得られ難い。FIG. 16 is a diagram showing the configuration shown in FIG.
Of the expansion joint 3 in the powder weight measuring device
In the diagram showing the relationship between the diameter and the pressure reaction force, the line A is the
P0= 30kg / cm2, Line B is P0= 1kg / cm2
FIG. 17 shows an expansion joint in the powder weight measuring device.
FIG. 4 is a diagram showing a relationship between the displacement of the hand 3 and the spring reaction force,
Is the spring constant K of the expansion joint 3 = 40 kg / mm, and the B line is K
= 5 kg / mm. Powder weight shown in FIG.
In the quantity measuring device, as described above, 30 kg / cm 2
Pressure reaction force F in the expansion joint 3 through which the high pressure powder passes1
Is load cell weighing weight W1Included in. But figure
As shown in line A of FIG. 16, the internal pressure P in the expansion joint 30
= 30kg / cm2And the diameter of the expansion joint 3 is 200 mm
The pressure reaction force F1= About 10,000 kg
Large and therefore the amount of weighed powder is small
Has a load cell weight W1Calculated from (1) above
A large error occurs in the actual weight W of the powder to be
Body weight is difficult to obtain.
【0007】かかる問題点を解決する手段として、図1
5に示される粉体重量計測装置が提案されている。かか
る装置においては、前記計量用ホッパ11の下部に圧力
相殺伸縮継手03を設け、該圧力相殺伸縮継手03によ
って、計量用ホッパ11を介してロードセル4に前記圧
力反力F1に相当する上向きの力を加えて前記圧力反力
F1を相殺し、該圧力反力F1による粉体重量の計量誤
差を大幅に低減している。その他の構成は図14と同様
であり、これと同一の部材は同一の符号で示す。As means for solving such a problem, FIG.
5 has been proposed. In such a device, a pressure canceling expansion joint 03 is provided at a lower portion of the weighing hopper 11, and the pressure canceling expansion joint 03 causes the load cell 4 via the weighing hopper 11 to face the upward direction corresponding to the pressure reaction force F 1. by applying a force to offset the pressure reaction force F 1, which greatly reduces the weighing errors of the powder weight according to the pressure reaction force F 1. Other configurations are the same as those in FIG. 14, and the same members are denoted by the same reference numerals.
【0008】しかしながら、図15に示される粉体重量
計測装置にあっては、前記のように、圧力反力F1によ
る粉体重量の計量誤差は大幅に低減されるが、前記圧力
相殺伸縮継手03の圧力反力、即ち前記のように伸縮継
手3内の内圧P0=30kg/cm2で伸縮継手3の口
径200mmのとき、該圧力反力F1=約10000k
gと、きわめて大きい圧力反力が下部側の架台梁5に作
用し、該架台梁5に高応力による破壊の発生をみること
がある。However, in the powder weight measuring apparatus shown in Figure 15, as described above, the pressure measuring error of the weight of the powder due to the reaction force F 1 is greatly reduced, the pressure counteracting expansion joint 03, that is, when the internal pressure P 0 in the expansion joint 3 is 30 kg / cm 2 and the diameter of the expansion joint 3 is 200 mm as described above, the pressure reaction force F 1 = about 10,000 k
g and an extremely large pressure reaction force act on the lower gantry 5, and the gantry 5 may be broken by high stress.
【0009】本発明はかかる従来技術の課題に鑑み、高
圧粉体が通過する伸縮継手内の圧力反力による粉体重量
の計量誤差を皆無とするとともに、該圧力反力による架
台梁の作用荷重を低減して、該架台梁の高応力による破
壊の発生を防止した粉体重量計測装置を提供することを
目的とする。The present invention has been made in view of the above-mentioned problems of the prior art, and eliminates the measurement error of the powder weight due to the pressure reaction force in the expansion joint through which the high-pressure powder passes. It is an object of the present invention to provide a powder weight measuring device in which the gantry beam is prevented from breaking due to high stress.
【0010】[0010]
【課題を解決するための手段】本発明はかかる課題を解
決するため、請求項1記載の発明として、粉体容器内に
収容された微粉炭、チャー(燃焼残さ)等の粉体を前記粉
体容器の出口からの管路に接続されるロックホッパにて
昇圧し、該ロックホッパの出口管路を開閉する粉体弁を
経て該粉体弁の下方に配設された計量用ホッパに導くと
ともに、該粉体弁と計量用ホッパとの間に、前記ロック
ホッパに連通される伸縮継手が上下に介装された支持用
架台梁を設け、前記計量用ホッパに設けられたロードセ
ルにより該計量用ホッパに導入される前記粉体の重量を
計測するように構成された粉体重量計測装置において、
前記架台梁の上下に設けられた前記伸縮継手を、該伸縮
継手内部における圧力が均衡されて該伸縮継手から前記
架台梁側への圧力反力の作用を阻止する圧力均衡型伸縮
継手にて構成したことを特徴とする粉体重量計測装置を
提案する。In order to solve the above-mentioned problems, the present invention is directed to a method for producing powdered coal such as pulverized coal and char (combustion residue) contained in a powder container. The pressure is raised by a lock hopper connected to a pipe from the outlet of the body container, and the pressure is guided to a weighing hopper disposed below the powder valve via a powder valve that opens and closes the outlet pipe of the lock hopper. In addition, between the powder valve and the weighing hopper, a supporting gantry is provided in which an expansion joint communicated with the lock hopper is vertically interposed, and the weighing hopper is provided with a load cell provided in the weighing hopper. In a powder weight measuring device configured to measure the weight of the powder introduced into the hopper for,
The expansion joints provided above and below the gantry are constituted by pressure-balanced expansion joints in which the pressure inside the expansion joint is balanced to prevent the action of a pressure reaction force from the expansion joint to the gantry side. We propose a powder weight measuring device characterized by the following.
【0011】請求項2記載の発明は、請求項1におい
て、前記圧力均衡型伸縮継手を、前記粉体弁と計量用ホ
ッパとの間に前記架台梁を挿んで2個直列に介装したこ
とを特徴とする。請求項3記載の発明は、請求項1にお
いて、前記粉体弁と圧力均衡型伸縮継手との間の粉体通
路に、該粉体通路を流体密に閉止可能とする気密弁を介
装したことを特徴とする。請求項4記載の発明は、請求
項1において、前記圧力均衡型伸縮継手と計量用ホッパ
との間に、粉体通路を流体密に閉止可能とする気密弁を
介装したことを特徴とする。According to a second aspect of the present invention, in the first aspect, two of the pressure-balancing type expansion joints are interposed in series by inserting the gantry between the powder valve and the weighing hopper. It is characterized by. According to a third aspect of the present invention, in the first aspect, an airtight valve is provided in the powder passage between the powder valve and the pressure-balancing type expansion joint so as to close the powder passage in a fluid-tight manner. It is characterized by the following. According to a fourth aspect of the present invention, in the first aspect, an airtight valve that allows the powder passage to be fluid-tightly closed is provided between the pressure-balancing expansion joint and the weighing hopper. .
【0012】請求項5記載の発明は、請求項1におい
て、前記圧力均衡型伸縮継手に、該圧力均衡型伸縮継手
の両端間の変位を計測して該圧力均衡型伸縮継手に作用
するばね反力を検出する変位検出器を設けたことを特徴
とする。請求項6記載の発明は、請求項1において、前
記圧力均衡型伸縮継手の下部と前記計量用ホッパとの間
に、該圧力均衡型伸縮継手から下方に作用する反力を計
測する反力計測用ロードセルを直列に配置したことを特
徴とする。According to a fifth aspect of the present invention, in the first aspect, a spring counteracting the pressure-balanced expansion joint by measuring a displacement between both ends of the pressure-balanced expansion joint. A displacement detector for detecting a force is provided. According to a sixth aspect of the present invention, in the first aspect, between the lower part of the pressure-balancing type expansion joint and the weighing hopper, a reaction force measurement for measuring a reaction force acting downward from the pressure-balancing type expansion joint. The load cells are arranged in series.
【0013】請求項1ないし6記載の発明によれば、高
圧粉体が通過するロックホッパ出口側の伸縮継手を内部
で圧力バランスがなされる圧力均衡型伸縮継手としてい
るので、該圧力均衡型伸縮継手の上下端面から粉体管路
に掛かる力即ち前記圧力反力が抑制され、従ってかかる
大きな圧力反力がロードセル計量重量に含まれないこと
となるため、該ロードセル計量重量から算出される粉体
の実重量の圧力反力による誤差が無くなり、従来技術に
比べて、大幅に高精度の粉体重量を得ることができる。According to the first to sixth aspects of the present invention, the expansion joint on the outlet side of the lock hopper through which the high-pressure powder passes is a pressure balanced expansion joint in which pressure is balanced inside. The force applied from the upper and lower end surfaces of the joint to the powder pipe line, that is, the pressure reaction force is suppressed, and the large pressure reaction force is not included in the load cell weighing weight. The error due to the pressure reaction force of the actual weight is eliminated, and the powder weight can be obtained with significantly higher precision than in the prior art.
【0014】また、かかる発明によれば、前記圧力均衡
型伸縮継手を設けることにより、前記のような大きな圧
力反力が圧力均衡型伸縮継手の一方側の支持端となって
いる前記ロックホッパと計量用ホッパとの間の支持用架
台梁に作用するのが回避され、該架台梁の、前記圧力反
力に起因する高応力による破壊の発生を防止することが
できる。Further, according to the present invention, by providing the pressure-balancing type expansion joint, the lock hopper having the large pressure reaction force as a support end on one side of the pressure-balancing type expansion joint is provided. Acting on the supporting gantry between the weighing hopper and the weighing hopper can be avoided, and the gantry can be prevented from being broken due to high stress caused by the pressure reaction force.
【0015】また請求項5のように構成すれば、変位検
出器により圧力均衡型伸縮継手の変位を計測し、この計
測値に基づきばね反力を算出するので、該ばね反力を正
確に求めることができ、チャーのような高温粉体の重量
計測を高精度で行うことができる。Further, according to the present invention, the displacement of the pressure-balancing type expansion joint is measured by the displacement detector, and the spring reaction force is calculated based on the measured value, so that the spring reaction force is accurately obtained. This makes it possible to measure the weight of high-temperature powder such as char with high accuracy.
【0016】さらに請求項6のように構成すれば、ひず
みゲージを備えた反力計測用ロードセルにより圧力均衡
型伸縮継手のばね反力を直接計測しているので、前記請
求項5よりも該ばね反力をさらに正確に求めることがで
き、チャーのような高温粉体の重量計測をさらなる高精
度で以って行うことができる。According to a sixth aspect of the present invention, the spring reaction force of the pressure-balanced expansion joint is directly measured by a reaction force measuring load cell provided with a strain gauge. The reaction force can be determined more accurately, and the weight measurement of a high-temperature powder such as char can be performed with higher precision.
【0017】請求項7ないし11記載の発明は、粉体容
器の出口通路に複数個の計量用ホッパを並列に配設して
なる粉体重量計測装置に係り、請求項7記載の発明は、
粉体容器内に収容された微粉炭、チャー(燃焼残さ)等の
粉体を、前記粉体容器の出口通路を開閉する粉体弁を経
て該粉体弁の下方に並列に複数個配設された計量用ホッ
パに複数の管路を介して導くとともに、前記粉体弁と各
計量用ホッパとの間に、前記各管路に連通される伸縮継
手が上下に介装された支持用の架台梁を設け、前記複数
個の計量用ホッパの一部を使用し他を待機させて、前記
各計量用ホッパに設けられたロードセルにより該計量用
ホッパに導入される前記粉体の重量を計測するように構
成された粉体重量計測装置において、前記架台梁の上下
に複数個設けられた前記伸縮継手の夫々を、該伸縮継手
内部における圧力が均衡されて該伸縮継手から前記架台
梁側への圧力反力の作用を阻止する圧力均衡型伸縮継手
にて構成したことを特徴とする。[0017] The invention according to claims 7 to 11 relates to a powder weight measuring device in which a plurality of weighing hoppers are arranged in parallel in an outlet passage of a powder container.
A plurality of powders such as pulverized coal and char (residue of combustion) stored in the powder container are arranged in parallel below the powder valve via a powder valve that opens and closes an outlet passage of the powder container. A plurality of pipes are guided to the weighing hopper through a plurality of pipes, and between the powder valve and each weighing hopper, an expansion joint communicated with each of the pipes is vertically supported. A gantry is provided, a part of the plurality of weighing hoppers is used and the others are put on standby, and the weight of the powder introduced into the weighing hopper is measured by a load cell provided in each of the weighing hoppers. In the powder weight measuring device configured to perform the above, each of the expansion joints provided above and below the gantry, the pressure inside the expansion joint is balanced, from the expansion joint to the gantry side Pressure-balanced expansion joint that prevents the action of pressure reaction force And it features.
【0018】請求項8記載の発明は、請求項7におい
て、前記圧力均衡型伸縮継手を、前記粉体弁と各計量用
ホッパとの間に前記架台梁を挿んで夫々2個直列に介装
したことを特徴とする。請求項9記載の発明は、請求項
7において、前記各圧力均衡型伸縮継手と各計量用ホッ
パとの間の粉体通路に、該粉体通路を流体密に閉止可能
とする気密弁を夫々介装したことを特徴とする。請求項
10記載の発明は、請求項7において、前記各圧力均衡
型伸縮継手に、該圧力均衡型伸縮継手の両端間の変位を
計測して該圧力均衡型伸縮継手に作用するばね反力を検
出する変位検出器を夫々設けたことを特徴とする。請求
項11記載の発明は、請求項7において、前記各圧力均
衡型伸縮継手の下部と前記各計量用ホッパとの間に、該
圧力均衡型伸縮継手から下方に作用する反力を計測する
反力計測用ロードセルを夫々直列に配置したことを特徴
とする。According to an eighth aspect of the present invention, in accordance with the seventh aspect, two of the pressure-balancing expansion joints are interposed in series by inserting the gantry between the powder valve and each weighing hopper. It is characterized by having done. According to a ninth aspect of the present invention, in the seventh aspect, an airtight valve that enables the powder passage to be fluid-tightly closed in the powder passage between each of the pressure-balancing type expansion joints and each of the weighing hoppers. It is characterized by being interposed. According to a tenth aspect of the present invention, in the seventh aspect, a spring reaction force acting on the pressure-balanced expansion joint is measured by measuring a displacement between both ends of the pressure-balanced expansion joint. It is characterized in that a displacement detector for detecting is provided. According to an eleventh aspect of the present invention, in the seventh aspect, between the lower portion of each of the pressure-balancing type expansion joints and each of the weighing hoppers, a reaction force for measuring a reaction force acting downward from the pressure-balancing type expansion joints. The load cells for force measurement are arranged in series.
【0019】請求項7ないし11記載の発明によれば、
請求項1ないし6記載の発明と同様に、各計量用ホッパ
の入口側の伸縮継手を、内部で圧力バランスがなされる
圧力均衡型伸縮継手としているので、該圧力均衡型伸縮
継手の上下端面から粉体管路に掛かる力即ち前記圧力反
力がロードセル計量重量に含まれないこととなるため、
該ロードセル計量重量から算出される粉体の実重量の、
前記大きな圧力反力による誤差が無くなり、従来技術に
比べて大幅に高精度の粉体重量を得ることができる。ま
た、前記圧力均衡型伸縮継手を設けることにより、前記
のような大きな圧力反力が各圧力均衡型伸縮継手の一方
側の支持端となっている架台梁に作用するのが回避さ
れ、前記圧力反力に起因する高応力による該架台梁の破
壊の発生が防止される。According to the invention of claims 7 to 11,
Similarly to the first to sixth aspects of the present invention, since the expansion joint on the inlet side of each weighing hopper is a pressure-balanced expansion joint in which pressure is balanced inside, the upper and lower end surfaces of the pressure-balanced expansion joint are used. Because the force acting on the powder line, that is, the pressure reaction force is not included in the load cell weighed weight,
Of the actual weight of the powder calculated from the weight of the load cell,
The error due to the large pressure reaction force is eliminated, and a significantly more accurate powder weight can be obtained as compared with the prior art. Further, by providing the pressure-balancing type expansion joint, it is possible to prevent such a large pressure reaction force from acting on a gantry serving as a support end on one side of each pressure-balancing type expansion joint. The gantry is prevented from being broken due to high stress caused by the reaction force.
【0020】請求項12記載の発明は、粉体容器内に収
容された微粉炭、チャー(燃焼残さ)等の粉体を前記粉体
容器の出口からの大径、小径2つの管路に接続される計
量用ホッパに導くとともに、前記粉体容器と計量用ホッ
パとの間に、前記大径、小径2つの管路に夫々連通され
る伸縮継手が上下に介装された支持用架台梁を設け、前
記計量用ホッパに設けられたロードセルにより該計量用
ホッパに導入される前記粉体の重量を計測するように構
成された粉体重量計測装置において、前記架台梁の上下
に設けられた前記伸縮継手を、該伸縮継手内部における
圧力が均衡されて該伸縮継手から前記架台梁側への圧力
反力の作用を阻止する圧力均衡型伸縮継手にて構成する
とともに、前記小径の管路を前記計量用ホッパに水平方
向に接続したことを特徴とする。According to a twelfth aspect of the present invention, powder such as pulverized coal or char (combustion residue) contained in a powder container is connected to two large-diameter and small-diameter pipes from the outlet of the powder container. And a supporting gantry between the powder container and the weighing hopper, in which expansion joints respectively connected to the two large-diameter and small-diameter pipes are vertically interposed. In the powder weight measuring device provided to measure the weight of the powder introduced into the weighing hopper by a load cell provided in the weighing hopper, the weighing hopper is provided above and below the gantry beam The expansion joint is constituted by a pressure-balanced expansion joint in which the pressure inside the expansion joint is balanced to prevent the action of a pressure reaction force from the expansion joint to the gantry beam side, and the small-diameter conduit is Horizontally connected to weighing hopper And it features.
【0021】かかる発明によれば、計量用ホッパの入口
側に設けられた大径及び小径管用圧力均衡型伸縮継手に
より計量用ホッパの軸方向における圧力反力及びばね反
力を抑制するとともに、前記計量用ホッパから外部に抜
き出される小径の抜出管路を水平方向に向けることによ
り、該小径の抜出管路によって軸方向に作用する力反力
及びばね反力を抑制できる。According to this invention, the pressure reaction force and the spring reaction force in the axial direction of the weighing hopper are suppressed by the large-diameter and small-diameter pipe pressure-balancing expansion joints provided on the inlet side of the weighing hopper. By directing the small-diameter extraction pipe drawn out of the weighing hopper to the outside in the horizontal direction, the force reaction force and the spring reaction force acting in the axial direction by the small-diameter extraction pipe can be suppressed.
【0022】[0022]
【発明の実施の形態】以下、本発明を図に示した実施例
を用いて詳細に説明する。但し、この実施例に記載され
ている構成部品の寸法、材質、形状、その相対配置など
は特に特定的な記載がない限り、この発明の範囲をそれ
のみに限定する趣旨ではなく、単なる説明例にすぎな
い。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to an embodiment shown in the drawings. However, unless otherwise specified, the dimensions, materials, shapes, relative arrangements, and the like of the components described in this embodiment are not intended to limit the scope of the present invention thereto, but are merely illustrative examples. It's just
【0023】図1は本発明の第1実施例に係る粉体重量
計測装置を示し、(A)は全体構成図、(B)は圧力均
衡型伸縮継手の構成図である。図2は第2実施例、図3
は第3実施例、図4は第4実施例、図5は第5実施例、
図6は第6実施例、図7は第7実施例、図8は第8実施
例、図9は第9実施例、図10は第10実施例、図11
は第11実施例、図12は第12実施例である。図13
は本発明に係る粉体重量計測装置を備えた石炭ガス化装
置の構成図である。FIG. 1 shows a powder weight measuring apparatus according to a first embodiment of the present invention, wherein (A) is an overall configuration diagram, and (B) is a configuration diagram of a pressure-balanced expansion joint. FIG. 2 shows a second embodiment, and FIG.
4 shows a third embodiment, FIG. 4 shows a fourth embodiment, FIG. 5 shows a fifth embodiment,
6 is a sixth embodiment, FIG. 7 is a seventh embodiment, FIG. 8 is an eighth embodiment, FIG. 9 is a ninth embodiment, FIG. 10 is a tenth embodiment, and FIG.
Shows an eleventh embodiment, and FIG. 12 shows a twelfth embodiment. FIG.
1 is a configuration diagram of a coal gasifier including a powder weight measuring device according to the present invention.
【0024】図1に示される第1実施例において、1は
被計測対象である前記粉体が収容されるビン、11は最
下部に設置されて粉体重量を計量するための計量用ホッ
パであり、該ビン1と計量用ホッパ11とを接続する鉛
直な粉体管路023には、該粉体の圧力を30kg/c
m2程度の高圧に加圧して溜めるロックホッパ7が設け
られている。In the first embodiment shown in FIG. 1, reference numeral 1 denotes a bin for accommodating the powder to be measured, and reference numeral 11 denotes a weighing hopper provided at the lowermost portion for measuring the weight of the powder. The pressure of the powder is set to 30 kg / c in a vertical powder line 023 connecting the bottle 1 and the weighing hopper 11.
lock hopper 7 for storing pressurized to m 2 about high pressure is provided.
【0025】前記粉体管路023の、前記ビン1の粉体
出口及びロックホッパ7の粉体出口には、該粉体管路0
23を開閉する粉体弁2、2が配設されている。また、
前記ビン1とロックホッパ7との間の粉体管路023に
は、支持用の架台梁5が介装され、各架台梁5の上下面
と前記粉体管路023との間には伸縮継手3が介装され
ている。さらに、前記伸縮継手3とロックホッパ7との
間の粉体管路023、及び該ロックホッパ7出口の粉体
弁2の下部側粉体管路023には、該粉体管路023を
流体密に閉止可能とする気密弁6、6が夫々設けられて
いる。4は前記粉体が溜められた計量用ホッパ11の重
量を計測するロードセルである。以上の構成は図14に
示される従来技術と同様である。The powder line 023 is connected to the powder outlet of the bottle 1 and the powder outlet of the lock hopper 7.
Powder valves 2 and 2 for opening and closing 23 are provided. Also,
A supporting gantry 5 is interposed in the powder pipeline 023 between the bin 1 and the lock hopper 7, and extends and contracts between the upper and lower surfaces of each gantry 5 and the powder pipeline 023. A joint 3 is interposed. Further, the powder pipeline 023 is connected to the powder pipeline 023 between the expansion joint 3 and the lock hopper 7 and the lower powder pipeline 023 of the powder valve 2 at the outlet of the lock hopper 7. Airtight valves 6, 6 that can be closed tightly are provided respectively. Reference numeral 4 denotes a load cell for measuring the weight of the weighing hopper 11 in which the powder is stored. The above configuration is the same as that of the prior art shown in FIG.
【0026】本発明においては、前記ロックホッパ7と
計量用ホッパ11との間に設けられた支持用の架台梁5
の上下面と前記粉体管路023との間に介装される伸縮
継手を改良している。即ち、図1において、10は圧力
均衡型伸縮継手で、前記ロックホッパ7出口側の前記気
密弁6と前記計量用ホッパ11との間に設けられた支持
用の架台梁5の上下面と前記粉体管路023との間に夫
々介装されている。該圧力均衡型伸縮継手10は、図1
(B)に示すように、大径部10bの両側に2つの小径
部10a、10aが結合されてなり、該大径部10bの
下端面と上部の小径部10aの上端面との間、及び大径
部10bの上端面と下部の小径部10aの上端面との間
にストッパ10c、10cが夫々介装されている。ま
た、前記大径部10bの断面積A2は、前記上部及び下
部の小径部10a及び10aの断面積A1の2倍、即ち
A2=2A1に構成されている。In the present invention, the supporting gantry 5 is provided between the lock hopper 7 and the weighing hopper 11.
The expansion joint interposed between the upper and lower surfaces of the above and the powder pipeline 023 is improved. That is, in FIG. 1, reference numeral 10 denotes a pressure-balancing type expansion joint, which is provided between the upper and lower surfaces of a supporting gantry 5 provided between the airtight valve 6 and the weighing hopper 11 on the lock hopper 7 outlet side. They are respectively interposed between the powder pipes 023. The pressure-balanced expansion joint 10 is shown in FIG.
As shown in (B), two small diameter portions 10a, 10a are joined to both sides of the large diameter portion 10b, between the lower end surface of the large diameter portion 10b and the upper end surface of the upper small diameter portion 10a, and Stoppers 10c and 10c are interposed between the upper end surface of the large diameter portion 10b and the upper end surface of the lower small diameter portion 10a, respectively. Further, the cross-sectional area A 2 of the large diameter portion 10b is twice the cross-sectional area A 1 of the upper and lower small-diameter portion 10a and 10a, that is, configured to A 2 = 2A 1.
【0027】かかる粉体重量計測装置により粉体の重量
を計測する際には、前記上部側の粉体弁2及び気密弁6
を開いて、ビン1内の粉体をロックホッパ7内に送った
後、上部側の気密弁6を閉じ(このとき、下部側の気密
弁6は閉じている)、前記ロックホッパ7内で該粉体の
圧力を30kg/cm2程度の高圧に加圧する。次い
で、ロックホッパ7出口の粉体弁2及び下部側の気密弁
6を開いてロックホッパ7内の高圧粉体を前記圧力均衡
型伸縮継手10の内部を経て前記計量用ホッパ11内に
送り、前記ロードセル4により該計量用ホッパ11の重
量を計測する。重量を計測された後の高圧粉体は該計量
用ホッパ11から抜き出されて、石炭ガス化炉に送られ
る。When the powder weight is measured by the powder weight measuring device, the powder valve 2 and the airtight valve 6 on the upper side are used.
Is opened, the powder in the bin 1 is sent into the lock hopper 7, and then the upper airtight valve 6 is closed (at this time, the lower airtight valve 6 is closed). The pressure of the powder is increased to a high pressure of about 30 kg / cm 2 . Next, the powder valve 2 at the outlet of the lock hopper 7 and the airtight valve 6 at the lower side are opened, and the high-pressure powder in the lock hopper 7 is sent into the weighing hopper 11 through the inside of the pressure-balanced expansion joint 10, The weight of the weighing hopper 11 is measured by the load cell 4. The high-pressure powder whose weight has been measured is extracted from the weighing hopper 11 and sent to a coal gasifier.
【0028】ここで、かかる粉体重量の計測時におい
て、前記ロックホッパ7と計量用ホッパ11との間の粉
体管路023及び伸縮継手3内には、30kg/cm2
程度に加圧された高圧粉体が通過するため、図14に示
されるような従来の粉体重量計測装置においては、伸縮
継手3(図14参照)内の内圧による圧力反力及び該伸
縮継手3のばね反力が前記ロードセル4により計量され
る。然るに、かかる実施例によれば、従来の伸縮継手3
(図14参照)に代えて、前記圧力均衡型伸縮継手10
を用いているため、次に示されるように、前記圧力反力
がバランスして、前記ロードセル計量重量に加わらな
い。At the time of measuring the powder weight, 30 kg / cm 2 is contained in the powder conduit 023 and the expansion joint 3 between the lock hopper 7 and the weighing hopper 11.
Since the high-pressure powder that has been pressed to a certain degree passes through the conventional powder weighing device as shown in FIG. 14, the pressure reaction force due to the internal pressure in the expansion joint 3 (see FIG. 14) and the expansion joint 3 is measured by the load cell 4. However, according to this embodiment, the conventional expansion joint 3
Instead of the pressure-balanced expansion joint 10 (see FIG. 14),
As described below, the pressure reaction force is balanced and does not add to the weight of the load cell as shown below.
【0029】即ち、前記圧力均衡型伸縮継手10におい
ては、前記計量用ホッパ11の内圧即ち前記圧力均衡型
伸縮継手10の内圧をP0とすると、前記のように圧力
均衡型伸縮継手10の大径部10bの断面積A2は、前
記上部及び下部の小径部10a及び10aの断面積A1
の2倍、即ちA2=2A1に構成されているため、前記
上部及び下部の小径部10a及び10aに掛かる上下方
向の力F11=P 0・A1 大径部10bに掛かる上下方向の力F12=P0・(A
2−A1)=P0・A 1 従って、F11=F12となり、前記圧力均衡型伸縮継
手10の上下端面10d、10dには該伸縮継手10内
の内圧P0による力即ち前記圧力反力F1は掛からな
い。That is, in the pressure balanced type expansion joint 10,
The internal pressure of the weighing hopper 11, ie, the pressure balanced type.
Set the internal pressure of the expansion joint 10 to P0Then, as described above, the pressure
Cross-sectional area A of large diameter portion 10b of balanced expansion joint 102Is before
The cross-sectional area A of the upper and lower small diameter portions 10a and 10a1
Twice, that is, A2= 2A1Is configured in the above,
Upper and lower sides of the upper and lower small diameter portions 10a and 10a
Direction force F11= P 0・ A1 The vertical force F applied to the large diameter portion 10b12= P0・ (A
2-A1) = P0・ A 1 Therefore, F11= F12And the pressure-balanced telescopic joint
The upper and lower end faces 10d and 10d of the hand 10 are in the expansion joint 10
Internal pressure P0The pressure reaction force F1I'm hanging
No.
【0030】よって、かかる実施例においては、前記計
量用ホッパ11に溜められた粉体の実重量Wは、前記の
ように、圧力反力F1=0となるため、次の(2)式で
算出される。先ず、ロードセル計量重量W1は、 W1=W2+W+F2 従って、粉体の実重量Wは、 W=W1−(W2+F2) (2) ここで、W2:計量用ホッパ11の重量 F2:伸縮継手3のばね反力(以下、ばね反力という)Therefore, in this embodiment, the total
The actual weight W of the powder stored in the quantity hopper 11 is
Thus, the pressure reaction force F1= 0, so in the following equation (2)
Is calculated. First, the load cell weight W1Is W1= W2+ W + F2 Therefore, the actual weight W of the powder is: W = W1− (W2+ F2(2) where W2: Weight of weighing hopper 11 F2: Spring reaction force of expansion joint 3 (hereinafter referred to as spring reaction force)
【0031】以上のように、かかる実施例によれば、高
圧粉体が通過するロックホッパ7出口側の伸縮継手を内
部で圧力バランスがなされる圧力均衡型伸縮継手10と
しているので、該圧力均衡型伸縮継手10の上下端面1
0d、10dから前記粉体管路023に掛かる力即ち前
記圧力反力F1は0(ゼロ)となり、従ってかかる大き
な圧力反力F1(前記のように、約10000kg以上
の荷重)がロードセル計量重量W1に含まれないことと
なるため、該ロードセル計量重量W1から算出される粉
体の実重量Wの前記大きな圧力反力F1による誤差が無
くなり、従来技術に比べて、大幅に高精度の粉体重量を
得ることができる。As described above, according to this embodiment, the expansion joint on the outlet side of the lock hopper 7 through which the high-pressure powder passes is the pressure-balanced expansion joint 10 in which the pressure is balanced inside. Upper and lower end surfaces 1 of the mold expansion joint 10
0d, force or the pressure reaction force F 1 applied from 10d to the powder conduit 023 0 (zero), and thus large pressure reaction force F 1 (as described above, about 10000kg or more load) take the load cell weighing since that would not be included in the weight W 1, eliminated errors the due to a large pressure reaction force F 1 of the actual weight W of the powder is calculated from the load cell weighing weight W 1, as compared with the prior art, considerably higher Accurate powder weight can be obtained.
【0032】また、かかる実施例によれば、前記圧力均
衡型伸縮継手10を設けることにより、前記のような大
きな圧力反力F1が該圧力均衡型伸縮継手10の一方側
の支持端となっている前記ロックホッパ7と計量用ホッ
パ11との間の架台梁5に作用するのが回避され、該架
台梁5における、前記圧力反力F1に起因する高応力に
よって破壊の発生が防止される。Further, according to the embodiment, by providing the pressure balanced type expansion joint 10, large pressure reaction force F 1 as described above is a support end of one side of the pressure balanced type expansion joint 10 and the lock hopper 7 has to act on the frame beam 5 between the metering hopper 11 is avoided, in the cross Taihari 5, occurrence of breaking by a high stress due to the pressure reaction force F 1 can be prevented You.
【0033】図2は本発明の第2実施例を示す。この実
施例においては、前記第1実施例(図1)においてロッ
クホッパ7出口側と前記圧力均衡型伸縮継手10との間
に設置していた下部側の気密弁6を圧力均衡型伸縮継手
10と計量用ホッパ11との間に移している。その他の
構成は、前記第1実施例と同様であり、これと同一の部
材は同一の符号で示す。FIG. 2 shows a second embodiment of the present invention. In this embodiment, the lower airtight valve 6 provided between the lock hopper 7 outlet side and the pressure balanced expansion joint 10 in the first embodiment (FIG. 1) is replaced with a pressure balanced expansion joint 10. And the weighing hopper 11. Other configurations are the same as those of the first embodiment, and the same members are denoted by the same reference numerals.
【0034】かかる第2実施例においては、前記圧力均
衡型伸縮継手10により、該圧力均衡型伸縮継手10か
ら計量用ホッパ11に、前記ロックホッパ7の圧力変動
を含む、前記伸縮継手10の内圧による力が掛からなく
なるため、前記下部側の気密弁6をロックホッパ7出口
側から離して計量用ホッパ11に設けることが可能とな
る。これにより、前記圧力均衡型伸縮継手10の常圧レ
ベルでの整備が可能となり、整備性が向上する。In the second embodiment, the internal pressure of the expansion joint 10 including the pressure fluctuation of the lock hopper 7 is changed from the pressure equalization expansion joint 10 to the weighing hopper 11 by the pressure equalizing expansion joint 10. Therefore, the lower airtight valve 6 can be provided on the weighing hopper 11 away from the lock hopper 7 outlet side. Thereby, the pressure balanced type expansion joint 10 can be maintained at a normal pressure level, and the maintainability is improved.
【0035】図3は本発明の第3実施例を示す。この実
施例においては、図1に示される第1実施例において、
前記圧力均衡型伸縮継手10に、該伸縮継手の長手方向
の変位を計測する変位計16を設けている。また、重量
計測用粉体として、サイクロン15からチャーを供給し
ている。そして、該変位計16により計測した圧力均衡
型伸縮継手10の変位xと、該圧力均衡型伸縮継手10
のばね定数Kとにより、前記ばね反力F2を F2=K・x (3) により算出する。その他の構成は、前記第1実施例と同
様であり、これと同一の部材は同一の符号で示す。FIG. 3 shows a third embodiment of the present invention. In this embodiment, in the first embodiment shown in FIG.
The pressure-balanced expansion joint 10 is provided with a displacement gauge 16 for measuring the displacement of the expansion joint in the longitudinal direction. Char is supplied from the cyclone 15 as powder for weight measurement. The displacement x of the pressure-balanced expansion joint 10 measured by the displacement meter 16 and the pressure-balanced expansion joint 10
The spring reaction force F 2 is calculated by the following equation: F 2 = K · x (3) Other configurations are the same as those of the first embodiment, and the same members are denoted by the same reference numerals.
【0036】チャー(燃焼残渣)からなる粉体の重量を
計測する際には、該チャーの温度が400℃程度と高い
ため、前記圧力均衡型伸縮継手10に熱伸びが生じ、該
熱伸びによるばね反力F2が大きくなる。このためかか
るチャーの重量を計測するにあたっては、前記ばね反力
F2を正確に検知することを要するが、前記第1、2実
施例においては該ばね反力F2を、推定を含む演算によ
って検知しており、かかるチャーの粉体重量計測時には
十分に高い計測精度が得られ難い。然るにかかる第3実
施例においては、変位計16により圧力均衡型伸縮継手
10の変位xを計測し、この計測値に基づき前記(3)
式にてばね反力F2を算出するので、該ばね反力F2を
正確に求めることができ、チャーのような高温粉体の重
量計測を高精度で行うことができる。When measuring the weight of the powder comprising the char (combustion residue), the temperature of the char is as high as about 400 ° C., so that the pressure-balanced expansion joint 10 undergoes thermal expansion, spring reaction F 2 increases. In measuring the weight of the for such char, the spring requires that the reaction force F 2 to accurately detect, but the spring reaction force F 2 in the first and second embodiments, the operation including estimating It is difficult to obtain sufficiently high measurement accuracy when measuring the powder weight of such a char. However, in the third embodiment, the displacement x of the pressure-balanced expansion joint 10 is measured by the displacement gauge 16, and the displacement (x) is determined based on the measured value.
Since calculating the spring reaction force F 2 by a formula, it is possible to determine the spring reaction force F 2 can be accurately perform weight measurement of the hot powder such as char at high accuracy.
【0037】図4は本発明の第4実施例を示す。この実
施例においては、図2に示される第2実施例つまり、下
部側の気密弁6を圧力均衡型伸縮継手10と計量用ホッ
パ11との間に移したものにおいて、前記圧力均衡型伸
縮継手10に、該伸縮継手10の長手方向の変位を計測
する変位計16を設けている。かかる実施例における作
用、効果は前記第3実施例と同様である。その他の構成
は、前記第3実施例と同様であり、これと同一の部材は
同一の符号で示す。FIG. 4 shows a fourth embodiment of the present invention. In this embodiment, in the second embodiment shown in FIG. 2, that is, in a case where the lower airtight valve 6 is moved between the pressure-balancing type expansion joint 10 and the weighing hopper 11, the pressure-balancing type expansion joint is 10 is provided with a displacement meter 16 for measuring the displacement of the expansion joint 10 in the longitudinal direction. The operation and effect of this embodiment are the same as those of the third embodiment. Other configurations are the same as those of the third embodiment, and the same members are denoted by the same reference numerals.
【0038】図5は本発明の第5実施例を示す。この実
施例においては、前記第1実施例に加えて、前記圧力均
衡型伸縮継手10の下部にひずみゲージを備えたロード
セル17を設け、該ロードセル17で前記圧力均衡型伸
縮継手10のばね反力F2を直接計測している。尚、チ
ャーの粉体重量を計測する際には、図5のビン1に代え
て、図3、4と同様なサイクロン15を用いる。その他
の構成は、前記第1実施例と同様であり、これと同一の
部材は同一の符号で示す。FIG. 5 shows a fifth embodiment of the present invention. In this embodiment, in addition to the first embodiment, a load cell 17 provided with a strain gauge is provided below the pressure-balanced expansion joint 10, and the spring reaction force of the pressure-balanced expansion joint 10 is provided by the load cell 17. measures the F 2 directly. When measuring the powder weight of the char, a cyclone 15 similar to that shown in FIGS. 3 and 4 is used instead of the bottle 1 shown in FIG. Other configurations are the same as those of the first embodiment, and the same members are denoted by the same reference numerals.
【0039】かかる第5実施例においては、ひずみゲー
ジを備えたロードセル17により圧力均衡型伸縮継手1
0のばね反力F2を直接計測しているので、前記第3、
4実施例よりも該ばね反力F2をさらに正確に求めるこ
とができ、チャーのような高温粉体の重量計測をさらな
る高精度で以って行うことができる。In the fifth embodiment, the pressure-balanced expansion joint 1 is provided by a load cell 17 having a strain gauge.
Since 0 of the spring reaction force F 2 is directly measured, the third,
4 more accurately it can be determined the spring reaction force F 2 than Example, it is possible to perform drives out weight measurement of high-temperature powder, such as char at further high accuracy.
【0040】図6は本発明の第6実施例を示す。この実
施例においては、図2に示される第2実施例つまり、下
部側の気密弁6を圧力均衡型伸縮継手10と計量用ホッ
パ11との間に移したものにおいて、前記圧力均衡型伸
縮継手10の下部にひずみゲージを備えたロードセル1
7を設け、該ロードセル17で前記圧力均衡型伸縮継手
10のばね反力F2を直接計測している。尚、チャーの
粉体重量を計測する際には、図6のビン1に代えて、図
3、4と同様なサイクロン15を用いる。かかる実施例
における作用、効果は前記第5実施例と同様である。そ
の他の構成は、前記第3実施例と同様であり、これと同
一の部材は同一の符号で示す。FIG. 6 shows a sixth embodiment of the present invention. In this embodiment, in the second embodiment shown in FIG. 2, that is, in a case where the lower airtight valve 6 is moved between the pressure-balancing type expansion joint 10 and the weighing hopper 11, the pressure-balancing type expansion joint is Load cell 1 with a strain gauge below 10
7 is provided, which measures the spring reaction force F 2 of the pressure balanced type expansion joint 10 at the load cell 17 directly. In measuring the powder weight of the char, a cyclone 15 similar to that shown in FIGS. 3 and 4 is used instead of the bottle 1 shown in FIG. The operation and effect of this embodiment are the same as those of the fifth embodiment. Other configurations are the same as those of the third embodiment, and the same members are denoted by the same reference numerals.
【0041】図7は本発明の第7実施例を示す。この実
施例においては、計量用ホッパ11を複数個並列に設置
し、上方に設置したビン1から上部の架台梁5を貫通し
て各計量用ホッパ11に接続される複数の粉体管路23
を設け、各粉体管路23の途中に、前記圧力均衡型伸縮
継手10を夫々介装して架台梁5の上下面にて支持して
いる。2は前記ビン1の粉体出口を開閉する粉体弁、6
は前記圧力均衡型伸縮継手10と計量用ホッパ11との
間に設けられて、両者間の粉体管路23を開閉する気密
弁、4は前記計量用ホッパ11の重量を計測するロード
セルである。FIG. 7 shows a seventh embodiment of the present invention. In this embodiment, a plurality of weighing hoppers 11 are installed in parallel, and a plurality of powder pipelines 23 connected to each weighing hopper 11 through the upper gantry 5 from the bin 1 installed above.
The pressure-balancing type expansion joint 10 is interposed in the middle of each of the powder pipes 23 and supported on the upper and lower surfaces of the gantry 5. 2 is a powder valve for opening and closing the powder outlet of the bottle 1;
Is an airtight valve provided between the pressure-balancing type expansion joint 10 and the weighing hopper 11 to open and close the powder conduit 23 therebetween, and 4 is a load cell for measuring the weight of the weighing hopper 11. .
【0042】かかる第7実施例においては、前記複数個
の計量用ホッパ11の1つ(2つ以上でもよい)につい
て、粉体弁2及び気密弁6を開いて前記ビン1から粉体
管路23及び圧力均衡型伸縮継手10を経て粉体を導入
して粉体重量計測を行い、他の1つ(2つ以上でもよ
い)には粉体弁2及び気密弁6を閉じることにより粉体
の供給を遮断して常圧の状態にて待機させ、前記計測を
行っている計量用ホッパ11の受領が減少したとき、前
記待機中の計量用ホッパ11を切り換え使用する。In the seventh embodiment, with respect to one (or more than two) of the plurality of weighing hoppers 11, the powder valve 2 and the airtight valve 6 are opened and the The powder is introduced through the expansion joint 23 and the pressure-balancing type expansion joint 10 to measure the weight of the powder, and the other one (or two or more) is closed by closing the powder valve 2 and the airtight valve 6. When the reception of the weighing hopper 11 performing the measurement decreases, the weighing hopper 11 in the standby state is switched to be used.
【0043】かかる実施例においても、前記第1ないし
第7実施例と同様に、各計量用ホッパ11入口側の伸縮
継手を、内部で圧力バランスがなされる圧力均衡型伸縮
継手10としているので、該圧力均衡型伸縮継手10の
上下端面から前記粉体管路23に掛かる力即ち前記圧力
反力F1がロードセル計量重量W1に含まれないことと
なるため、該ロードセル計量重量から算出される粉体の
実重量の、前記大きな圧力反力F1による誤差が無くな
り、従来技術に比べて大幅に高精度の粉体重量を得るこ
とができる。In this embodiment as well, as in the first to seventh embodiments, the expansion joint on the inlet side of each weighing hopper 11 is a pressure-balanced expansion joint 10 in which pressure is balanced inside. a force that is, the pressure reaction force F 1 from the upper and lower end surfaces acting on the powder conduit 23 of the pressure balance type expansion joint 10 is not included in the load cell weighing weight W 1, is calculated from the load cell weighing weight the actual weight of the powder, the eliminated error due to a large pressure reaction force F 1, it is possible to obtain a powder weight of significantly high accuracy compared to the prior art.
【0044】また、前記圧力均衡型伸縮継手10を設け
ることにより、前記のような大きな圧力反力F1が各圧
力均衡型伸縮継手10の一方側の支持端となっている架
台梁5に作用するのが回避され、前記圧力反力F1に起
因する高応力による該架台梁5の破壊の発生が防止され
る。[0044] Further, by providing the pressure balanced type expansion joint 10, acting in a supporting end of one side frame beams 5 of the large pressure reaction force F 1 is the pressure balanced type expansion joint 10, such as the It is avoided for the occurrence of the destruction of the cross Taihari 5 by high stresses due to the pressure reaction force F 1 can be prevented.
【0045】図8は本発明の第8実施例を示す。この実
施例においては、前記第7実施例における架台梁5の上
面側の伸縮継手を、次のように構成している。即ち、前
記架台梁5の上面側の伸縮継手は、同径のベローズ24
a、24aを導通管24cで連通させるとともに該ベロ
ーズ24a、24aの両端面間にストッパ24bを介装
し、さらに前記導通管24cの途中に前記粉体管路23
を接続してなる圧力均衡型伸縮継手24に構成されてい
る。かかる圧力均衡型伸縮継手24は、同径のベローズ
24a、24aの内圧により互いに逆方向でかつ同一の
圧力反力を該ベローズ24a、24aの両端面に作用さ
せ、該両端面をストッパ24bにて拘束しているので、
内部圧力による力がバランスし、前記第1ないし第8実
施例における圧力均衡型伸縮継手10と同様に圧力反力
を0(ゼロ)とすることができる。FIG. 8 shows an eighth embodiment of the present invention. In this embodiment, the expansion joint on the upper surface side of the gantry 5 in the seventh embodiment is configured as follows. That is, the expansion joint on the upper surface side of the gantry 5 is a bellows 24 having the same diameter.
a and 24a are communicated with each other by a conduit 24c, a stopper 24b is interposed between both end surfaces of the bellows 24a and 24a, and the powder conduit 23 is provided in the middle of the conduit 24c.
Are connected to each other to form a pressure-balanced expansion joint 24. The pressure-balanced expansion joint 24 applies opposite pressures and the same pressure reaction to both end surfaces of the bellows 24a, 24a by the internal pressures of the bellows 24a, 24a having the same diameter. Because it is restrained,
The force due to the internal pressure is balanced, and the pressure reaction force can be set to 0 (zero) as in the pressure balanced expansion joint 10 in the first to eighth embodiments.
【0046】図9は本発明の第9実施例を示す。この実
施例においては、前記第7実施例における前記各圧力均
衡型伸縮継手10に、前記第3ないし第4実施例と同様
な該伸縮継手10の長手方向の変位を計測する変位計1
6を設けている。その他の構成は、前記第7実施例と同
様であり、これと同一の部材は同一の符号で示す。かか
る実施例においても、前記第3ないし第4実施例と同様
な変位計16により圧力均衡型伸縮継手10の変位xを
計測し、この計測値に基づきばね反力F2を算出するの
で、該伸縮継手10のばね反力F2を正確に求めること
ができ、チャーのような高温粉体の重量計測を高精度で
行うことができる。FIG. 9 shows a ninth embodiment of the present invention. In this embodiment, each of the pressure-balancing type expansion joints 10 in the seventh embodiment is provided with a displacement meter 1 for measuring the longitudinal displacement of the expansion joint 10 similar to the third or fourth embodiment.
6 are provided. Other configurations are the same as those of the seventh embodiment, and the same members are denoted by the same reference numerals. Also in such an embodiment, by measuring the displacement x of the pressure balanced type expansion joint 10 by the third to fourth embodiments and similar displacement gauge 16, since the calculated spring reaction force F 2 on the basis of this measured value, the expansion joint 10 spring reaction force F 2 to can be accurately determined, it is possible to perform weight measurement of the hot powder such as char at high accuracy.
【0047】図10は本発明の第10実施例を示す。こ
の実施例においては、前記第7実施例における前記各圧
力均衡型伸縮継手10の下部に、前記第5ないし第6実
施例と同様に、ひずみゲージを備えたロードセル17を
設け、該ロードセル17で前記各圧力均衡型伸縮継手1
0のばね反力F2を直接計測している。その他の構成
は、前記第7実施例と同様であり、これと同一の部材は
同一の符号で示す。FIG. 10 shows a tenth embodiment of the present invention. In this embodiment, a load cell 17 having a strain gauge is provided below the pressure-balanced expansion joint 10 in the seventh embodiment, similarly to the fifth to sixth embodiments. Each of the pressure balanced type expansion joints 1
0 of the spring reaction force F 2 is directly measured. Other configurations are the same as those of the seventh embodiment, and the same members are denoted by the same reference numerals.
【0048】かかる実施例においては、前記第5ないし
第6実施例と同様に、ひずみゲージを備えたロードセル
17により圧力均衡型伸縮継手10のばね反力F2を直
接計測しているので、前記第3、4実施例よりも該ばね
反力F2をさらに正確に求めることができ、チャーのよ
うな高温粉体の重量計測をさらなる高精度で以って行う
ことができる。[0048] In such embodiment, similarly to the fifth to the sixth embodiment, since the measuring spring reaction force F 2 of the pressure balanced type expansion joint 10 directly by the load cell 17 having strain gauges, the than third and fourth embodiment more precisely it can be determined the spring reaction force F 2, it is possible to perform drives out weight measurement of high-temperature powder, such as char at further high accuracy.
【0049】図11は本発明の第11実施例を示す。こ
の実施例においては、計量用ホッパ11の入口側に、前
記第1実施例における粉体管路023と同様な重量計測
用粉体を供給する大径管25aに加えて、これよりも小
径の小径管25bを接続し、該大径管25a及び小径管
25bの夫々に、前記第1実施例と同様な圧力均衡型伸
縮継手、即ち大径圧力均衡型伸縮継手010a及び小径
圧力均衡型伸縮継手010bを夫々介装し、該大径圧力
均衡型伸縮継手010a及び小径圧力均衡型伸縮継手0
10bと前記計量用ホッパ11との間に気密弁6a及び
6bを設け、さらに、前記計量用ホッパ11から外部に
抜き出される小径抜出管26は水平方向に向くように構
成されている。24は前記各小径抜出管26に設けられ
たフレキシブル継手である。FIG. 11 shows an eleventh embodiment of the present invention. In this embodiment, a large-diameter pipe 25a for supplying powder for weight measurement similar to the powder pipe 023 in the first embodiment is provided at the inlet side of the weighing hopper 11; The small-diameter pipe 25b is connected, and the large-diameter pipe 25a and the small-diameter pipe 25b are respectively connected to the pressure-balanced expansion joint similar to the first embodiment, that is, the large-diameter pressure-balanced expansion joint 010a and the small-diameter pressure-balanced expansion joint. 010b and the large diameter pressure balanced type expansion joint 010a and the small diameter pressure balanced type expansion joint 0
Airtight valves 6a and 6b are provided between 10b and the weighing hopper 11, and a small-diameter extraction pipe 26 that is drawn out of the weighing hopper 11 to the outside is configured to be oriented in the horizontal direction. Reference numeral 24 denotes a flexible joint provided on each of the small-diameter extraction pipes 26.
【0050】かかる第11実施例においては、前記計量
用ホッパ11の入口側に設けられた前記大径圧力均衡型
伸縮継手010a及び小径圧力均衡型伸縮継手010b
により計量用ホッパ11の軸方向における圧力反力及び
ばね反力を抑制するとともに、前記計量用ホッパ11か
ら外部に抜き出される小径抜出管26を水平方向に向け
ることにより、該小径抜出管26によって軸方向に作用
する力反力及びばね反力を抑制できる。In the eleventh embodiment, the large-diameter pressure-balanced expansion joint 010a and the small-diameter pressure-balanced expansion joint 010b provided on the inlet side of the weighing hopper 11 are described.
By suppressing the pressure reaction force and the spring reaction force of the weighing hopper 11 in the axial direction, the small-diameter discharge pipe 26 drawn out of the weighing hopper 11 is directed in the horizontal direction. The force reaction force and the spring reaction force acting in the axial direction can be suppressed by 26.
【0051】図12は本発明の第12実施例を示す。こ
の実施例においては、前記第11実施例における気密弁
6a及び6bを前記大径圧力均衡型伸縮継手010a及
び小径圧力均衡型伸縮継手010bの入口側に設けてい
る。この実施例における作用効果は前記第11実施例と
同様である。その他の構成は、前記第11実施例と同様
であり、これと同一の部材は同一の符号で示す。FIG. 12 shows a twelfth embodiment of the present invention. In this embodiment, the airtight valves 6a and 6b in the eleventh embodiment are provided on the inlet side of the large-diameter pressure-balanced expansion joint 010a and the small-diameter pressure-balanced expansion joint 010b. The operation and effect of this embodiment are the same as those of the eleventh embodiment. Other configurations are the same as those of the eleventh embodiment, and the same members are denoted by the same reference numerals.
【0052】図13は前記第1実施例と同様な微粉炭用
の粉体重量計測装置201と、前記第3実施例と同様な
チャー用の粉体重量計測装置202とを石炭のガス化炉
100に接続して、該ガス化炉100に供給される微粉
炭及びチャーの粉体重量を並行して計測可能としたもの
である。図において、101はチャー用のフィルタ、1
02は微粉炭供給管、103はチャー供給管、104及
び105はチャー管である。その他の部材は、前記第
1、第3実施例と同一の符号で示す。FIG. 13 shows a powder weighing apparatus 201 for pulverized coal similar to that of the first embodiment and a powder weighing apparatus 202 for char similar to that of the third embodiment. 100, the powder weights of the pulverized coal and char supplied to the gasification furnace 100 can be measured in parallel. In the figure, 101 is a filter for char, 1
02 is a pulverized coal supply pipe, 103 is a char supply pipe, and 104 and 105 are char pipes. Other members are denoted by the same reference numerals as in the first and third embodiments.
【0053】[0053]
【発明の効果】以上記載のごとく本発明によれば、高圧
粉体が通過する伸縮継手を、内部で圧力バランスがなさ
れる圧力均衡型伸縮継手としているので、該圧力均衡型
伸縮継手の上下端面から粉体管路に掛かる力即ち前記圧
力反力が抑制され、従ってかかる大きな圧力反力がロー
ドセル計量重量に含まれないこととなるため、該ロード
セル計量重量から算出される粉体の実重量の圧力反力に
よる計測誤差が無くなり、従来技術に比べて、粉体重量
の計測精度を大幅に向上できる。As described above, according to the present invention, since the expansion joint through which the high-pressure powder passes is a pressure-balanced expansion joint in which pressure is balanced inside, the upper and lower end surfaces of the pressure-balanced expansion joint are provided. Therefore, the force acting on the powder pipeline, that is, the pressure reaction force is suppressed, and the large pressure reaction force is not included in the load cell weighed weight. The measurement error due to the pressure reaction force is eliminated, and the measurement accuracy of the powder weight can be greatly improved as compared with the related art.
【0054】また、本発明によれば、前記圧力均衡型伸
縮継手を設けることにより、前記のような大きな圧力反
力が圧力均衡型伸縮継手の一方側の支持端となっている
前記ロックホッパと計量用ホッパとの間の支持用架台梁
に作用するのが回避され、該架台梁の、前記圧力反力に
起因する高応力による破壊の発生を防止することができ
る。Further, according to the present invention, by providing the pressure-balancing type expansion joint, the above-mentioned lock hopper, which has a large pressure reaction force as a support end on one side of the pressure-balancing type expansion joint, is provided. Acting on the supporting gantry between the weighing hopper and the weighing hopper can be avoided, and the gantry can be prevented from being broken due to high stress caused by the pressure reaction force.
【0055】また請求項5及び10のように構成すれ
ば、変位検出器により圧力均衡型伸縮継手の変位を計測
し、この計測値に基づきばね反力を算出するので、該ば
ね反力を正確に求めることができ、チャーのような高温
粉体の重量計測を高精度で行うことができる。さらに請
求項6及び11のように構成すれば、ひずみゲージを備
えた反力計測用ロードセルにより圧力均衡型伸縮継手の
ばね反力を直接計測しているので、前記請求項5及び1
0のものよりも該ばね反力をさらに正確に求めることが
でき、チャーのような高温粉体の重量計測をさらなる高
精度で以って行うことができる。According to the fifth and tenth aspects, the displacement of the pressure-balanced expansion joint is measured by the displacement detector, and the spring reaction force is calculated based on the measured value. And the weight of a high-temperature powder such as char can be measured with high accuracy. Further, according to the sixth and eleventh aspects, the spring reaction force of the pressure-balancing type expansion joint is directly measured by the reaction force measurement load cell provided with the strain gauge.
The spring reaction force can be obtained more accurately than that of the case of zero, and the weight measurement of a high-temperature powder such as char can be performed with higher precision.
【0056】以上、要するに本発明によれば、高圧粉体
が通過する伸縮継手内の圧力反力による粉体重量の計量
誤差が抑制されて粉体重量の計測精度が大幅に向上でき
るとともに、該圧力反力による架台梁の作用荷重が低減
されて、該架台梁の高応力による破壊の発生が防止され
た粉体重量計測装置を提供することができる。In summary, according to the present invention, the measurement error of the powder weight due to the pressure reaction force in the expansion joint through which the high-pressure powder passes can be suppressed, and the measurement accuracy of the powder weight can be greatly improved. It is possible to provide a powder weight measuring device in which the acting load of the gantry due to the pressure reaction force is reduced, and the gantry is prevented from breaking due to high stress.
【図1】 本発明の第1実施例に係る粉体重量計測装置
を示し、(A)は全体構成図、(B)は圧力均衡型伸縮
継手の構成図である。FIG. 1 shows a powder weight measuring device according to a first embodiment of the present invention, in which (A) is an overall configuration diagram and (B) is a configuration diagram of a pressure-balanced expansion joint.
【図2】 第2実施例を示す図1対応図である。FIG. 2 is a view corresponding to FIG. 1 showing a second embodiment.
【図3】 第3実施例を示す図1対応図である。FIG. 3 is a view corresponding to FIG. 1 showing a third embodiment.
【図4】 第4実施例を示す図1対応図である。FIG. 4 is a view corresponding to FIG. 1 showing a fourth embodiment.
【図5】 第5実施例を示す図1対応図である。FIG. 5 is a view corresponding to FIG. 1, showing a fifth embodiment.
【図6】 第6実施例を示す図1対応図である。FIG. 6 is a view corresponding to FIG. 1 showing a sixth embodiment.
【図7】 第7実施例を示す図1対応図である。FIG. 7 is a view corresponding to FIG. 1, showing a seventh embodiment.
【図8】 第8実施例を示す図1対応図である。FIG. 8 is a view corresponding to FIG. 1, showing an eighth embodiment.
【図9】 第9実施例を示す図1対応図である。FIG. 9 is a view corresponding to FIG. 1, showing a ninth embodiment.
【図10】 第10実施例を示す図1対応図である。FIG. 10 is a view corresponding to FIG. 1, showing a tenth embodiment.
【図11】 第11実施例を示す図1対応図である。FIG. 11 is a view corresponding to FIG. 1, showing an eleventh embodiment.
【図12】 第12実施例を示す図1対応図である。FIG. 12 is a view corresponding to FIG. 1, showing a twelfth embodiment.
【図13】 本発明に係る粉体重量計測装置を備えた石
炭ガス化装置の構成図である。FIG. 13 is a configuration diagram of a coal gasifier including a powder weight measuring device according to the present invention.
【図14】 粉体重量計測装置の従来技術の第1例を示
す図1対応図である。FIG. 14 is a view corresponding to FIG. 1 showing a first example of a conventional technique of a powder weight measuring device.
【図15】 粉体重量計測装置の従来技術の第2例を示
す図1対応図である。FIG. 15 is a view corresponding to FIG. 1 showing a second example of the prior art of the powder weight measuring device.
【図16】 粉体重量計測装置における、伸縮継手の口
径と前記圧力反力との関係を示す線図である。FIG. 16 is a diagram showing a relationship between the diameter of an expansion joint and the pressure reaction force in the powder weight measuring device.
【図17】 粉体重量計測装置における伸縮継手の変位
と前記ばね反力との関係を示す線図である。FIG. 17 is a diagram showing the relationship between the displacement of an expansion joint and the spring reaction force in the powder weight measuring device.
1 ビン 2 粉体弁 3 伸縮継手 4 ロードセル 5 架台梁 6 気密弁 7 ロックホッパ 10 圧力均衡型伸縮継手 10a 小径部 10b 大径部 10c ストッパ 010a 大径圧力均衡型伸縮継手 010b 小径圧力均衡型伸縮継手 11 計量用ホッパ 15 サイクロン 16 変位計 17 ロードセル 23、023 粉体管路 26 小径抜出管 100 ガス化炉 DESCRIPTION OF SYMBOLS 1 bin 2 powder valve 3 expansion joint 4 load cell 5 gantry 6 airtight valve 7 lock hopper 10 pressure balanced expansion joint 10a small diameter section 10b large diameter section 10c stopper 010a large diameter pressure balanced expansion joint 010b small diameter pressure balanced expansion joint DESCRIPTION OF SYMBOLS 11 Measuring hopper 15 Cyclone 16 Displacement meter 17 Load cell 23,023 Powder pipeline 26 Small diameter extraction pipe 100 Gasifier
Claims (12)
(燃焼残渣)等の粉体を前記粉体容器の出口からの管路に
接続されるロックホッパにて昇圧し、該ロックホッパの
出口管路を開閉する粉体弁を経て該粉体弁の下方に配設
された計量用ホッパに導くとともに、該粉体弁と計量用
ホッパとの間に、前記ロックホッパに連通される伸縮継
手が上下に介装された支持用架台梁を設け、前記計量用
ホッパに設けられたロードセルにより該計量用ホッパに
導入される前記粉体の重量を計測するように構成された
粉体重量計測装置において、前記架台梁の上下に設けら
れた前記伸縮継手を、該伸縮継手内部における圧力が均
衡されて該伸縮継手から前記架台梁側への圧力反力の作
用を阻止する圧力均衡型伸縮継手にて構成したことを特
徴とする粉体重量計測装置。1. A pulverized coal and a char stored in a powder container
The pressure of the powder such as (combustion residue) is increased by a lock hopper connected to a pipe from the outlet of the powder container, and the powder valve passes through a powder valve that opens and closes an outlet pipe of the lock hopper. Guide to a weighing hopper disposed below, and a supporting gantry provided with an expansion joint vertically communicated with the lock hopper between the powder valve and the weighing hopper, In a powder weight measuring device configured to measure the weight of the powder introduced into the weighing hopper by a load cell provided in the weighing hopper, the expansion joints provided above and below the gantry beam are provided. And a pressure-balanced expansion joint that balances the pressure inside the expansion joint and prevents the action of a pressure reaction force from the expansion joint on the gantry side.
と計量用ホッパとの間に前記架台梁を挿んで2個直列に
介装したことを特徴とする請求項1記載の粉体重量計測
装置。2. The powder according to claim 1, wherein two of the pressure-balancing expansion joints are interposed in series with the gantry inserted between the powder valve and the weighing hopper. Weight measuring device.
の粉体通路に、該粉体通路を流体密に閉止可能とする気
密弁を介装したことを特徴とする請求項1記載の粉体重
量計測装置。3. An airtight valve for closing the powder passage in a fluid-tight manner is provided in the powder passage between the powder valve and the pressure-balancing expansion joint. The powder weight measuring device according to the above.
との間に、粉体通路を流体密に閉止可能とする気密弁を
介装したことを特徴とする請求項1記載の粉体重量計測
装置。4. The powder weight according to claim 1, wherein an airtight valve is provided between the pressure-balancing expansion joint and the weighing hopper so that the powder passage can be closed in a fluid-tight manner. Measuring device.
型伸縮継手の両端間の変位を計測して該圧力均衡型伸縮
継手に作用するばね反力を検出する変位検出器を設けた
ことを特徴とする請求項1記載の粉体重量計測装置。5. A displacement detector for measuring a displacement between both ends of the pressure-balanced expansion joint and detecting a spring reaction force acting on the pressure-balanced expansion joint, wherein the pressure-balanced expansion joint is provided. The powder weight measuring device according to claim 1, wherein:
量用ホッパとの間に、該圧力均衡型伸縮継手から下方に
作用する反力を計測する反力計測用ロードセルを直列に
配置したことを特徴とする請求項1記載の粉体重量計測
装置。6. A reaction force measurement load cell for measuring a reaction force acting downward from the pressure-balanced expansion joint between the lower part of the pressure-balanced expansion joint and the weighing hopper. The powder weight measuring device according to claim 1, wherein:
(燃焼残さ)等の粉体を、前記粉体容器の出口通路を開閉
する粉体弁を経て該粉体弁の下方に並列に複数個配設さ
れた計量用ホッパに複数の管路を介して導くとともに、
前記粉体弁と各計量用ホッパとの間に、前記各管路に連
通される伸縮継手が上下に介装された支持用の架台梁を
設け、前記複数個の計量用ホッパの一部を使用し他を待
機させて、前記各計量用ホッパに設けられたロードセル
により該計量用ホッパに導入される前記粉体の重量を計
測するように構成された粉体重量計測装置において、前
記架台梁の上下に複数個設けられた前記伸縮継手の夫々
を、該伸縮継手内部における圧力が均衡されて該伸縮継
手から前記架台梁側への圧力反力の作用を阻止する圧力
均衡型伸縮継手にて構成したことを特徴とする粉体重量
計測装置。7. Pulverized coal and char stored in a powder container
Powder such as (combustion residue) is passed through a plurality of pipes to a plurality of measuring hoppers arranged in parallel below the powder valve via a powder valve for opening and closing the outlet passage of the powder container. Guide and
Between the powder valve and each of the weighing hoppers, a supporting gantry beam in which an expansion joint communicated with each of the pipelines is vertically interposed is provided, and a part of the plurality of weighing hoppers is provided. In a powder weight measuring device configured to use and wait for others and measure the weight of the powder introduced into the weighing hoppers by a load cell provided in each of the weighing hoppers, Each of the plurality of expansion joints provided above and below the expansion joint is a pressure-balanced expansion joint that balances the pressure inside the expansion joint and prevents the action of a pressure reaction force from the expansion joint to the gantry beam side. A powder weight measuring device characterized by comprising.
と各計量用ホッパとの間に前記架台梁を挿んで夫々2個
直列に介装したことを特徴とする請求項7記載の粉体重
量計測装置。8. The pressure equalizing type expansion joint according to claim 7, wherein two of said mounting beams are inserted in series between said powder valve and each of said weighing hoppers. Powder weight measuring device.
ッパとの間の粉体通路に、該粉体通路を流体密に閉止可
能とする気密弁を夫々介装したことを特徴とする請求項
7記載の粉体重量計測装置。9. An airtight valve for closing the powder passage in a fluid-tight manner is interposed in the powder passage between each of the pressure-balancing type expansion joints and each of the weighing hoppers. The powder weight measuring device according to claim 7.
均衡型伸縮継手の両端間の変位を計測して該圧力均衡型
伸縮継手に作用するばね反力を検出する変位検出器を夫
々設けたことを特徴とする請求項7記載の粉体重量計測
装置。10. Each of the pressure-balanced expansion joints is provided with a displacement detector for measuring a displacement between both ends of the pressure-balanced expansion joint and detecting a spring reaction force acting on the pressure-balanced expansion joint. The powder weight measuring device according to claim 7, wherein:
記各計量用ホッパとの間に、該圧力均衡型伸縮継手から
下方に作用する反力を計測する反力計測用ロードセルを
夫々直列に配置したことを特徴とする請求項7記載の粉
体重量計測装置。11. A reaction force measurement load cell for measuring a reaction force acting downward from the pressure balanced type expansion joint between the lower part of each pressure balanced expansion joint and each weighing hopper, respectively. The powder weight measuring device according to claim 7, wherein the powder weight measuring device is arranged.
ー(燃焼残さ)等の粉体を前記粉体容器の出口からの大
径、小径2つの管路に接続される計量用ホッパに導くと
ともに、前記粉体容器と計量用ホッパとの間に、前記大
径、小径2つの管路に夫々連通される伸縮継手が上下に
介装された支持用架台梁を設け、前記計量用ホッパに設
けられたロードセルにより該計量用ホッパに導入される
前記粉体の重量を計測するように構成された粉体重量計
測装置において、前記架台梁の上下に設けられた前記伸
縮継手を、該伸縮継手内部における圧力が均衡されて該
伸縮継手から前記架台梁側への圧力反力の作用を阻止す
る圧力均衡型伸縮継手にて構成するとともに、前記小径
の管路を前記計量用ホッパに水平方向に接続したことを
特徴とする粉体重量計測装置。12. Powder such as pulverized coal and char (combustion residue) stored in a powder container is transferred to a weighing hopper connected to two large-diameter and small-diameter pipes from an outlet of the powder container. A supporting gantry between the powder container and the weighing hopper, the supporting gantry being provided with upper and lower expansion joints communicating with the two large-diameter and small-diameter pipes, respectively. In a powder weight measuring device configured to measure the weight of the powder introduced into the weighing hopper by a load cell provided in the weighing hopper, the expansion joints provided above and below the gantry beam are expanded and contracted. A pressure-balanced expansion joint that balances the pressure inside the joint and prevents the action of a pressure reaction force from the expansion joint to the gantry beam side, and the small-diameter pipe is horizontally connected to the weighing hopper. Powder weighing machine characterized by being connected to Apparatus.
Priority Applications (1)
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JP2000197150A JP2002013973A (en) | 2000-06-29 | 2000-06-29 | Powder weighting device |
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JP2000197150A JP2002013973A (en) | 2000-06-29 | 2000-06-29 | Powder weighting device |
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JP2002013973A true JP2002013973A (en) | 2002-01-18 |
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ID=18695521
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JP2000197150A Pending JP2002013973A (en) | 2000-06-29 | 2000-06-29 | Powder weighting device |
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Cited By (6)
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JP2007030908A (en) * | 2005-07-25 | 2007-02-08 | Nippo Mecx Kk | Silo for conserving liquid mixture |
ES2304885A1 (en) * | 2007-04-12 | 2008-10-16 | Payper, S.A. | Weighing machine (Machine-translation by Google Translate, not legally binding) |
CN101968373A (en) * | 2010-09-15 | 2011-02-09 | 三一重工股份有限公司 | Negative pressure monitoring system and negative pressure monitoring method for powder measurement |
JP2012247395A (en) * | 2011-05-31 | 2012-12-13 | Nippon Steel Engineering Co Ltd | Measuring apparatus for powder supply |
KR101543959B1 (en) | 2014-04-10 | 2015-08-12 | 주식회사 포스코 | Hopper and lock hopper system having same |
US9388349B2 (en) | 2011-08-15 | 2016-07-12 | Mitsubishi Heavy Industries, Ltd. | Char recovery system and char feeding hopper |
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