High-speed pump lubricating system

Abstract

The utility model discloses a high-speed pump lubricating system which comprises an oil pool, an oil inlet pipeline and a closed loop circulation structure which are integrated in a transmission case, a main oil pump, an oil cooler and an oil filter are sequentially arranged on the oil inlet pipeline, and the tail end of the oil inlet pipeline is divided into two paths, the other path forms oil film lubrication on the high-speed sliding bearing through an oil hole; lubricating return oil directly returns to an oil pool through gravity backflow. The main oil pump is connected in parallel with the auxiliary oil pump and the one-way valve; an oil inlet pipeline is provided with a thermometer and a pressure gauge to achieve real-time monitoring, and the oil pressure and the oil temperature are controlled to be 0.2-0.6 MPa and 60-80 DEG C respectively. According to the embodiment, by optimizing the nozzle hole diameter, the oil hole proportion and the closed-loop oil way design, the problems that a traditional lubricating system is uneven in lubrication, too high in temperature rise, frequent in maintenance and the like are solved, the lubricating efficiency is remarkably improved, noise and abrasion are reduced, the service life of a bearing is prolonged, and the lubricating system is suitable for high-rotating-speed and high-load industrial pump equipment.

Description

Technical Field

[0001] This utility model relates to the field of high-speed pump technology, and specifically to a high-speed pump lubrication system. Background Technology

[0002] As a core piece of equipment in modern industry, the performance of the lubrication system of high-speed pumps directly determines the operating efficiency, stability and service life of the equipment. In the existing technology, the lubrication system of high-speed pumps generally has the following problems: (1) The traditional nozzle orifice design is unreasonable, resulting in insufficient or excessive supply of lubricating oil, and the key parts cannot form an effective oil film, resulting in low lubrication efficiency and aggravated friction loss; (2) Insufficient lubrication or uneven distribution of oil circuit causes local overheating, excessive bearing temperature rise, shortening bearing life and increasing the risk of failure; (3) The nozzle is easy to be blocked or worn, requiring frequent replacement, and the lubrication system has a complex structure, making disassembly and maintenance difficult and maintenance costs high; (4) Uneven lubrication leads to aggravated mechanical vibration, generating high-decibel noise, affecting the working environment.

[0003] To address the above problems, existing technologies have attempted to improve the situation by optimizing the viscosity of the lubricating oil or increasing the power of the oil pump, but neither has fundamentally solved the problem of matching the nozzle orifice diameter with the oil circuit design. Utility Model Content

[0004] To improve the overall performance of high-speed pumps, this invention provides a high-speed pump lubrication system.

[0005] The technical solution adopted by this utility model is as follows: a high-speed pump lubrication system includes an oil sump formed inside a transmission box and an oil inlet pipe formed by oil passages opened inside the transmission box; the oil inlet pipe integrates a main oil pump, an oil cooler, and an oil filter; the end of the oil inlet pipe is divided into two paths: the first path is aimed at a medium-speed or low-speed rolling bearing through a nozzle for spray lubrication, and the second path is connected to a high-speed sliding bearing through an oil hole to form an oil film lubrication; the lubricating oil from the rolling bearing and the sliding bearing returns to the oil sump by gravity, forming a closed-loop circulation.

[0006] Preferably, the main oil pump is connected in parallel with a secondary oil pump and a check valve, and the check valve is configured to allow lubricating oil to flow from the secondary oil pump to the oil inlet pipeline.

[0007] Preferably, a thermometer and a pressure gauge are provided on the oil inlet pipe, with the thermometer positioned near the oil sump and the pressure gauge positioned near the nozzle.

[0008] Preferably, the nozzle has a plurality of injection holes with a diameter of 0.8 to 1.0 mm.

[0009] Preferably, the diameter ratio of the X oil hole to the Y oil hole at the end of the oil hole is 5:2. The X oil hole generates a lubricating film on the inner wall of the sliding bearing, and the Y oil hole generates a lubricating film between the sliding bearing and the thrust plate.

[0010] Preferably, the oil pressure control range is 0.2~0.6MPa, and the oil temperature control range is 60~80℃.

[0011] This utility model has the following beneficial effects:

[0012] 1. Compact structure and optimized adaptability: The lubrication pipeline integrates components such as the main oil pump, oil cooler, and filter, simplifying the pipeline layout and reducing the risk of leakage; the nozzle and oil hole branch design adapts to the lubrication needs of bearings with different speeds, improving the system's versatility and adaptability to operating conditions.

[0013] 2. Enhanced system redundancy and reliability: The design of the main oil pump in parallel with the auxiliary oil pump and the check valve allows the auxiliary oil pump to automatically supplement oil supply in the event of a failure of the main oil pump or high load conditions. The check valve prevents backflow of lubricating oil, ensuring continuous and stable lubrication and significantly reducing the risk of equipment downtime caused by oil pressure fluctuations or oil supply interruptions.

[0014] 3. Significantly improved lubrication efficiency and uniformity: By limiting the nozzle's oil injection orifice diameter to 0.8~1.0mm, the amount of lubricating oil injected is precisely controlled, avoiding over-lubrication due to excessively large orifice diameter or insufficient lubrication due to excessively small orifice diameter. This ensures the formation of a uniform oil film on key friction surfaces, reduces friction loss, and improves lubrication efficiency. The X and Y oil holes at the end of the oil holes are designed with a 5:2 diameter ratio, providing targeted lubrication for the inner wall of the sliding bearing and the contact surface of the thrust plate, respectively. This optimizes oil film distribution, reduces the risk of local overheating, and extends the bearing's service life.

[0015] 4. Effective suppression of temperature rise and noise: The oil inlet pipeline integrates an oil cooler to control the lubricating oil temperature in real time, avoiding excessive bearing temperature rise caused by insufficient lubrication or frictional heat generation; the closed-loop circulation system returns the lubricating oil directly to the oil sump through gravity return, reducing oil retention and foam generation. Combined with the optimized design of the nozzle and oil hole, it reduces mechanical vibration and noise, and improves the working environment. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the pipeline flow according to an embodiment of the present invention.

[0017] Figure 2 This is an assembly diagram of an embodiment of the present utility model.

[0018] Figure 3 This is a schematic diagram of the lubrication of the rolling bearing and the sliding bearing in an embodiment of this utility model.

[0019] Figure 4This is a schematic diagram of the nozzle in an embodiment of this utility model.

[0020] 1. Transmission box; 2. Oil sump; 3. Oil inlet pipe; 4. Main oil pump; 5. Oil cooler; 6. Oil filter; 7. Nozzle; 701. Rolling bearing; 8. Oil hole; 9. X oil hole; 902. Sliding bearing; 10. Auxiliary oil pump; 11. Check valve; 12. Thermometer; 13. Pressure gauge; 14. Detailed Implementation

[0021] The present invention will be further described below with reference to the embodiments and accompanying drawings.

[0022] In the embodiments, such as Figures 1-2 The diagram shows a lubrication system for an RCP-V1 high-speed pump, comprising an oil sump 2 formed inside a transmission housing 1, and an oil inlet pipe 3 formed by oil passages opened within the transmission housing 1. The oil inlet pipe 3 integrates a main oil pump 4, an oil cooler 5, and an oil filter 6. The end of the oil inlet pipe 3 is divided into two paths: the first path is directed through a nozzle 7 to a medium-speed or low-speed rolling bearing 8 for jet lubrication, and the second path is connected through an oil hole 9 to a high-speed sliding bearing 10 to form an oil film lubrication. The lubricating oil from the rolling bearing 8 and the sliding bearing 10 returns to the oil sump 2 by gravity, forming a closed-loop circulation. This embodiment achieves integrated functions of lubricating oil pressurization, cooling, and filtration by integrating the oil sump 2 and oil inlet pipeline 3 within the transmission box 1, combined with the series layout of the main oil pump 4, oil cooler 5, and oil filter 6. The branched lubrication design with nozzles 7 spraying rolling bearings 8 and oil holes 9 lubricating sliding bearings 10 adapts to the lubrication needs of bearings with different speeds, improving the specificity of lubrication. The closed-loop circulation directly recovers lubricating oil back to the oil sump 2 through gravity return, reducing oil waste, lowering the risk of system contamination, and simplifying the pipeline structure.

[0023] In the embodiments, such as Figure 1 As shown, the main oil pump 4 is connected in parallel with an auxiliary oil pump 11 and a check valve 12. The check valve 12 is configured to allow lubricating oil to flow from the auxiliary oil pump 11 to the oil inlet line 3. The main oil pump 4, auxiliary oil pump 11, and check valve 12 in parallel form a redundant oil supply mechanism. When the main oil pump 4 fails or is under high load conditions, the auxiliary oil pump 11 automatically supplements the oil supply, and the check valve 12 prevents the lubricating oil from flowing back, ensuring stable lubrication pressure and avoiding dry friction of the bearings or equipment shutdown caused by interruption of oil supply, significantly improving system reliability and emergency response capabilities.

[0024] In the embodiments, such as Figure 1As shown, a thermometer 13 and a pressure gauge 14 are installed on the oil inlet pipe 3. The oil inlet pipe 3 is located near the oil sump 2, and the pressure gauge 14 is located near the nozzle 7. The thermometer 13 and pressure gauge 14 on the oil inlet pipe 3 are used to monitor the oil temperature and oil pressure in real time, realizing dynamic monitoring of the lubrication status. The pressure gauge 14 is close to the nozzle 7 to accurately reflect the pressure at the injection end, and the thermometer 13 is close to the oil sump 2 to accurately measure the overall oil temperature.

[0025] In the embodiments, such as Figure 4 As shown, the nozzle 7 has several oil injection holes 701 with a diameter of 0.8~1.0mm. Generally speaking, if the diameter of the oil injection holes 701 of the nozzle 7 is too large, it will result in excessive lubrication, which may lead to excessive oil injection and over-lubrication; if the diameter of the oil injection holes 701 is too small, it may result in insufficient oil injection, which will prevent sufficient lubrication of critical parts, and the small diameter is more likely to cause clogging of the nozzle 7. Using oil injection holes 701 with a diameter of 0.8~1.0mm in the nozzle 7 of the high-speed pump RCP-V1 series is better for the performance of the high-speed pump. The oil injection holes 701 are determined by the total cross-sectional area of ​​the nozzle 7.

[0026] In the embodiments, such as Figure 3 As shown, the diameter ratio of the X oil hole 901 to the Y oil hole 902 at the end of the oil hole 9 is 5:2, which is 5mm and 2mm respectively. The X oil hole 901 generates a lubricating film on the inner wall of the sliding bearing 10, and the Y oil hole 902 generates a lubricating film between the sliding bearing 10 and the thrust plate. The precise proportional design of the X oil hole 901 and the Y oil hole 902 optimizes the distribution of oil film on the radial and thrust surfaces, reducing the coefficient of friction; the precise oil hole size avoids excessive or insufficient lubrication, extending the bearing life.

[0027] In this embodiment, the oil pressure control range is 0.2~0.6MPa, and the oil temperature control range is 60~80℃. Oil pressure control ensures that the lubricating oil stably forms an oil film under high-speed operating conditions, avoiding insufficient lubrication due to excessively low pressure or sealing leakage caused by excessively high pressure. The oil temperature control range is dynamically adjusted by the cooler 5 to prevent excessively high oil temperature from causing viscosity decrease or excessively low oil temperature from causing insufficient fluidity, thus maintaining lubrication performance and equipment operational stability.

[0028] Obviously, the above embodiments of this utility model are merely examples for illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Other obvious variations or modifications derived from the essential spirit of the present utility model still fall within the protection scope of the present utility model.

Claims

1. A high speed pump lubrication system characterized by, An oil pool (2) formed inside a transmission case (1), and an oil inlet pipeline (3) composed of oil channels opened in the transmission case (1); A main oil pump (4), an oil cooler (5) and an oil filter (6) are integrated on the oil inlet pipeline (3); The end of the oil inlet pipeline (3) is divided into two paths: the first path sprays lubrication through a nozzle (7) aimed at a medium or low speed rolling bearing (8), and the second path forms oil film lubrication through an oil hole (9) connected to a high speed sliding bearing (10); The lubrication and oil return of the rolling bearing (8) and the sliding bearing (10) returns to the oil pool (2) through gravity return, forming a closed loop circulation.

2. The high speed pump lubrication system of claim 1, wherein, The main oil pump (4) is connected in parallel with a secondary oil pump (11) and a check valve (12), and the check valve (12) is configured to allow lubricating oil to flow from the secondary oil pump (11) to the oil inlet pipeline (3).

3. The high speed pump lubrication system of claim 1, wherein, A thermometer (13) and a pressure gauge (14) are arranged on the oil inlet pipeline (3), the thermometer (13) is arranged near the oil pool (2), and the pressure gauge (14) is arranged near the nozzle (7).

4. The high speed pump lubrication system of claim 1, wherein, The nozzle (7) has a plurality of oil injection holes (701) with a pore size of 0.8-1.0 mm.

5. The high speed pump lubrication system of claim 1, wherein, The ratio of the diameters of X oil hole (901) and Y oil hole (902) at the end of the oil hole (9) is 5:2, the X oil hole (901) generates a lubricating film on the inner wall of the sliding bearing (10), and the Y oil hole (902) generates a lubricating film between the sliding bearing (10) and the thrust disc.

6. The high speed pump lubrication system of claim 1, wherein, The oil pressure control range is 0.2-0.6 MPa, and the oil temperature control range is 60-80℃.

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