CN203656961U - Boiler fuel oil system with voltage stabilization - Google Patents
Boiler fuel oil system with voltage stabilization Download PDFInfo
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- CN203656961U CN203656961U CN201320890371.2U CN201320890371U CN203656961U CN 203656961 U CN203656961 U CN 203656961U CN 201320890371 U CN201320890371 U CN 201320890371U CN 203656961 U CN203656961 U CN 203656961U
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- oil
- fuel
- boiler
- voltage stabilizing
- fuel oil
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- 239000000295 fuel oil Substances 0.000 title claims abstract description 79
- 230000006641 stabilisation Effects 0.000 title abstract 4
- 238000011105 stabilization Methods 0.000 title abstract 4
- 239000003921 oil Substances 0.000 claims abstract description 135
- 239000000446 fuel Substances 0.000 claims description 88
- 230000000087 stabilizing effect Effects 0.000 claims description 38
- 230000006698 induction Effects 0.000 claims description 2
- 230000007774 longterm Effects 0.000 abstract description 8
- 238000012423 maintenance Methods 0.000 abstract description 4
- 238000004134 energy conservation Methods 0.000 abstract 1
- 238000005265 energy consumption Methods 0.000 abstract 1
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 238000002485 combustion reaction Methods 0.000 description 8
- 239000000498 cooling water Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 206010033799 Paralysis Diseases 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004945 emulsification Methods 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000010977 unit operation Methods 0.000 description 1
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Abstract
The utility model provides a boiler fuel oil system with voltage stabilization, comprising a boiler, an oil tank, an oil supply mother pipe which supplies oil from the oil tank to the boiler, an oil return mother pipe which returns oil from the boiler to the oil tank, and an oil feed pump disposed on the oil supply mother pipe. The oil supply mother pipe is provided with a voltage stabilization bypass system, arranged between the oil feed pump and the boiler. The boiler fuel oil system with voltage stabilization is advantageous in that the oil feed pump is changed from long-term continuous operation into discontinuous operation, and thereby pressure in the fuel oil system can be maintained stable; the safe and stable operation of the fuel oil system can be guaranteed, and power consumption of the fuel oil system can be reduced; the service lifetime of the oil feed pump is prolonged, maintenance workload is reduced, and energy conservation and consumption reduction can be achieved.
Description
Technical field
The utility model belongs to thermal power generation boiler technical field, particularly a kind of boiler fuel oil system of voltage stabilizing.
Background technology
Heat power plant boiler oil supply system is made up of oil system before the relevant valve of the female pipe of oil tank, oil feed pump, fuel feeding, the female pipe of oil return, system and instrument and the Boiler Furnace in parallel with oil supply system etc. conventionally.Before Boiler Furnace, oil system is made up of the pipeline of being correlated with, valve, oil gun and primary instrument and annex etc.
In any unit operation situation in thermal power plant, fuel oil supply system is in continual continuous running status, could be in ignition of the boiler, boost or the pressure stability of keeping system still when smooth combustion.The method of operation of fuel oil is: the fuel oil being stored in oil tank is sent into the female pipe of fuel feeding by the continuous operation of oil feed pump.Need igniting at boiler, boost or when smooth combustion, a part of fuel oil is sent into boiler by the female pipe of fuel feeding and burnt, remainder fuel oil is got back in oil tank by the female pipe of oil return.If steam generator system does not need igniting, boosts or smooth combustion, fuel oil still constantly in oil supply system by oil tank → oil feed pump → fuel feeding female pipe → boiler → oil return mother pipe → oil tank continuous circulation.By the long-term operation continuously of oil feed pump, to guarantee that fuel system has stable charge oil pressure.
But there is following problem in this method of operation: the long-term operation continuously of (1) oil feed pump there will be bearing, bearing bush abrasion, rotor and the wearing and tearing of pump housing part, mechanical seal leakage.Once equipment operation is undesired, by affects safety production; (2) pump housing of oil feed pump or mechanical seal leakage, not only causes fuel oil waste, simultaneously contaminated environment; (3) the long-term operation of oil feed pump causes a large amount of consumption of oil supply system electric weight.Separate unit oil feed pump power 90KW, annual institute power consumption is 90 × 8640=777600Kw.h; (4) fuel oil continuous circulation in system, in the period in summer, fuel system and oil tank excess Temperature, need to consume great amount of fuel oil cooling water, the about 25m of cooling water consumption per hour
3, use every year cooling water approximately 5 months, annual unit consumes approximately 25 × 24 × 30 × 5=90000m of cooling water
3(5) fuel oil continuous circulation in system, because oily emulsification causes pollution and the waste of fuel oil.
Utility model content
Cause well damage, the power consumption of oil feed pump self large in order to overcome the continuous operation of oil feed pump in prior art, pollute the shortcoming of fuel oil etc., the utility model provides a kind of boiler fuel oil system of voltage stabilizing, change oil feed pump into intermitten service by long-term operation continuously, make the pressure in fuel system keep stable state, guarantee safely and steadily running of fuel system, and reduce the power consumption of fuel system, extend the service life of oil feed pump, reduce the workload of maintenance, reached energy-saving and cost-reducing object.
The utility model solves the technical scheme that its technical problem adopts: a kind of boiler fuel oil system of voltage stabilizing, comprise boiler, oil tank, the female pipe of fuel feeding from oil tank to boiler fuel feeding, the female pipe of oil return from boiler to oil tank oil return and be arranged on the oil feed pump on the female pipe of fuel feeding, it is characterized in that, on the female pipe of fuel feeding, be provided with voltage stabilizing bypath system, voltage stabilizing bypath system is arranged between oil feed pump and boiler, change oil feed pump into intermitten service by long-term operation continuously, guaranteed safely and steadily running of fuel system.
Voltage stabilizing bypath system comprises bypass duct, fuel oil accumulator, pressure transmitter and DCS control room, on the female pipe of fuel feeding, at least offer a bypass duct, the end of bypass duct is at least provided with a fuel oil accumulator, on every bypass duct, be also at least provided with the pressure transmitter of an induction fuel system pressure, pressure transmitter is connected with DCS control room by wire, device is simple, has reached energy-saving and cost-reducing object.
Oil feed pump is connected with DCS control room by wire, simple and convenient, and oil feed pump can immediate reaction, the security that has improved fuel system.
On bypass duct, be provided with the ball valve for isolating voltage stabilizing bypath system, ball valve is normally open, and pressure transmitter is arranged between ball valve and fuel oil accumulator.
Preferably, be provided with four fuel oil accumulators at the end of bypass duct.
Preferably, bypass duct is provided with one, and the end of bypass duct is connected with four fuel oil accumulators, is provided with ball valve and two pressure transmitters on bypass duct, two pressure transmitters are connected with DCS control room by wire respectively, have improved the stability of fuel system.
Pressure transmitter is plugged on bypass duct by pressure guiding pipe.
On the female pipe of fuel feeding, be also provided with for oil screen entrance door and prevent the non-return flap that fuel oil flows backwards, being arranged on the porch of boiler for oil screen entrance door, non-return flap is arranged on the exit of oil feed pump.
On the female pipe of fuel feeding, be also provided with according to the fuel feeding Electrically operated gate of the signal automatic shutter in DCS control room, fuel feeding Electrically operated gate is arranged between non-return flap and voltage stabilizing bypath system.
On the female pipe of oil return, be provided with oil return Electrically operated gate, oil return cooler, oil return Electrically operated gate is normal off status, is arranged on the one end near boiler, and oil return cooler is arranged between oil tank and oil return Electrically operated gate.
The beneficial effects of the utility model are, change oil feed pump into intermitten service by long-term operation continuously, make the pressure in fuel system keep stable state, guarantee safely and steadily running of fuel system, and reduce the power consumption of fuel system, extend the service life of oil feed pump, reduced the workload of maintenance, reached energy-saving and cost-reducing object.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the boiler fuel oil system of voltage stabilizing described in the utility model is specifically described.
Fig. 1 is the structural representation of boiler fuel oil system of the present utility model.
As shown in the figure, boiler 1, oil tank 2, the female pipe 3 of fuel feeding, the female pipe 4 of oil return, oil feed pump 5, non-return flap 6, for oil screen entrance door 7, bypass duct 8, fuel oil accumulator 9, pressure transmitter 10, DCS control room 11, ball valve 12, pressure guiding pipe 13, fuel feeding Electrically operated gate 14, oil return Electrically operated gate 15, oil return cooler 16, fuel flow direction →.
The specific embodiment
As shown in Figure 1, the boiler fuel oil system of voltage stabilizing described in the utility model, comprises boiler 1, oil tank 2, the female pipe 3 of fuel feeding from oil tank 2 to boiler fuel feeding, the female pipe 4 of oil return from boiler to oil tank 2 oil returns.On the female pipe 3 of fuel feeding, be provided with oil feed pump 5, for to fuel system pressurization, the fuel delivery in oil tank 2, to boiler 1, kept to the stable of fuel system internal pressure.On the female pipe 3 of fuel feeding, be provided with voltage stabilizing bypath system, voltage stabilizing bypath system is arranged between oil feed pump 5 and boiler 1, in the time that oil feed pump 5 quits work, can keep the stable of the interior charge oil pressure of fuel system.
As shown in Figure 1, voltage stabilizing bypath system comprises bypass duct 8, fuel oil accumulator 9, pressure transmitter 10 and DCS control room 11.On the female pipe 3 of fuel feeding, at least offer a bypass duct 8, be at least provided with a fuel oil accumulator 9 at the end of bypass duct 8, fuel oil accumulator 9 for keeping fuel system internal pressure stable in the time that oil feed pump 5 is out of service.On every bypass duct 8, be also at least provided with a pressure transmitter 10, pressure transmitter 10 is plugged on bypass duct 8 by pressure guiding pipe 13, for responding to the variation of fuel system pressure.Pressure transmitter 10 is connected with DCS control room 11 by wire, and DCS control room 11 receives the pressure signal that pressure transmitter 10 senses and carries out logic judgement.Oil feed pump 5 is connected with DCS control room 11 by wire, and DCS control room 11 judges whether the signal of the pressure transmitter receiving 10 to need open or close oil feed pump 5, the switching of the chain reaction control oil feed pump 5 by DCS control room 11.
On the female pipe 3 of fuel feeding, can offer many bypass ducts 8, at least be provided with a pressure transmitter 10 on every bypass duct 8, the end of many bypass ducts is all connected with fuel oil accumulator 9.Such design, has prevented that the whole fuel system causing breaks down, can not stable operation because a pressure transmitter 10 on a bypass duct 8 or bypass duct breaks down.Many bypass ducts 8 are set, can a bypass duct 8 breaks down therein time, for fuel system provides pressure, make whole fuel system keep pressure stability by other bypass duct 8.A pressure transmitter 10 is at least set on bypass duct 8, a pressure transmitter 10 breaks down therein, can not accurately receive fuel system internal pressure signal time, other pressure transmitter 10 can be proceeded work, guarantee that pressure signal constantly transfers in DCS control room, guarantee fuel system stable operation.
As shown in Figure 1, be provided with ball valve 12 on bypass duct 8, ball valve 12 is normally open, for isolating voltage stabilizing bypath system.Pressure transmitter 10 is arranged between ball valve 12 and fuel oil accumulator 9.Fuel oil accumulator 9 can be provided with multiple according to actual needs, but in the present embodiment, is provided with four fuel oil accumulators 9, composition fuel oil Accumulator arrangements.In the present embodiment, fuel oil accumulator 9 is bladder accumulator, comprises fuel oil and air bag in it, and when fuel system is in the time that the effect downforce of oil feed pump 5 raises, fuel oil is entered in fuel oil accumulator 9 and stored by bypass duct 8, and in air bag, gas is compressed; In the time that fuel system internal pressure reduces, gas expansion in air bag, fuel oil, from the interior inflow bypass duct 8 of fuel oil accumulator 9, enters in the female pipe 3 of fuel feeding, thereby keeps the stable of fuel system internal pressure.
As shown in Figure 1, in the present embodiment, bypass duct 8 is provided with one, and the end of bypass duct 8 is connected with four fuel oil accumulators 9.On bypass duct 8, be provided with a ball valve 12 and two pressure transmitters 10, two pressure transmitters 10 are connected with DCS control room 11 by wire respectively, avoid the fault due to a pressure transmitter 10, make whole fuel system in paralyzed state, guaranteed the stability of fuel system simultaneously.
As shown in Figure 1, on the female pipe 3 of fuel feeding, be also provided with for oil screen entrance door 7 and non-return flap 6.Be arranged between voltage stabilizing bypath system and boiler 1 for oil screen entrance door 7, near the porch of boiler 1.Non-return flap 6 is arranged on the exit of oil feed pump 5, prevents that the fuel oil in the female pipe 3 of fuel feeding from flowing backward in oil feed pump 5.On the female pipe 3 of fuel feeding, be also provided with fuel feeding Electrically operated gate 14, fuel feeding Electrically operated gate 14 is arranged between non-return flap 6 and voltage stabilizing bypath system, the signal automatic shutter that can send according to DCS control room 11.
As shown in Figure 1, on the female pipe 4 of oil return, be provided with oil return Electrically operated gate 15, oil return cooler 16, oil return Electrically operated gate 15 is normal off status, is arranged on the one end near boiler 1.Oil return cooler 16 is arranged between oil return Electrically operated gate 15 and oil tank 2, for cooling fuel system, prevents fuel system and oil tank 2 excess Temperatures, the accident such as blast.
Boiler 1 needs fuel system while burning be that boiler 1 is lighted a fire, and oil feed pump 5 is delivered to fuel oil in boiler 1 from oil tank 2, so that boiler 1 grease gun igniting or combustion-supporting.And oil feed pump 5 is in the process to boiler 1 delivering fuel, a part of fuel oil enters in fuel oil accumulator 9 by the bypass duct 8 of voltage stabilizing bypath system, makes a part of fuel oil of the interior storage of fuel oil accumulator 9, and in air bag, gas is compressed.Due to the continuous operation of oil feed pump 5, make fuel system internal pressure reach the required higher limit of charge oil pressure.In the time of boiler 1 completing combustion or smooth combustion, oil feed pump 5 out of service, keeps charge oil pressure by the fuel oil accumulator 9 in voltage stabilizing bypath system, makes fuel system stablize, move reliably.The pressure that pressure transmitter 10 on bypass duct 8 in voltage stabilizing bypath system is responded in fuel system changes, and the signal of pressure is delivered in DCS control room 11, and the signal that pressure transmitter 10 is transmitted in DCS control room 11 carries out logic judgement.
When boiler 1 can not smooth combustion, while needing fuel system internal pressure that fuel oil or other factors cause to reduce, gas expansion in the air bag of fuel oil accumulator 9, the fuel oil of storage flows into bypass duct 8, be delivered in the female pipe 3 of fuel feeding, keep fuel system internal pressure to reach the scope of required setting value.When pressure decreased is during to the required lower limit of charge oil pressure, pressure transmitter 10 passes the signal along in DCS control room 11, DCS control room 11 is through logic judgement, confirm in fuel system that charge oil pressure is lower than the required lower limit of charge oil pressure, send signal, control oil feed pump 5, fuel feeding Electrically operated gate 14 are opened, provide enough pressure by oil feed pump 5 for fuel system, keep the stable of fuel system internal pressure, and fuel oil accumulator 9 internal combustion oil subsidies are filled, make the interior continuation of fuel oil accumulator 9 store fuel oil, the gas in compressing gasbag.
In the time that boiler 1 smooth combustion or fuel system internal pressure reach the required higher limit of charge oil pressure, pressure transmitter 10 receives pressure signal, pass the signal along in DCS control room 11, logic judgement is carried out in DCS control room 11, confirm that in fuel system, charge oil pressure reaches the required higher limit of charge oil pressure, send signal, control oil feed pump 5, fuel feeding Electrically operated gate 14 are closed, and keep the stable of fuel system internal pressure by fuel oil accumulator 9.
The boiler fuel oil system of voltage stabilizing described in the utility model, on the female pipe 3 of fuel feeding, offer voltage stabilizing bypath system, in the time that oil feed pump 5 is out of service, keep the stable of fuel system internal pressure by the fuel oil accumulator 9 in voltage stabilizing bypath system, guarantee safely and steadily running of fuel system, change oil feed pump 5 into intermitten service by long-term operation continuously, reduced the workload of maintenance.And reduce the power consumption of fuel system, extended the service life of oil feed pump 5, reached energy-saving and cost-reducing object.
The above is only preferred embodiment of the present utility model, not the utility model is done to any pro forma restriction, although the utility model discloses as above with preferred embodiment, but not in order to limit the utility model, any technical staff who is familiar with this patent is not departing within the scope of technical solutions of the utility model, when can utilizing the technology contents of above-mentioned prompting to make a little change or being modified to the equivalent embodiment of equivalent variations, in every case be the content that does not depart from technical solutions of the utility model, any simple modification of above embodiment being done according to technical spirit of the present utility model, equivalent variations and modification, all still belong in the scope of the utility model scheme.
Claims (10)
1. the boiler fuel oil system of a voltage stabilizing, comprise boiler (1), oil tank (2), the female pipe of fuel feeding (3) from oil tank to boiler fuel feeding, the female pipe (4) of the oil return from boiler to oil tank oil return and be arranged on the oil feed pump (5) on the female pipe of fuel feeding, it is characterized in that, on the female pipe of described fuel feeding (3), be provided with voltage stabilizing bypath system, described voltage stabilizing bypath system is arranged between oil feed pump (5) and boiler (1).
2. the boiler fuel oil system of a kind of voltage stabilizing according to claim 1, it is characterized in that, described voltage stabilizing bypath system comprises bypass duct (8), fuel oil accumulator (9), pressure transmitter (10) and DCS control room (11), on the female pipe of described fuel feeding (3), at least offer a bypass duct (8), the end of described bypass duct (8) is at least provided with a fuel oil accumulator (9), on every bypass duct (8), be also at least provided with the pressure transmitter (10) of an induction fuel system pressure, described pressure transmitter (10) is connected with DCS control room (11) by wire.
3. the boiler fuel oil system of a kind of voltage stabilizing according to claim 2, is characterized in that, described oil feed pump (5) is connected with DCS control room (11) by wire.
4. the boiler fuel oil system of a kind of voltage stabilizing according to claim 2, it is characterized in that, on described bypass duct (8), be provided with the ball valve (12) for isolating voltage stabilizing bypath system, described ball valve (12) is normally open, and described pressure transmitter (10) is arranged between ball valve (12) and fuel oil accumulator (9).
5. the boiler fuel oil system of a kind of voltage stabilizing according to claim 2, is characterized in that, is provided with four fuel oil accumulators (9) at the end of bypass duct.
6. the boiler fuel oil system of a kind of voltage stabilizing according to claim 5, it is characterized in that, described bypass duct (8) is provided with one, the end of described bypass duct is connected with four fuel oil accumulators (9), on described bypass duct (8), be provided with ball valve (12) and two pressure transmitters (10), described two pressure transmitters (10) are connected with DCS control room (11) by wire respectively.
7. the boiler fuel oil system of a kind of voltage stabilizing according to claim 2, is characterized in that, described pressure transmitter (10) is plugged on bypass duct (8) by pressure guiding pipe (13).
8. the boiler fuel oil system of a kind of voltage stabilizing according to claim 1, it is characterized in that, on the female pipe of described fuel feeding (3), be also provided with for oil screen entrance door (7) and prevent the non-return flap (6) that fuel oil flows backwards, the porch that is arranged on boiler for oil screen entrance door (7), described non-return flap (6) is arranged on the exit of oil feed pump (5).
9. the boiler fuel oil system of a kind of voltage stabilizing according to claim 1, it is characterized in that, on the female pipe of described fuel feeding (3), be also provided with the fuel feeding Electrically operated gate (14) according to the signal automatic shutter in DCS control room, described fuel feeding Electrically operated gate (14) is arranged between non-return flap (6) and voltage stabilizing bypath system.
10. the boiler fuel oil system of a kind of voltage stabilizing according to claim 1, it is characterized in that, on the female pipe of described oil return (4), be provided with oil return Electrically operated gate (15), oil return cooler (16), described oil return Electrically operated gate (15) is normal off status, be arranged on the one end near boiler, described oil return cooler (16) is arranged between oil tank (2) and oil return Electrically operated gate (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320890371.2U CN203656961U (en) | 2013-12-31 | 2013-12-31 | Boiler fuel oil system with voltage stabilization |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320890371.2U CN203656961U (en) | 2013-12-31 | 2013-12-31 | Boiler fuel oil system with voltage stabilization |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203656961U true CN203656961U (en) | 2014-06-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320890371.2U Expired - Fee Related CN203656961U (en) | 2013-12-31 | 2013-12-31 | Boiler fuel oil system with voltage stabilization |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203656961U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111536547A (en) * | 2020-05-08 | 2020-08-14 | 山西大学 | Spring type self-stabilizing device for fuel oil system |
| CN111536549A (en) * | 2020-05-08 | 2020-08-14 | 山西大学 | Leather bag type self-stabilizing device for fuel oil system |
-
2013
- 2013-12-31 CN CN201320890371.2U patent/CN203656961U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111536547A (en) * | 2020-05-08 | 2020-08-14 | 山西大学 | Spring type self-stabilizing device for fuel oil system |
| CN111536549A (en) * | 2020-05-08 | 2020-08-14 | 山西大学 | Leather bag type self-stabilizing device for fuel oil system |
| CN111536547B (en) * | 2020-05-08 | 2021-05-14 | 山西大学 | Spring type self-stabilizing device for fuel 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: 20140618 Termination date: 20141231 |
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| EXPY | Termination of patent right or utility model |