CN205260334U - Water pump system is given to 100% capacity steam -operating in large unit of power plant boiler - Google Patents
Water pump system is given to 100% capacity steam -operating in large unit of power plant boiler Download PDFInfo
- Publication number
- CN205260334U CN205260334U CN201521058478.6U CN201521058478U CN205260334U CN 205260334 U CN205260334 U CN 205260334U CN 201521058478 U CN201521058478 U CN 201521058478U CN 205260334 U CN205260334 U CN 205260334U
- Authority
- CN
- China
- Prior art keywords
- pump
- feed pump
- capacity
- steam
- power plant
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model relates to a water supply system technical field of power plant, in particular to water pump system is given to 100% capacity steam -operating in large unit of power plant boiler, including steam turbine, booster pump, water -feeding pump and oxygen -eliminating device, the steam turbine is equipped with coaxial leading axle and rearmounted axle, leading axle is connected with leading pump drive through the reduction gear, rearmounted axle is connected with feedwater pump drive, the input of booster pump passes through the pipeline and is connected with the oxygen -eliminating device, the output of booster pump passes through the pipeline and is connected with the input of water -feeding pump, the output of water -feeding pump passes through the pipeline and is connected with high pressure feed water heater, the water -feeding pump is the steam feed pump of 100% capacity. The utility model discloses reduce the cost, the construction is simple, and the system is simple, and maintenance work volume is little. 100% full capacity steam feed pump, but simplified system, the unit heat rate is favorable to improving the economic nature of unit operation than adopting 2 50% capacity configuration to hang down moreover to station service power consumption rate has been reduced.
Description
Technical field
The utility model relates to power plant's water supply system technical field, particularly the large-scale unit boiler 100% capacity steam feed pump system of a kind of power plant.
Background technology
Power industry is the important foundation industry of national economy, is also emphasis and the look-ahead industry of national economic development strategy. Along with the sustainable and healthy development of China's economy, the installed capacity in the whole nation also increases thereupon. According to the data that on August 16th, 2009 obtains from national work about electric power meeting, China's capacity of installed generator has broken through 800,000,000 kilowatts, wherein 75% Turbo-generator Set from thermal power station and nuclear power station. Expect the year two thousand twenty, the capacity of installed generator of China will reach 1,200,000,000 kilowatts, and wherein thermoelectricity accounts for 65% left and right. In the primary energy structure of China, the ratio maximum that coal resources are shared, is about 75.87%, and this energy resource structure feature certainly will affect coal fired power generation shared ratio in China's generating. According to statistics, coal-fired 65% left and right that accounts for coal total output ratio of China's generating, this situation is estimated also will continue the quite a long time. Because coal resource is non-renewable energy resources, for offspring considers, can not wasting and exhaust, is exactly a urgent task so improve coal using energy source level, but China's fired power generating unit exists problems at present, be mainly manifested in: the shared ratio of consumption coal fired power generating unit low, that efficiency is high is low, conventional little fired power generating unit ratio is excessive, and single-machine capacity is less than normal, although by " upper large pressure is little " policy, close a large amount of units below 200MW, also had a certain distance compared with international most advanced level;
In order to meet unit starting requirement flexibly, in power plant, is conventionally furnished with electrically driven feed pump. Function distinguishing according to electrically driven feed pump in unit, is divided into and starts pump and startup/stand-by pump two kinds.
(1) start pump: it acts on only in unit starting process, flow and pressure requirement while meeting unit starting. Under certain load, be switched to after heat pump, excision, exits water supply system.
(2) startup/stand-by pump: the requirement of flow and pressure when its effect not only will meet unit starting. Meanwhile, in unit running process, in stand-by heat, in the time that a steam feed pump breaks down, can with another steam feed pump paired running, maintain unit and under high load, move trying one's best.
China has put into operation or at the 600MW super (super-) critical pure condensate unit of building, from simplification system, has reduced the angle of initial cost at present, and electrodynamic pump can only be considered its start-up performance or cancel electrically driven feed pump. Because adopting pure electrically driven feed pump, 600MW unit has following shortcoming:
(1) adopt pure electrically driven feed pump can improve the station service of unit, reduce outer delivery; And employing steam feed pump, its vapour source, from the low-pressure pumping steam of main frame, is conducive to improve the effectiveness of regenerator of main frame, thereby improves generatine set heat efficiency.
(2) for 600MW unit, the electrically driven feed pump capacity of 50% capacity is larger, power is about 14MW, electric pressure is wanted 10kV, when startup, station service voltage pulsation is large, be unfavorable for unit safety operation, strengthened the rupturing capacity of HV Auxiliary Transformer capacity and primary cut-out simultaneously, significantly increased electric initial cost.
At present most domestic 600MW unit adopts 2 50% capacity steam feed pumps, exists and takies place, system complex, the shortcoming such as the hear rate of unit is high, less economical.
Utility model content
The purpose of this utility model is for the deficiencies in the prior art, provides a kind of power plant large-scale unit boiler 100% capacity steam feed pump system.
For addressing the above problem, the utility model provides following technical scheme:
The large-scale unit boiler 100% capacity steam feed pump system of a kind of power plant, comprises steam turbine, fore pump, feed pump and oxygen-eliminating device; Described steam turbine is provided with coaxial preposition axle and rearmounted axle; Described preposition axle is in transmission connection by decelerator and fore pump; Described rearmounted axle and feed pump are in transmission connection; The input of described fore pump is connected with oxygen-eliminating device by pipeline; Described preposition delivery side of pump is connected with the input of feed pump by pipeline; Described feedwater delivery side of pump is connected with high-pressure heater by pipeline; Described feed pump is the steam feed pump of 100% capacity.
Further, the corresponding fore pump of described oxygen-eliminating device is high-order arranges.
Further, described feed pump and steam turbine are provided with independently spring vibration isolation basis.
Air pump outlet motor-driven valve is installed on the pipeline that further, described feed pump is connected with high-pressure heater.
Beneficial effect: the large-scale unit boiler 100% capacity steam feed pump system of a kind of power plant of the present utility model, reduce cost, construction is simple, and system is simple, and maintenance workload is little. 100% full capacity steam feed pump, can simplify system, and unit hear rate is lower than 2 × 50% capacity configuration modes of employing, is conducive to improve the economy of unit operation, and has reduced station service power consumption rate.
Brief description of the drawings
Fig. 1 is schematic diagram of the present utility model.
Fig. 2 is scheme of installation of the present utility model;
Description of reference numerals: steam turbine 1, fore pump 2, feed pump 3, oxygen-eliminating device 4, air pump outlet motor-driven valve 5.
Detailed description of the invention
Below in conjunction with Figure of description and embodiment, specific embodiment of the utility model is described in further detail:
The large-scale unit boiler 100% capacity steam feed pump system of a kind of power plant shown in seeing figures.1.and.2, comprises steam turbine 1, fore pump 2, feed pump 3 and oxygen-eliminating device 4; Described steam turbine 1 is provided with coaxial preposition axle and rearmounted axle; Described preposition axle is in transmission connection by decelerator and fore pump 2; Described rearmounted axle and feed pump 3 are in transmission connection; The input of described fore pump 2 is connected with oxygen-eliminating device 4 by pipeline; The output of described fore pump 2 is connected with the input of feed pump 3 by pipeline; The output of described feed pump 3 is connected with high-pressure heater by pipeline; Described feed pump 3 is the steam feed pump of 100% capacity.
The high-order layout of the corresponding fore pump 2 of described oxygen-eliminating device 4.
Described feed pump 3 is provided with independently spring vibration isolation basis with steam turbine 1.
Air pump outlet motor-driven valve 5 is installed on the pipeline that described feed pump 3 is connected with high-pressure heater.
It should be noted that, in the utility model, adopt separate unit 100% steam feed pump 3 arrangements, and steam turbine 1 is that two shafts are arranged, fore pump 2 and feed pump 3 are arranged in to identical platform, realize fore pump 2 coaxially arranged with feed pump 3. Steam turbine 1 both sides shaft, a side drives feed pump 3, and opposite side is connected with fore pump 2 by reduction box. Feedwater from oxygen-eliminating device come for 4 fore pump 2 pressurize laggard enter main feed pump 3 boost after feedwater to high-pressure heater.
In addition, during for minimizing unit operation, vibrate the impact on equipment, be required to be feed pump 3 and steam turbine 1 and design isolated footing or spring vibration isolation basis; Compare main building and arrange the scheme of steam turbine 1, steam turbine building and deaerator bay total span reduce, and have reduced computer room construction input; Oxygen-eliminating device 4 is high-order to be arranged, utilizes potential energy that feedwater is delivered to fore pump 2.
Comprehensively above-mentioned, the large-scale unit boiler 100% capacity steam feed pump system of a kind of power plant of the present utility model, reduces cost, and construction is simple, and system is simple, and maintenance workload is little. 100% full capacity steam feed pump, can simplify system, and unit hear rate is lower than 2 × 50% capacity configuration modes of employing, is conducive to improve the economy of unit operation, and has reduced station service power consumption rate.
The above, it is only preferred embodiment of the present utility model, not technical scope of the present utility model is made to any restriction, therefore any trickle amendment, equivalent variations and modification that every foundation technical spirit of the present utility model is done above embodiment, all still belong in the scope of the technical solution of the utility model.
Claims (4)
1. the large-scale unit boiler 100% capacity steam feed pump system of power plant, is characterized in that: comprise steam turbine (1), fore pump (2), feed pump (3) and oxygen-eliminating device (4); Described steam turbine (1) is provided with coaxial preposition axle and rearmounted axle; Described preposition axle is in transmission connection by decelerator and fore pump (2); Described rearmounted axle and feed pump (3) are in transmission connection; The input of described fore pump (2) is connected with oxygen-eliminating device (4) by pipeline; The output of described fore pump (2) is connected with the input of feed pump (3) by pipeline; The output of described feed pump (3) is connected with high-pressure heater by pipeline; Described feed pump (3) is the steam feed pump (3) of 100% capacity.
2. the large-scale unit boiler 100% capacity steam feed pump system of a kind of power plant according to claim 1, is characterized in that: the corresponding fore pump of described oxygen-eliminating device (4) (2) is high-order to be arranged.
3. the large-scale unit boiler 100% capacity steam feed pump system of a kind of power plant according to claim 1, is characterized in that: described feed pump (3) is provided with independently spring vibration isolation basis with steam turbine (1).
4. the large-scale unit boiler 100% capacity steam feed pump system of a kind of power plant according to claim 1, is characterized in that: air pump outlet motor-driven valve (5) is installed on the pipeline that described feed pump (3) is connected with high-pressure heater.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521058478.6U CN205260334U (en) | 2015-12-18 | 2015-12-18 | Water pump system is given to 100% capacity steam -operating in large unit of power plant boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521058478.6U CN205260334U (en) | 2015-12-18 | 2015-12-18 | Water pump system is given to 100% capacity steam -operating in large unit of power plant boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205260334U true CN205260334U (en) | 2016-05-25 |
Family
ID=56001864
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521058478.6U Active CN205260334U (en) | 2015-12-18 | 2015-12-18 | Water pump system is given to 100% capacity steam -operating in large unit of power plant boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205260334U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107044397A (en) * | 2017-04-18 | 2017-08-15 | 上海申能电力科技有限公司 | A kind of high and low rotating speed steam feed pump system |
| CN109307258A (en) * | 2018-09-03 | 2019-02-05 | 福建省鸿山热电有限责任公司 | A kind of overcritical heat supply thermal power plant high temperature heater (HTH) leak judgment method |
| CN110043439A (en) * | 2019-04-02 | 2019-07-23 | 南通常安能源有限公司 | A kind of steam feed pump system and method |
| CN113431639A (en) * | 2021-07-28 | 2021-09-24 | 华能秦煤瑞金发电有限责任公司 | Novel water feed pump speed regulating device and method |
| CN113482900A (en) * | 2021-07-28 | 2021-10-08 | 西安热工研究院有限公司 | Non-coaxial steam-driven feed pump preposed pump speed regulating system under deep frequency conversion working condition |
| CN113864173A (en) * | 2021-08-27 | 2021-12-31 | 华能秦煤瑞金发电有限责任公司 | Novel feed pump speed regulating device |
-
2015
- 2015-12-18 CN CN201521058478.6U patent/CN205260334U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107044397A (en) * | 2017-04-18 | 2017-08-15 | 上海申能电力科技有限公司 | A kind of high and low rotating speed steam feed pump system |
| CN109307258A (en) * | 2018-09-03 | 2019-02-05 | 福建省鸿山热电有限责任公司 | A kind of overcritical heat supply thermal power plant high temperature heater (HTH) leak judgment method |
| CN110043439A (en) * | 2019-04-02 | 2019-07-23 | 南通常安能源有限公司 | A kind of steam feed pump system and method |
| CN113431639A (en) * | 2021-07-28 | 2021-09-24 | 华能秦煤瑞金发电有限责任公司 | Novel water feed pump speed regulating device and method |
| CN113482900A (en) * | 2021-07-28 | 2021-10-08 | 西安热工研究院有限公司 | Non-coaxial steam-driven feed pump preposed pump speed regulating system under deep frequency conversion working condition |
| CN113431639B (en) * | 2021-07-28 | 2023-09-29 | 华能秦煤瑞金发电有限责任公司 | Water supply pump speed regulating device and method |
| CN113864173A (en) * | 2021-08-27 | 2021-12-31 | 华能秦煤瑞金发电有限责任公司 | Novel feed pump speed regulating device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205260334U (en) | Water pump system is given to 100% capacity steam -operating in large unit of power plant boiler | |
| CN104566331B (en) | A kind of cogeneration of heat and power back pressure type heat regenerative system | |
| CN204880083U (en) | Cogeneration of heat and power backpressure formula heat regenerative system | |
| CN205638833U (en) | Energy -saving ultra -supercritical steam turbine unit gives water pump system | |
| CN201858130U (en) | Novel frequency conversion driving system of boiler water feeding pump of large power unit of power plant | |
| CN102840617B (en) | Heat-power cogeneration system employing steam heat accumulator | |
| CN105972579A (en) | Energy-saving operation modes for water feeding system of thermal power generator set | |
| CN202597021U (en) | Air compressor waste heat recovery device | |
| CN205260429U (en) | Large unit boiler feed pump system of power plant | |
| CN105698241B (en) | A kind of method of 150MW high back pressures thermal power plant unit circulation pump of heat-supply network operation | |
| CN204783506U (en) | Distributing type can source station pneumatic pump system | |
| CN209761508U (en) | System for driving and reducing station power consumption rate of waste incineration power plant by water feeding pump | |
| CN208154455U (en) | A kind of double shaft feed-water pumps of power plant full capacity | |
| CN209782779U (en) | Heating system with heat supply network circulating pump driving configuration mode | |
| CN202182459U (en) | Circulation line system for booster pump of turbine driven boiler feed water pump and deaerator water tank | |
| CN206668341U (en) | Thermal power plant feed-water pump arrangement | |
| CN204152560U (en) | Circulating power station Steam Turbine Driven feed-water pump | |
| CN202056858U (en) | Boiler steam-driven water supply system | |
| CN203257491U (en) | Circulating water system of thermal generator set | |
| CN211778074U (en) | High-speed motor direct-drive turbine vacuum unit | |
| CN205315057U (en) | Cogeneration black soy sauce steam turbine | |
| CN104912765A (en) | Steam-driven pump system of distributed energy station | |
| CN203515985U (en) | Arrangement structure of pneumatic water supply pump set | |
| CN104989470B (en) | A kind of thermal power plant small turbine cascaded utilization of energy system and method | |
| CN212428970U (en) | High-position wet-cooling steam turbine generator unit residual pressure utilization power generation system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |