Fuel oil distribution joint

Abstract

The utility model discloses a fuel oil distribution connector which comprises a distribution block body, and a fuel oil return channel, a leakage oil return channel and a fuel oil inlet channel are sequentially arranged in the distribution block body from top to bottom. A fuel oil leakage alarm sensor is installed on the leakage oil return channel, a leakage oil inlet and a leakage oil outlet are formed in the leakage oil return channel, the height of the leakage oil inlet is smaller than that of the leakage oil outlet, and the height of the leakage oil outlet is larger than that of a middle electrode of the fuel oil leakage alarm sensor. According to the fuel oil leakage alarm sensor, a total oil inlet and return channel is integrated, the leakage alarm and leakage functions are achieved, and meanwhile the problem that when the fuel oil leakage alarm sensor is used in a transversely-arranged state, due to the fact that the fuel oil leakage amount is small, and the liquid level does not reach an intermediate electrode, alarming cannot be conducted is solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of fuel distribution, and particularly relates to a fuel distribution joint. Background Art

[0002] The statements here only provide the background art related to the utility model, and do not necessarily constitute the prior art.

[0003] There are only two oil channels arranged in the existing fuel distribution joint. One oil channel is connected to the return oil of the pipeline, and the other oil channel is connected to the incoming oil of the pipeline. Its function is equivalent to integrating a two-way joint and a pipe clamp fixing component. In order to ensure that the fuel leakage alarm can be triggered in time when fuel leakage occurs in the fuel system, the fuel system is usually provided with a fuel leakage alarm sensor. Its working principle is to trigger the sensor alarm by causing changes in liquid level, pressure, etc. The structure of the existing fuel distribution joint, such as a fuel dispenser structure disclosed in Chinese invention patent CN113339170A, can only realize simple incoming oil and return oil functions and cannot realize the fuel leakage alarm function.

[0004] According to the working principle, the fuel leakage alarm sensor is usually divided into capacitive, resistive or optical types. The working principle of the capacitive fuel leakage alarm sensor is that the liquid level change between the two poles of the sensor causes the capacitance change between the electrodes. During actual installation, due to the small installation space of the sensor, sometimes the sensor needs to be placed horizontally. When the sensor is placed horizontally, as Figure 3 shown, the liquid level needs to reach the middle electrode of the sensor before the sensor can receive the signal. If the fuel leakage amount is small and the liquid level is discharged before reaching the middle electrode of the sensor, the sensor cannot realize the fuel leakage alarm function. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a fuel distribution joint, which realizes the leakage alarm and oil drainage functions while integrating the total incoming and return oil channels, and can also solve the problem that when the fuel leakage alarm sensor is used in a horizontal state, the liquid level does not reach the middle electrode due to small fuel leakage amount and the alarm cannot be carried out.

[0006] In order to achieve the above purpose, the utility model is realized by the following technical solutions:

[0007] In a first aspect, an embodiment of the utility model provides a fuel distribution joint, including a distribution block body. A fuel return oil channel, a leakage return oil channel and a fuel incoming oil channel are sequentially arranged in the distribution block body from top to bottom; a fuel leakage alarm sensor is installed on the leakage return oil channel. A leakage incoming oil port and a leakage outgoing oil port are arranged on the leakage return oil channel. The height of the leakage incoming oil port is lower than that of the leakage outgoing oil port, and the height of the leakage outgoing oil port is higher than the middle electrode of the fuel leakage alarm sensor.

[0008] As a further technical solution, the axes of the fuel return passage, the leakage return passage, and the fuel inlet passage are parallel.

[0009] As a further technical solution, the top of the leakage inlet is lower than the bottom of the leakage outlet.

[0010] As a further technical solution, the bottom of the leakage inlet is tangentially arranged with the lower surface of the leakage return passage.

[0011] As a further technical solution, the bottom of the leakage outlet is higher than the middle electrode of the fuel leakage alarm sensor.

[0012] As a further technical solution, the fuel return passage is connected to the engine return pipe, and the fuel inlet passage is connected to the engine inlet pipe.

[0013] As a further technical solution, the engine return oil port on the fuel return passage and the engine inlet oil port on the fuel inlet passage are on the same vertical plane.

[0014] As a further technical solution, the leakage outlet is connected to the oil drain collecting oil passage.

[0015] As a further technical solution, the outlet of the fuel return passage and the inlet of the fuel inlet passage are arranged on the same side of the distribution block.

[0016] As a further technical solution, when the engine is running normally, the leaked fuel enters the leakage return passage from the leakage inlet and enters the oil drain collecting oil passage through the leakage outlet; when the engine stops and drains oil, the fuel is discharged from the leakage inlet.

[0017] The beneficial effects of the above embodiments of the present invention are as follows:

[0018] The fuel distribution joint provided by the present invention can integrate the functions of fuel inlet, return, and leakage detection. Since the upper plane of the leakage inlet is lower than the lower plane of the leakage outlet, and at the same time the lower plane of the leakage outlet is higher than the middle electrode of the sensor, when the engine is running normally and oil leakage occurs, the fuel liquid level is higher than the middle electrode of the sensor, ensuring that an alarm can be given; the lower plane of the leakage inlet is tangent to the lower plane of the leakage return channel. Therefore, when the engine stops and drains oil, oil is discharged from the leakage inlet to ensure complete drainage.

[0019] The fuel distribution joint provided by the present invention has a high degree of integration, strong feasibility, and is convenient for compact layout of the oil circuit. While integrating the total inlet and return oil passages, it can also realize leakage alarm and leakage functions, improving the functionality and application range of the fuel distribution joint. Description of the Drawings

[0020] The accompanying drawings of the specification, which form a part of the present utility model, are used to provide a further understanding of the present utility model. The schematic embodiments of the present utility model and their descriptions are used to explain the present utility model and do not constitute an improper limitation to the present utility model.

[0021] Figure 1 is the front view of the fuel distribution joint of the present utility model;

[0022] Figure 2 is the rear sectional view of the fuel distribution joint of the present utility model;

[0023] Figure 3 is the structural schematic diagram of the existing fuel leakage alarm sensor.

[0024] The schematic diagram is only for illustration;

[0025] Among them, 1. distribution block; 2. fuel return oil passage; 3. leakage return oil passage; 4. fuel inlet oil passage; 5. engine return oil pipe; 6. engine inlet oil pipe; 7. leakage oil pipe; 8. oil collecting passage for leakage oil; 9. leakage oil outlet; 10. leakage oil inlet; 11. engine return oil port; 12. engine inlet oil port; 13. fuel leakage alarm sensor; 14. intermediate electrode. Detailed implementation manners

[0026] It should be noted that the following detailed descriptions are all exemplary and are intended to provide a further description of the present utility model. Unless otherwise specified, all technical and scientific terms used in the present utility model have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present utility model belongs.

[0027] Embodiment 1

[0028] In a typical implementation manner of the present utility model, as Figure 1 and Figure 2 shown, a fuel distribution joint is provided, including a distribution block 1. Inside the distribution block 1, a fuel return oil passage 2, a leakage return oil passage 3, and a fuel inlet oil passage 4 are sequentially arranged from top to bottom; a fuel leakage alarm sensor is installed on the leakage return oil passage 3. A leakage oil inlet 10 and a leakage oil outlet 9 are provided on the leakage return oil passage 3. The height of the leakage oil inlet 10 is lower than the height of the leakage oil outlet 9, and the height of the leakage oil outlet 9 is higher than the intermediate electrode of the fuel leakage alarm sensor.

[0029] In this embodiment, the axes of the fuel return oil passage 2, the leakage return oil passage 3, and the fuel inlet oil passage 4 are parallel. By arranging them in parallel, after the fuel distribution joint is connected to the pipeline, the overall pipeline layout is more reasonable.

[0030] In this embodiment, the top of the leakage inlet 10 is lower than the bottom of the leakage outlet 9. The leakage inlet 10 is connected to the leakage oil pipe 7, and the leakage outlet 9 is connected to the oil drainage collection oil passage 8. Since the height of the leakage outlet 9 is relatively high, the fuel leaked in the leakage oil return passage 3 can only be discharged from the leakage outlet 9 into the oil drainage collection oil passage 8 when it reaches the bottommost part of the leakage outlet 9, which is equivalent to raising the fuel liquid level in the leakage oil return passage 3.

[0031] Furthermore, the bottom of the leakage outlet 9 is higher than the middle electrode of the fuel leakage alarm sensor, which can ensure that the fuel liquid level in the leakage oil return passage 3 is higher than the middle electrode of the fuel leakage alarm sensor, and the sensor can receive signals to achieve alarm.

[0032] In this embodiment, the bottom of the leakage inlet 10 is tangent to the lower surface of the leakage oil return passage 3. When the engine stops for oil drainage, the leakage inlet 10 can be used as an oil drainage port to ensure that the fuel in the leakage oil return passage 3 can be drained completely.

[0033] In this embodiment, the engine oil return port 11 on the fuel oil return passage 2 is connected to the engine oil return pipe 5, and the engine oil inlet 12 on the fuel oil inlet passage 4 is connected to the engine oil inlet pipe 6.

[0034] Furthermore, the engine oil return port 11 on the fuel oil return passage 2 and the engine oil inlet 12 on the fuel oil inlet passage 4 are on the same vertical plane.

[0035] Furthermore, the outlet of the fuel oil return passage 2 and the inlet of the fuel oil inlet passage 4 are arranged on the same side of the distribution block.

[0036] In this embodiment, one end of the fuel leakage alarm sensor 13 with the middle electrode 14 extends into the leakage oil return passage 3 of the distribution block 1. When the engine is running normally, the leaked fuel enters the leakage oil return passage 3 from the leakage inlet 10 and is discharged from the leakage outlet 9 of the leakage oil return passage. Since the height of the leakage outlet 9 is higher than the middle electrode of the sensor, real-time alarm monitoring can be achieved; when the engine stops for oil drainage, the fuel is discharged from the leakage inlet 10.

[0037] The fuel distribution joint provided by the present utility model can integrate functions of oil inlet, oil return and leakage detection. Since the upper plane of the leakage inlet is lower than the lower plane of the leakage outlet, and at the same time the lower plane of the leakage outlet is higher than the middle electrode of the sensor, when the engine is running normally and oil leakage occurs, the fuel liquid level is higher than the middle electrode of the sensor to ensure that an alarm can be given; the lower plane of the leakage inlet is tangent to the lower plane of the leakage oil return passage. Therefore, when the engine stops for oil drainage, oil is drained from the leakage inlet to ensure complete oil drainage.

[0038] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. For those skilled in the art, the present utility model may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A fuel distribution connector, characterized in that: It includes a distribution block, in which a fuel return channel, a leakage return channel and a fuel inlet channel are arranged in sequence from top to bottom; a fuel leakage alarm sensor is installed on the leakage return channel, and a leakage inlet and a leakage outlet are arranged on the leakage return channel, the height of the leakage inlet is lower than the height of the leakage outlet, and the height of the leakage outlet is higher than the middle electrode of the fuel leakage alarm sensor.

2. The fuel distribution connector according to claim 1, characterized in that: The axes of the fuel return passage, the leakage return passage and the fuel inlet passage are parallel.

3. The fuel distribution connector according to claim 1, characterized in that: The top of the leakage oil inlet is lower than the bottom of the leakage oil outlet.

4. The fuel distribution connector according to claim 1, characterized in that: The bottom of the leakage oil inlet is arranged tangent to the lower surface of the leakage oil return channel.

5. The fuel distribution connector according to claim 1, characterized in that: The bottom of the oil leakage outlet is higher than the middle electrode of the fuel leakage alarm sensor.

6. The fuel distribution connector according to claim 1, characterized in that: The fuel return passage is connected to the engine fuel return pipe, and the fuel inlet passage is connected to the engine fuel inlet pipe.

7. The fuel distribution connector according to claim 6, characterized in that: The engine oil return port on the fuel return passage and the engine oil inlet port on the fuel inlet passage are on the same vertical plane.

8. The fuel distribution connector according to claim 1, characterized in that: The leakage oil inlet is connected to the leakage oil pipe, and the leakage oil outlet is connected to the leakage oil collection channel.

9. The fuel distribution connector according to claim 1, characterized in that: The outlet of the fuel return passage and the inlet of the fuel inlet passage are arranged on the same side of the distribution block.

10. The fuel distribution connector according to claim 1, characterized in that: When the engine is operating normally, the leaked fuel enters the leakage oil return channel from the leakage oil inlet and enters the leakage oil collection channel through the leakage oil outlet; when the engine is stopped and leaking oil, the fuel is discharged from the leakage oil inlet.

Images