CN203550740U - Power station condenser throat part with flow guide device - Google Patents
Power station condenser throat part with flow guide device Download PDFInfo
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- CN203550740U CN203550740U CN201320617975.XU CN201320617975U CN203550740U CN 203550740 U CN203550740 U CN 203550740U CN 201320617975 U CN201320617975 U CN 201320617975U CN 203550740 U CN203550740 U CN 203550740U
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- condenser
- throat
- throat part
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Abstract
The utility model relates to the field of mechanical equipment, in particular to a power station condenser throat part with a flow guide device, and particularly relates to some large and medium-sized power station condensers. The power station condenser throat part comprises a throat part casing, a low-pressure heater and flow guide plates, wherein the throat part casing is in a four-prism-table shape, the upper side of the throat part casing is provided with an inlet cross section, the inlet cross section is connected with a steam discharging opening of a steam turbine, the lower side of the throat part casing is provided with an outlet cross section, the outlet cross section is connected with a lower casing of a condenser, the low-pressure heater and the flow guide plates are arranged in the throat part casing, and two sides of the low-pressure heater arranged in the throat part casing are symmetrically provided with the flow guide plates. The technical scheme provided by the utility model has the following beneficial effects that after the flow guide plates are additionally arranged in the power station condenser throat part, the heat transfer effect of the condenser can be improved, so the operation vacuum degree and the circulation heat efficiency of the condenser are improved, and in addition, the service life of a condenser cooling pipe can also be prolonged.
Description
Technical field
The utility model relates to plant equipment field, and particularly a kind of condenser of power station throat that has guiding device, relates in particular to some big-and-middle-sized condenser of power station.
Background technology
The throat of condenser of power station also claims upper shell or the neck-connecting part of condenser, holds the exhaust casing of steam turbine on it, under connect the lower house of condenser, in the lower house of condenser, arranged a large amount of heat-exchanging tube bundles.Along with condenser of power station is progressively to large scale development, modern big-and-middle-sized condenser of power station is often furnished with low-pressure heater and corresponding extraction line, low voltage bypass Desuperheating and decompressing device for steam and some draining systems etc. in its throat, wherein inner low pressure heater is bulky, is to cause throat's vapour locking and the inhomogeneous capital equipment of throat's exit flow field.Because steam turbine last stage steam discharge will arrive condenser throat entrance through 90 ° of above large turnings, speed has presented uneven distribution, in addition labyrinth in aforesaid condenser throat, therefore at throat's exit flow field of condenser, present a kind of Complex Flows state that includes a large amount of swirling flows, VELOCITY DISTRIBUTION is extremely inhomogeneous: the steam discharge flow velocity at the steam discharge flow velocity of the peripheral endwall region of condenser much larger than interior zone, even can produce vortex at the steam discharge of interior zone.It can make the heat load distribution inequality of the cold heat-exchanging tube bundle of condenser, thereby heat-transfer temperature difference of condensor is reduced, cause turbine discharge mouth vacuum to decline, cause thermal efficiency of cycle to reduce, the irrational distribution in turbine discharge flow field also can shorten the service life of cooling water tube bank.Conventionally, the average speed of condenser of power station throat steam flow is about 50m/s left and right, and tube bank outer rim small part cooling tube bears local high velocity vapor erosion more than 100m/s possibly.
Utility model content
The purpose of this utility model is in order to overcome above-mentioned deficiency, and a kind of condenser throat that has guide functions is provided, and can improve the uniformity of the Flow Field Distribution of throat's outlet.
For solving the problems of the technologies described above, embodiment of the present utility model provides a kind of condenser of power station throat that has guiding device, comprise the throat's housing, low-pressure heater, the deflector that are truncated rectangular pyramids shape, the upside of described throat housing is provided with import cross section, described import cross section is connected with turbine discharge mouth, the downside of throat's housing is provided with outlet, described outlet is connected with condenser lower house, in described throat housing, be provided with low-pressure heater and deflector, in described throat housing, the bilateral symmetry of low-pressure heater is furnished with deflector.
As preferably, the profile of described deflector be in planar structure, curved-surface structure and airfoil structure any one.
As preferably, the deflector that the described bilateral symmetry at low-pressure heater is arranged can be one group or two groups.
As preferably, the described bilateral symmetry at low-pressure heater is furnished with two groups of deflectors, and described deflector is the combination of any two kinds of plate shapes in surface plate, curved slab or aerofoil profile plate.
The beneficial effect of technique scheme of the present utility model is as follows: set up deflector in condenser of power station throat after, it can promote the heat-transfer effect of condenser, thereby improve the operation vacuum of condenser and the thermal efficiency of circulation, can also extend in addition the service life of Cooling Tubes of Condenser.
Accompanying drawing explanation
Fig. 1 is that the master of a kind of condenser of power station throat that has guiding device of embodiment of the present utility model looks schematic diagram;
Fig. 2 to Fig. 8 is the layout schematic diagram of the deflector embodiment of throat of Fig. 1.Fig. 2, one group of surface plate and a suite panel; Fig. 3, one group of surface plate; Fig. 4, two groups of surface plates; Fig. 5, a suite panel; Fig. 6, two suite panels; Fig. 7, one group of aerofoil profile plate; Fig. 8, two groups of aerofoil profile plates.
The specific embodiment
For making the technical problems to be solved in the utility model, technical scheme and advantage clearer, be described in detail below in conjunction with the accompanying drawings and the specific embodiments.
The utility model provides a kind of condenser of power station throat that has guiding device for existing deficiency, as shown in Figure 1, comprise the throat's housing 1, low-pressure heater 4, the deflector 5 that are truncated rectangular pyramids shape, the upside of described throat housing 1 is provided with import cross section 2, described import cross section 2 is connected with turbine discharge mouth, the downside of throat's housing 1 is provided with outlet 3, described outlet 3 is connected with condenser lower house, in described throat housing 1, be provided with low-pressure heater 4 and deflector 5, in the bilateral symmetry of described throat housing 1 interior low-pressure heater (4), be furnished with deflector 5.
As shown in Fig. 2 to Fig. 8, the profile of described deflector be in planar structure, curved-surface structure and airfoil structure any one.
The deflector 5 that the described bilateral symmetry at low-pressure heater 5 is arranged can be one group or two groups.
The described bilateral symmetry at low-pressure heater 5 is furnished with two groups of deflectors 5, and described deflector 5 is the combination of any two kinds of plate shapes in surface plate, curved slab or aerofoil profile plate.
The utility model is realized with the following method,
Steam turbine and condenser are when operation, from turbine discharge mouth, entering steam discharge of the present utility model flows through the utility model inner structure part and deflector, in throat, go out interruption-forming distribution flow field comparatively uniformly, the heat-exchanging tube bundle district and the pipe side cooling water that enter condenser lower house carry out condensing into gradually water after heat exchange.Due to through the steam of water conservancy diversion throat, enter tube bank district flow field more even, tube bank district heat load distribution is more reasonable, make the heat exchange area of condenser obtain more effective utilization, thereby improved the heat-transfer effect of condenser, vacuum and the thermal power generator thermal efficiency of cycle of turbine discharge mouth have been promoted, can also reduce the percussion to Cooling Tubes of Condenser, extend the service life of cooling tube.
The above is preferred embodiment of the present utility model; should be understood that; for those skilled in the art; do not departing under the prerequisite of principle described in the utility model; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (4)
1. one kind has the condenser of power station throat of guiding device, comprise the throat's housing (1) that is truncated rectangular pyramids shape, low-pressure heater (4), deflector (5), the upside of described throat housing (1) is provided with import cross section (2), described import cross section (2) is connected with turbine discharge mouth, the downside of throat's housing (1) is provided with outlet (3), described outlet (3) is connected with condenser lower house, in described throat housing (1), be provided with low-pressure heater (4) and deflector (5), it is characterized in that, in described throat housing (1), the bilateral symmetry of low-pressure heater (4) is furnished with deflector (5).
2. a kind of condenser of power station throat that has guiding device according to claim 1, is characterized in that, the profile of described deflector be in planar structure, curved-surface structure and airfoil structure any one.
3. a kind of condenser of power station throat that has guiding device according to claim 1 and 2, is characterized in that, the deflector (5) that the described bilateral symmetry at low-pressure heater (5) is arranged can be one group or two groups.
4. a kind of condenser of power station throat that has guiding device according to claim 3, it is characterized in that, the described bilateral symmetry at low-pressure heater (5) is furnished with two groups of deflectors (5), and described deflector (5) is the combination of any two kinds of plate shapes in surface plate, curved slab or aerofoil profile plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320617975.XU CN203550740U (en) | 2013-10-08 | 2013-10-08 | Power station condenser throat part with flow guide device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320617975.XU CN203550740U (en) | 2013-10-08 | 2013-10-08 | Power station condenser throat part with flow guide device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203550740U true CN203550740U (en) | 2014-04-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320617975.XU Expired - Fee Related CN203550740U (en) | 2013-10-08 | 2013-10-08 | Power station condenser throat part with flow guide device |
Country Status (1)
| Country | Link |
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| CN (1) | CN203550740U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104930906A (en) * | 2015-03-17 | 2015-09-23 | 黄洁 | Condenser throat flow field optimizing effect testing and transforming method |
| CN105545385A (en) * | 2016-01-14 | 2016-05-04 | 大唐(北京)能源管理有限公司 | Exhaust steam access system and exhaust steam access method for small steam turbine |
| CN105547005A (en) * | 2016-01-14 | 2016-05-04 | 大唐(北京)能源管理有限公司 | Large-size thin-wall connector butt welding structure and method |
| CN107524483A (en) * | 2017-06-05 | 2017-12-29 | 联合瑞升（北京）科技有限公司 | A kind of exhaust steam in steam turbine deriving structure and method |
| CN109883217A (en) * | 2019-03-28 | 2019-06-14 | 上海电力学院 | The condenser throat guiding device of uniform exit flow field |
-
2013
- 2013-10-08 CN CN201320617975.XU patent/CN203550740U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104930906A (en) * | 2015-03-17 | 2015-09-23 | 黄洁 | Condenser throat flow field optimizing effect testing and transforming method |
| CN105545385A (en) * | 2016-01-14 | 2016-05-04 | 大唐(北京)能源管理有限公司 | Exhaust steam access system and exhaust steam access method for small steam turbine |
| CN105547005A (en) * | 2016-01-14 | 2016-05-04 | 大唐(北京)能源管理有限公司 | Large-size thin-wall connector butt welding structure and method |
| CN105545385B (en) * | 2016-01-14 | 2024-03-22 | 大唐环境产业集团股份有限公司 | Exhaust steam access system and method of small steam turbine |
| CN107524483A (en) * | 2017-06-05 | 2017-12-29 | 联合瑞升（北京）科技有限公司 | A kind of exhaust steam in steam turbine deriving structure and method |
| CN109883217A (en) * | 2019-03-28 | 2019-06-14 | 上海电力学院 | The condenser throat guiding device of uniform exit flow field |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140416 Termination date: 20151008 |
|
| EXPY | Termination of patent right or utility model |