CN104047641A - Connecting structure of valve and cylinder on steam turbine - Google Patents
Connecting structure of valve and cylinder on steam turbine Download PDFInfo
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- CN104047641A CN104047641A CN201410273215.0A CN201410273215A CN104047641A CN 104047641 A CN104047641 A CN 104047641A CN 201410273215 A CN201410273215 A CN 201410273215A CN 104047641 A CN104047641 A CN 104047641A
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- connecting end
- valve
- cylinder
- steam turbine
- linkage structure
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Abstract
The invention provides a connecting structure of a valve and a cylinder on a steam turbine. The connecting structure comprises a cylinder connecting end and a valve connecting end, and the end portion of the cylinder connecting end and the end portion of the valve connecting end are provided with steps which protrude in the radial direction respectively. The connecting structure further comprises two open slots with the same structure, the end face of the cylinder connecting end and the end face of the valve connecting end are attached to form a pipeline, the pipeline is covered with the two open slots from the upper face and the lower face, the steps are arranged in slot cavities of the open slots, the open slots and the pipeline are in interference fit in the axial direction, and the two open slots are fixedly connected through multiple bolts. According to the connecting structure, connecting sealing performance between the cylinder connecting end and the valve connecting end is fully guaranteed, the distance between the cylinder connecting end and the valve connecting end is effectively shortened, and steam losses are avoided; the open slots are evenly stressed in the whole connecting structure, and resistance to deformation is high; the whole connecting structure is formed by fixing the two open slots and is easy to demount, mount and overhaul.
Description
Technical field
The present invention relates to a kind of power station steam turbine, particularly relate to the linkage structure of valve and cylinder on a kind of steam turbine.
Background technique
Steam turbine is the rotary power machinery that the transformation of energy of steam is become to mechanical work.Main prime mover as generating use, also can directly drive various pumps, blower fan, compressor and propeller for vessels etc.Can also utilize steam discharge or the intermediate extraction of steam turbine to meet production and heat supply needs in life.Steam turbine is worked conventionally under High Temperature High Pressure and high-revolving condition, is a kind of comparatively accurate heavy machinery.Steam turbine steam inlet condition is more and more higher, and traditional structural type that connects high-pressure cylinder and main steam valve with main steam line can not meet structural strength and seal request.Traditional design method as shown in Figure 1, enter cylinder 3 from valve 1 main steam out by main steam line 2, main steam line is connected with cylinder import and valve export respectively by Type of Welding, because vapor stream is longer through main steam line distance, causes vapour losses larger.Therefore need a kind of linkage structure that cylinder import directly can be connected with valve export, and can guarantee sealing between the two, the environment that adaptive temperature is higher.
Chinese patent ZL201280009993 openly has dismountable connection of locking nut, the present invention relates to a kind of connection set, described connection set comprises the first pipe joint end and the second pipe joint end, wherein said the first pipe joint end is removably connected with described the second pipe joint end by locking nut, and threaded collar is arranged between described the second pipe joint end and described locking nut.The present invention realizes the direct connection between two pipe joints by locking nut and threaded collar.
Summary of the invention
The shortcoming of prior art in view of the above, the object of the present invention is to provide the linkage structure of valve and cylinder on a kind of steam turbine, is connected distance for solving prior art cylinder with valve, easily causes the problem of vapour losses.
For achieving the above object and other relevant objects, the invention provides the linkage structure of valve and cylinder on a kind of steam turbine, comprise cylinder connecting end and valve connecting end, the end of described cylinder connecting end and valve connecting end all has radially outstanding step, it also comprises two opening slots that structure is identical, the end face of the end face of described cylinder connecting end and valve connecting end is sticked to form pipe piece, described two opening slots wrap up described pipe piece from upper and lower two sides, and described step is placed in the vallecular cavity of described opening slot, opening slot and described pipe piece interference fit in the axial direction, and described two opening slots are fixedly linked by multiple bolts.
Preferably, the external diameter of described cylinder connecting end is different with the external diameter of valve connecting end, the vallecular cavity of described opening slot is spliced by two different sub-chambeies of internal diameter, and the internal diameter in two sub-chambeies respectively with the external diameter of described cylinder connecting end and the external diameter correspondent equal of valve connecting end.
Preferably, the dual-side of described two opening slots is equipped with row's bolt hole, and described bolt is located in described bolt hole described two opening slots are fixed.
Preferably, four of described two opening slots drift angle places are equipped with the bolt hole that wears described bolt.
Preferably, on described pipe piece axial direction, the width of described vallecular cavity is identical with the step overall width of described cylinder connecting end and valve connecting end.
As mentioned above, the linkage structure of valve and cylinder on steam turbine of the present invention, there is following beneficial effect: adopt two identical opening slots of structure that cylinder connecting end and valve connecting end are wrapped up, by with pipe piece Step Shaft to interference fit, pipe piece is closely coupled together, and be bolted, and the step of cylinder connecting end and valve connecting end is placed in vallecular cavity, fully guarantee the connection sealing between cylinder connecting end and valve connecting end, effectively shorten distance between the two, avoided vapour losses; Opening slot is stressed even in whole linkage structure, and resistance to deformation is strong; Whole linkage structure fixedly forms by two opening slots, is easy to dismounting maintenance.
Brief description of the drawings
Fig. 1 is shown as cylinder of the prior art and valve connecting structure schematic diagram.
Fig. 2 is shown as the linkage structure schematic diagram between steam turbine of the present invention and valve.
Fig. 3 is shown as the sectional view of AA line in Fig. 2.
Element numbers explanation
1 valve
11 valve connecting ends
2 main steam lines
3 cylinders
31 cylinder connecting ends
4 opening slots
41 vallecular cavities
111,311 steps
5 bolts
Embodiment
By particular specific embodiment explanation embodiments of the present invention, person skilled in the art scholar can understand other advantages of the present invention and effect easily by the disclosed content of this specification below.
Refer to Fig. 1 to Fig. 3.Notice, appended graphic the illustrated structure of this specification, ratio, size etc., all contents in order to coordinate specification to disclose only, understand and read for person skilled in the art scholar, not in order to limit the enforceable qualifications of the present invention, therefore the not technical essential meaning of tool, the adjustment of the modification of any structure, the change of proportionate relationship or size, not affecting under effect that the present invention can produce and the object that can reach, all should still drop on disclosed technology contents and obtain in the scope that can contain.Simultaneously, in this specification, quote as " on ", the term of D score, " left side ", " right side ", " centre " and " " etc., also only for ease of understanding of narrating, but not in order to limit the enforceable scope of the present invention, the change of its relativeness or adjustment, changing under technology contents, when being also considered as the enforceable category of the present invention without essence.
As shown in Figures 1 and 3, the invention provides the linkage structure of valve and cylinder on a kind of steam turbine, comprise cylinder connecting end 31 and valve connecting end 11, the end of cylinder connecting end 31 and valve connecting end 11 all has radially outstanding step 311, 111, it also comprises two opening slots 4 that structure is identical, the end face of the end face of cylinder connecting end 31 and valve connecting end 11 is sticked to form pipe piece, two opening slots 4 wrap up pipe piece from upper and lower two sides, and two steps 311, 111 are placed in the vallecular cavity 41 of opening slot 4, at this step place opening slot 4 and pipe piece interference fit in the axial direction, realize both being closely connected, and two opening slots 4 are fixedly linked by multiple bolts 5.The present invention adopts two identical opening slots 4 of structure that cylinder connecting end 31 and valve connecting end 11 are wrapped up, and by bolt 5, two opening slots 4 are fixed, and the step of cylinder connecting end 31 and valve connecting end 11 311,111 is placed in vallecular cavity, the axial interference fit of opening slot and pipe piece has fully been guaranteed the connection sealing between cylinder connecting end 31 and valve connecting end 11, effectively shorten distance between the two, avoided vapour losses; Opening slot 4 is stressed even in whole linkage structure, and resistance to deformation is strong; Whole linkage structure fixedly forms by two opening slots 4, is easy to dismounting maintenance.
If the external diameter of said cylinder connecting end 31 is different with the external diameter of valve connecting end 11, the vallecular cavity 41 of above-mentioned opening slot 4 is spliced by two different sub-chambeies of internal diameter, as shown in Figure 3, and the internal diameter in two sub-chambeies adapt with the external diameter of cylinder connecting end 31 and the external diameter of valve connecting end 11 respectively.
For ensureing two upper and lower connectivity robustness of opening slot, the dual-side of above-mentioned two opening slots 4 is equipped with row's bolt hole, and as shown in Figure 2, bolt 5 is located in bolt hole fixing two opening slots 4.The bolt of closely arranging can, by two opening slot fixations, can not produce loosening.Further, four of above-mentioned two opening slots 4 drift angle places are equipped with the bolt hole that wears bolt 5.
General, on above-mentioned pipe piece axial direction (on the axial direction of cylinder connecting end and valve connecting end), the width of vallecular cavity 41 is identical with the overall width of two steps 311,111.Guarantee two steps 311,111 to be fastened in vallecular cavity 41 with this, and the side of step 3111,111 and vallecular cavity inwall form interference fit, guarantee that two steps do not move axially space in vallecular cavity 41, guarantee the sealing of cylinder connecting end and valve connecting end.
Linkage structure of the present invention is according to cylinder connecting end and valve connecting end self structure feature and then design, opening slot is a fastener with vallecular cavity, its step by cylinder connecting end and valve connecting end is fastened on the inside, two opening slots independently arrange, be easy to remove and install, fix by two row's bolts, guaranteed its fastness, opening slot self structure and cylinder connecting end and valve connecting end structure match, and have guaranteed sealing between the two.
In sum, the linkage structure of valve and cylinder on steam turbine of the present invention, adopt two identical opening slots of structure that cylinder connecting end and valve connecting end are wrapped up, by the interference fit axial with pipe piece, pipe piece is closely coupled together, and be bolted, and the step of cylinder connecting end and valve connecting end is placed in vallecular cavity, fully guarantee the connection sealing between cylinder connecting end and valve connecting end, effectively shortened distance between the two, avoided vapour losses; Opening slot is stressed even in whole linkage structure, and resistance to deformation is strong; Whole linkage structure fixedly forms by two opening slots, is easy to dismounting maintenance.So the present invention has effectively overcome various shortcoming of the prior art and tool high industrial utilization.
Above-described embodiment is illustrative principle of the present invention and effect thereof only, but not for limiting the present invention.Any person skilled in the art scholar all can, under spirit of the present invention and category, modify or change above-described embodiment.Therefore, such as in affiliated technical field, have and conventionally know that the knowledgeable, not departing from all equivalence modifications that complete under disclosed spirit and technological thought or changing, must be contained by claim of the present invention.
Claims (5)
1. the linkage structure of valve and cylinder on a steam turbine, comprise cylinder connecting end (31) and valve connecting end (11), the end of described cylinder connecting end (31) and valve connecting end (11) all has radially outstanding step, it is characterized in that, also comprise two opening slots (4) that structure is identical, the end face of the end face of described cylinder connecting end (31) and valve connecting end (11) is sticked to form pipe piece, described two opening slots (4) wrap up described pipe piece from upper and lower two sides, and described step is placed in the vallecular cavity (41) of described opening slot (4), described opening slot and described pipe piece interference fit in the axial direction, and described two opening slots (4) are fixedly linked by multiple bolts (5).
2. the linkage structure of valve and cylinder on steam turbine according to claim 1, it is characterized in that: the external diameter of described cylinder connecting end (31) is different with the external diameter of valve connecting end (11), the vallecular cavity (41) of described opening slot (4) is spliced by two different sub-chambeies of internal diameter, and the internal diameter in two sub-chambeies respectively with the external diameter of described cylinder connecting end (31) and the external diameter correspondent equal of valve connecting end (11).
3. the linkage structure of valve and cylinder on steam turbine according to claim 1, it is characterized in that: the dual-side of described two opening slots (4) is equipped with row's bolt hole, described bolt (5) is located in described bolt hole described two opening slots (4) are fixing.
4. the linkage structure of valve and cylinder on steam turbine according to claim 1, is characterized in that: four drift angle places of described two opening slots (4) are equipped with the bolt hole that wears described bolt (5).
5. the linkage structure of valve and cylinder on steam turbine according to claim 1, it is characterized in that: on described pipe piece axial direction, the width of described vallecular cavity (41) is identical with the step overall width of described cylinder connecting end (31) and valve connecting end (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410273215.0A CN104047641B (en) | 2014-06-18 | 2014-06-18 | The linkage structure of valve and cylinder on steam turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410273215.0A CN104047641B (en) | 2014-06-18 | 2014-06-18 | The linkage structure of valve and cylinder on steam turbine |
Publications (2)
| Publication Number | Publication Date |
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| CN104047641A true CN104047641A (en) | 2014-09-17 |
| CN104047641B CN104047641B (en) | 2016-01-13 |
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| CN201410273215.0A Active CN104047641B (en) | 2014-06-18 | 2014-06-18 | The linkage structure of valve and cylinder on steam turbine |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2320789Y (en) * | 1998-02-26 | 1999-05-26 | 新华控制技术(集团)有限公司 | Steam valve regulating actuator for turbine |
| CN101255801A (en) * | 2007-03-02 | 2008-09-03 | 沈泉贵 | High back pressure internal combustion steam turbine |
| CN101285405A (en) * | 2008-06-03 | 2008-10-15 | 东方电气集团东方汽轮机有限公司 | Steam turbine steam extraction regulation valve |
| CN102022142A (en) * | 2009-09-23 | 2011-04-20 | 上海电气电站设备有限公司 | Built-in steam extraction controlling and regulating valve set for steam turbine |
| RU104240U1 (en) * | 2010-12-06 | 2011-05-10 | Общество с ограниченной ответственностью Инновационное предприятие "ЭНЕРГОЭФФЕКТ" | HEATING STEAM TURBINE WITH A DEVICE FOR REMOVING MOISTURE FROM STEAM FLOW BEFORE THE LOW PRESSURE CYLINDER |
| CN103233788A (en) * | 2013-04-25 | 2013-08-07 | 杭州汽轮机股份有限公司 | Extra-low-pressure and negative-pressure steam inlet and supply type turbine cylinder and operating method thereof |
| CN103470317A (en) * | 2013-09-11 | 2013-12-25 | 上海电气电站设备有限公司 | Joint valve structure for steam turbine |
-
2014
- 2014-06-18 CN CN201410273215.0A patent/CN104047641B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2320789Y (en) * | 1998-02-26 | 1999-05-26 | 新华控制技术(集团)有限公司 | Steam valve regulating actuator for turbine |
| CN101255801A (en) * | 2007-03-02 | 2008-09-03 | 沈泉贵 | High back pressure internal combustion steam turbine |
| CN101285405A (en) * | 2008-06-03 | 2008-10-15 | 东方电气集团东方汽轮机有限公司 | Steam turbine steam extraction regulation valve |
| CN102022142A (en) * | 2009-09-23 | 2011-04-20 | 上海电气电站设备有限公司 | Built-in steam extraction controlling and regulating valve set for steam turbine |
| RU104240U1 (en) * | 2010-12-06 | 2011-05-10 | Общество с ограниченной ответственностью Инновационное предприятие "ЭНЕРГОЭФФЕКТ" | HEATING STEAM TURBINE WITH A DEVICE FOR REMOVING MOISTURE FROM STEAM FLOW BEFORE THE LOW PRESSURE CYLINDER |
| CN103233788A (en) * | 2013-04-25 | 2013-08-07 | 杭州汽轮机股份有限公司 | Extra-low-pressure and negative-pressure steam inlet and supply type turbine cylinder and operating method thereof |
| CN103470317A (en) * | 2013-09-11 | 2013-12-25 | 上海电气电站设备有限公司 | Joint valve structure for steam turbine |
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| Publication number | Publication date |
|---|---|
| CN104047641B (en) | 2016-01-13 |
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