JPS627403Y2

JPS627403Y2 -

Info

Publication number: JPS627403Y2
Application number: JP1979138219U
Authority: JP
Priority date: 1979-10-04
Filing date: 1979-10-04
Publication date: 1987-02-20
Also published as: JPS5654955U

Description

【考案の詳細な説明】本考案は液噴霧ノズルに関する。[Detailed explanation of the idea] The present invention relates to a liquid spray nozzle.

従来、液の噴霧ノズルには、気液を予混合した
後スリツトや噴出口から噴出させるものや、高圧
のガス及び液を同心円状に設けた噴出口から噴出
させるものがあつたが、これらによれば、スリツ
トや開口が２相流のはげしい流れのために摩耗が
起り、特に固形分を含む液にあつてはこの傾向が
強いという欠点があつた。さらに後者の場合にあ
つては、広い噴霧角を得ることができなかつた。
本考案はこのような欠点の解消に役立つものであ
る。 Conventionally, liquid spray nozzles include those that premix gas and liquid and then spray them from a slit or jet nozzle, and those that jet high-pressure gas and liquid from concentric jet nozzles. According to this method, the slits and openings were abraded due to the strong two-phase flow, and this tendency was particularly strong in the case of liquids containing solids. Furthermore, in the latter case, it was not possible to obtain a wide spray angle.
The present invention helps to overcome these drawbacks.

本考案の実施態様の一例を述べる。 An example of an embodiment of the present invention will be described.

同心円からなる２重管の外管３の後端に接線方
向に接続する導入管４を設け、外管先端面に近く
位置する内管１先端は先端近くにおいてほぼ半径
方向にのみ開口する複数の開口２を有する。すな
わち内管１の先端は閉塞し、開口２はほぼ半径方
向に開く。外管には空気又は水蒸気等の気体を圧
入し、内管開口から液が噴出する。 An introductory tube 4 is provided which is connected tangentially to the rear end of the outer tube 3 of the double tube made of concentric circles, and the tip of the inner tube 1 located close to the tip surface of the outer tube has a plurality of tubes that open almost only in the radial direction near the tip. It has an opening 2. That is, the tip of the inner tube 1 is closed, and the opening 2 is opened approximately in the radial direction. Gas such as air or water vapor is pressurized into the outer tube, and liquid is ejected from the opening of the inner tube.

以上のように構成して、外管には気体を圧入せ
しめると、導入管４は外管３に対して接線方向に
接続したものであるから、導入管から外管に入つ
た気体は外管内で旋回流を形成し、外管先端の附
近においてもはげしく旋回しつつ管外に噴流す
る。内管１を通る液はこの部分において半径方向
に液を噴出せしめるので、気体の旋回噴流のもつ
大きな連度勾配から生ずる剪断力によつて液滴は
微細化される。特に外管先端の先において外管外
方に速度分布の大きい噴流が形成されるからであ
る。さらに気体の旋回流のため、液は広角度に噴
出することができる。一例として20mm径の導入管
を50mm径の外管に接続し、内管を10mm径とし、液
を３m³／ｈ、空気を３Kg／cm²Ｇ、500m³／ｈで流
入せしめるとき、液は広角度で微粒を形成して噴
霧することができた。 With the above configuration, when gas is pressurized into the outer tube, since the introduction tube 4 is connected tangentially to the outer tube 3, the gas entering the outer tube from the introduction tube flows into the outer tube. This forms a swirling flow, and it flows out of the tube while swirling vigorously near the tip of the outer tube. Since the liquid passing through the inner tube 1 is ejected in the radial direction at this portion, the droplets are miniaturized by the shearing force generated from the large continuous gradient of the swirling jet of gas. This is because a jet with a large velocity distribution is formed outwardly from the outer tube, especially at the tip of the outer tube. Furthermore, due to the swirling flow of gas, the liquid can be ejected at a wide angle. As an example, when an inlet pipe with a diameter of 20 mm is connected to an outer pipe with a diameter of 50 mm, the inner pipe has a diameter of 10 mm, and the liquid is allowed to flow in at a rate of 3 m ³ /h, air at 3 Kg/cm ² G, and 500 m ³ /h, the liquid It was possible to form and spray fine particles at a wide angle.

なお、外管内で旋回流を形成する方法として、
気体導入管を接線方向に接続するもののほか、導
入管先端を２重管内で接線方向に向けて開口する
もの、または２重管内に固定翼を設けたもの等、
その他いかなる方法であつてもよい。 In addition, as a method of forming a swirling flow within the outer tube,
In addition to those in which the gas introduction pipe is connected tangentially, there are also those in which the tip of the introduction pipe is opened in the tangential direction within a double pipe, or those in which fixed wings are provided within the double pipe.
Any other method may be used.

本考案にかかる液噴霧ノズルは油用バーナ、ス
プレー塔における液スプレー、廃液燃焼用バーナ
等に広く利用できる。特に燃料ガス中のH₂S、
HCN、NH₃等の不純物を除去すべく処理した、
含硫黄ロダンアンモン溶液等の燃焼処理用バーナ
としてきわめて好結果を得ることができた。通常
のバーナによるときは液中に含有する硫黄等の固
形分によつて、バーナの摩耗もはげしいという難
点の克服に役立つものである。 The liquid spray nozzle according to the present invention can be widely used in oil burners, liquid sprays in spray towers, waste liquid combustion burners, etc. Especially H ₂ S in fuel gas,
Treated to remove impurities such as HCN and NH ₃ ,
Very good results were obtained as a burner for combustion treatment of sulfur-containing rhodan ammonium solutions. This helps overcome the disadvantage that when using a normal burner, the burner is subject to severe wear due to solid content such as sulfur contained in the liquid.

[Brief explanation of the drawing]

図面は本考案の一実施例の概念を示すもので、
第１図は全体横断面図であり、第２図はその縦断
面図である。１……内管、２……開口、３……外管、４……
導入管。 The drawing shows the concept of one embodiment of the present invention.
FIG. 1 is an overall cross-sectional view, and FIG. 2 is a vertical cross-sectional view thereof. 1...Inner tube, 2...Opening, 3...Outer tube, 4...
Introductory tube.

Claims

[Claims for Utility Model Registration] 1. An introduction pipe is provided that connects to the rear end of the outer pipe of a double pipe made of concentric circles, and gas is pressurized into the outer pipe to create a swirling flow within the pipe, so that the pipe is close to the front end of the outer pipe. A liquid spray nozzle in which liquid is ejected from the inner tube opening through a plurality of openings that open only in the radial direction near the tip of the inner tube. 2. The liquid spray nozzle according to claim 1, wherein the gas introduction pipe to the outer tube is an introduction pipe connected tangentially to the rear end of the outer tube. 3. The liquid spray nozzle according to claim 1, wherein the gas introduction pipe to the outer pipe is an introduction pipe that opens in a tangential direction within a double pipe. 4. A liquid spray nozzle according to claim 1, which is provided with fixed wings for generating a swirling flow of gas in a double pipe.