CN213901218U - Heat supply starting structure of 200MW steam turbine - Google Patents
Heat supply starting structure of 200MW steam turbine Download PDFInfo
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- CN213901218U CN213901218U CN202021886598.6U CN202021886598U CN213901218U CN 213901218 U CN213901218 U CN 213901218U CN 202021886598 U CN202021886598 U CN 202021886598U CN 213901218 U CN213901218 U CN 213901218U
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Abstract
The utility model relates to a steam turbine field specifically discloses a 200MW steam turbine heat supply start structure, including the condenser, the lower surface mounting of condenser has the inlet tube, the right side of condenser is provided with the heat supply network heater, install the female pipe of air through the air hose between heat supply network heater and the condenser, the vacuum pump is installed to one side of the female pipe of air, install the stop valve on the air hose between heat supply network heater, the condenser. The vacuum pump is used for quickly pumping air in a heat supply network heater and a heating steam extraction pipeline before a unit is started, and is beneficial to the flow of steam in the pipeline and the condensation in the heater, a main pipe at the inlet of a heat supply network drain pump is connected with a straight-through condenser, so that the drainage of the heat supply network heater during starting is facilitated, each heat supply network heater is connected with an air pipe and an air main pipe, the air main pipe is connected with the vacuum pump, the air pipe is connected with the condenser, and valves are respectively additionally arranged, so that the adjustment of operators is facilitated.
Description
Technical Field
The utility model relates to a steam turbine field specifically is a 200MW steam turbine heat supply start structure.
Background
After a steam turbine is transformed into a back pressure type heat supply unit, steam does not enter a low pressure cylinder, main steam passes through a high pressure main steam valve and a high pressure adjusting steam valve, a high pressure steam guide pipe enters a high pressure cylinder to do work, and other medium pressure steam exhausts are all used for heat supply, so that the heat supply steam extraction quantity of the unit is improved, the heat supply capacity of the unit is expanded, after the steam turbine is transformed for heat supply, in the starting process of the unit, the steam inlet quantity is reduced, the medium pressure steam exhausts are blocked, the tail of the medium pressure cylinder generates blast overtemperature, shafting vibration is caused, the unit cannot be normally started, after multiple starting and rushing, the unit needs to be quickly connected after rushing to 3000r/min, the constant speed can not be kept for testing, hidden dangers are buried for the safe operation of the unit, and rushing is stopped due to vibration protection in the multiple starting processes, so that the service life of the unit is influenced to a certain extent.
However, after the steam turbine is subjected to heat supply transformation, in the starting process of the unit, the steam inlet amount is reduced, medium-pressure steam exhaust is blocked, and accordingly blast overtemperature is generated at the tail of the medium-pressure cylinder, shafting vibration is caused, and the unit cannot be normally started. Accordingly, a heat supply starting structure for a 200MW steam turbine is provided by those skilled in the art to solve the problems set forth in the background art.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a 200MW steam turbine heat supply starts structure to solve the problem that proposes in the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme:
the utility model provides a 200MW steam turbine heat supply start-up structure, includes the condenser, the lower surface mounting of condenser has the inlet tube, one side of inlet tube is provided with the outlet pipe, the lower surface mounting who is located the condenser between outlet pipe and the inlet tube has the heat well pipe, the right side of condenser is provided with the heat supply network heater, install the female pipe of air through the air hose between heat supply network heater and the condenser, the vacuum pump is installed to one side of the female pipe of air, install the stop valve on the air hose between heat supply network heater, the condenser.
As a further aspect of the present invention: the heat well pipe is communicated with the condenser, and the water inlet pipe is communicated with the condenser.
As a further aspect of the present invention: the vacuum pump is communicated with the air main pipe, and the heat supply network heater is communicated with the air main pipe.
As a further aspect of the present invention: and an exhaust pipe interface is arranged on the upper surface of the condenser, and a condensed water outlet is arranged on one side of the heat well pipe.
As a further aspect of the present invention: the exhaust pipe interface is communicated with the condenser, and the condensed water outlet is communicated with the hot well pipe.
As a further aspect of the present invention: the internally mounted of condenser has the condensation tube bank, one side of condensation tube bank is located the top of inlet tube and is provided with the water inlet room, and the top that the opposite side of condensation tube bank is located the outlet pipe is provided with the delivery port room.
As a further aspect of the present invention: the condensation tube bundle is communicated with the water inlet chamber and the water outlet chamber, and the water outlet pipe is communicated with the condenser.
Compared with the prior art, the beneficial effects of the utility model are that: the small vacuum pump is additionally arranged at the head station of the heat supply network, and is used for quickly pumping air in a heat supply network heater and a heating steam extraction pipeline before a unit is started, so that the flowing of steam in the pipeline and the condensation in the heater are facilitated, the main pipe at the inlet of the heat supply network drain pump is connected with the straight condenser all the way, the drainage and the discharge of the heat supply network heater during the starting are facilitated, each heat supply network heater is connected with the air main pipe all the way, the air main pipe is connected with the vacuum pump all the way, the condenser all the way is connected with the condenser, and valves are additionally arranged respectively, so that the adjustment of an operator is facilitated.
Drawings
FIG. 1 is a schematic structural diagram of a heat supply starting structure of a 200MW steam turbine;
FIG. 2 is a cross-sectional view of a condenser in a 200MW steam turbine heat supply start-up configuration;
FIG. 3 is a schematic diagram of the operation of the device in the heat supply starting structure of the 200MW steam turbine.
In the figure: 1. a condenser; 2. a water inlet pipe; 3. a water outlet pipe; 4. a heat well pipe; 5. an exhaust pipe interface; 6. a condensed water outlet; 7. a water inlet chamber; 8. a water outlet chamber; 9. a condenser tube bundle; 10. a vacuum pump; 11. a heat supply network heater; 12. an air main pipe; 13. and (5) stopping the valve.
Detailed Description
Please refer to fig. 1-3, in an embodiment of the present invention, a 200MW steam turbine heat supply starting structure, including condenser 1, the lower surface mounting of condenser 1 has inlet tube 2, one side of inlet tube 2 is provided with outlet pipe 3, the lower surface mounting that lies in condenser 1 between outlet pipe 3 and the inlet tube 2 has heat well pipe 4, the right side of condenser 1 is provided with heat supply network heater 11, install the female pipe of air 12 through the air pipe between heat supply network heater 11 and condenser 1, vacuum pump 10 is installed to one side of the female pipe of air 12, heat supply network heater 11, install stop valve 13 on the air pipe between condenser 1.
In fig. 1, 2, 3: inlet tube 2 and condenser 1 through connection, hot well pipe 4 and condenser 1 through connection, vacuum pump 10 and the female pipe 12 through connection of air, heat supply network heater 11 and the female pipe 12 through connection of air, the last surface mounting of condenser 1 has blast pipe interface 5, condensate outlet 6 is installed to one side of hot well pipe 4, blast pipe interface 5 and condenser 1 through connection, condensate outlet 6 and hot well pipe 4 through connection, the internally mounted of condenser 1 has condenser bank 9, one side of condenser bank 9 is located the top of inlet tube 2 and is provided with water inlet chamber 7, and the opposite side of condenser bank 9 is located the top of outlet pipe 3 and is provided with delivery port chamber 8, condenser bank 9 and water inlet chamber 7, delivery port chamber 8 through connection, outlet pipe 3 and condenser 1 through connection.
In fig. 1, 2: checking the vacuum conditions of the heat supply network heater 11 and the pipeline, when the vacuum of the condenser 1 is close to the vacuum of the heat supply network heater 11, starting the heat supply network heater 11 to the throat air door of the condenser and the heat supply network drain water to the door of the condenser, paying attention to the vacuum change, if no heat supply network is newly added with a small vacuum pump, considering starting the heat supply network heater to the throat air door of the condenser and the heat supply network drain water to the door of the condenser in advance, and establishing the vacuum together with the host air system.
The utility model discloses a theory of operation is: each heating network heater 11 is additionally provided with a vacuumizing pipeline before an exhaust valve is started, a stop valve 13 is arranged before branch pipelines are connected into an air main pipe 12, so that operators can selectively put in the vacuumizing pipeline according to needs, the air main pipe 12 can be directly connected into a condensation throat, and a main valve is additionally arranged before the air main pipe is connected into a condenser 1 and is used for plugging a plate when a unit is in pure condensation working condition operation so as to prevent vacuum leakage; when a vacuum pump 10 which is not used in an idle state is available, the air main pipe 12 can be provided with a branch, a vacuum pump 10 is added for quickly vacuumizing a heat supply network heater 11 before a unit is started, the normal water circulation of a first pipe network of the heat supply network is checked, a vacuumizing door of the heat supply network heater 11 is opened, an exhaust pipe interface 5 at the top of a condenser 1 is closed, a small vacuum pump valve newly added to the first station is opened, a condenser valve of a newly-added vacuumizing pipeline is closed, an electric door of a heating steam extraction and heat supply network is closed, a steam extraction pipeline draining door is opened, after draining is finished, the draining is closed, draining doors of the heat supply network heaters 11 and draining ground drain doors are closed, a manual door of the heat supply network draining and heat condenser 1 is closed, the vacuum pump 10 of the heat supply network first station is started again, and the heat supply network heaters 11 and steam inlet pipelines of the heat supply network first station are vacuumized.
The above-mentioned, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (7)
1. The utility model provides a 200MW steam turbine heat supply start-up structure, includes condenser (1), its characterized in that, the lower surface mounting of condenser (1) has inlet tube (2), one side of inlet tube (2) is provided with outlet pipe (3), the lower surface mounting that is located condenser (1) between outlet pipe (3) and inlet tube (2) has hot well pipe (4), the right side of condenser (1) is provided with heat supply network heater (11), install female pipe of air (12) through the air hose between heat supply network heater (11) and condenser (1), vacuum pump (10) are installed to one side of female pipe of air (12), install on the air hose between heat supply network heater (11), condenser (1) stop valve (13).
2. A 200MW steam turbine heating starting structure according to claim 1, wherein the heat well pipe (4) is connected to the condenser (1) and the water inlet pipe (2) is connected to the condenser (1).
3. A 200MW steam turbine heating starting structure according to claim 1, wherein the vacuum pump (10) is connected to the air main (12) and the heating network heater (11) is connected to the air main (12).
4. A 200MW steam turbine heating starting structure according to claim 1, characterized in that the upper surface of the condenser (1) is provided with an exhaust pipe joint (5), and one side of the hot well pipe (4) is provided with a condensed water outlet (6).
5. A heating starting structure of a 200MW steam turbine according to claim 4, characterized in that the exhaust pipe connector (5) is connected to the condenser (1) and the condensed water outlet (6) is connected to the hot well pipe (4).
6. A 200MW steam turbine heat supply starting structure according to claim 1, characterized in that the condenser (1) is internally provided with a condenser bundle (9), one side of the condenser bundle (9) is provided with a water inlet chamber (7) above the water inlet pipe (2), and the other side of the condenser bundle (9) is provided with a water outlet chamber (8) above the water outlet pipe (3).
7. The heating starting structure of the 200MW steam turbine according to claim 6, wherein the condenser tube bundle (9) is connected with the water inlet chamber (7) and the water outlet chamber (8) in a penetrating way, and the water outlet pipe (3) is connected with the condenser (1) in a penetrating way.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021886598.6U CN213901218U (en) | 2020-09-02 | 2020-09-02 | Heat supply starting structure of 200MW steam turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021886598.6U CN213901218U (en) | 2020-09-02 | 2020-09-02 | Heat supply starting structure of 200MW steam turbine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213901218U true CN213901218U (en) | 2021-08-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021886598.6U Active CN213901218U (en) | 2020-09-02 | 2020-09-02 | Heat supply starting structure of 200MW steam turbine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213901218U (en) |
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2020
- 2020-09-02 CN CN202021886598.6U patent/CN213901218U/en active Active
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