CN207539888U - A kind of peak regulation system using fuse salt heat accumulation - Google Patents
A kind of peak regulation system using fuse salt heat accumulation Download PDFInfo
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- CN207539888U CN207539888U CN201721378942.9U CN201721378942U CN207539888U CN 207539888 U CN207539888 U CN 207539888U CN 201721378942 U CN201721378942 U CN 201721378942U CN 207539888 U CN207539888 U CN 207539888U
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Abstract
The utility model discloses a kind of peak regulation systems using fuse salt heat accumulation,The outlet of feed pump is connected with the heat absorption side entrance of water inlet and No. 3 high-pressure heaters for bypassing high-pressure heater,The heat absorption side outlet of water outlet and No. 3 high-pressure heaters for bypassing high-pressure heater is connected with the economizer entrance of coal-burning boiler,The outlet of high-temperature fusion salt cellar is connected with bypassing the heat release side entrance of high-pressure heater,The heat release side outlet of bypass high-pressure heater is connected with the entrance of watery fusion salt cellar,The outlet of watery fusion salt cellar is connected with the fuse salt entrance of fuse salt heater,The fuse salt outlet of fuse salt heater is connected with the entrance of high-temperature fusion salt cellar,Reheated steam hot side conduit is connected with the entrance of intermediate pressure cylinder and the steam inlet of fuse salt heater,The steam (vapor) outlet of fuse salt heater is connected with the heat release side entrance of No. 3 high-pressure heaters,The system can realize the peak regulation of Thermal generation unit,And the response time is short.
Description
Technical field
The utility model belongs to thermal power generating technology field, is related to a kind of peak regulation system, and in particular to a kind of to utilize melting
The peak regulation system of salt heat accumulation.
Background technology
With the increasingly increase of the rapid growth of the new energy ratio such as wind energy, solar energy and peak-valley difference in China's power grid,
Thermal generation unit participates in the number of peak regulation and the requirement to its quality greatly improves, while country is to the energy consumption of coal unit
It is required that it also increasingly improves.Power grid constantly requires unit quick response load variations, the operation and control of current Thermal generation unit
The mode of system has been difficult meet demand.
On the one hand, it is that boiler side portions under heat face is in the principal element of load responding speed to restrict Thermal generation unit
Back-end ductwork low heat loads area, the heating surface in low heat loads area is very slow to the variation response speed of water and coal amount, such as saves
Coal device etc.；On the other hand, in order to improve the flexibility of unit operation, the frequency modulation peak modulation capacity of unit is improved, has and utilizes oxygen-eliminating device
With condenser hotwell water storage potentiality, the short time changes changes unit instantaneous power to meet the requirements from hot well to condensing capacity,
But oxygen-eliminating device and condenser storage capacity and safe operation water level are limited to, the problems such as existence range is not wide, and the response time is long, shadow
Ring peak-frequency regulation ability.
Utility model content
It is a kind of using fuse salt heat accumulation the purpose of the utility model is to overcome the shortcomings that the above-mentioned prior art, providing
Peak regulation system, which can realize the peak regulation of Thermal generation unit, and the response time is short, and peak regulation range is wide.
In order to achieve the above objectives, the peak regulation system described in the utility model using fuse salt heat accumulation includes feed pump, side
Road high-pressure heater, No. 3 high-pressure heaters, the economizer of coal-burning boiler, high-temperature fusion salt cellar, bypass high-pressure heater, low temperature
Melt salt cellar, fuse salt heater, reheated steam hot side conduit and intermediate pressure cylinder；
The outlet of feed pump is connected with the heat absorption side entrance of water inlet and No. 3 high-pressure heaters for bypassing high-pressure heater
It is logical, bypass the economizer entrance phase of the water outlet of high-pressure heater and the heat absorption side outlet and coal-burning boiler of No. 3 high-pressure heaters
Connection, the outlet of high-temperature fusion salt cellar are connected with bypassing the heat release side entrance of high-pressure heater, bypass putting for high-pressure heater
Hot side outlet is connected with the entrance of watery fusion salt cellar, and the outlet of watery fusion salt cellar and the fuse salt of fuse salt heater enter
Mouth is connected, and the fuse salt outlet of fuse salt heater is connected with the entrance of high-temperature fusion salt cellar, reheated steam hot side conduit
It is connected with the entrance of intermediate pressure cylinder and the steam inlet of fuse salt heater, the steam (vapor) outlet of fuse salt heater and No. 3 high pressures
The heat release side entrance of heater is connected.
The heat absorption side outlet of No. 3 high-pressure heaters is through No. 2 high-pressure heaters and the province of No. 1 high-pressure heater and coal-burning boiler
Coal device entrance is connected.
Reheated steam hot side conduit is connected by the first valve with the steam inlet of fuse salt heater.
The fuse salt outlet of fuse salt heater is connected by the second valve with the entrance of high-temperature fusion salt cellar.
The outlet of watery fusion salt cellar is connected by third valve with the fuse salt entrance of fuse salt heater.
The outlet of high-temperature fusion salt cellar is connected with bypassing the heat release side entrance of high-pressure heater by the 4th valve.
The heat release side outlet of bypass high-pressure heater is connected by the 5th valve with the entrance of watery fusion salt cellar.
The heat absorption side outlet of bypass high-pressure heater is connected by the 6th valve with the economizer entrance of coal-burning boiler.
The outlet of feed pump is connected by the 7th valve with bypassing the heat absorption side entrance of high-pressure heater.
The utility model has the advantages that：
Peak regulation system described in the utility model using fuse salt heat accumulation is in concrete operations, by controlling reheated steam
And the flow path of feed pump water outlet water, when network load reduces, reheated steam is divided into two-way, wherein entering all the way
Into intermediate pressure cylinder, another way enters the low temperature molten salt exported in fuse salt heater to watery fusion salt cellar and heats,
Then it is then stored into high-temperature fusion salt cellar, so as to reduce the amount for entering the reheated steam in intermediate pressure cylinder, reduces intermediate pressure cylinder
The quick reduction of Thermal generation unit output power is realized in acting；It is when network load increases, reheated steam hot side conduit is defeated
The steam gone out is all introduced into intermediate pressure cylinder, while is two-way by the moisture of feed pump output, wherein all the way through No. 3 hyperbaric heatings
It is entered in the economizer of coal-burning boiler after device heating, another way is exported in high-pressure heater is bypassed by high-temperature fusion salt cellar
High-temperature fusion salt heating after enter in the economizer of coal-burning boiler, so as to increase working medium at the economizer exit of coal-burning boiler
Temperature, improve the output power of Thermal generation unit.The utility model realizes heat with the heat-storage medium of fuse salt simultaneously
Storage and release, so as to which Thermal generation unit be made to have the characteristics that the reaction time is short, peak regulation range is wide.
Further, the utility model realizes the adjusting of Thermal generation unit output power by adjusting the folding of each valve,
It is simple, convenient.
Description of the drawings
Fig. 1 is the structure diagram of the utility model.
Wherein, 1 it is intermediate pressure cylinder, 2 be high-temperature fusion salt cellar, 3 be watery fusion salt cellar, 4 be fuse salt heater, 5 is No. 3
High-pressure heater, 6 be No. 2 high-pressure heaters, 7 be No. 1 high-pressure heater, 8 be bypass high-pressure heater, 9 be the first valve, 10
It is third valve for the second valve, 11,12 be the 4th valve, 13 be the 5th valve, 14 be the 6th valve, 15 is the 7th valve.
Specific embodiment
The utility model is described in further detail below in conjunction with the accompanying drawings：
With reference to figure 1, the peak regulation system described in the utility model using fuse salt heat accumulation includes feed pump, bypass high pressure adds
Hot 8, No. 3 high-pressure heaters 5 of device, the economizer of coal-burning boiler, high-temperature fusion salt cellar 2, bypass high-pressure heater 8, watery fusion
Salt cellar 3, fuse salt heater 4, reheated steam hot side conduit and intermediate pressure cylinder 1；The outlet of feed pump and bypass high-pressure heater 8
The heat absorption side entrance of water inlet and No. 3 high-pressure heaters 5 is connected, and bypasses the water outlet and No. 3 hyperbaric heatings of high-pressure heater 8
The heat absorption side outlet of device 5 is connected with the economizer entrance of coal-burning boiler, outlet and the bypass hyperbaric heating of high-temperature fusion salt cellar 2
The heat release side entrance of device 8 is connected, and the heat release side outlet of bypass high-pressure heater 8 is connected with the entrance of watery fusion salt cellar 3,
The outlet of watery fusion salt cellar 3 is connected with the fuse salt entrance of fuse salt heater 4, and the fuse salt of fuse salt heater 4 goes out
Mouth is connected with the entrance of high-temperature fusion salt cellar 2, reheated steam hot side conduit and the entrance of intermediate pressure cylinder 1 and fuse salt heater 4
Steam inlet be connected, the steam (vapor) outlet of fuse salt heater 4 is connected with the heat release side entrance of No. 3 high-pressure heaters 5.
The heat absorption side outlet of No. 3 high-pressure heaters 5 is through No. 2 high-pressure heaters 6 and No. 1 high-pressure heater 7 and coal-burning boiler
Economizer entrance be connected；Reheated steam hot side conduit is connected by the first valve 9 with the steam inlet of fuse salt heater 4
It is logical；The fuse salt outlet of fuse salt heater 4 is connected by the second valve 10 with the entrance of high-temperature fusion salt cellar 2；Low temperature melts
The outlet for melting salt cellar 3 is connected by third valve 11 with the fuse salt entrance of fuse salt heater 4；High-temperature fusion salt cellar 2
It exports and is connected with bypassing the heat release side entrance of high-pressure heater 8 by the 4th valve 12；Bypass the cold side of high-pressure heater 8
Outlet is connected by the 5th valve 13 with the entrance of watery fusion salt cellar 3；The heat absorption side outlet of bypass high-pressure heater 8 passes through
6th valve 14 is connected with the economizer entrance of coal-burning boiler；The outlet of feed pump is added by the 7th valve 15 and bypass high pressure
The heat absorption side entrance of hot device 8 is connected.
The specific operation process of the utility model is：
When network load increases, then increase the flow of the water of feed pump output, and open the 4th valve 12, the 5th valve
13rd, the 6th valve 14 and the 7th valve 15 close the first valve 9, the second valve 10 and third valve 11, reheated steam end tube
The reheated steam of road output is all introduced into intermediate pressure cylinder 1, and the high-temperature fusion salt that high-temperature fusion salt cellar 2 exports adds in bypass high pressure
It is entered in watery fusion salt cellar 3 after the cold side heat release of hot device 8；The moisture of feed pump output is two-way, wherein, enter all the way
To the heat absorbing side heat absorption of bypass high-pressure heater 8, then enter back into the economizer of coal-burning boiler, another way is through No. 3 high pressures
Heater 5 is entered in the economizer of coal-burning boiler, the amount for entering water in No. 3 high-pressure heaters 5 is reduced, so as to improve fire coal
The economizer exit temperature of boiler, and squeeze high pressure cylinder steam extraction, increase the main steam flow of high pressure cylinder acting, improve coal fired power generation
The output power of unit；
When network load reduces, then the first valve 9, the second valve 10 and third valve 11 are opened, close the 4th valve
12nd, the 5th valve 13, the 6th valve 14 and the 7th valve 15, heat absorbing side of the water through No. 3 high-pressure heaters 5 of feed pump output are inhaled
It is entered after heat in the economizer of coal-burning boiler；The reheated steam of reheated steam hot side conduit output is divided into two-way, wherein all the way
It entering in fuse salt heater 4, the low temperature molten salt that watery fusion salt cellar 3 exports is entered in fuse salt heater 4, and
High-temperature fusion salt is heated to be by reheated steam in fuse salt heater 4, then into high-temperature fusion salt cellar 2, fuse salt
The steam that heater 4 exports is entered in No. 3 high-pressure heaters 5；Another way is entered in intermediate pressure cylinder 1, so as to be lowered into
The flow of reheated steam in intermediate pressure cylinder 1, and then reduce the output power of Thermal generation unit.
To sum up, the utility model can realize the depth peak modulation capacity of Thermal generation unit and quick climbing capacity, have
The advantage that response time is fast, peak regulation range is big.
Claims (9)
1. a kind of peak regulation system using fuse salt heat accumulation, which is characterized in that including feed pump, bypass high-pressure heater (8), 3
Number high-pressure heater (5), the economizer of coal-burning boiler, high-temperature fusion salt cellar (2), watery fusion salt cellar (3), fuse salt heater
(4), reheated steam hot side conduit and intermediate pressure cylinder (1)；
The outlet of feed pump is connected with the water inlet of bypass high-pressure heater (8) and the heat absorption side entrance of No. 3 high-pressure heaters (5)
It is logical, the economizer of absorb heat side outlet and the coal-burning boiler of the water outlet of bypass high-pressure heater (8) and No. 3 high-pressure heaters (5)
Entrance is connected, and the outlet of high-temperature fusion salt cellar (2) is connected with the heat release side entrance of bypass high-pressure heater (8), and bypass is high
Pressure heater (8) heat release side outlet be connected with the entrance of watery fusion salt cellar (3), the outlet of watery fusion salt cellar (3) and
The fuse salt entrance of fuse salt heater (4) is connected, fuse salt outlet and the high-temperature fusion salt cellar of fuse salt heater (4)
(2) entrance is connected, reheated steam hot side conduit and the entrance of intermediate pressure cylinder (1) and the steam inlet of fuse salt heater (4)
It is connected, the steam (vapor) outlet of fuse salt heater (4) is connected with the heat release side entrance of No. 3 high-pressure heaters (5).
2. the peak regulation system according to claim 1 using fuse salt heat accumulation, which is characterized in that No. 3 high-pressure heaters (5)
Heat absorption side outlet be connected through No. 2 high-pressure heaters (6) and No. 1 high-pressure heater (7) with the economizer entrance of coal-burning boiler.
3. the peak regulation system according to claim 2 using fuse salt heat accumulation, which is characterized in that reheated steam hot side conduit
It is connected by the first valve (9) with the steam inlet of fuse salt heater (4).
4. the peak regulation system according to claim 3 using fuse salt heat accumulation, which is characterized in that fuse salt heater (4)
Fuse salt outlet be connected by the second valve (10) with the entrance of high-temperature fusion salt cellar (2).
5. the peak regulation system according to claim 4 using fuse salt heat accumulation, which is characterized in that watery fusion salt cellar (3)
Outlet be connected by third valve (11) with the fuse salt entrance of fuse salt heater (4).
6. the peak regulation system according to claim 5 using fuse salt heat accumulation, which is characterized in that high-temperature fusion salt cellar (2)
Outlet with bypass high-pressure heater (8) heat release side entrance be connected by the 4th valve (12).
7. the peak regulation system according to claim 6 using fuse salt heat accumulation, which is characterized in that bypass high-pressure heater
(8) heat release side outlet is connected by the 5th valve (13) with the entrance of watery fusion salt cellar (3).
8. the peak regulation system according to claim 7 using fuse salt heat accumulation, which is characterized in that bypass high-pressure heater
(8) heat absorption side outlet is connected by the 6th valve (14) with the economizer entrance of coal-burning boiler.
9. the peak regulation system according to claim 8 using fuse salt heat accumulation, which is characterized in that the outlet of feed pump passes through
7th valve (15) is connected with the heat absorption side entrance of bypass high-pressure heater (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721378942.9U CN207539888U (en) | 2017-10-24 | 2017-10-24 | A kind of peak regulation system using fuse salt heat accumulation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721378942.9U CN207539888U (en) | 2017-10-24 | 2017-10-24 | A kind of peak regulation system using fuse salt heat accumulation |
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| Publication Number | Publication Date |
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| CN207539888U true CN207539888U (en) | 2018-06-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201721378942.9U Active CN207539888U (en) | 2017-10-24 | 2017-10-24 | A kind of peak regulation system using fuse salt heat accumulation |
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2017
- 2017-10-24 CN CN201721378942.9U patent/CN207539888U/en active Active
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