CN204404162U - Combined cycle gas-steam turbine power plant water supply system - Google Patents
Combined cycle gas-steam turbine power plant water supply system Download PDFInfo
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- CN204404162U CN204404162U CN201420860132.7U CN201420860132U CN204404162U CN 204404162 U CN204404162 U CN 204404162U CN 201420860132 U CN201420860132 U CN 201420860132U CN 204404162 U CN204404162 U CN 204404162U
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Abstract
The utility model discloses a kind of Combined cycle gas-steam turbine power plant water supply system, solve the problem that existing GTCC power plant waste heat boiler feed water pump matching quantity is many and occupation of land is large.The condensate water delivery outlet comprising condenser hotwell (3) is communicated with the water inlet of condensate pump (2), the delivery port of condensate pump (2) is communicated with the water inlet of condensation water heater (8), the delivery port of condensation water heater (8) is communicated with the water inlet of oxygen-eliminating device (4), the saturation water delivery outlet of low-pressure drum (5) is communicated with the water inlet of high pressure feed pump (1), the middle pressure admission port of high pressure feed pump (1) is communicated with the input port of middle pressure economizer (9), the delivery outlet of middle pressure economizer (9) is communicated with the input port of middle pressure drum (6), the high-pressure outlet of high pressure feed pump (1) is communicated with the water inlet of high-pressure economizer (10), the delivery port of high-pressure economizer (10) is communicated with the input port of HP steam drum (7).Save floor space.
Description
Technical field
The utility model relates to a kind of F level Gas-steam Combined Cycle power plant high pressure feed pump that is applied to and merges the water supply system arranged, and is that high pressure water pump and middle pressure feed pump are merged into high pressure to hydration pump; Low pressure feed water is after high pressure is to the boosting of hydration pump, and the feedwater of high-pressure outlet is delivered to high-pressure economizer and heats, and tapped feedwater is delivered to middle pressure economizer and heats.
Background technology
At present, the waste heat boiler of domestic F level Gas-steam Combined Cycle power plant is three pressure Natural Circulation HRSGs, and namely every platform waste heat boiler has a HP steam drum, presses drum and a low-pressure drum in one.The feedwater entering HP steam drum, middle pressure drum and low-pressure drum is sent into respectively by the power of high pressure water pump, middle pressure feed pump and condensate pump.This system configuration mature and reliable, security of operation are stablized, but in system, the number of units of water pump is more, and take up an area comparatively large, pipe-line system is complicated, and initial cost is higher; And in running, because water pump quantity is many, control system is also comparatively complicated.
Summary of the invention
The utility model provides a kind of Combined cycle gas-steam turbine power plant water supply system, solves existing GTCC power plant waste heat boiler feed water pump matching quantity more, and take up an area comparatively large, initial cost is higher, the problem of system complex.
The utility model solves above technical problem by the following technical programs:
A kind of Combined cycle gas-steam turbine power plant water supply system, comprise condensate pump, condenser, oxygen-eliminating device, low-pressure drum, middle pressure drum, HP steam drum, condensation water heater, middle pressure economizer, high-pressure economizer and low-pressure superheater, the condensate water delivery outlet of condenser hotwell is communicated with the water inlet of condensate pump, the delivery port of condensate pump is communicated with the water inlet of condensation water heater, the delivery port of condensation water heater is communicated with the water inlet of oxygen-eliminating device, oxygen-eliminating device is arranged on low-pressure drum, after the saturation water delivery outlet of low-pressure drum is communicated with the water inlet of high pressure feed pump and boosts, the middle pressure admission port of high pressure feed pump is communicated with the input port of middle pressure economizer, the delivery outlet of middle pressure economizer is communicated with the input port of middle pressure drum, the high-pressure outlet of high pressure feed pump is communicated with the water inlet of high-pressure economizer, the delivery port of high-pressure economizer is communicated with the input port of HP steam drum.
The saturated vapor mouth of low-pressure drum is communicated with the steam ports that enters of low-pressure superheater, and the venthole of low-pressure superheater is communicated with steam turbine low-pressure cylinder.
High pressure of the present utility model, to hydration pumping system, compared with dividing pumping system, simplifies the configuration mode of water pump, saves floor space, saved initial cost with the high pressure feed pump of conventional project, is adapted at applying in the fuel engine power generation factory of three pressure waste heat boilers.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is described in detail:
The utility model is after boosting from the condensate water of condenser hotwell 3 by condensate pump 2, enter the low-pressure drum 5 being admitted to band oxygen-eliminating device 4 after condensation water heater 8 heats, the saturated vapor of low-pressure drum 5 is communicated with steam turbine low-pressure cylinder after low-pressure superheater 11 heats, and becomes the main vapour of low pressure and sends into steam turbine acting; The saturation water of low-pressure drum 5 is after high pressure is boosted to hydration pump 1, the middle pressure feedwater that centre tap is drawn enters middle pressure drum 6 after pressing economizer 9 to heat in sending into again, and the high-pressure feed water that high-pressure outlet is drawn is sent into after high-pressure economizer 10 heats and entered HP steam drum 7 again.
The waste heat boiler configuration high pressure water pump of 2 × 100% capacity that conventional F level gas turbine is supporting and the middle pressure feed pump of 2 × 100% capacity; Separate unit high pressure water pump takes up an area and is about 6000 millimeters × 1600 millimeters, motor power (output) 2500KW, pump efficiency 79%; Press feed pump to take up an area in separate unit and be about 3500 millimeters × 1400 millimeters, motor power (output) 400KW, pump efficiency 75%.If the high pressure of configuration 2 × 100% capacity is to hydration pump, single pump takes up an area and is about 6000 millimeters × 1600 millimeters, motor power (output) 2700KW, pump efficiency 80%.Can find out from above-mentioned data, close pump compared with wheel cylinder, pump efficiency is high, and motor general power is little, and overall floor space is little.
Claims (2)
1. a Combined cycle gas-steam turbine power plant water supply system, comprise condensate pump (2), condenser (3), oxygen-eliminating device (4), low-pressure drum (5), middle pressure drum (6), HP steam drum (7), condensation water heater (8), middle pressure economizer (9), high-pressure economizer (10) and low-pressure superheater (11), the condensate water delivery outlet of condenser hotwell (3) is communicated with the water inlet of condensate pump (2), the delivery port of condensate pump (2) is communicated with the water inlet of condensation water heater (8), the delivery port of condensation water heater (8) is communicated with the water inlet of oxygen-eliminating device (4), oxygen-eliminating device (4) is arranged on low-pressure drum (5), it is characterized in that, the saturation water delivery outlet of low-pressure drum (5) is communicated with the water inlet of high pressure feed pump (1), the middle pressure admission port of high pressure feed pump (1) is communicated with the input port of middle pressure economizer (9), the delivery outlet of middle pressure economizer (9) is communicated with the input port of middle pressure drum (6), the high-pressure outlet of high pressure feed pump (1) is communicated with the water inlet of high-pressure economizer (10), the delivery port of high-pressure economizer (10) is communicated with the input port of HP steam drum (7).
2. a kind of Combined cycle gas-steam turbine power plant according to claim 1 water supply system, it is characterized in that, the saturated vapor mouth of low-pressure drum (5) is communicated with the steam ports that enters of low-pressure superheater (11), and the venthole of low-pressure superheater (11) is communicated with steam turbine low-pressure cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420860132.7U CN204404162U (en) | 2014-12-31 | 2014-12-31 | Combined cycle gas-steam turbine power plant water supply system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420860132.7U CN204404162U (en) | 2014-12-31 | 2014-12-31 | Combined cycle gas-steam turbine power plant water supply system |
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| Publication Number | Publication Date |
|---|---|
| CN204404162U true CN204404162U (en) | 2015-06-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420860132.7U Active CN204404162U (en) | 2014-12-31 | 2014-12-31 | Combined cycle gas-steam turbine power plant water supply system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106338060B (en) * | 2016-08-08 | 2018-11-09 | 东方菱日锅炉有限公司 | The water supply system of Combined Cycle Heat Recovery Boiler |
| CN111238240A (en) * | 2020-02-19 | 2020-06-05 | 重庆赛迪热工环保工程技术有限公司 | Walking beam formula heating furnace vaporization cooling system |
| CN112781025A (en) * | 2020-12-29 | 2021-05-11 | 哈尔滨锅炉厂有限责任公司 | Direct-flow steam-water system for waste heat boiler and use method thereof |
-
2014
- 2014-12-31 CN CN201420860132.7U patent/CN204404162U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106338060B (en) * | 2016-08-08 | 2018-11-09 | 东方菱日锅炉有限公司 | The water supply system of Combined Cycle Heat Recovery Boiler |
| CN111238240A (en) * | 2020-02-19 | 2020-06-05 | 重庆赛迪热工环保工程技术有限公司 | Walking beam formula heating furnace vaporization cooling system |
| CN112781025A (en) * | 2020-12-29 | 2021-05-11 | 哈尔滨锅炉厂有限责任公司 | Direct-flow steam-water system for waste heat boiler and use method thereof |
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