CN107940224B - Oil return degassing device and lubricating oil system - Google Patents
Oil return degassing device and lubricating oil system Download PDFInfo
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- CN107940224B CN107940224B CN201711320290.8A CN201711320290A CN107940224B CN 107940224 B CN107940224 B CN 107940224B CN 201711320290 A CN201711320290 A CN 201711320290A CN 107940224 B CN107940224 B CN 107940224B
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- oil return
- oil
- pipe
- sleeve
- assembly
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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
- F16N39/002—Arrangements for conditioning of lubricants in the lubricating system by deaeration
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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
- F16N19/00—Lubricant containers for use in lubricators or lubrication 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
- F16N39/06—Arrangements for conditioning of lubricants in the lubricating system by filtration
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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
- F16N2039/007—Using strainers
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Degasification And Air Bubble Elimination (AREA)
- Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
Abstract
The invention discloses an oil return degassing device and a lubricating oil system, wherein the oil return degassing device is arranged in an oil tank of the lubricating oil system, and relates to the technical field of power devices. The oil return degassing device comprises: the connecting piece is used for installing the oil return degassing device into an oil return hole in the inner wall of the oil tank; the inlet end of the oil return pipe assembly is connected with the connecting piece; the sleeve is arranged at the outlet end of the oil return pipe assembly, forms a continuous pipeline with the oil return pipe assembly, and is provided with a plurality of oil passing holes on the periphery; the filter component is detachably arranged on the circumferential outer side and the bottom of the sleeve, and the filter component is provided with a filter screen with the aperture smaller than 0.3 mm. The invention not only avoids the oil return rolling caused by the traditional gravity oil return mode and bubbles generated by the oil return rolling, but also effectively separates the bubbles with the diameter of more than 0.3mm in the oil return through the filter screen of the filter assembly, effectively reduces the air content in the lubricating oil, ensures the lubricating effect of the lubricating oil and reduces cavitation noise caused by the air content of the lubricating oil.
Description
Technical Field
The invention relates to the technical field of power devices, in particular to an oil return degassing device and a lubricating oil system.
Background
The lubricating oil system of the steam turbine and the speed reducer is communicated with the atmosphere, and oil return can bring the gas into an oil tank of the lubricating oil system, and a large number of bubbles with different diameters are formed in the lubricating oil through continuous coiling and stirring. The diameters of the bubbles are mainly distributed between 0.3 and 0.5mm, and the bubbles are difficult to float to the surface of the oil tank to gather and remove due to the small diameters of the bubbles, and the circulation rate of the oil tank is limited, so that the tiny bubbles are quickly dispersed to all corners of the oil tank and are more difficult to remove. In general, after long-term operation, the air content of the lubricating oil in the lubricating oil system of the steam turbine and the speed reducer is about 8-10%, and the bubbles seriously affect the normal operation of the lubricating oil system, so that the following adverse effects are caused: (1) The conveying capacity of the lubricating oil is reduced, so that the cooling and lubricating effects are greatly reduced. Therefore, the problems of instability of a bearing oil film, overhigh temperature of a bearing bush, damage of a tooth surface of a speed reducer and the like can be caused; (2) The bubbles are instantaneously broken along with the lubricating oil entering the high pressure area through the lubricating oil pump to generate cavitation noise, and the irregular noise spectrum has broadband characteristic, and the energy can excite the inherent vibration of the movable parts in the pump, the valve or the pipeline, so that the system vibration noise is abnormal. At present, the turbine and the speed reducer lubricating oil system have no effective degassing and defoaming measures.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide the oil return degassing device and the lubricating oil system, which not only avoid oil return rolling caused by the traditional gravity oil return mode and bubbles generated by the oil return rolling, but also effectively separate bubbles with the diameter of more than 0.3mm in oil return by a filter screen of a filter assembly, effectively reduce the air content in lubricating oil, ensure the lubricating effect of the lubricating oil and reduce cavitation noise caused by air content in the lubricating oil.
The invention provides an oil return degassing device, which is arranged in an oil tank of a lubricating oil system, and comprises:
the connecting piece is used for installing the oil return degassing device into an oil return hole in the inner wall of the oil tank;
the inlet end of the oil return pipe assembly is connected with the connecting piece;
the sleeve is arranged at the outlet end of the oil return pipe assembly, forms a continuous pipeline with the oil return pipe assembly, and is provided with a plurality of oil passing holes on the periphery;
the filter component is detachably arranged on the circumferential outer side and the bottom of the sleeve, and the filter component is provided with a filter screen with the aperture smaller than 0.3 mm.
On the basis of the technical scheme, the aperture of the filter screen is 0.1mm.
On the basis of the technical scheme, two ends of the sleeve are respectively provided with a fixed plate and a bottom plate, and the fixed plates and the bottom plates are connected through screws; the fixed plate is fixedly connected with the outlet end of the oil return pipe assembly, a first through hole is formed in the fixed plate, and the oil return pipe assembly and the sleeve are mutually communicated through the first through hole.
On the basis of the technical scheme, the oil return pipe assembly comprises a connecting pipe and a vent pipe, two ends of the connecting pipe are respectively connected with the connecting piece and the vent pipe, and the tail end of the vent pipe is the outlet end.
On the basis of the technical scheme, at least one partition plate is arranged on the inner wall of the connecting pipe, and the partition plate divides the inner cavity of the connecting pipe pipeline into mutually independent overflow spaces.
On the basis of the technical scheme, the top of the vent pipe is provided with a plurality of vent holes leading to the top space of the oil tank.
On the basis of the technical scheme, the sleeve is internally provided with the guide pipe, one end of the guide pipe is fixedly connected with the fixing plate, the other end of the guide pipe is a free end, a gap is reserved between the guide pipe and the inner wall of the sleeve, the pipe wall of the guide pipe is penetrated and provided with a plurality of oil outlet holes, and the sleeve is communicated with the oil return pipe assembly through the guide pipe.
On the basis of the technical scheme, the filter assembly comprises at least one filter screen assembly arranged on the circumferential outer side of the sleeve, the filter screen assembly is abutted between the fixed plate and the bottom plate, and the filter screen assembly comprises:
the two mounting plates are provided with central holes for penetrating through the sleeve;
an inner orifice plate disposed about an exterior of the central bore;
the outer pore plate is sleeved outside the inner pore plate;
the inner orifice plate and the outer orifice plate are abutted between the two mounting plates, and a folding filter screen is arranged between the outer orifice plate and the inner orifice plate.
On the basis of the technical scheme, the number of the filter screen assemblies is two, and the two filter screen assemblies are stacked up and down.
The invention also provides a lubricating oil system which comprises an oil tank, wherein the oil return degassing device is communicated with the oil return hole in the inner wall of the oil tank.
Compared with the prior art, the invention has the following advantages:
(1) The oil return pipe assembly and the sleeve smoothly guide the oil return of the lubricating oil system into the oil tank, and oil return rolling caused by a traditional gravity oil return mode and bubbles generated by the oil return rolling are avoided. In addition, the filter screen of the filter assembly can effectively separate bubbles with the diameter of more than 0.3mm in oil return, effectively reduce the air content in lubricating oil, ensure the lubricating effect of the lubricating oil and reduce cavitation noise caused by the air content of the lubricating oil.
(2) The guide pipe introduces the return oil below the liquid level of the oil tank, so that the return oil rolling caused by the traditional gravity return oil mode and bubbles generated by the return oil rolling are further avoided, and the amount of bubbles generated by the return oil entrained with air is reduced.
(3) The aperture of the folding filter screen is preferably 0.1mm, so that bubbles with the diameter of more than 0.3mm can be captured and removed, the multi-layer folding process is adopted, the flow area of the folding filter screen is ensured, the resistance of the flowing through the folding filter screen is ensured to be about 100mm water column, the flowing speed of lubricating oil passing through the folding filter screen is about 10mm/s, the oil return of a lubricating oil system is not influenced, and the smoothness of oil return is ensured.
Drawings
FIG. 1 is a schematic diagram of an oil return deaeration device according to an embodiment of the present invention;
FIG. 2 is a schematic illustration of the connection of the connector, return tube assembly, conduit and mounting plate of FIG. 1;
FIG. 3 is a view in the direction A of FIG. 1;
fig. 4 is a schematic structural view of a screen assembly.
In the figure:
1-connecting piece, 2-oil return pipe assembly, 21-connecting pipe, 211-baffle, 22-breather pipe, 221-vent hole, 222-outlet, 3-sleeve, 31-oil passing hole, 4-filter assembly, 41-filter screen assembly, 411-mounting plate, 412-center hole, 413-inner orifice plate, 414-folding filter screen, 415-outer orifice plate, 5-fixed plate, 6-conduit, 61-oil outlet, 7-bottom plate and 8-screw.
Detailed Description
The invention is described in further detail below with reference to the accompanying drawings and specific examples.
Referring to fig. 1, an embodiment of the present invention provides an oil return degassing device, which is disposed in an oil tank of a lubricating oil system, and includes a connecting member 1, an oil return pipe assembly 2, a sleeve 3, and a filter assembly 4. The connecting piece 1 is used for installing the oil return degassing device to an oil return hole of the inner wall of the oil tank, and the connecting piece 1 can be a flange plate which is matched with the oil return hole. The inlet end of the oil return pipe assembly 2 is connected with the connecting piece 1, the sleeve 3 is arranged at the outlet end of the oil return pipe assembly 2 and forms a continuous pipeline with the oil return pipe assembly 2, a plurality of oil passing holes 31 are formed in the periphery of the wall of the sleeve 3, the oil passing holes 31 are arranged at intervals along the length direction and the circumferential direction of the sleeve 3, and the oil passing holes 31 are kidney-shaped holes, so that lubricating oil return oil can uniformly flow to the filter assembly 4. The filter component 4 is detachably arranged on the circumferential outer side and the bottom of the sleeve 3, and the filter component 4 is provided with a filter screen with the aperture smaller than 0.3 mm. Preferably, the pore size of the filter screen is 0.1mm.
The two ends of the sleeve 3 are respectively provided with a fixed plate 5 and a bottom plate 7, and the fixed plate 5 and the bottom plate 7 are connected through a screw rod 8; the fixed plate 5 is fixedly connected with the outlet end of the oil return pipe assembly 2, a first through hole is formed in the fixed plate 5, and the oil return pipe assembly 2 and the sleeve 3 are mutually communicated through the first through hole.
The inside pipe 6 that is equipped with of sleeve 3, the one end and the fixed plate 5 fixed connection of pipe 6, the other end are the free end, leave the clearance between the inner wall of pipe 6 and sleeve 3, and the pipe wall of pipe 6 runs through and sets up a plurality of oil outlet holes 61, and sleeve 3 passes through pipe 6 and returns oil pipe subassembly 2 intercommunication. The conduit 6 introduces the return oil below the liquid level of the oil tank, so that the return oil rolling caused by the traditional gravity return oil mode and bubbles generated by the return oil rolling are further avoided, and the amount of bubbles generated by the return oil entrained with air is reduced.
Referring to fig. 2 and 3, the oil return pipe assembly 2 includes a connection pipe 21 and a ventilation pipe 22, both ends of the connection pipe 21 are respectively connected with the connection piece 1 and the ventilation pipe 22, and the ventilation pipe 22 is terminated with an outlet end.
Two clapboards 211 are arranged on the inner wall of the connecting pipe 21, the two clapboards 211 are arranged in parallel and are spaced at a certain distance, two ends of the clapboards 211 are welded and fixed with the inner wall of the connecting pipe 21, and the two clapboards 211 divide the inner cavity of the pipeline of the connecting pipe 21 into three mutually independent overcurrent spaces. The two baffles 211 in the adapter tube 21 are used for adjusting the flow of the oil return, so that the oil return smoothly and uniformly flows into the breather pipe 22. The breather pipe 22 is arranged behind the connecting pipe 21 to prevent unsmooth oil return, and the top of the breather pipe 22 is provided with a plurality of vent holes 221 leading to the top space of the oil tank, so that bubbles in the oil return can be gathered and dissipated to the top space of the oil tank.
When the oil return hole is positioned on the side wall of the oil tank, the connecting pipe 21 is a straight pipe, the connecting pipe 21 is communicated with the oil return hole through the connecting piece 1, the inlet of the vent pipe 22 is connected with the connecting pipe 21, and the outlet 222 of the vent pipe 22 is vertical to the inlet and faces the bottom direction of the oil tank. The top of the vent pipe 22 is provided with an opening which is covered by a cover plate, and a plurality of vent holes 221 which lead to the top space of the oil tank are formed in the cover plate.
Referring to fig. 1 and 2, the connection pipe 21 is connected with the ventilation pipe 22, the outlet 222 of the ventilation pipe 22 is connected with the fixing plate 5, and the guide pipe 6 is connected with the fixing plate 5 by welding. The connecting surface of the fixed plate 5 and the sleeve 3 is provided with a limit groove, the top of the sleeve 3 is clamped in the limit groove, and the bottom of the sleeve 3 is fixedly connected with the bottom plate 7. The bottom plate 7 is provided with a second through hole communicated with the inside of the sleeve 3, and the filter assembly 4 comprises a filter plate 42 arranged at the bottom of the sleeve 3, wherein the filter plate 42 is detachably arranged at the second through hole.
Referring to fig. 4, the filter assembly 4 includes two screen assemblies 41 disposed on the outer circumferential side of the sleeve 3, the two screen assemblies 41 being stacked one on top of the other. The filter screen assembly 41 is abutted between the fixed plate 5 and the bottom plate 7, and a buffer pad is arranged between the filter screen assembly 41 and the fixed plate 5 and the bottom plate 7.
Each screen assembly 41 comprises two mounting plates 411, an inner hole plate 413 and an outer hole plate 415, wherein the two mounting plates 411 are provided with a central hole 412 for penetrating the sleeve 3, the inner hole plate 413 is arranged around the outside of the central hole 412, the outer hole plate 415 is sleeved outside the inner hole plate 413, the inner hole plate 413 and the outer hole plate 415 are abutted between the two mounting plates 411, and a folding screen 414 is arranged between the outer hole plate 415 and the inner hole plate 413.
The aperture of the folding filter screen 414 is preferably 0.1mm, so that bubbles with the diameter of more than 0.3mm can be captured and removed, the flow area of the folding filter screen 414 is ensured by adopting a multi-layer folding process, the resistance of the flowing through the folding filter screen 414 is ensured to be about 100mm water column, the flowing speed of lubricating oil passing through the folding filter screen 414 is about 10mm/s, the oil return of a lubricating oil system is not influenced, and the smoothness of the oil return is ensured.
The oil return pipe assembly 2 and the sleeve 3 smoothly guide the oil return of the lubricating oil system into the oil tank, and oil return rolling caused by a traditional gravity oil return mode and bubbles generated by the oil return rolling are avoided. In addition, the filter screen of the filter assembly 4 can effectively separate bubbles with the diameter of more than 0.3mm in oil return, effectively reduce the air content in lubricating oil, ensure the lubricating effect of the lubricating oil and reduce cavitation noise caused by the air content of the lubricating oil. Through the design, the degassing rate of the oil return degassing device can reach more than 90%, and the filtering components are detachable, so that the oil return degassing device is convenient to install and maintain.
In other embodiments, the screen assembly 41 may be one, and two mounting plates 411 may abut the fixing plate 5 and the bottom plate 7, respectively.
The embodiment of the invention also provides a lubricating oil system, which comprises an oil tank, wherein an oil return hole in the inner wall of the oil tank is communicated with the oil return degassing device. When the oil return hole is positioned on the side wall of the oil tank, the oil return degassing device is arranged in the oil return hole through the connecting piece 1, the bottom of the sleeve 3 is arranged on the base at the bottom of the oil tank, the air content in lubricating oil is ensured to be effectively reduced, the lubricating effect of the lubricating oil is ensured, and cavitation noise caused by the air content of the lubricating oil is reduced.
The invention is not limited to the embodiments described above, but a number of modifications and adaptations can be made by a person skilled in the art without departing from the principle of the invention, which modifications and adaptations are also considered to be within the scope of the invention. What is not described in detail in this specification is prior art known to those skilled in the art.
Claims (6)
1. An oil return degasser, it locates in the oil tank of lubricating oil system, its characterized in that, oil return degasser includes:
the connecting piece (1) is used for installing the oil return degassing device to an oil return hole in the inner wall of the oil tank;
an oil return pipe assembly (2), the inlet end of which is connected with the connecting piece (1);
the sleeve (3) is arranged at the outlet end of the oil return pipe assembly (2) and forms a continuous pipeline with the oil return pipe assembly (2), and a plurality of oil passing holes (31) are formed in the periphery of the cylinder wall of the sleeve (3);
the filter assembly (4) is detachably arranged at the periphery outside and the bottom of the sleeve (3), and the filter assembly (4) is provided with a filter screen with the aperture smaller than 0.3 mm;
the two ends of the sleeve (3) are respectively provided with a fixed plate (5) and a bottom plate (7), and the fixed plate (5) and the bottom plate (7) are connected through a screw rod (8); the oil return pipe assembly comprises a fixed plate (5) and an oil return pipe assembly (2), wherein the fixed plate (5) is fixedly connected with the outlet end of the oil return pipe assembly (2), a first through hole is formed in the fixed plate (5), and the oil return pipe assembly (2) and a sleeve (3) are mutually communicated through the first through hole;
the oil return pipe assembly (2) comprises a connecting pipe (21) and a vent pipe (22), two ends of the connecting pipe (21) are respectively connected with the connecting piece (1) and the vent pipe (22), and the tail end of the vent pipe (22) is the outlet end;
at least one partition board (211) is arranged on the inner wall of the connecting pipe (21), and the partition board (211) divides the inner cavity of the pipeline of the connecting pipe (21) into mutually independent overflow spaces;
the oil return device is characterized in that a guide pipe (6) is arranged inside the sleeve (3), one end of the guide pipe (6) is fixedly connected with the fixing plate (5), the other end of the guide pipe is a free end, a gap is reserved between the guide pipe (6) and the inner wall of the sleeve (3), a plurality of oil outlet holes (61) are formed in the pipe wall of the guide pipe (6) in a penetrating mode, the sleeve (3) is communicated with the oil return pipe assembly (2) through the guide pipe (6), and the guide pipe (6) introduces oil return to the position below the liquid level of the oil tank.
2. The oil return deaeration apparatus as claimed in claim 1, wherein: the pore diameter of the filter screen is 0.1mm.
3. The oil return deaeration apparatus as claimed in claim 1, wherein: the top of the vent pipe (22) is provided with a plurality of vent holes (221) which lead to the top space of the oil tank.
4. The oil return deaeration apparatus as claimed in claim 1, wherein: the filter assembly (4) comprises at least one filter screen assembly (41) arranged on the circumferential outer side of the sleeve (3), the filter screen assembly (41) is abutted between the fixed plate (5) and the bottom plate (7), and the filter screen assembly (41) comprises:
the two mounting plates (411), the two mounting plates (411) are provided with a central hole (412) for penetrating the sleeve (3);
an inner orifice plate (413) disposed about an exterior of the central bore (412);
an outer orifice plate (415) which is sleeved outside the inner orifice plate (413);
wherein the inner hole plate (413) and the outer hole plate (415) are abutted between the two mounting plates (411), and a folding filter screen (414) is arranged between the outer hole plate (415) and the inner hole plate (413).
5. The oil return deaeration apparatus of claim 4, wherein: the number of the filter screen assemblies (41) is two, and the two filter screen assemblies (41) are stacked up and down.
6. A lubrication system, the lubrication system comprising an oil tank, characterized in that: the oil return hole of the inner wall of the oil tank is communicated with the oil return degassing device according to any one of claims 1-5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711320290.8A CN107940224B (en) | 2017-12-12 | 2017-12-12 | Oil return degassing device and lubricating oil system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711320290.8A CN107940224B (en) | 2017-12-12 | 2017-12-12 | Oil return degassing device and lubricating oil system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107940224A CN107940224A (en) | 2018-04-20 |
| CN107940224B true CN107940224B (en) | 2023-06-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711320290.8A Active CN107940224B (en) | 2017-12-12 | 2017-12-12 | Oil return degassing device and lubricating oil system |
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| Country | Link |
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| CN (1) | CN107940224B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000024407A (en) * | 1998-07-14 | 2000-01-25 | Mitsubishi Heavy Ind Ltd | Return oil defoaming device |
| CN204716951U (en) * | 2015-05-18 | 2015-10-21 | 常州常宝精特能源管材有限公司 | A kind of have rising of froth breaking filtering function and subtract machine gear oil recycling plant |
| CN207702106U (en) * | 2017-12-12 | 2018-08-07 | 中国船舶重工集团公司第七一九研究所 | A kind of oil return depassing unit and lubricating oil system |
-
2017
- 2017-12-12 CN CN201711320290.8A patent/CN107940224B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000024407A (en) * | 1998-07-14 | 2000-01-25 | Mitsubishi Heavy Ind Ltd | Return oil defoaming device |
| CN204716951U (en) * | 2015-05-18 | 2015-10-21 | 常州常宝精特能源管材有限公司 | A kind of have rising of froth breaking filtering function and subtract machine gear oil recycling plant |
| CN207702106U (en) * | 2017-12-12 | 2018-08-07 | 中国船舶重工集团公司第七一九研究所 | A kind of oil return depassing unit and lubricating oil system |
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| Publication number | Publication date |
|---|---|
| CN107940224A (en) | 2018-04-20 |
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