CN214464457U - Peak regulation system based on steam turbine intermediate pressure cylinder exhaust coupling - Google Patents
Peak regulation system based on steam turbine intermediate pressure cylinder exhaust coupling Download PDFInfo
- Publication number
- CN214464457U CN214464457U CN202120568610.7U CN202120568610U CN214464457U CN 214464457 U CN214464457 U CN 214464457U CN 202120568610 U CN202120568610 U CN 202120568610U CN 214464457 U CN214464457 U CN 214464457U
- Authority
- CN
- China
- Prior art keywords
- pressure cylinder
- conventional unit
- intermediate pressure
- generator set
- steam
- 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
Images
Landscapes
- Engine Equipment That Uses Special Cycles (AREA)
Abstract
The utility model discloses a peak regulation system based on steam turbine intermediate pressure cylinder exhaust coupling, which comprises a first conventional unit generating set (13) and a second conventional unit generating set (14); the first conventional unit system generator set (13) comprises a first intermediate pressure cylinder (7), a first low pressure cylinder (8), a first condensate pump (11) and a first intermediate pressure cylinder steam exhaust control and isolation valve group (1), and the second conventional unit system generator set (14) comprises a second intermediate pressure cylinder (9), a second low pressure cylinder (10), a second condensate pump (12) and a second intermediate pressure cylinder steam exhaust control and isolation valve group (2); the operation method of the system can realize flexible switching between the first conventional unit generator set (13) and the second conventional unit generator set (14). The utility model discloses need not to carry out technological transformation to the boiler side, can promote the degree of depth peak shaving ability of unit, increase the flexibility of unit operation.
Description
Technical Field
The utility model belongs to the technical field of thermal power generation, concretely relates to peak shaving system based on steam turbine intermediate pressure cylinder exhaust coupling.
Background
At present, a unit system operation method is widely adopted in domestic large-capacity thermal power plants, namely, a boiler supplies steam for a steam turbine, and the steam turbine drives a generator to generate electricity, so that an independent power generation unit of the boiler, the steam turbine and the generator is formed. And the power generation units are basically not in transverse connection. The minimum electric load of the existing thermal power generating unit is generally limited to about 30-40% due to the limitation of the minimum stable combustion output of the auxiliary fuel which is not put into the coal-fired boiler, and the safe and continuous operation of the boiler is adversely affected if the minimum electric load is continuously reduced. Chinese patent publication CN109653810A discloses a thermodynamic system with two machines switching operation in one furnace, which is characterized in that a superheated steam and reheated steam bypass and a control valve are added, when one boiler fails, the other boiler is used to drive two steam turbines to generate electricity, at this time, the set has a certain peak shaving capability, but the system is complex in arrangement, low in operation flexibility, and poor in operability in actual operation of a power plant.
In recent years, with the continuous promotion of upgrading and transforming work of thermal power generating units, a thermodynamic system and an operation method capable of realizing coupling connection among high-capacity thermal power generating units are urgently needed to enhance the flexibility of the units adapting to electric load dispatching instructions and improve the deep peak regulation capability of the units.
SUMMERY OF THE UTILITY MODEL
To the problem that exists among the prior art, the utility model provides a peak shaving system based on steam turbine intermediate pressure cylinder exhaust coupling, it need not to carry out technical transformation to the boiler side, can promote the degree of depth peak shaving ability of unit, increases the flexibility of unit operation.
The utility model discloses a realize through following technical scheme:
the peak shaving system based on the steam exhaust coupling of the intermediate pressure cylinder of the steam turbine comprises a first conventional unit generator set and a second conventional unit generator set;
the first conventional unit system generator set comprises a first intermediate pressure cylinder, a first low pressure cylinder, a first condensate pump, a first intermediate pressure cylinder steam exhaust control and isolation valve group, and the second conventional unit system generator set comprises a second intermediate pressure cylinder, a second low pressure cylinder, a second condensate pump, a second intermediate pressure cylinder steam exhaust control and isolation valve group;
a steam exhaust connecting pipe of the intermediate pressure cylinder is connected between a steam exhaust port of a first intermediate pressure cylinder and a steam exhaust port of a second intermediate pressure cylinder of the two turbines, and a control and isolation valve group of the intermediate pressure cylinder steam exhaust connecting pipe is installed on the intermediate pressure cylinder steam exhaust connecting pipe;
a first intermediate pressure cylinder steam exhaust control and isolation valve group is connected between a steam exhaust port of a first intermediate pressure cylinder and a steam inlet of a first low pressure cylinder of the two turbines, and a second intermediate pressure cylinder steam exhaust control and isolation valve group is connected between a steam exhaust port of a second intermediate pressure cylinder and a steam inlet of a second low pressure cylinder;
and a low-pressure water supply connecting pipe is connected between the outlet of the first condensate pump and the outlet of the second condensate pump of the two turbines, and a low-pressure water supply connecting pipe control and isolation valve group is installed on the low-pressure water supply connecting pipe.
The utility model discloses further improvement lies in, first conventional unit system generating set and second conventional unit system generating set's generating capacity is the same, the capacity is equivalent, and equipment type and thermodynamic system design are unanimous.
The utility model discloses further improvement lies in, and the running state of first conventional unit system generating set and second conventional unit system generating set is that two boilers, two steam turbines all are in running state.
The utility model discloses further improvement lies in, and the first intermediate pressure jar exhaust steam of first conventional unit system generating set can get into the second low pressure jar acting of the conventional unit system generating set of second through intermediate pressure jar exhaust steam interconnecting pipe.
The utility model discloses further improvement lies in, and the second intermediate pressure jar exhaust steam of second conventional unit system generating set can get into the first low-pressure cylinder acting of first conventional unit system generating set through intermediate pressure jar exhaust steam interconnecting pipe.
The utility model discloses further improvement lies in, the first condensate pump export condensate water of first conventional unit system generating set gets into the low pressure water supply system of second conventional unit system generating set in order to maintain the oxygen-eliminating device water level stability of second conventional unit system generating set by the low pressure contact pipe that gives water.
The utility model discloses further improvement lies in, the second condensate pump export condensate water of second conventional unit system generating set gets into the low pressure water supply system of first conventional unit system generating set by the low pressure contact pipe that gives water and is in order to maintain the oxygen-eliminating device water level stability of first conventional unit system generating set.
Compared with the prior art, the utility model discloses following profitable technological effect has:
the utility model realizes the switching of the depth peak-shaving operation mode of any unit by additionally arranging the intermediate pressure cylinder steam exhaust connecting pipe and the low pressure water supply connecting pipe; when the unit operates in deep peak regulation, the low-pressure cylinder steam inlet flow is reduced, the low-pressure cylinder work is obviously reduced, and the deep peak regulation capacity of the unit is increased. Utilize the utility model discloses, under the degree of depth peak regulation operating mode, can carry the low pressure jar steam admission volume major part of a unit to another unit low pressure jar, realized that a unit is littleer technique and exerted oneself. The flexibility of the unit adapting to the dispatching electric load instruction is enhanced, the deep peak regulation electricity price income of the power plant is increased, and the production and operation benefits of the power plant are improved.
Drawings
Fig. 1 is a schematic diagram of a thermodynamic system of a peak shaving system based on steam discharge coupling of a steam turbine intermediate pressure cylinder according to an embodiment of the present invention.
Description of reference numerals:
1. a first intermediate pressure cylinder steam exhaust control and isolation valve group, 2, a second intermediate pressure cylinder steam exhaust control and isolation valve group; 3. a control and isolation valve group of the intermediate pressure cylinder exhaust connecting pipe; 4. the intermediate pressure cylinder exhausts the union pipe; 5. a low pressure feed water interconnecting pipe; 6. a low-pressure water supply connecting pipe control and isolation valve group; 7. a first intermediate pressure cylinder; 8. a first low pressure cylinder; 9. a second intermediate pressure cylinder; 10. a second low pressure cylinder; 11. a first condensate pump 12, a second condensate pump; 13. the first conventional unit system generating set, 14, the second conventional unit system generating set.
Detailed Description
The present invention will now be described in further detail with reference to specific embodiments thereof, which are illustrated and not limited by the accompanying drawings.
As shown in fig. 1, the utility model provides a peak shaving system based on steam turbine intermediate pressure cylinder exhaust coupling, including two capacities, equipment type and the first conventional unit system generating set 13 and the second conventional unit system generating set 14 that thermodynamic system is unanimous basically.
The first conventional unit system generator set 13 comprises a first intermediate pressure cylinder 7, a first low pressure cylinder 8, a first condensate pump 11 and a first intermediate pressure cylinder steam exhaust control and isolation valve group 1, and the second conventional unit system generator set 14 comprises a second intermediate pressure cylinder 9, a second low pressure cylinder 10, a second condensate pump 12 and a second intermediate pressure cylinder steam exhaust control and isolation valve group 2; a middle pressure cylinder steam exhaust connecting pipe 4 is connected between a steam exhaust port of a first middle pressure cylinder 7 and a steam exhaust port of a second middle pressure cylinder 9 of the two turbines, and a middle pressure cylinder steam exhaust connecting pipe control and isolation valve group 3 is installed on the middle pressure cylinder steam exhaust connecting pipe 4; a first intermediate pressure cylinder steam exhaust control and isolation valve group 1 is connected between a steam exhaust port of a first intermediate pressure cylinder 7 and a steam inlet of a first low pressure cylinder 8 of the two turbines, and a second intermediate pressure cylinder steam exhaust control and isolation valve group 2 is connected between a steam exhaust port of a second intermediate pressure cylinder 9 and a steam inlet of a second low pressure cylinder 10; a low-pressure water supply connecting pipe 5 is connected between an outlet of a first condensate pump 11 and an outlet of a second condensate pump 12 of the two turbines, and a low-pressure water supply connecting pipe control and isolation valve group 6 is installed on the low-pressure water supply connecting pipe 5.
Preferably, the intermediate pressure cylinder steam exhaust connecting pipe control and isolation valve group 3 is arranged on the intermediate pressure cylinder steam exhaust connecting pipe 4, so that the switching of the deep peak regulation operation mode of a single unit is realized;
preferably, a first intermediate pressure cylinder steam exhaust control and isolation valve group 1 is installed on a medium pressure cylinder steam exhaust pipe of the first conventional unit-made generator set 13, and the valve group can control the steam inlet amount of the first low pressure cylinder 8 and adjust the output force of the first low pressure cylinder 8 of the first conventional unit-made generator set 13;
preferably, a second intermediate pressure cylinder steam exhaust control and isolation valve group 2 is installed on a steam exhaust pipe of an intermediate pressure cylinder of the second conventional unit-made generator set 14, and the valve group can control the steam inlet amount of the second low pressure cylinder 10 and adjust the output force of the second low pressure cylinder 10 of the second conventional unit-made generator set 14;
preferably, a low-pressure water supply connecting pipe control and isolation valve group 6 is arranged on the low-pressure water supply connecting pipe 5 and used for adjusting the low-pressure water supply flow of the two units in the deep peak shaving process and maintaining the stable water level of the deaerator.
The utility model provides an operation method of peak shaver system based on coupling of steam turbine intermediate pressure cylinder exhaust, including following step:
step 1, a first conventional unit-made generator set 13 and a second conventional unit-made generator set 14 run normally, and a first intermediate pressure cylinder steam exhaust control and isolation valve group 1 of the first conventional unit-made generator set 13 is in an open state; the second intermediate pressure cylinder steam exhaust control and isolation valve group 2 of the second conventional unit-system generator set 14 is in an open state; the intermediate pressure cylinder steam exhaust connecting pipe control and isolation valve group 3 of the intermediate pressure cylinder steam exhaust connecting pipe 4 is in a closed state; the low-pressure water supply connecting pipe control and isolation valve group 6 of the low-pressure water supply connecting pipe 5 is in a closed state;
step 2, opening a medium pressure cylinder steam exhaust connecting pipe control and isolation valve group 3 of a medium pressure cylinder steam exhaust connecting pipe 4; the first intermediate pressure cylinder steam exhaust control and isolation valve group 1 of the first conventional unit-system generator set 13 is slowly closed; the low-pressure water supply connecting pipe control and isolation valve group 6 of the low-pressure water supply connecting pipe 5 is slowly opened; maintaining the water level of the deaerator of the first conventional unit generator set 13 to be stable; the deep peak regulation operation of the first conventional unit generator set 13 is realized;
step 3, the intermediate pressure cylinder steam exhaust connecting pipe control and isolation valve group 3 of the intermediate pressure cylinder steam exhaust connecting pipe 4 is kept open; a first intermediate pressure cylinder steam exhaust control and isolation valve group 1 of a first conventional unit-system generator set 13 is slowly opened; the second intermediate pressure cylinder steam exhaust control and the isolating valve group 2 of the second conventional unit-system generator set 14 are slowly closed; the low-pressure water supply connecting pipe control and isolation valve group 6 is kept open; maintaining the water level of the deaerator of the second conventional unit generator set 14 to be stable; and realizing the deep peak shaving operation of the second conventional unit generator set 14.
The above only is the concrete implementation of the preferred embodiment of the present invention, not therefore the limitation of the patent scope of the present invention, all the applications of the equivalent structure or equivalent flow transformation made by the contents of the specification and the drawings or the application to multiple units, or the direct or indirect application in other related technical fields, all the same principles are included in the patent protection scope of the present invention.
Claims (8)
1. The peak shaving system based on the steam exhaust coupling of the intermediate pressure cylinder of the steam turbine is characterized by comprising a first conventional unit generator set (13) and a second conventional unit generator set (14);
the first conventional unit system generator set (13) comprises a first intermediate pressure cylinder (7), a first low pressure cylinder (8), a first condensate pump (11) and a first intermediate pressure cylinder steam exhaust control and isolation valve group (1), and the second conventional unit system generator set (14) comprises a second intermediate pressure cylinder (9), a second low pressure cylinder (10), a second condensate pump (12) and a second intermediate pressure cylinder steam exhaust control and isolation valve group (2);
a middle pressure cylinder steam exhaust connecting pipe (4) is connected between a steam exhaust port of a first middle pressure cylinder (7) and a steam exhaust port of a second middle pressure cylinder (9) of the two turbines, and a middle pressure cylinder steam exhaust connecting pipe control and isolation valve group (3) is installed on the middle pressure cylinder steam exhaust connecting pipe (4);
a first intermediate pressure cylinder steam exhaust control and isolation valve group (1) is connected between a steam exhaust port of a first intermediate pressure cylinder (7) and a steam inlet of a first low pressure cylinder (8) of the two turbines, and a second intermediate pressure cylinder steam exhaust control and isolation valve group (2) is connected between a steam exhaust port of a second intermediate pressure cylinder (9) and a steam inlet of a second low pressure cylinder (10);
a low-pressure water supply connecting pipe (5) is connected between an outlet of a first condensate pump (11) and an outlet of a second condensate pump (12) of the two turbines, and a low-pressure water supply connecting pipe control and isolation valve group (6) is installed on the low-pressure water supply connecting pipe (5).
2. The peaking system based on steam turbine intermediate pressure cylinder exhaust coupling of claim 1, wherein the first conventional unit generator set (13) and the second conventional unit generator set (14) have the same power generation capacity and the same capacity, and the equipment type and the thermodynamic system are designed in the same way.
3. The peak shaving system based on the steam discharge coupling of the steam turbine intermediate pressure cylinder according to claim 1, characterized in that the operation states of the first conventional unit generator set (13) and the second conventional unit generator set (14) are that both the boiler and the steam turbine are in operation.
4. The peak shaving system based on the steam exhaust coupling of the intermediate pressure cylinder of the steam turbine according to claim 1, characterized in that the exhaust steam of the first intermediate pressure cylinder (7) of the first conventional unit generator set (13) can enter the second low pressure cylinder (10) of the second conventional unit generator set (14) to do work through the intermediate pressure cylinder exhaust connecting pipe (4).
5. The peak shaving system based on the steam exhaust coupling of the intermediate pressure cylinder of the steam turbine according to claim 1, characterized in that the exhaust steam of the second intermediate pressure cylinder (9) of the second conventional unit generator set (14) can enter the first low pressure cylinder (8) of the first conventional unit generator set (13) to do work through the intermediate pressure cylinder exhaust connecting pipe (4).
6. The system according to claim 1, wherein the condensate at the outlet of the first condensate pump (11) of the first conventional unit generator set (13) enters the low pressure feed water system of the second conventional unit generator set (14) through the low pressure feed water communication pipe (5) to maintain the deaerator water level of the second conventional unit generator set (14) stable.
7. The system according to claim 1, wherein the condensate at the outlet of the second condensate pump (12) of the second conventional unit generator set (14) enters the low pressure feed water system of the first conventional unit generator set (13) through the low pressure feed water communication pipe (5) to maintain the deaerator water level of the first conventional unit generator set (13) stable.
8. The peaking system based on a steam exhaust coupling of a steam turbine intermediate pressure cylinder according to claim 1, wherein the operation states of the first conventional unit generator set (13) and the second conventional unit generator set (14) can be switched to each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120568610.7U CN214464457U (en) | 2021-03-19 | 2021-03-19 | Peak regulation system based on steam turbine intermediate pressure cylinder exhaust coupling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120568610.7U CN214464457U (en) | 2021-03-19 | 2021-03-19 | Peak regulation system based on steam turbine intermediate pressure cylinder exhaust coupling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214464457U true CN214464457U (en) | 2021-10-22 |
Family
ID=78156746
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120568610.7U Active CN214464457U (en) | 2021-03-19 | 2021-03-19 | Peak regulation system based on steam turbine intermediate pressure cylinder exhaust coupling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214464457U (en) |
-
2021
- 2021-03-19 CN CN202120568610.7U patent/CN214464457U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110701663A (en) | Injection type heat pump exhaust steam recovery heat supply mode and system based on complete thermoelectric decoupling | |
| CN104976671B (en) | Wide-load heat supply energy-saving system of back pressure type small steam turbine driven water feeding pump | |
| CN109854319B (en) | Coupling pressure matching combined cycle steam extraction and heat supply integrated system and operation method thereof | |
| CN109854316B (en) | Combined cycle heat supply and power peak regulation coupling system based on energy cascade utilization and operation method thereof | |
| CN110656991A (en) | Injection gas distribution thermoelectric decoupling mode based on axial thrust balance and reheating balance | |
| CN210509309U (en) | Steam complementary energy utilization coupling steam extraction heat supply system for thermoelectric unit electric power peak regulation | |
| CN106437875A (en) | Thermal power generating unit working medium shunting circulation peak shaving system | |
| CN109869784B (en) | Combined cycle device for steam extraction integration and heat accumulation peak shaving coupling and operation method thereof | |
| CN113431651A (en) | Low-load operation system with one furnace and two machines | |
| CN113175367B (en) | Master control system for improving peak regulation capacity and flexibility of unit and operation method | |
| CN114046186A (en) | High-flexibility high-thermoelectric-ratio composite thermal mass bypass heating system | |
| CN112879110A (en) | Thermodynamic system with one furnace and two machines operating at ultralow load and switching method thereof | |
| CN210088955U (en) | Combined cycle device for steam extraction integration and heat storage peak regulation coupling | |
| CN214464457U (en) | Peak regulation system based on steam turbine intermediate pressure cylinder exhaust coupling | |
| CN218151092U (en) | Thermal power plant steam turbine backpressure steam extraction energy cascade utilization system | |
| CN210179723U (en) | Combined cycle device based on heat supply and electric power peak regulation coupling | |
| CN214660396U (en) | Coupling peak shaving system based on middle row and cooling of middle row among units | |
| CN214464455U (en) | Depth peak regulation system based on thermodynamic system coupling among units | |
| CN214464456U (en) | Coupling peak regulation system based on medium-pressure exhaust and low-pressure steam extraction cooling | |
| CN216554044U (en) | 600MW unit steam-heat output integrated device | |
| CN214464454U (en) | Coupling peak regulation system based on main steam, medium exhaust and steam extraction cooling | |
| CN113431648B (en) | Reheater structure of header reheating system | |
| CN110056402B (en) | Steam complementary energy utilization coupling steam extraction heat supply system and adjusting method | |
| CN210088820U (en) | Combined cycle power peak regulation system based on steam extraction coupling heat storage | |
| CN112901293A (en) | Peak regulation system based on steam turbine intermediate pressure cylinder exhaust coupling and operation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |