CN206054012U - A kind of thermal power plant's Turbo-generator Set lubricating oil system - Google Patents
A kind of thermal power plant's Turbo-generator Set lubricating oil system Download PDFInfo
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- CN206054012U CN206054012U CN201621093596.5U CN201621093596U CN206054012U CN 206054012 U CN206054012 U CN 206054012U CN 201621093596 U CN201621093596 U CN 201621093596U CN 206054012 U CN206054012 U CN 206054012U
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- 239000010687 lubricating oil Substances 0.000 title claims abstract description 157
- 239000003921 oil Substances 0.000 claims abstract description 280
- 239000000779 smoke Substances 0.000 claims abstract description 72
- 230000001050 lubricating effect Effects 0.000 claims abstract description 31
- 238000007789 sealing Methods 0.000 claims description 10
- 238000001816 cooling Methods 0.000 claims description 8
- 238000005461 lubrication Methods 0.000 claims description 5
- 238000012790 confirmation Methods 0.000 claims description 4
- 238000001914 filtration Methods 0.000 claims description 3
- 239000000446 fuel Substances 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 claims 1
- 239000004519 grease Substances 0.000 description 26
- 238000000034 method Methods 0.000 description 13
- 230000009970 fire resistant effect Effects 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000000284 resting effect Effects 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 235000019504 cigarettes Nutrition 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 239000002828 fuel tank Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
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Abstract
This utility model provides a kind of thermal power plant's Turbo-generator Set lubricating oil system, and the system includes：Grease-box, first and second AC Lub oil pump, DC lubricating, oil return filter screen, first and second jacking(oil) pump, first and second jacking(oil) pump inlet screen, first and second jacking(oil) pump outlet filter screen, multiple choke valves, engagement solenoid, electric heater, electric barring, first and second lube oil cooler, first and second smoke exhaust fan.The lubricating oil of convenient pressure and temperature can be provided to steam-electric generating set shafting using this utility model, bearing shell is lubricated and is cooled down；Two is to provide high pressure jacking oil to the whole shafting of Turbo-generator Set, by overall shafting jack-up certain altitude, reduces resistance and forms oil film, facilitates the operation of Turbo-generator Set jiggering and prevent mill watt under the Turbo-generator Set slow-speed of revolution；Three is to start electric barring equipment, and engagement Turbo-generator Set is driven which and rotated with the slow-speed of revolution, prevents the excessive generation cambered axle accident of upper and lower temperature difference of the cylinder.
Description
Technical field
This utility model is related to thermal power plant's steam turbine generator technical field, more particularly to a kind of thermal power plant's Turbo-generator Set
Lubricating oil system.
Background technology
The major function of thermal power plant's Turbo-generator Set lubricating oil system is to provide lubricating oil to the whole shafting of generating set,
But existing thermal power plant's Turbo-generator Set lubricating oil system is under full cut-off state at present, it is impossible to realize that Turbo-generator Set is moistened
The automatic of oil system；Also Turbo-generator Set cannot be realized under Turbo-generator Set lubricating oil system running status
Lubricating oil system is automatically stopped；Also, when the startup program of Turbo-generator Set lubricating oil system is carried out to a certain step, if
The step sequence condition is unsatisfactory for, it is impossible to proceed startup program.Also, existing Turbo-generator Set lubricating oil system of thermal power plant
System cannot provide the lubricating oil of convenient pressure and temperature from the whole shafting of trend Turbo-generator Set.
Utility model content
To solve above-mentioned technical problem, this utility model provides a kind of thermal power plant's Turbo-generator Set lubricating oil system,
Thermal power plant's Turbo-generator Set lubricating oil system includes：Grease-box, the first AC Lub oil pump, the second exchange lubricating oil
Pump, DC lubricating, lubricating oil return filter screen, the first jacking(oil) pump, the second jacking(oil) pump, the filter of the first jacking(oil) pump entrance
Net, the second jacking(oil) pump inlet screen, the first jacking(oil) pump outlet filter screen, the second jacking(oil) pump outlet filter screen, multiple choke valves,
Jiggering engagement solenoid, electric lubricating oil heater, electric barring, the first lube oil cooler, the second lube oil cooler, first
Smoke exhaust fan and the second smoke exhaust fan；
The lubricating oil return filter screen is arranged on the oil returning tube between Turbo-generator Set and the grease-box；Institute
State the first AC Lub oil pump, the second AC Lub oil pump and DC lubricating to be arranged in the grease-box, for inciting somebody to action
Lubricating oil in the grease-box is pumped out；The electric lubricating oil heater is used to heat the lubricating oil in grease-box；It is described
First AC Lub oil pump, the second AC Lub oil pump, DC lubricating are moistened by pipeline and described first after being connected in parallel
Oil cooler connects；In the outlet point of first AC Lub oil pump, the second AC Lub oil pump and DC lubricating
Outlet non-return door is not provided with；
On the one hand lube oil cooler outlet main pipe is connected with each bearing shell of steam-electric generating set shafting by pipeline, separately
On the one hand, also it is sequentially provided with the pipeline that main pipe to each support watt of steam-electric generating set shafting is exported in lube oil cooler described
First jacking(oil) pump inlet screen, the first jacking(oil) pump, the first jacking(oil) pump outlet filter screen and choke valve；The choke valve difference
It is arranged on high pressure cylinder both sides in Turbo-generator Set, intermediate pressure cylinder both sides, low pressure (LP) cylinder both sides and electromotor both sides；
The electric barring is connected with the jiggering engagement solenoid, and the electric barring is arranged on Turbo-generator Set
In connecting shaft between rotor and low pressure (LP) cylinder；
Second lube oil cooler is in parallel with first lube oil cooler, in first lube oil cooler
And second lube oil cooler be respectively arranged at two ends with entrance electrically operated gate and outlet electrically operated gate；The second jacking(oil) pump entrance filter
Net is connected in parallel with the first jacking(oil) pump inlet screen, in the first jacking(oil) pump inlet screen and the second jacking(oil) pump
Inlet screen be respectively arranged at two ends with entrance electrically operated gate and outlet electrically operated gate；Second jacking(oil) pump and first jacking oil
Parallel connection of pumps connects, being respectively arranged at two ends with entrance electrically operated gate and export electronic in first jacking(oil) pump and the second jacking(oil) pump
Door；The first jacking(oil) pump outlet filter screen is arranged on the outfan of first jacking(oil) pump, and second jacking oil is pumped out
Mouth filter screen is arranged on the outfan of second jacking(oil) pump；
First smoke exhaust fan and the second smoke exhaust fan are arranged on the top of the grease-box, in the described first smoke evacuation
The entrance of blower fan and the second smoke exhaust fan is respectively equipped with entrance electrically operated gate, in first smoke exhaust fan and the second smoke exhaust fan
Outlet is respectively equipped with outlet non-return door.
In one embodiment, the lubricating oil in the grease-box is through first AC Lub oil pump and/or second
AC Lub oil pump and/or DC lubricating by after the lubricating oil adherence pressure in the grease-box, a part of lubricating oil
Through the first lube oil cooler and/or the second lube oil cooler cooling after be fed directly to steam-electric generating set shafting each
Bearing shell, another part lubricating oil sequentially pass through institute after the first lube oil cooler and/or the cooling of the second lube oil cooler
State the first jacking(oil) pump inlet screen and/or the second jacking(oil) pump inlet screen, the first jacking(oil) pump and the first jacking oil are pumped out
Mouth filter screen and/or the second jacking(oil) pump and the second jacking(oil) pump outlet filter screen, each choke valve deliver to steam-electric generating set shafting
Each support watt.
In one embodiment, lubricating oil return is after the lubricating oil return strainer filtering being arranged on oil returning tube
Stream enters the grease-box.
In one embodiment, the oil smoke that the rotor of Turbo-generator Set is produced with bearing shell friction is communicated to by oil returning tube
The Lubricating oil tank, is extracted out by first smoke exhaust fan and/or the second smoke exhaust fan.
In one embodiment, thermal power plant's Turbo-generator Set lubricating oil system also includes：Turbo-generator Set lubricates
Oil system programed logic operation button, grease pump block push button, smoke exhaust fan block push button, jacking(oil) pump interlocking are pressed
Button, manual confirmation sealing oil system have been turned on button and manual confirmation sealing oil system stop button.
The beneficial effects of the utility model are：Thermal power plant's Turbo-generator Set lubrication that this utility model embodiment is provided
Oil system and its on off control method can realize that steamer is sent out under thermal power plant's Turbo-generator Set lubricating oil system full cut-off state
The automatic of group of motors lubricating oil system；Under Turbo-generator Set lubricating oil system running status, steam turbine generator is realized
Organize being automatically stopped for lubricating oil system；And take into account artificial judgement, it is possible to achieve Turbo-generator Set lubricating oil system program control
The leapfrog operation of logic processed, when a certain step of programed logic service condition for meet cause to walk sequence cannot carry out when, can be with
Artificially leapfrog action can be ignored and be operated to Rule of judgment whether, continue the operation of programed logic and finish until starting.
Also, this utility model is utilized, the lubricating oil of convenient pressure and temperature can be provided to steam-electric generating set shafting, bearing shell is carried out
Lubrication and cooling；Two is to provide high pressure jacking oil to the whole shafting of Turbo-generator Set, and overall shafting jack-up certain altitude subtracts
Slight drag and formation oil film, facilitate the operation of Turbo-generator Set jiggering and prevent mill watt under the Turbo-generator Set slow-speed of revolution；Three are
Start electric barring equipment, engagement Turbo-generator Set is driven which and rotated with the slow-speed of revolution, prevent the excessive generation of upper and lower temperature difference of the cylinder curved
Axle accident.
Description of the drawings
In order to be illustrated more clearly that this utility model embodiment or technical scheme of the prior art, below will be to embodiment
Or accompanying drawing to be used is briefly described needed for description of the prior art, it should be apparent that, drawings in the following description are only
It is some embodiments of the present utility model, for those of ordinary skill in the art, in the premise for not paying creative work
Under, can be with according to these other accompanying drawings of accompanying drawings acquisition.
Structural representations of the Fig. 1 for this utility model embodiment thermal power plant Turbo-generator Set lubricating oil system；
Fig. 2A～Fig. 2 C are this utility model embodiment thermal power plant Turbo-generator Set lubricating oil system on off control method
Flow chart；
Flow processs of the Fig. 3 for this utility model embodiment thermal power plant Turbo-generator Set lubricating oil system on off control method
Figure.
Drawing reference numeral：
1. 2. second AC Lub oil pump outlet non-return door of the first AC Lub oil pump outlet non-return door
3. 4. first lube oil cooler entrance electrically operated gate of DC lubricating outlet non-return door
5. the first lube oil cooler exports 6. second lube oil cooler entrance electrically operated gate of electrically operated gate
7. the second lube oil cooler exports 8. first jacking(oil) pump inlet screen entrance electrically operated gate of electrically operated gate
9. the first jacking(oil) pump inlet screen exports 10. second jacking(oil) pump inlet screen entrance electrically operated gate of electrically operated gate
11. second jacking(oil) pump inlet screens export 12. first jacking(oil) pump entrance electrically operated gate of electrically operated gate
13. first jacking(oil) pumps export 14. second jacking(oil) pump entrance electrically operated gate of electrically operated gate
15. second jacking(oil) pumps export 16. choke valve of electrically operated gate
17. choke valve, 18. choke valve
19. 20. choke valve of choke valve
21. choke valve, 22. choke valve
23. choke valve, 24. choke valve
25. choke valve, 26. jiggering engagement solenoid
27. first AC Lub oil pump, 28. second AC Lub oil pump
29. 30. first jacking(oil) pump of DC lubricating
31. second jacking(oil) pump, 32. electric lubricating oil heater
33. second smoke exhaust fan, 34. first smoke exhaust fan
35. first smoke evacuation fans entrance electrically operated gates, 36. second smoke evacuation fans entrance electrically operated gate
37. first smoke evacuation fan outlet non-return flaps, 38. second smoke evacuation fan outlet non-return flap
39. second lube oil cooler, 40. first lube oil cooler
41. first jacking(oil) pump inlet screen, 42. second jacking(oil) pump inlet screen
43. first jacking(oil) pumps outlet filter screen 44. second jacking(oil) pump outlet filter screen
45. lubricating oil return filter screen, 46. electric barring
47. grease-boxs
Specific embodiment
Below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is carried out
Clearly and completely describe, it is clear that described embodiment is only this utility model a part of embodiment, rather than whole
Embodiment.Based on the embodiment in this utility model, those of ordinary skill in the art are not under the premise of creative work is made
The every other embodiment for being obtained, belongs to the scope of this utility model protection.
As shown in figure 1, this utility model embodiment provides a kind of thermal power plant's Turbo-generator Set lubricating oil system, this is
System is included：Grease-box 47, the first AC Lub oil pump 27, the second AC Lub oil pump 28, DC lubricating 29, lubricating oil
Oil return filter screen 45, the first jacking(oil) pump 30, the second jacking(oil) pump 31, the first jacking(oil) pump inlet screen 41, the second jacking(oil) pump
Inlet screen 42, the first jacking(oil) pump outlet filter screen 43, the second jacking(oil) pump outlet filter screen 44, jiggering engagement solenoid 26, profit
Lubricating oil electric heater 32, electric barring 46, the first lube oil cooler 40, the second lube oil cooler 39, the first smoke exhaust fan
34th, the second smoke exhaust fan 33 and multiple choke valves (as shown in label 16 to label 25).
Lubricating oil return filter screen 45 is arranged on the shafting of Turbo-generator Set to the oil returning tube between grease-box 47,
First AC Lub oil pump 27, the second AC Lub oil pump 28 and DC lubricating 29 are arranged on the inside of grease-box 47,
For the lubricating oil in grease-box 47 is pumped out.Electric lubricating oil heater 32 is used to heat the lubricating oil in grease-box 47.
First AC Lub oil pump 27, the second AC Lub oil pump 28, DC lubricating 29 pass through pipeline and first after being connected in parallel
Lube oil cooler 40 connects.In the first AC Lub oil pump 27, the second AC Lub oil pump 28 and DC lubricating 29
Outlet is respectively equipped with outlet non-return door 1, outlet non-return door 2 and outlet non-return door 3.
On the one hand lube oil cooler outlet main pipe is connected with each bearing shell of steam-electric generating set shafting by pipeline, separately
On the one hand, main pipe is exported in lube oil cooler be also sequentially provided with first to the steam-electric generating set shafting respectively pipeline of support watt
Jacking(oil) pump inlet screen 41, the first jacking(oil) pump 30, the first jacking(oil) pump outlet filter screen 43 and multiple choke valves.Multiple throttlings
The distribution of valve 16～25 is arranged on the high pressure cylinder both sides in Turbo-generator Set, intermediate pressure cylinder both sides, low pressure (LP) cylinder both sides and electromotor two
Side.
Electric barring 46 is connected with jiggering engagement solenoid 26, electric barring 46 be arranged on the rotor of Turbo-generator Set with
In connecting shaft between low pressure (LP) cylinder.
Second lube oil cooler 39 is in parallel with the first lube oil cooler 40, at the two ends of the first lube oil cooler 40
Entrance electrically operated gate 4 and outlet electrically operated gate 5 are respectively equipped with, entrance electrically operated gate is respectively arranged at two ends with the second lube oil cooler 39
6 and outlet electrically operated gate 7.Second jacking(oil) pump inlet screen 42 is connected in parallel with the first jacking(oil) pump inlet screen 41, first
Jacking(oil) pump inlet screen 41 is respectively arranged at two ends with entrance electrically operated gate 8 and outlet electrically operated gate 9, filters in the second jacking(oil) pump entrance
Net 42 is respectively arranged at two ends with entrance electrically operated gate 10 and outlet electrically operated gate 11.Second jacking(oil) pump 31 and first jacking(oil) pump
30 are connected in parallel, the first jacking(oil) pump 30 be respectively arranged at two ends with entrance electrically operated gate 12 and outlet electrically operated gate 13, second top
Shafting oil pump 31 be respectively arranged at two ends with entrance electrically operated gate 14 and outlet electrically operated gate 15.First jacking(oil) pump outlet filter screen 43 is arranged on
The outfan of the first jacking(oil) pump 30, the second jacking(oil) pump outlet filter screen 44 are arranged on the outfan of the second jacking(oil) pump 31.
First smoke exhaust fan 34 and the second smoke exhaust fan 33 are arranged on the top of grease-box 47, and the two generally sets side by side
Put.Entrance electrically operated gate 35 and entrance electrically operated gate 36 are respectively equipped with the entrance of the first smoke exhaust fan 34 and the second smoke exhaust fan 33,
Outlet non-return door 37 and outlet non-return door 38 are respectively equipped with the outlet for stating the first smoke exhaust fan 34 and the second smoke exhaust fan 33.
As shown in figure 1, being additionally provided with other in this utility model embodiment thermal power plant Turbo-generator Set lubricating oil system
Necessary pipeline, valve and related thermal technology's measuring point etc..
Thermal power plant's Turbo-generator Set lubricating oil system that this utility model embodiment is provided has three zones：One is to vapour
The whole shafting of turbine generator group provides (including support watt and thrust bearing shoe valve) lubricating oil of convenient pressure and temperature, and lubricating oil is to bearing shell
Play a part of to lubricate and cool down；Two is to provide high pressure jacking oil to the whole shafting of Turbo-generator Set, by overall shafting jack-up
Certain altitude, reduces resistance and forms oil film, facilitates the operation of Turbo-generator Set jiggering and prevents the Turbo-generator Set slow-speed of revolution
Lower mill watt；Three is to start electric barring equipment, and engagement Turbo-generator Set is driven which and rotated with the slow-speed of revolution, prevents upper and lower cylinder temperature
The excessive generation cambered axle accident of difference.Oil tank of the grease-box 47 as lubricating oil system, for recovery system high heat oil return
System cooling oil sources is also provided to simultaneously.When system is normally run, AC Lub oil pump 27 or 28 is lifted in grease-box 47
The pressure of lubricating oil, after lube oil cooler 39 or 40 is cooled to suitable temperature, delivers to the whole shafting of Turbo-generator Set
Each bearing shell.Standby oil sources of the DC lubricating 29 as AC Lub oil pump, can be in AC Lub oil pump accident shape
Under state, lubricating oil is conveyed to shafting.Outside lubricating oil fuel feeding removing shafting directly lubricates, some is pumped into through jacking oil
Mouth filter screen, is promoted to high pressure by jacking(oil) pump 30 or 31, then Jing after jacking(oil) pump outlet strainer filtering impurity, throttling that Jing is adjustable
Each support watt is delivered to after valve reducing pressure by regulating flow, by shafting jack-up certain altitude.Electric barring is in lubricating oil, jacking oil and Seal Oil
Start after normal operation, by Motor drive, engage Turbo-generator Set rotating shaft, drive which and run without interruption with the slow-speed of revolution, prevent
Permanent bending of rotor and elimination stress.When Turbo-generator Set is normally run, friction generates heat forms oil smoke for rotor and bearing shell, leads to
Cross oil return pipe and be communicated to grease-box 47, extracted out by smoke exhaust fan.Electric heater 32 is set in grease-box 47, in cryogenic conditions
Under can heat in grease-box 47 oil temperature to desired operating temperatures, on condition that first start AC Lub oil pump lubricating oil is followed
Ring, prevents lubricating oil hot-spot under resting state.
In one embodiment, the lubricating oil in grease-box 47 is through the first AC Lub oil pump 27 (or the second exchange profit
Oil pump 28, or DC lubricating 29) by the lubricating oil adherence pressure in grease-box 47 after, a part of lubricating oil is through
Each axle of steam-electric generating set shafting is fed directly to after the cooling of one lube oil cooler 40 (or second lube oil cooler 39)
Watt, another part lubricating oil is sequentially passed through after the cooling of the first lube oil cooler 40 (or second lube oil cooler 39)
First jacking(oil) pump inlet screen 41 (or second jacking(oil) pump inlet screen 42), the first jacking(oil) pump 30 and the first jacking(oil) pump
Outlet filter screen 43 (or the second jacking(oil) pump 31 and the second jacking(oil) pump outlet filter screen 44), each choke valve (16～section of choke valve
25) stream valve delivers to each support watt of steam-electric generating set shafting.First AC Lub oil pump 27 and the second AC Lub oil pump
28 is generally standby each other, but under certain condition, can come into operation simultaneously, and DC lubricating 29 is generally in grease pump
Outlet main-piping pressure comes into operation when being less than warning value.In the same manner, the first lube oil cooler 40 and the second lube oil cooler 39
Can be standby each other, it is also possible to while coming into operation；First jacking(oil) pump inlet screen 41 and the second jacking(oil) pump inlet screen
42 can be standby each other, it is also possible to while coming into operation；First jacking(oil) pump 30 can also be standby each other with the second jacking(oil) pump 31
With, it is also possible to while coming into operation.
Usually, the lubricating oil return of steam-electric generating set shafting is filtered by the lubricating oil return being arranged on oil returning tube
After net 45 is filtered, stream enters grease-box 47.The rotor of Turbo-generator Set rubs the oil smoke for producing also by oil returning tube with bearing shell
Lubricating oil tank 47 is communicated to, is extracted out by the first smoke exhaust fan 34 (or second smoke exhaust fan 33).
Above-mentioned thermal power plant's Turbo-generator Set lubricating oil system also includes：Turbo-generator Set lubricating oil system program control
Logical operation button A1 processed, grease pump block push button A2, smoke exhaust fan block push button A3, jacking(oil) pump block push button A4, people
Work confirms that sealing oil system has been turned on button A5 manual confirmations sealing oil system stop button A6.
Using grease pump block push button A2, can automatically by the first AC Lub oil pump 27, the second AC Lub oil pump
28 and 29 used device of DC lubricating interlocking, when interlocking input after, if the first AC Lub oil pump 27 trips or failure,
Second AC Lub oil pump 28 can interlocked startup rapidly, maintain the normal operation of system.If AC Lub oil pump trip or
Failure, or grease pump outlet main-piping pressure less than warning value, then DC lubricating 29 is rapid starts, it is ensured that turbine generator
The supply of lubricating oil needed for shaft system of unit.
Using smoke exhaust fan block push button A3, automatically the first smoke exhaust fan 34 can be set with the input of the second smoke exhaust fan 33
Standby interlocking.After interlocking input, if wherein one unit trip or failure, another equipment can start rapidly, maintain system
The normal operation of system.In the same manner, can automatically by the first jacking(oil) pump 30 and the second jacking oil using jacking(oil) pump block push button A4
31 used device of pump is interlocked, and when wherein one equipment fault or tripping operation, another equipment can start rapidly.
On off control sides of Fig. 2A～Fig. 2 C for this utility model embodiment thermal power plant Turbo-generator Set lubricating oil system
The starting step flow chart of method, as shown in Fig. 2A～Fig. 2 C, the starting step includes：
Step S101, judge whether the 1. entrance electrically operated gate 4 of the first lube oil cooler 40 and outlet electrically operated gate 5, second
The entrance electrically operated gate 6 and outlet electrically operated gate 7 of lube oil cooler 39 is opened, 2. and the first jacking(oil) pump inlet screen 41 entrance
Electrically operated gate 8 and outlet electrically operated gate 9, the entrance electrically operated gate 10 of the second jacking(oil) pump inlet screen 42 and outlet electrically operated gate 11 are opened,
3. and the first jacking(oil) pump 30 entrance electrically operated gate 12 and outlet electrically operated gate 13,14 and of entrance electrically operated gate of the second jacking(oil) pump 31
Outlet electrically operated gate 15 is opened；4. and the entrance electrically operated gate 35 of the first smoke exhaust fan 34 and the second smoke exhaust fan 33 entrance electrically operated gate
36 close.If having any one condition to be unsatisfactory in above-mentioned 4 conditions, or there are multiple conditions to be unsatisfactory for, then carry out step
S102, sends the entrance electrically operated gate 4 and outlet electrically operated gate 5, the second lube oil cooler 41 for opening the first lube oil cooler 40
Entrance electrically operated gate 6 and outlet electrically operated gate 7 instruction, and 8 He of entrance electrically operated gate for opening the first jacking(oil) pump inlet screen 41
The instruction of outlet electrically operated gate 9, the entrance electrically operated gate 10 of the second jacking(oil) pump inlet screen 42 and outlet electrically operated gate 11, and open the
The entrance electrically operated gate 12 of one jacking(oil) pump 30 and outlet electrically operated gate 13, the entrance electrically operated gate 14 of the second jacking(oil) pump 31 and outlet are electric
The instruction of dynamic door 15；And close the entrance electrically operated gate 36 of the entrance electrically operated gate 35 and the second smoke exhaust fan 33 of the first smoke exhaust fan 34
Instruction.If the electrically operated gate of the unlatching is originally opened in step S101, receive during step S102 can be ignored
Open command；What if the electrically operated gate that should be closed in step S101 had originally been closed, could ignore in step S102
The out code for receiving, similarly hereinafter.If above-mentioned 4 conditions all meet, step S103 is carried out.
Step S103, judge whether the first AC Lub oil pump 27 has been turned on.If the first AC Lub oil pump 27 is not opened
It is dynamic, send the instruction (step S104) for starting the first AC Lub oil pump 27.If the first AC Lub oil pump 27 has been turned on, enter
Row step S105.
Whether step S105, the oil temperature judged in grease-box 47 are more than the first preset temperature.If in grease-box 47
Oil temperature be less than the first preset temperature, send start electric lubricating oil heater instruction (step S106).If grease-box 47
Interior oil temperature is more than above-mentioned preset temperature, carries out step S107.
Normally, above-mentioned first preset temperature takes 20 DEG C.
Step S107, judge the pressure of grease pump outlet main pipe whether more than the first preset pressure value.If lubricating oil
The pressure of pump discharge main pipe is more than the first preset pressure value, carries out step S108.
In one embodiment, the first preset pressure value is 0.12MPa.
Step S108, judge whether to put into grease pump interlocking, and electric lubricating oil heater 32 is quit work.If
Grease pump interlocking does not put into or electric lubricating oil heater 32 does not quit work, or grease pump interlocking does not put into and lubricating oil
Electric heater 32 does not quit work, then send instruction and the electric lubricating oil heater out of service 32 of input grease pump interlocking
Instruction (step S109).If having put into grease pump interlocking and electric lubricating oil heater 32 being quit work, step is carried out
S110。
2. and the second AC Lub oil pump step S110, judge whether that 1. the first AC Lub oil pump 27 is out of service,
28 and DC lubricating 29 have been turned on, 3. and grease pump outlet main-piping pressure be more than the second preset pressure value.If above-mentioned 3
There is any one condition to be unsatisfactory in individual condition, or two conditions are unsatisfactory for, or even three conditions are all unsatisfactory for, then send and stop
The instruction (step S111) of the first AC Lub oil pump 27 is run only.If the first AC Lub oil pump 27 is out of service, and
Second AC Lub oil pump 28 and DC lubricating 29 have been turned on, and grease pump outlet main-piping pressure is pre- more than above-mentioned second
If pressure value, step S112 is carried out.
In one embodiment, the second preset pressure value 0.2MPa.
Step S112, judge whether that the second AC Lub oil pump 28 is out of service, and grease pump outlet main-piping pressure
More than the 3rd preset pressure value.If the second AC Lub oil pump 28 is not out of service, and/or grease pump outlet main-piping pressure
Less than above-mentioned 3rd preset pressure value, then the instruction (step S113) of the second AC Lub oil pump out of service 28 is sent.If
Second AC Lub oil pump 28 is out of service and grease pump outlet main-piping pressure is more than the 3rd preset pressure value, carries out step
S114。
In one embodiment, the 3rd preset pressure value is 0.1MPa.
Step S114, judge whether DC lubricating 29 is out of service.If DC lubricating 29 does not stop fortune
OK, send the instruction (step S115) of DC lubricating out of service 29.If DC lubricating 29 is out of service, enter
Row step S116.
Step S116, judge whether the first AC Lub oil pump 27 has been turned on.If the first AC Lub oil pump 27 is not opened
It is dynamic, send the instruction (step S117) for starting the first AC Lub oil pump 27.If the first AC Lub oil pump 27 has been turned on, enter
Row step S118.
Step S118, judge that grease pump outlet main-piping pressure whether more than the first preset pressure value, that is, judges whether big
In 0.12MPa.If grease pump outlet main-piping pressure is more than 0.12MPa, step S119 is carried out.
Step S119, judge whether to put into grease pump interlocking.If not putting into grease pump interlocking, input profit is sent
The instruction (step S120) of oil pump interlocking.If having put into grease pump interlocking, step S121 is carried out.
The entrance electricity of step S121, the entrance electrically operated gate 35 for judging whether the first smoke exhaust fan 34 and the second smoke exhaust fan 33
Dynamic door 36 is turned off.If the entrance electrically operated gate 36 of the entrance electrically operated gate 35 of the first smoke exhaust fan 34 and the second smoke exhaust fan 33
There is one to be not turned off, or two entrances electrically operated gate is all not turned off, then send the first smoke evacuation fans entrance of closing electrically operated gate 35
And second smoke evacuation fans entrance electrically operated gate 36 instruction (step S122).If the entrance electrically operated gate 35 of the first smoke exhaust fan 34 and
The entrance electrically operated gate 36 of the second smoke exhaust fan 33 is turned off, and carries out step S123.
Step S123, judge whether the first smoke exhaust fan 34 has been turned on.If the first smoke exhaust fan 34 is not actuated, sends and open
The instruction (step S124) of dynamic first smoke exhaust fan 34.If the first smoke exhaust fan 34 has been turned on, step S125 is carried out.
Step S125, judge whether the first smoke evacuation fans entrance electrically operated gate 35 has turned on.If the first smoke evacuation fans entrance
Electrically operated gate 35 is not opened, and sends the instruction (step S126) for opening the first smoke evacuation fans entrance electrically operated gate 35.If the first smoke evacuation
Fans entrance electrically operated gate 35 has turned on, and carries out step S127.
Step S127, judge whether to put into smoke exhaust fan interlocking.If not putting into smoke exhaust fan interlocking, input row is sent
The instruction (step S128) of cigarette interlock of fan.If having put into smoke exhaust fan interlocking, step S129 is carried out.
Step S129, judge that jacking(oil) pump entrance main-piping pressure whether more than the 3rd preset pressure value, that is, judges jacking oil
Whether pump intake main-piping pressure is more than 0.1MPa.If jacking(oil) pump entrance main-piping pressure is more than 0.1MPa, step 130 is carried out.
Step S130, judge whether the first jacking(oil) pump 30 has been turned on.If the 30 not actuated operation of the first jacking(oil) pump, send out
Go out to start the instruction (step S131) of the first jacking(oil) pump 30.If the first jacking(oil) pump 30 has been turned on operation, step is carried out
S132。
Step S132, judge whether jacking(oil) pump outlet main-piping pressure more than the 4th preset pressure value, and be arranged at high pressure
Cylinder both sides, intermediate pressure cylinder both sides, low pressure (LP) cylinder both sides, the pressure after the choke valve of electromotor both sides are all higher than the 5th preset pressure value.
If shafting oil pump discharge main-piping pressure is more than the 4th preset pressure value, and is arranged at high pressure cylinder both sides, intermediate pressure cylinder both sides, low pressure (LP) cylinder
Pressure behind both sides, the choke valve of electromotor both sides is all higher than the 5th preset pressure value, carries out step S133.
In one embodiment, the 4th above-mentioned preset pressure value generally takes 7MPa, and the 5th preset pressure value generally takes
3.5MPa。
Step S133, judge whether to put into jacking(oil) pump interlocking.If not putting into jacking(oil) pump interlocking, input top is sent
The instruction (step S134) of shafting oil pump interlocking.If having put into jacking(oil) pump interlocking, step S135 is carried out.
Step S135, judge whether generator sealing oil system has been turned on.If generator sealing oil system has been turned on, enter
Row step S136.
Step S136, judge whether electric barring 46 has been turned on and time delay reaches predetermined time delay.If electric barring 46 is not
Although starting or which having been turned on but not up to above-mentioned predetermined time delay, then instruction (the step for starting electric barring 46 is sent
S137).If electric barring 46 has been turned on and time delay reaches predetermined time delay, step S138 is carried out.
In one embodiment, above-mentioned default time delay generally takes 3s.
Step S138, judge whether jiggering engagement solenoid 26 is powered.If jiggering engagement solenoid 26 is not powered, send out
Go out the instruction (step S139) being powered to jiggering engagement solenoid 26.If jiggering engagement solenoid 26 is powered, step is carried out
S140。
Step S140, judge whether to receive engagement signal and reach predetermined time delay.If not receiving engagement signal or receiving
Predetermined time delay is not up to after engagement signal, is then emitted to the instruction (step S141) of 26 power-off of jiggering engagement solenoid.If
Receive engagement signal and reach predetermined time delay, carry out step S142.Predetermined time delay herein generally also takes 3s.
Step S142, judge the rotating speed of Turbo-generator Set whether more than desired speed.Normally, work as Turbo-generator Set
Rotating speed when reaching 2rpm (i.e. 2 revs/min), illustrate that lubricating oil system starts and complete.
The purpose of step S103～step S106 is that the oil temperature in grease-box 47 is promoted to more than 20 DEG C first, and is put into
The premise of electric lubricating oil heater 32 is first to start AC Lub oil pump, prevents the lubricating oil in fuel tank in resting state local mistake
Heat.The purpose one of step S107～step S115 is whether test grease pump interlocking is normal, but checking AC and DC lubricating oil
Whether the process of pump is normal.Step S116～step S128 is, for starting grease pump and smoke evacuation diversity, and to put into corresponding
Interlocking.The purpose of step S129～step S134 is to start jacking(oil) pump and put into corresponding interlocking.Step S135～step
The purpose of S142 is to start Turbo-generator Set volume electric barring, and confirms whether rotating speed is normal.
In one embodiment, the permissive condition of startup step sequence is：In grease-box 47, the oil level of lubricating oil is higher than default oil
Position.Common, above-mentioned default oil level is 2000mm, i.e. before step S101 is carried out, need to prejudge in grease-box 47
Oil level be higher than whether 2000mm, startup is just allowed when higher than 2000mm.
Stopping steps of the Fig. 3 for the on off control method of this utility model embodiment thermal power plant steam turbine generator lubricating oil system
Rapid flow chart, as shown in figure 3, the stopping step including：
Step S201, judge whether electric barring 46 stops.If electric barring 46 does not stop, the electronic disk of stopping is sent
The instruction (step S202) of car 46.If electric barring 46 stops, step S203 is carried out.
Step S203, judge whether to have dropped out jacking(oil) pump interlocking.If jacking(oil) pump interlocking is not exited, send and exit top
The instruction (step S204) of shafting oil pump interlocking.If jacking(oil) pump interlocking has dropped out, step S205 is carried out.
Step S205, judge whether that the first jacking(oil) pump 30 and the second jacking(oil) pump 31 are out of service.If first
Have in jacking(oil) pump 30 and the second jacking(oil) pump 31 one it is not out of service, or the two is out of service, then send stopping fortune
The instruction (step S206) of row the first jacking(oil) pump 30 and the second jacking(oil) pump 31.If the first jacking(oil) pump 30 and the second apical axis
Oil pump 31 is out of service, carries out step S207.
Step S207, judge whether to have dropped out grease pump interlocking.If grease pump interlocking is not exited, send and exit profit
The instruction (step S208) of oil pump interlocking.If grease pump interlocking has dropped out, step S209 is carried out.
Step S209, judge whether the first AC Lub oil pump 27, the second AC Lub oil pump 28 and DC lubricating
29 is out of service.If had in the first AC Lub oil pump 27, the second AC Lub oil pump 28 and DC lubricating 29
Any one oil pump is not out of service, or any two oil pump is not out of service, or three oil pumps are then sent all in operation
The instruction of the first AC Lub oil pump 27 out of service, the second AC Lub oil pump 28 and DC lubricating 29.
In one embodiment, the permissive condition of stopping step sequence is：Generator sealing oil system in Turbo-generator Set is
It is out of service, and steam turbine high-pressure cylinder first order inner wall temperature is less than the second preset temperature.Normally, second preset temperature takes
120℃.That is, when generator sealing oil system is out of service, and steam turbine high-pressure cylinder first order inner wall temperature is less than 120 DEG C
When just allow stop.
On off control method shown in Fig. 2A～Fig. 2 C and Fig. 3 is this utility model embodiment moderate heat high-pressure power plant fire resistant oil
The programed logic of system.Following functions can be realized using the programed logic：In thermal power plant's high pressure fireresistant oil system
Under full cut-off state, the automatic of high pressure fireresistant oil system is realized；Under thermal power plant's high pressure fireresistant oil system running state, realize
High pressure fireresistant oil system is automatically stopped；When the startup program of thermal power plant's high pressure fireresistant oil system is run to a certain step, condition
It is unsatisfactory for, the condition can be ignored if artificially judging, the operation that leapfrog action continues startup program can be carried out manually, until
High pressure fireresistant oil system start-up is finished.
Each step of the on off control method shown in Fig. 2A～Fig. 2 C and Fig. 3, first judges whether feedback receives, if received
To then proceeding next step；If do not received, receive etc. to be feedback.When due feedback signal is not received, program control
Logic processed can rest on the step, wait artificial operation.Power plant operations staff can find the unreceived feedback of current operation step sequence
Signal, artificially judges whether unreceived feedback signal affects continuing executing with for program programed logic.If the feedback signal
Do not affect proceeding for present procedure control logic, operations staff that leapfrog action can be operated to continue holding for programed logic
OK；If the feedback signal affects proceeding for present procedure control logic, operations staff can be according to each for finding
Unsatisfied feedback signal, targetedly goes investigation problem, until receiving the feedback signal, continues executing with programme-control and patrols
Volume.
By the on off control method shown in Fig. 2A～Fig. 2 C and Fig. 3, can be in thermal power plant's Turbo-generator Set lubrication
Under oil system full cut-off state, the automatic of Turbo-generator Set lubricating oil system is realized；In thermal power plant's Turbo-generator Set profit
Under oil system running status, being automatically stopped for Turbo-generator Set lubricating oil system is realized.
Apply specific embodiment to be set forth principle of the present utility model and embodiment in this utility model, with
The explanation of upper embodiment is only intended to help and understands method of the present utility model and its core concept；Simultaneously for this area
Those skilled in the art, according to thought of the present utility model, will change in specific embodiments and applications, comprehensive
Upper described, this specification content is should not be construed as to restriction of the present utility model.
Claims (5)
1. a kind of thermal power plant's Turbo-generator Set lubricating oil system, it is characterised in that thermal power plant's Turbo-generator Set lubrication
Oil system includes：Grease-box, the first AC Lub oil pump, the second AC Lub oil pump, DC lubricating, lubricating oil return
Filter screen, the first jacking(oil) pump, the second jacking(oil) pump, the first jacking(oil) pump inlet screen, the second jacking(oil) pump inlet screen, first
Jacking(oil) pump outlet filter screen, the second jacking(oil) pump outlet filter screen, multiple choke valves, jiggering engagement solenoid, lubricating oil electrical heating
Device, electric barring, the first lube oil cooler, the second lube oil cooler, the first smoke exhaust fan and the second smoke exhaust fan；
The lubricating oil return filter screen is arranged on the oil returning tube between Turbo-generator Set and the grease-box；Described
One AC Lub oil pump, the second AC Lub oil pump and DC lubricating are arranged in the grease-box, for will be described
Lubricating oil in grease-box is pumped out；The electric lubricating oil heater is used to heat the lubricating oil in grease-box；Described first
AC Lub oil pump, the second AC Lub oil pump, DC lubricating pass through pipeline and first lubricating oil after being connected in parallel
Cooler connects；Set in the outlet of first AC Lub oil pump, the second AC Lub oil pump and DC lubricating respectively
There is outlet non-return door；
On the one hand lube oil cooler outlet main pipe is connected with each bearing shell of steam-electric generating set shafting by pipeline, the opposing party
Face, exports main pipe in lube oil cooler and is also sequentially provided with described first to the steam-electric generating set shafting respectively pipeline of support watt
Jacking(oil) pump inlet screen, the first jacking(oil) pump, the first jacking(oil) pump outlet filter screen and choke valve；The choke valve is respectively provided with
High pressure cylinder both sides, intermediate pressure cylinder both sides, low pressure (LP) cylinder both sides and electromotor both sides in Turbo-generator Set；
The electric barring is connected with the jiggering engagement solenoid, and the electric barring is arranged on the rotor of Turbo-generator Set
In connecting shaft between low pressure (LP) cylinder；
Second lube oil cooler is in parallel with first lube oil cooler, in first lube oil cooler and
Two lube oil coolers be respectively arranged at two ends with entrance electrically operated gate and outlet electrically operated gate；The second jacking(oil) pump inlet screen with
The first jacking(oil) pump inlet screen is connected in parallel, in the first jacking(oil) pump inlet screen and the second jacking(oil) pump entrance
Filter screen be respectively arranged at two ends with entrance electrically operated gate and outlet electrically operated gate；Second jacking(oil) pump is with first jacking(oil) pump simultaneously
Connection connection, is respectively arranged at two ends with entrance electrically operated gate and outlet electrically operated gate in first jacking(oil) pump and the second jacking(oil) pump；
The first jacking(oil) pump outlet filter screen is arranged on the outfan of first jacking(oil) pump, the second jacking(oil) pump outlet filter
Net is arranged on the outfan of second jacking(oil) pump；
First smoke exhaust fan and the second smoke exhaust fan are arranged on the top of the grease-box, in first smoke exhaust fan
And second the entrance of smoke exhaust fan be respectively equipped with entrance electrically operated gate, in the outlet of first smoke exhaust fan and the second smoke exhaust fan
It is respectively equipped with outlet non-return door.
2. thermal power plant's Turbo-generator Set lubricating oil system according to claim 1, it is characterised in that the grease-box
In lubricating oil through first AC Lub oil pump and/or the second AC Lub oil pump and/or DC lubricating by institute
After stating the lubricating oil adherence pressure in grease-box, a part of lubricating oil is through the first lube oil cooler and/or the second lubrication
Each bearing shell of steam-electric generating set shafting is fed directly to after oil cooler cooling, another part lubricating oil is through the first lubricating oil
After cooler and/or the cooling of the second lube oil cooler, the first jacking(oil) pump inlet screen and/or the second top are sequentially passed through
Shafting oil pump intake filter screen, the first jacking(oil) pump and the first jacking(oil) pump outlet filter screen and/or the second jacking(oil) pump and the second apical axis
Fuel pump outlet filter screen, each choke valve deliver to each support watt of steam-electric generating set shafting.
3. thermal power plant's Turbo-generator Set lubricating oil system according to claim 1, it is characterised in that lubricating oil return leads to
After crossing the lubricating oil return strainer filtering being arranged on oil returning tube, stream enters the grease-box.
4. thermal power plant's Turbo-generator Set lubricating oil system according to claim 1, it is characterised in that Turbo-generator Set
The rotor and bearing shell oil smoke for producing that rubs the Lubricating oil tank is communicated to by oil returning tube, by first smoke exhaust fan
And/or second smoke exhaust fan extract out.
5. thermal power plant's Turbo-generator Set lubricating oil system according to claim 2, it is characterised in that thermal power plant's vapour
Turbine generator group lubricating oil system also includes：Turbo-generator Set lubricating oil system programed logic operation button, lubricating oil
Pump block push button, smoke exhaust fan block push button, jacking(oil) pump block push button, manual confirmation sealing oil system have been turned on button and people
Work confirms sealing oil system stop button.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621093596.5U CN206054012U (en) | 2016-09-29 | 2016-09-29 | A kind of thermal power plant's Turbo-generator Set lubricating oil system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201621093596.5U CN206054012U (en) | 2016-09-29 | 2016-09-29 | A kind of thermal power plant's Turbo-generator Set lubricating oil system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106246247A (en) * | 2016-09-29 | 2016-12-21 | 华北电力科学研究院有限责任公司 | A kind of thermal power plant's Turbo-generator Set lubricating oil system and on off control method thereof |
| CN111396150A (en) * | 2020-02-20 | 2020-07-10 | 华电电力科学研究院有限公司 | Method for solving problem of high temperature of bearing bush of steam turbine set in power station |
| CN113983339A (en) * | 2021-09-18 | 2022-01-28 | 中国大唐集团科学技术研究院有限公司西北电力试验研究院 | Power plant lubricating oil and jacking oil adjusting device |
-
2016
- 2016-09-29 CN CN201621093596.5U patent/CN206054012U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106246247A (en) * | 2016-09-29 | 2016-12-21 | 华北电力科学研究院有限责任公司 | A kind of thermal power plant's Turbo-generator Set lubricating oil system and on off control method thereof |
| CN111396150A (en) * | 2020-02-20 | 2020-07-10 | 华电电力科学研究院有限公司 | Method for solving problem of high temperature of bearing bush of steam turbine set in power station |
| CN111396150B (en) * | 2020-02-20 | 2023-02-17 | 华电电力科学研究院有限公司 | Method for solving problem of high temperature of bearing bush of steam turbine set in power station |
| CN113983339A (en) * | 2021-09-18 | 2022-01-28 | 中国大唐集团科学技术研究院有限公司西北电力试验研究院 | Power plant lubricating oil and jacking oil adjusting device |
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