CN102242646A - Arrangement structure of low-pressure steel frame at lower half of low-pressure outer cylinder of turbine - Google Patents
Arrangement structure of low-pressure steel frame at lower half of low-pressure outer cylinder of turbine Download PDFInfo
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- CN102242646A CN102242646A CN2010101711534A CN201010171153A CN102242646A CN 102242646 A CN102242646 A CN 102242646A CN 2010101711534 A CN2010101711534 A CN 2010101711534A CN 201010171153 A CN201010171153 A CN 201010171153A CN 102242646 A CN102242646 A CN 102242646A
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- stay tube
- intermediate lateral
- tube
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- rectangle frame
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Abstract
The invention discloses an arrangement structure of a low-pressure steel frame at the lower half of a low-pressure outer cylinder of a turbine. The low-pressure steel frame comprises a plurality of transverse stay pipes and a plurality of longitudinal stay pipes, wherein the transverse stay pipes comprise a middle transverse stay pipe positioned on a transverse center line and a plurality of lateral transverse stay pipes symmetrically arranged at the two sides of the middle transverse stay pipe at intervals; the longitudinal stay pipes are symmetrically arranged at the two sides of a longitudinal central line at intervals; the center of the middle transverse stay pipe is divided into a two-segment structure after a segment with length of L is disconnected at the center of the middle transverse stay pipe; the middles of two near-middle longitudinal stay pipes which are the nearest to the longitudinal central line are disconnected; and two disconnected heads are respectively arranged on two near-middle transverse stay pipes which are the nearest to the middle transverse stay pipe, L is larger than the distance between the two near-middle longitudinal stay pipes, and the two disconnected heads of the middle transverse stay pipe are respectively connected with the disconnected heads of the two near-middle longitudinal stay pipes through two inclined pipes, so that a hexagonal honeycomb structure composed of the two near-middle transverse stay pipes and the two inclined pipes and located at the center is realized.
Description
Technical field
The present invention relates to a kind of second layout of low pressure steelframe of lp outer casing of steam turbine.
Background technique
The lp outer casing of steam turbine all is welded by steel plate.Lp outer casing is divided into upper and lower half.Second is the rectangle frame structure that end wall and sidewall constitute for a lp outer casing, longitudinally constitutes the low pressure steelframe with the stay tube of laterally burn-oning on steel plate in rectangle frame, and this low pressure steelframe has been strengthened the rigidity and the intensity of lp outer casing.At the extraction opening place of unit, the low pressure steelframe need be reserved neutral gear, arranges easily for No. 6 extraction openings of low pressure of unit.
Existing low pressure steelframe adopts and is being welded on respectively on vertical steel plate 22 and the horizontal steel plate 21 by horizontal stay tube 11 and vertical stay tube 12, formation has the structure (seeing Fig. 1 a and Fig. 1 b) of a plurality of rectangle neutral gears, the cross central line that wherein is positioned at unit is provided with intermediate lateral stay tube 110, also have and a kind ofly be provided with central longitudinal to stay tube being positioned on the vertical center line of unit, No. 6 extraction openings 10 of low pressure of unit can only be arranged in the rectangle neutral gear of a side of unit center line, the caliber size of No. 6 extraction openings 10 of unit is restricted, and asymmetric drawing gas also influence the strength character of low-pressure internal cylinder.Along with the continuous increase of supercritical turbine capacity, the bore of No. 6 extraction openings of its unit low pressure is also increasing, and asymmetric extraction opening layout is also big more to the strength character influence of steam turbine low-pressure inner casing, therefore has a strong impact on the Security of unit operation; If the low pressure steelframe still adopts the structure of rectangle neutral gear, can not meet the demands, therefore must change the low pressure steelframe at the layout that is positioned at No. 6 extraction openings.
Summary of the invention
The objective of the invention is in order to overcome the deficiencies in the prior art, a kind of second layout of low pressure steelframe of lp outer casing of steam turbine is provided, it can satisfy the layout of the low-pressure pumping steam mouth of big capacity unit, and realizes that the complete symmetry of unit draws gas, and has improved the Security of steam turbine operation.
A kind of technological scheme that realizes above-mentioned purpose is: second the layout of low pressure steelframe of a kind of lp outer casing of steam turbine, second is the rectangle frame that two vertical steel plates and two horizontal steel plates surround for described lp outer casing, described low pressure steelframe comprises many horizontal stay tube and the many vertical stay tubes that are connected on the described two horizontal steel plates of being connected on described two vertical steel plates, and described vertical stay tube is connected in the intersection with horizontal stay tube, described horizontal stay tube comprises an intermediate lateral stay tube and some symmetries and the compartment of terrain horizontal stay tube of side that is arranged in these intermediate lateral stay tube both sides on the cross central line that is positioned at described rectangle frame, described vertical stay tube symmetrically and the compartment of terrain be arranged in the both sides of the vertical center line of described rectangle frame, described intermediate lateral stay tube disconnects in the central authorities of described rectangle frame and becomes two-stage structure after a segment length is L, in described many vertical stay tubes two from the nearest nearly central longitudinal of the vertical center line of described rectangle frame separated two-stage structure in stay tube is, and every nearly central longitudinal is connected to two on the nearest nearly intermediate lateral stay tube of described intermediate lateral stay tube to two disconnection heads of stay tube, described L is greater than the distance of two described nearly central longitudinal between stay tube, two of described intermediate lateral stay tube disconnect head and are connected to the disconnection head of stay tube with two described nearly central longitudinal by two inclined tubes respectively, so that neutral gear that be made of two described nearly intermediate lateral stay tubes and four described inclined tubes and that be positioned at described rectangle frame central authorities is hexagonal cellular structure.
The layout of above-mentioned low pressure steelframe, wherein, an end of described inclined tube is connected with the disconnection head of described intermediate lateral stay tube by tee union, and the other end of described inclined tube is connected with the disconnection head of described nearly central longitudinal to stay tube by cross fitting.
The another kind of technological scheme that realizes above-mentioned purpose is: second the layout of low pressure steelframe of a kind of lp outer casing of steam turbine, second is the rectangle frame that two vertical steel plates and two horizontal steel plates surround for described lp outer casing, described low pressure steelframe comprises many horizontal stay tube and the many vertical stay tubes that are connected on the described two horizontal steel plates of being connected on described two vertical steel plates, and described vertical stay tube is connected in the intersection with horizontal stay tube, described horizontal stay tube comprises an intermediate lateral stay tube and some symmetries and the compartment of terrain horizontal stay tube of side that is arranged in these intermediate lateral stay tube both sides on the cross central line that is positioned at described rectangle frame, described vertical stay tube comprises that a central longitudinal on the vertical center line that is positioned at described rectangle frame is arranged in this central longitudinal to the vertical stay tube of the side of stay tube both sides to stay tube and some symmetries and compartment of terrain, described intermediate lateral stay tube disconnects in the central authorities of described rectangle frame and becomes two-stage structure after a segment length is L, described central longitudinal separated two-stage structure in stay tube is, and this central longitudinal is connected to two on the nearest nearly intermediate lateral stay tube of described intermediate lateral stay tube to two disconnection heads of stay tube, described L equals two distances between the described nearly intermediate lateral stay tube, two of described intermediate lateral stay tube disconnect head and are connected with the disconnection head of described central longitudinal to stay tube by two inclined tubes respectively, so that neutral gear that be made of four described inclined tubes and that be positioned at described rectangle frame central authorities is the cellular structure of four prismatics.
The layout of above-mentioned low pressure steelframe, wherein, an end of described inclined tube is connected with the disconnection head of described intermediate lateral stay tube by tee union, and the other end of described inclined tube is connected with the disconnection head of described central longitudinal to stay tube by five-way joint.
Second the technological scheme of layout of low pressure steelframe of the lp outer casing of steam turbine of the present invention adopts the neutral gear that makes up four bigger limits or hexagon cellular structure in low pressure steelframe central authorities, make No. 6 extraction openings of unit can be arranged in second center of lp outer casing, can realize that the complete symmetry of unit is drawn gas.The big I of cellular structure adjusts according to the bore of No. 6 extraction openings of low pressure, can satisfy the rigidity intensity of low pressure steelframe, can satisfy the design of No. 6 extraction openings of low pressure of large-capacity ultra-supercritical steam turbine again, thus the Security that has improved unit operation.
Description of drawings
Fig. 1 a is second the schematic representation of layout of low pressure steelframe of lp outer casing of prior art;
Fig. 1 b is the A portion enlarged view among Fig. 1 a;
Fig. 2 a is second the schematic representation of layout of low pressure steelframe of a kind of lp outer casing of the present invention;
Fig. 2 b is the B portion enlarged view among Fig. 2 a;
Fig. 3 a is second the schematic representation of layout of low pressure steelframe of another kind of lp outer casing of the present invention;
Fig. 3 b is the C portion enlarged view among Fig. 3 a.
Embodiment
In order to understand technological scheme of the present invention better, below by embodiment particularly and be described in detail in conjunction with the accompanying drawings:
See also Fig. 2 a and Fig. 2 b, second the layout of low pressure steelframe of the lp outer casing of a kind of steam turbine of the present invention, second is the rectangle frame 20 that two vertical steel plates 22 and two horizontal steel plates 21 surround for a lp outer casing, the low pressure steelframe comprises many horizontal stay tube 11 and the many vertical stay tubes 12 that are connected on the two horizontal steel plates 21 of being connected on two vertical steel plates 22, and vertically stay tube 12 and horizontal stay tube 11 are connected in the intersection.
Laterally stay tube 11 comprises an intermediate lateral stay tube 110 and some symmetries and the compartment of terrain horizontal stay tube of side that is arranged in these intermediate lateral stay tube 110 both sides on the cross central line that is positioned at rectangle frame 20; Intermediate lateral stay tube 110 disconnects in the central authorities of rectangle frame 20 and becomes two-stage structure after a segment length is L, L greater than two from the nearest distance H of nearly central longitudinal between stay tube 111 of intermediate lateral stay tube 110, L and H can adjust according to the bore of No. 6 extraction openings 10 of low pressure.
Vertically stay tube 12 symmetrically and the compartment of terrain be arranged in the both sides of the vertical center line of rectangle frame 20; Two in many vertical stay tubes 12 from the nearest nearly central longitudinal separated two-stage structure in stay tube 121 is of the vertical center line of rectangle frame 20, and every nearly central longitudinal disconnects head to two of stay tube 121 and is connected on two nearly intermediate lateral stay tubes 111.
Two of intermediate lateral stay tube 110 disconnect head and are connected with the disconnection head of two nearly central longitudinal to stay tube 121 by two inclined tubes 30 respectively, so that neutral gear that constitute by two nearly intermediate lateral stay tubes 111 and four inclined tubes 30 and that be positioned at the central authorities of rectangle frame 20 is hexagonal cellular structure.
One end of inclined tube 30 is connected with the disconnection head of intermediate lateral stay tube 110 by tee union 4, and the other end of inclined tube 30 is connected to the disconnection head of stay tube 121 with nearly central longitudinal by cross fitting 5.
See also Fig. 3 a and Fig. 3 b again, second the layout of low pressure steelframe of the lp outer casing of another kind of steam turbine of the present invention, second is the rectangle frame 20 that two vertical steel plates 22 and two horizontal steel plates 21 surround for a lp outer casing, the low pressure steelframe comprises many horizontal stay tube 11 and the many vertical stay tubes 12 that are connected on the two horizontal steel plates 21 of being connected on two vertical steel plates 22, and vertically stay tube 12 and horizontal stay tube 11 are connected in the intersection.
Laterally stay tube 11 comprises an intermediate lateral stay tube 110 and some symmetries and the compartment of terrain horizontal stay tube of side that is arranged in these intermediate lateral stay tube both sides on the cross central line that is positioned at rectangle frame 20; Intermediate lateral stay tube 110 disconnects in the central authorities of rectangle frame 20 and becomes two-stage structure after a segment length is L, L equal two between the nearest nearly intermediate lateral stay tube 111 of intermediate lateral stay tube 110 apart from Z; L and Z can adjust according to the bore of No. 6 extraction openings 10 of low pressure;
Vertically stay tube 12 comprises that a central longitudinal on the vertical center line that is positioned at rectangle frame 20 is arranged in the side vertical stay tube of this central longitudinal to stay tube 120 both sides to stay tube 120 and some symmetries and compartment of terrain; Central longitudinal is separated two-stage structure in stay tube 120 is, and this central longitudinal is connected on two nearly intermediate lateral stay tubes 111 to two disconnection heads of stay tube 120;
Two of intermediate lateral stay tube 110 disconnect head and are connected with the disconnection head of central longitudinal to stay tube 120 by two inclined tubes 30 respectively, so that be positioned at the central of rectangle frame 20 and be the cellular structure of four prismatics by the neutral gear that four inclined tubes 30 constitute.
Inclined tube 30 is connected with the disconnection head of intermediate lateral stay tube 110 by tee union 4, and the other end of inclined tube 30 is connected with the disconnection head of central longitudinal to stay tube 120 by five-way joint 6.
Second the technological scheme of layout of low pressure steelframe of the lp outer casing of steam turbine of the present invention makes up the neutral gear of the cellular structure of a bigger Hexagon or four prismatics in central authorities, the big I of cellular structure adjusts according to the bore of No. 6 extraction openings 10 of low pressure, just can satisfy the design of No. 6 extraction openings of low pressure of large-capacity ultra-supercritical steam turbine, can satisfy the rigidity intensity of low pressure steelframe, can realize that again the complete symmetry of unit draws gas, thus the Security that has improved unit operation.
Those of ordinary skill in the art will be appreciated that, above embodiment is used for illustrating the present invention, and be not to be used as limitation of the invention, as long as in connotation scope of the present invention, all will drop in claims scope of the present invention the above embodiment's variation, modification.
Claims (4)
1. second the layout of low pressure steelframe of the lp outer casing of a steam turbine, second is the rectangle frame that two vertical steel plates and two horizontal steel plates surround for described lp outer casing, described low pressure steelframe comprises many horizontal stay tube and the many vertical stay tubes that are connected on the described two horizontal steel plates of being connected on described two vertical steel plates, and described vertical stay tube is connected in the intersection with horizontal stay tube, described horizontal stay tube comprises an intermediate lateral stay tube and some symmetries and the compartment of terrain horizontal stay tube of side that is arranged in these intermediate lateral stay tube both sides on the cross central line that is positioned at described rectangle frame, described vertical stay tube symmetrically and the compartment of terrain be arranged in the both sides of the vertical center line of described rectangle frame, it is characterized in that, described intermediate lateral stay tube disconnects in the central authorities of described rectangle frame and becomes two-stage structure after a segment length is L, in described many vertical stay tubes two from the nearest nearly central longitudinal of the vertical center line of described rectangle frame separated two-stage structure in stay tube is, and every nearly central longitudinal is connected to two on the nearest nearly intermediate lateral stay tube of described intermediate lateral stay tube to two disconnection heads of stay tube, described L is greater than the distance of two described nearly central longitudinal between stay tube, two of described intermediate lateral stay tube disconnect head and are connected to the disconnection head of stay tube with two described nearly central longitudinal by two inclined tubes respectively, so that neutral gear that be made of two described nearly intermediate lateral stay tubes and four described inclined tubes and that be positioned at described rectangle frame central authorities is hexagonal cellular structure.
2. second the layout of low pressure steelframe of the lp outer casing of steam turbine according to claim 1, it is characterized in that, one end of described inclined tube is connected with the disconnection head of described intermediate lateral stay tube by tee union, and the other end of described inclined tube is connected with the disconnection head of described nearly central longitudinal to stay tube by cross fitting.
3. second the layout of low pressure steelframe of the lp outer casing of a steam turbine, second is the rectangle frame that two vertical steel plates and two horizontal steel plates surround for described lp outer casing, described low pressure steelframe comprises many horizontal stay tube and the many vertical stay tubes that are connected on the described two horizontal steel plates of being connected on described two vertical steel plates, and described vertical stay tube is connected in the intersection with horizontal stay tube, described horizontal stay tube comprises an intermediate lateral stay tube and some symmetries and the compartment of terrain horizontal stay tube of side that is arranged in these intermediate lateral stay tube both sides on the cross central line that is positioned at described rectangle frame, described vertical stay tube comprises that a central longitudinal on the vertical center line that is positioned at described rectangle frame is arranged in this central longitudinal to the vertical stay tube of the side of stay tube both sides to stay tube and some symmetries and compartment of terrain, it is characterized in that, described intermediate lateral stay tube disconnects in the central authorities of described rectangle frame and becomes two-stage structure after a segment length is L, described central longitudinal separated two-stage structure in stay tube is, and this central longitudinal is connected to two on the nearest nearly intermediate lateral stay tube of described intermediate lateral stay tube to two disconnection heads of stay tube, described L equals two distances between the described nearly intermediate lateral stay tube, two of described intermediate lateral stay tube disconnect head and are connected with the disconnection head of described central longitudinal to stay tube by two inclined tubes respectively, so that neutral gear that be made of four described inclined tubes and that be positioned at described rectangle frame central authorities is the cellular structure of four prismatics.
4. second the layout of low pressure steelframe of the lp outer casing of steam turbine according to claim 3, it is characterized in that, one end of described inclined tube is connected with the disconnection head of described intermediate lateral stay tube by tee union, and the other end of described inclined tube is connected with the disconnection head of described central longitudinal to stay tube by five-way joint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010171153.4A CN102242646B (en) | 2010-05-13 | 2010-05-13 | Arrangement structure of low-pressure steel frame at lower half of low-pressure outer cylinder of turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010171153.4A CN102242646B (en) | 2010-05-13 | 2010-05-13 | Arrangement structure of low-pressure steel frame at lower half of low-pressure outer cylinder of turbine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102242646A true CN102242646A (en) | 2011-11-16 |
| CN102242646B CN102242646B (en) | 2014-09-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010171153.4A Active CN102242646B (en) | 2010-05-13 | 2010-05-13 | Arrangement structure of low-pressure steel frame at lower half of low-pressure outer cylinder of turbine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108678816A (en) * | 2018-06-29 | 2018-10-19 | 东方电气集团东方汽轮机有限公司 | A kind of support construction improving steam turbine low-pressure outer shell bearing block resistance to shock |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3873052A (en) * | 1972-03-22 | 1975-03-25 | Klein Schanzlin & Becker Ag | Supporting structure for motors of vertical centrifugal pumps |
| US5575607A (en) * | 1994-11-02 | 1996-11-19 | United Technologies Corporation | Jet engine transport vehicle lift system and a build cell |
| US5779435A (en) * | 1995-06-30 | 1998-07-14 | Asea Brown Boveri Ag | Low-pressure steam turbine |
| CN2937487Y (en) * | 2006-07-19 | 2007-08-22 | 上海汽轮机有限公司 | Floor-mounted setting structure for turbine low pressure inner cylinder |
-
2010
- 2010-05-13 CN CN201010171153.4A patent/CN102242646B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3873052A (en) * | 1972-03-22 | 1975-03-25 | Klein Schanzlin & Becker Ag | Supporting structure for motors of vertical centrifugal pumps |
| US5575607A (en) * | 1994-11-02 | 1996-11-19 | United Technologies Corporation | Jet engine transport vehicle lift system and a build cell |
| US5779435A (en) * | 1995-06-30 | 1998-07-14 | Asea Brown Boveri Ag | Low-pressure steam turbine |
| CN2937487Y (en) * | 2006-07-19 | 2007-08-22 | 上海汽轮机有限公司 | Floor-mounted setting structure for turbine low pressure inner cylinder |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108678816A (en) * | 2018-06-29 | 2018-10-19 | 东方电气集团东方汽轮机有限公司 | A kind of support construction improving steam turbine low-pressure outer shell bearing block resistance to shock |
| CN108678816B (en) * | 2018-06-29 | 2020-10-23 | 东方电气集团东方汽轮机有限公司 | Supporting structure for improving vibration resistance of low-pressure outer cylinder bearing block of steam turbine |
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| Publication number | Publication date |
|---|---|
| CN102242646B (en) | 2014-09-03 |
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