CN109506115B - Compact oil mist generating device - Google Patents
Compact oil mist generating device Download PDFInfo
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- CN109506115B CN109506115B CN201811394922.XA CN201811394922A CN109506115B CN 109506115 B CN109506115 B CN 109506115B CN 201811394922 A CN201811394922 A CN 201811394922A CN 109506115 B CN109506115 B CN 109506115B
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- oil
- nozzle
- pressure
- section
- atomizing nozzle
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16N—LUBRICATING
- F16N7/00—Arrangements for supplying oil or unspecified lubricant from a stationary reservoir or the equivalent in or on the machine or member to be lubricated
- F16N7/30—Arrangements for supplying oil or unspecified lubricant from a stationary reservoir or the equivalent in or on the machine or member to be lubricated the oil being fed or carried along by another fluid
- F16N7/32—Mist lubrication
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16N—LUBRICATING
- F16N21/00—Conduits; Junctions; Fittings for lubrication apertures
- F16N21/02—Lubricating nipples
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16N—LUBRICATING
- F16N29/00—Special means in lubricating arrangements or systems providing for the indication or detection of undesired conditions; Use of devices responsive to conditions in lubricating arrangements or systems
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16N—LUBRICATING
- F16N39/00—Arrangements for conditioning of lubricants in the lubricating system
- F16N39/04—Arrangements for conditioning of lubricants in the lubricating system by heating
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16N—LUBRICATING
- F16N7/00—Arrangements for supplying oil or unspecified lubricant from a stationary reservoir or the equivalent in or on the machine or member to be lubricated
- F16N7/30—Arrangements for supplying oil or unspecified lubricant from a stationary reservoir or the equivalent in or on the machine or member to be lubricated the oil being fed or carried along by another fluid
- F16N7/32—Mist lubrication
- F16N7/34—Atomising devices for oil
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Nozzles (AREA)
Abstract
The invention discloses a compact oil mist generating device which comprises a drainage nozzle, a voltage divider, an oil cup assembly, an atomizer assembly, an external nozzle and a connecting pipeline assembly, wherein the connecting pipeline assembly comprises a first connecting pipeline and a second connecting pipeline; the flow guide nozzle is connected with an external air source and used for allowing air media to enter the voltage divider; the voltage divider has two interfaces: the interface A is directly connected with the oil cup assembly, and the oil cup assembly is connected with the atomizer assembly through a second connecting pipeline; the interface B is connected to the atomizer assembly through a first connecting pipeline; furthermore, the atomizer assembly is connected with the external nozzle. The oil mist generating device has a simple and compact integral structure, and can meet the severe requirement on the weight volume under a specific application occasion.
Description
Technical Field
The invention relates to a compact oil mist generating device, which is particularly suitable for bearings in gas-driven rotating machinery with strict requirements on weight and volume in the field of spaceflight.
Background
Oil mist lubrication and cooling is an important way of lubrication and cooling of bearings. The oil mist is conveyed to a part needing to be lubricated through a pipeline, oil films with excellent lubricating effect can be formed on the surfaces of the friction pair parts by oil mist particles which are at the minimum in a micron order, so that the friction force is reduced, and meanwhile, heat generated in the friction pair can be effectively taken away by the continuously supplied oil mist, so that the dual effects of lubrication and cooling are achieved. The oil mist lubrication and cooling is suitable for bearing lubrication and cooling of various high-speed rotating machines, and is widely applied to the machine industry.
The oil mist generating device is the core technology for realizing oil mist lubrication. In industrial applications, a dedicated device, generally called an oil mist generator, is generally provided to generate the required oil mist, which is then conveyed to the various lubrication points via pipes. The principle of a common oil mist generator is that compressed air or compressed nitrogen and other common compressed gas media are introduced into an atomizing chamber, meanwhile, lubricating oil in an oil tank of the oil mist generator is fed into the atomizing chamber through a pump or sucked, and high-speed air flow and the lubricating oil are mixed in the atomizing chamber through condensation atomization or other atomization processes to generate oil mist.
The industrial oil mist generator integrates all functional components into universal standardized equipment, has more connecting pipelines and larger weight and volume of the equipment, and is difficult to meet the requirements of the industrial oil mist generator on occasions with severe requirements on structural space or weight, such as gas-driven rotating machinery in the aerospace field.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects in the prior art, the invention provides a compact oil mist generating device which is simple and compact in overall structure and can meet the severe requirements on the weight and the volume in specific application occasions.
(II) technical scheme
A compact oil mist generating device comprises a drainage nozzle, a voltage divider, an oil cup assembly, an atomizer assembly, an external nozzle and a connecting pipeline assembly, wherein the connecting pipeline assembly comprises a first connecting pipeline and a second connecting pipeline; the flow guide nozzle is connected with an external air source and used for allowing air media to enter the voltage divider; the voltage divider has two interfaces: the interface A is directly connected with the oil cup assembly, and the oil cup assembly is connected with the atomizer assembly through a second connecting pipeline; the interface B is connected to the atomizer assembly through a first connecting pipeline; furthermore, the atomizer assembly is connected with the external nozzle.
When the air flow passes through the voltage divider, the air flow below the voltage dividing partition board is stagnated at the interface A, and the air flow above the voltage dividing partition board enters the interface B.
The piston is acted by the air flow pressure stagnant at the interface A to form a trend of pushing oil in the oil cavity shell to move.
And a sealing ring is arranged between the piston and the oil cavity shell, and the sealing ring is a single channel, a double channel or a plurality of channels.
The atomizer assembly comprises an atomizing nozzle, an oil inlet joint and a nozzle thin tube; the atomizing nozzle has an inducer, an outlet section, and a throat section between the inducer and the outlet section.
Wherein, the inner diameter of the inlet section of the atomizing nozzle is gradually reduced along the airflow direction and is in a contraction shape; the inner diameter of the outlet section is gradually increased along the airflow direction and is in an expanded shape; the throat section is cylindrical.
An oil inlet hole is obliquely or vertically formed in the throat section of the atomizing nozzle, an oil injection thin tube is assembled in the oil inlet hole, and an oil outlet in the oil cup assembly is connected with an oil inlet joint of the atomizer assembly through a second connecting pipeline; the oil liquid flows through the nozzle thin tube and then enters the throat part of the atomizing nozzle.
The air flow sequentially flows through the voltage divider, the interface B, the first connecting pipeline and the atomizing nozzle through the drainage nozzle, when the air flow flows through the throat section of the atomizing nozzle, the pressure is reduced, so that the air flow stagnant at the interface A pushes the piston, the oil liquid sequentially flows through the oil outlet, the second connecting pipeline, the oil inlet joint and the nozzle thin tube, and enters the throat section of the atomizing nozzle to be fully mixed with the air flow, and the required oil mist is formed; the pressure of the oil mist rises back in the outlet section of the atomizing nozzle, and the oil mist is connected with an external pipeline through an external nozzle and conveyed to a working point.
The initial pressure of the airflow in the drainage nozzle is P0, the pressure of the stagnation airflow in the interface A is P1, the airflow has the lowest pressure value P2 when reaching the throat section of the atomizing nozzle, and P1> P0> P2; the pressure of the oil mist in the cylindrical section of the outlet section of the atomizing nozzle approaches the initial pressure P0.
(III) advantageous effects
The compact oil mist generating device is simple and reliable in structure and small in size, can be directly integrated outside an application object product as a functional accessory, and saves the installation space to the maximum extent; the piston type oil cup can be replaced by an oil sac and can work in a gravity-free environment; the nozzle thin tubes can be composed of a plurality of thin tubes, and the oil-gas proportion can be changed by adjusting the diameter and the number of the nozzle thin tubes under the condition of certain fluid pressure; if necessary, a heater and a heat-insulating layer can be added to heat and insulate the oil; for the piston type oil cup, a position sensor can be arranged to monitor the oil quantity.
Drawings
Fig. 1 is a sectional view of a compact oil mist generating device of the present invention.
Fig. 2 is an operational schematic diagram of a compact oil mist generating device of the present invention.
In the figure, 1-drainage nozzle, 2-voltage divider, 2-1-A interface, 2-2-B interface, 3-oil cup component, 3-1 oil cavity shell, 3-2-piston, 3-3-sealing ring, 3-4-oil outlet, 4-atomizer component, 4-1-atomizing nozzle, 4-2-oil inlet joint, 4-3-nozzle thin tube and 5-external connection nozzle.
Detailed Description
Referring to fig. 1, the compact oil mist generating device of the invention comprises a flow guiding nozzle 1, a pressure divider 2, an oil cup assembly 3, an atomizer assembly 4, an external nozzle 5 and a connecting pipeline assembly 6, wherein the connecting pipeline assembly 6 comprises a first connecting pipeline 6-1 and a second connecting pipeline 6-2; wherein, the drainage nozzle 1 is connected with an external air source, and a gas medium enters the voltage divider 2; the voltage divider 2 has two interfaces: the connector A2-1 and the connector B2-2, the connector A2-1 is directly connected with the oil cup component 3, and the oil cup component 3 is connected with the atomizer component 4 through a second connecting pipeline 6-2; the interface B2-2 is connected to the atomizer assembly 4 through a first connecting pipeline 6-2; further, the atomizer assembly 4 is connected to the external nozzle 5.
A partial pressure partition plate is arranged between an interface A2-1 and an interface B2-2 in the pressure divider 2, when air flow passes through the pressure divider 2, the air flow below the partial pressure partition plate is stagnant at the interface A2-1, and the air flow above the partial pressure partition plate enters the interface B2-2.
The oil cup assembly 3 comprises an oil cavity shell 3-1, a piston 3-2, a sealing ring 3-3 and an oil outlet 3-4, wherein the piston 3-2 is acted by the air flow pressure stagnant at an A interface 2-1 to form a trend of pushing oil in the oil cavity shell 3-1 to move; a sealing ring 3 is arranged between the piston 3-2 and the oil cavity shell 3-1, and the sealing ring 3 is double-layer.
The atomizer assembly 4 comprises an atomizing nozzle 4-1, an oil inlet joint 4-2 and a nozzle thin tube 4-3; the atomizing nozzle 4-1 has an inlet section, an outlet section, and a throat section located between the inlet section and the outlet section.
The inner diameter of the inlet section of the atomizing nozzle 4-1 is gradually reduced along the airflow direction and is in a contraction shape; the inner diameter of the outlet section is gradually increased along the airflow direction and is in an expanded shape; the throat section is cylindrical
An oil inlet hole is obliquely or vertically formed in the throat section of the atomizing nozzle 4-1, an oil injection thin tube 4-3 is assembled in the oil inlet hole, and an oil outlet 3-4 in the oil cup assembly 3 is connected with an oil inlet joint 4-2 of the atomizer assembly 4 through a second connecting pipeline 6-2; the oil liquid flows through the nozzle thin tube 4-3 and then enters the throat section of the atomizing nozzle 4-1.
The airflow sequentially flows through the pressure divider 2, the interface B2-2, the first connecting pipeline 6-1 and the atomizing nozzle 4-1 through the flow guide nozzle 1, when the airflow flows through the throat section of the atomizing nozzle 4-1, the pressure is reduced, so that the airflow stagnant at the interface A2-1 pushes the piston 3-2, oil liquid sequentially flows through the oil outlet 3-4, the second connecting pipeline 6-2, the oil inlet connector 4-2 and the nozzle tubule 4-3, enters the throat section of the atomizing nozzle 4-1 and is fully mixed with the airflow, and required oil mist is formed; the pressure of the oil mist rises back in the outlet section of the atomizing nozzle 4-1, and the oil mist is connected with an external pipeline through an external nozzle 5 and conveyed to a working point
Referring to fig. 2, the compact oil mist generating device of the present invention operates as follows:
according to the fluid flowing direction, the compact oil mist generating device provided by the invention sequentially comprises a diversion area I, a partial pressure area II, an atomization area III and an outflow area IV.
When the compact oil mist generating device works, an external gas medium is guided through the flow guide nozzle 1, the initial pressure is recorded as P0, and the initial pressure P0 is generally 0.1-0.5 MPa; when the gas passes through the pressure divider 2, the gas flow below the pressure dividing partition is stagnant, the stagnation pressure is marked as P1, P1> P0, and the stagnation pressure acts on the piston 3-2; when the airflow flows to the conical section of the inlet section of the atomizing nozzle 4-1, the airflow expands, reduces the pressure and accelerates, and when the pressure reaches the lowest value of the throat section of the atomizing nozzle 4-1, the pressure is marked as P2, and P2 is less than P0; because the outlet of the nozzle thin tube 4-3 is positioned at the throat section of the atomizing nozzle 4-1, the oil liquid in the oil cup component 3 enters the throat section of the atomizing nozzle 4-1 through the nozzle thin tube 4-3 under the pressure difference action of P1 and P2 and is fully mixed with the high-speed airflow to form oil mist; the oil mist is diffused by the conical section of the outlet section of the atomizing nozzle 4-1, the pressure is restored to be close to the initial pressure P0, and finally the oil mist is output through the external nozzle 5.
Claims (1)
1. A compact oil mist generating device is suitable for bearings in gas-driven rotating machinery with strict requirements on weight and volume in the aerospace field, and is characterized by comprising a flow guiding nozzle, a voltage divider, an oil cup assembly, an atomizer assembly, an external nozzle and a connecting pipeline assembly, wherein the connecting pipeline assembly comprises a first connecting pipeline and a second connecting pipeline; the flow guide nozzle is connected with an external air source and used for allowing air media to enter the voltage divider; the voltage divider has two interfaces: the interface A is directly connected with the oil cup assembly, and the oil cup assembly is connected with the atomizer assembly through a second connecting pipeline; the interface B is connected to the atomizer assembly through a first connecting pipeline; furthermore, the atomizer assembly is connected with the external nozzle;
a partial pressure partition plate is arranged between the interface A and the interface B in the voltage divider, when air flow passes through the voltage divider, the air flow below the partial pressure partition plate is stagnated at the interface A, and the air flow above the partial pressure partition plate enters the interface B;
the oil cup assembly comprises an oil cavity shell, a piston, a sealing ring and an oil outlet, wherein the piston is acted by the pressure of air flow stagnated at an interface A to form a trend of pushing oil in the oil cavity shell to move;
the atomizer assembly comprises an atomizing nozzle, an oil inlet joint and a nozzle thin tube; the atomizing nozzle has an inlet section, an outlet section, and a throat section located between the inlet section and the outlet section;
the inner diameter of the inlet section of the atomizing nozzle is gradually reduced along the airflow direction and is in a contraction shape; the inner diameter of the outlet section is gradually increased along the airflow direction and is in an expanded shape; the throat section is cylindrical;
an oil inlet hole is obliquely formed in the throat section of the atomizing nozzle, an oil injection thin tube is assembled in the oil inlet hole, and an oil outlet in the oil cup assembly is connected with an oil inlet joint of the atomizer assembly through a second connecting pipeline; the oil liquid flows through the nozzle thin tube and then enters the throat part of the atomizing nozzle;
the air flow sequentially flows through the voltage divider, the interface B, the first connecting pipeline and the atomizing nozzle through the drainage nozzle, when the air flow flows through the throat section of the atomizing nozzle, the pressure is reduced, so that the air flow stagnant at the interface A pushes the piston, the oil liquid sequentially flows through the oil outlet, the second connecting pipeline, the oil inlet joint and the nozzle thin tube, and enters the throat section of the atomizing nozzle to be fully mixed with the air flow, and the required oil mist is formed; the pressure of the oil mist rises back in the outlet section of the atomizing nozzle, and the oil mist is connected with an external pipeline through an external nozzle and conveyed to a working point;
the initial pressure of the air flow in the drainage nozzle is P0;
the pressure of stagnant air flow in the interface A is P1, and the air flow has the lowest pressure value P2 when reaching the throat section of the atomizing nozzle, wherein P1> P0> P2; the pressure of the oil mist in the cylindrical section of the outlet section of the atomizing nozzle approaches the initial pressure P0;
when the compact oil mist generating device works, an external gas medium is guided through the flow guide nozzle, the initial pressure is recorded as P0, and the initial pressure P0 is 0.1-0.5 MPa; when the gas passes through the pressure divider, the gas flow below the pressure dividing partition is stagnant, the stagnation pressure is marked as P1, P1> P0, and the stagnation pressure acts on the piston; when the airflow flows to the conical section of the inlet section of the atomizing nozzle, the airflow expands, reduces the pressure and accelerates, and when the airflow reaches the throat section of the atomizing nozzle, the pressure reaches the lowest value which is marked as P2, and P2 is less than P0; because the outlet of the nozzle thin tube is positioned at the throat section of the atomizing nozzle, oil liquid in the oil cup assembly enters the throat section of the atomizing nozzle through the nozzle thin tube under the action of pressure difference of P1 and P2 and is fully mixed with high-speed airflow to form oil mist; the oil mist is diffused by the conical section of the outlet section of the atomizing nozzle, the pressure is restored to be close to the initial pressure P0, and finally the oil mist is output through the external nozzle;
and a sealing ring is arranged between the piston and the oil cavity shell, and the sealing ring is a single channel, a double channel or a plurality of channels.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811394922.XA CN109506115B (en) | 2018-11-22 | 2018-11-22 | Compact oil mist generating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811394922.XA CN109506115B (en) | 2018-11-22 | 2018-11-22 | Compact oil mist generating device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109506115A CN109506115A (en) | 2019-03-22 |
| CN109506115B true CN109506115B (en) | 2021-03-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811394922.XA Active CN109506115B (en) | 2018-11-22 | 2018-11-22 | Compact oil mist generating device |
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| CN (1) | CN109506115B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113606480B (en) * | 2021-06-30 | 2022-12-27 | 北京精密机电控制设备研究所 | Flow and pressure adjustable oil-gas lubrication cooling method and device |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB358072A (en) * | 1930-01-09 | 1931-09-28 | William John Walker | Improvements in or relating to air line lubricators |
| CN2412142Y (en) * | 1999-05-21 | 2000-12-27 | 上海石油化工股份有限公司 | Oil mist generating and jetting device |
| DE102008032743A1 (en) * | 2008-07-11 | 2010-01-14 | Schaeffler Kg | Dosing device for e.g. oil, for lubricating antifriction bearing, has piston reversibly adjustable from starting position into conveying position, so that cross section of piston is reduced under deformation of deformable section |
| CN201246593Y (en) * | 2008-09-05 | 2009-05-27 | 中国航空动力机械研究所 | Oil fog generating apparatus |
| CN206617750U (en) * | 2017-02-17 | 2017-11-07 | 武汉武钢北湖机械制造有限公司 | A kind of lubricating arrangement |
| CN207080795U (en) * | 2017-04-10 | 2018-03-09 | 东莞安默琳机械制造技术有限公司 | Micro lubricating mist of oil supply system for machining |
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2018
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