JPH10246399A - Pressure loss reducing device in pipe conveyance of sludge cake - Google Patents
Pressure loss reducing device in pipe conveyance of sludge cakeInfo
- Publication number
- JPH10246399A JPH10246399A JP6722497A JP6722497A JPH10246399A JP H10246399 A JPH10246399 A JP H10246399A JP 6722497 A JP6722497 A JP 6722497A JP 6722497 A JP6722497 A JP 6722497A JP H10246399 A JPH10246399 A JP H10246399A
- Authority
- JP
- Japan
- Prior art keywords
- pipe
- sludge cake
- gradually
- whose diameter
- under pressure
- 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
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Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、汚泥ケーキ等の高粘性
物質を配管により搬送するにあたり、配管の内周壁と搬
送物質との間の摩擦抵抗を軽減させるようにした圧力損
失低減装置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pressure loss reducing device for reducing the frictional resistance between an inner peripheral wall of a pipe and a transported substance when a highly viscous substance such as a sludge cake is transported by the pipe. It is.
【０００２】[0002]
【従来の技術】汚泥ケーキ等の高粘性物質をパイプライ
ンによって搬送することは従来行われている。この搬送
方式は、シンプルでトラブルが少ないことや、輸送量に
比べて輸送路に要する面積が少なくてすむなどの利点を
有しているが、搬送物である汚泥ケーキ等は流動性が少
なく、配管との摩擦抵抗が非常に大きいため、長距離を
搬送するには圧力損失が大きくなることから、高圧の搬
送装置を必要とする。2. Description of the Related Art Conventionally, high-viscosity substances such as sludge cakes are transported by pipelines. This transport method has advantages such as being simple and having few troubles, and requiring less area for the transport path as compared to the transport amount, but the sludge cake and the like that are transported have less fluidity, Since the frictional resistance with the pipe is very large, the pressure loss becomes large when transporting over a long distance, so a high-pressure transport device is required.
【０００３】そこで、配管の内周壁と搬送物との間に水
などの滑剤を注入し、配管との摩擦抵抗を少なくして、
搬送するようにしており、従来は、例えば図７に示すよ
うに、パイプラインの所要距離ごとに、配管１に環状に
若干の凹み部分12を設け、その部分12に滑剤の注入管８
を接続し、搬送中の物質の周囲に滑剤を注入、湿潤させ
るようにしている。或は図８に示すように、配管１に拡
径部13を設けてそこに注入管８を接続し滑剤を注入する
ことが多く行われている。[0003] Therefore, a lubricant such as water is injected between the inner peripheral wall of the pipe and the conveyed material to reduce frictional resistance with the pipe,
Conventionally, as shown in FIG. 7, for example, as shown in FIG. 7, a slight concave portion 12 is provided in the pipe 1 at every required distance of the pipeline, and a lubricant injection pipe 8 is provided in the portion 12.
Is connected, and a lubricant is injected around the material being conveyed and wetted. Alternatively, as shown in FIG. 8, it is common practice to provide an enlarged diameter portion 13 in the pipe 1 and connect the injection pipe 8 thereto to inject the lubricant.
【０００４】[0004]
【発明が解決しようとする課題】しかし、上記従来の各
方式では、搬送する配管の内径は、絞られずにほぼその
ままなので、水を注入しないかぎり、それ自体では圧力
損失の低減効果は期待できない、という問題がある。However, in each of the above-mentioned conventional systems, the inner diameter of the pipe to be conveyed is almost unchanged without being constricted. Therefore, unless water is injected, the effect of reducing the pressure loss by itself cannot be expected. There is a problem.
【０００５】本発明は、汚泥ケーキ等のパイプライン搬
送における従来の問題点を解決するためにされたもの
で、配管中に圧送される搬送物を絞り込んで配管の内径
より縮小した後、拡大させ、搬送物と配管内壁とに隙間
を作ることにより搬送圧力を低減させ、また、その隙間
に滑剤を注入することにより、さらに圧力損失低減効果
を上げ得るようにした、汚泥ケーキ等のパイプ搬送にお
ける圧力損失低減装置を提供しようとするものである。SUMMARY OF THE INVENTION The present invention has been made to solve the conventional problems in the pipeline transport of sludge cakes and the like. The transported product to be fed into the pipe is narrowed down, reduced from the inner diameter of the pipe, and then expanded. By reducing the transfer pressure by creating a gap between the conveyed material and the inner wall of the pipe, and by injecting a lubricant into the gap, the pressure loss reduction effect can be further improved. It is intended to provide a pressure loss reducing device.
【０００６】[0006]
【課題を解決するための手段】上記の目的を達成するた
めの本発明の構成について、実施例に対応する図面を参
照して説明すると、請求項１の装置は、汚泥ケーキ等の
高粘性物を圧送する配管２の内側に、流れ方向に沿って
漸次縮径される漸縮部４と、これに続いて、急激または
ゆるやかに拡径される拡大部５ａ，５ｂとよりなる突起
体３を設けたことを特徴とするものである。The structure of the present invention for achieving the above object will be described with reference to the drawings corresponding to the embodiments. Inside the pipe 2 for pressure-feeding, a projecting body 3 composed of a contracted portion 4 gradually reduced in diameter along the flow direction, and subsequently, enlarged portions 5a and 5b gradually or gradually expanded in diameter. It is characterized by having been provided.
【０００７】また、請求項２の装置は、請求項１の装置
において、拡大部５ａ，５ｂの内周面の端部付近に、管
内に滑剤11を注入する注入管８を設けたことを特徴とす
るものである。The device according to a second aspect of the present invention is characterized in that, in the device according to the first aspect, an injection pipe 8 for injecting a lubricant 11 into the pipe is provided near an end of the inner peripheral surface of the enlarged portions 5a and 5b. It is assumed that.
【０００８】[0008]
【発明の実施の形態】以下、本発明の実施の形態につい
て図面を参照して説明する。図１、図２は請求項１に対
応する本発明の第１の装置の実施例を示し、図３、図４
は請求項２に対応する本発明の第２の装置の実施例を示
したものである。Embodiments of the present invention will be described below with reference to the drawings. 1 and 2 show an embodiment of the first apparatus of the present invention corresponding to claim 1, and FIGS.
Shows an embodiment of the second apparatus of the present invention corresponding to claim 2.
【０００９】まず、第１の装置について説明する。図１
はその一実施例を示したもので、１は脱水ケーキ等を圧
送する配管で、該配管１の途中には、搬送中の脱水ケー
キ等を絞り込ませる絞り管２が、配管１の適所に配管１
と同軸に設けられている。First, the first device will be described. FIG.
1 shows an embodiment of the present invention. Reference numeral 1 denotes a pipe for pressure-feeding a dewatered cake and the like. In the middle of the pipe 1, a throttle pipe 2 for narrowing the dewatered cake and the like being conveyed is provided at an appropriate position of the pipe 1. 1
And coaxially.
【００１０】そして、絞り管２の内周には、一端側（入
口側）から他端側（出口側）に向けて次第に縮径される
テーパ状の漸縮部４と、その終端より段状のように急激
に拡径する拡大部５ａとにより形成された環状をなす突
起体３が内側に向けて設けられている。On the inner periphery of the throttle pipe 2, a tapered tapered portion 4 whose diameter is gradually reduced from one end (inlet side) to the other end (outlet side), and a stepped portion from the end thereof. The annular projection 3 formed by the enlarged portion 5a whose diameter is rapidly increased as shown in FIG.
【００１１】汚泥ケーキ等の高粘性物は、ポンプ（図示
を略す）により配管１中を圧送され、その途中で絞り管
２内を通ることになる。絞り管２に入った汚泥ケーキ等
６は、突起体３の漸縮部４と接して、移動しながら次第
に絞り込まれ、外形が小さく（縮径）され、圧送されて
行く。そして、漸縮部４から拡大部５ａへと進んだ汚泥
ケーキ等６は、そこで圧縮が解かれることになる。その
際、汚泥ケーキ等６の径は若干膨らむようにはなるが、
ポンプ圧送時に汚泥ケーキ中に混入された空気が、配管
内面と汚泥ケーキとの隙間７に入り、汚泥ケーキ自体
は、ほぼ縮径された状態、すなわち、配管１の内径より
若干小径の状態となって、絞り管２の出口側に接続され
た配管１に送り込まれて行くことになる。A highly viscous substance such as a sludge cake is pumped through a pipe 1 by a pump (not shown), and passes through a throttle pipe 2 on the way. The sludge cake 6 or the like 6 that has entered the restriction pipe 2 comes into contact with the gradually reducing portion 4 of the projection 3 and is gradually reduced while moving, the outer shape is reduced (diameter reduced), and the pressure is fed. Then, the sludge cake 6 or the like 6 that has progressed from the retraction portion 4 to the expansion portion 5a is decompressed there. At that time, the diameter of the sludge cake 6 and the like 6 slightly expands,
The air mixed into the sludge cake at the time of pumping enters the gap 7 between the inner surface of the pipe and the sludge cake, and the sludge cake itself is substantially reduced in diameter, that is, has a slightly smaller diameter than the inner diameter of the pipe 1. Thus, it is fed into the pipe 1 connected to the outlet side of the throttle pipe 2.
【００１２】したがって、それ以後は、汚泥ケーキ等６
は配管１と縮径にともなう隙間を存した状態で送られて
行くようになる。そのため、摩擦抵抗が少なくなり、搬
送圧力が軽減されることになる。Therefore, thereafter, sludge cake etc. 6
Is sent in a state where there is a gap with the pipe 1 due to the diameter reduction. Therefore, the frictional resistance is reduced, and the transfer pressure is reduced.
【００１３】図２は、絞り管２の他の実施例を示したも
のである。この実施例では、上記突起体３においての急
激に拡径する拡大部５ａに代わり、ゆるやかに拡径（漸
拡）するテーパ状の拡大部５ｂが形成されている。この
場合、拡大部５ｂのテーパは漸縮部４のテーパよりも傾
斜を急にしてやることが好ましいFIG. 2 shows another embodiment of the restrictor 2. In this embodiment, a tapered enlarged portion 5b that gradually expands (gradually expands) is formed instead of the enlarged portion 5a that expands rapidly in the protrusion 3. In this case, it is preferable to make the taper of the enlarged portion 5b steeper than the taper of the gradually reducing portion 4.
【００１４】次に、本発明の第２の装置について説明す
る。この装置においては、上記第１の装置に加え、縮径
された汚泥ケーキ等６と配管１内壁との間に滑剤を注入
する手段を備えている。図３は、その一実施例を示した
もので、絞り管２の内側に漸縮部４と急激に拡径する拡
大部５ａを有する突起体３を設けた点は図１の実施例と
同様であるが、この実施例では、絞り管２の外周に、滑
剤の注入管８と連通した環状路８が設けられ、この環状
路９と連通したスリット10が、拡径部５ａの終端部付近
の位置に、絞り管２内の全周にわたり開口して設けられ
ている。Next, a second device of the present invention will be described. This apparatus is provided with a means for injecting a lubricant between the sludge cake 6 or the like 6 having a reduced diameter and the inner wall of the pipe 1 in addition to the first apparatus. FIG. 3 shows an embodiment of the present invention, in which a protrusion 3 having a gradually contracting portion 4 and an enlarged portion 5a that rapidly expands in diameter is provided inside the throttle tube 2 as in the embodiment of FIG. However, in this embodiment, an annular path 8 communicating with the lubricant injection pipe 8 is provided on the outer circumference of the throttle pipe 2, and a slit 10 communicating with the annular path 9 is formed near the end of the enlarged diameter portion 5 a. Is provided over the entire circumference of the inside of the restrictor tube 2.
【００１５】この場合は、汚泥ケーキ等６の圧送中に、
注入管７より水または油や界面活性剤等の滑剤11を注入
する。滑剤11は注入管８より環状路９に流入し、スリッ
ト10より管２の全内周に流出し、漸縮部４を通過した汚
泥ケーキ等６と管内壁との隙間７に注入されることにな
る。それにより、汚泥ケーキ等と配管１内壁との摩擦抵
抗はより少なくなり、搬送圧力が大幅に低減されること
になる。In this case, during the pressure feeding of the sludge cake 6 or the like,
A lubricant 11 such as water or oil or a surfactant is injected from the injection pipe 7. The lubricant 11 flows from the injection pipe 8 into the annular path 9, flows out from the slit 10 to the entire inner circumference of the pipe 2, and is injected into the gap 7 between the sludge cake 6 or the like 6 that has passed through the reducing portion 4 and the inner wall of the pipe. become. Thereby, the frictional resistance between the sludge cake and the like and the inner wall of the pipe 1 is further reduced, and the transfer pressure is greatly reduced.
【００１６】図４は、上記実施例に対し、突起体３の拡
径部が、ゆるやかに拡径するテーパ状の拡径部５ｂであ
る場合の実施例を示したもので、滑剤の注入手段を設け
た構成は図３の実施例と同様であるから、その説明は省
略する。なお、滑剤の注入手段は、図３、図４の実施例
に限られるものではなく、図示を略したが、例えば注入
管８を直接管内に開口して設けることもでき、或は全周
のスリット10に代わり多数の細孔を設けることができる
等、適宜設計変更することは可能である。FIG. 4 shows an embodiment in which the enlarged portion of the projection 3 is a tapered enlarged portion 5b which gradually expands the diameter of the above-mentioned embodiment. The configuration provided with is the same as that of the embodiment of FIG. 3, and a description thereof will be omitted. The means for injecting the lubricant is not limited to the embodiment shown in FIGS. 3 and 4, but is not shown. For example, the injection pipe 8 may be directly opened in the pipe, or the entire circumference may be provided. The design can be changed as appropriate, for example, a large number of pores can be provided instead of the slits 10.
【００１７】本発明の装置では、上記のように、搬送す
る汚泥ケーキ等を縮小から拡大することにより、縮小す
ることによる圧力損失もあるが、それ以上の大幅な圧力
損失低減効果が得られるとともに、絞り管以後の円滑に
搬送できる距離が長くとれることになる。なお、上記各
実施例では、汚泥ケーキ等の絞り・圧力損失低減手段と
して、絞り管２を配管１に接続して設けているが、絞り
・圧力損失低減手段は、配管自体の中に設けることもで
きる。In the apparatus of the present invention, as described above, the sludge cake or the like to be conveyed is increased from the reduced size, thereby causing a pressure loss due to the reduced size. Therefore, the distance that can be smoothly conveyed after the restriction tube can be increased. In each of the above embodiments, the throttle pipe 2 is connected to the pipe 1 as a means for reducing the sludge cake or the like, and the throttle / pressure loss reducing means is provided in the pipe itself. Can also.
【００１８】[0018]
【実施例】次に、本発明の上記絞り管による装置と、絞
り管のない直管による従来のものとの比較試験を行っ
た。その試験の内容及び結果を次に示す。Next, a comparative test was conducted between the apparatus using the above-mentioned restriction pipe of the present invention and a conventional apparatus using a straight pipe without a restriction pipe. The content and results of the test are shown below.
【００１９】(1) 試験の内容 ｏ本発明で使用した絞り管の仕様は図に示すとおりであ
る。また、対象（従来例）とした直管は、内径が204mm
である。 ｏ搬送物としては、含水率83.3％の汚泥ケーキを使用し
た。 ｏ本発明装置の試験では、注入管８を閉じて滑剤の注入
を行わない場合と、注入管８より滑剤を注入した場合と
について行った。(1) Details of Test o Specifications of the throttle tube used in the present invention are as shown in the figure. Also, the straight pipe targeted (conventional example) has an inner diameter of 204 mm.
It is. o Sludge cake having a water content of 83.3% was used as the conveyed material. o In the test of the device of the present invention, the injection pipe 8 was closed and the lubricant was not injected, and the lubricant was injected from the injection pipe 8.
【００２０】(2) 試験の結果 本発明の装置と従来の直管との配管抵抗についての測定
結果を図６に示す。この試験結果によれば、本発明の装
置では、絞り管を有しない従来の直管により搬送するも
のに比べて、配管抵抗が少なくてすむことが示されてお
り、圧力損失低減効果のあることが確認された。(2) Test Results FIG. 6 shows the measurement results of the pipe resistance between the apparatus of the present invention and a conventional straight pipe. According to the test results, it is shown that the apparatus of the present invention requires less pipe resistance as compared with a conventional straight pipe having no restriction pipe, and has an effect of reducing pressure loss. Was confirmed.
【００２１】[0021]
【発明の効果】以上説明したように、本発明によれば、
汚泥ケーキ等の高粘性物をパイプラインにより搬送する
にあたり、パイプライン内に、搬送物を一旦絞り込んで
縮径させることにより、圧力損失を低減させて圧送でき
るようにしたので、本発明装置以後の配管内における摩
擦抵抗が軽減され、従来のような、単に直管内を圧送す
る方法に比べ、全体として少ない圧損で遠距離を搬送す
ることができることになる。そのため、パイプライン圧
送による設備の小型化と設備費及び動力費が大幅に低減
される。また、滑剤を注入する装置では、さらに一層の
経済性が図れる。As described above, according to the present invention,
When conveying highly viscous materials such as sludge cakes by pipeline, the conveyed material is once narrowed and reduced in diameter in the pipeline, so that pressure loss can be reduced and pressure feeding can be performed. The frictional resistance in the pipe is reduced, and a long distance can be conveyed with less pressure loss as a whole as compared with the conventional method of simply feeding the pressure in a straight pipe. Therefore, downsizing of the equipment by pipeline pumping, and equipment and power costs are greatly reduced. Further, in the device for injecting the lubricant, further economical efficiency can be achieved.
【図１】本発明の第１の装置の一実施例を示す縦断面図
である。FIG. 1 is a longitudinal sectional view showing one embodiment of a first device of the present invention.
【図２】同他の実施例を示す縦断面図である。FIG. 2 is a longitudinal sectional view showing another embodiment.
【図３】本発明の第２の装置の一実施例を示す縦断面図
である。FIG. 3 is a longitudinal sectional view showing one embodiment of the second device of the present invention.
【図４】同他の実施例を示す縦断面図である。FIG. 4 is a longitudinal sectional view showing another embodiment.
【図５】本発明の試験に使用した装置を示す縦断面図で
ある。FIG. 5 is a longitudinal sectional view showing an apparatus used for the test of the present invention.
【図６】試験におけるトップスピード流量と配管抵抗の
関係を示す図である。FIG. 6 is a diagram showing a relationship between a top speed flow rate and a pipe resistance in a test.
【図７】従来法の一例を示す縦断面図である。FIG. 7 is a longitudinal sectional view showing an example of a conventional method.
【図８】同他例を示した縦断面図である。FIG. 8 is a longitudinal sectional view showing the other example.
１ 配管 ２ 絞り管 ３ 突起体 ４ 漸縮部 ５ａ，５ｂ 拡大部 ６ 汚泥ケーキ等 ７ 間隙部 ８ 注入管 ９ 環状路 10 スリット 11 滑剤 DESCRIPTION OF SYMBOLS 1 Piping 2 Restrictor 3 Projection 4 Reducing part 5a, 5b Enlarged part 6 Sludge cake etc. 7 Gap part 8 Injection pipe 9 Annular path 10 Slit 11 Lubricant
───────────────────────────────────────────────────── フロントページの続き (72)発明者 地田 靖 東京都中央区日本橋室町３−１−３ 株式 会社クボタ東京本社内 (72)発明者 鈴木 剛 東京都中央区日本橋室町３−１−３ 株式 会社クボタ東京本社内 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Yasushi Chida 3-1-3 Nihonbashi Muromachi, Chuo-ku, Tokyo Kubota Tokyo Head Office (72) Inventor Tsuyoshi Suzuki 3-1-3 Nihonbashi Muromachi, Chuo-ku, Tokyo Kubota Tokyo Head Office
Claims (2)
の内側に、流れ方向に沿って漸次縮径される漸縮部と、
これに続いて、急激またはゆるやかに拡径される拡大部
とよりなる突起体を設けたことを特徴とする、汚泥ケー
キ等のパイプ搬送における圧力損失低減装置。1. Inside a pipe for feeding a high-viscosity material such as a sludge cake, a contraction portion gradually reduced in diameter along a flow direction;
Subsequent to this, a pressure loss reducing device for pipe transport of sludge cake or the like, characterized in that a projection consisting of an enlarged portion that is rapidly or slowly expanded in diameter is provided.
剤を注入する注入管を設けたことを特徴とする、請求項
１記載の汚泥ケーキ等のパイプ搬送における圧力損失低
減装置。2. An apparatus according to claim 1, wherein an injection pipe for injecting a lubricant into the pipe is provided near an end of an inner peripheral surface of the enlarged section. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6722497A JPH10246399A (en) | 1997-03-05 | 1997-03-05 | Pressure loss reducing device in pipe conveyance of sludge cake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6722497A JPH10246399A (en) | 1997-03-05 | 1997-03-05 | Pressure loss reducing device in pipe conveyance of sludge cake |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH10246399A true JPH10246399A (en) | 1998-09-14 |
Family
ID=13338735
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6722497A Pending JPH10246399A (en) | 1997-03-05 | 1997-03-05 | Pressure loss reducing device in pipe conveyance of sludge cake |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH10246399A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002361295A (en) * | 2001-06-11 | 2002-12-17 | Sumitomo Heavy Ind Ltd | Apparatus for supplying hydrous combustible |
| CN105588933A (en) * | 2015-12-12 | 2016-05-18 | 江曼 | Petroleum pipeline online tester |
-
1997
- 1997-03-05 JP JP6722497A patent/JPH10246399A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002361295A (en) * | 2001-06-11 | 2002-12-17 | Sumitomo Heavy Ind Ltd | Apparatus for supplying hydrous combustible |
| JP4566461B2 (en) * | 2001-06-11 | 2010-10-20 | 住友重機械エンバイロメント株式会社 | Sludge supply equipment |
| CN105588933A (en) * | 2015-12-12 | 2016-05-18 | 江曼 | Petroleum pipeline online tester |
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