CN203412804U - Lubricating oil system for steam-driven water feeding pump - Google Patents
Lubricating oil system for steam-driven water feeding pump Download PDFInfo
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- CN203412804U CN203412804U CN201320534606.4U CN201320534606U CN203412804U CN 203412804 U CN203412804 U CN 203412804U CN 201320534606 U CN201320534606 U CN 201320534606U CN 203412804 U CN203412804 U CN 203412804U
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- oil
- pump
- lubricating
- low
- steam feed
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Abstract
The utility model provides a lubricating oil system for a steam-driven water feeding pump. The lubricating oil system comprises a lubricating oil pump, an energy accumulator, an oil cooler, a low-oil pressure low switch and a low-oil pressure switch. A pipeline of a bearing oil inlet of the steam-driven water feeding pump is provided with a pressure leading point of the low-oil pressure low switch; the low-oil pressure low switch is electrically connected to a control device; the energy accumulator is connected with an main oil pump in parallel and is connected to a pipeline between the main oil pump and the oil cooler by a pipeline; the pressure leading point of the low-oil pressure low switch is arranged at an outlet of the lubricating oil pump; the low-oil pressure switch is electrically connected with the control device. According to the lubricating oil system for the steam-driven water feeding pump, a manner of arranging the pressure leading point of the low-oil pressure low switch on an oil supplying pipeline at the bearing oil inlet of the steam-driven water feeding pump is adopted so that the accurate detection of a pressure of lubricating oil entering a bearing can be ensured and a pump jumping movement is done in time when the oil pressure of the lubricating oil entering the bearing reaches a low condition. The energy accumulator can prevent oil pressure fluctuation caused by switching the lubricating oil pump and avoids pump jumping incorrect movement caused by the fluctuation of the oil pressure.
Description
Technical field
The utility model relates to a kind of lubricating oil system, and especially a kind of steam feed pump lubricating oil system, belongs to field of generating equipment.
Background technique
Steam feed pump is used for to boiler water supply at power generating equipment, and steam feed pump is protected equipment because lubricant oil forces down to occur to trip in running, otherwise steam feed pump bearing temperature can sharply raise and damage.Because lubrication pressure declines, the fluctuation of lubricant oil oil pressure is larger, and nonaction may occur in protection.In production practices, lubricant oil forces down low switch impulse point and is arranged on oil pump outlet, causes oil pressure to detect error, and protection malfunction possibility increases.
In view of this spy proposes the utility model.
Model utility content
The technical problems to be solved in the utility model is to overcome the deficiencies in the prior art, and a kind of steam feed pump lubricating oil system is provided, and can solve pressure fluctuation steam feed pump lubricant oil protection malfunction problem when large.
For solving the problems of the technologies described above, the utility model adopts the basic conception of technological scheme to be:
Steam feed pump lubricating oil system, comprises lubricating pump, accumulator, oil cooler, oil purifier and low fuel pressure low switch.
Lubricating pump comprises main oil pump and emergency bearing oil pump, main oil pump connects fuel tank, and connect successively oil cooler and oil purifier by pipeline, oil purifier is connected to steam feed pump bearing filler opening by pipeline, low fuel pressure low switch impulse point is set on the pipeline of steam feed pump bearing filler opening, and low fuel pressure low switch is electrically connected to control gear; Steam feed pump bearing oil outlet connects fuel tank by pipeline; Emergency bearing oil pump connects fuel tank, and is connected to steam feed pump bearing filler opening by pipeline; Accumulator is in parallel with main oil pump and be connected on the pipeline between main oil pump and oil cooler by pipeline, and the flow controller of Y type is installed on the oil supply pipeline being connected between accumulator and oil cooler.
Main oil pump comprises two lubricating pumps in parallel.Main oil pump is AC Lub oil pump, and emergency bearing oil pump is DC lubricating.
Steam feed pump lubricating oil system also comprises low fuel pressure switch, and the impulse point of low fuel pressure switch is arranged at lubricating pump outlet, and low fuel pressure switch is electrically connected to control gear.
Adopt after technique scheme, the utility model compared with prior art has following beneficial effect.
The impulse point that the utility model steam feed pump lubricating oil system is forced down lubricant oil low switch moves to the oil supply pipeline of steam feed pump bearing filler opening from lubricating pump outlet, and is provided with accumulator in the oil supply pipeline of lubricating pump.
The impulse point that lubricant oil forces down low switch is arranged on lubricating pump outlet and enters the oil pressure of bearing not bery accurate for detection, thereby can not when steam feed pump bearing oil pressure reaches low jumping pump situation, make in time and jump pump action, cause misaction to damage steam feed pump.The utility model steam feed pump lubricating oil system adopts the mode that the impulse point of low fuel pressure low switch is arranged on to the bearing filler opening oil supply pipeline place of steam feed pump, can guarantee to enter bearing lubricating oil pressure accurate detection and when the lubricant oil oil pressure that enters bearing reaches low situation, make in time and jump pump action.Accumulator can prevent the pressure fluctuation that lubricating pump causes when switching, and avoided because pressure fluctuation is compared with the jumping pump malfunction causing greatly, and the pressure drop of flow controller can prevent accumulator work time is too fast.
Below in conjunction with accompanying drawing, embodiment of the present utility model is described in further detail.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model steam feed pump lubricating oil system.
Fig. 2 is flow controller in the utility model steam feed pump lubricating oil system scheme of installation in oil supply pipeline.
Fig. 3 is the structural representation of the flow controller in the utility model steam feed pump lubricating oil system.
1, the first main oil pump, the 2, second main oil pump, 3, emergency bearing oil pump, 4, oil cooler, 5, low fuel pressure switch, 6, oil purifier, 7, control gear, 8, oil supply pipeline, 9, low fuel pressure low switch, 10, bearing, 11, steam feed pump, 12, accumulator, 13, oil returning tube, 14, throttle valve, 15, check valve, 16, fuel tank, 17, flow controller, 18, hole.
Embodiment
As shown in Figure 1, the utility model steam feed pump lubricating oil system, comprises lubricating pump, accumulator 12, oil cooler 4, oil purifier 6 and low fuel pressure low switch 9.
Lubricating pump comprises main oil pump and emergency bearing oil pump 3, and check valve 15 and throttle valve 14 are installed on lubricating pump outlet conduit successively.
Main oil pump comprises two lubricating pumps in parallel, is respectively the first main oil pump 1 and the second main oil pump 2.
Main oil pump is AC Lub oil pump, main oil pump connects fuel tank, main oil pump outlet connects check valve 15 and by pipeline, is connected successively oil cooler 4 and oil purifier 6 after throttle valve 14, and oil cooler 4 comprises two oil coolers in parallel, and oil purifier 6 comprises two oil purifiers in parallel.Accumulator 12 is in parallel with main oil pump and be connected on the pipeline between main oil pump and oil cooler 4 by pipeline.
Oil purifier 6 is connected to the bearing filler opening of steam feed pump 11 by pipeline, pipeline from lubricating pump or accumulator to the bearing filler opening of steam feed pump 11 is oil supply pipeline 8, the impulse point of low fuel pressure low switch 9 is set on the pipeline at bearing 10 filler opening places, low fuel pressure low switch 9 is electrically connected to control gear 7, and control gear 7 is controlled the operation of steam feed pump and stops.
In accumulator 12, store some high pressure oils, when main oil pump switches, or main oil pump breaks down while causing lubricating oil system pressure decreased, and the oil being stored in accumulator 12 is added in oil supply pipeline, make the oil pressure in oil supply pipeline keep stable, prevent that the pressure fluctuation in oil supply pipeline is larger.
As shown in Figure 1, 2, 3, on the oil supply pipeline 8 connecting, flow controller 17 is installed at accumulator 12 oil outlets, flow controller is installed on the oil supply pipeline before oil cooler 4.Flow controller 17 is the flow controller of Y type, itself and oil supply pipeline 8 are Y type and install, flow controller 17 is cylindric flow controller porose on wall, Y type in the oblique insertion oil supply pipeline 8 of flow controller 17 is propped up in the mouth of pipe, and by the gap between the Y type arm of flow controller and oil supply pipeline by supporting end bracket enclosed, it is all porose that flow controller 17 is positioned at sidewall and the bottom of oil supply pipeline, end sealing.Thereby flow controller 17 makes flow controller bottom contact and make flow controller occupy oil supply pipeline inner chamber with oil supply pipeline wall, make the lubricant oil in oil supply pipeline inner by the hole inflow flow controller of self, by hole, flow out self again, continuation is flowed in oil supply pipeline, while passing through flow controller due to the oil in oil supply pipeline, pass through hole 18, therefore the path that the oil in oil supply pipeline is passed through narrows down, both can make extreme pressure lubricant in accumulator flow in oil supply pipeline by the hole 18 of flow controller self and then flow into the bearing filler opening of steam feed pump 11, the oily rate of outflow in the time of can regulating decompression again in accumulator, prevent from reducing the too fast chaser that causes because of oil pressure.Flow controller 17 can be extracted to change or clean from oil supply pipeline, after extracting, the Y type of oil supply pipeline is propped up to the mouth of pipe and seals completely with end cap.
When the first main oil pump 1 and the second main oil pump 2 switch, the pressure fluctuation in oil supply pipeline 8 is larger, and when accumulator 12 being set can preventing that main oil pump from switching, pressure fluctuation is excessive, avoids the jumping pump malfunction of steam feed pump 11.
The oil outlet of the bearing 10 of steam feed pump 11 is connected to fuel tank 16 by oil returning tube 13.
Lubricant oil is extracted out from fuel tank 16 by lubricating pump, after oil cooler 4 is cooling and oil purifier 6 filter bearing 10 filler openings that flow to steam feed pump 11 by oil supply pipeline 8, through bearing 10 oil outlets, flow out and flow to fuel tank 16 by oil returning tube 13.Two oil coolers 4 and two oil purifiers 6 in parallel that are arranged in parallel can or be worked depending on operating mode alternation simultaneously.
Emergency bearing oil pump 3 is DC lubricating, and emergency bearing oil pump 3 connects fuel tank, and by pipeline, is connected to the bearing filler opening of steam feed pump 11.When main oil pump fault, emergency bearing oil pump 3 operations are directly to bearing 10 fuel feeding.
In the outlet port of lubricating pump, be also provided with the impulse point of low fuel pressure switch 5, low fuel pressure switch 5 is electrically connected to control gear 7.The impulse point of low fuel pressure switch 5 arranges in the outlet port of lubricating pump, can detect the outlet oil pressure of lubricating pump, when lubricating pump outlet oil pressure is lower, by control gear 7, give the alarm or make steam feed pump 11 jump pump, preventing bearing 10 damages of steam feed pump 11.But because lubricant oil has certain pressure drop when lubricating pump arrives the bearing 10 of steam feed pumps 11 through whole oil supply pipeline 8, therefore the oil pressure of lubricant oil when entering bearing 10 is also inconsistent with the oil pressure of lubricating pump outlet, only at bearing filler opening place, carry out oil pressure detection and could reflect more exactly the lubricant oil oil pressure that enters bearing 10, thereby the impulse point of low fuel pressure low switch 9 is set on the pipeline at bearing 10 filler opening places, in the time of could Lubricating Oil forces down to certain value in bearing 10, triggering low fuel pressure low switch 9 and then trigger control device 7 makes steam feed pump 11 jump pumps in time, avoid mistake action and rejecting action.
Adopt after technique scheme, the utility model compared with prior art has following beneficial effect.
The impulse point that the utility model steam feed pump lubricating oil system is forced down lubricant oil low switch moves to the oil supply pipeline of steam feed pump bearing filler opening from lubricating pump outlet, and is provided with accumulator in the oil supply pipeline of lubricating pump.
The impulse point that lubricant oil forces down low switch is arranged on lubricating pump outlet and enters the oil pressure of bearing not bery accurate for detection, thereby can not when steam feed pump bearing oil pressure reaches low jumping pump situation, make in time and jump pump action, cause misaction to damage steam feed pump.Thereby the utility model steam feed pump lubricating oil system adopts the mode at oil supply pipeline place that the impulse point of low fuel pressure low switch is arranged on to the bearing filler opening of steam feed pump, can guarantee to enter bearing lubricating oil pressure accurate detection and when the lubricant oil oil pressure that enters bearing reaches low situation, make in time and jump pump action.Accumulator can prevent the pressure fluctuation that lubricating pump causes when switching, and avoided because pressure fluctuation is compared with the jumping pump malfunction causing greatly, and the pressure drop of flow controller can prevent accumulator work time is too fast.And in the outlet port of lubricating pump, be provided with the impulse point of low fuel pressure switch; can play the suggesting effect of low fuel pressure; before being down to low level, oil pressure points out; and the setting of two oil pressure switch impulse point positions has also embodied rationality, science and the feasibility of its setting, low fuel pressure switch and two oil pressure switch of low fuel pressure low switch the higher protection requirement that can meet equipment is set.
Embodiment in above-described embodiment can further combine or replace; and embodiment is described preferred embodiment of the present utility model; not design of the present utility model and scope are limited; do not departing under the prerequisite of the utility model design philosophy; the various changes and modifications that in related domain, professional and technical personnel makes the technical solution of the utility model, all belong to protection domain of the present utility model.
Claims (9)
1. steam feed pump lubricating oil system, is characterized in that: comprise lubricating pump, accumulator, oil cooler, oil purifier and low fuel pressure low switch,
Lubricating pump comprises main oil pump and emergency bearing oil pump, main oil pump connects fuel tank, and connect successively oil cooler and oil purifier by pipeline, oil purifier is connected to steam feed pump bearing filler opening by pipeline, low fuel pressure low switch impulse point is set on the pipeline of described steam feed pump bearing filler opening, and low fuel pressure low switch is electrically connected to control gear; Steam feed pump bearing oil outlet connects fuel tank by pipeline; Emergency bearing oil pump connects fuel tank, and is connected to steam feed pump bearing filler opening by pipeline; Accumulator is in parallel with main oil pump and be connected on the pipeline between main oil pump and oil cooler by pipeline, and the flow controller of Y type is installed on the oil supply pipeline being connected between accumulator and oil cooler.
2. steam feed pump lubricating oil system according to claim 1, is characterized in that: also comprise low fuel pressure switch, the impulse point of low fuel pressure switch is arranged at lubricating pump outlet, and low fuel pressure switch is electrically connected to control gear.
3. steam feed pump lubricating oil system according to claim 1 and 2, it is characterized in that: flow controller and oil supply pipeline are Y type to be installed, and flow controller is cylindric flow controller porose on wall, in oblique insertion oil supply pipeline, the sidewall and the bottom that are positioned at oil supply pipeline are all porose, end sealing.
4. steam feed pump lubricating oil system according to claim 3, is characterized in that: described main oil pump comprises two lubricating pumps in parallel.
5. steam feed pump lubricating oil system according to claim 4, is characterized in that: main oil pump is AC Lub oil pump.
6. steam feed pump lubricating oil system according to claim 3, is characterized in that: described emergency bearing oil pump is DC lubricating.
7. steam feed pump lubricating oil system according to claim 3, is characterized in that: lubricating pump outlet is provided with check valve and throttle valve.
8. steam feed pump lubricating oil system according to claim 3, is characterized in that: described oil cooler comprises two oil coolers in parallel.
9. steam feed pump lubricating oil system according to claim 3, is characterized in that: described oil purifier comprises two oil purifiers in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320534606.4U CN203412804U (en) | 2013-08-29 | 2013-08-29 | Lubricating oil system for steam-driven water feeding pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320534606.4U CN203412804U (en) | 2013-08-29 | 2013-08-29 | Lubricating oil system for steam-driven water feeding pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203412804U true CN203412804U (en) | 2014-01-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320534606.4U Expired - Fee Related CN203412804U (en) | 2013-08-29 | 2013-08-29 | Lubricating oil system for steam-driven water feeding pump |
Country Status (1)
| Country | Link |
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| CN (1) | CN203412804U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109026818A (en) * | 2018-10-18 | 2018-12-18 | 毕森机械（上海）有限公司 | A kind of air blower with lubricating oil system |
| CN109209858A (en) * | 2017-07-03 | 2019-01-15 | 大唐保定热电厂 | A kind of external lubricating oil system of frequency conversion feed pump |
-
2013
- 2013-08-29 CN CN201320534606.4U patent/CN203412804U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109209858A (en) * | 2017-07-03 | 2019-01-15 | 大唐保定热电厂 | A kind of external lubricating oil system of frequency conversion feed pump |
| CN109209858B (en) * | 2017-07-03 | 2024-01-26 | 大唐保定热电厂 | External lubricating oil system of variable-frequency water supply pump |
| CN109026818A (en) * | 2018-10-18 | 2018-12-18 | 毕森机械（上海）有限公司 | A kind of air blower with lubricating oil system |
| CN109026818B (en) * | 2018-10-18 | 2024-05-03 | 毕森机械（上海）有限公司 | Blower with lubricating oil system |
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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 |
Granted publication date: 20140129 Termination date: 20180829 |
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| CF01 | Termination of patent right due to non-payment of annual fee |