CN203515985U - Arrangement structure of pneumatic water supply pump set - Google Patents
Arrangement structure of pneumatic water supply pump set Download PDFInfo
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- CN203515985U CN203515985U CN201320642791.9U CN201320642791U CN203515985U CN 203515985 U CN203515985 U CN 203515985U CN 201320642791 U CN201320642791 U CN 201320642791U CN 203515985 U CN203515985 U CN 203515985U
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- feed pump
- water supply
- pump
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Abstract
The utility model discloses an arrangement structure of a pneumatic water supply pump set. The pneumatic water supply pump set is arranged in a steam engine room of a power plant and comprises a water supply pump turbine, a primary water supply pump, a water supply booster pump and a speed regulation device; a zero meter layer, an interlayer and an operating layer are arranged in the steam engine room. The pneumatic water supply pump set further comprises a power generator, and the power generator and the water supply pump turbine are arranged coaxially. The primary water supply pump and the water supply pump turbine are arranged in the operating layer, and the water supply booster pump is arranged in the zero meter layer; the power generator is connected with the water supply pump turbine through the speed regulation device, and the power generator provides power for the booster pump to drive the water supply booster pump. According to the arrangement structure of the pneumatic water supply pump set, the power generated by the power generator drives the water supply booster pump which is arranged at a low position, so that the auxiliary power is saved. A deaerator is arranged at a relative low position, so that the primary civil engineering investment is saved. In addition, the operating layer can be very conveniently used for carrying out maintenance on equipment, and smooth drainage of a steam discharge pipe of the water supply pump turbine is guaranteed at the same time.
Description
Technical field
The utility model relates to steam power plant, is specifically related to the layout of the steam feed pump group in steam power plant.
Background technique
The water supply system in domestic big-and-middle-sized thermal power plant generally adopts steam feed pump group at present.Steam feed pump group is mainly comprised of feed pump turbine, main feed pump, pre feedwater pump and gear-box (or hydraulic couplers).The relative position relation of each constituent element and driving relationship, both affected the consumption of station service, also affects the layout height of oxygen-eliminating device.
Fig. 1-3rd, the layout schematic diagram of steam feed pump group in prior art.As shown in Figure 1, pre feedwater pump 4 is arranged in zero rice layer 6, by water supply preposition pump motor 3, is driven; Main feed pump 2 is arranged in running layer 8, by feed pump turbine 1, is driven; Oxygen-eliminating device 5 is arranged in deaerator bay 9, and is positioned at pre feedwater pump 4 compare Di positions, Relative Zero rice layer ground, top.Although this arrangement can reduce the layout height of oxygen-eliminating device 5, pre feedwater pump 4 need be driven by water supply preposition pump motor 3, has consumed station service.
As shown in Figure 2, pre feedwater pump 4, main feed pump 2 and feed pump turbine 1 are coaxially arranged at running layer 8, drive main feed pump 2 by feed pump turbine 1 simultaneously, and then main feed pump 2 drives pre feedwater pump 4 via gear-box 10.Due to the needs of net positive suction head, oxygen-eliminating device 5 is arranged in deaerator bay 9, and is positioned at pre feedwater pump 4 compare Gao positions, Relative Zero rice layer ground, top.Although this arrangement makes pre feedwater pump 4 not consume station service, the high-order civil engineering initial cost that has but increased power plant construction of arranging of oxygen-eliminating device 5.
As shown in Figure 3, pre feedwater pump 4, main feed pump 2 and feed pump turbine 1 are coaxially arranged drives main feed pump 2 by feed pump turbine 1 at zero rice layer 6 simultaneously, and then main feed pump 2 drives pre feedwater pump 4 via gear-box 10.Oxygen-eliminating device 5 is arranged in deaerator bay 9, and is positioned at pre feedwater pump 4 compare Di positions, Relative Zero rice layer ground, top.
Although this arrangement had both solved the problem that pre feedwater pump 4 consumes station service, can make again oxygen-eliminating device 5 low positions, but because pre feedwater pump 4, main feed pump 2 and feed pump turbine 1 are all arranged in zero rice layer 6, cannot utilize easily the large platform of running layer 8 to keep in repair.There is the problem of blocked drain in the exhaust steam pipe of feed pump turbine 1 in addition, affects the safe operation of feed pump turbine 1.The application of this arrangement in Practical Project is less than first two on the contrary.
Model utility content
The purpose of this utility model is to provide a kind of layout of indirect steam-operating pre feedwater pump.
For achieving the above object, the utility model provides a kind of layout of steam feed pump group, described steam feed pump group is arranged in the steam turbine building of power station and comprises feed pump turbine, main feed pump, pre feedwater pump and arrangements for speed regulation, described steam turbine building is provided with zero rice layer, mesosphere and running layer, it is characterized in that:
Described steam feed pump group also comprises generator and water supply preposition pump motor, and described generator and described feed pump turbine are coaxially arranged, and described water supply preposition pump motor is electrically connected to described generator, in order to drive described pre feedwater pump;
Described main feed pump and described feed pump turbine are arranged in described running layer, and described pre feedwater pump is arranged in described zero rice layer, and described water supply preposition pump motor and described pre feedwater pump are coaxially arranged in described zero rice layer; Wherein,
Described generator is connected with described feed pump turbine via described arrangements for speed regulation, and described generator is that described pre feedwater pump powers to drive described pre feedwater pump.
In one preferred embodiment, main feed pump, generator and arrangements for speed regulation are positioned at the same shaft end side of feed pump turbine.
Preferably, generator can be connected with the output terminal of main feed pump via arrangements for speed regulation, and the input end of main feed pump is connected with the axle head of feed pump turbine.
In another preferred embodiment, main feed pump is connected with the axle head of feed pump turbine both sides respectively with generator.
Preferably, generator is connected with the axle head of a side of feed pump turbine via arrangements for speed regulation, and the input end of main feed pump is connected with the axle head of the opposite side of feed pump turbine.
In another preferred embodiment, this layout also comprises water supply preposition pump motor, and water supply preposition pump motor and pre feedwater pump are coaxially arranged in zero rice layer, and water supply preposition pump motor is electrically connected to generator, in order to drive pre feedwater pump.
Preferably, layout also comprises the control gear being connected with pre feedwater pump electric electromechanics with generator, for controlling generator and water supply preposition pump motor, and then drives pre feedwater pump.
Preferably, arrangements for speed regulation are gear-boxes, or hydraulic couplers.
This layout is applicable to the steam feed pump group of 2 * 50% capacity, or is applicable to the steam feed pump group of 1 * 100% capacity.
The electric energy that the layout of steam feed pump group of the present utility model sends with generator drives the pre feedwater pump of low position, has saved station service.While pre feedwater pump low position, only oxygen-eliminating device need be arranged in to the lower height and position in Relative Zero rice layer ground just can meet the requirement of water supply preposition NPSH, thereby has saved civil engineering initial cost.Main feed pump and feed pump turbine are arranged in running layer, can utilize easily running layer large platform to safeguard equipment, have guaranteed the hydrophobic smooth and easy of feed pump turbine exhaust steam pipe simultaneously.
Accompanying drawing explanation
Fig. 1-3rd, the layout schematic diagram of steam feed pump group in prior art.
Fig. 4 is according to the schematic diagram of the layout of steam feed pump group in the first embodiment of the present utility model.
Fig. 5 is according to the schematic diagram of the layout of steam feed pump group in the second embodiment of the present utility model.
Embodiment
Below with reference to accompanying drawing, preferred embodiment of the present utility model is elaborated, to more clearly understand the purpose of this utility model, feature and advantage.It should be understood that embodiment shown in the drawings is not the restriction to the utility model scope, and just for the connotation of technical solutions of the utility model is described.
Steam feed pump group in the embodiment that below mentioned is for the steam feed pump group of 2 * 50% capacity.Those skilled in the art should be understood that after having read the disclosure steam feed pump group that the utility model proposes is also applicable to the steam feed pump group of 1 * 100% capacity.
Fig. 4 illustrates according to the layout schematic diagram of the first embodiment's of the present utility model steam feed pump group.As shown in Figure 4, steam turbine building is provided with zero rice layer 6, mesosphere 7, running layer 8 and deaerator bay 9, and steam feed pump group comprises feed pump turbine 1, main feed pump 2, water supply preposition pump motor 3, pre feedwater pump 4, gear-box 10, small generator 11 and control gear 12.Wherein, pre feedwater pump 4 and water supply preposition pump motor 3 low positions are at zero rice layer 6, and feed pump turbine 1, main feed pump 2, gear-box 10 and small generator 11 are arranged in running layer 8, and oxygen-eliminating device 5 is arranged in deaerator bay 9.Control gear can be arranged in any suitable position, is electrically connected to generator 11 and water supply preposition pump motor 3, for controlling described generator 11 and described water supply preposition pump motor 3, and then drives described pre feedwater pump 4.
At running layer 8, feed pump turbine 1, main feed pump 2, gear-box 10 and small generator 11 are coaxially arranged, and in the present embodiment, main feed pump 2 and small generator 11 are arranged in the same side of feed pump turbine 1.Feed pump turbine 1 connects the rotation input end of main feed pump 2, the rotation output terminal of main feed pump 2 is connected in the input end of gear-box 10, the output terminal of gear-box 10 is connected in the input end of small generator 11, small generator 11 output terminals are connected in control gear 12 one end, control gear 12 the other ends connect the input end of the water supply preposition pump motor 3 that is arranged in zero rice layer 6, the output terminal of water supply preposition pump motor 3 connects pre feedwater pump 4, and oxygen-eliminating device 5 is arranged in deaerator bay 9.In the present embodiment, because pre feedwater pump 4 low positions are at zero rice layer 6, thus oxygen-eliminating device 5 is arranged in to the net positive suction head requirement that relatively low height and position just can meet pre feedwater pump 4, so the relative low position of oxygen-eliminating device 5 is in deaerator bay 9.
The System Working Principle of the present embodiment is as follows:
During feed pump turbine 1 operation, drive main feed pump 2 operations, main feed pump 2 is by gear-box 10 speed governing rear driving small generator 11 operations simultaneously, after small generator 11 operations, will generate electricity, drive arrangement is in water supply preposition pump motor 3 operations of zero rice layer 6 under the control of control gear 12 for the electricity that small generator 11 sends, and water supply preposition pump motor 3 moves 4 operations of rear driving pre feedwater pump.The oxygen-eliminating device 5 that is arranged in deaerator bay 9 carries out phlogistication.
In the present embodiment, pre feedwater pump 4 is not used station service to drive, but uses the electric energy that the small generator 11 that carries in feed water pump group sends to drive, and has saved station service.
Fig. 5 illustrates according to the layout schematic diagram of the second embodiment's of the present utility model steam feed pump group.As shown in Figure 5, the steam feed pump group of the present embodiment comprises feed pump turbine 1, main feed pump 2, water supply preposition pump motor 3, pre feedwater pump 4, gear-box 10, small generator 11 and control gear 12.Wherein, pre feedwater pump 4 and water supply preposition pump motor 3 low positions are at zero rice layer 6, and feed pump turbine 1, main feed pump 2, gear-box 10 and small generator 11 high positions are arranged in running layer 8, and oxygen-eliminating device 5 is arranged in deaerator bay 9.
At running layer 8, feed pump turbine 1, main feed pump 2, gear-box 10 and small generator 11 are coaxially arranged, and in the present embodiment, main feed pump 2 and small generator 11 are arranged in the both sides of feed pump turbine 1.Feed pump turbine 1 one end connects main feed pump 2, the input end of feed pump turbine 1 the other end connection teeth roller box 10, gear-box 10 output terminals are connected in small generator 11 input ends, small generator 11 output terminals are connected in control gear 12 one end, control gear 12 the other ends are connected in the input end of the water supply preposition pump motor 3 that is arranged in zero rice layer 6, the output terminal of water supply preposition pump motor 3 coaxially connects pre feedwater pump 4, and oxygen-eliminating device 5 is arranged in deaerator bay 9.In the present embodiment, because pre feedwater pump 4 low positions are at zero rice layer 6, thus oxygen-eliminating device 5 is arranged in to the net positive suction head requirement that relatively low height and position just can meet pre feedwater pump 4, so the relative low position of oxygen-eliminating device 5 is in deaerator bay 9.
The System Working Principle of the present embodiment is as follows:
During feed pump turbine 1 operation, drive main feed pump 2 operations of feed pump turbine 1 one end, feed pump turbine 1 the other end is by speed governing rear driving small generator 11 operations of gear-box 10 simultaneously, after small generator 11 operations, will generate electricity, drive arrangement is in water supply preposition pump motor 3 operations of zero rice layer 6 under the control of control gear 12 for the electricity that small generator 11 sends, and water supply preposition pump motor 3 moves 4 operations of rear driving pre feedwater pump.The oxygen-eliminating device 5 that is arranged in deaerator bay 9 carries out phlogistication.
In the present embodiment, pre feedwater pump 4 is not used station service to drive, but uses the electric energy that the small generator 11 that carries in feed water pump group sends to drive, and has saved station service.
Compared with prior art, the utlity model has following major advantage:
(1) feed pump turbine, main feed pump and small generator are coaxially arranged at running layer, feed pump turbine also drives this small generator when driving main feed pump, the electric energy sending with small generator drives the pre feedwater pump of low position, has saved station service.
(2), due to pre feedwater pump low position, so only oxygen-eliminating device need be arranged in to the lower height and position in Relative Zero rice layer ground, just can meet the requirement of water supply preposition NPSH, thereby save civil engineering initial cost.
(3) main feed pump and feed pump turbine are arranged in running layer, can utilize easily running layer large platform to safeguard equipment, have guaranteed the hydrophobic smooth and easy of feed pump turbine exhaust steam pipe simultaneously.
Those skilled in the art should understand after having read the utility model, the design proposal that the utility model proposes, be only the optimization to thermal power plant water supply system, do not affect the existing design proposal of other system, and can arrange in pairs or groups flexibly with the various design proposals of other system.
Below described preferred embodiment of the present utility model in detail, but it will be appreciated that, after having read above-mentioned instruction content of the present utility model, those skilled in the art can make various changes or modifications the utility model.For example, gear-box can adopt other arrangements for speed regulation such as hydraulic couplers to substitute.These equivalent form of values fall within the application's appended claims limited range equally.
Claims (8)
1. the layout of a steam feed pump group, described steam feed pump group is arranged in the steam turbine building of power station and comprises feed pump turbine, main feed pump, pre feedwater pump and arrangements for speed regulation, described steam turbine building is provided with zero rice layer, mesosphere and running layer, it is characterized in that:
Described steam feed pump group also comprises generator and water supply preposition pump motor, and described generator and described feed pump turbine are coaxially arranged, and described water supply preposition pump motor is electrically connected to described generator, in order to drive described pre feedwater pump;
Described main feed pump and described feed pump turbine are arranged in described running layer, and described pre feedwater pump is arranged in described zero rice layer, and described water supply preposition pump motor and described pre feedwater pump are coaxially arranged in described zero rice layer; Wherein,
Described generator is connected with described feed pump turbine via described arrangements for speed regulation, and described generator is that described pre feedwater pump powers to drive described pre feedwater pump.
2. layout as claimed in claim 1, is characterized in that, described main feed pump, described generator and described arrangements for speed regulation are positioned at the same shaft end side of described feed pump turbine.
3. layout as claimed in claim 2, is characterized in that, described generator is connected with the output terminal of described main feed pump via described arrangements for speed regulation, and the input end of described main feed pump is connected with the axle head of described feed pump turbine.
4. layout as claimed in claim 1, is characterized in that, described main feed pump is connected with the axle head of described feed pump turbine both sides respectively with described generator.
5. layout as claimed in claim 4, is characterized in that, described generator is connected with the axle head of a side of described feed pump turbine via described arrangements for speed regulation, and the input end of described main feed pump is connected with the axle head of the opposite side of described feed pump turbine.
6. layout as claimed in claim 1, it is characterized in that, described layout also comprises the control gear being connected with described pre feedwater pump electric electromechanics with described generator, for controlling described generator and described water supply preposition pump motor, and then drives described pre feedwater pump.
7. layout as claimed in claim 1, is characterized in that, described arrangements for speed regulation are gear-boxes, or hydraulic couplers.
8. layout as claimed in claim 1, is characterized in that, described layout is applicable to the steam feed pump group of 2 * 50% capacity, or is applicable to the steam feed pump group of 1 * 100% capacity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320642791.9U CN203515985U (en) | 2013-10-17 | 2013-10-17 | Arrangement structure of pneumatic water supply pump set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320642791.9U CN203515985U (en) | 2013-10-17 | 2013-10-17 | Arrangement structure of pneumatic water supply pump set |
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| Publication Number | Publication Date |
|---|---|
| CN203515985U true CN203515985U (en) | 2014-04-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320642791.9U Withdrawn - After Issue CN203515985U (en) | 2013-10-17 | 2013-10-17 | Arrangement structure of pneumatic water supply pump set |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103498782A (en) * | 2013-10-17 | 2014-01-08 | 中国电力工程顾问集团华东电力设计院 | Arrangement structure of pneumatic water supply pump set and water supply booster pump arrangement method thereof |
-
2013
- 2013-10-17 CN CN201320642791.9U patent/CN203515985U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103498782A (en) * | 2013-10-17 | 2014-01-08 | 中国电力工程顾问集团华东电力设计院 | Arrangement structure of pneumatic water supply pump set and water supply booster pump arrangement method thereof |
| CN103498782B (en) * | 2013-10-17 | 2016-04-13 | 中国电力工程顾问集团华东电力设计院有限公司 | A kind of layout of automobile assembly welding Iine and pre feedwater pump method for arranging thereof |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140402 Effective date of abandoning: 20160413 |
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| C25 | Abandonment of patent right or utility model to avoid double patenting |