阅读说明：本技术 一种流量与压力可调的油气润滑冷却方法及装置 (Flow and pressure adjustable oil-gas lubrication cooling method and device ) 是由 郝小龙 唐慧慧 张明根 赵经明 王学 王志峰 朱凤琦 黄明明 岳国森 于 2021-06-30 设计创作，主要内容包括：本发明涉及一种流量与压力可调的油气润滑冷却方法及装置,通过引入高压气源,气源一方面推动油腔活塞挤压润滑油流动供油,另一方面高压气源通过超音速喷嘴喷胀产生低温高速气流,高速气流引射带动润滑油流动产生润滑油气,低温油气同时解决相关设备的润滑与冷却作用,该设备中通过调节流量阀压力可以控制润滑油供油量,通过调节压力阀可以控制喷嘴前气流压力,进而控制该设备供气量。(The invention relates to a flow and pressure adjustable oil-gas lubrication cooling method and a device, wherein a high-pressure gas source is introduced, the gas source pushes an oil cavity piston to extrude lubricating oil to flow for oil supply, the high-pressure gas source generates low-temperature high-speed airflow through supersonic nozzle spraying and expanding, the high-speed airflow drives the lubricating oil to flow for generating lubricating oil gas, the low-temperature oil gas solves the lubricating and cooling effects of related equipment, the oil supply amount of the lubricating oil can be controlled by adjusting the pressure of a flow valve in the equipment, the pressure of the airflow in front of the nozzle can be controlled by adjusting a pressure valve, and the air supply amount of the equipment is further controlled.)

1. An oil-gas lubrication cooling method with adjustable flow and pressure is characterized in that:

the lubricating oil is input into the output channel by using an air source in a mode that a piston extrudes the lubricating oil;

and the air source provides airflow with preset low temperature and flow speed to the output channel in a supersonic nozzle spraying and expanding mode, and the airflow is used for ejecting and driving lubricating oil to flow in the output channel to generate lubricating oil gas for output.

2. The method of claim 1, wherein: the pressure of the flow regulating valve is used for regulating and controlling the oil supply amount of the lubricating oil in the output channel, and the pressure of the airflow in front of the supersonic nozzle is controlled by the pressure regulating valve, so that the air supply amount is controlled.

3. The utility model provides a flow and pressure adjustable oil-gas lubrication cooling device which characterized in that: the device comprises a shell, an end cover, a guide rod, a piston, a pressure regulating valve, a flow regulating valve, a plug and a standard connecting piece;

one end of the shell is a blind cavity end, the other end of the shell is a flange end, and the end cover is fixedly connected with the flange end; the piston is sleeved on a guide rod positioned in the shell, and an oil cavity is formed by the piston, the shell and a cavity between the piston and the guide rod; the guide rod is of a mandrel structure with a flange plate at one end, an air passage is formed in the mandrel, the supersonic nozzle structure is arranged on the air passage, the pressure regulating valve is installed in the flange plate, the guide rod flange plate is installed and fixed between the shell and the end cover, and the other end of the guide rod is used as an output end and penetrates through the oil cavity and the blind cavity end of the shell; an annular oil cavity is formed between the guide rod and the blind cavity end, and an oil channel is arranged between the annular oil cavity and the downstream of the supersonic nozzle structure; a flow regulating valve and a plug are arranged at the blind cavity end of the shell; the end cover, the guide rod flange plate, and a cavity between the shell and the piston form an air cavity; the pressure regulating valve is used for inputting gas input from the end cover to the air passage according to preset pressure, the gas input into the air cavity drives the piston to extrude lubricating oil in the oil cavity, and the flow regulating valve controls the oil quantity entering the annular oil cavity.

4. The apparatus of claim 3, wherein: the pressure regulating valve comprises a valve seat, a valve core, a regulating nut and a compression spring;

the external thread of the outer wall of the valve seat is used for being connected with the guide rod, the internal thread of the inner wall of the valve seat is used for installing an adjusting nut, the compression spring is sleeved on the valve core, two ends of the compression spring are respectively contacted with the adjusting nut and the valve core, the adjusting nut is screwed to enable the ball head of the valve core to abut against the conical surface of the valve seat to form sealing, and the pressure adjusting valve is opened when the air pressure applied to the front end of the ball head of the valve core is larger than the elastic force of the compression spring.

5. The apparatus of claim 4, wherein: the compression amount of the compression spring is controlled by adjusting the position of the adjusting nut, and then the opening pressure of the pressure adjusting valve is controlled.

6. The apparatus of claim 3, wherein: the flow regulating valve comprises a valve seat, a valve core, a compression spring, a sealing plug and a sealing gasket;

the outer wall of the valve seat is provided with external threads, the center of the valve seat is provided with a through hole for installing a valve core, a cavity is arranged in one side of the valve seat, internal threads are arranged in the cavity and used for installing a sealing plug, and the through hole is communicated with the cavity; the valve seat is connected with the shell through the external thread, and lubricating oil is prevented from leaking outwards through the sealing plug and the sealing gasket; the compression spring is sleeved on the valve core, one end of the valve core penetrates through the through hole, two ends of the compression spring are respectively contacted with the end part of the valve seat and the ball head, after the flow regulating valve is installed on the shell, the ball head of the valve core props against the conical surface on the shell to form sealing, and when the pressure of oil pressure applied to the front end of the ball head of the valve core is larger than the elastic force of the compression spring, the flow regulating valve is opened.

7. The apparatus of claim 6, wherein: the opening pressure of the flow regulating valve is controlled by controlling the compression amount of the compression spring, so that the regulation and control of the flow of the lubricating oil are realized.

8. The apparatus of claim 3, wherein: the structure of one end of the guide rod with the flange plate is formed by connecting two flange plates with different inner and outer diameters in series, the flange plate with the relatively large diameter is positioned on the outermost side and used for realizing connection and sealing with the shell and the end cover through the end face of the flange plate, and the inner cavity of the flange plate is communicated with the air inlet; the flange plate on the inner side is provided with internal threads for realizing the connection with the pressure regulating valve, and a vent hole is formed between the bottom of the flange plate on the outermost side and the air cavity.

9. The apparatus of claim 8, wherein: the vent holes are uniformly distributed relative to the bottom of the flange plate, and the total through-flow sectional area of the vent holes is larger than that of the pressure regulating valve.

10. The apparatus of claim 3, wherein: the oil passages are symmetrically arranged relative to the air passage, and the total through-flow sectional area of the oil passages is larger than that of the flow regulating valve.

11. The apparatus according to any one of claims 1-10, wherein: the device is suitable for gas supply pressure of 1-15 MPa and oil supply flow of 0-300 ml/min.

Technical Field

The invention relates to an oil-gas lubrication cooling device, in particular to an oil-gas lubrication cooling device with adjustable flow and pressure.

Background

In ultra-high speed rotating machinery supported by a rolling bearing, if oil-gas lubrication is adopted as a lubrication cooling method of the bearing, an auxiliary oil-gas lubrication cooling device is generally required. At present, general oil-gas lubrication cooling equipment consists of a precise lubricating oil conveying metering pump, an oil tank and an auxiliary air source, generally speaking, the equipment has large volume and weight, needs power supply and is inconvenient to install and maintain, and under the conditions of special use environment (such as no power supply condition), extremely compact installation space and extremely strict requirement on volume and weight, the general oil-gas lubrication cooling equipment is often used without any place.

Disclosure of Invention

The technical problem solved by the invention is as follows: provides an oil-gas lubrication cooling method and device with adjustable flow and pressure.

The technical scheme of the invention is as follows: an oil-gas lubrication cooling method with adjustable flow and pressure comprises the following steps:

the lubricating oil is input into the output channel by using an air source in a mode that a piston extrudes the lubricating oil;

and the air source provides airflow with preset low temperature and flow speed to the output channel in a supersonic nozzle spraying and expanding mode, and the airflow is used for ejecting and driving lubricating oil to flow in the output channel to generate lubricating oil gas for output.

Furthermore, the pressure regulation of the flow regulating valve controls the oil supply amount of the lubricating oil in the output channel, and the pressure regulating valve controls the airflow pressure in front of the supersonic nozzle, thereby controlling the air supply amount.

A flow and pressure adjustable oil-gas lubrication cooling device comprises a shell, an end cover, a guide rod, a piston, a pressure regulating valve, a flow regulating valve, a plug and a standard connecting piece;

one end of the shell is a blind cavity end, the other end of the shell is a flange end, and the end cover is fixedly connected with the flange end; the piston is sleeved on a guide rod positioned in the shell, and an oil cavity is formed by the piston, the shell and a cavity between the piston and the guide rod; the guide rod is of a mandrel structure with a flange plate at one end, an air passage is formed in the mandrel, the supersonic nozzle structure is arranged on the air passage, the pressure regulating valve is installed in the flange plate, the guide rod flange plate is installed and fixed between the shell and the end cover, and the other end of the guide rod is used as an output end and penetrates through the oil cavity and the blind cavity end of the shell; an annular oil cavity is formed between the guide rod and the blind cavity end, and an oil channel is arranged between the annular oil cavity and the downstream of the supersonic nozzle structure; a flow regulating valve and a plug are arranged at the blind cavity end of the shell; the end cover, the guide rod flange plate, and a cavity between the shell and the piston form an air cavity; the pressure regulating valve is used for inputting gas input from the end cover to the air passage according to preset pressure, the gas input into the air cavity drives the piston to extrude lubricating oil in the oil cavity, and the flow regulating valve controls the oil quantity entering the annular oil cavity.

Furthermore, the pressure regulating valve comprises a valve seat, a valve core, a regulating nut and a compression spring;

the external thread of the outer wall of the valve seat is used for being connected with the guide rod, the internal thread of the inner wall of the valve seat is used for installing an adjusting nut, the compression spring is sleeved on the valve core, two ends of the compression spring are respectively contacted with the adjusting nut and the valve core, the adjusting nut is screwed to enable the ball head of the valve core to abut against the conical surface of the valve seat to form sealing, and the pressure adjusting valve is opened when the air pressure applied to the front end of the ball head of the valve core is larger than the elastic force of the compression spring.

Furthermore, the compression amount of the compression spring is controlled by adjusting the position of the adjusting nut, and then the opening pressure of the pressure adjusting valve is controlled.

Furthermore, the flow regulating valve comprises a valve seat, a valve core, a compression spring, a sealing plug and a sealing gasket; the outer wall of the valve seat is provided with external threads, the center of the valve seat is provided with a through hole for installing a valve core, a cavity is arranged in one side of the valve seat, internal threads are arranged in the cavity and used for installing a sealing plug, and the through hole is communicated with the cavity; the valve seat is connected with the shell through the external thread, and lubricating oil is prevented from leaking outwards through the sealing plug and the sealing gasket; the compression spring is sleeved on the valve core, one end of the valve core penetrates through the through hole, two ends of the compression spring are respectively contacted with the end part of the valve seat and the ball head, after the flow regulating valve is installed on the shell, the ball head of the valve core props against the conical surface on the shell to form sealing, and when the pressure of oil pressure applied to the front end of the ball head of the valve core is larger than the elastic force of the compression spring, the flow regulating valve is opened.

Furthermore, the opening pressure of the flow regulating valve is controlled by controlling the compression amount of the compression spring, so that the regulation and control of the flow of the lubricating oil are realized.

Furthermore, the structure of the guide rod with the flange at one end is specifically formed by connecting two flanges with different inner and outer diameters in series, the flange with the relatively large diameter is positioned at the outermost side and used for realizing connection and sealing with the shell and the end cover through the end face of the flange, and the inner cavity of the flange is communicated with the air inlet; the flange plate on the inner side is provided with internal threads for realizing the connection with the pressure regulating valve, and a vent hole is formed between the bottom of the flange plate on the outermost side and the air cavity.

Furthermore, the vent holes are uniformly distributed relative to the bottom of the flange plate, and the total through-flow sectional area of the vent holes is larger than that of the pressure regulating valve.

Furthermore, the oil passages are symmetrically arranged relative to the air passage, and the total through-flow sectional area of the oil passages is larger than that of the flow regulating valve.

The device is suitable for gas supply pressure of 1-15 MPa and oil supply flow of 0-300 ml/min.

Compared with the prior art, the invention has the beneficial effects that:

the invention provides a solution based on the special condition that the existing general oil-gas lubrication equipment can not be used, namely, the requirement on volume and weight is strict, the structure is simple, and power supply is not needed, wherein an oil cavity piston is extruded by high-pressure gas, and the flow of the lubricating oil is controlled and conveyed by adjusting the pressure of a flow valve; the flow of the supply air is controlled by adjusting the pressure valve, the expanded low-temperature high-speed air flow is generated by the supersonic nozzle in the middle of the valve rod, the lubricating oil is driven to flow by the injection effect of the high-speed air flow to supply to relevant equipment for use, and meanwhile, the lubricating and cooling effects of the relevant equipment are solved.

Drawings

FIG. 1 is a vertical sectional view of an oil-gas lubrication cooling device with adjustable flow and pressure

FIG. 2 is a horizontal sectional view of an oil-gas lubrication cooling device with adjustable flow and pressure

FIG. 3 cross-sectional view of a pressure regulating valve

FIG. 4 a cross-sectional view of a flow control valve

FIG. 5 Right side view of the guide bar part

FIG. 6 is a sectional view of a guide part

Detailed Description

The invention is further illustrated by the following examples.

The main technical idea of the invention is that the device is characterized in that a high-pressure air source is introduced, the air source pushes an oil cavity piston to extrude lubricating oil to flow for supplying oil on one hand, on the other hand, the high-pressure air source generates low-temperature high-speed airflow through supersonic nozzle spraying and expanding, the high-speed airflow drives the lubricating oil to flow for generating lubricating oil gas, the low-temperature oil gas solves the lubricating and cooling effects of related devices at the same time, the lubricating oil supply quantity can be controlled by adjusting the pressure of a flow valve in the device, the airflow pressure in front of the nozzle can be controlled by adjusting a pressure valve, and the air supply quantity of the device is further controlled. The envelope size of the device is smaller than

An embodiment of the present invention is given, fig. 1 is a vertical sectional view of the present invention, fig. 2 is a horizontal sectional view of the present invention, fig. 3 is a sectional view of a pressure regulating valve of the present invention, fig. 4 is a sectional view of a flow regulating valve of the present invention, fig. 5 is a right side view of a guide part of the present invention, and fig. 6 is a sectional view of a guide part of the present invention.

In the invention, a pressure regulating valve 1 is arranged in the internal thread of the flange end of a guide rod 4 through the external thread of a valve seat, the flange end of the guide rod 4 is assembled between a shell 5 and an end cover 6, the other end of the guide rod passes through the blind cavity end of the shell 5, and the shell 5 is connected with the end cover 6 through a bolt. The piston 3 is mounted inside the housing 5 and is fitted over the guide rod 4 so as to be slidable along the guide rod 4. The flow regulating valve 2 is installed on the end face of the blind cavity end of the shell 5 through threads, and the plug 7 is installed on the side wall of the blind cavity end of the shell 5 through threads. A cavity 21 among the guide rod 4, the piston 3 and the shell 5 is a lubricating oil cavity, a cavity 20 among the guide rod 4, the piston 3, the shell 5 and the end cover 6 is a high-pressure air cavity, and an annular oil cavity 22 is formed inside a blind cavity end of the shell 5. The channel 23 in the end cap 6 is an air inlet of the invention and the channel 24 in the guide rod 4 is an air outlet of the invention.

The pressure regulating valve 1 is composed of a valve seat 8, a valve core 9, a regulating nut 10 and a compression spring 11. The external thread of the outer wall of the valve seat 8 is used for being connected with the guide rod 4, the internal thread of the inner wall is used for installing an adjusting nut 10, a compression spring 11 is sleeved on the valve core 9, two ends of the compression spring are respectively contacted with the adjusting nut 10 and the valve core 9, and the ball head of the valve core 9 can be pressed against the conical surface of the valve seat 8 to form sealing by screwing the adjusting nut 10. When the air pressure applied to the front end of the ball head of the valve core 9 is greater than the elastic force of the compression spring 11, the pressure regulating valve 1 is opened, the position of the regulating nut 10 is adjusted to control the compression amount of the compression spring 11, and further the opening pressure of the pressure regulating valve 1 is controlled, so that the cooling air pressure is regulated.

The flow regulating valve 2 is composed of a valve seat 12, a valve core 13, a compression spring 14, a sealing plug 15 and a sealing gasket 16. The outer wall of the valve seat 12 is provided with external threads for connecting with the shell 5, the inner wall of the valve seat is provided with internal threads for installing a sealing plug 15, and lubricating oil is prevented from leaking outwards through the sealing plug 15 and a sealing gasket 16. The compression spring 14 is sleeved on the valve core 13, two ends of the compression spring are respectively contacted with the valve seat 12 and the valve core 13, and after the flow regulating valve is installed on the shell 5, the ball head of the valve core 13 props against the conical surface on the shell 5 to form sealing. When the oil pressure applied to the front end of the ball head of the valve core 13 is larger than the elastic force of the compression spring 14, the flow regulating valve 2 is opened, the opening pressure of the flow regulating valve 2 can be controlled by controlling the compression amount of the compression spring 14, and then the regulation and control of the flow of the lubricating oil are realized.

One end of the guide rod 4 is of a flange structure, the middle part of the flange is a space for installing the pressure regulating valve 1, and a plurality of equal-size air vents 17 are uniformly distributed in the middle of the flange and used for communicating a high-pressure air inlet 23 with a high-pressure air cavity 20. An air passage is arranged in the shaft core of the guide rod 4, and a supersonic nozzle structure 18 is processed on the air passage, so that high-pressure air flow can expand and accelerate. And a plurality of oil passages 19 are symmetrically formed in the optical axis at the other end of the guide rod 4, and oil can enter an air passage in the guide rod 4 from the annular oil cavity 22 through the oil passages 19.

In practical use, lubricating oil is filled into the lubricating oil cavity 21 from the oil filling hole blocked by the plug 7 to ensure sufficient oil quantity, the air inlet 23 on the end cover 6 supplies air to the high-pressure air cavity 20, on one hand, the high-pressure air pushes the piston 3 to slide in the shell 5 and on the guide rod 4 to extrude the lubricating oil, and the pressurized lubricating oil enters the air passage in the middle of the guide rod through the flow regulating valve 2, the annular oil cavity 22 and the upper oil passage 19 of the guide rod; on the other hand, high-pressure gas is decompressed by the pressure regulating valve 1, enters the air passage in the middle of the guide rod, is expanded, cooled and accelerated by the supersonic nozzle 18 in the middle of the air passage, and then is used for injecting lubricating oil flowing out of the oil passage 19 to flow, and a high-pressure gas and lubricating oil mixture flows out of the air outlet 24 to provide cooling gas and lubricating oil for the outside. When the piston 3 moves to the limit position, the lubricating oil is used up, the lubricating oil can be injected into the oil cavity 21 again through the oil injection hole and can be used repeatedly after being sealed by the plug 7.

In the scheme of the invention, each pair of external sealing positions, the space between the air cavity and the oil cavity and the space between the air passage and the oil duct are sealed by a standard component sealing ring or a sealing gasket.

Although the present invention has been described with reference to the preferred embodiments, it is not intended to limit the present invention, and those skilled in the art can make variations and modifications of the present invention without departing from the spirit and scope of the present invention by using the methods and technical contents disclosed above.

The invention has not been described in detail in part of the common general knowledge of those skilled in the art.