Air pickup target structure for air injection test of oil injection hole of cooling oil pipe assembly

Abstract

The utility model discloses a gas pick-up target structure for a gas injection test of oil injection holes of a cooling oil pipe assembly, relates to the technical field of engines, and aims to solve the problem that detection data of gas injected from each oil injection hole is influenced by mutual interference of gas flows injected from each hole due to too close distance between the oil injection holes in the prior art. A fixing block is arranged on the outer side of the cooling oil pipe assembly and provided with gas picking targets, the gas picking targets comprise the first gas picking target and the second gas picking target, the first gas picking target and the second gas picking target are concentric with the oil spraying opening and close to each other, the end faces of the gas picking targets are higher than the surface of the fixing block, and the wall thickness of the gas picking targets is smaller than 2 mm. According to the utility model, the wall thickness is less than or equal to 2mm, so that the problem that test gas impacts the side wall to influence the test precision can be reduced, the end surface of the gas pickup target is not less than 8mm higher than the surface of the fixed block, and the distance between the gas pickup target and the oil injection port is not greater than 5mm, so that the mutual interference of ejected gas flows can be reduced, and the influence on the detection data of the gas ejected from the oil injection port can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of engines, in particular to a gas collecting target structure for jet testing of fuel injection holes of a cooling oil pipe assembly. Background Technique

[0002] The electric drive cooling system is used to cool the electric drive motor to ensure the normal operation of the electric drive motor. In addition to overall cooling, the electric drive motor can be cooled by adding a large amount of lubricating oil, and can also be cooled at a fixed point by spraying oil at a fixed point through a cooling oil pipe.

[0003] The cooling spray oil pipe of an oil-cooled motor with the publication number CN220653134U includes a main oil passage and an injection oil branch pipe communicated with the main oil passage. The injection oil branch pipe is an oil distribution passage, and injection holes are distributed on both the injection oil branch pipe and the main oil passage. During use, the cooling oil pipe assembly is wound around the outside of the electric drive motor and close to the electric drive motor, and the injection holes are oriented towards specific points to be cooled on the electric drive motor. The injection holes spray oil at a fixed point to cool the electric drive motor, so that a small amount of oil injection can meet the cooling requirements of the electric drive motor.

[0004] In the test of the cooling oil pipe assembly, since each fuel injection port needs to be tested by shooting at a target, but the distances between the fuel injection ports are too close, the airflows ejected from each hole will interfere with each other, affecting the detection data of the gas ejected from each fuel injection port, and thus affecting the test result. Content of the Utility Model

[0005] The technical problem to be solved by the utility model is to overcome the existing defects and provide a gas collecting target structure for jet testing of fuel injection holes of a cooling oil pipe assembly, which can effectively solve the problems in the background technique.

[0006] To achieve the above object, the utility model discloses a gas collecting target structure for jet testing of fuel injection holes of a cooling oil pipe assembly. The technical solution adopted is that it includes a cooling oil pipe assembly. There are a plurality of fuel injection ports on the cooling oil pipe assembly, and the positions of the fuel injection ports are close to each other. There is a fixing block outside the cooling oil pipe assembly, and there is a gas collecting target on the fixing block. The gas collecting target includes a first gas collecting target and a second gas collecting target. The first gas collecting target and the second gas collecting target are concentric with the fuel injection ports and close to each other. The end face of the gas collecting target is higher than the surface of the fixing block, and the wall thickness of the gas collecting target is less than 2 mm.

[0007] As a preferred technical solution of the utility model, the distance between the end face of the gas collecting target and the surface of the fixing block is not less than 8 mm, and the distance between the gas collecting target and the fuel injection port is not more than 5 mm, preventing the two gas flows from disturbing each other before the gas ejected from the fuel injection port reaches the gas collecting target and affecting the detection.

[0008] As a preferred technical solution of the present utility model, the gas pickup target is connected to the air pipe, and the interface between the gas pickup target and the air pipe is located inside the fixed block.

[0009] As a preferred technical solution of the present utility model, the gas pickup target and the air pipe are aligned with each other through a cut surface inside the fixed block. A sealant is provided in the gap between the gas pickup target and the air pipe and the fixed block. The sealant is an electric welding quick-drying sealant, and the sealant is used for fixing and sealing the gas pickup target and the air pipe inside the fixed block.

[0010] As a preferred technical solution of the present utility model, the other end of the air pipe is connected to a gas pressure detection device, and the test gas can enter the inside of the gas pressure detection device through the air pipe, so as to perform detection.

[0011] Compared with the prior art, the beneficial effects of the present utility model are as follows: by setting the wall thickness less than or equal to 2 mm, the present utility model can reduce the problem that the test gas impacts the side wall and affects the test accuracy. The first gas pickup target and the second gas pickup target are respectively concentric with the fuel injection port and are close to each other. The end face of the gas pickup target is not less than 8 mm higher than the surface of the fixed block, and the gas pickup target is not more than 5 mm away from the fuel injection port, which can reduce the mutual interference of the ejected airflows and affect the detection data of the gas ejected from each fuel injection port. Description of the Drawings

[0012] Figure 1 Schematic structural diagram of a cooling oil pipe assembly in the prior art;

[0013] Figure 2 Schematic structural diagram of the present utility model Figure 1 ;

[0014] Figure 3 Schematic structural diagram of the present utility model Figure 2 ;

[0015] Figure 4 Cross-sectional view of the structure of the present utility model.

[0016] In the figure: 1. Cooling oil pipe assembly; 101. Fuel injection port; 2. Fixed block; 3. First gas pickup target; 4. Second gas pickup target; 5. Air pipe; 6. Sealant. Detailed Embodiments

[0017] 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 only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model. Example 1

[0018] As shown Figures 1 to 4 in the figure, the utility model discloses a gas collecting target structure for jet testing of the fuel injection holes of a cooling oil pipe assembly. The adopted technical solution is that it includes a cooling oil pipe assembly 1, and a plurality of fuel injection ports 101 are opened on the cooling oil pipe assembly 1, and the positions of the fuel injection ports 101 are close to each other.

[0019] As a preferred technical solution of the utility model, there is a fixing block 2 on the side of the cooling oil pipe assembly 1, and a plurality of gas collecting targets are arranged on the fixing block 2. The gas collecting targets include a first gas collecting target 3 and a second gas collecting target 4. The first gas collecting target 3 and the second gas collecting target 4 are respectively concentric with the fuel injection port 101 and are close to each other. The end face of the gas collecting target is not less than 8 mm higher than the surface of the fixing block 2. The gas collecting target is not more than 5 mm away from the fuel injection port 101. The wall thickness of the gas collecting target is 2 mm. The 2-mm wall thickness of the gas collecting target can reduce the problem that the test gas impacts the side wall and affects the test accuracy. There is an air pipe 5 at the other end of the gas collecting target. The interface between the gas collecting target and the air pipe 5 is inside the fixing block 2. As Figure 4 shown in the figure, the cross sections of the gas collecting target and the air pipe 5 are aligned inside the fixing block 2. There is a sealant 6 at the joint between the gas collecting target and the air pipe 5 and the fixing block 2, so that the gas collecting target and the air pipe 5 are fixed to the fixing block 2, and the gas collecting target and the air pipe 5 are connected to each other. The other end of the air pipe 5 is connected to a pressure detection device.

[0020] The working principle of the utility model: During the test, high-pressure test gas is introduced into the cooling oil pipe assembly 1. The test gas will be ejected from the fuel injection port 101 and sprayed into the gas collecting target. The test gas enters the pressure detection device through the air pipe 5, and the pressure is detected by the pressure detection device, so as to detect whether the fuel injection port 101 is standard.

[0021] The circuits and mechanical connections involved in the utility model are common means adopted by those skilled in the art and can obtain technical inspiration through a limited number of tests, which belong to common general knowledge.

[0022] The components not described in detail in this article are prior art.

[0023] Although the embodiments of the utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the utility model. The scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A gas collecting target structure for the jet test of the fuel injection holes of a cooling oil pipe assembly, comprising a cooling oil pipe assembly (1), wherein the cooling oil pipe assembly (1) has a plurality of fuel injection ports (101), and the positions of the fuel injection ports (101) are close to each other. It is characterized in that: There is a fixing block (2) on the outside of the cooling oil pipe assembly (1). There is a gas pickup target on the fixing block (2). The gas pickup target includes a first gas pickup target (3) and a second gas pickup target (4). The first gas pickup target (3) and the second gas pickup target (4) are concentric with the fuel injection port (101) and are close to each other. The end face of the gas pickup target is higher than the surface of the fixing block (2), and the wall thickness of the gas pickup target is less than 2 mm.

2. The air pickup target structure for the air jet test of the fuel injection holes of the cooling oil pipe assembly according to claim 1, characterized in that: The distance between the end face of the gas pickup target and the surface of the fixing block (2) is not less than 8 mm, and the distance between the gas pickup target and the fuel injection port (101) is not more than 5 mm.

3. The air pickup target structure for the jet test of the fuel injection holes of the cooling oil pipe assembly according to claim 1, characterized in that: The gas pickup target is connected to a gas pipe (5), and the interface between the gas pickup target and the gas pipe (5) is located inside the fixing block (2).

4. A gas collecting target structure for jet testing of the fuel injection holes of a cooling oil pipe assembly according to claim 3, characterized in that: The gas pickup target and the gas pipe (5) are aligned with each other through a cut surface inside the fixing block (2), and a sealant (6) is provided in the gap between the gas pickup target and the gas pipe (5) and the fixing block (2).

5. The air pickup target structure for the jet test of the fuel injection holes of the cooling oil pipe assembly according to claim 4, characterized in that: The other end of the gas pipe (5) is connected to a gas pressure detection device.

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