CN204828068U - Circulating water pump guide bearing lubrication and cooling system - Google Patents
Circulating water pump guide bearing lubrication and cooling system Download PDFInfo
- Publication number
- CN204828068U CN204828068U CN201520545942.8U CN201520545942U CN204828068U CN 204828068 U CN204828068 U CN 204828068U CN 201520545942 U CN201520545942 U CN 201520545942U CN 204828068 U CN204828068 U CN 204828068U
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- CN
- China
- Prior art keywords
- circulating water
- water pump
- guide bearing
- cooling system
- cooling
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Abstract
The utility model discloses a circulating water pump guide bearing lubrication and cooling system, including circulating water pump and cooling water device, the packing box at circulating water pump top body department offer that the intercommunication is taken over to it in and the pump shaft between the oblique through -hole of annular space, the cooling water device includes the condenser tube way and sets up the booster pump on the road in this condenser tube, the booster pump both sides are equipped with entry butterfly valve and outlet butterfly valve respectively, be equipped with the check valve between booster pump and the outlet butterfly valve, condenser tube way entry end with the female union coupling of circulating water pump's export, its exit end with the through -hole is connected to one side. The utility model discloses guarantee the supply of guide bearing cooling water effectively, avoided the guide bearing match dragon body to take place wearing and tearing, prolonged circulating water pump's life -span on probation.
Description
Technical field
The utility model relates to a kind of cooling system, especially relates to a kind of vertical one step single sucking guide-vane, circulating water pump guide bearing lubricating and cooling system that endosome withdrawable oblique flow circulating water pump guide bearing carries out effective cooling.
Background technique
Guide bearing is the critical component of large pump, plays a part to bear water pump rotatable parts radial force, stablize wheel rotation.If guide bearing wearing and tearing are excessive or damage, then unit axis throw can be caused to increase, vibration aggravation, severe patient generation blade touches shell accident.According to investigations, in water pump operation fault, the overwhelming majority is guide bearing fault.Therefore, guide bearing is water pump reliability, service life and the major control factors of planned overhaul life.
In existing power-plant operation process, conventional vertical single stage single suction guide-vane, endosome withdrawable oblique flow circulating water pump are topmost equipment in Thermal Power Station's circulation, and its safety and stability run is related to the Security of whole unit.Raw water pump guide bearing adopts from the type of cooling, on inner connecting tube, be namely equipped with some circular holes of a certain diameter, and the circulating water followed in pump after impeller acting is entered in inner connecting tube by circular hole and cools guide bearing and lubricate.In circulating water pump initial start stage, be positioned at state that pump shaft guide bearing topmost is often in chilled(cooling) water supply (CWS) deficiency when running, guide bearing is matched imperial body and comparatively serious wearing and tearing is often occurred or even melts phenomenon, matching gap severe overweight between guide bearing and axle, cause and follow water-change pump pump housing vibration increase, have a strong impact on equipment and unit safety operation.
Model utility content
The technical problem that the utility model solves is to provide a kind of circulating water pump guide bearing lubricating and cooling system, effectively reduces the wearing and tearing that imperial body matched by guide bearing.
Technical solution of the present utility model is:
A kind of circulating water pump guide bearing lubricating and cooling system, wherein, comprises circulating water pump and chilled water unit; The stuffing box body place at described circulating water pump top offers the oblique through hole of the annular space be communicated between its inner connecting tube and pump shaft; Described chilled water unit comprises cooling water pipeline and is arranged at the suction booster on this cooling water pipeline, and described suction booster both sides are respectively equipped with entrance butterfly valve and exit butterfly valve, are provided with check valve between described suction booster and exit butterfly valve; Described cooling water pipeline entry end is connected with the female pipe of described circulating water delivery side of pump, and its outlet end is connected with described oblique through hole.
Circulating water pump guide bearing lubricating and cooling system as above, wherein, is provided with filter between described entrance butterfly valve and suction booster.
Circulating water pump guide bearing lubricating and cooling system as above, wherein, described circulating water pump stuffing box body is provided with multiple oblique through hole, and described oblique through hole is 120 ° of settings around interval, axle center.
Circulating water pump guide bearing lubricating and cooling system as above, wherein, imperial body matched by the guide bearing of described circulating water pump lower end is L-type.
Circulating water pump guide bearing lubricating and cooling system as above, wherein, described chilled water unit comprises cooling water pipeline described in two groups, and described in two groups, cooling water pipeline connects setting side by side.
Circulating water pump guide bearing lubricating and cooling system as above, wherein, described chilled water unit also comprises the all-pass bypass be connected side by side with described cooling water pipeline, and described all-pass bypass is provided with bypass electric valve.
Circulating water pump guide bearing lubricating and cooling system as above, wherein, it comprises three described circulating water pump connected side by side.
Circulating water pump guide bearing lubricating and cooling system as above, wherein, described suction booster lift is 30m, and described suction booster flow is for being more than or equal to 24m
3/ h.
By learning above, the utility model compared with prior art, can reach following effect really:
Circulating water pump guide bearing lubricating and cooling system of the present utility model, by increasing the circulation loop of cooling water to circulating water pump, make circulating water pump when initial start stage and seawater just meet low water mark, effectively ensure that the supply of guide bearing cooling water, avoid guide bearing to match imperial body to wear and tear, extend the life-span on probation of circulating water pump; Also make the operation of circulating water pump more stablize and safety, for the safety reliability of raising equipment and unit operation provides more powerful guarantee simultaneously.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model circulating water pump guide bearing lubricating and cooling system one preferred embodiment;
Fig. 2 is the structural representation of another embodiment of the utility model circulating water pump guide bearing lubricating and cooling system.
Primary component label declaration:
The utility model:
1: circulating water pump 2: chilled water unit 21: suction booster
22: entrance butterfly valve 23: exit butterfly valve 24: check valve
25: filter 26: bypass electric valve
Embodiment
In order to there be understanding clearly to technical characteristics of the present utility model, object and effect, now contrast accompanying drawing and embodiment of the present utility model is described.
Referring to shown in Fig. 1, is the schematic diagram of a preferred embodiment of circulating water pump guide bearing lubricating and cooling system of the present utility model.As shown in the figure, in this preferred embodiment, this circulating water pump guide bearing lubricating and cooling system comprises circulating water pump 1 and chilled water unit 2; The stuffing box body place at described circulating water pump 1 top offers the oblique through hole of the annular space be communicated between its inner connecting tube and pump shaft; Described chilled water unit 2 comprises cooling water pipeline and is arranged at the suction booster 21 on this cooling water pipeline, and described suction booster 21 both sides are respectively equipped with entrance butterfly valve 22 and exit butterfly valve 23, are provided with check valve 24 between described suction booster 21 and exit butterfly valve 23; Described cooling water pipeline entry end is connected with the female pipe of the outlet of described circulating water pump 1, and its outlet end is connected with described oblique through hole.
Cooling water flow enters by the oblique through hole at stuffing box body place the annular space that inner connecting tube and pump shaft form, and reaches pump shaft bottom, need overcome the various resistances such as the flow passage resistance that between guide bearing and axle, close gap causes.Therefore, needing in system to arrange suction booster is cooling water pressurization.At circulating water pump 1 run duration, cooling water system must provide cooling water for following pump guide bearing incessantly, has installed suction booster for this reason in systems in which altogether additional and has carried out supercharging to it.
Circulating water pump guide bearing lubricating and cooling system of the present utility model as above, in its preferred embodiment, is provided with filter between described entrance butterfly valve 22 and suction booster 21.For at utmost controlled cooling model impurities in water content, reduce grit thing and enter between guide bearing wearing and tearing are caused to axle and bearing, pump intake position is provided with filter 25.Further, this filter 25, for having the filter of backwashing function, can also import and export differential pressure by monitor filter 25, carries out filter 25 backwash in real time.
Circulating water pump guide bearing lubricating and cooling system of the present utility model as above, preferably, described circulating water pump 1 stuffing box body is provided with multiple oblique through hole, and described oblique through hole is 120 ° of settings around interval, axle center.Oblique through hole is set at 120 °, interval, stuffing box body place, the top, as the entrance of the new cooling medium of circulating water pump, makes entering of cooling water more all fully even.Further, the setting of oblique through hole also can be the multiple oblique through hole of various arrangement, is not defined as 3.
Circulating water pump guide bearing lubricating and cooling system of the present utility model as above, preferably, imperial body matched by the guide bearing of described circulating water pump 1 lower end is L-type.Being set to L-type by guide bearing being matched imperial body, effectively can reducing the loss of cooling water, make cooling water to the lubrication of guide bearing and lower the temperature more effectively with abundant.
Circulating water pump guide bearing lubricating and cooling system of the present utility model as above, its preferably, described chilled water unit 2 comprises cooling water pipeline described in two groups, and described in two groups, cooling water pipeline connects setting side by side.In order to increase cooling water system reliability of operation, refer to shown in Fig. 2, add the cooling water pipeline that a road is for subsequent use in addition, can prevent when a road cooling water pipeline breaks down, a road cooling water pipeline interlocked startup for subsequent use can be had to replace timely, ensure the cooling of circulating water pump.Also can being when needing larger pressure, opening two-way cooling water pipeline simultaneously, pressurizeing.
Circulating water pump guide bearing lubricating and cooling system of the present utility model as above, it preferably, shown in Fig. 2, described chilled water unit 2 also comprises the all-pass bypass be connected side by side with described cooling water pipeline, and described all-pass bypass is provided with bypass electric valve 26.This all-pass bypass is used for when the equal fault of described two-way cooling line, and such as suction booster starts all failed, and bypass electric valve 26 is automatically opened to standard-sized sheet valve position in set time, remains that cooling water uninterruptedly cools following pump guide bearing.
Circulating water pump guide bearing lubricating and cooling system of the present utility model as above, preferably, it comprises four described circulating water pump 1 connected side by side.That is, described in one group, chilled water unit 2 correspondence is connected with a circulating water pump unit, and this circulating water pump unit is set to four circulating water pump 1 connected side by side.The quantity of the circulating water pump 1 that certain corresponding chilled water unit 2 can connect can design, not as limit according to site specific.
Circulating water pump guide bearing lubricating and cooling system of the present utility model as above, preferably, described suction booster 21 lift is 30m, and described suction booster 21 flow is for being more than or equal to 24m
3/ h.
Preferably, in circulating water pump guide bearing lubricating and cooling system of the present utility model, suction booster 21 type selecting is centrifugal pipeline mounted pump, wherein motor dispatches from the factory with the coaxial entirety of pump, has both decreased workload during in-site installation, turn avoid the excessive vibration caused of wheel nonconcentricity.The circulating water needing enough pressure ability " passing " circulating water pump actings due to cooling water reaches inner connecting tube guide bearing bottom, therefore: H=H1+H2+ Δ H (1)
In formula: H-suction booster lift; H1-circulating pump head: 15m; The height of water: 10m in H2-circulating water pump; Δ H-cooling water linear loss: 5m.
Can calculate suction booster lift H by formula (1) is 30m.
According to the operation conditions of individual power plants reality, the cooling water inflow of every platform circulating water pump should be not less than 6m
3/ h could cool fully to circulating water pump guide bearing, therefore suction booster flow should not be less than 24m
3/ h.
Circulating water pump guide bearing lubricating and cooling system of the present utility model, runnability is stablized, by to following water-change pump guide bearing cooling system, cooling water fully can take away guide bearing and the fricative heat of axle, make guide bearing obtain good cooling, prevent guide bearing to match the wearing and tearing of imperial body to the full extent and melt.Simultaneity factor middle filtrator filters cooling impurities in water, reduces the wearing and tearing of particulate matter to guide bearing and axle, extends the working life of guide bearing, ensure that circulating water pump safe and stable operation within the repair cycle.
The foregoing is only the schematic embodiment of the utility model, and be not used to limit scope of the present utility model.Any those skilled in the art, equivalent variations done under the prerequisite not departing from design of the present utility model and principle and amendment, all should belong to the scope of the utility model protection.
Claims (8)
1. a circulating water pump guide bearing lubricating and cooling system, is characterized in that, comprises circulating water pump and chilled water unit; The stuffing box body place at described circulating water pump top offers the oblique through hole of the annular space be communicated between its inner connecting tube and pump shaft; Described chilled water unit comprises cooling water pipeline and is arranged at the suction booster on this cooling water pipeline, and described suction booster both sides are respectively equipped with entrance butterfly valve and exit butterfly valve, are provided with check valve between described suction booster and exit butterfly valve; Described cooling water pipeline entry end is connected with the female pipe of described circulating water delivery side of pump, and its outlet end is connected with described oblique through hole.
2. circulating water pump guide bearing lubricating and cooling system as claimed in claim 1, is characterized in that, be provided with filter between described entrance butterfly valve and suction booster.
3. circulating water pump guide bearing lubricating and cooling system as claimed in claim 2, it is characterized in that, described circulating water pump stuffing box body is provided with multiple oblique through hole, and described oblique through hole is 120 ° of settings around interval, axle center.
4. circulating water pump guide bearing lubricating and cooling system as claimed in claim 3, it is characterized in that, imperial body matched by the guide bearing of described circulating water pump lower end is L-type.
5. the circulating water pump guide bearing lubricating and cooling system as described in Claims 1-4 any one, it is characterized in that, described chilled water unit comprises cooling water pipeline described in two groups, and described in two groups, cooling water pipeline connects setting side by side.
6. circulating water pump guide bearing lubricating and cooling system as claimed in claim 5, it is characterized in that, described chilled water unit also comprises the all-pass bypass be connected side by side with described cooling water pipeline, and described all-pass bypass is provided with bypass electric valve.
7. circulating water pump guide bearing lubricating and cooling system as claimed in claim 6, is characterized in that, it comprises three described circulating water pump connected side by side.
8. circulating water pump guide bearing lubricating and cooling system as claimed in claim 7, it is characterized in that, described suction booster lift is 30m, and described suction booster flow is for being more than or equal to 24m
3/ h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520545942.8U CN204828068U (en) | 2015-07-24 | 2015-07-24 | Circulating water pump guide bearing lubrication and cooling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520545942.8U CN204828068U (en) | 2015-07-24 | 2015-07-24 | Circulating water pump guide bearing lubrication and cooling system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204828068U true CN204828068U (en) | 2015-12-02 |
Family
ID=54685675
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520545942.8U Expired - Fee Related CN204828068U (en) | 2015-07-24 | 2015-07-24 | Circulating water pump guide bearing lubrication and cooling system |
Country Status (1)
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| CN (1) | CN204828068U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112780401A (en) * | 2021-01-29 | 2021-05-11 | 徐工消防安全装备有限公司 | Booster pump water-free operation cooling device and method |
-
2015
- 2015-07-24 CN CN201520545942.8U patent/CN204828068U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112780401A (en) * | 2021-01-29 | 2021-05-11 | 徐工消防安全装备有限公司 | Booster pump water-free operation cooling device and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151202 Termination date: 20160724 |