Oil sprayer seat with smooth arc-shaped transition section

Abstract

The utility model relates to the technical field of fuel injector seats, in particular to a fuel injector seat with a smooth arc-shaped transition section. The fuel injector comprises a fuel injector body and a connecting nozzle mounted on the fuel injector body, the fuel injector body is a hollow cylindrical body, and a channel communicated with the connecting nozzle is arranged in the fuel injector body; the side part of the oil sprayer body is sunken inwards to form a mounting groove matched with the connecting nozzle; the connecting nozzle is a hollow blocky body, and a channel communicated with the oil sprayer body is arranged in the connecting nozzle; and a smooth arc-shaped transition section is arranged at the joint of the connecting nozzle and the mounting groove. By widening the mounting groove and optimizing the smooth arc-shaped transition section of the connecting nozzle, the structural strength and durability of the fuel injector seat are remarkably improved; during welding, stress generated by the gap is dispersed to the smooth arc-shaped transition section of the connecting nozzle, and potential problems caused by stress concentration are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of fuel injector seats, and particularly relates to a fuel injector seat with a smooth arc-shaped transition section. Background Technique

[0002] In a fuel injection system, as a core component connecting the fuel injector body and the engine combustion chamber, the quality of the fuel injector seat is directly related to the stability and reliability of the system. However, the traditional design of the fuel injector seat often has a significant problem: that is, the connection between the fuel injector seat and the fuel injector body or the connecting nozzle usually adopts a sharp structure, such as Figure 3 As shown, when subjected to complex external forces, this structure is extremely prone to stress concentration. Stress concentration not only causes uneven stress on these parts of the fuel injector seat, but also leads to cracks or even fractures after long-term accumulation, thus seriously affecting the service life of the fuel injector seat and having an adverse impact on the performance of the entire fuel injection system. To solve the above problems, the design of the fuel injector seat with an arc transition emerged. Its main purpose is to reduce stress concentration by optimizing the structure of the connection, thereby improving the durability and reliability of the fuel injector seat. However, there are still some challenges in such designs in the prior art, such as incomplete adaptation to the specific application scenarios of the fuel injector seat, resulting in problems such as welding cracks and structural deformation during actual use.

[0003] To solve these technical problems, those skilled in the art have conducted in-depth exploration and research. Taking the Chinese patent CN202851613U as an example, it proposes a design with an arc chamfer structure. This design connects various parts of the fuel injector seat through multiple arcs with smooth transitions, significantly reducing the stress concentration coefficient at the transition. However, although this solution has achieved positive results in improving the stress concentration phenomenon, in actual applications, it still needs to be further optimized and adjusted according to the specific working conditions and structural characteristics of the fuel injector seat to ensure its proper adaptation to the installation groove of the fuel injector body, so as to give full play to its protective role. Content of the Utility Model

[0004] The technical problem to be solved by the utility model is: to overcome the deficiencies of the prior art and provide a fuel injector seat with a smooth arc-shaped transition section.

[0005] The technical solution adopted by the utility model is as follows:

[0006] A fuel injector seat with a smooth arc-shaped transition section includes a fuel injector body and a connecting nozzle installed on the fuel injector body, wherein:

[0007] The fuel injector body is a hollow columnar body, and a channel communicating with the connecting nozzle is arranged inside it; a mounting groove matching with the connecting nozzle is formed by inward depression on the side of the fuel injector body;

[0008] The connecting nozzle is a hollow block, and a channel communicating with the injector body is arranged inside it; a smooth arc-shaped transition section is arranged at the connection between the connecting nozzle and the mounting groove.

[0009] This technical solution significantly improves the structural strength and durability of the injector seat by widening the mounting groove and optimizing the smooth arc-shaped transition section of the connecting nozzle. Specifically, the mounting groove is provided with widened extension parts on both the left and right sides, and the extension parts ensure that they can fully cooperate with the smooth arc-shaped transition section of the connecting nozzle, thereby achieving a firm connection; the smooth arc-shaped transition section not only realizes the smooth transition between the connecting nozzle and the mounting groove, but more importantly, its arc shape plays a role in dispersing stress during the welding process; during welding, the stress generated by the gap is dispersed at the smooth arc-shaped transition section of the connecting nozzle, avoiding potential problems caused by stress concentration, such as welding cracks or structural deformation.

[0010] In addition, the injector seat with a smooth arc-shaped transition section proposed above according to the present utility model further has the following additional technical features:

[0011] According to an embodiment of the present utility model, the mounting groove is provided with widened extension parts on both the left and right sides to ensure full cooperation with the smooth arc-shaped transition section of the connecting nozzle.

[0012] In this technical solution, the widened extension part is a stress relief structure. When the connecting nozzle and the mounting groove are welded, due to the thermal expansion, contraction or mechanical stress between the materials, stress concentration will occur at the connection. The widened extension part provides additional material space, enabling the stress to be dispersed and reducing the potential impact of stress concentration on the structural integrity; in addition, the combination of the smooth arc-shaped transition section of the connecting nozzle and the widened extension part of the mounting groove can achieve a more precise fit, ensuring that the connecting nozzle can be accurately positioned in the mounting groove during installation, reducing the installation difficulty and improving the assembly accuracy.

[0013] According to an embodiment of the present utility model, the smooth arc-shaped transition section includes arc transition section I and arc transition section II; wherein:

[0014] Arc transition section I is in a smooth arc shape and extends from the right side of the connecting nozzle towards the mounting groove;

[0015] Arc transition section II is in a smooth arc shape and extends from the left side of the connecting nozzle towards the mounting groove.

[0016] In this technical solution, arc transition section I and II increase the contact area between the connecting nozzle and the mounting groove. Compared with a straight or sharp connection method, the smooth arc-shaped transition section can provide a larger contact area, making the connection more firm, used to improve the connection strength between the connecting nozzle and the mounting groove, and ensuring the overall structural stability and reliability of the injector seat.

[0017] According to an embodiment of the present utility model, the maximum distance between the arc transition section I and the arc transition section II is less than the width of both sides of the installation groove, and a gap for welding is left between the installation groove and the arc transition section I and the arc transition section II.

[0018] In this technical solution, the arc transition section itself is for dispersing stress and avoiding stress concentration at the connection. The maximum distance between the arc transition section I and the arc transition section II being less than the width of both sides of the installation groove means that an elastic region is formed between the connection nozzle and the installation groove. The elastic region can absorb and disperse stress caused by external forces or temperature changes to a certain extent, thus enabling the entire connection structure to be stressed more evenly; the gap can also prevent excessive heat concentration during welding, reducing the risk of welding deformation and cracks; in addition, leaving a certain gap ensures compensation for dimensional deviations within a certain range.

[0019] According to an embodiment of the present utility model, the stress generated by the gap is dispersed at the smooth arc-shaped transition section of the connection nozzle.

[0020] In this technical solution, due to factors such as thermal expansion and contraction of materials and thermal stress during the welding process, the gap is prone to stress concentration; the smooth arc-shaped transition section structure can guide the stress to flow along its curvature direction instead of concentrating at a certain point or a small section; when stress is generated in the gap, this stress will be dispersed to a larger area by the smooth arc-shaped transition section, thus reducing the risk of stress concentration.

[0021] According to an embodiment of the present utility model, the arc radius of the smooth arc-shaped transition section is selected according to the stress generated by the gap.

[0022] In this technical solution, the arc radius and shape of the arc transition section I and the arc transition section II are adjusted according to actual needs to achieve the best stress dispersion effect and connection strength.

[0023] Compared with the prior art, the present utility model has the following beneficial effects:

[0024] (1) By widening the installation groove and optimizing the smooth arc-shaped transition section of the connection nozzle, it has the advantages of simple installation, high welding quality, good stress dispersion effect, etc., significantly improving the structural strength and durability of the fuel injector seat.

[0025] (2) The stress generated by the gap is dispersed at the smooth arc-shaped transition section of the connection nozzle, avoiding potential problems caused by stress concentration, such as welding cracks or structural deformation, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is one of the structural schematic diagrams of the present utility model.

[0027] Figure 2 It is the second structural schematic diagram of the present utility model.

[0028] Figure 3 It is the structural schematic diagram of the prior art.

[0029] In the figure: 1. Injector body; 2. Installation groove; 3. Connecting nozzle; 4. Arc transition section I; 5. Arc transition section II. Specific embodiments

[0030] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0031] Embodiment 1

[0032] As Figure 1 and Figure 2 shown, this embodiment provides an injector seat with a smooth arc-shaped transition section, including an injector body 1 and a connecting nozzle 3 installed on the injector body 1, wherein:

[0033] The injector body 1 is a hollow columnar body, and a channel communicating with the connecting nozzle 3 is arranged inside it; a recess is formed on the side of the injector body 1 to form an installation groove 2 that cooperates with the connecting nozzle 3;

[0034] The connecting nozzle 3 is a hollow block body, and a channel communicating with the injector body 1 is arranged inside it; a smooth arc-shaped transition section is arranged at the connection between the connecting nozzle 3 and the installation groove 2.

[0035] As Figure 1 and Figure 2 shown, this technical solution significantly improves the structural strength and durability of the injector seat by widening the installation groove 2 and optimizing the smooth arc-shaped transition section of the connecting nozzle 3. Specifically, the installation groove 2 is provided with widened extension parts on the left and right sides, and the extension parts ensure that the smooth arc-shaped transition section of the connecting nozzle 3 can be fully fitted, so as to achieve a stable connection; the smooth arc-shaped transition section not only realizes the smooth transition between the connecting nozzle 3 and the installation groove 2, but more importantly, its arc shape plays a role in dispersing stress during the welding process; during welding, the stress generated by the gap is dispersed at the smooth arc-shaped transition section of the connecting nozzle 3, avoiding potential problems caused by stress concentration, such as welding cracks or structural deformation.

[0036] In addition, the injector seat with a smooth arc-shaped transition section proposed according to the present utility model above also has the following additional technical features:

[0037] According to an embodiment of the present utility model, the installation groove 2 is provided with widened extension parts on the left and right sides to ensure complete fit with the smooth arc-shaped transition section of the connecting nozzle 3.

[0038] In this technical solution, the widened extension part is a stress relief structure. When the connecting nozzle 3 and the installation groove 2 are welded, due to thermal expansion, contraction or mechanical stress between materials, stress concentration will occur at the joint. The widened extension part provides additional material space, enabling the stress to be dispersed and reducing the potential impact of stress concentration on the structural integrity. In addition, the combination of the smooth arc-shaped transition section of the connecting nozzle 3 and the widened extension part of the installation groove 2 can achieve a more precise fit, ensuring that the connecting nozzle 3 can be accurately positioned in the installation groove 2 during installation, reducing the installation difficulty and improving the assembly accuracy.

[0039] According to an embodiment of the present utility model, the smooth arc-shaped transition section includes an arc transition section I 4 and an arc transition section II 5; wherein:

[0040] The arc transition section I 4 is in a smooth arc shape and extends from the right side of the connecting nozzle 3 towards the installation groove 2.

[0041] The arc transition section II 5 is in a smooth arc shape and extends from the left side of the connecting nozzle 3 towards the installation groove 2.

[0042] In this technical solution, the arc transition section I 4 and II increase the contact area between the connecting nozzle 3 and the installation groove 2. Compared with the straight or sharp connection method as shown, the smooth arc-shaped transition section can provide a larger contact area, making the connection more firm, which is used to improve the connection strength between the connecting nozzle 3 and the installation groove 2 and ensure the overall structural stability and reliability of the fuel injector seat. Figure 3 shown

[0043] According to an embodiment of the present utility model, the maximum distance between the arc transition section I 4 and the arc transition section II 5 is less than the width of both sides of the installation groove 2, and gaps for welding are left between the installation groove 2 and the arc transition section I 4 and the arc transition section II 5.

[0044] In this technical solution, the arc transition section itself is to disperse stress and avoid stress concentration at the joint. The maximum distance between the arc transition section I 4 and the arc transition section II 5 being less than the width of both sides of the installation groove 2 means that an elastic region is formed between the connecting nozzle 3 and the installation groove 2. The elastic region can absorb and disperse stress caused by external forces or temperature changes to a certain extent, making the entire connection structure more evenly stressed. The gap can also prevent excessive heat concentration during welding, reducing the risk of welding deformation and cracks. In addition, leaving a certain gap ensures compensation for dimensional deviations within a certain range.

[0045] According to an embodiment of the present invention, the stress generated by the gap is dispersed at the smooth arc-shaped transition section of the connecting nozzle 3.

[0046] In this technical solution, due to factors such as the thermal expansion and contraction of materials and the thermal stress during the welding process, the gap is prone to stress concentration; the smooth arc-shaped transition section can guide the stress to flow along its curvature direction, rather than concentrating at a certain point or a small section; when stress is generated in the gap, these stresses will be dispersed to a larger area by the smooth arc-shaped transition section, thereby reducing the risk of stress concentration.

[0047] According to an embodiment of the present invention, the arc radius of the smooth arc-shaped transition section is selected according to the stress generated by the gap.

[0048] In this technical solution, the arc radius and shape of the arc transition section I 4 and the arc transition section II 5 are adjusted according to actual needs to achieve the best stress dispersion effect and connection strength.

[0049] The usage process of the above embodiment is as follows:

[0050] As Figure 1 and Figure 2 shown, during the installation process: since the installation groove 2 is provided with a widened extension part, which fully cooperates with the smooth arc-shaped transition section (including the arc transition section I 4 and the arc transition section II 5) of the connecting nozzle 3, the connecting nozzle 3 can be easily and accurately positioned in the installation groove 2, reducing the installation difficulty and improving the assembly accuracy.

[0051] As Figure 1 and Figure 2 shown, during the welding process: since there is an appropriate gap between the connecting nozzle 3 and the installation groove 2, the gap not only provides enough space for the welding operation to ensure the welding quality, but also can effectively prevent the excessive concentration of heat generated during welding, reducing the risk of welding deformation and cracks; the gap can also accommodate dimensional deviations within a certain range, increasing the fault tolerance of the structure; the smooth arc-shaped transition section plays a key role in stress dispersion; due to factors such as the thermal expansion and contraction of materials and the thermal stress during the welding process, stress concentration is likely to occur at the connection, and the arc shape of the smooth arc-shaped transition section can guide the stress to flow along its curvature direction, rather than concentrating at a certain point or a small section. When stress is generated in the gap, these stresses will be dispersed to a larger area by the smooth arc-shaped transition section, thereby reducing the risk of stress concentration and improving the structural strength and durability of the fuel injector seat.

[0052] As Figure 1 and Figure 2As shown, during use: According to the magnitude of the stress generated by the gap, the arc radius and shape of the smooth arc-shaped transition section can be adjusted to achieve the best stress dispersion effect and connection strength, enabling the injector seat to adapt to different working conditions and stress requirements, and ensuring its stable performance in various environments.

[0053] In summary, the above-mentioned injector seat with a smooth arc-shaped transition section realizes the advantages of simple installation, high welding quality, good stress dispersion effect, etc. through optimized structure, significantly improving the structural strength and durability of the injector seat.

[0054] Although the present utility model has been described in detail by referring to the accompanying drawings and in combination with preferred embodiments, the present utility model is not limited thereto. Without departing from the spirit and essence of the present utility model, those of ordinary skill in the art make various equivalent modifications or substitutions to the embodiments of the present utility model, and these modifications or substitutions should all fall within the scope of the present utility model. / Any person skilled in the art within the technical scope disclosed by the present utility model can easily think of changes or substitutions, which should all be covered by the protection scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the claims.

Claims

1. An injector seat with a smooth arc-shaped transition section, characterized in that, The invention comprises a fuel injector body (1) and a connecting nozzle (3) mounted on the fuel injector body (1), wherein: The fuel injector body (1) is a hollow columnar body, and a passage communicating with the connecting nozzle (3) is arranged inside the fuel injector body (1); the side of the fuel injector body (1) is recessed inward to form a mounting groove (2) matching with the connecting nozzle (3); The connecting nozzle (3) is a hollow block, and a passage connected to the fuel injector body (1) is arranged inside the connecting nozzle (3); a smooth arc-shaped transition section is arranged at the connection between the connecting nozzle (3) and the mounting groove (2).

2. The fuel injector seat with a smooth arc-shaped transition section as described in claim 1, wherein The installation groove (2) is provided with widened extension parts on the left and right sides to ensure complete matching with the smooth arc-shaped transition section of the connection nozzle (3).

3. The fuel injector seat with a smooth arc-shaped transition section as described in claim 2, characterized in that, The smooth arc-shaped transition section includes an arc-shaped transition section I (4) and an arc-shaped transition section II (5); wherein: The arc-shaped transition section I (4) is in a smooth arc shape and extends from the right side of the connecting nozzle (3) to the mounting groove (2); The arc-shaped transition section II (5) is in a smooth arc shape and extends from the left side of the connecting nozzle (3) to the mounting groove (2).

4. The fuel injector seat with a smooth arc-shaped transition section as described in claim 3, characterized in that, The maximum distance between the arc-shaped transition section I (4) and the arc-shaped transition section II (5) is smaller than the width of both sides of the installation groove (2), and gaps for welding are reserved between the installation groove (2) and the arc-shaped transition section I (4) and the arc-shaped transition section II (5).

5. The fuel injector seat with a smooth arc-shaped transition section as described in claim 4, characterized in that, The stress generated by the gap is dispersed at the smooth arc-shaped transition section of the connecting nozzle (3).

6. The fuel injector seat with a smooth arc-shaped transition section as described in claim 5, characterized in that, The arc radius of the smooth arc-shaped transition section is selected according to the stress generated by the gap.

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