CN214010013U - Use one-flow condenser at high-order steam turbine set of arranging - Google Patents
Use one-flow condenser at high-order steam turbine set of arranging Download PDFInfo
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- CN214010013U CN214010013U CN202023165584.8U CN202023165584U CN214010013U CN 214010013 U CN214010013 U CN 214010013U CN 202023165584 U CN202023165584 U CN 202023165584U CN 214010013 U CN214010013 U CN 214010013U
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Abstract
The utility model provides an use and arrange an STREAMING condenser of turboset at high-order, relates to condenser technical field. The steam turbine set aims at solving the problems that the heat displacement is caused by a long steam exhaust pipeline in the existing steam turbine set, and the steam exhaust of a low-pressure cylinder in the steam turbine set impacts a condenser cooling pipe bundle when the steam turbine set operates. A throat circular compensation joint is connected with a long exhaust pipeline, the relative expansion displacement between a condenser and the long exhaust pipeline is compensated, and a fixed supporting seat is adopted at the bottom of the condenser. Compared with a rectangular compensation joint adopted by a conventional unit, the circular compensation joint has better strength, and compensates for thermal displacement caused by a long exhaust pipeline, a plurality of rows of cooling tube bundle anti-scouring baffle pipes are arranged above the condenser cooling tubes, and the cooling tube bundle anti-scouring baffle pipes are used for preventing low-pressure cylinder exhaust from impacting the condenser cooling tube bundles, so that the effect of protecting the cooling tube bundles is achieved. The utility model is suitable for a condenser technical field.
Description
Technical Field
The utility model relates to a condenser technical field, concretely relates to use an in-flow condenser at high-order steam turbine unit of arranging.
Background
In existing power plants, the condenser is an important auxiliary device of the steam turbine set. The condenser has the main function of establishing important auxiliary equipment with a certain vacuum degree for the steam exhaust port of the steam turbine by continuously condensing the exhaust steam of the low-pressure cylinder of the steam turbine. The condenser with excellent performance can not only lead the unit to operate stably and reliably, but also improve the economy of the unit.
The conventional large-scale steam turbine set adopts an arrangement mode that a steam turbine is arranged on a steam turbine platform and has the elevation of about 12.6 meters, the steam turbine adopts a lower steam exhaust mode, and a steam exhaust port of a low pressure cylinder is connected with a throat interface of a condenser.
With the technical update of domestic thermal power generating units, certain high-capacity turbosets adopt a new arrangement mode. The high-level turbine arrangement is realized in a 60 ten thousand grade steam turbine unit, the high-level turbine arrangement is that the steam turbine unit is arranged at a position close to a steam outlet of a boiler and approximately arranged at an elevation of 50 meters, and a condenser is arranged at a position of 0 meter due to the factor of a circulating water pipeline. The steam outlet of the low-pressure cylinder of the steam turbine is connected with the condenser through two long steam exhaust pipelines.
In summary, the thermal displacement caused by the long exhaust pipe in the existing steam turbine set, and when the steam turbine set is in operation, the exhaust of the low-pressure cylinder in the steam turbine set has the problem of impact on the cooling pipe bundle of the condenser.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a solve the heat displacement that long exhaust steam pipe brought among the current turbine set to when the turbine set was moved, the low pressure cylinder steam extraction in the turbine set had the problem of impact to condenser cooling tube bank, and provided an application at the high-order first-class condenser who arranges the turbine set.
The utility model relates to an one-flow condenser applied to a high-position steam turbine unit, which comprises a condenser low-pressure steam side shell, a condenser high-pressure steam side shell, a throat circular compensation joint, a communicated water chamber, a front water chamber, a rear water chamber, a cooling tube bundle anti-scouring baffle pipe, a cooling tube, a hot well communicating pipe and a condensed water collector;
the middle part of one end of a low-pressure steam side shell of the condenser is communicated with the middle part of one end of a high-pressure steam side shell of the condenser through a middle water chamber, the other end of the low-pressure steam side shell of the condenser is provided with a front water chamber, the front water chamber is communicated with the middle water chamber through a cooling pipe, the other end of the high-pressure steam side shell of the condenser is provided with a rear water chamber, the rear water chamber is communicated with the middle water chamber through a cooling pipe, the inside of the low-pressure steam side shell of the condenser is provided with a cooling pipe, the upper part of the cooling pipe is provided with n rows of cooling pipe bundle anti-scouring baffle pipes, n is a positive integer, the cooling pipe bundle anti-scouring baffle pipes are arranged on an opening of a middle supporting pipe plate, the upper surfaces of the low-pressure steam side shell of the condenser and the high-pressure steam side shell of the condenser are respectively provided with a throat circular compensation joint, the lower part of one end of the low-pressure steam side shell of the condenser is communicated with a heat well joint pipe, a condensed water collector is arranged on the lower surface of the high-pressure steam side shell of the condenser;
furthermore, the number n of the tube rows of the anti-scouring baffle tubes of the cooling tube bundle is more than or equal to 3 and less than or equal to 5;
furthermore, the condensed water collector is communicated with the interior of the high-pressure steam side shell of the condenser;
furthermore, the four corners of the lower surfaces of the low-pressure steam side shell and the high-pressure steam side shell of the condenser are respectively provided with a fixed supporting seat;
furthermore, a gap is arranged between the anti-scouring baffle pipe of the cooling pipe bundle and the cooling pipe;
furthermore, the low-pressure steam side shell of the condenser and the high-pressure steam side shell of the condenser are symmetrically arranged along the axis of the steam turbine set;
further, when the device is operated, the exhaust steam of the low-pressure cylinder of the steam turbine is respectively discharged into the high-pressure steam side shell of the condenser and the low-pressure steam side shell of the condenser through the long exhaust steam pipeline, and circulating cooling water enters the low-pressure side cooling pipe from the cooling water port of the front water chamber to exchange heat with the exhaust steam of the low-pressure cylinder. Circulating cooling water subjected to superheat exchange in the low-pressure steam side shell of the condenser enters the communicated water chamber, then enters the high-pressure side cooling pipe from the communicated water chamber, is subjected to heat exchange with exhaust steam of a low-pressure cylinder of the high-pressure steam side shell of the condenser, and finally flows out of the condenser through a circulating water outlet of the rear water chamber;
the low-pressure steam side exhaust condensate water is collected into the high-pressure steam side shell hot well through the condenser hot well communicating pipe, and the mixed condensate water enters the condensate collector and is discharged out of the condenser from the interface of the condensate collector.
Compared with the prior art, the utility model following beneficial effect has:
the utility model overcomes prior art's shortcoming adopts the circular compensation festival of throat and long exhaust pipe to be connected, and the relative expansion displacement between compensation condenser and the long exhaust pipe adopts fixed supporting seat bottom the condenser. Compared with a rectangular compensation joint adopted by a conventional unit, the circular compensation joint has better strength, compensates thermal displacement caused by a long exhaust pipeline, improves the heat utilization amount, arranges a plurality of rows of cooling tube bundles anti-scouring baffle pipes above the cooling tubes of the condenser, and prevents low-pressure cylinder exhaust steam from impacting the cooling tube bundles of the condenser, thereby playing a role in protecting the cooling tube bundles.
Drawings
Fig. 1 is a front view of an in-flow condenser applied to a high-mounted steam turbine set according to the present invention;
fig. 2 is a top view of an in-flow condenser applied to a high-mounted steam turbine set according to the present invention;
fig. 3 is a side view of an in-flow condenser used in a high-mounted steam turbine set according to the present invention.
Detailed Description
The first embodiment is as follows: the first-flow condenser applied to a high-position steam turbine set according to the present embodiment is described with reference to fig. 1 to 3, and includes a condenser low-pressure steam side shell 1, a condenser high-pressure steam side shell 2, a throat circular compensation joint 3, a communicating water chamber 4, a front water chamber 6, a rear water chamber 7, a cooling tube bundle anti-scouring baffle pipe 8, a cooling pipe 9, a hot well communicating pipe 10 and a condensed water collector 11;
the middle part of one end of a low-pressure steam side shell 1 of the condenser is communicated with the middle part of one end of a high-pressure steam side shell 2 of the condenser through a middle water chamber 4, the other end of the low-pressure steam side shell 1 of the condenser is provided with a front water chamber 6, the front water chamber 6 is communicated with the middle water chamber through a cooling pipe 9, the other end of the high-pressure steam side shell 2 of the condenser is provided with a rear water chamber 7, the rear water chamber 7 is communicated with the middle water chamber through the cooling pipe 9, the cooling pipe 9 is arranged in the low-pressure steam side shell 1 of the condenser, the upper part of the cooling pipe 9 is provided with n rows of cooling pipe bundle anti-scouring baffle pipes 8, n is a positive integer, the cooling pipe bundle anti-scouring baffle pipes 8 are arranged on an opening of a middle supporting pipe plate, the upper surfaces of the low-pressure steam side shell 1 of the condenser and the high-pressure steam side shell 2 of the condenser are respectively provided with a throat circular compensating joint 3, and the lower part of one end of the low-pressure steam side shell 1 of the condenser is communicated with a heat well through a communicating pipe 10, the condenser is communicated with the lower part of one end of the high-pressure steam side shell 2 of the condenser, and a condensed water collector 11 is arranged on the lower surface of the high-pressure steam side shell 2 of the condenser;
in the specific embodiment, when the equipment runs, the exhaust steam of the low-pressure cylinder of the steam turbine is respectively discharged into the high-pressure steam side shell 1 and the low-pressure steam side shell 2 of the condenser through the long exhaust steam pipelines, and the circulating cooling water enters the low-pressure side cooling pipe 9 from the cooling water port of the front water chamber 6 to exchange heat with the exhaust steam of the low-pressure cylinder. Circulating cooling water subjected to superheat exchange in the low-pressure steam side shell 2 of the condenser enters the communicated water chamber 4, then enters the high-pressure side cooling pipe 9 from the communicated water chamber 4, is subjected to heat exchange with low-pressure cylinder exhaust steam of the high-pressure steam side shell 2 of the condenser, and finally flows out of the condenser through a circulating water outlet of the rear water chamber 7;
the low-pressure steam side exhaust condensate water is converged into the high-pressure steam side shell hot well through a condenser hot well communicating pipe, the mixed condensate water enters a condensate collector 11, and then is discharged out of the condenser from an interface of the condensate collector 11;
the condenser is an one-flow type condenser, namely the condenser is arranged along the axis direction of the steam turbine, compared with a conventional unit, a communicating pipeline of a rear water chamber is omitted, the water resistance of the condenser is effectively reduced, and the arrangement space of the condenser is reduced.
The second embodiment is as follows: the present embodiment will be described with reference to fig. 1, which is a further limitation of the condenser according to the first embodiment, and the first embodiment is applied to a flow condenser for a high-mounted steam turbine set, wherein the number of rows n of the anti-scouring baffle pipes 8 of the cooling pipe bundle is not less than 3 and not more than 5;
this embodiment adopts and arranges a plurality of rows of cooling tube bank scour prevention fender pipes above the condenser cooling tube, and row cooling tube bank scour prevention fender pipe is used for preventing that low pressure cylinder steam extraction from producing the impact to condenser cooling tube bank, plays the effect of protection cooling tube bank.
The third concrete implementation mode: the present embodiment will be described with reference to fig. 1, and is further limited to the condenser described in the first embodiment, and the present embodiment is applied to a flow condenser for a high-mounted turbine unit, and the condensed water collector 11 is provided to communicate with the inside of the high-pressure steam side casing 2 of the condenser.
The fourth concrete implementation mode: the present embodiment will be described with reference to fig. 1, which is a further limitation of the condenser according to the first embodiment, and the first embodiment is applied to a steam condenser for a high-mounted steam turbine set, wherein four corners of the lower surfaces of a low-pressure steam side casing 1 and a high-pressure steam side casing 2 of the condenser are respectively provided with a fixed support base 5;
according to the specific embodiment, the four corners of the lower surfaces of the condenser low-pressure steam side shell 1 and the condenser high-pressure steam side shell 2 are respectively provided with the fixed supporting seat 5, so that the stability of the device in operation is improved.
The fifth concrete implementation mode: the present embodiment will be described with reference to fig. 1, which is a further limitation of the condenser according to the second embodiment, and the first-flow condenser according to the present embodiment, which is applied to a high-mounted turbine unit, is configured such that a gap is provided between the cooling tube bundle erosion prevention tubes 8 and the cooling tubes 9.
The sixth specific implementation mode: the present embodiment will be described with reference to fig. 1, which is a further limitation of the condenser according to the first embodiment, and the first embodiment is applied to a flow condenser in which a turbine unit is arranged at a high position, and the condenser low-pressure steam side casing 1 and the condenser high-pressure steam side casing 2 are arranged symmetrically along the axis of the turbine unit.
Principle of operation
When the device is operated, the exhaust steam of the low-pressure cylinder of the steam turbine is respectively discharged into the high-pressure steam side shell 1 and the low-pressure steam side shell 2 of the condenser through long exhaust pipelines, and circulating cooling water enters the low-pressure side cooling pipe 9 from the cooling water port of the front water chamber 6 to exchange heat with the exhaust steam of the low-pressure cylinder. Circulating cooling water subjected to superheat exchange in the low-pressure steam side shell 2 of the condenser enters the communicated water chamber 4, then enters the high-pressure side cooling pipe 9 from the communicated water chamber 4, is subjected to heat exchange with low-pressure cylinder exhaust steam of the high-pressure steam side shell 2 of the condenser, and finally flows out of the condenser through a circulating water outlet of the rear water chamber 7;
the low-pressure steam side exhaust condensate water is collected into the high-pressure steam side shell hot well through the condenser hot well communicating pipe, the mixed condensate water enters the condensate water collector 11, and then the condensate water is discharged out of the condenser from the interface of the condensate water collector 11.
Claims (6)
1. The utility model provides an use one-flow condenser at high-order steam turbine unit of arranging which characterized in that: the device comprises a condenser low-pressure steam side shell (1), a condenser high-pressure steam side shell (2), a throat circular compensation joint (3), a communicated water chamber (4), a front water chamber (6), a rear water chamber (7), a cooling tube bundle anti-scouring baffle pipe (8), a cooling pipe (9), a heat well communicating pipe (10) and a condensed water collector (11);
the middle part of one end of a low-pressure steam side shell (1) of the condenser is communicated with the middle part of one end of a high-pressure steam side shell (2) of the condenser through a communicated water chamber (4), the other end of the low-pressure steam side shell (1) of the condenser is provided with a front water chamber (6), the front water chamber (6) is communicated with a middle water chamber through a cooling pipe (9), the other end of the high-pressure steam side shell (2) of the condenser is provided with a rear water chamber (7), the rear water chamber (7) is communicated with the middle water chamber through the cooling pipe (9), the cooling pipe (9) is arranged in the low-pressure steam side shell (1) of the condenser, the upper part of the cooling pipe (9) is provided with n rows of cooling pipe bundle anti-scouring baffle pipes (8), n is a positive integer, the cooling pipe bundle anti-scouring baffle pipes (8) are arranged on an opening of a middle supporting pipe plate, the upper surfaces of the low-pressure steam side shell (1) of, the lower part of one end of the low-pressure steam side shell (1) of the condenser is communicated with the lower part of one end of the high-pressure steam side shell (2) of the condenser through a hot well communicating pipe (10), and a condensed water collector (11) is arranged on the lower surface of the high-pressure steam side shell (2) of the condenser.
2. The flow condenser applied to a high-level steam turbine set according to claim 1, wherein: the number n of the tube rows of the anti-scouring baffle tubes (8) of the cooling tube bundle is more than or equal to 3 and less than or equal to 5.
3. The flow condenser applied to a high-level steam turbine set according to claim 1, wherein: the condensed water collector (11) is communicated with the inside of the high-pressure steam side shell (2) of the condenser.
4. The flow condenser applied to a high-level steam turbine set according to claim 1, wherein: and the four corners of the lower surfaces of the condenser low-pressure steam side shell (1) and the condenser high-pressure steam side shell (2) are respectively provided with a fixed supporting seat (5).
5. The flow condenser applied to a high-level steam turbine set according to claim 2, wherein: a gap is arranged between the anti-scouring baffle pipe (8) of the cooling pipe bundle and the cooling pipe (9).
6. The flow condenser applied to a high-level steam turbine set according to claim 1, wherein: the low-pressure steam side shell (1) and the high-pressure steam side shell (2) of the condenser are symmetrically arranged along the axis of the steam turbine unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023165584.8U CN214010013U (en) | 2020-12-24 | 2020-12-24 | Use one-flow condenser at high-order steam turbine set of arranging |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023165584.8U CN214010013U (en) | 2020-12-24 | 2020-12-24 | Use one-flow condenser at high-order steam turbine set of arranging |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214010013U true CN214010013U (en) | 2021-08-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023165584.8U Active CN214010013U (en) | 2020-12-24 | 2020-12-24 | Use one-flow condenser at high-order steam turbine set of arranging |
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| Country | Link |
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| CN (1) | CN214010013U (en) |
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