A turbocharger built-in oil tank oil supply system

Abstract

The utility model relates to turbocharger technical field, concretely relates to a turbocharger built -in oil tank oil supply system, including oil inlet flange, flange assembly, gasket and bearing shell, the inside of bearing shell is provided with a plurality of built -in oil tank oil inlet pipeline and bearing shell intercommunication, gasket sets up between flange assembly and bearing shell, flange assembly includes connecting flange, throttle orifice plate, check valve piece and baffle ring, the surface of connecting flange is provided with oil inlet pressure measurement passageway and a plurality of built -in oil tank pressure measurement passageway, throttle orifice plate sets up in the inside of oil inlet pressure measurement passageway, baffle ring sets up at the end face of throttle orifice plate, the both sides of connecting flange are provided with pressure measurement hole stopper, through the setting of above -mentioned structure, the problem of turbocharger emergency shutdown when built -in oil tank system prevents electric pump failure, the rotor and bearing between the dry friction under the condition of insufficient or broken oil of the reduced amount of sliding oil, lead to bearing and rotor burnout, turbocharger failure has been solved.

Description

Technical Field

[0001] This utility model relates to the field of turbocharger technology, and in particular to a turbocharger built-in oil tank oil supply system. Background Technology

[0002] Turbochargers are typical components for diesel engines. Working together with a diesel engine, they can effectively increase the engine's output power and reduce its fuel consumption.

[0003] However, the existing built-in oil tank system prevents the electric pump from failing. In case of emergency shutdown of the booster, the reduced amount of lubricating oil, insufficient lubricating oil pressure, or oil cut-off will cause dry friction between the rotor and bearing, resulting in the bearing and rotor burning out and the booster failing. Summary of the Invention

[0004] The purpose of this utility model is to provide a turbocharger built-in oil tank supply system, which solves the problem that when the electric pump fails or the turbocharger is shut down in an emergency, dry friction occurs between the rotor and bearing due to reduced lubricating oil volume, insufficient lubricating oil pressure, or oil cut-off, which leads to bearing and rotor burnout and turbocharger failure.

[0005] To achieve the above objectives, this utility model provides a turbocharger built-in oil tank supply system, including an inlet flange, a flange assembly, a gasket, and a bearing housing. The bearing housing contains several built-in oil tanks that are interconnected. A return oil passage is provided above each built-in oil tank. The inlet pipeline is connected to the bearing housing. The flange assembly is located on one side of the bearing housing. The gasket is located between the flange assembly and the bearing housing. The inlet flange is located on one side of the flange assembly. A return oil flow channel sealing plate is provided above the bearing housing. The flange assembly includes a connecting flange, a throttling orifice plate, a one-way valve plate, and a retaining ring. The surface of the connecting flange has an inlet pressure testing passage and several built-in oil tank pressure testing passages. The end face of the connecting flange has a sealing groove and a recess. The throttling orifice plate is located inside the inlet pressure testing passage. The retaining ring is located on the end face of the throttling orifice plate. Pressure testing port plugs are provided on both sides of the connecting flange.

[0006] The oil return passage is threadedly connected to an oil return channel, the bearing housing has an oil cavity inside, an oil return port is provided below the oil cavity, the oil cavity is connected to the oil return channel, and an oil inlet pipe is provided on the outside of the bearing housing.

[0007] The turbocharger's built-in oil tank supply system also includes several throttle nuts, which are respectively installed inside the corresponding oil return passages. The outer side of the throttle nut is provided with external threads, and the inner side of the throttle nut is provided with internal hexagonal sockets and throttle holes.

[0008] This utility model discloses a turbocharger internal oil tank supply system. When the electric pump stops working, the internal oil tank supply system starts working. The lubricating oil in the internal oil tank flows back through the flow interface formed by the connecting flange, the groove, and the gasket. At this time, the one-way valve plate closes due to gravity and the change in the direction of lubricating oil flow, and fits tightly against the connecting flange. The lubricating oil enters the bearing system through the oil inlet pipe, maintaining continuous lubrication of the bearing and rotor assembly, thus protecting the bearing and rotor. At the same time, the barrier structure formed by the height difference between the gasket and the internal oil tank effectively prevents impurities in the internal oil tank from entering the bearing system and damaging the bearing and rotor. Attached Figure Description

[0009] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0010] Figure 1 This is a schematic diagram of the structure of this utility model;

[0011] Figure 2 for Figure 1 Schematic diagram of the middle flange assembly;

[0012] Figure 3 for Figure 1 Schematic diagram of the structure of the bearing housing;

[0013] Figure 4 for Figure 1 Schematic diagram of the structure of the throttling nut

[0014] 1-Oil inlet flange, 2-Flange assembly, 2a-Flange, 2b-Sealing groove, 2c-Throttle orifice plate, 2d-One-way valve plate, 2e-Retaining ring, 2f-Pressure test hole plug, 2g-Groove, 2h-Built-in oil tank pressure test passage, 2i-Oil inlet pressure test passage, 3-Gasket, 4-Bearing housing, 4a-Oil inlet pipeline, 4b-Built-in oil tank, 4c-Return oil passage, 4d-Return oil flow channel, 4e-Oil cavity, 4f-Return oil port, 5-Oil tank sealing plate, 6-Throttle nut, 6a-Internal hexagon, 6b-External thread, 6c-Throttle passage hole, 7-Return oil flow channel sealing plate. Detailed Implementation

[0015] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0016] Please see Figures 1 to 4 This utility model provides a turbocharger built-in oil tank supply system, including an oil inlet flange 1, a flange assembly 2, a gasket 3, and a bearing housing 4. The bearing housing 4 has several built-in oil tanks 4b internally, which are interconnected. A return oil passage 4c is provided above each built-in oil tank 4b. An oil inlet pipe 4a is connected to the bearing housing 4. The flange assembly 2 is located on one side of the bearing housing 4. The gasket 3 is located between the flange assembly 2 and the bearing housing 4. The oil inlet flange 1 is located on one side of the flange assembly 2. On the side, an oil return channel sealing plate 7 is provided above the bearing housing 4. The flange assembly 2 includes a connecting flange 2a, a throttling orifice plate 2c, a one-way valve plate 2d, and a retaining ring 2e. The surface of the connecting flange 2a is provided with an oil inlet pressure measuring passage 2i and several built-in oil tank pressure measuring passages 2h. The end face of the connecting flange 2a is provided with a sealing groove 2b and a groove 2g. The throttling orifice plate 2c is located inside the oil inlet pressure measuring passage 2i. The retaining ring 2e is located on the end face of the throttling orifice plate 2c. Pressure measuring hole plugs 2f are provided on both sides of the connecting flange 2a.

[0017] In this embodiment, the connecting flange 2a has a sealing ring structure at the oil inlet end, which cooperates with the oil inlet flange 1. The connecting flange 2a has a stepped structure, and the one-way valve plate 2d has a stepped structure at the surface where it mates with the connecting flange 2a, achieving a certain sealing effect. When the oil supply system of the built-in oil tank 4b starts working, the lubricating oil in the built-in oil tank 4b flows back through the flow interface formed by the connecting flange 2a, the groove 2g, and the gasket 3. At this time, the one-way valve plate 2d closes due to gravity and the change in the direction of lubricating oil flow, and fits tightly with the connecting flange 2a. The lubricating oil enters the bearing system through the oil inlet pipe 4a, maintaining continuous lubrication of the bearing and rotor assembly, thus protecting the bearing and rotor. At the same time, the barrier structure formed by the height difference between the gasket 3 and the built-in oil tank 4b effectively prevents impurities in the built-in oil tank 4b from entering the bearing system and damaging the bearing and rotor.

[0018] Furthermore, the oil return passage 4c is threadedly connected to the oil return flow channel 4d, the bearing housing 4 is provided with an oil cavity 4e inside, the oil cavity 4e is provided with an oil return port 4f below it, the oil cavity 4e is connected to the oil return flow channel 4d, and the bearing housing 4 is provided with an oil inlet pipe 4a on the outside.

[0019] In this embodiment, lubricating oil enters the oil inlet pipe 4a and the built-in oil tank 4b through the throttling orifice plate 2c and the one-way valve plate 2d at the connecting flange 2a. At this time, the one-way valve plate 2d is in the open state due to the flow of lubricating oil. The lubricating oil in the oil inlet pipe 4a enters the bearing system. After a period of time, the lubricating oil in the built-in oil tank 4b fills the built-in oil tank 4b. The lubricating oil enters the built-in oil tank 4b of the bearing housing 4 through the return oil channel 4d and flows out through the return oil port 4f.

[0020] Furthermore, the turbocharger's built-in oil tank supply system also includes several throttle nuts 6, which are respectively disposed inside the corresponding oil return passage 4c. The outer side of the throttle nut 6 is provided with an external thread 6b, and the inner side of the throttle nut 6 is provided with an internal hexagonal socket 6a and a throttle passage 6c.

[0021] In this embodiment, the throttle nut 6 is threadedly engaged with the oil return passage 4c via the external thread 6b. The internal hexagonal socket 6a facilitates the installation of the throttle nut 6. The throttle nut 6 has a through hole in the center for throttling the lubricating oil in the built-in oil tank 4b.

[0022] The above-disclosed embodiments are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of the present utility model. Those skilled in the art can understand that implementing all or part of the above-described embodiments and making equivalent changes in accordance with the claims of the present utility model are still within the scope of the utility model.

Claims

1. A turbocharger built-in fuel tank supply system, characterized in that, The bearing housing includes an oil inlet flange, a flange assembly, a gasket, and a bearing housing. The bearing housing has several internal oil tanks that are interconnected. An oil return passage is provided above each internal oil tank. An oil inlet pipe is provided on the outside of the bearing housing and is connected to the bearing housing. The flange assembly is located on one side of the bearing housing. The gasket is located between the flange assembly and the bearing housing. The oil inlet flange is located on one side of the flange assembly. An oil return passage sealing plate is provided above the bearing housing. The flange assembly includes a connecting flange, a throttling orifice plate, a one-way valve plate, and a retaining ring. The surface of the connecting flange is provided with an oil inlet pressure measurement passage and several built-in oil tank pressure measurement passages. The end face of the connecting flange is provided with a sealing groove and a recess. The throttling orifice plate is located inside the oil inlet pressure measurement passage. The retaining ring is located on the end face of the throttling orifice plate. Pressure measurement hole plugs are provided on both sides of the connecting flange.

2. The turbocharger built-in oil tank supply system as described in claim 1, characterized in that, The oil return passage is threadedly connected to an oil return channel, and an oil cavity is provided inside the bearing housing. An oil return port is provided below the oil cavity, and the oil cavity is connected to the oil return channel.

3. The turbocharger built-in oil tank supply system as described in claim 2, characterized in that, The turbocharger's built-in oil tank supply system also includes several throttle nuts, which are respectively disposed inside the corresponding oil return passages. The outer side of the throttle nut is provided with external threads, and the inner side of the throttle nut is provided with internal hexagonal sockets and throttle holes.

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