CN202810977U - Condensed steam back-heating type small-turbine driving rotation equipment system of thermal power plant - Google Patents
Condensed steam back-heating type small-turbine driving rotation equipment system of thermal power plant Download PDFInfo
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- CN202810977U CN202810977U CN 201220499373 CN201220499373U CN202810977U CN 202810977 U CN202810977 U CN 202810977U CN 201220499373 CN201220499373 CN 201220499373 CN 201220499373 U CN201220499373 U CN 201220499373U CN 202810977 U CN202810977 U CN 202810977U
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Abstract
The utility model discloses a condensed steam back-heating type small-turbine driving rotation equipment system of a thermal power plant. The condensed steam back-heating type small-turbine driving rotation equipment system comprises a small turbine, a small-turbine steam-discharging cooler, a main machine condensate water pump, a low pressure heater and a shaft seal heater, wherein the steam discharging port of the small turbine is connected with the small-turbine steam discharging cooler, the small-turbine steam discharging cooler is connected with the outlet of the shaft seal heater and the inlet of the low pressure heater, and the shaft seal heater is connected with a main machine condenser through the main machine condensate water pump. The condensed steam back-heating type small-turbine driving rotation equipment system has the advantages of reducing the plant service power consumption rate of the thermal power plant, saving consumed coal for power generation, saving equipment investment, improving gains of the thermal power plant and the like, can be applied in engineering, and provides a good solution for reduction of the plant service power consumption rate of the thermal power plant, reduction of energy consumption, and increase of net on-grid energy.
Description
Technical field
The utility model relates to engineering field, thermal power plant, especially relates to the little machine of a kind of condensing regenerative heat type and drives the rotating machinery system.
Background technique
Energy-saving and emission-reduction are long-term national policies of China, and the thermal power plant is China energy consumption rich and influential family, are the most important things of energy-saving and emission-reduction; Station service power consumption rate is one of power plant's main economic and technical indices, and China's power industry is commonly considered as the percentage that necessary own demand in the power station power production process accounts for generated energy.
In recent years, along with the improvement of electric power factory equipment performance, the improvement of design level, managerial skills and the raising of automatic control level, energy consumption and the station service power consumption rate of China power plant all decrease.By present dispatching of power netwoks situation, clean electricity volume will be deducted station service, and to the unit of same capability, station service is higher, and clean electricity volume is fewer, and electricity power enterprise's income is also just lower.Electricity power enterprise is in order to reduce station service power consumption rate, and present many power plant have adopted little machine to drive supplementary equipment, has the not energy-conservation problem of economize on electricity.
The model utility content
The purpose of this utility model is to provide condensing regenerative heat type little machine in a kind of thermal power plant to drive the rotating machinery system, to solve the problem that thermal power plant steam-operating auxiliary equipment system is complicated, equipment investment is higher and economize on electricity is not energy-conservation.
To achieve these goals, the utility model adopts following technological scheme:
Condensing regenerative heat type little machine in a kind of thermal power plant drives the rotating machinery system, comprises little steam turbine, little machine steam discharge cooler, main frame condensate pump, low-pressure heater and gland heater; The steam-expelling port of little steam turbine connects little machine steam discharge cooler; Little machine steam discharge cooler connects the outlet of gland heater and the entrance of low-pressure heater; Gland heater connects the main frame vapour condenser by the main frame condensate pump.
The utility model further improves and is: condensing regenerative heat type little machine in described thermal power plant drives the rotating machinery system and also comprises little machine condensate pump; Little machine steam discharge cooler connects the outlet condensate pipe of main frame vapour condenser or little machine steam discharge cooler by little machine condensate pump.
The utility model further improves and is: condensing regenerative heat type little machine in described thermal power plant drives the rotating machinery system and also comprises little machine vacuum pump, and little machine vacuum pump connects described little machine steam discharge cooler.
The utility model further improves and is: condensing regenerative heat type little machine in described thermal power plant drives the rotating machinery system and also comprises minimum flow regulating valve; Minimum flow regulating valve one end connects little machine steam discharge cooler, and the other end connects the main frame vapour condenser.
The utility model further improves and is: described little steam turbine is the little steam turbine of condensed steam type.
The utility model further improves and is: the steam inlet connection main frame fourth stage of little steam turbine draws gas and exports or the Low Temperature Reheater outlet.
For prior art, the utlity model has following advantage with existing:
(1) for present dispatching of power netwoks situation, can effectively reduce the thermal power plant station service power consumption rate, reduced simultaneously energy consumption, save the investment of steam-operating supplementary equipment;
(2) system is simple, can cancel little machine circulation;
(3) little steam turbine can adopt variable-speed operation, has improved unit sub load subsidiary engine efficient.
Description of drawings
Fig. 1 is the structural representation of the utility model system;
Among the figure: 1, little steam turbine, 2, little machine steam discharge cooler, 3, little machine vacuum pump, 4, little machine condensate pump, 5, the main frame condensate pump, 6, low-pressure heater, 7, gland heater, 8, minimum flow regulating valve.
Embodiment
Describe the technical solution of the utility model in detail below in conjunction with accompanying drawing.
See also shown in Figure 1, condensing regenerative heat type little machine in a kind of thermal power plant of the utility model drives the rotating machinery system, comprises little steam turbine 1, little machine steam discharge cooler 2, little machine vacuum pump 3, little machine condensate pump 4, main frame condensate pump 5, low-pressure heater 6, gland heater 7 and minimum flow regulating valve 8.
Power plant's rotary machine adopts accompanying drawing 1 medium and small steam turbine 1 to drive, and little steam turbine 1 is the little steam turbine of condensed steam type, and little steam turbine 1 internal efficiency is high, has significantly reduced simultaneously to drive little steam turbine 1 steam discharge loss.Little steam turbine 1 adopts draw gas four sections of the outlets of the main frame fourth stage to draw gas or Low Temperature Reheater outlet steam, and little steam turbine exhausted spare heat is reclaimed in little machine steam discharge cooler 2 coolings that little steam turbine 1 steam discharge utilizes gland heater 7 outlets to arrange; Condensed little machine steam discharge is delivered to large machine vapour condenser or the further recovery waste heat of little machine steam discharge cooler 2 outlet condensing water conduits by little machine condensate pump 4, little machine steam discharge cooler 2 interior incondensable gases then by little machine vacuum pump 3 row's atmosphere, are kept little machine steam discharge degree of vacuum; Large machine was loaded low or sudden change, when little machine back pressure reaches alarming value, guaranteed little steam turbine 1 back pressure by strengthening main frame condensate pump 5 flows, and rich flow drains into large machine vapour condenser by minimum flow regulating valve 8.
In the utility model, drive little steam turbine and adopt condensing steam turbine to drive, little steam turbine exhaust pressure is less than barometric pressure, and steam discharge does not have cold end loss by the cooling of main frame water of condensation; Adopt condensed steam type small turbine drive scheme, drive the vapour source and adopt four sections in large machine to draw gas or Low Temperature Reheater outlet steam, it is large to drive the effective enthalpy drop in vapour source, and little machine internal efficiency is high, and the loss of final stage wet steam is little, and little machine back pressure is more stable; The condensed steam type small turbine drive of usefulness the water quench that generally adopts the relatively at present situation of not economizing on coal of economizing on electricity can accomplish not only to economize on electricity but also economize on coal; Relative back pressure type small turbine drive scheme, little machine consumption of steam is little, and little machine internal efficiency is high, and back pressure is stable; In pure condensate power plant, cycle efficiency is high.
Although the above is described the utility model by reference to the accompanying drawings; but the utility model is not limited to above-mentioned embodiment; above-mentioned embodiment only is schematic; rather than restrictive; those of ordinary skill in the art is under enlightenment of the present utility model; not breaking away from the scope situation that the utility model aim and claim protect, can also make a lot of forms, these all belong within the protection of the present utility model.
Claims (6)
1. the little machine of thermal power plant condensing regenerative heat type drives the rotating machinery system, it is characterized in that, comprises little steam turbine (1), little machine steam discharge cooler (2), main frame condensate pump (5), low-pressure heater (6) and gland heater (7); The steam-expelling port of little steam turbine (1) connects little machine steam discharge cooler (2); Little machine steam discharge cooler (2) connects the outlet of gland heater (7) and the entrance of low-pressure heater (6); Gland heater (7) connects the main frame vapour condenser by main frame condensate pump (5).
2. the little machine of a kind of thermal power plant condensing regenerative heat type according to claim 1 drives the rotating machinery system, it is characterized in that, condensing regenerative heat type little machine in described thermal power plant drives the rotating machinery system and also comprises little machine condensate pump (4); Little machine steam discharge cooler (2) connects the outlet condensate pipe of main frame vapour condenser or little machine steam discharge cooler (2) by little machine condensate pump (4).
3. the little machine of a kind of thermal power plant condensing regenerative heat type according to claim 1 drives the rotating machinery system, it is characterized in that, condensing regenerative heat type little machine in described thermal power plant drives the rotating machinery system and also comprises little machine vacuum pump (3), and little machine vacuum pump (3) connects described little machine steam discharge cooler (2).
4. the little machine of a kind of thermal power plant condensing regenerative heat type according to claim 2 drives the rotating machinery system, it is characterized in that, condensing regenerative heat type little machine in described thermal power plant drives the rotating machinery system and also comprises minimum flow regulating valve (8); Minimum flow regulating valve (8) one ends connect little machine steam discharge cooler (2), and the other end connects the main frame vapour condenser.
5. the little machine of a kind of thermal power plant condensing regenerative heat type according to claim 1 drives the rotating machinery system, it is characterized in that described little steam turbine (1) is the little steam turbine of condensed steam type.
6. the little machine of a kind of thermal power plant condensing regenerative heat type according to claim 1 drives the rotating machinery system, it is characterized in that, the steam inlet connection main frame fourth stage of little steam turbine (1) draws gas and exports or the Low Temperature Reheater outlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220499373 CN202810977U (en) | 2012-09-27 | 2012-09-27 | Condensed steam back-heating type small-turbine driving rotation equipment system of thermal power plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220499373 CN202810977U (en) | 2012-09-27 | 2012-09-27 | Condensed steam back-heating type small-turbine driving rotation equipment system of thermal power plant |
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| Publication Number | Publication Date |
|---|---|
| CN202810977U true CN202810977U (en) | 2013-03-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220499373 Expired - Lifetime CN202810977U (en) | 2012-09-27 | 2012-09-27 | Condensed steam back-heating type small-turbine driving rotation equipment system of thermal power plant |
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| CN (1) | CN202810977U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104100314A (en) * | 2014-07-16 | 2014-10-15 | 西安热工研究院有限公司 | Steam discharge waste heat utilization system of condensing type small turbine for driving induced draft fan |
| CN104864732A (en) * | 2015-05-15 | 2015-08-26 | 西安热工研究院有限公司 | Evaporation type condenser system used for thermal power plant small steam turbine steam exhaust condensing |
| CN109209881A (en) * | 2018-10-12 | 2019-01-15 | 大唐淮北发电厂 | Power Plant vacuum structure |
-
2012
- 2012-09-27 CN CN 201220499373 patent/CN202810977U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104100314A (en) * | 2014-07-16 | 2014-10-15 | 西安热工研究院有限公司 | Steam discharge waste heat utilization system of condensing type small turbine for driving induced draft fan |
| CN104100314B (en) * | 2014-07-16 | 2016-03-02 | 西安热工研究院有限公司 | A kind of condensed steam type small steam turbine exhaust steam bootstrap system driving induced draught fan |
| CN104864732A (en) * | 2015-05-15 | 2015-08-26 | 西安热工研究院有限公司 | Evaporation type condenser system used for thermal power plant small steam turbine steam exhaust condensing |
| CN109209881A (en) * | 2018-10-12 | 2019-01-15 | 大唐淮北发电厂 | Power Plant vacuum structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: NORTHWEST ELECTRIC POWER DESIGN INSTITUTE OF CHINA Free format text: FORMER NAME: NORTHWEST ELECTRIC POWER DESIGN INSTITUTE, CHINA POWER ENGINEERING CONSULTING GROUP CORPORATION |
|
| CP03 | Change of name, title or address |
Address after: 22 No. 710075, unity South Road, hi tech Industrial Development Zone, Shaanxi, Xi'an Patentee after: NORTHWEST ELECTRIC POWER DESIGN INSTITUTE CO., LTD. OF CHINA POWER ENGINEERING CONSULTING Group Address before: 710075 Xi'an province high tech Development Zone, unity South Road, No. 22, No. Patentee before: NORTHWEST ELECTRIC POWER DESIGN INST. OF CHINA POWER ENGINEERING CONSULTING Group |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130320 |