CN110594065A - Centrifugal nozzle device capable of being disassembled and assembled in sections - Google Patents
Centrifugal nozzle device capable of being disassembled and assembled in sections Download PDFInfo
- Publication number
- CN110594065A CN110594065A CN201910838423.3A CN201910838423A CN110594065A CN 110594065 A CN110594065 A CN 110594065A CN 201910838423 A CN201910838423 A CN 201910838423A CN 110594065 A CN110594065 A CN 110594065A
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- China
- Prior art keywords
- nozzle
- contraction
- cyclone
- rotational flow
- section
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- 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.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
- F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
- F02M61/168—Assembling; Disassembling; Manufacturing; Adjusting
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
- F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
- F02M61/18—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for
- F02M61/1806—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for characterised by the arrangement of discharge orifices, e.g. orientation or size
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Nozzles For Spraying Of Liquid Fuel (AREA)
Abstract
The invention discloses a centrifugal nozzle device capable of being disassembled and assembled in sections, which comprises a connecting pipeline part, a rotational flow part and a contraction part, wherein the upstream of the connecting pipeline part is connected with an oil pipeline by using fine threads; the upper reaches of the rotational flow part are connected with the pipeline part, and the lower reaches of the rotational flow part are connected with the contraction part by fine threads; the upstream of the contraction part is a rotational flow part, and the downstream of the contraction part is a fog field. The device can realize convenient replacement of each part of the centrifugal nozzle, the related steps and methods are mature, and the reliability can be ensured.
Description
Technical Field
The invention relates to a novel centrifugal nozzle device capable of being disassembled and assembled in sections, which can be used for replacing nozzle structures such as tangential holes, cyclone chambers, contraction sections, nozzles and the like with different geometric parameters at will. Belongs to the technical field of nozzle application.
Background
The nozzle is widely applied to civil and industrial fields, such as spray drying and spray dedusting in industry, spray irrigation in agriculture, spraying agent in medicine, and high-pressure injection gasoline engine in automobile industry, and the nozzle is often used as a core part for tissue combustion in an engine combustion chamber in the aerospace field. The centrifugal nozzle is widely researched and applied to thermal equipment such as aeroengines, liquid rocket engines, gas turbines and internal combustion engines, has the characteristics of simple structure, low atomization energy consumption, reliable operation, excellent performance and the like, and is beneficial to improving the combustion efficiency because the liquid formed after the primary crushing is uniformly distributed.
Most of the existing centrifugal nozzles are in interference fit, and are inconvenient to disassemble and assemble. The nozzle device which can be disassembled and replaced in sections is used, so that the atomization effect and the dynamic characteristic of the centrifugal nozzle can be quickly adjusted, and the nozzle device is suitable for various complex working environments in a combustion chamber. The method can be applied to actual engineering, provides a convenient method in the aspects of nozzle development and atomization effect test experiments of different structures, can achieve the purpose of saving material cost, and has a certain application prospect.
In addition, because kerosene is not sufficiently combusted in the engine combustion chamber, the nozzle is easy to generate carbon deposition, and the carbon deposition can occur when the nozzle works in a stable state and can also occur when the nozzle works in a starting or stopping state. Once the nozzle is seriously blocked by carbon deposition, the fuel injection quality of the nozzle, namely the size and the size distribution of liquid mist, the fuel flow, the spray cone angle and the uniformity of the axial distribution of the fuel, are all deteriorated, which plays a crucial role in the combustion efficiency, the service life of hot parts and the reliability and the safety of the whole engine, and is easy to cause serious flight safety accidents. The conventional centrifugal nozzle is not easy to disassemble, assemble and replace, the materials are wasted due to the overall disassembly and replacement, the centrifugal nozzle device capable of being disassembled and assembled in sections is developed, nozzle parts can be replaced rapidly, and the influence of carbon deposition on the overall structure of the nozzle is reduced.
Disclosure of Invention
The invention designs a centrifugal nozzle device which can be disassembled and replaced in sections on the premise of not influencing the normal work of the nozzle. The centrifugal nozzle can realize quick replacement of conventional nozzle structures such as a tangential hole, a swirl chamber, a contraction section and a nozzle, so that the aims of adjusting the atomization effect and the dynamic characteristic of the centrifugal nozzle are fulfilled.
The invention improves the connection mode of each part of the centrifugal nozzle, and has the following main structure:
a centrifugal nozzle device capable of being disassembled and assembled in sections comprises a connecting pipeline part, a rotational flow part and a contraction part, wherein the upstream of the connecting pipeline part is connected with an oil pipeline by using fine threads, the downstream of the connecting pipeline part is connected with the rotational flow part by using the fine threads, and the connecting pipeline part is used for communicating a nozzle with the oil pipeline; the upper reaches of the rotational flow part are connected with the pipeline part, and the lower reaches of the rotational flow part are connected with the contraction part by fine threads; the upstream of the contraction part is a rotational flow part, and the downstream of the contraction part is a fog field.
The main body area that the fuel of the centrifugal nozzle flows includes tangential hole 1, swirl chamber 2, convergent section 3 and spout 4, and tangential hole 1 and swirl chamber 2 are the whirl part, and convergent section 3 and spout 4 are the convergent part. In order to prevent oil leakage, the connection pipe section, the cyclone section and the contraction section are connected by using fine threads, and the threaded connection can be wound with a raw tape if necessary.
Tangential hole 1 sets up in whirl part apart from top 5mm department, and the diameter is 1.5mm, and length is 2mm, and 2 internal diameters of cyclone chamber are 5mm, and the external diameter is 9mm, and length is 40mm, and 3 shrinkage factor of shrink section are 1 (the shrinkage factor is the length ratio width of inside shrink department), and the spout diameter is 3mm, and length is 5 mm. The length of the cyclone section is 35mm, the inner diameter is 9mm, and the outer diameter is 15 mm.
After liquid flows into the connecting pipeline part from the upstream, the liquid can enter the nozzle through the tangential holes 1, meanwhile, the liquid can generate tangential velocity and then enters the cyclone chamber 2 in the cyclone part to form cyclone, after the contraction section 3 at the downstream of the cyclone part is accelerated, the liquid can flow out from the nozzle 4 to form a liquid film, and under the influence of aerodynamic force and liquid surface tension, the liquid film is split to form a mist field.
The position, the number, the size of tangential hole 1 and the cross-sectional area, the length of swirl chamber 2 in the whirl portion, the shrinkage factor and the spout 4 diameter, the length of the internal contraction section 3 of contraction section in the contraction portion, these geometric parameters can be revised as required, can control the atomizing effect through the size of controlling these parameters.
In order to facilitate the disassembly and assembly, the outer surface of each part is processed into a hexagonal prism.
Compared with the prior art, the invention has the following advantages:
1. through nozzle structures such as the tangential hole, swirl chamber, shrink section and spout of changing different geometric dimensions, can change atomizing characteristics such as liquid film thickness, atomizing cone angle and liquid fog size to improve in order to adapt to various complicated combustion chamber environment to the spraying effect.
2. The centrifugal nozzle can be quickly replaced, a convenient experiment method can be provided for development of nozzles with different structures and atomization effect test experiments, and meanwhile, the material cost is saved.
3. When the nozzle is affected by the carbon deposition, foreign matters are attached to the surface of the nozzle, and the carbon deposition can be removed by replacing the contraction part, so that the rapid maintenance of the combustion chamber is realized.
The specific working flow of the device is as follows: and closing the power device to stop oil supply, opening equipment such as a combustion chamber and the like, and after the nozzle is cooled to room temperature, screwing off the cyclone chamber section or the contraction section needing to be replaced in the nozzle from the joint, so that the replacement can be completed. And then oil is introduced, the replaced nozzle part is checked for leakage, and the nozzle part can be restarted after error is not found.
The invention can realize convenient replacement of each part of the centrifugal nozzle, the related steps are mature, and the reliability can be ensured.
Drawings
FIG. 1 is a schematic view of a connection pipeline part of a centrifugal nozzle device capable of being disassembled and assembled in sections.
FIG. 2 is a schematic view of a swirl portion of a centrifugal nozzle apparatus of the present invention, which is capable of being disassembled and assembled in sections.
FIG. 3 is a schematic view of a converging portion of a centrifugal nozzle assembly of the present invention, which is capable of being disassembled and assembled in segments.
FIG. 4 is a schematic view of the overall structure of a centrifugal nozzle device capable of being disassembled and assembled in sections.
In the figure: 1 tangential hole, 2 cyclone chambers, 3 contraction sections and 4 nozzles.
Detailed Description
The function and operation of the centrifugal nozzle device capable of being disassembled and assembled in sections will be further described in detail with reference to the accompanying drawings.
This centrifugal nozzle device can realize the convenient change of connecting line part, whirl part and constriction part triplex to reach the purpose to the swift adjustment of centrifugal nozzle atomization effect and dynamic characteristic, this function not only can be applied to in the middle of the engineering of reality, also can be used to in the test experiment to the nozzle development of different geometric parameters and atomization effect, can realize material saving cost's purpose. The invention is beneficial to convenient maintenance of the engine combustion chamber, and has important significance for reducing the damage of carbon deposition to the nozzle and the engine combustion chamber.
The centrifugal nozzle device comprises a connecting pipeline part, a rotational flow part and a contraction part, wherein the connecting pipeline part is mainly used for communicating a nozzle with an oil way, and the rotational flow part and the contraction part form a main structure of fuel oil flowing of the centrifugal nozzle: tangential hole 1, swirl chamber 2, shrink section 3, spout 4, wherein the swirl chamber section includes tangential hole 1 and swirl chamber 2, and the shrink part includes shrink section 3 and spout 4. The working process of the device is as follows: before the nozzle needs to be replaced in actual work, the starting device is firstly closed to stop oil supply, equipment such as a combustion chamber is opened, after the nozzle is cooled to room temperature, the whole part of the nozzle does not need to be replaced, the rotational flow part or the contraction part in the nozzle needing to be replaced in the nozzle can be directly screwed off from the connection part, the purpose of quick replacement can be achieved, then oil is introduced, whether the replaced nozzle part leaks or not is checked, and the nozzle can be restarted at any time after the nozzle is checked to be correct.
Claims (6)
1. A centrifugal nozzle device capable of being disassembled and assembled in sections is characterized in that: the device comprises a connecting pipeline part, a rotational flow part and a contraction part, wherein the upstream of the connecting pipeline part is connected with an oil pipeline by using fine threads, the downstream of the connecting pipeline part is connected with the rotational flow part by using the fine threads, and the connecting pipeline part is used for communicating a nozzle with an oil way; the upper reaches of the rotational flow part are connected with the pipeline part, and the lower reaches of the rotational flow part are connected with the contraction part by fine threads; the upstream of the contraction part is a rotational flow part, and the downstream of the contraction part is a fog field.
2. A segment mountable and demountable centrifugal nozzle apparatus according to claim 1, wherein: the main area of fuel flow of the centrifugal nozzle comprises a tangential hole (1), a swirl chamber (2), a contraction section (3) and a nozzle (4), wherein the tangential hole (1) and the swirl chamber (2) are swirl parts, and the contraction section (3) and the nozzle (4) are contraction parts; in order to prevent oil leakage, the connection pipe section, the cyclone section and the contraction section are connected by using fine threads, and the threaded connection can be wound with a raw tape if necessary.
3. A segment mountable and demountable centrifugal nozzle apparatus according to claim 2, wherein: the tangential hole (1) is arranged at the position 5mm away from the top of the rotational flow part, the diameter is 1.5mm, the length is 2mm, the inner diameter of the rotational flow chamber (2) is 5mm, the outer diameter is 9mm, the length is 40mm, the contraction coefficient of the contraction section (3) is 1, the diameter of the nozzle is 3mm, and the length is 5 mm; the length of the cyclone section is 35mm, the inner diameter is 9mm, and the outer diameter is 15 mm.
4. A segment mountable and demountable centrifugal nozzle apparatus according to claim 2, wherein: after the liquid flows into the connecting pipeline part from the upstream, the liquid can enter the nozzle through the tangential holes (1), meanwhile, the liquid can generate tangential velocity and then enters the cyclone chamber (2) in the cyclone part to form cyclone, after the contraction section (3) at the downstream of the cyclone part is accelerated, the liquid can flow out from the nozzle (4) to form a liquid film, and under the influence of aerodynamic force and liquid surface tension, the liquid film is split to form a mist field.
5. A segment mountable and demountable centrifugal nozzle apparatus according to claim 2, wherein: the position, the number and the size of the tangential holes (1) in the cyclone part, the cross-sectional area and the length of the cyclone chamber (2), the contraction coefficient of the contraction section (3) in the contraction part, the diameter and the length of the nozzle (4) are modified according to requirements, and the atomization effect is controlled by controlling the size of the parameters.
6. A segment mountable and demountable centrifugal nozzle apparatus according to claim 2, wherein: the outer surfaces of the tangential hole (1), the cyclone chamber (2), the contraction section (3) and the nozzle (4) are all processed into hexagonal prisms.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910838423.3A CN110594065A (en) | 2019-09-05 | 2019-09-05 | Centrifugal nozzle device capable of being disassembled and assembled in sections |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910838423.3A CN110594065A (en) | 2019-09-05 | 2019-09-05 | Centrifugal nozzle device capable of being disassembled and assembled in sections |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110594065A true CN110594065A (en) | 2019-12-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910838423.3A Pending CN110594065A (en) | 2019-09-05 | 2019-09-05 | Centrifugal nozzle device capable of being disassembled and assembled in sections |
Country Status (1)
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| CN (1) | CN110594065A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111520711A (en) * | 2020-03-17 | 2020-08-11 | 西北工业大学 | Structure for improving carbon deposition of centrifugal nozzle |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2169035Y (en) * | 1993-07-01 | 1994-06-15 | 鲍侃 | Atomized fuel oil nozzle |
| CN103100170A (en) * | 2011-11-10 | 2013-05-15 | 浙江港龙消防机械有限公司 | Spray nozzle |
| CN204134760U (en) * | 2014-10-13 | 2015-02-04 | 西南石油大学 | A kind of nozzle of natural gas drag reducer atomising device |
| CN204320525U (en) * | 2014-11-21 | 2015-05-13 | 浙江爱力浦科技股份有限公司 | A kind of spiral-flow type note alcohol atomizer |
| CN206398761U (en) * | 2016-12-14 | 2017-08-11 | 中国燃气涡轮研究院 | Improve the fuel nozzle of fuel feeding scope |
| CN207076573U (en) * | 2016-11-30 | 2018-03-09 | 福建天广消防有限公司 | A kind of pressure type foam spray nozzle |
-
2019
- 2019-09-05 CN CN201910838423.3A patent/CN110594065A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2169035Y (en) * | 1993-07-01 | 1994-06-15 | 鲍侃 | Atomized fuel oil nozzle |
| CN103100170A (en) * | 2011-11-10 | 2013-05-15 | 浙江港龙消防机械有限公司 | Spray nozzle |
| CN204134760U (en) * | 2014-10-13 | 2015-02-04 | 西南石油大学 | A kind of nozzle of natural gas drag reducer atomising device |
| CN204320525U (en) * | 2014-11-21 | 2015-05-13 | 浙江爱力浦科技股份有限公司 | A kind of spiral-flow type note alcohol atomizer |
| CN207076573U (en) * | 2016-11-30 | 2018-03-09 | 福建天广消防有限公司 | A kind of pressure type foam spray nozzle |
| CN206398761U (en) * | 2016-12-14 | 2017-08-11 | 中国燃气涡轮研究院 | Improve the fuel nozzle of fuel feeding scope |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111520711A (en) * | 2020-03-17 | 2020-08-11 | 西北工业大学 | Structure for improving carbon deposition of centrifugal nozzle |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20191220 |
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| RJ01 | Rejection of invention patent application after publication |