阅读说明：本技术 一种位置可调式多喷油器端盖 (Position-adjustable multi-oil injector end cover ) 是由 刘岱 张天 刘龙 王洋 韩笑 梅齐昊 唐元亨 于 2021-08-16 设计创作，主要内容包括：一种位置可调式多喷油器端盖,属于船用柴油机喷雾与燃烧可视化测试技术领域。本发明解决了现有的定容燃烧装置设计中无法实现多喷油器布置、无法调节喷油器的相对位置的问题。缸盖本体上分别加工有第一阶梯通孔和第二阶梯通孔,主喷油器套筒固装在缸盖本体上且所述主喷油器由上到下依次同轴插装在主喷油器套筒及第一阶梯通孔内,第二调节偏心轮安装在第二阶梯通孔内,第一调节偏心轮安装在第二调节偏心轮内,所述侧喷油器底座布置在第二阶梯通孔的上方且与缸盖本体固接,侧喷油器底座上开设有第一安装通孔,侧喷油器套筒固装在侧喷油器底座上且所述侧喷油器由上到下依次插装在侧喷油器套筒、侧喷油器底座及第一调节偏心轮内。(A position-adjustable multi-oil injector end cover belongs to the technical field of spraying and combustion visualization tests of marine diesel engines. The invention solves the problems that the arrangement of multiple oil injectors cannot be realized and the relative position of the oil injectors cannot be adjusted in the design of the conventional constant-volume combustion device. The cylinder cover body is respectively provided with a first step through hole and a second step through hole, a main oil sprayer sleeve is fixedly arranged on the cylinder cover body, the main oil sprayer is sequentially and coaxially inserted into the main oil sprayer sleeve and the first step through hole from top to bottom, a second adjusting eccentric wheel is arranged in the second step through hole, a first adjusting eccentric wheel is arranged in the second adjusting eccentric wheel, a side oil sprayer base is arranged above the second step through hole and is fixedly connected with the cylinder cover body, a first installation through hole is formed in the side oil sprayer base, the side oil sprayer sleeve is fixedly arranged on the side oil sprayer base, and the side oil sprayer is sequentially inserted into the side oil sprayer sleeve, the side oil sprayer base and the first adjusting eccentric wheel from top to bottom.)

1. The utility model provides a position adjustable many sprayer end cover which characterized in that: the cylinder cover comprises a cylinder cover body (1), a main oil sprayer (3), a side oil sprayer (4), a main oil sprayer sleeve (2), a side oil sprayer sleeve (5), a first adjusting eccentric wheel (8), a second adjusting eccentric wheel (7) and a side oil sprayer base (6), wherein the cylinder cover body (1) is respectively provided with a first step through hole and a second step through hole, the main oil sprayer sleeve (2) is fixedly arranged on the cylinder cover body (1), the main oil sprayer (3) is sequentially and coaxially inserted into the main oil sprayer sleeve (2) and the first step through hole from top to bottom, the second adjusting eccentric wheel (7) is arranged in the second step through hole, the first adjusting eccentric wheel (8) is arranged in the second adjusting eccentric wheel (7), the side oil sprayer base (6) is arranged above the second step through hole and is fixedly connected with the cylinder cover body (1), the side oil sprayer base (6) is provided with a first mounting through hole (6-1), the side oil sprayer sleeve (5) is fixedly arranged on the side oil sprayer base (6), and the side oil sprayer (4) is sequentially inserted into the side oil sprayer sleeve (5), the side oil sprayer base (6) and the first adjusting eccentric wheel (8) from top to bottom.

2. A position adjustable multiple fuel injector end cap according to claim 1, wherein: a third step through hole is formed in the second adjusting eccentric wheel (7), the first adjusting eccentric wheel (8) is installed in the third step through hole, a first limiting part (10) is fixedly installed above the first adjusting eccentric wheel (8), and the first limiting part (10) is erected at the top end of the first adjusting eccentric wheel (8).

3. A position adjustable multiple fuel injector end cap according to claim 2, wherein: a second limiting part (9) is arranged above the second adjusting eccentric wheel (7) in a pressing mode, and the second limiting part (9) is fixedly connected with the cylinder cover body (1).

4. A position adjustable multiple fuel injector end cap according to claim 1, 2 or 3, wherein: the top end of the side oil sprayer base (6) and the top end of the first stepped through hole are positioned on the same horizontal plane.

5. A position adjustable multiple fuel injector end cap according to claim 1, 2 or 3, wherein: and each fuel injector is in interference fit with the corresponding fuel injector sleeve.

6. A position adjustable multiple fuel injector end cap according to claim 1, wherein: the first mounting through hole (6-1) is a long hole.

7. A position adjustable multiple fuel injector end cap according to claim 1, wherein: four second mounting through holes (6-2) are formed in the side oil sprayer base (6), the four second mounting through holes (6-2) are arranged in a pairwise symmetrical mode relative to the first mounting through hole (6-1), and the side oil sprayer sleeve (5) is fixedly connected with the side oil sprayer base (6) through a plurality of bolts and the four second mounting through holes (6-2).

8. A position adjustable multiple fuel injector end cap according to claim 1, wherein: the side oil injector (4) is in clearance fit with the first mounting through hole (6-1).

Technical Field

The invention relates to a position-adjustable multi-oil-injector end cover, and belongs to the technical field of spraying and combustion visualization tests of marine diesel engines.

Background

To meet increasingly stringent emission standards and energy conservation requirements, the use of multiple fuel injector arrangements on marine diesel engines is a very effective approach. The conventional multi-oil injector arrangement is mostly applied to a marine low-speed engine and has certain advantages compared with a single-oil injector arrangement, but the multi-oil injector arrangement is rarely applied to a marine medium-high speed diesel engine. The phenomenon of spray crossover can appear in the fuel that a plurality of sprayer spout in the jar, need use constant volume burner to carry out deep research to spray crossover.

The end cover installation design scheme of the conventional constant-volume combustion device cannot realize the arrangement of multiple oil injectors and cannot adjust the positions of the oil injectors, so that the actual spray test requirements cannot be met.

Disclosure of Invention

The invention aims to solve the problems that the arrangement of multiple fuel injectors cannot be realized and the relative positions of the fuel injectors cannot be adjusted in the design of the conventional constant-volume combustion device, and further provides a position-adjustable multi-fuel-injector end cover.

The technical scheme adopted by the invention for solving the technical problems is as follows:

a position-adjustable multi-oil injector end cover comprises a cylinder cover body, a main oil injector, a side oil injector, a main oil injector sleeve, a side oil injector sleeve, a first adjusting eccentric wheel, a second adjusting eccentric wheel and a side oil injector base, wherein the cylinder cover body is respectively provided with a first step through hole and a second step through hole, the main oil injector sleeve is fixedly arranged on the cylinder cover body, the main oil injector is sequentially and coaxially inserted into the main oil injector sleeve and the first step through hole from top to bottom, the second adjusting eccentric wheel is arranged in the second step through hole, the first adjusting eccentric wheel is arranged in the second adjusting eccentric wheel, the side oil injector base is arranged above the second step through hole and is fixedly connected with the cylinder cover body, the side oil injector base is provided with a first mounting through hole, the side oil injector sleeve is fixedly arranged on the side oil injector base, and the side oil injector is sequentially inserted into the side oil injector sleeve from top to bottom, The side oil sprayer base and the first adjusting eccentric wheel.

Furthermore, a third step through hole is formed in the second adjusting eccentric wheel, the first adjusting eccentric wheel is installed in the third step through hole, a first limiting part is fixedly installed above the first adjusting eccentric wheel, and the first limiting part is erected at the top end of the first adjusting eccentric wheel.

Furthermore, a second limiting part is arranged above the second adjusting eccentric wheel in a pressing mode, and the second limiting part is fixedly connected with the cylinder cover body.

Further, the top end of the side oil sprayer base and the top end of the first stepped through hole are located on the same horizontal plane.

Furthermore, each fuel injector and the corresponding fuel injector sleeve are in interference fit.

Further, the first mounting through hole is a long hole.

Furthermore, four second mounting through holes are formed in the side oil sprayer base, the four second mounting through holes are arranged in a pairwise symmetrical mode relative to the first mounting through holes, and the side oil sprayer sleeve is fixedly connected with the side oil sprayer base through a plurality of bolts and the four second mounting through holes.

Furthermore, the side oil injector is in clearance fit with the first mounting through hole.

Compared with the prior art, the invention has the following effects:

through the end cover of this application, realized that two sprayer arrange on constant volume burner's cylinder cap, can adjust the position of offside sprayer simultaneously, can be applied to including observing in a series of visual experiments such as the spraying form and the follow-up combustion condition of the intercrossing interference condition in multi-beam diesel oil spraying space.

Drawings

FIG. 1 is a schematic front view of a side injector in an initial state;

FIG. 2 is a schematic top view of a side injector in an initial state;

FIG. 3 is a schematic bottom view of the side injector in an initial state;

FIG. 4 is a schematic front view of a side injector after a change in position;

FIG. 5 is a schematic top view of a side injector with its position changed;

FIG. 6 is a schematic bottom view of the side injector after a change in position;

fig. 7 is a schematic top view of the cylinder head body.

Detailed Description

The first embodiment is as follows: the embodiment is described with reference to fig. 1 to 7, and a position-adjustable multi-injector end cover comprises a cylinder cover body 1, a main injector 3, a side injector 4, a main injector sleeve 2, a side injector sleeve 5, a first adjusting eccentric wheel 8, a second adjusting eccentric wheel 7 and a side injector base 6, wherein the cylinder cover body 1 is respectively provided with a first step through hole and a second step through hole, the main injector sleeve 2 is fixedly arranged on the cylinder cover body 1, the main injector 3 is sequentially and coaxially inserted into the main injector sleeve 2 and the first step through hole from top to bottom, the second adjusting eccentric wheel 7 is arranged in the second step through hole, the first adjusting eccentric wheel 8 is arranged in the second adjusting eccentric wheel 7, the side injector base 6 is arranged above the second step through hole and is fixedly connected with the cylinder cover body 1, the side injector base 6 is provided with a first mounting through hole 6-1, the side oil sprayer sleeve 5 is fixedly arranged on the side oil sprayer base 6, and the side oil sprayer 4 is sequentially inserted into the side oil sprayer sleeve 5, the side oil sprayer base 6 and the first adjusting eccentric wheel 8 from top to bottom.

The position of the side injector 4 is adjusted by providing two adjusting eccentric wheels.

The cylinder cover body 1 is fixedly arranged on the constant volume elastic body through a bolt. Through the end cover of this application, realized that two sprayer arrange on constant volume burner's cylinder cap, can adjust the position of contralateral oil sprayer 4 simultaneously, can be applied to including observing in a series of visual experiments such as the spraying form and the follow-up burning condition of the intercrossing interference condition in multi-beam diesel oil spraying space.

The side oil sprayer base 6 is fixedly connected with the cylinder cover body 1 through a plurality of bolts.

A third step through hole is formed in the second adjusting eccentric wheel 7, the first adjusting eccentric wheel 8 is installed in the third step through hole, a first limiting part 10 is fixedly installed above the first adjusting eccentric wheel 8, and the first limiting part 10 is erected at the top end of the first adjusting eccentric wheel 8. The axial limiting of the first adjusting eccentric wheel 8 is realized through the first limiting part 10 and a shoulder in the through hole of the third step. The first limiting part 10 is fixedly mounted on the first adjusting eccentric wheel 8 through a screw.

A second limiting part 9 is pressed above the second adjusting eccentric wheel 7, and the second limiting part 9 is fixedly connected with the cylinder cover body 1. The axial limiting of the second adjusting eccentric wheel 7 is realized through the second limiting piece 9 and a shoulder in the second step through hole. The second limiting part 9 is fixedly arranged on the cylinder cover body 1 through a screw.

The top end of the side oil sprayer base 6 and the top end of the first stepped through hole are positioned on the same horizontal plane. The side oil sprayer base 6 is of a U-shaped plate structure and is buckled on the cylinder cover body 1.

And each fuel injector is in interference fit with the corresponding fuel injector sleeve. By the design, the installation stability of the oil sprayer is guaranteed.

The first mounting through hole 6-1 is a long hole. By adopting the design, the side oil injector 4 is convenient to move.

Four second mounting through holes 6-2 are formed in the side oil sprayer base 6, the four second mounting through holes 6-2 are arranged in a pairwise symmetrical mode relative to the first mounting through holes 6-1, and the side oil sprayer sleeve 5 is fixedly connected with the side oil sprayer base 6 through a plurality of bolts and the four second mounting through holes 6-2. By the design, the number of the bolts is preferably four, the bolts are symmetrically arranged in pairs, each bolt sequentially penetrates through the side oil sprayer sleeve 5 and the second installation through hole 6-2 from top to bottom, and the bottoms of the bolts are fastened through nuts. The function of fixedly mounting the side oil sprayer sleeve is achieved. The second mounting through hole 6-2 is preferably an elongated hole.

The side oil injector 4 is in clearance fit with the first mounting through hole 6-1. By such a design, a certain deviation margin is provided for the movement of the side injector 4.

The working principle is as follows:

during use, the central axis of the main oil injector 3 and the central axis of the side oil injector 4 are kept in the same virtual vertical plane. When the position of the side oil sprayer 4 needs to be changed, the side oil sprayer 4, the side oil sprayer sleeve 5 and the side oil sprayer base 6 are firstly disassembled, then the first adjusting eccentric wheel 8 and the second adjusting eccentric wheel 7 are simultaneously rotated by 180 degrees, then the two adjusting eccentric wheels are sequentially fixed, and then the oil sprayer base, the side oil sprayer sleeve 5 and the side oil sprayer 4 are sequentially installed and fixed to complete the change of the position of the side oil sprayer 4.