CN208966380U - Prevent the safe voltage-stabilizing system of steam-turbine lubrication oil pump pneumatosis starting failure - Google Patents
Prevent the safe voltage-stabilizing system of steam-turbine lubrication oil pump pneumatosis starting failure Download PDFInfo
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- CN208966380U CN208966380U CN201821734101.1U CN201821734101U CN208966380U CN 208966380 U CN208966380 U CN 208966380U CN 201821734101 U CN201821734101 U CN 201821734101U CN 208966380 U CN208966380 U CN 208966380U
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Abstract
The utility model discloses a kind of safe voltage-stabilizing systems for preventing the starting failure of steam-turbine lubrication oil pump pneumatosis comprising top petrol tank；Top petrol tank is connected to by flowline with the pump housing grease chamber of grease pump；First manual valve is installed on oil inlet pipe, solenoid valve is installed on flowline, fluid level transmitter is installed at the top of top petrol tank, pressure transmitter is electrically connected with the input terminal of DCS control system, and the output end of DCS control system is electrically connected with grease pump and solenoid valve.Advantage: the utility model can guarantee that grease pump will not build up air in stand-by state in pump housing grease chamber by top petrol tank, to effectively solve the problems, such as that grease pump starts transient failure；In addition, when lubricating oil system interlocked startup grease pump, by the way that accumulator is arranged, it can effectively avoid the fluctuation due to lubricating oil system oil pressure and oil-break caused to generating set, and then the security risk of Bearing Segment Burning is avoided, and then guarantee generating set safe and stable operation.
Description
Technical field:
The utility model relates to turbine LP rotors lubrication technical fields, in particular to prevent steam-turbine lubrication oil pump product
The safe voltage-stabilizing system of gas starting failure.
Background technique:
Turbine oil system is the important system of turbine LP rotors, when the main oil pump of the system breaks down
When, it may appear that turbine LP rotors oil-break burning accident even results in turbine LP rotors and scraps；As a result, in order to avoid
Accident occurs, and turbine oil system is usually additionally provided with grease pump, when main oil pump breaks down, the main oil of lubricating oil system
Pipe pressure reduces, and when the pressure detected of the pressure transmitter by being mounted on main oil pipe reaches setting value, Real-time Feedback is arrived
DCS control system controls grease pump by DCS control system and starts to start, and then continued from grease pump to turbine generator
Unit supplies lubricating oil, guarantees Turbo-generator Set safe and stable operation.
But when spare grease pump starting, it usually will appear pneumatosis phenomenon in the pump housing grease chamber of grease pump, thus
It will cause the failure of grease pump instantaneous starting, or even be not normally functioning for a long time, and then make Turbo-generator Set lubricating oil system
System pressure cannot reach setting value, cause Turbo-generator Set oil-break tile kilning, or even the serious accident scrapped；In addition, working as
When grease pump normal interlocking starts, lubricating oil system, which will appear pressure fluctuation, sometimes causes Turbo-generator Set to be interrupted in short-term
Oil, the security risk that the bearing shell of Turbo-generator Set is damaged.
Utility model content:
The purpose of this utility model is to provide a kind of generation for effectivelying prevent pneumatosis in spare grease pump, Jin Erbao
The safe voltage-stabilizing system for preventing the starting failure of steam-turbine lubrication oil pump pneumatosis of card turbine LP rotors safe and stable operation.
The utility model is implemented by following technical solution: preventing the safe pressure stabilizing of steam-turbine lubrication oil pump pneumatosis starting failure
System comprising oil inlet pipe, flowline and closed top petrol tank；The oil outlet of main fuel tank is connected to the oil inlet of main oil pump,
The oil outlet of the main oil pump is connected to by main oil pipe with the oil system of generating set, in parallel with the main oil pump to be equipped with lubricating oil
Pump, the oil inlet of the grease pump are connected to the main fuel tank, and the oil outlet of the grease pump is connected to the main oil pipe；
The oil inlet of the top petrol tank is connected to by the oil inlet pipe with the main oil pipe, and the oil outlet of the top petrol tank passes through institute
State flowline to be connected to the pump housing grease chamber of the grease pump, first manual valve be installed on the oil inlet pipe, it is described go out
It is installed with solenoid valve on oil pipe, is installed with fluid level transmitter at the top of the top petrol tank, is installed on the main oil pipe
Pressure transmitter is electrically connected with the input terminal of DCS control system, the output end of the DCS control system and the grease pump and
The solenoid valve electrical connection.
Further, the top of the top petrol tank is connected to by overflow pipe with the main fuel tank.
It further, further include smoke exhaust fan, the air inlet of the smoke exhaust fan is connected to the top of the main fuel tank.
Further, the second hand-operated valve is also installed on the flowline.
It further, further include accumulator, the accumulator is connected to by fuel feed pump with the main oil pipe.
Further, third hand-operated valve is installed on the fuel feed pump.
The advantages of the utility model: the utility model can guarantee grease pump pump housing in stand-by state by top petrol tank
Air will not be built up in grease chamber, to effectively solve the problems, such as that grease pump starts transient failure；In addition, when lubricating oil system joins
Lock starting grease pump when, by be arranged accumulator, can effectively avoid the fluctuation due to lubricating oil system oil pressure and to generator
Group causes oil-break, and then avoids the security risk of Bearing Segment Burning, and then guarantees generating set safe and stable operation.
Detailed description of the invention:
Fig. 1 is the structural schematic diagram of the utility model.
The components in the drawings are labeled as follows: top petrol tank 1, oil inlet pipe 2, main oil pipe 3, flowline 4, grease pump 5,
One hand-operated valve 6, solenoid valve 7, the second hand-operated valve 8, fluid level transmitter 9, DCS control system 10, overflow pipe 11, main fuel tank 12, row
Cigarette blower 13, accumulator 14, fuel feed pump 15, third hand-operated valve 16, main oil pump 17, pressure transmitter 18, generating set 19.
Specific embodiment:
As shown in Figure 1, preventing the safe voltage-stabilizing system of steam-turbine lubrication oil pump pneumatosis starting failure comprising oil inlet pipe 2,
Flowline 4 and closed top petrol tank 1；The oil outlet of main fuel tank 12 is connected to the oil inlet of main oil pump 17, and main oil pump 17 goes out
Hydraulic fluid port is connected to by main oil pipe 3 with the oil system of generating set 19, in parallel with main oil pump 17 to be equipped with grease pump 5, grease pump 5
Oil inlet be connected to main fuel tank 12, the oil outlet of grease pump 5 is connected to main oil pipe 3；The oil inlet of top petrol tank 1 by into
Oil pipe 2 is connected to main oil pipe 3, and the oil outlet of top petrol tank 1 is connected to by flowline 4 with the pump housing grease chamber of grease pump 5, into
It is installed with first manual valve 6 on oil pipe 2, solenoid valve 7 is installed on flowline 4, is installed with liquid level at the top of top petrol tank 1
Transmitter 9, the pressure transmitter 18 being installed on main oil pipe 3 are electrically connected with the input terminal of DCS control system 10, DCS control system
The output end of system 10 is electrically connected with grease pump 5 and solenoid valve 7；In lubricating oil system normal course of operation, fluid level transmitter 9 is real
When detection top petrol tank 1 in liquid level, and Real-time Feedback is in DCS control system 10, when the liquid level that fluid level transmitter 9 detects is lower than
When setting value, DCS control system 10 issues alarm, and opens first manual valve 6 in time, passes through oil inlet pipe 2 by main oil pump 17
To 1 make-up oil of top petrol tank；In lubricating oil system normal course of operation, solenoid valve 7 is kept it turned on, and makes top petrol tank
1 is connected to the holding of the pump housing grease chamber of grease pump 5, avoids building up air in grease pump 5, when the main oil pump in lubricating oil system
17 break down, and in the signal feedback that pressure transmitter 18 will test in DCS control system 10, control grease pump 5 and start, together
When, DCS control system 10 controls solenoid valve 7 and closes, and top petrol tank 1 is isolated with grease pump 5, keeps in top petrol tank 1
Oil level.
The top of top petrol tank 1 is connected to by overflow pipe 11 with main fuel tank 12, and the lubricating oil in top petrol tank 1 can be by overflowing
Flow tube 11 overflows in main fuel tank 12；It further includes smoke exhaust fan 13, the air inlet of smoke exhaust fan 13 and the top of main fuel tank 12
Connection, makes to keep negative pressure state in main fuel tank 12 by smoke exhaust fan 13, when the air in lubricating oil system enters grease pump 5
Pump housing grease chamber in when, air enters top petrol tank 1 along flowline 4, and the air in top petrol tank 1 can enter along overflow pipe 11 to be led
It in fuel tank 12, and then is drained into atmosphere by smoke exhaust fan 13, to be more advantageous to the air in removal of lubricant system, is more had
It influences to operate normally beneficial to avoiding the indoor accumulation air of pump housing oil of grease pump 5.
Also install the second hand-operated valve 8 on flowline 4, in lubricating oil system operational process, the second hand-operated valve 8 is remained
Opening state closes the second hand-operated valve 8, when needing to clear up or overhauling top petrol tank 1 convenient for handling it.
It further includes accumulator 14, and accumulator 14 is connected to by fuel feed pump 15 with main oil pipe 3；Lubricating oil system operates normally
In the process, main oil pipe 3 is connected to accumulator 14 always, is made in accumulator 14 full of the profit being consistent with lubricating oil system pressure
Lubricating oil, when the oil pressure in lubricating oil system generates fluctuation and increases, accumulator 14 plays the role of absorbing to reduce oil pressure
Lubricating oil system oil pressure, and then stablize lubricating oil system oil pressure；When the oil pressure in lubricating oil system generates fluctuation and reduces, store
Energy device 14 plays the role of discharging oil pressure of the lubricating oil to improve lubricating oil system, and then stablizes lubricating oil system oil pressure, as a result,
When pressure fluctuation occurs in lubricating oil system, the constant oil pressure available always of Turbo-generator Set 19 is guaranteed by accumulator 14
Lubricating oil is at the state of safely and steadily running.
Third hand-operated valve 16 is installed on fuel feed pump 15, third hand-operated valve 16 remains opening state, clear when needing
When reason or maintenance accumulator 14, third hand-operated valve 16 is closed, convenient for handling it.
Operation instruction: original state, the second hand-operated valve 8 and third hand-operated valve 16 are in the open state, 13 He of smoke exhaust fan
Main oil pump 17 is in operating status, by main oil pump 17 to generating set 19 normally for lubricating oil, while storing up into accumulator 14
Lubricating oil is deposited, grease pump 5 is in shutdown status, and solenoid valve 7 is in the open state, and the lubricating oil in top petrol tank 1 is by going out
Oil pipe 4 is connected to the pump housing grease chamber of grease pump 5, is made in the pump housing grease chamber of grease pump 5 always full of lubricating oil；Work as main oil pump
17 when breaking down, and the pressure transmitter 18 on main oil pipe 3 detects pressure reduction, signal Real-time Feedback is controlled in DCS is
System 10 controls solenoid valve 7 by DCS control system 10 and closes, while starting grease pump 5, passes through the lubricating oil normally started
Pump 5 quickly supplies lubricating oil to generating set 19, and stablizes the fast quick-recovery of the oil pressure in main oil pipe 3；Lubricating oil system operation
In the process, it when fluid level transmitter 9 detects the oil level in top petrol tank 1 lower than setting value, is issued by DCS control system 10
Alarm, then first manual valve 6 is opened by staff, lubricating oil passes through main oil pipe 3 to 1 fuel feeding of top petrol tank, when top petrol tank 1
When interior lubricating oil is flowed out from overflow pipe 11, first manual valve 6 is closed.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Within the spirit and principle of utility model, any modification, equivalent replacement, improvement and so on should be included in the utility model
Protection scope within.
Claims (6)
1. preventing the safe voltage-stabilizing system of steam-turbine lubrication oil pump pneumatosis starting failure, which is characterized in that it includes oil inlet pipe, goes out
Oil pipe and closed top petrol tank；The oil outlet of main fuel tank is connected to the oil inlet of main oil pump, and the oil outlet of the main oil pump is logical
Main oil pipe is crossed to be connected to the oil system of generating set；It is in parallel with the main oil pump be equipped with grease pump, the grease pump into
Hydraulic fluid port is connected to the main fuel tank, and the oil outlet of the grease pump is connected to the main oil pipe；The oil inlet of the top petrol tank
Mouth is connected to by the oil inlet pipe with the main oil pipe, and the oil outlet of the top petrol tank passes through the flowline and the lubrication
The pump housing grease chamber of oil pump is connected to, and first manual valve is installed on the oil inlet pipe, is installed with solenoid valve on the flowline,
It is installed with fluid level transmitter at the top of the top petrol tank, the pressure transmitter and DCS being installed on the main oil pipe control
The input terminal of system is electrically connected, and the output end of the DCS control system is electrically connected with the grease pump and the solenoid valve.
2. the safe voltage-stabilizing system according to claim 1 for preventing the starting failure of steam-turbine lubrication oil pump pneumatosis, feature
It is, the top of the top petrol tank is connected to by overflow pipe with the main fuel tank.
3. the safe voltage-stabilizing system according to claim 2 for preventing the starting failure of steam-turbine lubrication oil pump pneumatosis, feature
It is, further includes smoke exhaust fan, the air inlet of the smoke exhaust fan is connected to the top of the main fuel tank.
4. the safe voltage-stabilizing system according to claim 1 for preventing the starting failure of steam-turbine lubrication oil pump pneumatosis, feature
It is, the second hand-operated valve is also installed on the flowline.
5. the safe voltage-stabilizing system according to claim 1 for preventing the starting failure of steam-turbine lubrication oil pump pneumatosis, feature
It is, further includes accumulator, the accumulator is connected to by fuel feed pump with the main oil pipe.
6. the safe voltage-stabilizing system according to claim 5 for preventing the starting failure of steam-turbine lubrication oil pump pneumatosis, feature
It is, third hand-operated valve is installed on the fuel feed pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821734101.1U CN208966380U (en) | 2018-10-24 | 2018-10-24 | Prevent the safe voltage-stabilizing system of steam-turbine lubrication oil pump pneumatosis starting failure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821734101.1U CN208966380U (en) | 2018-10-24 | 2018-10-24 | Prevent the safe voltage-stabilizing system of steam-turbine lubrication oil pump pneumatosis starting failure |
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| Publication Number | Publication Date |
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| CN208966380U true CN208966380U (en) | 2019-06-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201821734101.1U Active CN208966380U (en) | 2018-10-24 | 2018-10-24 | Prevent the safe voltage-stabilizing system of steam-turbine lubrication oil pump pneumatosis starting failure |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112066261A (en) * | 2020-07-30 | 2020-12-11 | 中广核核电运营有限公司 | Oil supplementing device of oil regulating system |
| CN113153460A (en) * | 2021-01-26 | 2021-07-23 | 东方电气集团东方汽轮机有限公司 | High-level oil tank system for turbine lubricating oil |
-
2018
- 2018-10-24 CN CN201821734101.1U patent/CN208966380U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112066261A (en) * | 2020-07-30 | 2020-12-11 | 中广核核电运营有限公司 | Oil supplementing device of oil regulating system |
| CN113153460A (en) * | 2021-01-26 | 2021-07-23 | 东方电气集团东方汽轮机有限公司 | High-level oil tank system for turbine lubricating oil |
| CN113153460B (en) * | 2021-01-26 | 2022-03-25 | 东方电气集团东方汽轮机有限公司 | High-level oil tank system for turbine lubricating oil |
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