CN203248209U - Turbine steam-exhaust guiding plate arranged in mirror-symmetry mode of middle admission and middle exhaust structure - Google Patents
Turbine steam-exhaust guiding plate arranged in mirror-symmetry mode of middle admission and middle exhaust structure Download PDFInfo
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- CN203248209U CN203248209U CN 201320255095 CN201320255095U CN203248209U CN 203248209 U CN203248209 U CN 203248209U CN 201320255095 CN201320255095 CN 201320255095 CN 201320255095 U CN201320255095 U CN 201320255095U CN 203248209 U CN203248209 U CN 203248209U
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Abstract
The utility model relates to a turbine steam-exhaust guiding plate arranged in a mirror-symmetry mode of a middle admission and middle exhaust structure. Due to the fact that steam inside a steam cavity of an existing turbine makes direct contact with the outer wall of an internal cylinder, the internal cylinder deforms due to the temperature difference. The turbine steam-exhaust guiding plate arranged in the mirror-symmetry mode of the middle admission and middle exhaust structure comprises the internal cylinder, an external cylinder and a steam cavity formed between the internal cylinder and the external cylinder. Steam admission channels are formed in the two sides of the steam cavity. A steam exhaust channel is formed in the external cylinder. Two sets of steam-exhaust guiding plate bodies are clamped inside the steam cavity. The steam cavity is limited on the outer sides of the steam-exhaust guiding plate bodies. The steam-exhaust guiding plate bodies are of streamline structures. The outer lateral sides of the steam-exhaust guiding plate bodies are located on the inner sides of the steam admission channels. The inner lateral sides of the steam-exhaust guiding plate bodies are located at the edge of the steam exhaust channel. A guiding plate body is additionally arranged in the steam cavity. A heat preservation layer is formed between the internal cylinder and the inner side wall of the guiding plate body, the contact between the low-energy steam and the outer wall of the internal cylinder is effectively prevented, meanwhile, the deformation, caused by the temperature difference, of the internal cylinder is prevented, the energy loss when the low-energy steam is exhausted can be reduced, and the working efficiency of a turbine is improved.
Description
Technical field
The utility model relates to a kind of thermal power generation association area, is specifically related to advance in a kind of the turbine discharge guide plate that the mirror image of middle row's structure is arranged symmetrically with.
Background technique
The thermoelectricity generating is according to the engineering thermodynamics basic principle, utilize water in the phase transition process of liquid and gaseous state, to have and absorb and the characteristic of release heat energy and the characteristics of the repetitive cycling utilization that can go round and begin again, and steam turbine has the ability that thermal power transfer is become mechanical energy, realize the chemical energy energy transform into heat energy of coal by boiler burning, the circulation system by water and steam is transported to heat energy and realizes in the steam turbine that thermal power transfer becomes mechanical energy again; At last, by realizing that with the coaxial generator that is connected of steam turbine mechanical energy converts electric energy to, satisfy the need for electricity of society.Low pressure steam discharge after the work done enters to be cooled to be condensed into liquid water and to continue behind the vapour condenser and recycles.Thermodynamic cycle device comprises that series connection (or local in parallel) forms boiler, steam turbine set (comprising some high-pressure cylinders, intermediate pressure cylinder and low pressure (LP) cylinder), vapour condenser, low-pressure heater, oxygen-eliminating device, high-pressure heater, condensate pump, the high pressure water pump in thermodynamic cycle loop, and valve miscellaneous.For improving efficiency of thermal cycle, thermal power generation is by the heat regenerative system of drawing gas of design, with extraction opening and the extraction line of steam at different levels by the steam turbine setting, be transported to respectively the surface-type low-pressure heater by the condensing water conduit serial connection, and in the surface-type high-pressure heater by the series connection of high-pressure feed water pipeline, stepped heating is transported to oxygen-eliminating device by condensate pump with the water of condensation in the vapour condenser, and be transported to boiler by the high-pressure feed water of high pressure water pump after with deoxygenation in the oxygen-eliminating device, further improve the entering water temp of boiler, the fuel consumption of saving boiler.In the heat regenerative system of drawing gas, it is automatically mutual Corresponding matching that the water of condensation of flowing through in the steam flow that is output from steam turbine set and the heater (or high-pressure feed water) is measured.
Along with technological progress, generator set develops to large capacity high parameter, rotate in order to drive the Electricity Generation unit, steam turbine usually adopts the mode of some cylinders (high-pressure cylinder, intermediate pressure cylinder and low pressure (LP) cylinder) coaxial linkage running to drive the generator set running, and anti-streaming cylinder has structural optimization, comprehensive cost performance is high and find broad application; Anti-streaming cylinder comprises anti-streaming intermediate pressure cylinder and anti-streaming low pressure (LP) cylinder, it is arranged symmetrically with and is installed on coaxial unit work done level and forms by the multistage mirror image that is, unit work done level is the base unit of steam turbine, it is by some moving vanes on the impeller that is placed in rotor and be installed on that some stator blades form on the diaphragm housing ring of inner casing, heat energy steam is from the middle part input of anti-streaming cylinder, and be divided into two bursts of reverse flow and promote both sides impeller rotating in same directions, and then the drive generator rotation coaxial with steam turbine, then after the steam-expelling port that arranges by the outer shell middle part from the steam-expelling port at inner casing two ends converges to together, guide to low pressure (LP) cylinder by an exhaust steam pipe and continue work done, to realize the purpose of generator set running generating.Prior art has been simplified steam turbine structure, can save great deal of steel.But, because the steam discharge of inner cylinder is flowed through during the inner casing outer surface, because the erose inhibition of interior cylinder surfaces bolt, adapter and associated components so that the flow field of steam discharge becomes chaotic, causes larger flow losses.Simultaneously, the action of thermal difference of throttle (steam) temperature and exhaust temperature produced high temperature creep and permanent deformation in the middle of inner cylinder bore for a long time, caused the inner casing split larger connectivity to occur and dehisced and leak vapour, affected the Economy of device security and unit.
The model utility content
In order to solve the deficiencies in the prior art, the utility model provides a kind of steam discharge guide plate that steam advances middle each temperature difference deformation of row's structure steam turbine in contacting to reduce with inner casing that intercepts, and another purpose of the present utility model provides and a kind ofly guides that steam is smooth and easy to flow and turbine discharge guide plate that mirror image is arranged symmetrically with.
The utility model is realized in the following manner: advance the turbine discharge guide plate that the mirror image of middle row's structure is arranged symmetrically with in a kind of, comprise symmetrically arranged Inner cylinder and outer shell, described Inner cylinder is installed in the described outer shell, and form a ring-type steam cavity around the Inner cylinder between the two, described steam cavity bilateral symmetry is provided with the admission passage, described outer shell middle part is provided with exhaust passage, two groups of steam discharge guide plates that described ring-type steam cavity inner clip is held bilateral symmetry and arranged around the Inner cylinder, and described steam cavity is limited in the described steam discharge guide plate outside, the steam discharge guide plate of described symmetry is streamlined structure, it is inboard that its outer side is positioned at described admission passage, and its inner side edge is positioned at described exhaust passage edge.Setting up one in the steam cavity in steam turbine between outer shell is streamlined and mates the guide plate that encloses the Inner cylinder, so that the low energy steam that flows out from the admission passage is discharged in the guide plate outer side wall is directed to exhaust passage on the outer shell, between Inner cylinder and guide plate madial wall, form a thermal insulation layer, both prevented effectively that low energy steam from contacting with Inner cylinder outer wall, effectively reduce Inner cylinder temperature leak, and then reduce the deformation of Inner temperature difference of the cylinder, can also utilize fairshaped guide plate to reduce energy loss in the low energy discharge of steam process, Effective Raise energy recycling efficient, and then the working efficiency of raising steam turbine, also reduce energy consumption.
As preferably, the inside and outside both sides of described symmetrically arranged steam discharge guide plate evenly are provided with some with circular hole and the connecting plate that is of convenient length, described connecting plate all is connected on the described Inner cylinder by the hex screw with described circular hole coupling, the double-entry channel edge of described Inner cylinder outer wall and middle part be equipped with along Inner cylinder circle distribution and with the screw of described hex screw coupling.Described guide plate is fixed on the Inner cylinder of steam turbine by connecting plate, the convenient installation and maintenance, because the length of connecting plate can be regulated according to actual conditions, so that the mounting point between connecting plate and Inner cylinder can not affect the working position of guide plate, equally distributed screw provides stable support for guide plate on Inner cylinder outer wall, is connected by hex screw between connecting plate and Inner cylinder, and is both simple in structure, join strength is good, also makes things convenient for installation and repairing.
As preferably, the inside and outside both sides of described symmetrically arranged steam discharge guide plate evenly are provided with some with circular hole and the connecting plate that is of convenient length, described connecting plate all is connected on the described outer shell by the hex screw with described circular hole coupling, and the double-entry channel edge of the described outer inside wall of cylinder and exhaust passage edge, middle part are equipped with the screw with described hex screw coupling.Described guide plate is fixed on the outer shell of steam turbine by connecting plate, the convenient installation and maintenance, because the length of connecting plate can be regulated according to actual conditions, so that the mounting point between connecting plate and outer shell can not affect the working position of guide plate, equally distributed screw provides stable support for guide plate on the inside wall of cylinder outside, is connected by hex screw between connecting plate and outer shell, and is both simple in structure, join strength is good, also makes things convenient for installation and repairing.
As preferably, described hex screw passes successively a check washer and described circular hole and is screwed onto in the described screw, and described check washer one side has flanging, the edge matching of described flanging and described hex screw.Check washer plays the effect that the restriction hex screw gets loose, both guaranteed that guide plate was fixed on the working position all the time, also prevent from affecting the steam turbine normal operation because hex screw gets loose, when hex screw is screwed onto in the screw, and when clamping check washer and connecting plate, the edge of check washer one side is turned up, form described flanging, on the one hand, hex screw has clamped check washer, prevents that effectively check washer from rotating, on the other hand, fitting in the edge of flanging and hex screw, prevents that effectively hex screw from rotating, thereby play the effect that prevents that hex screw from getting loose.
As preferably, two groups of symmetrically arranged steam discharge guide plates and all have some arcuation flow guiding units to form ringwise.Guide plate is divided into two groups, and is symmetrical arranged, and every group of guide plate formed by some flow guiding units, when mounted, has both made things convenient at the skimble-scamble Inner cylinder of diameter outer wall and has installed, and guarantees guide plate and Inner cylinder outer wall coupling, also maintains easily.
The beneficial effects of the utility model: set up one in the steam cavity in steam turbine between outer shell and be streamlined and mate the guide plate that encloses the Inner cylinder, so that the low energy steam that flows out from the admission passage is discharged in the guide plate outer side wall is directed to exhaust passage on the outer shell, between Inner cylinder and guide plate madial wall, form a thermal insulation layer, both prevented effectively that low energy steam from contacting with Inner cylinder outer wall, effectively reduce Inner cylinder temperature leak, and then reduce the deformation of Inner temperature difference of the cylinder, can also utilize fairshaped guide plate to reduce energy loss in the low energy discharge of steam process, for improving energy recycling efficient, improve the working efficiency of steam turbine, also reduced energy consumption.
Description of drawings
Fig. 1 is that the utility model guide plate is fixed in the cross-sectional view on the Inner cylinder;
Fig. 2 is that the utility model guide plate is fixed in the cross-sectional view on the outer shell;
Fig. 3 is one group of guide plate side-looking decomposition texture schematic representation;
Among the figure: 1, Inner cylinder, 2, outer shell, 3, the steam cavity, 4, the admission passage, 5, exhaust passage, 6, guide plate, 7, connecting plate, 8, circular hole, 9, hex screw, 10, check washer, 11, flanging.
Embodiment
Below in conjunction with specification drawings and specific embodiments substantive distinguishing features of the present utility model is further described.
Advance the turbine discharge guide plate 6 that the mirror image of middle row's structure is arranged symmetrically with among as shown in Figure 1 a kind of, comprise symmetrically arranged Inner cylinder 1 and outer shell 2, described Inner cylinder 1 is installed in the described outer shell 2, and form a ring-type steam cavity 3 around Inner cylinder 1 between the two, described steam cavity 3 bilateral symmetry are provided with admission passage 4, described outer shell 2 middle parts are provided with exhaust passage 5, two groups of steam discharge guide plates 6 that described ring-type steam cavity 3 inner clips are held bilateral symmetry and arranged around Inner cylinder 1, and described steam cavity 3 is limited in described steam discharge guide plate 6 outsides, the steam discharge guide plate 6 of described symmetry is streamlined structure, its outer side is positioned at described admission passage 4 inboards, and its inner side edge is positioned at described exhaust passage 5 edges; Described symmetrically arranged steam discharge guide plate 6 inside and outside both sides evenly are provided with some with circular hole 8 and the connecting plate 7 that is of convenient length, described connecting plate 7 all is connected on the described Inner cylinder 1 by the hex screw 9 with described circular hole 8 couplings, double-entry passage 4 edges of described Inner cylinder 1 outer wall and middle part be equipped with along Inner cylinder 1 circle distribution and with the screw of described hex screw 9 couplings; Described hex screw 9 passes successively a check washer 10 and described circular hole 8 and is screwed onto in the described screw, and described check washer 10 1 sides have flanging 11, the edge matching of described flanging 11 and described hex screw 9; Two groups of symmetrically arranged steam discharge guide plates 6 and all have some arcuation flow guiding units to form ringwise.
As shown in Figure 2, described symmetrically arranged steam discharge guide plate 6 inside and outside both sides evenly are provided with some with circular hole 8 and the connecting plate 7 that is of convenient length, described connecting plate 7 all is connected on the described outer shell 2 by the hex screw 9 with described circular hole 8 couplings, and double-entry passage 4 edges of described outer shell 2 inwalls and middle part exhaust passage 5 edges are equipped with the screw with described hex screw 9 couplings.
In specific operation, guide plate 6 is installed in the steam cavity 3 between Inner cylinder 1 and the outer shell 2, both played the effect of guiding vapor flow, reduce steam energy loss in flowing, can also play the effect of isolation low energy steam and Inner cylinder 1 outer wall, effectively reduce the deformation that steam turbine Inner cylinder 1 produces because of the temperature difference, and then guarantee the identical operation of each parts match of steam turbine.When concrete the installation, first hex screw 9 is passed successively check washer 10 and circular hole 8; Again hex screw 9 is screwed onto in the corresponding screw, and tightens; At last, a side margin of check washer 10 is turned up, the flanging 11 of formation and hex screw 9 edge matchings prevents that effectively hex screw 9 from getting loose because rotated by external force.
In specific operation, described guide plate 6 is selected one and is connected on outer shell 2 or the Inner cylinder 1, thereby makes things convenient for steam turbine to install.In installation process, mounting guiding board 6 has dual mode, mode one: first guide plate 6 is installed on the Inner cylinder 1, and all connecting plates 7 are connected with Inner cylinder 1, outer shell 2 is nested with in Inner cylinder 1 outside finishes installation again; Mode two: in advance guide plate 6 is installed on the madial wall of outer shell 2, and all connecting plates 7 are connected with outer shell 2 madial walls, outer shell 2 is nested with in the outside of Inner cylinder 1 finishes installation again.Because the length of connecting plate 7 can be adjusted according to link position is different, so that the station of the link position of connecting plate 7 and guide plate 6 is coordinated coupling mutually.
In specific operation, two groups of symmetrically arranged steam discharge guide plates 6 and all have some arcuation flow guiding units to form ringwise.Guide plate 6 is spliced to form by the polylith flow guiding unit, Inner cylinder 1 coupling that is conducive to guide plate 6 and irregular reducing, the convenient installation, preferred version, one side guide plate 6 forms (as shown in Figure 3) by 3-5 piece flow guiding unit, also can change according to actual conditions, all should be considered as specific embodiment of the utility model.
In specific operation, the thickness of guide plate 6 can be determined according to its requirement of strength, as long as play the plate body structure of guiding and isolation vapor action, all should be considered as specific embodiment of the utility model.
In specific operation, realize anti-loose connections by hex screw 9 with the check washer 10 with flanging 11 between guide plate 6 and steam turbine, also can adopt other Placement and locking mode, as long as meet easy disassembly, be connected firmly and can reach the structure of locking requirement, all should be considered as specific embodiment of the utility model.
Claims (5)
1. advance the turbine discharge guide plate that the mirror image of middle row's structure is arranged symmetrically with in one kind, comprise symmetrically arranged Inner cylinder (1) and outer shell (2), described Inner cylinder (1) is installed in the described outer shell (2), and form a ring-type steam cavity (3) around Inner cylinder (1) between the two, described steam cavity (3) bilateral symmetry is provided with admission passage (4), described outer shell (2) middle part is provided with exhaust passage (5), it is characterized in that two groups of steam discharge guide plates (6) that described ring-type steam cavity (3) inner clip is held bilateral symmetry and arranged around Inner cylinder (1), and described steam cavity (3) is limited in described steam discharge guide plate (6) outside, the steam discharge guide plate (6) of described symmetry is streamlined structure, its outer side is positioned at described admission passage (4) inboard, and its inner side edge is positioned at described exhaust passage (5) edge.
2. the turbine discharge guide plate that is arranged symmetrically with of the mirror image that advances middle row's structure in a kind of according to claim 1, it is characterized in that the connecting plate (7) that the inside and outside both sides of described symmetrically arranged steam discharge guide plate (6) evenly are provided with some band circular holes (8) and are of convenient length, described connecting plate (7) all is connected on the described Inner cylinder (1) by the hex screw (9) with described circular hole (8) coupling, double-entry passage (4) edge of described Inner cylinder (1) outer wall and middle part be equipped with along Inner cylinder (1) circle distribution and with the screw of described hex screw (9) coupling.
3. the turbine discharge guide plate that is arranged symmetrically with of the mirror image that advances middle row's structure in a kind of according to claim 1, it is characterized in that the connecting plate (7) that the inside and outside both sides of described symmetrically arranged steam discharge guide plate (6) evenly are provided with some band circular holes (8) and are of convenient length, described connecting plate (7) all is connected on the described outer shell (2) by the hex screw (9) with described circular hole (8) coupling, and double-entry passage (4) edge of described outer shell (2) inwall and middle part exhaust passage (5) edge are equipped with the screw with described hex screw (9) coupling.
4. according to claim 2 or the turbine discharge guide plate that is arranged symmetrically with of the 3 described mirror images that advance middle row's structure in a kind of, it is characterized in that described hex screw (9) passes successively a check washer (10) and described circular hole (8) and is screwed onto in the described screw, described check washer (10) one sides have flanging (11), the edge matching of described flanging (11) and described hex screw (9).
5. the turbine discharge guide plate that is arranged symmetrically with of the mirror image that advances middle row's structure in a kind of according to claim 1 is characterized in that two groups of symmetrically arranged steam discharge guide plates (6) ringwise, and all has some arcuation flow guiding units to form.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320255095 CN203248209U (en) | 2013-05-09 | 2013-05-09 | Turbine steam-exhaust guiding plate arranged in mirror-symmetry mode of middle admission and middle exhaust structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320255095 CN203248209U (en) | 2013-05-09 | 2013-05-09 | Turbine steam-exhaust guiding plate arranged in mirror-symmetry mode of middle admission and middle exhaust structure |
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| Publication Number | Publication Date |
|---|---|
| CN203248209U true CN203248209U (en) | 2013-10-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201320255095 Expired - Lifetime CN203248209U (en) | 2013-05-09 | 2013-05-09 | Turbine steam-exhaust guiding plate arranged in mirror-symmetry mode of middle admission and middle exhaust structure |
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| CN (1) | CN203248209U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108952821A (en) * | 2018-09-25 | 2018-12-07 | 中国船舶重工集团公司第七0三研究所 | A kind of fixed marine turbing deflector structure |
-
2013
- 2013-05-09 CN CN 201320255095 patent/CN203248209U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108952821A (en) * | 2018-09-25 | 2018-12-07 | 中国船舶重工集团公司第七0三研究所 | A kind of fixed marine turbing deflector structure |
| CN108952821B (en) * | 2018-09-25 | 2023-12-08 | 中国船舶重工集团公司第七0三研究所 | Fixed marine steam turbine guide plate structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 310003 Hangzhou City, Fung Fung Road, No. Guoxin real estate building, building 15, building 108 Patentee after: ZHEJIANG ENERGY R & D INSTITUTE Co.,Ltd. Address before: 310003 Hangzhou City, Fung Fung Road, No. Guoxin real estate building, building 15, building 108 Patentee before: Zhejiang Zheneng Energy Technology Co.,Ltd. |
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| CX01 | Expiry of patent term |
Granted publication date: 20131023 |
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| CX01 | Expiry of patent term |