阅读说明：本技术 一种改善离心式喷嘴积碳的结构 (Structure for improving carbon deposition of centrifugal nozzle ) 是由 张群 胡凡 程祥旺 李小龙 于 2020-03-17 设计创作，主要内容包括：本发明公开了一种改善离心式喷嘴积碳的结构。该结构在传统离心式喷嘴的切向孔和旋流室之间加入一个管道,用于引入冷却空气来冷却离心式喷嘴及相关组件,并且在旋流室内加一个刮碳环,可以将喷嘴内部产生的积碳用刮碳环的刃口刮除,阻止了离心式喷嘴积碳的堆积。本发明可以有效改善离心式喷嘴的结焦积碳问题,提高燃烧室的燃烧效率,结构简单,加工方便。(The invention discloses a structure for improving carbon deposition of a centrifugal nozzle. According to the structure, a pipeline is added between a tangential hole and a swirl chamber of a traditional centrifugal nozzle and used for introducing cooling air to cool the centrifugal nozzle and related components, and a carbon scraping ring is added in the swirl chamber, so that carbon deposition generated in the nozzle can be scraped by a cutting edge of the carbon scraping ring, and the carbon deposition accumulation of the centrifugal nozzle is prevented. The invention can effectively improve the coking and carbon deposition problems of the centrifugal nozzle, improves the combustion efficiency of the combustion chamber, and has simple structure and convenient processing.)

1. The utility model provides a structure of improvement centrifugal nozzle carbon deposit which characterized in that: the structure is mainly characterized in that a pipeline is added between a tangential hole and a swirl chamber of a traditional centrifugal nozzle, and a carbon scraping ring is added in the swirl chamber.

2. A structure for improving carbon deposition in a centrifugal nozzle as defined in claim 1, wherein: the pipe is added between the tangential hole of the centrifugal nozzle and the cyclone chamber, and has an inner diameter of 5-10mm and a length of 30-50 mm.

3. A structure for improving carbon deposition in a centrifugal nozzle as defined in claim 1, wherein: the carbon scraping ring added into the cyclone chamber has the shape consistent with that of the inner cavity of the cyclone chamber, the thickness of the carbon scraping ring is about 2mm, the material of the carbon scraping ring is the same as that of the centrifugal nozzle, and the carbon scraping ring can be detached and cleaned regularly.

Technical Field

The invention belongs to the field of centrifugal nozzles of combustion chambers, and particularly relates to a structure for improving carbon deposition of a centrifugal nozzle, which can effectively solve the problem of coking and carbon deposition of the centrifugal nozzle and is simple in structure and convenient to process.

Background

In recent years, the problem of carbon deposition in a combustion chamber is more serious, which is called carbon deposition, and the carbon deposition refers to hard cemented carbon, namely carbon deposition, which is generated when fuel and fuel oil which is strung into the combustion chamber cannot be completely combusted, so that the hard cemented carbon is adhered to an intake/exhaust valve, the edge of a cylinder, the top of a piston, a spark plug and the combustion chamber and is continuously accumulated under the action of repeated high temperature of an engine.

The centrifugal nozzle is a pressure atomizing nozzle, and the working principle of the centrifugal nozzle is as follows: under the action of certain pressure, fuel oil enters the swirl chamber through the tangential holes and rotates therein, and is propelled towards the nozzle at a certain axial speed, and is restricted by the wall surface of the swirl chamber to shrink when approaching the nozzle, so that the fuel oil is sprayed outwards in a rotating manner from the small nozzle. Because of the centrifugal action, the fuel does not fill the cyclone chamber, and a hollow vortex communicated with the outside atmosphere exists in the middle, so that the fuel is sprayed out from the nozzle to form an annular tube film. At the section of the nozzle outlet, due to the loss of the constraint action of the hole wall, the fuel oil forms a rotating oil film at the downstream of the nozzle outlet and is broken into small oil drops according to the liquid film breaking mechanism. The oil film is conical, the included angle between the generatrices of the cones is the spray cone angle, generally, when the oil pressure at the inlet of the nozzle is higher than 1.2MPa, the fuel oil can be atomized at the outlet of the nozzle to form a hollow and rotating oil mist particle group, and the hollow spray torch and the airflow structure formed by the swirler at the head part of the combustion chamber are well matched, so that the stability of flame is facilitated. To ensure the quality of atomization, such nozzles often have to be maintained at about 1.5MPa oil pressure.

The structure of the invention is that a pipeline is added between the tangential hole of the traditional centrifugal nozzle and the swirl chamber for introducing cooling air to cool the centrifugal nozzle and related components, and a carbon scraping ring is added between the swirl chambers, so that carbon deposition generated in the nozzle can be scraped by the cutting edge of the carbon scraping ring, and the accumulation of the carbon deposition of the centrifugal nozzle is prevented.

Disclosure of Invention

The invention aims to solve the technical problem of providing a structure for improving carbon deposition of a centrifugal nozzle, which can effectively improve the carbon deposition problem of a nozzle of a combustion chamber and improve the combustion efficiency of the combustion chamber, and has the advantages of simple structure and convenient processing.

Technical scheme

The technical scheme adopted for solving the technical problem is as follows: a pipeline is added between a tangential hole of a traditional centrifugal nozzle and a swirl chamber and is used for introducing cooling air to cool the centrifugal nozzle and related components, a carbon scraping ring is added between the swirl chambers, carbon deposits generated in the nozzle can be scraped by a cutting edge of the carbon scraping ring, and the carbon deposits of the centrifugal nozzle are prevented from being accumulated.

The pipe is added between the tangential hole of the centrifugal nozzle and the cyclone chamber, and has an inner diameter of 5-10mm and a length of 30-50 mm.

The carbon scraping ring added into the cyclone chamber has the shape consistent with that of the inner cavity of the cyclone chamber, the thickness of the carbon scraping ring is about 2mm, the material of the carbon scraping ring is the same as that of the centrifugal nozzle, and the carbon scraping ring can be detached and cleaned regularly.

The invention has the following beneficial effects:

this structure introduces cooling air from the pipeline and cools off centrifugal nozzle and relevant subassembly, cools off the nozzle, prevents that high temperature from resulting in the nozzle to warp, and on blowing the carbon deposit that produces of will not burning completely simultaneously and scraping the carbocycle, the blade through scraping the carbocycle will deposit carbon and detach, can improve the carbon deposit problem of combustion chamber nozzle effectively, improves the combustion efficiency of combustion chamber, simple structure, and processing is convenient.

The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

Drawings

FIG. 1 is a schematic representation of the present invention

FIG. 2 is a schematic view of a swirler without a tube and carbon scraper ring

In the figure, 1-a scraping carbon ring, 2-a cyclone chamber, 3-a pipeline, 4-a tangential hole and 5-a nozzle.

Detailed Description

The invention will now be further described with reference to the accompanying drawings

In combination with fig. 1, the present invention mainly provides a structure for improving carbon deposition of a centrifugal nozzle, wherein a pipe 3 is added between a tangential hole 4 of a conventional centrifugal nozzle and a swirl chamber 2 for introducing cooling air to cool the centrifugal nozzle and related components, and a carbon scraper ring 1 is added between the swirl chambers 2 to scrape carbon deposition generated inside the nozzle by using a cutting edge of the carbon scraper ring, so that the carbon deposition of the centrifugal nozzle is prevented from being accumulated.

When centrifugal nozzle worked in the combustion chamber, introduced cooling air from the pipeline and cooled off centrifugal nozzle and relevant subassembly, cooled off the nozzle, prevented that high temperature from resulting in the nozzle to warp, blow the carbon deposit that produces of not burning completely simultaneously and scrape the carbocycle on, the blade through scraping the carbocycle is detached with the carbon deposit, scrapes the carbon ring and is detachable, regularly clears up scraping the carbon ring.

The structure can effectively improve the carbon deposition problem of the nozzle of the combustion chamber, improves the combustion efficiency of the combustion chamber, and has simple structure and convenient processing.