CN213815568U - Water supply system for multi-module reactor nuclear power unit evaporator - Google Patents
Water supply system for multi-module reactor nuclear power unit evaporator Download PDFInfo
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- CN213815568U CN213815568U CN202022715932.8U CN202022715932U CN213815568U CN 213815568 U CN213815568 U CN 213815568U CN 202022715932 U CN202022715932 U CN 202022715932U CN 213815568 U CN213815568 U CN 213815568U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
Abstract
The utility model discloses a system of multi-module reactor nuclear power unit evaporimeter feedwater, this system are used for controlling unit start-up process, including multi-module reactor (21), evaporimeter water supply female pipe (14), water feed pump group export female pipe (22), oxygen-eliminating device (8), condensate pump export female pipe (5) and condenser (1). The utility model discloses a many module reactor nuclear power unit, water supply system adopt the mode of header system, control the water supply of every modular reactor through the regulating valve group, can satisfy the regulation of evaporimeter water supply pressure, flow, temperature.
Description
Technical Field
The utility model belongs to the technical field of the nuclear power, concretely relates to system of multi-module reactor nuclear power unit evaporimeter feedwater.
Background
At present, a 200MW high-temperature gas cooled reactor demonstration project adopting a modular design is adopted, each module comprises a water feeding pump and a row of high-pressure heaters, although 3 water feeding pumps are arranged, the dynamic standby of the water feeding pumps cannot be realized, and the switching of the water feeding pumps needs to be completed by shutdown. According to the current design, if a 600MW high-temperature gas cooled reactor nuclear power plant is to be built, 6 feed pumps and 6 rows of high-pressure heaters are needed, and the design system is complex, difficult to arrange, complex to control, high in manufacturing cost, poor in operation safety, poor in operation stability and poor in operation economy.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a system of multimode reactor nuclear power unit evaporimeter feedwater to the design of starting stopping the system of piling to multimode nuclear power unit.
In order to achieve the above purpose, the utility model adopts the following technical scheme to realize:
a system for feeding water to an evaporator of a nuclear power unit of a multi-module reactor comprises the multi-module reactor, an evaporator water feeding main pipe, a water feeding pump set outlet main pipe, a deaerator, a condenser outlet main pipe and a condenser; wherein the content of the first and second substances,
the multi-module reactor consists of at least 2 reactors, the first reactor and the second reactor are two representatives of the multi-module reactor, and other reactors in the multi-module reactor are completely the same as the first reactor and the second reactor;
the first reactor comprises a first water supply control valve group and a first evaporator, and the first water supply control valve group has the functions of controlling the water supply quantity of the first evaporator and cutting off the water supply of the first evaporator and the evaporator water supply main pipe;
the second reactor comprises a second water supply control valve group and a second evaporator, and the second water supply control valve group has the functions of controlling the water supply quantity of the second evaporator and cutting off the water supply of the second evaporator and the evaporator water supply main pipe; three outlets of the condenser are respectively connected with inlets of the first condensate pump, the second condensate pump and the third condensate pump, and outlets of the first condensate pump, the second condensate pump and the third condensate pump are respectively connected with three inlets of a condensate pump outlet main pipe.
The utility model discloses further improvement lies in, two exports of the female pipe of pump export connect respectively in the entry of first low pressure feed water heater, second low pressure feed water heater, and first low pressure feed water heater, second low pressure feed water heater's export connects respectively in two entries of oxygen-eliminating device.
The utility model discloses further improvement lies in, and the entry at first feed water pump package, second feed water pump package, third feed water pump package is connected respectively in the three export of oxygen-eliminating device, and the export of first feed water pump package, second feed water pump package, third feed water pump package is connected respectively in the three entry of the female pipe of feed water pump package export.
The utility model discloses further improvement lies in, two exports of the female pipe of feed pump group export connect respectively in first high pressure feed water heater, second high pressure feed water heater's entry, and first high pressure feed water heater, second high pressure feed water heater's export connect respectively in two entries of the female pipe of evaporimeter feed water.
The utility model discloses further improvement lies in, two exports of the female pipe of evaporimeter feedwater connect respectively in the entry of first feedwater valves, second feedwater valves, and the export of first feedwater valves, second feedwater valves connects respectively in the entry of first evaporimeter and second evaporimeter.
The utility model discloses further improvement lies in, and first pump, second congeal pump, third congeal the pump identical on function and status, is equipped with for dual-purpose one at unit full load operating mode.
The utility model discloses further improvement lies in that first feed pump group, second feed pump group, third feed pump group are the same completely in function and status, are two-purpose one in unit full load operation operating mode and are equipped with.
The utility model discloses a further improvement lies in, each reactor evaporator keeps the same feedwater temperature in the multimode reactor always.
Compared with the prior art, the utility model discloses following advantage has:
the utility model provides a pair of system of many module reactor nuclear power generating set evaporimeter feedwater, this system compares with the system that uses usually at present and has following several obvious advantages in the aspect:
(1) meet the requirements of functions
The water supply system of the multi-module reactor nuclear power unit adopts a main pipe system mode, controls the water supply of each module reactor through the regulating valve group, and can meet the regulation of the water supply pressure, flow and temperature of the evaporator;
(2) can realize the on-line switching of the water feeding pump
When the unit is in operation, the three water supply pumps realize two purposes, one standby, and when any one operating water supply pump fails, the standby water supply pump can be immediately started to operate, so that undisturbed switching can be realized;
(3) simple system, convenient arrangement and low cost
Aiming at a plurality of reactors, 2 rows of water supply systems are configured, and 1 reactor starting and stopping loop is configured for each reactor, so that the system is simplified greatly, and the arrangement is convenient and the manufacturing cost is low.
Drawings
Fig. 1 is a block diagram of a system for supplying water to an evaporator of a nuclear power plant of a multi-module reactor of the present invention.
Description of reference numerals:
1. the system comprises a condenser, 2, a first condensate pump, 3, a second condensate pump, 4, a third condensate pump, 5, a condensate pump outlet main pipe, 6, a first low-pressure heater, 7, a second low-pressure heater, 8, a deaerator, 9, a first water feed pump group, 10, a second water feed pump group, 11, a third water feed pump group, 12, a first high-pressure heater, 13, a second high-pressure heater, 14, an evaporator water feed main pipe, 15, a first water feed control valve group, 16, a first evaporator, 17, a first reactor, 18, a water feed control valve group, 19, a second evaporator, 20, a second reactor, 21, a multi-module reactor, 22 and a water feed pump group outlet main pipe.
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
As shown in fig. 1, the utility model provides a system for multi-module reactor nuclear power generating set evaporator feed water, which comprises a multi-module reactor 21, an evaporator feed water main pipe 14, a feed pump set outlet main pipe 22, a deaerator 8, a condensing pump outlet main pipe 5 and a condenser 1; wherein, the multi-module reactor 21 is composed of at least 2 reactors, the first reactor 17 and the second reactor 20 are two representatives of the multi-module reactor 21, and other reactors in the multi-module reactor 21 are completely the same as the first reactor 17 and the second reactor 20; the first reactor 17 comprises a first water supply control valve group 15 and a first evaporator 16, wherein the first water supply control valve group 15 has the functions of controlling the water supply quantity of the first evaporator 16 and cutting off the water supply of the first evaporator 16 and the evaporator water supply main pipe 14; the first reactor 20 comprises a second water supply control valve group 18 and a second evaporator 19, and the second water supply control valve group 18 has the functions of controlling the water supply quantity of the second evaporator 19 and cutting off the water supply of the second evaporator 19 and the evaporator water supply main pipe 14; three outlets of the condenser 1 are respectively connected with inlets of the first condensate pump 2, the second condensate pump 3 and the third condensate pump 4, and outlets of the first condensate pump 2, the second condensate pump 3 and the third condensate pump 4 are respectively connected with three inlets of the condensate pump outlet main pipe 5.
Wherein, two exports of pump export female pipe 5 connect respectively in the entry of first low pressure heater 6, second low pressure heater 7, and the export of first low pressure heater 6, second low pressure heater 7 connects respectively in two entrances of oxygen-eliminating device 8. Three outlets of the deaerator 8 are respectively connected with inlets of the first water feed pump group 9, the second water feed pump group 10 and the third water feed pump group 11, and outlets of the first water feed pump group 9, the second water feed pump group 10 and the third water feed pump group 11 are respectively connected with three inlets of a water feed pump group outlet main pipe 22. Two outlets of the water feed pump set outlet main pipe 22 are respectively connected with inlets of the first high-pressure heater 12 and the second high-pressure heater 13, and outlets of the first high-pressure heater 12 and the second high-pressure heater 13 are respectively connected with two inlets of the evaporator water feed main pipe 14. Two outlets of the evaporator water supply main pipe 14 are respectively connected to inlets of the first water supply control valve group 15 and the second water supply control valve group 18, and outlets of the first water supply control valve group 15 and the second water supply control valve group 18 are respectively connected to inlets of the first evaporator 16 and the second evaporator 19. The first condensate pump 2, the second condensate pump 3 and the third condensate pump 4 are completely identical in function and position, and are dual-purpose and standby under the full-load operation condition of the unit, for convenience of description, the first condensate pump 2 is taken as an example for description, and the first condensate pump 2 can be replaced by the second condensate pump 3 and the third condensate pump 4. The first water feed pump group 9, the second water feed pump group 10 and the third water feed pump group 11 are identical in function and status, and are dual-purpose and one-standby under the full-load operation condition of the unit, and for convenience of description, the first water feed pump group 9 is taken as an example for description, and the first water feed pump group 9 can be replaced by the second water feed pump group 10 and the third water feed pump group 11.
The utility model provides a pair of system of many module reactor nuclear power generating set evaporimeter feedwater, unit start-up process includes following step:
in the initial stage of unit starting, water is injected into the condenser 1 to reach the normal water level, the second condensate pump 2 is started, and water is fed into the deaerator 8 to reach the normal water level through the condensate pump outlet main pipe 5, the first low-pressure heater 6 and the second low-pressure heater 7;
starting a first water feed pump set 9, injecting water to an evaporator water feed main pipe 14 through a water feed pump set outlet main pipe 22, a first high-pressure heater 12 and a second high-pressure heater 13, and improving the outlet pressure of the first water feed pump set 9, so that the pressure of the water feed pump set outlet main pipe 22 is higher than the pressure of a first reactor 17 under a rated operation condition;
water is injected into the first evaporator 16 through the first water supply control valve group 15, the water injection speed is controlled by the second water supply control valve group 15, after the first evaporator 16 is filled with water, water circulation of a second loop of the first reactor 17 is established, the water circulation pressure is controlled by the first water supply control valve group 15, and the pressure requirement of the first reactor 17 is met;
and water is injected into the second evaporator 19 through the second water supply control valve group 18, the water injection speed is controlled by the second water supply control valve group 18, after the second evaporator 19 is filled with water, water circulation of a second loop of the second reactor 20 is established, the water circulation pressure is controlled by the second water supply control valve group 18, and the pressure requirement of the second reactor 20 is met.
When the load of the unit reaches more than 40% of full load, at least 2 of the first condensate pump 2, the second condensate pump 3 and the third condensate pump 4 are operated, one is standby, and the standby condensate pump is put into operation after one of the two operated condensate pumps fails; when the load of the unit reaches more than 40% of full load, at least 2 of the first water feed pump group 9, the second water feed pump group 10 and the third water feed pump group 11 operate, one pump is standby, and the standby water feed pump group is put into operation after one of the two operating water feed pump groups fails; each reactor evaporator in the multi-module reactor 21 maintains the same feedwater temperature at all times.
Claims (8)
1. A multi-module reactor nuclear power unit evaporator water supply system is characterized by comprising a multi-module reactor (21), an evaporator water supply main pipe (14), a water supply pump set outlet main pipe (22), a deaerator (8), a condensate pump outlet main pipe (5) and a condenser (1); wherein the content of the first and second substances,
the multi-module reactor (21) consists of at least 2 reactors, the first reactor (17) and the second reactor (20) are two representatives of the multi-module reactor (21), and other reactors in the multi-module reactor (21) are completely the same as the first reactor (17) and the second reactor (20);
the first reactor (17) comprises a first water supply control valve group (15) and a first evaporator (16), and the first water supply control valve group (15) has the functions of controlling the water supply quantity of the first evaporator (16) and cutting off the water supply of the first evaporator (16) and the evaporator water supply main pipe (14);
the second reactor (20) comprises a second water supply control valve group (18) and a second evaporator (19), and the second water supply control valve group (18) has the functions of controlling the water supply quantity of the second evaporator (19) and cutting off the water supply of the second evaporator (19) and the evaporator water supply main pipe (14); three outlets of the condenser (1) are respectively connected with inlets of the first condensate pump (2), the second condensate pump (3) and the third condensate pump (4), and outlets of the first condensate pump (2), the second condensate pump (3) and the third condensate pump (4) are respectively connected with three inlets of a condensate pump outlet main pipe (5).
2. The system for water feeding of the nuclear power generating set evaporator of the multi-module reactor as claimed in claim 1, wherein two outlets of the pump outlet main pipe (5) are respectively connected with inlets of the first low-pressure heater (6) and the second low-pressure heater (7), and outlets of the first low-pressure heater (6) and the second low-pressure heater (7) are respectively connected with two inlets of the deaerator (8).
3. The multi-module reactor nuclear power generating unit evaporator water supply system according to claim 2, wherein three outlets of the deaerator (8) are respectively connected to inlets of the first water feed pump group (9), the second water feed pump group (10) and the third water feed pump group (11), and outlets of the first water feed pump group (9), the second water feed pump group (10) and the third water feed pump group (11) are respectively connected to three inlets of a water feed pump group outlet main pipe (22).
4. The system for the water supply of the nuclear power generating unit evaporator of the multi-module reactor as claimed in claim 3, wherein two outlets of the outlet main pipe (22) of the water supply pump group are respectively connected with the inlets of the first high-pressure heater (12) and the second high-pressure heater (13), and the outlets of the first high-pressure heater (12) and the second high-pressure heater (13) are respectively connected with two inlets of the water supply main pipe (14) of the evaporator.
5. The system for the feedwater of the evaporator of the multi-module nuclear power plant according to claim 4, wherein two outlets of the evaporator feedwater header (14) are connected to the inlets of the first and second feedwater control valve sets (15, 18), respectively.
6. The system for feedwater in an evaporator of a multi-module nuclear power plant according to claim 5, wherein the outlets of the first and second feedwater control valve sets (15, 18) are connected to the inlets of the first and second evaporators (16, 19), respectively.
7. The system for the water supply of the evaporator of the multi-module reactor nuclear power generating unit according to any one of claims 1 to 6, wherein the first condensate pump (2), the second condensate pump (3) and the third condensate pump (4) are completely identical in function and position, and are used for two purposes under the full-load operation condition of the unit.
8. The system for the water supply of the evaporator of the multi-module reactor nuclear power generating unit according to any one of claims 3 to 6, characterized in that the first water supply pump group (9), the second water supply pump group (10) and the third water supply pump group (11) are completely identical in function and status, and are used for two purposes under the full-load operation condition of the unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022715932.8U CN213815568U (en) | 2020-11-20 | 2020-11-20 | Water supply system for multi-module reactor nuclear power unit evaporator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022715932.8U CN213815568U (en) | 2020-11-20 | 2020-11-20 | Water supply system for multi-module reactor nuclear power unit evaporator |
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| Publication Number | Publication Date |
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| CN213815568U true CN213815568U (en) | 2021-07-27 |
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| CN202022715932.8U Active CN213815568U (en) | 2020-11-20 | 2020-11-20 | Water supply system for multi-module reactor nuclear power unit evaporator |
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