JP2005238019A - Two fluid nozzle structure - Google Patents

Two fluid nozzle structure Download PDF

Info

Publication number
JP2005238019A
JP2005238019A JP2004048035A JP2004048035A JP2005238019A JP 2005238019 A JP2005238019 A JP 2005238019A JP 2004048035 A JP2004048035 A JP 2004048035A JP 2004048035 A JP2004048035 A JP 2004048035A JP 2005238019 A JP2005238019 A JP 2005238019A
Authority
JP
Japan
Prior art keywords
fluid
nozzle
peripheral surface
seal member
flow path
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.)
Granted
Application number
JP2004048035A
Other languages
Japanese (ja)
Other versions
JP4408722B2 (en
Inventor
Hironori Sato
裕紀 佐藤
Akira Miyato
章 宮藤
Masahide Tsujishita
正秀 辻下
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Osaka Gas Co Ltd
Original Assignee
Osaka Gas Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Osaka Gas Co Ltd filed Critical Osaka Gas Co Ltd
Priority to JP2004048035A priority Critical patent/JP4408722B2/en
Publication of JP2005238019A publication Critical patent/JP2005238019A/en
Application granted granted Critical
Publication of JP4408722B2 publication Critical patent/JP4408722B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Images

Landscapes

  • Nozzles (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a two fluid nozzle in which a 1st fluid is never mixed with a 2nd fluid in the nozzle. <P>SOLUTION: In the two fluid nozzle structure for jetting the 1st fluid and the 2nd fluid in a mixed state to an objective space or an object, a 1st connection hole to which a base end part of an inside pipe is connected to communicate with a 1st fluid injection port and a 2nd connection hole to which a base end part of an outside pipe is connected to communicate with a 2nd fluid injection port are formed to communicate with each other in a nozzle base part, a 1st seal member for preventing the approach of the 1st fluid to a 2nd flow passage side and a 2nd seal member for preventing the approach of the 2nd fluid to a 1st flow passage side are provided between the outer peripheral surface of the inside pipe in the base end part side and the inner peripheral surface of the nozzle base part facing the 1st connection part and a communication passage for opening a space between the outer peripheral surface of the inside pipe and the inner peripheral surface of the nozzle base part facing the 1st connection hole to the outside is formed between the 1st seal member and the 2nd seal member. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

本発明は、ガス処理装置や塗装装置等の装置において、二つの流体を外部混合させて噴射するための二流体ノズル構造に関し、詳しくは、対象空間又は対象物に対し第１流体を噴射する第１噴射口と、その第１噴射口の周囲において、噴射された第１流体と混合させる第２流体を噴射する第２噴射口とを備えたノズル先端部と、前記第１噴射口に連通する第１流路を形成してある内管と、これの外周面との間に前記第２噴射口に連通する第２流路を形成する外管とを備えたノズル中間部と、前記第１流路に第１流体を供給するための第１流体注入口と、前記第２流路に第２流体を供給するための第２流体注入口とを備えたノズル基部とからなる二流体ノズル構造に関する。   The present invention relates to a two-fluid nozzle structure for injecting two fluids externally mixed in an apparatus such as a gas processing apparatus or a coating apparatus, and more specifically, a first fluid that injects a first fluid into an object space or an object. A nozzle tip provided with one injection port and a second injection port for injecting a second fluid to be mixed with the injected first fluid around the first injection port, and communicated with the first injection port A nozzle intermediate portion comprising an inner tube in which a first channel is formed and an outer tube forming a second channel communicating with the second injection port between the inner tube and the outer peripheral surface; A two-fluid nozzle structure comprising a first fluid inlet for supplying a first fluid to the flow path and a nozzle base having a second fluid inlet for supplying a second fluid to the second flow path About.

従来の二流体ノズル構造は、内管の基端部側の外周面と第１接続孔に臨むノズル基部の内周面との間において、複数箇所にＯリングによるシール箇所を設けて、ノズル基部の第１流体注入口から供給されて第１流路を通過する第１流体が、内管の基端部側の外周面と第１接続孔に臨むノズル基部の内周面との間に現出する隙間を通じて第２流路側に漏洩することを防止していた。   In the conventional two-fluid nozzle structure, a plurality of seal portions are provided by O-rings between the outer peripheral surface on the base end side of the inner tube and the inner peripheral surface of the nozzle base facing the first connection hole. The first fluid supplied from the first fluid inlet and passing through the first flow path is present between the outer peripheral surface on the base end side of the inner tube and the inner peripheral surface of the nozzle base facing the first connection hole. Leakage to the second flow path side through the exiting gap was prevented.

しかし、従来の二流体ノズル構造だと、第１流体の第２流路への漏洩防止手段が複数箇所に設けられたＯリングによるものであるため、これら全てのＯリングが老朽化又は破損等によりシール性が低下してしまったとき、嵌通孔の内周面と内管の外周面との接当領域に現出する隙間を通じて第１流体が第２流路に漏洩することを防ぐことができず、例えば、この従来の二流体ノズル構造のノズルを燃焼装置の排気管における排ガスの脱硝装置に用いた場合では、脱硝還元剤である尿素水が第１流体、尿素水を微粒化する空気が第２流体として、それぞれ第１流路、第２流路を通じてノズル先端部から噴射される構成となり、この構成においては、Ｏリングが老朽化等により破損してシール性が低下してしまうことで現出した隙間から、尿素水が第２流路に漏洩してしまうと、第２流路内で尿素水中の尿素が析出して、第２流路が目詰まりしてしまう恐れがあった。
そして更に、この第２流路の目詰まりにより、ノズル先端部の第２噴射口より空気が十分に噴射されない状態となると、尿素水が十分に微粒化されずに第１噴射口から流れ出してしまい、燃焼装置からの高温の排ガスにより排気管に流れ出た尿素水が昇温し、それによって発生する熱応力により排気管が破損する恐れもあった。
この実情に鑑み、本発明の主たる課題は、合理的な改良をもって上記問題を効果的に解消する点にある。 However, in the conventional two-fluid nozzle structure, since the means for preventing leakage of the first fluid to the second flow path is due to the O-rings provided at a plurality of locations, all these O-rings are worn out or damaged. To prevent the first fluid from leaking into the second flow path through the gap appearing in the contact area between the inner peripheral surface of the fitting hole and the outer peripheral surface of the inner tube when the sealing performance is deteriorated by For example, when this conventional two-fluid nozzle structure nozzle is used for an exhaust gas denitration device in an exhaust pipe of a combustion device, urea water as a denitration reducing agent atomizes the first fluid, urea water. Air is jetted from the nozzle tip as the second fluid through the first flow path and the second flow path, respectively, and in this configuration, the O-ring is damaged due to aging and the sealing performance is lowered. From the gap that appeared, urea water If leaked to the second flow path, urea in the urea water in the second flow path is precipitated, the second passage there is a fear that clogging.
Further, when the air is not sufficiently injected from the second injection port at the tip of the nozzle due to the clogging of the second flow path, the urea water flows out from the first injection port without being sufficiently atomized. Further, the temperature of the urea water flowing into the exhaust pipe is increased by the high-temperature exhaust gas from the combustion device, and the exhaust pipe may be damaged due to the thermal stress generated thereby.
In view of this situation, the main problem of the present invention is to effectively solve the above problems with a rational improvement.

本発明の第１特徴構成は、二流体ノズル構造に係り、その構造は、
対象空間又は対象物に対し第１流体を噴射する第１噴射口と、その第１噴射口の周囲において、噴射された第１流体と混合させる第２流体を噴射する第２噴射口とを備えたノズル先端部と、
前記第１噴射口に連通する第１流路を形成してある内管と、これの外周面との間に前記第２噴射口に連通する第２流路を形成する外管とを備えたノズル中間部と、
前記第１流路に第１流体を供給するための第１流体注入口と、前記第２流路に第２流体を供給するための第２流体注入口とを備えたノズル基部とからなる二流体ノズル構造において、
前記ノズル基部に、第１流体注入口に連通する状態で内管の基端部が接続される第１接続孔と、第２流体注入口に連通する状態で外管の基端部が接続される第２接続孔とが連通形成されているとともに、
内管の基端部側の外周面と第１接続孔に臨むノズル基部の内周面との間に、第１流体の前記第２流路側への進入を防止するための第１シール部材と第２流体の前記第１流路側への進入を防止するための第２シール部材とが設けられ、それら第１シール部材と第２シール部材との間に、内管の外周面と前記第１接続孔に臨むノズル基部の内周面との間を外部に開放する連通路が形成されてある点にある。 A first characteristic configuration of the present invention relates to a two-fluid nozzle structure,
A first ejection port that ejects a first fluid to a target space or an object, and a second ejection port that ejects a second fluid to be mixed with the ejected first fluid around the first ejection port. A nozzle tip,
An inner pipe that forms a first flow path that communicates with the first injection port, and an outer pipe that forms a second flow path that communicates with the second injection port between the inner pipe and the outer peripheral surface thereof. Nozzle middle part,
A nozzle base having a first fluid inlet for supplying a first fluid to the first flow path and a second fluid inlet for supplying a second fluid to the second flow path; In the fluid nozzle structure,
The nozzle base is connected to the first connection hole to which the base end of the inner pipe is connected in communication with the first fluid inlet, and to the base end of the outer pipe in communication with the second fluid inlet. A second connection hole is formed in communication with the second connection hole,
A first seal member for preventing the first fluid from entering the second flow path side between the outer peripheral surface on the base end side of the inner pipe and the inner peripheral surface of the nozzle base facing the first connection hole; A second seal member for preventing the second fluid from entering the first flow path side is provided, and between the first seal member and the second seal member, the outer peripheral surface of the inner tube and the first seal member are provided. A communication path that opens to the outside between the inner peripheral surface of the nozzle base and facing the connection hole is formed.

つまり、この構成であれば、ノズル先端部の噴射口から噴射するために加圧された状態でそれぞれ第１流路及び第２流路に注入される第１流体及び第２流体において、内管の基端部側の外周面と第１接続孔に臨むノズル基部の内周面との間に設けた第１シール部材と第２シール部材との間に、内管の外周面と第１接続孔に臨むノズル基部の内周面との間を外部に開放する連通路が形成することで、シール部材が老朽化等の破損によるシール性の低下により、第１流体又は第２流体が内管の基端部側の外周面と第１接続孔に臨むノズル基部の内周面との間に進入してしまっても、それら第１流体又は第２流体が加圧された状態にある第２流路又は第１流路に漏洩することなく、連通路を通じて外部に排出されるので、第１流路及び第２流路内において、第１流体と第２流体とが混合されることなく、これによって、この二流体ノズル構造であれば、例えば、燃焼装置の排気管における排ガスの脱硝装置に用いても、第２流体である空気が通じる第２流路内で第１流体である尿素水中の尿素が析出して目詰まりしたりすることなく、十分に微粒化した状態の尿素水を噴射することができるとともに、これによって、第２流路の目詰まりを原因とする排気管の破損（すなわち、ノズル先端部の第２噴射口より空気が十分に噴射されない状態となり、空気により尿素水が十分に微粒化されずに第１噴射口から噴射されるので、燃焼装置からの高温の排ガスにより高温になっている排気管に霧状に微粒化されていない尿素水がかかることが原因となって発生する熱応力により、排気管１に歪みが起きて破損すること）も防止することができる。   In other words, with this configuration, in the first fluid and the second fluid injected into the first flow path and the second flow path in a pressurized state in order to be injected from the injection port at the nozzle tip, the inner pipe Between the outer peripheral surface of the inner tube and the first seal member provided between the outer peripheral surface of the nozzle base portion facing the first connection hole and the second seal member. By forming a communication path that opens to the outside between the inner peripheral surface of the nozzle base facing the hole, the first fluid or the second fluid flows into the inner pipe due to a decrease in sealing performance due to damage such as aging. The second fluid is in a state where the first fluid or the second fluid is pressurized even if it enters between the outer peripheral surface on the base end side of the nozzle and the inner peripheral surface of the nozzle base facing the first connection hole. Since it is discharged outside through the communication path without leaking into the flow path or the first flow path, the first flow path and the second flow path Thus, the first fluid and the second fluid are not mixed. Thus, if this two-fluid nozzle structure is used, for example, even if it is used in an exhaust gas denitration device in an exhaust pipe of a combustion device, the second fluid It is possible to inject the urea water in a sufficiently atomized state without causing the urea in the urea water, which is the first fluid, to precipitate and clog in the second flow path through which certain air is communicated. The exhaust pipe is damaged due to the clogging of the second flow path (that is, the air is not sufficiently injected from the second injection port at the nozzle tip, and the urea water is not sufficiently atomized by the air and the Since it is injected from one injection port, exhaust gas is caused by thermal stress generated due to the application of urea water that is not atomized in a mist to the exhaust pipe that is heated by high-temperature exhaust gas from the combustion device. Strain in tube 1 Be damaged awake) also it can be prevented.

本発明の第２特徴構成は、
前記連通路が、第１接続孔に臨むノズル基部の内周面から径方向外方でノズル基部の外面に達するように形成されてある点にある。 The second characteristic configuration of the present invention is:
The communication path is formed so as to reach the outer surface of the nozzle base radially outward from the inner peripheral surface of the nozzle base facing the first connection hole.

つまり、この構成であれば、連通路が第１接続孔に臨むノズル基部の内周面から最短距離でノズル基部の外面に達するので、内管の基端部側の外周面と第１接続孔に臨むノズル基部の内周面との間に進入した第１流体又は第２流体をより迅速に外部に流出させることができるので、より効果的に第１流体又は第２流体が第２流路又は第１流路に漏洩することを防止することができる。   In other words, with this configuration, the communication path reaches the outer surface of the nozzle base at the shortest distance from the inner peripheral surface of the nozzle base facing the first connection hole, so the outer peripheral surface on the base end side of the inner tube and the first connection hole Since the first fluid or the second fluid that has entered between the inner peripheral surface of the nozzle base that faces the nozzle can flow out to the outside more quickly, the first fluid or the second fluid is more effectively transferred to the second flow path. Or it can prevent leaking to a 1st flow path.

本発明の第３特徴構成は、
少なくとも第１流体注入口を備えた第１ノズル基材と第２流体注入口を備えた第２ノズル基材との２部材から構成されるノズル基部において、第１ノズル基材側に第１シール部材が装着され、第２ノズル基材側に第２シール部材が装着されているとともに、
第１ノズル基材と第２ノズル基材との接当端面の少なくとも一方側に、前記連通路となる溝が形成されている点にある。 The third characteristic configuration of the present invention is:
In a nozzle base composed of at least a first nozzle substrate having a first fluid inlet and a second nozzle substrate having a second fluid inlet, a first seal is provided on the first nozzle substrate side. The member is mounted, and the second seal member is mounted on the second nozzle substrate side,
A groove serving as the communication path is formed on at least one side of the contact end face between the first nozzle base and the second nozzle base.

つまり、この構成であれば、構造上少なくとも２部材で構成されるノズル基部において、第１ノズル基材に第１シール部材を装着すると共に、第２ノズル基材に第２シール部材を装着し、それら第１ノズル基材と第２ノズル基材との接当端面の少なくとも一方側に連通路となる溝を形成することで、連通路をノズル基材に穿孔することに比べ、容易に連通路を設けることができる。
また、連通路の洗浄作業においても、ノズル基部を第１ノズル基材と第２ノズル基材とに分割して、溝を洗浄するだけで済むので、作業効率が向上し、作業全体を容易かつ迅速に行うことができる。 That is, with this configuration, in the nozzle base portion that is structurally composed of at least two members, the first seal member is mounted on the first nozzle base material, and the second seal member is mounted on the second nozzle base material, By forming a groove serving as a communication path on at least one side of the contact end surfaces of the first nozzle base material and the second nozzle base material, it is easier to connect the communication path than perforating the nozzle base material. Can be provided.
Also, in the cleaning operation of the communication path, the nozzle base is divided into the first nozzle base material and the second nozzle base material and only the groove is cleaned, so that the work efficiency is improved and the entire operation is facilitated. Can be done quickly.

本発明の第４特徴構成は、
前記第１シール部材又は第２シール部材が、第１ノズル基材と第２ノズル基材との接当端面に配設されてある点にある。 The fourth characteristic configuration of the present invention is:
The first seal member or the second seal member is disposed on a contact end surface between the first nozzle base material and the second nozzle base material.

つまり、この構成であれば、内管の基端部側の外周面と第１接続孔に臨むノズル基部の内周面との間に設けられる第１又は第２シール部材が、ノズル基部を構成する第１ノズル基材と第２ノズル基材との接当端面に配設されているので、シール部材の配設作業やシール部材の交換作業等のメンテナンス作業を容易に行うことができる。   That is, in this configuration, the first or second seal member provided between the outer peripheral surface on the base end side of the inner tube and the inner peripheral surface of the nozzle base facing the first connection hole constitutes the nozzle base. Since the first nozzle base material and the second nozzle base material are disposed on the contact end face, maintenance work such as seal member placement work and seal member replacement work can be easily performed.

本発明の第５特徴構成は、
前記第１シール部材及び第２シール部材が、Ｏリングである点にある。 The fifth characteristic configuration of the present invention is:
The first seal member and the second seal member are O-rings.

つまり、この構成であれば、内管の基端部を接続する第１接続孔に設けられた第１及び第２シール部材がＯリングであるので、第１接続孔に内管の基端部を接続する際、内管を基端部側から第１接続孔に挿入するだけで第１及び第２シール部材でシールされた状態にすることができ、よって、二流体ノズルの製造工程において、内管の基端部を第１接続孔に挿入し、内管の基端部側の外周面と第１接続孔に臨むノズル基部の内周面との間における２箇所をシールするといった複雑な工程を省くことができるので、製造効率を向上させることができる。
また、Ｏリングであると、内管を容易に脱着することができるので、メンテナンス等においても内管の着脱作業の効率を向上させることができるとともに、破損等によりＯリングのシール性が低下しても、Ｏリングは容易に交換することもできるので、メンテナンス作業においても作業効率を向上させることができる。 That is, in this configuration, since the first and second seal members provided in the first connection hole connecting the base end portion of the inner pipe are O-rings, the base end portion of the inner pipe is provided in the first connection hole. Can be sealed with the first and second sealing members simply by inserting the inner tube into the first connection hole from the base end side, so in the manufacturing process of the two-fluid nozzle, The base end portion of the inner tube is inserted into the first connection hole, and two places between the outer peripheral surface on the base end portion side of the inner tube and the inner peripheral surface of the nozzle base facing the first connection hole are sealed. Since the process can be omitted, the production efficiency can be improved.
In addition, since the inner tube can be easily detached when the O-ring is used, the efficiency of the inner tube attachment / detachment work can be improved even during maintenance, etc., and the sealing performance of the O-ring is reduced due to breakage or the like. However, since the O-ring can be easily replaced, work efficiency can be improved even in maintenance work.

本発明の第６特徴構成は、
前記第１流体及び前記第２流体のいずれか一方を液体とし、他方を気体にすることで、液体を気体により微粒化された霧化状態で噴射可能に構成されている点にある。 The sixth characteristic configuration of the present invention is:
One of the first fluid and the second fluid is a liquid and the other is a gas so that the liquid can be ejected in an atomized state atomized by the gas.

つまり、この構成であれば、液体を、気体により微粒化させて霧化状態に噴射する場合において、圧力変動が起こりやすい非圧縮性の液体が、一時的に高圧になっても、内管の基端部側の外周面と第１接続孔に臨むノズル基部の内周面との間に進入した液体を連通路を介して外部に流出させて、比較的圧力が安定する圧縮性の気体が流れる流路側への漏洩することを防止することができる。   In other words, with this configuration, when the liquid is atomized with a gas and sprayed into an atomized state, the incompressible liquid, which is likely to cause pressure fluctuations, is The liquid that has entered between the outer peripheral surface on the base end side and the inner peripheral surface of the nozzle base facing the first connection hole is discharged to the outside through the communication path, and a compressible gas with relatively stable pressure is generated. It is possible to prevent leakage to the flowing channel side.

〔実施形態〕
図１〜図５は、本発明の実施形態として燃焼装置の排気管における二流体ノズルを示し、Ｅは燃焼装置であるエンジン、１はエンジンＥから排出される排ガスＧをケーシングＣの外部に導く排気管、Ｒは排ガスＧ中の窒素酸化物ＮＯｘを窒素ガスＮ2と水Ｈ2Ｏとに還元するための脱硝装置で、脱硝装置Ｒは、対象空間である排気管１の途中部分において、排気管１内を通過する排ガスＧに対して脱硝還元剤を噴霧するためのノズル２を貫装して設けられている。 Embodiment
1 to 5 show a two-fluid nozzle in an exhaust pipe of a combustion apparatus as an embodiment of the present invention, where E is an engine which is a combustion apparatus, and 1 is an exhaust gas G discharged from the engine E to the outside of the casing C. The exhaust pipe R is a denitration device for reducing nitrogen oxide NOx in the exhaust gas G to nitrogen gas N 2 and water H 2 O. The denitration device R is located in the middle of the exhaust pipe 1 that is the target space. A nozzle 2 for spraying a denitration reducing agent on the exhaust gas G passing through the exhaust pipe 1 is provided so as to penetrate therethrough.

ノズル２は、内管３と外管４とから形成される第１流路５及び第２流路６を通じて、第１流体及び第２流体の二流体を噴射可能な二流体ノズル構造になっていて、ノズル先端部７とノズル中間部８とノズル基部９との３部構成になっている。   The nozzle 2 has a two-fluid nozzle structure capable of ejecting two fluids of a first fluid and a second fluid through a first flow path 5 and a second flow path 6 formed by an inner tube 3 and an outer tube 4. Thus, the nozzle tip portion 7, the nozzle intermediate portion 8, and the nozzle base portion 9 are configured in three parts.

ノズル先端部７には、第１流体としての脱硝還元剤である高圧の尿素水（ＣＨ4Ｎ2Ｏ）１０を噴射する第１噴射口１２と、第１噴射口１２の周囲に、第１噴射口１２から噴射される尿素水１０を霧状に微粒化させるために高圧空気１１を噴射する第２噴射口とが形成されていて、第１噴射口１２は第１流路５と連通する状態で内管３の先端に開口形成されているとともに、第２噴射口１３は、第２流路６と連通する状態で、外管４と螺合連結されるノズル先端部カバー１４の先端側開口の内周面と、第１噴射口１２を形成する内管３の先端部３ａの外周面との間に設けられている。 The nozzle tip 7 has a first injection port 12 that injects high-pressure urea water (CH 4 N 2 O) 10 that is a denitration reducing agent as the first fluid, and a first injection port 12 around the first injection port 12. A second injection port for injecting high-pressure air 11 is formed to atomize the urea water 10 injected from the injection port 12 in the form of a mist, and the first injection port 12 communicates with the first flow path 5. In the state, an opening is formed at the tip of the inner tube 3, and the second injection port 13 communicates with the second flow path 6 and is connected to the outer tube 4 and is connected to the tip of the nozzle tip cover 14. It is provided between the inner peripheral surface of the opening and the outer peripheral surface of the distal end portion 3 a of the inner tube 3 that forms the first injection port 12.

内管３の先端部３ａは、外管４とノズル先端部カバー１４との間に挟持された状態で、かつ、ノズル先端部カバー１４の内周面と接当する形態で固定されており、内管の先端部３ａには、第２流路６の一部として高圧空気１１を連通させる複数の連通孔Ｈが周方向に所定のピッチで形成されている。   The tip 3a of the inner tube 3 is fixed in a state where it is sandwiched between the outer tube 4 and the nozzle tip cover 14 and in contact with the inner peripheral surface of the nozzle tip cover 14. A plurality of communication holes H through which the high-pressure air 11 communicates as a part of the second flow path 6 are formed in the distal end portion 3a of the inner tube at a predetermined pitch in the circumferential direction.

ノズル中間部８は、内管３内の空間を第１流体である尿素水１０が流れる第１流路５とし、内管３の外周面と外管４の内周面との間の空間を第２流体である高圧空気１１が流れる第２流路６とするとともに、ノズル中間部８において内管３の外径形状を内管３の基端部３ｂから先端部３ａに向かって変更させて、第２流路６を拡張し、再び、縮小することで、第２流路６に注入された高圧空気１１の圧力を一度、低下させて第２流路６内で高圧空気１１を均等化し、そして、再び圧力上昇させて、第２流路６と連通してあるノズル先端部７の第２噴射口１３から高圧空気１１を噴射可能な構成にしてある。   The nozzle intermediate portion 8 uses the space in the inner tube 3 as the first flow path 5 through which the urea water 10 as the first fluid flows, and the space between the outer peripheral surface of the inner tube 3 and the inner peripheral surface of the outer tube 4. In addition to the second flow path 6 through which the high-pressure air 11 as the second fluid flows, the outer diameter shape of the inner tube 3 is changed from the proximal end portion 3b of the inner tube 3 toward the distal end portion 3a at the nozzle intermediate portion 8. The second flow path 6 is expanded and contracted again, so that the pressure of the high-pressure air 11 injected into the second flow path 6 is once reduced to equalize the high-pressure air 11 in the second flow path 6. Then, the pressure is increased again so that the high-pressure air 11 can be injected from the second injection port 13 of the nozzle tip 7 communicating with the second flow path 6.

また、内管３は、その内径形状が内管３の先端部３ａにおいて段階的に先細り形成されていて、第１噴射口１２から高圧状態で尿素水１０を噴射可能な構成にしてある。   Further, the inner tube 3 is configured such that its inner diameter shape is tapered in a stepwise manner at the distal end portion 3 a of the inner tube 3, and the urea water 10 can be injected from the first injection port 12 in a high pressure state.

第１流路５に尿素水１０を注入するための尿素水（第１流体）注入口１５を備えた基端部側の第１ノズル基材９Ａと、第２流路６に高圧空気１１を注入するための高圧空気（第２流体）注入口１６を備えた先端部側の第２ノズル基材９Ｂとから構成されるノズル基部９において、内管３はその基端部３ｂにおいて第１ノズル基材９Ａ及び第２ノズル基材９Ｂに亘って貫通する第１接続孔１７に嵌合接続されているとともに、尿素水注入口１５が第１接続孔１７と一体的に形成されているので、内管３の基端部３ｂを第１接続孔１７に嵌合接続することで、第１流路５と尿素水注入口１５とが連通した状態となる。
そして、外管４はその基端部４ａにおいて第２ノズル基材９Ｂに形成された第２接続孔１８に螺合接続されているとともに、第２ノズル基材９Ｂの外周面から第２接続孔１８に臨む第２ノズル基材９Ｂの内周面に貫通する高圧空気注入口１６が形成されているので、内管３の基端部３ｂを第１接続孔１７に嵌合接続し、かつ、外管４の基端部４ａを第２接続孔１８に螺合接続することで、高圧空気注入口１６と第２流路６とが連通した状態となる。 A first nozzle base 9A on the base end side provided with urea water (first fluid) inlet 15 for injecting urea water 10 into the first flow path 5, and high-pressure air 11 into the second flow path 6. In the nozzle base 9 composed of the second nozzle base material 9B on the distal end side provided with the high-pressure air (second fluid) injection port 16 for injecting, the inner tube 3 is the first nozzle at the proximal end 3b. Since it is fitted and connected to the first connection hole 17 penetrating over the base material 9A and the second nozzle base material 9B, and the urea water injection port 15 is formed integrally with the first connection hole 17, By fitting and connecting the proximal end portion 3 b of the inner pipe 3 to the first connection hole 17, the first flow path 5 and the urea water injection port 15 are in communication with each other.
The outer tube 4 is threadedly connected to the second connection hole 18 formed in the second nozzle base material 9B at the base end portion 4a, and the second connection hole from the outer peripheral surface of the second nozzle base material 9B. Since the high-pressure air injection port 16 penetrating the inner peripheral surface of the second nozzle base material 9B facing 18 is formed, the base end portion 3b of the inner tube 3 is fitted and connected to the first connection hole 17, and By screwing and connecting the base end portion 4a of the outer tube 4 to the second connection hole 18, the high-pressure air inlet 16 and the second flow path 6 are in communication with each other.

内管３の基端部３ｂの外周面と第１接続孔１７に臨む第１ノズル基材９Ａの内周面との間に、第１シール部材である第１Ｏリング１９が２箇所に設けられ、内管３の基端部３ｂの外周面と第１接続孔１７に臨む第２ノズル基材９Ｂの内周面との間で、かつ、第２ノズル基材９Ｂの第１ノズル基材９Ａとの接当端面に、第２シール部材である第２Ｏリング２０が設けられていて、これら両Ｏリング１９，２０により、尿素水注入口１５から第１流路５に注入される尿素水１０が、第１流路５を形成する内管３の基端部３ｂの外周面と第１接続孔１７に臨むノズル基部９の内周面との間に現出する隙間を通じて、内管３の外周面と外管４の内周面との間に形成される第２流路６に浸入することを防止している。   Between the outer peripheral surface of the base end portion 3 b of the inner pipe 3 and the inner peripheral surface of the first nozzle base material 9 </ b> A facing the first connection hole 17, first O-rings 19 as first seal members are provided at two locations. The first nozzle base material 9A of the second nozzle base material 9B is between the outer peripheral surface of the base end portion 3b of the inner tube 3 and the inner peripheral surface of the second nozzle base material 9B facing the first connection hole 17. A second O-ring 20 as a second seal member is provided on the contact end surface with the urea water 10 injected into the first flow path 5 from the urea water inlet 15 by these O-rings 19 and 20. However, through the gap that appears between the outer peripheral surface of the base end portion 3 b of the inner tube 3 that forms the first flow path 5 and the inner peripheral surface of the nozzle base 9 that faces the first connection hole 17, Intrusion into the second flow path 6 formed between the outer peripheral surface and the inner peripheral surface of the outer tube 4 is prevented.

そして、このように内管３の基端部３ｂと第１接続孔１７に臨む第１ノズル基材９Ａ及び第２ノズル基材９Ｂの内周面との間に、第１Ｏリング１９及び第２Ｏリング２０を設けることで、尿素水注入口１５と第２流路６とを密閉状態で区画しながら内管３の基端部３ｂを保持することができるとともに、第１シール部材及び第２シール部材がＯリング１９，２０であるので、第１接続孔１７に内管３の基端部３ｂを嵌合接続するのに、内管３を基端部側から第１接続孔１７に挿入するだけでよく、また、メンテナンス等における内管３の脱着も引き抜くだけで済む。   Thus, the first O-ring 19 and the second O-ring are provided between the proximal end portion 3b of the inner tube 3 and the inner peripheral surfaces of the first nozzle base 9A and the second nozzle base 9B facing the first connection hole 17. By providing the ring 20, the base end portion 3b of the inner tube 3 can be held while the urea water inlet 15 and the second flow path 6 are partitioned in a sealed state, and the first seal member and the second seal are also provided. Since the members are O-rings 19 and 20, the inner tube 3 is inserted into the first connection hole 17 from the proximal end side in order to fit and connect the proximal end portion 3 b of the inner tube 3 to the first connection hole 17. It is only necessary to pull out the inner tube 3 for maintenance or the like.

ノズル基部９を構成する第１ノズル基材９Ａと第２ノズル基材９Ｂとの接当端面において、第２ノズル基材９Ｂに、第１接続孔１７に臨む第２ノズル基材９Ｂの内周面から第２ノズル基材９Ｂの外周面に達する２つの溝２１が径方向に形成されていて、第１ノズル基材９Ａと第２ノズル基材９Ｂとを接当させたとき、これら溝２１が内管３の外周面と第１接続孔１７を臨むノズル基部９の内周面との間を外部に開放する連通路Ｐとなる。   The inner circumference of the second nozzle base material 9B facing the first connection hole 17 on the second nozzle base material 9B at the contact end face between the first nozzle base material 9A and the second nozzle base material 9B constituting the nozzle base 9 Two grooves 21 reaching the outer peripheral surface of the second nozzle base material 9B from the surface are formed in the radial direction, and when the first nozzle base material 9A and the second nozzle base material 9B are brought into contact with each other, the grooves 21 Is a communication path P that opens to the outside between the outer peripheral surface of the inner tube 3 and the inner peripheral surface of the nozzle base 9 facing the first connection hole 17.

第１ノズル基材９Ａと第２ノズル基材９Ｂは、接当させた状態で２本のボルト２２によって連結固定されて、ノズル基部９を構成している。   9 A of 1st nozzle base materials and 9B of 2nd nozzle base materials are connected and fixed by the two volt | bolts 22 in the state contacted, and comprise the nozzle base 9. FIG.

このように構成したノズル２において、第１Ｏリング１９又は第２Ｏリング２０が老朽化等により破損してそのシール性が低下したときに、特に両流体１０，１１の流れ方向において注入口１５が上流側にある尿素水１０が、その内管３の外周面と第１接続孔１７を臨むノズル基部９の内周面との間の隙間Ｓに漏洩してしまう畏れがあるが、連通路Ｐが形成されているため、尿素水１０は抵抗の大きい高圧の第２流路６側に浸入することなく、抵抗の小さい連通路Ｐを通じて外部に排出される。   In the nozzle 2 configured in this way, when the first O-ring 19 or the second O-ring 20 is damaged due to aging or the like and its sealing performance is lowered, the inlet 15 is located upstream in the flow direction of both fluids 10 and 11. The urea water 10 on the side may leak into the gap S between the outer peripheral surface of the inner tube 3 and the inner peripheral surface of the nozzle base 9 facing the first connection hole 17. Therefore, the urea water 10 is discharged outside through the communication path P with low resistance without entering the high-pressure second flow path 6 side with high resistance.

排ガスＧに対する尿素水１０の噴射において、尿素水１０を霧化されていない状態で噴射すると、エンジンＥから排出される排ガスＧにより高温になっている排気管１に、霧化されていない尿素水１０がかかることで排気管１に熱応力が生じ、この熱応力によって排気管１に歪みが起きて 破損してしまう畏れがあるため、排ガスＧ中の窒素化合物と容易に化学反応を起こさせるために、尿素水１０は十分に霧化された状態で噴射されなければならない。
しかし、連通路Ｐを設けることで、尿素水１０が、第１Ｏリング１９又は第２Ｏリング２０におけるシール性の低下により、その内管３の外周面と第１接続孔１７を臨むノズル基部９の内周面との間の隙間Ｓを介して高圧空気１１が流れる第２流路６に浸入することを防止できるので、尿素水１０の尿素が第２流路６内において析出することを防ぎ、析出尿素による目詰まりで第２流路６の高圧空気１１の流れの妨げを回避することができる。
そして、第２流路６において析出尿素による目詰まりが生じないので、第１噴射口１２から噴射される尿素水１０を、第１噴射口１２の周囲に形成された第２噴射口１３から噴射される高圧空気１１で十分に微粒化させた霧化状態で排ガスＧに対して噴射することができ、これによって、排気管１の破損も効果的に防止することができる。 In the injection of urea water 10 to the exhaust gas G, if the urea water 10 is injected in a state where it is not atomized, the urea water that has not been atomized is introduced into the exhaust pipe 1 that is heated by the exhaust gas G discharged from the engine E. 10 causes a thermal stress in the exhaust pipe 1, and this thermal stress may cause the exhaust pipe 1 to be distorted and damaged, so that it easily causes a chemical reaction with the nitrogen compound in the exhaust gas G. In addition, the urea water 10 must be jetted in a sufficiently atomized state.
However, the provision of the communication path P allows the urea water 10 to flow through the nozzle base portion 9 facing the outer peripheral surface of the inner pipe 3 and the first connection hole 17 due to a decrease in sealing performance in the first O ring 19 or the second O ring 20. Since it is possible to prevent the high pressure air 11 from entering the second flow path 6 through the gap S between the inner peripheral surface and the urea of the urea water 10 is prevented from being precipitated in the second flow path 6, It is possible to avoid obstruction of the flow of the high-pressure air 11 in the second flow path 6 due to clogging with precipitated urea.
Since clogging due to precipitated urea does not occur in the second flow path 6, the urea water 10 injected from the first injection port 12 is injected from the second injection port 13 formed around the first injection port 12. It is possible to inject the exhaust gas G in an atomized state sufficiently atomized with the high-pressure air 11 to be performed, and thus it is possible to effectively prevent the exhaust pipe 1 from being damaged.

また、連通路Ｐを第２ノズル基材９Ｂの第１ノズル基材９Ａとの接当端面に溝２１を設けて形成してあるので、連通路Ｐにおいて尿素水１０の尿素が析出して溜まっても、ノズル基部９を第１ノズル基材９Ａ及び第２ノズル基材９Ｂに分割して、溝２１に溜まった析出尿素を掻き出し洗浄することができるので、ノズル２の洗浄作業を容易かつ迅速に行うことができる。   Further, since the communication path P is formed by providing the groove 21 on the contact end surface of the second nozzle base material 9B with the first nozzle base material 9A, urea in the urea water 10 is deposited and collected in the communication path P. However, since the nozzle base 9 can be divided into the first nozzle base material 9A and the second nozzle base material 9B and the precipitated urea accumulated in the groove 21 can be scraped and cleaned, the cleaning operation of the nozzle 2 can be performed easily and quickly. Can be done.

２３はノズル先端部７の第１噴射口１２から噴射する尿素水１０を、ノズル基部９の第１ノズル基材９Ａに形成された尿素水注入口１５に加圧した状態で注入する尿素水注入装置で、２４はノズル先端部７の第２噴射口１３から噴射する高圧空気１１を、ノズル基部９の第２ノズル基材９Ｂに形成された高圧空気注入口１６に注入する高圧空気注入装置である。   The urea water injection 23 injects urea water 10 injected from the first injection port 12 of the nozzle tip 7 into the urea water injection port 15 formed in the first nozzle base material 9A of the nozzle base 9 in a pressurized state. A high-pressure air injection device 24 injects high-pressure air 11 injected from the second injection port 13 of the nozzle tip 7 into a high-pressure air injection port 16 formed in the second nozzle base material 9B of the nozzle base 9. is there.

〔別実施形態〕
次に別実施形態を列記する。 [Another embodiment]
Next, another embodiment will be listed.

上記実施形態では、本発明の二流体ノズル構造に構成されたノズル２をエンジンＥから排出される排ガスＧ中の窒素化合物を還元するための脱硝還元剤を噴射するのに使用したが、本発明の二流体ノズル構造はこれに限らず、種々の装置に使用することができる。   In the above embodiment, the nozzle 2 configured in the two-fluid nozzle structure of the present invention is used to inject the denitration reducing agent for reducing the nitrogen compounds in the exhaust gas G discharged from the engine E. The two-fluid nozzle structure is not limited to this, and can be used for various devices.

そして、第1流体を脱硝還元剤である尿素水１０とし、第２流体を高圧空気１１としたが、第１流体及び第２流体はこれらに限るものではなく、また、流体としては種々の液体、気体、粉体（微粒状固体）、固液混合体、気液混合体、固気混合体、固気液混合体のいずれのものであってもよい。   The first fluid is urea water 10 that is a denitration reducing agent, and the second fluid is high-pressure air 11. However, the first fluid and the second fluid are not limited to these, and various fluids may be used as the fluid. , Gas, powder (particulate solid), solid-liquid mixture, gas-liquid mixture, solid-gas mixture, and solid-gas-liquid mixture may be used.

上記実施形態では、第１噴射口１２と内管３とが一体的に形成されている構成であったが、これに限るものではなく、これらが別体で形成されていても構わない。   In the above embodiment, the first injection port 12 and the inner tube 3 are integrally formed. However, the present invention is not limited to this, and they may be formed separately.

上記実施形態では、ノズル基部９を第１ノズル基材９Ａと第２ノズル基材９Ｂとの２分割構成にしていたが、ノズル基部９は１部材から構成されたものであってもよく、また、３部材や４部材の多数の部材から構成されるものであってもよい。   In the above embodiment, the nozzle base 9 has a two-part configuration of the first nozzle base 9A and the second nozzle base 9B. However, the nozzle base 9 may be composed of one member, It may be composed of a large number of three or four members.

上記実施形態では、第２ノズル基材９Ｂの第１ノズル基材９Ａとの接当端面に溝２１を形成することで連通路Ｐを形成していたが、連通路Ｐは、第１シール部材と第２シール部材との間に形成されるものであれば、どのように形成しても構わない。   In the above embodiment, the communication path P is formed by forming the groove 21 on the contact end surface of the second nozzle base material 9B with the first nozzle base material 9A, but the communication path P is the first seal member. As long as it is formed between the second seal member and the second seal member, it may be formed in any manner.

本発明の二流体ノズル構造は、エンジン等の燃焼装置から排出される窒素化合物を含有する排ガスのガス洗浄に使用するほか、塗装、コーティング、表面処理、加湿、湿潤、殺菌・消毒、消臭、冷却、防塵、静電気防止等、二つの流体を外部混合させて噴射する必要がある用途に使用することができる。   The two-fluid nozzle structure of the present invention is used for gas cleaning of exhaust gas containing nitrogen compounds discharged from combustion devices such as engines, as well as painting, coating, surface treatment, humidification, wetting, sterilization / disinfection, deodorization, It can be used for applications where two fluids need to be externally mixed and sprayed, such as cooling, dustproofing and antistatic.

本発明の二流体ノズル構造のノズルを利用した燃焼装置の構造図Structure diagram of combustion apparatus using nozzle of two-fluid nozzle structure ノズルの縦端面図Nozzle vertical end view ノズルの縦端面図Nozzle vertical end view 第２ノズル基材の第１ノズル基材との接当端面における横断面図Cross-sectional view of the contact end surface of the second nozzle base material with the first nozzle base material ノズル先端部の拡大横断面図Enlarged cross-sectional view of the nozzle tip ノズルの外観図External view of nozzle

符号の説明Explanation of symbols

１ 対象空間又は対象物
３ 内管
３ｂ 内管の基端部
４ 外管
４ａ 外管の基端部
５ 第１流路
６ 第２流路
７ ノズル先端部
８ ノズル中間部
９ ノズル基部
９Ａ 第１ノズル基材
９Ｂ 第２ノズル基材
１０ 第１流体
１１ 第２流体
１２ 第１噴射口
１３ 第２噴射口
１５ 第１流体注入口
１６ 第２流体注入口
１７ 第１接続孔
１８ 第２接続孔
１９ 第１シール部材
２０ 第２シール部材
２１ 溝
Ｐ 連通路

DESCRIPTION OF SYMBOLS 1 Object space or object 3 Inner pipe 3b Base end part 4 of inner pipe Outer pipe 4a Base end part 5 of outer pipe 1st flow path 6 2nd flow path 7 Nozzle front end part 8 Nozzle intermediate part 9 Nozzle base part 9A 1st Nozzle base material 9B Second nozzle base material 10 First fluid 11 Second fluid 12 First injection port 13 Second injection port 15 First fluid injection port 16 Second fluid injection port 17 First connection hole 18 Second connection hole 19 First seal member 20 Second seal member 21 Groove P Communication path

Claims (6)

対象空間又は対象物に対し第１流体を噴射する第１噴射口と、その第１噴射口の周囲において、噴射された第１流体と混合させる第２流体を噴射する第２噴射口とを備えたノズル先端部と、
前記第１噴射口に連通する第１流路を形成してある内管と、これの外周面との間に前記第２噴射口に連通する第２流路を形成する外管とを備えたノズル中間部と、
前記第１流路に第１流体を供給するための第１流体注入口と、前記第２流路に第２流体を供給するための第２流体注入口とを備えたノズル基部とからなる二流体ノズル構造であって、
前記ノズル基部に、第１流体注入口に連通する状態で内管の基端部が接続される第１接続孔と、第２流体注入口に連通する状態で外管の基端部が接続される第２接続孔とが連通形成されているとともに、
内管の基端部側の外周面と第１接続孔に臨むノズル基部の内周面との間に、第１流体の前記第２流路側への進入を防止するための第１シール部材と第２流体の前記第１流路側への進入を防止するための第２シール部材とが設けられ、それら第１シール部材と第２シール部材との間に、内管の外周面と前記第１接続孔に臨むノズル基部の内周面との間を外部に開放する連通路が形成されてある二流体ノズル構造。 A first ejection port that ejects a first fluid to a target space or an object, and a second ejection port that ejects a second fluid to be mixed with the ejected first fluid around the first ejection port. Nozzle tip,
An inner pipe that forms a first flow path that communicates with the first injection port, and an outer pipe that forms a second flow path that communicates with the second injection port between the inner pipe and the outer peripheral surface thereof. Nozzle middle part,
A nozzle base having a first fluid inlet for supplying a first fluid to the first flow path and a second fluid inlet for supplying a second fluid to the second flow path; A fluid nozzle structure,
The nozzle base is connected to the first connection hole to which the base end of the inner pipe is connected in communication with the first fluid inlet, and to the base end of the outer pipe in communication with the second fluid inlet. A second connection hole is formed in communication with the second connection hole,
A first seal member for preventing the first fluid from entering the second flow path side between the outer peripheral surface on the base end side of the inner pipe and the inner peripheral surface of the nozzle base facing the first connection hole; A second seal member for preventing the second fluid from entering the first flow path side is provided, and between the first seal member and the second seal member, the outer peripheral surface of the inner tube and the first seal member are provided. A two-fluid nozzle structure in which a communication path is formed to open to the outside between an inner peripheral surface of a nozzle base facing a connection hole. 前記連通路が、第１接続孔に臨むノズル基部の内周面から径方向外方でノズル基部の外面に達するように形成されてある請求項１記載の二流体ノズル構造。   The two-fluid nozzle structure according to claim 1, wherein the communication path is formed so as to reach the outer surface of the nozzle base radially outward from the inner peripheral surface of the nozzle base facing the first connection hole. 少なくとも第１流体注入口を備えた第１ノズル基材と第２流体注入口を備えた第２ノズル基材との２部材から構成されるノズル基部において、第１ノズル基材側に第１シール部材が装着され、第２ノズル基材側に第２シール部材が装着されているとともに、
第１ノズル基材と第２ノズル基材との接当端面の少なくとも一方側に、前記連通路となる溝が形成されている請求項１又は２記載の二流体ノズル構造。 In a nozzle base composed of at least a first nozzle substrate having a first fluid inlet and a second nozzle substrate having a second fluid inlet, a first seal is provided on the first nozzle substrate side. The member is mounted, and the second seal member is mounted on the second nozzle substrate side,
The two-fluid nozzle structure according to claim 1 or 2, wherein a groove serving as the communication path is formed on at least one side of a contact end face between the first nozzle base and the second nozzle base. 前記第１シール部材又は第２シール部材が、第１ノズル基材と第２ノズル基材との接当端面に配設されてある請求項３記載の二流体ノズル構造。   The two-fluid nozzle structure according to claim 3, wherein the first seal member or the second seal member is disposed on a contact end surface between the first nozzle base and the second nozzle base. 前記第１シール部材及び第２シール部材が、Ｏリングである請求項１〜４のいずれか１項に記載の二流体ノズル構造。   The two-fluid nozzle structure according to any one of claims 1 to 4, wherein the first seal member and the second seal member are O-rings. 前記第１流体及び前記第２流体のいずれか一方を液体とし、他方を気体にすることで、液体を気体により微粒化された霧化状態で噴射可能に構成されている請求項１〜５のいずれか１項に記載の二流体ノズル構造。

The liquid according to claim 1, wherein one of the first fluid and the second fluid is a liquid and the other is a gas so that the liquid can be ejected in an atomized state atomized by the gas. The two-fluid nozzle structure according to any one of the above.

JP2004048035A 2004-02-24 2004-02-24 Two-fluid nozzle structure Expired - Fee Related JP4408722B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2004048035A JP4408722B2 (en) 2004-02-24 2004-02-24 Two-fluid nozzle structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2004048035A JP4408722B2 (en) 2004-02-24 2004-02-24 Two-fluid nozzle structure

Publications (2)

Publication Number Publication Date
JP2005238019A true JP2005238019A (en) 2005-09-08
JP4408722B2 JP4408722B2 (en) 2010-02-03

Family

ID=35020319

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2004048035A Expired - Fee Related JP4408722B2 (en) 2004-02-24 2004-02-24 Two-fluid nozzle structure

Country Status (1)

Country Link
JP (1) JP4408722B2 (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101164062B1 (en) * 2005-12-23 2012-07-12 주식회사 케이씨텍 Two-fluid jet module for cleaning substrate and cleaning device using thereof
KR101363330B1 (en) * 2012-04-09 2014-02-14 김재준 Nozzle unit
KR101563093B1 (en) * 2014-12-12 2015-10-26 성균관대학교산학협력단 Double injection nozzle for improving injection distance of high viscosty fluid
CN107970764A (en) * 2017-11-27 2018-05-01 常州五王电机有限公司 A kind of SNCR denitrification spray gun
CN107999296A (en) * 2017-11-27 2018-05-08 常州五王电机有限公司 The resistance to thermic lance of SNCR denitration two-fluid voltage stabilizing
CN107999295A (en) * 2017-11-27 2018-05-08 常州五王电机有限公司 The SNCR denitrification spray gun that can quickly cool down
CN108014625A (en) * 2017-11-27 2018-05-11 常州五王电机有限公司 SNCR denitration two-fluid voltage stabilizing spray gun
CN115427608A (en) * 2021-03-08 2022-12-02 应普技株式会社 Spray nozzle device

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101164062B1 (en) * 2005-12-23 2012-07-12 주식회사 케이씨텍 Two-fluid jet module for cleaning substrate and cleaning device using thereof
KR101363330B1 (en) * 2012-04-09 2014-02-14 김재준 Nozzle unit
KR101563093B1 (en) * 2014-12-12 2015-10-26 성균관대학교산학협력단 Double injection nozzle for improving injection distance of high viscosty fluid
CN107970764A (en) * 2017-11-27 2018-05-01 常州五王电机有限公司 A kind of SNCR denitrification spray gun
CN107999296A (en) * 2017-11-27 2018-05-08 常州五王电机有限公司 The resistance to thermic lance of SNCR denitration two-fluid voltage stabilizing
CN107999295A (en) * 2017-11-27 2018-05-08 常州五王电机有限公司 The SNCR denitrification spray gun that can quickly cool down
CN108014625A (en) * 2017-11-27 2018-05-11 常州五王电机有限公司 SNCR denitration two-fluid voltage stabilizing spray gun
CN115427608A (en) * 2021-03-08 2022-12-02 应普技株式会社 Spray nozzle device

Also Published As

Publication number Publication date
JP4408722B2 (en) 2010-02-03

Similar Documents

Publication Publication Date Title
US6578777B2 (en) Low pressure spray nozzle
JP4408722B2 (en) Two-fluid nozzle structure
US5873237A (en) Atomizing dual fuel nozzle for a combustion turbine
JP4653055B2 (en) Nozzle for powder injection device for dental treatment
US9333518B2 (en) Multipoint injectors
US9958152B2 (en) Multi-functional fuel nozzle with an atomizer array
US8690080B2 (en) Compact high flow pressure atomizers
US20090308949A1 (en) Rotary atomizer head, rotary atomizer painting device, rotary atomization painting method
JP6784386B2 (en) Three-fluid nozzle and spraying method using the three-fluid nozzle
US10132240B2 (en) Multi-functional fuel nozzle with a dual-orifice atomizer
RU2007121791A (en) COAXIAL FEEDING SYSTEM
JP4973841B2 (en) Two-fluid injection nozzle
JP5833426B2 (en) End contact type mechanical seal
TWI269667B (en) Nozzle device and nozzle member
JP4545040B2 (en) Blast nozzle and blast gun equipped with the same
JP3980821B2 (en) Gas injection head and CVD apparatus
JP2009119352A (en) Spray nozzle
JP2006224205A (en) Powder injection nozzle device
KR100969359B1 (en) Apparatus for jetting fluid
JP2004050122A (en) Nozzle
WO2020150294A1 (en) Reductant nozzle
JP2004008911A (en) Washing apparatus
JP5685468B2 (en) Fluid atomizer
CN218872551U (en) Multi-stage atomizing spray head
JP2006167531A (en) Spraying nozzle

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20070126

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20091021

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20091029

A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20091110

R150 Certificate of patent or registration of utility model

Free format text: JAPANESE INTERMEDIATE CODE: R150

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20121120

Year of fee payment: 3

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20121120

Year of fee payment: 3

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20151120

Year of fee payment: 6

LAPS Cancellation because of no payment of annual fees