CN202012905U - Boiler water supply system - Google Patents
Boiler water supply system Download PDFInfo
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- CN202012905U CN202012905U CN2010206461649U CN201020646164U CN202012905U CN 202012905 U CN202012905 U CN 202012905U CN 2010206461649 U CN2010206461649 U CN 2010206461649U CN 201020646164 U CN201020646164 U CN 201020646164U CN 202012905 U CN202012905 U CN 202012905U
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- diesel
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Abstract
The utility model relates to a boiler water supply system, which is characterized in that, a water supply pump is added to the original boiler water supply system, the newly-added water supply pump is in a paralleling connection with a set water supply system; electrical power of the newly-added water supply pump and an electric oil pump of a steam turbine in a parallel connection is supplied by commercial power or a diesel-driven generator; the commercial power is divided into two parallel paths respectively controlling the newly-added water supply pump and the electric oil pump via circuit breakers, a current transformer, and a contactor; the diesel-driven generator is divided to two parallel paths respectively controlling the newly-added water supply pump and the electric oil pump via a frequency converter and circuit breakers; two circuit breakers controlling the newly-added water supply pump are locked, and two circuit breakers controlling the electric oil pump are locked. The boiler water supply system is advantaged by, when electricity loss happens in a plant, guaranteeing continuous work of a boiler via water supply by the water supply pumps driven by the diesel-driven generator, and in a normal condition, starting a big water supply pump and a small water supply pump to reach purpose of saving electricity consumption.
Description
Technical field
The utility model relates to steam generator system, particularly about a kind of water supply system of boiler.
Background technology
Some use the instrument factory of boiler at present, generally adopt 6000V (380V) station service to ensure boiler work.In case dead electricity, boiler will stop to supply water, and can't ensure the safety of boiler.After the station service decompression, the overbottom pressure of boiler can also guarantee the steam-operating oil pump operation of steam turbine, and boiler-steam dome is also at ordinary water level, thereby guarantee the safety of boiler heating surface, just need pay attention to again to boiler feed system, make after the station service decompression, still can guarantee to boiler replenishing water, thus the safety of assurance boiler plant, and the steam turbine oil pump has enough vapour to guarantee to lubricate.In addition, how to have under the electric situation, the duty of each feed pump also is to belong to the problem that boiler feed system need be considered to reach the purpose of economize on electricity in the reasonable distribution water supply system as much as possible.
Summary of the invention
At the problems referred to above, the purpose of this utility model provides a kind of feed water system of boiler that can guarantee still can guarantee normal operation of boiler after the civil power decompression.
For achieving the above object, the utility model is taked following technical scheme: a kind of feed water system of boiler, comprise the water supply system that constitutes by electrically driven feed pump, steam feed pump and connection water pipe, it is characterized in that: other increases a newly-increased feed pump, and described newly-increased feed pump is connected side by side with described electrically driven feed pump, steam feed pump formation; The electric oil pump of the steam turbine that newly-increased feed pump and boiler are supplied with is supplied with electricity consumption by civil power or diesel-driven generator in parallel; Civil power is divided into two-way in parallel respectively by breaker, current transformer, the newly-increased feed pump of contactor control and electric oil pump; Diesel-driven generator is divided into two-way in parallel respectively by frequency converter and newly-increased feed pump of breaker control and electric oil pump; Breaker in the civil power loop of the newly-increased feed pump of control and the breaker locking each other in the diesel-driven generator loop, breaker in the civil power loop of control electric oil pump and the breaker locking each other in the diesel-driven generator loop.
Described newly-increased feed pump is imported and exported on the pipeline Pressure gauge, and pressure is shown by DCS.
Described diesel-driven generator is equipped with machine room, is connected with the feed water system of boiler, low-voltage distribution chamber and power DCS control room by corresponding mechanical, electrical, instrument facility.
Described diesel-driven generator is controlled newly-increased feed pump and electric oil pump simultaneously by a described frequency converter.
Described newly-increased feed pump and electric oil pump are only established during by the diesel-driven generator powered operation and are controlled on the spot and regulate; Establish DCS and control on the spot when moving by mains-supplied.
Control is established out, is stopped in described DCS control, opens, stops to show, electric current shows that fault shows.
The utility model is owing to take above technical scheme, it has the following advantages: 1, safety: start newly-increased small water supplying pump to boiler replenishing water by diesel-driven generator after the electricity consumption decompression, thereby guarantee the safety of boiler plant, and steam turbine there is the vapour that enough has to guarantee to lubricate.2, energy-conservation: newly-increased feed pump can be used as stand-by pump under the normal power supply situation, under special method of operation situation, carries out the adjustment of the method for operation, realizes the reasonable disposition of kinetic energy, plays energy-saving and cost-reducing effect.By small one and large one feed pump combined running, can using electricity wisely 35%.
Description of drawings
Fig. 1 is this practical feed water system of boiler structural plan;
Fig. 2 is the newly-increased feed pump of the utility model and the circuit controling drawing of electric oil pump electricity consumption in parallel.
The specific embodiment
Below in conjunction with drawings and Examples, the utility model is given detailed introduction.
As shown in Figure 1, the utility model is on the basis of original feed water system of boiler, has increased a feed pump, is designated as newly-increased feed pump 1.Newly-increased feed pump 1 is lower than existing feed pump power, and moisturizing can be provided in short-term.Newly-increased feed pump 1 is connected as follows with set water supply system: increase feed pump 1 and existing electrically driven feed pump 2, steam feed pump 3 newly for to be connected side by side, wherein newly-increased feed pump 1 import connects the female pipe 4 of high pressure water inlet, outlet is connected on the outlet of steam feed pump 3, making it to extrude jellyfish pipe 5,6 with two-supremes joins, the recirculating line of newly-increased feed pump 1 is received on the female pipe 7 of recirculation, thereby forms complete water supply system.On each feed pump import and export pipeline the Pressure gauge indication is arranged, each feed pump outlet pressure is shown by DCS.
As shown in Figure 2, for cooperating the work of newly-increased feed pump 1 under the dead electricity situation, the utility model is equipped with the problem that diesel-driven generator 8 and frequency converter 9 etc. solve the station service decompression, for newly-increased feed pump 1 work provides safeguard.Diesel-driven generator 8 is equipped with machine room, is connected with the feed water system of boiler, low-voltage distribution chamber and power DCS control room by corresponding mechanical, electrical, instrument facility.Diesel-driven generator 8 is controlled newly-increased feed pump 1 and electric oil pump 10 simultaneously by establishing frequency converter 9.Newly-increased feed pump 1 is arranged in parallel with existing electric oil pump 10, and newly-increased feed pump 1 and electric oil pump 10 control their work by the two-way circuit, and one the tunnel is city's electric control, and another road is diesel-driven generator 8 controls.Only establish when increasing feed pump 1 and electric oil pump 10 newly and control on the spot and regulate by diesel-driven generator 8 powered operations; Establish DCS and control on the spot when newly-increased feed pump 1 is moved by mains-supplied, control is established out, is stopped in DCS control, opens, stops to show, electric current shows that fault shows.
As shown in Figure 2, in the loop of city's electric control, newly-increased feed pump 1 is by circuit breaker Q F, current transformer LH, contactor KM and circuit breaker Q F3 control; In the loop of diesel-driven generator 8 controls, newly-increased feed pump 1 is by circuit breaker Q F4 control, circuit breaker Q F3 and QF4 locking each other.
In the loop of city's electric control, electric oil pump 10 is by circuit breaker Q F, current transformer LH, contactor KM and circuit breaker Q F1 control; In the loop of diesel-driven generator 8 controls, electric oil pump 10 is by circuit breaker Q F2 control, circuit breaker Q F1 and QF2 locking each other.
When the station-service mains-supplied was moved, by separately city's electric control loop control work, this moment, circuit breaker Q F2 and QF4 were off-state respectively for newly-increased feed pump 1 and electric oil pump 10.
When diesel-driven generator 8 powered operations, establish electric interlock control, i.e. cut-off breaker QF, QF1, QF3.In order to guarantee safety, circuit breaker Q F1 and QF2 locking each other, circuit breaker Q F3 and QF4 locking each other.When the newly-increased feed pump 1 of need moves, circuit breaker Q F4 closure, circuit breaker Q F2 disconnects, frequency converter 9 control feed pump work this moment; When 10 operations of need electric oil pump, circuit breaker Q F2 closure, circuit breaker Q F4 disconnects, Frequency Converter Control electric oil pump work this moment.Avoid a frequency converter to be with newly-increased feed pump 1 and electric oil pump 10 operations simultaneously.
Existing feed pump is not subjected to the control of diesel-driven generator, because the motor of existing feed pump is the 6000V high-voltage motor, and not enough the supply; And electric oil pump and electrically driven feed pump are the 380V motor, and diesel-driven generator can satisfy.
Can find out from Fig. 1,2, behind newly-increased feed pump and the diesel-driven generator, at secure context: after full factory dead electricity, diesel-driven generator work drives electrically driven feed pump, the coal-burning boiler that can ensure to chemical plant installations works on, not because of boiler water shortage causes the overheated generation water screen tube of water screen tube pipe explosion accident, guarantee not the corrosion that the water screen tube booster because of waste heat boiler causes simultaneously to the sulfuric acid acid-producing apparatus.Aspect energy-conservation: under normal operation, start small one and large one feed pump operation and just can guarantee the feedwater demand of boiler, thereby reach purpose to using electricity wisely.
Claims (10)
1. feed water system of boiler, comprise the water supply system that constitutes by electrically driven feed pump, steam feed pump and connection water pipe, it is characterized in that: other increases a newly-increased feed pump, and described newly-increased feed pump is connected side by side with described electrically driven feed pump, steam feed pump formation;
The electric oil pump of the steam turbine that described newly-increased feed pump and boiler are supplied with is supplied with electricity consumption by civil power or diesel-driven generator in parallel;
Described civil power is divided into two-way in parallel respectively by breaker, current transformer, the newly-increased feed pump of contactor control and electric oil pump;
Described diesel-driven generator is divided into two-way in parallel respectively by frequency converter and newly-increased feed pump of breaker control and electric oil pump;
Control breaker in the civil power loop of described newly-increased feed pump and the breaker locking each other in the diesel-driven generator loop, control breaker in the civil power loop of described electric oil pump and the breaker locking each other in the diesel-driven generator loop.
2. a kind of feed water system of boiler as claimed in claim 1 is characterized in that: described newly-increased feed pump is imported and exported on the pipeline Pressure gauge, and pressure is shown by DCS.
3. a kind of feed water system of boiler as claimed in claim 1 is characterized in that: described diesel-driven generator is equipped with machine room, is connected with the feed water system of boiler, low-voltage distribution chamber and power DCS control room by corresponding mechanical, electrical, instrument facility.
4. a kind of feed water system of boiler as claimed in claim 2 is characterized in that: described diesel-driven generator is equipped with machine room, is connected with the feed water system of boiler, low-voltage distribution chamber and power DCS control room by corresponding mechanical, electrical, instrument facility.
5. as claim 1 or 2 or 3 or 4 described a kind of feed water systems of boiler, it is characterized in that: described diesel-driven generator is controlled newly-increased feed pump and electric oil pump simultaneously by a described frequency converter.
6. as claim 1 or 2 or 3 or 4 described a kind of feed water systems of boiler, it is characterized in that: described newly-increased feed pump and electric oil pump are only established during by the diesel-driven generator powered operation and are controlled on the spot and regulate; Establish DCS and control on the spot when moving by mains-supplied.
7. a kind of feed water system of boiler as claimed in claim 5 is characterized in that: described newly-increased feed pump and electric oil pump are only established during by the diesel-driven generator powered operation and are controlled on the spot and regulate; Establish DCS and control on the spot when moving by mains-supplied.
8. as claim 1 or 2 or 3 or 4 described a kind of feed water systems of boiler, it is characterized in that: control is established out, is stopped in described DCS control, opens, stops to show, electric current shows that fault shows.
9. a kind of feed water system of boiler as claimed in claim 5 is characterized in that: control is established out, is stopped in described DCS control, opens, stops to show, electric current shows that fault shows.
10. a kind of feed water system of boiler as claimed in claim 6 is characterized in that: control is established out, is stopped in described DCS control, opens, stops to show, electric current shows that fault shows.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206461649U CN202012905U (en) | 2010-12-02 | 2010-12-02 | Boiler water supply system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206461649U CN202012905U (en) | 2010-12-02 | 2010-12-02 | Boiler water supply system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202012905U true CN202012905U (en) | 2011-10-19 |
Family
ID=44783522
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206461649U Expired - Lifetime CN202012905U (en) | 2010-12-02 | 2010-12-02 | Boiler water supply system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202012905U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105202515A (en) * | 2015-08-25 | 2015-12-30 | 上海外高桥发电有限责任公司 | Electric pump free 300MW unit halting method and device |
| CN105202516A (en) * | 2015-08-25 | 2015-12-30 | 上海外高桥发电有限责任公司 | Electric pump free 300MW unit starting method and device |
-
2010
- 2010-12-02 CN CN2010206461649U patent/CN202012905U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105202515A (en) * | 2015-08-25 | 2015-12-30 | 上海外高桥发电有限责任公司 | Electric pump free 300MW unit halting method and device |
| CN105202516A (en) * | 2015-08-25 | 2015-12-30 | 上海外高桥发电有限责任公司 | Electric pump free 300MW unit starting method and device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 100010 Beijing, Chaoyangmen, North Street, No. 25, No. Co-patentee after: China Blue Chemical Ltd. Patentee after: China Offshore Oil Group Co., Ltd. Co-patentee after: China BlueChemical Corporation Address before: 100010 Beijing, Chaoyangmen, North Street, No. 25, No. Co-patentee before: China Blue Chemical Ltd. Patentee before: China National Offshore Oil Corporation Co-patentee before: China BlueChemical Corporation |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20111019 |