CN105443586A - Cooling structure for thrust bearing lubricating oil of motor-driven auxiliary water-feeding pump - Google Patents
Cooling structure for thrust bearing lubricating oil of motor-driven auxiliary water-feeding pump Download PDFInfo
- Publication number
- CN105443586A CN105443586A CN201511012951.1A CN201511012951A CN105443586A CN 105443586 A CN105443586 A CN 105443586A CN 201511012951 A CN201511012951 A CN 201511012951A CN 105443586 A CN105443586 A CN 105443586A
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- Prior art keywords
- cooling
- bearing
- thrust
- lubricant oil
- lubricating oil
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
- F16C35/04—Rigid support of bearing units; Housings, e.g. caps, covers in the case of ball or roller bearings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/06—Lubrication
- F04D29/061—Lubrication especially adapted for liquid pumps
-
- 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
- F16N39/02—Arrangements for conditioning of lubricants in the lubricating system by cooling
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a cooling structure for thrust bearing lubricating oil of a motor-driven auxiliary water-feeding pump. The cooling structure comprises a bearing base, a cooling housing, a cooling room cover, a lubricating oil guide tube and a cooling coil tube, wherein the bearing base supports a thrust bearing; one end surface of the cooling housing is fixedly connected to the bearing base; the cooling room cover is fixedly connected to the other end surface of the cooling housing; the cooling room cover, the bearing base, the cooling housing and a bearing cover of the thrust bearing define a sealed cooling cavity; the lubricating oil guide tube is vertically mounted on the bearing base in a centered mode; a lubricating oil inlet and a lubricating oil outlet are formed in the lubricating oil guide tube; the lubricating oil with a relatively high temperature in the thrust bearing is guided out by virtue of the lubricating oil guide tube; the cooling coil tube is mounted on the bearing base, passes through the bearing base and then is connected with a cooling water pipeline outside the cooling cavity; and the cooling coil tube coils the lubricating oil guide tube. The cooling structure can realize quick starting of an electric auxiliary pump, and an additional water cooling system is not required.
Description
Technical field
The present invention relates to a kind of cooling structure of bearing oil, particularly a kind of cooling structure of electronic auxiliary feed water pump thrust-bearing lubricant oil.
Background technique
The cooling of bearing is most important for high-speed rotating machine, and the temperature of thrust-bearing is also the important performance assessment criteria of the auxiliary pump performance of nuclear power station electricity consumption.The auxiliary pump of current electricity is horizontal type multi-stage pump substantially, not only rotating speed is higher for the thrust-bearing of pump anti-drive end, and certain residual axial force will be born, especially under some special operation condition, pump can operate in low flow rate condition for a long time, under this operating mode, the end thrust of pump becomes large, and thrust bearing temperature is easily too high.Therefore, study thrust-bearing lubricant oil cooling structure of good performance, effectively control the temperature of thrust-bearing to the safe operation important in inhibiting of the auxiliary pump of electricity.In existing technology, the type of cooling that electric auxiliary thrust of pump bearing is conventional has air-cooled and water-cooling jacket cooling, and the structural type of cooling cavities is complicated, need additional fans or additional external refrigeration water system, and cooling effect is unobvious especially.
Summary of the invention
The object of this invention is to provide a kind of cooling structure of electronic auxiliary feed water pump thrust-bearing lubricant oil, the quick startup of electric auxiliary pump can be realized, also without the need to additional cooling water system.
In order to realize above object, the present invention is achieved by the following technical solutions:
A cooling structure for electronic auxiliary feed water pump thrust-bearing lubricant oil, comprises:
Bearing support, described bearing block support thrust-bearing;
Cooling housing, an end face of described cooling housing is fixedly connected with bearing support;
Cooling chamber cap, described cooling chamber cap is fixedly connected with another end face of cooling housing, and the bearing cap of this cooling chamber cap and bearing support, cooling housing and thrust-bearing forms an airtight cooling cavities;
Grease conduits, described grease conduits vertical center is arranged on bearing support, and described grease conduits is provided with lubricating oil inlet and lubricating oil outlet, and lubricant oil higher for the temperature in thrust-bearing is derived by this grease conduits;
Cooling coil, described cooling coil is arranged on bearing support and is also connected with the cooling water pipeline outside cooling cavities through bearing support, this cooling tube dish coiling grease conduits.
Described cooling housing is the cylindrical body of band inner chamber.
The outer wall of described cooling housing is provided with some floors of radially projection.
The material of described cooling housing is aluminum alloy.
Described cooling chamber cap is solid cylinder.
The material of described cooling chamber cap is aluminum alloy.
Described grease conduits is hollow cylinder, and the upper-end surface of described hollow cylinder is provided with lubricating oil inlet, and its lower end surface is closed but is provided with a lower end exit orifice at its axle center place, and its side is provided with the first exit orifice row and the second exit orifice row.
Under described lower end exit orifice, the first exit orifice row and the lubricant oil liquid level of the second exit orifice row all in cooling cavities.
Described cooling coil comprises:
Entrance pipe fitting, described entrance pipe fitting is connected with the cooling water pipeline outside cooling cavities, and cooling water enters cooling coil through entrance pipe fitting, and described cooling water comes from electronic auxiliary feed water pump itself;
Outlet pipe fitting, described outlet pipe fitting is connected with the cooling water pipeline outside cooling cavities, and cooling water flows out through outlet pipe fitting the intake chamber that cooling coil turns back to electronic auxiliary feed water pump;
Outer ring, described outer ring is communicated with entrance pipe fitting;
Inner ring, described inner ring is respectively with outer ring and export pipe fitting and be communicated with, and described inner ring is arranged on the internal layer of outer ring and coils grease conduits.
Described inner ring is communicated with outer ring and is bent by pipe, is welded.
The present invention compared with prior art, has the following advantages:
The quick startup of electric auxiliary pump can be realized, also without the need to additional cooling water system.
Accompanying drawing explanation
Fig. 1 is the sectional drawing of the cooling structure of the present invention's electronic auxiliary feed water pump thrust-bearing lubricant oil;
Fig. 2 is the form structure schematic diagram of cooling housing in Fig. 1;
Fig. 3 is the sectional drawing of grease conduits in Fig. 1;
Fig. 4 is the form structure schematic diagram of cooling coil in Fig. 1.
Embodiment
Below in conjunction with accompanying drawing, by describing a preferably specific embodiment in detail, the present invention is further elaborated.
A cooling structure for electronic auxiliary feed water pump thrust-bearing lubricant oil, as shown in Figure 1, comprises: bearing support 1, cooling housing 3, cooling chamber cap 4, grease conduits 5 and cooling coil 6.
As shown in Figure 1, bearing support 1 supported Thrust Bearing 2, in the present invention, electronic auxiliary feed water pump is horizontal type multi-stage pump (hereinafter referred to as the auxiliary pump of electricity), thrust-bearing 2 is arranged on the anti-drive end of the pump shaft 8 of electric auxiliary pump, when electricity auxiliary pump work, thrust-bearing 2 also needs to balance certain residual axial force, when the rotating speed of pump shaft 8 is higher or residual axial force is larger, easily temperature is too high for thrust-bearing 2, exceed the safe operating temperature of nuclear power station and report to the police, in the present embodiment, thrust-bearing 2 is double-row conical bearing, in bearing, outer ring overlaps with the pump shaft of pump shaft 8 respectively and bearing support 1 coordinates.
As depicted in figs. 1 and 2, an end face of cooling housing 3 is fixedly connected with bearing support 1 by bolt, in the present embodiment, cooling housing 3 is the cylindrical body of band inner chamber, its outer wall is provided with some the floors 301 of radially projection, except the part area of case top, floor 301 almost spreads all over the cylindrical circumference of whole cooling housing 3, this design adds the area of contact of cooling housing 3 and air, enhance radiating effect, in the present embodiment, the number of floor 301 is 12, and the material of cooling housing 3 is the aluminum alloy that heat dispersion is good.
As shown in Figure 1, cooling chamber cap 4 is bolted to connection with another end face of cooling housing 3, this cooling chamber cap 4 and the bearing cap 7 of bearing support 1, cooling housing 3 and thrust-bearing 2 and the Sealing of necessity form an airtight cooling cavities, ensure thrust-bearing lubricant oil at cavity Inner eycle without leakage.In the present embodiment, cooling chamber cap 4 is solid cylinder, and the aluminum alloy that its material selection heat dispersion is good, increase sealing and radiating effect further.
As shown in figures 1 and 3, in the present embodiment, grease conduits 5 is hollow cylinder, its vertical center is arranged on bearing support 1, its upper-end surface is provided with lubricating oil inlet, its lower end surface is closed but is provided with a lower end exit orifice 503 at its axle center place, its side is provided with the first exit orifice row 501 and the second exit orifice row 502, wherein, lower end exit orifice 503, under first exit orifice row 501 and the lubricant oil liquid level of the second exit orifice row 502 all in cooling cavities, lubricant oil higher for temperature in thrust-bearing 2 is derived by grease conduits 5, by lubricating oil outlet hole, lower end surface 503, high temperature oil in conduit and the low-temperature oil in oil sump fully mix by first row lubricating oil outlet hole 501 and secondary series lubricating oil outlet hole 502, formed on oil sump, the height of lower floor, the circulation of subzero oil.In the present embodiment, the hole count of the first exit orifice row 501 and the second exit orifice row 502 is set to 6 respectively.
As shown in Figure 1 and Figure 4, cooling coil 6 is arranged on bearing support 1 and is also connected with the cooling water pipeline outside cooling cavities through bearing support 1, and this cooling tube dish 6 coils grease conduits 5.In the present embodiment, cooling coil 6 comprises and is communicated with successively: entrance pipe fitting 601, outer ring 604, inner ring 603, outlet pipe fitting 602, entrance pipe fitting 601 is connected with the cooling water pipeline outside cooling cavities, cooling water enters outer ring 604 through entrance pipe fitting 601, cooling water comes from electric auxiliary pump itself, the inner housing that the first stage impeller of the auxiliary pump of electricity is corresponding is provided with one-level tap, cooling water enters outer ring 604 through entrance pipe fitting 601, outer ring 604 is communicated with entrance pipe fitting 601, inner ring 603 and outer ring 604 and export pipe fitting 602 and be connected, inner ring 603 is arranged on the internal layer of outer ring 604 and coils grease conduits 5, outlet pipe fitting 602 is connected with the cooling water pipeline outside cooling cavities, cooling water flows into from entrance pipe fitting 601 and enters inner ring 603 through outer ring 604, the intake chamber that cooling coil 6 turns back to electronic auxiliary feed water pump is flowed out again through outlet pipe fitting 602, in the present embodiment, inner ring 603 is communicated with outer ring 604 and is bent by pipe, is welded, material selection stainless steel.Because inner ring 603 coils grease conduits 5, therefore, through the double-deck cooling coil 6 of optimal design and the area of contact of bearing oil large, heat transfer effect is obvious, and without the need to additional cooling water supply system.
When deployed, treat that all open pump work and (open pump work and comprise appropriate lubricant oil of annotating in cooling cavities, in the present embodiment, the liquid level of lubricant oil is a little more than thrust-bearing outer ring, thrust-bearing roller can be immersed into) ready after, start electric auxiliary pump, pump shaft 8 drives thrust-bearing 2 to rotate.Because the pump efficiency of thrust-bearing 2 itself should, both sides by thrust-bearing 2 enter by lubricant oil, and " pump " from the centre of thrust-bearing 2 and enter into grease conduits 5, take the heat that thrust-bearing 2 sends out of simultaneously, the lubricant oil of higher temperature enters into oil sump by the first exit orifice row 501, second exit orifice row 502 and lower end exit orifice 503, and mixes with the lubricant oil of lower temperature in oil sump; While the auxiliary pump startup of electricity, be arranged on one-level tap on inner housing corresponding to electric auxiliary pump first stage impeller the working medium pumping pump is entered as the entrance pipe fitting 601 of cooling water by cooling coil 6, and successively after outer ring 604, inner ring 603, flowed out cooling cavities by outlet pipe fitting 602 and turned back to the intake chamber of electric auxiliary pump, take away the heat of lubricant oil in oil sump simultaneously, realize the cooling effect to lubricant oil.
In sum, the cooling structure of the present invention's electronic auxiliary feed water pump thrust-bearing lubricant oil, can realize the quick startup of electric auxiliary pump, also without the need to additional cooling water system.
Although content of the present invention has done detailed introduction by above preferred embodiment, will be appreciated that above-mentioned description should not be considered to limitation of the present invention.After those skilled in the art have read foregoing, for multiple amendment of the present invention and substitute will be all apparent.Therefore, protection scope of the present invention should be limited to the appended claims.
Claims (10)
1. a cooling structure for electronic auxiliary feed water pump thrust-bearing lubricant oil, is characterized in that, comprise:
Bearing support (1), described bearing support (1) supported Thrust Bearing (2);
Cooling housing (3), an end face of described cooling housing (3) is fixedly connected with bearing support (1);
Cooling chamber cap (4), described cooling chamber cap (4) is fixedly connected with another end face of cooling housing (3), and this cooling chamber cap (4) and the bearing cap (7) of bearing support (1), cooling housing (3) and thrust-bearing (2) form an airtight cooling cavities;
Grease conduits (5), described grease conduits (5) vertical center is arranged on bearing support (1), described grease conduits (5) is provided with lubricating oil inlet and lubricating oil outlet, and lubricant oil higher for the temperature in thrust-bearing (2) is derived by this grease conduits (5);
Cooling coil (6), described cooling coil (6) is arranged on bearing support (1) and goes up and pass bearing support (1) and be connected with the cooling water pipeline outside cooling cavities, this cooling tube dish (6) coiling grease conduits (5).
2. the cooling structure of electronic auxiliary feed water pump thrust-bearing lubricant oil as claimed in claim 1, is characterized in that, described cooling housing (3) is the cylindrical body of band inner chamber.
3. the cooling structure of electronic auxiliary feed water pump thrust-bearing lubricant oil as claimed in claim 1 or 2, is characterized in that, the outer wall of described cooling housing (3) is provided with some the floors (301) of radially projection.
4. the cooling structure of electronic auxiliary feed water pump thrust-bearing lubricant oil as claimed in claim 1 or 2, is characterized in that, the material of described cooling housing (3) is aluminum alloy.
5. the cooling structure of electronic auxiliary feed water pump thrust-bearing lubricant oil as claimed in claim 1, is characterized in that, described cooling chamber cap (4) is solid cylinder.
6. the cooling structure of the electronic auxiliary feed water pump thrust-bearing lubricant oil as described in claim 1 or 5, is characterized in that, the material of described cooling chamber cap (4) is aluminum alloy.
7. the cooling structure of electronic auxiliary feed water pump thrust-bearing lubricant oil as claimed in claim 1, it is characterized in that, described grease conduits (5) is hollow cylinder, the upper-end surface of described hollow cylinder is provided with lubricating oil inlet, its lower end surface is closed but is provided with a lower end exit orifice (503) at its axle center place, and its side is provided with the first exit orifice row (501) and the second exit orifice row (502).
8. the cooling structure of electronic auxiliary feed water pump thrust-bearing lubricant oil as claimed in claim 7, it is characterized in that, under described lower end exit orifice (503), the first exit orifice row (501) and the lubricant oil liquid level of the second exit orifice row (502) all in cooling cavities.
9. the cooling structure of electronic auxiliary feed water pump thrust-bearing lubricant oil as claimed in claim 7, is characterized in that, described cooling coil (6) comprises:
Entrance pipe fitting (601), described entrance pipe fitting (601) is connected with the cooling water pipeline outside cooling cavities, and cooling water enters cooling coil (6) through entrance pipe fitting (601), and described cooling water comes from electronic auxiliary feed water pump itself;
Outlet pipe fitting (602), described outlet pipe fitting (602) is connected with the cooling water pipeline outside cooling cavities, and cooling water flows out through outlet pipe fitting (602) intake chamber that cooling coil (6) turns back to electronic auxiliary feed water pump;
Outer ring (604), described outer ring (604) is communicated with entrance pipe fitting (601);
Inner ring (603), described inner ring (603) is respectively with outer ring (604) and export pipe fitting (602) and be communicated with, and described inner ring (603) is arranged on the internal layer of outer ring (604) and coils grease conduits (5).
10. the cooling structure of electronic auxiliary feed water pump thrust-bearing lubricant oil as claimed in claim 1, is characterized in that, described inner ring (603) is communicated with outer ring (604) and is bent by pipe, is welded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511012951.1A CN105443586B (en) | 2015-12-31 | 2015-12-31 | The cooling structure of electronic auxiliary feed water pump thrust bearing lubricating oil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511012951.1A CN105443586B (en) | 2015-12-31 | 2015-12-31 | The cooling structure of electronic auxiliary feed water pump thrust bearing lubricating oil |
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| Publication Number | Publication Date |
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| CN105443586A true CN105443586A (en) | 2016-03-30 |
| CN105443586B CN105443586B (en) | 2018-04-27 |
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| CN201511012951.1A Active CN105443586B (en) | 2015-12-31 | 2015-12-31 | The cooling structure of electronic auxiliary feed water pump thrust bearing lubricating oil |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108571525A (en) * | 2017-11-29 | 2018-09-25 | 湖南崇德工业科技有限公司 | Vertical type sliding bearing oil-water cooler |
| CN111425446A (en) * | 2020-05-15 | 2020-07-17 | 江苏优耐机械制造有限公司 | Bearing lubricating and cooling device for pitot tube pump |
| CN114382787A (en) * | 2021-12-03 | 2022-04-22 | 武汉船用电力推进装置研究所（中国船舶重工集团公司第七一二研究所） | Oil-water cooling bearing |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111425446A (en) * | 2020-05-15 | 2020-07-17 | 江苏优耐机械制造有限公司 | Bearing lubricating and cooling device for pitot tube pump |
| CN114382787A (en) * | 2021-12-03 | 2022-04-22 | 武汉船用电力推进装置研究所（中国船舶重工集团公司第七一二研究所） | Oil-water cooling bearing |
| CN114382787B (en) * | 2021-12-03 | 2024-05-03 | 武汉船用电力推进装置研究所（中国船舶重工集团公司第七一二研究所） | Oil-water cooled bearing |
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| Publication number | Publication date |
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| CN105443586B (en) | 2018-04-27 |
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