CN104047641B - The linkage structure of valve and cylinder on steam turbine - Google Patents
The linkage structure of valve and cylinder on steam turbine Download PDFInfo
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- CN104047641B CN104047641B CN201410273215.0A CN201410273215A CN104047641B CN 104047641 B CN104047641 B CN 104047641B CN 201410273215 A CN201410273215 A CN 201410273215A CN 104047641 B CN104047641 B CN 104047641B
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Abstract
The invention provides the linkage structure of valve and cylinder on a kind of steam turbine, comprise cylinder connecting end and valve connection end, the end of described cylinder connecting end and valve connection end all has radially outstanding step, it also comprises the identical opening slot of two pieces structure, the described end face of cylinder connecting end and the end face of valve connection end are sticked to form pipe piece, described pipe piece wraps up from both up and down by described two pieces opening slot, and described step is placed in the vallecular cavity of described opening slot, described opening slot and described pipe piece interference fit in the axial direction, and described two pieces opening slot is fixedly linked by multiple bolt.The present invention fully ensure that the connection sealing between cylinder connecting end and valve connection end, effectively shortens distance between the two, avoids vapour losses; Opening slot is uniform force in whole linkage structure, and resistance to deformation is strong; Whole linkage structure is fixedly formed by two pieces opening slot, is easy to dismounting maintenance.
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 transformation of energy of steam being become mechanical work.Main prime mover being used as generating, also can the various pump of Direct driver, blower fan, compressor and propeller for vessels etc.The steam discharge of steam turbine or intermediate extraction can also be utilized to meet and to produce and heat supply needs in life.Steam turbine works usually 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 connecting 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, cylinder 3 is entered by main steam line 2 from valve 1 main steam out, main steam line is connected with cylinder inlet 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 inlet and valve export directly can be connected, and sealing between the two can be guaranteed, 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 socket end and the second pipe socket end, wherein said first pipe socket end is removably connected with described second pipe socket end by locking nut, and threaded collar is arranged between described second pipe socket 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, being connected distance, easily causing the problem of vapour losses for solving cylinder in prior art with valve.
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 connection end, the end of described cylinder connecting end and valve connection end all has radially outstanding step, it also comprises the identical opening slot of two pieces structure, the described end face of cylinder connecting end and the end face of valve connection end are sticked to form pipe piece, described pipe piece wraps up from both up and down by described two pieces opening slot, 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 pieces opening slot is fixedly linked by multiple bolt.
Preferably, the external diameter of described cylinder connecting end is different with the external diameter of valve connection end, then the vallecular cavity of described opening slot is spliced by the sub-chamber that two internal diameters are different, 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 connection 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 and is fixed by described two opening slots.
Preferably, four drift angle places of described two opening slots are equipped with the bolt hole wearing described bolt.
Preferably, on described pipe piece axial direction, the width of described vallecular cavity is identical with the step overall width of valve connection end with described cylinder 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 the opening slot that two pieces structure is identical cylinder connecting end and valve connection end to be wrapped up, by with pipe piece Step Shaft to interference fit, pipe piece compact siro spinning technology is got up, and be bolted, and the step of cylinder connecting end and valve connection end is placed in vallecular cavity, fully ensure that the connection sealing between cylinder connecting end and valve connection end, effectively shorten distance between the two, avoid vapour losses; Opening slot is uniform force in whole linkage structure, and resistance to deformation is strong; Whole linkage structure is fixedly formed by two pieces opening slot, is easy to dismounting maintenance.
Accompanying drawing explanation
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 connection end
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, embodiments of the present invention are described below, person skilled in the art scholar the content disclosed by this specification can understand other advantages of the present invention and effect easily.
Refer to Fig. 1 to Fig. 3.Notice, structure, ratio, size etc. that this specification institute accompanying drawings illustrates, content all only in order to coordinate specification to disclose, understand for person skilled in the art scholar and read, and be not used 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, do not affecting under effect that the present invention can produce and the object that can reach, still all should drop on disclosed technology contents and obtain in the scope that can contain.Simultaneously, quote in this specification as " on ", D score, "left", "right", " centre " and " one " etc. term, also only for ease of understanding of describing, and be not used to limit the enforceable scope of the present invention, the change of its relativeness or adjustment, under changing technology contents without essence, when being also considered as the enforceable category of the present invention.
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 connection end 11, the end of cylinder connecting end 31 and valve connection end 11 all has radially outstanding step 311, 111, it also comprises the identical opening slot of two pieces structure 4, the end face of cylinder connecting end 31 and the end face of valve connection end 11 are sticked to form pipe piece, pipe piece wraps up from both up and down by two pieces opening slot 4, and two steps 311, 111 are placed in the vallecular cavity 41 of opening slot 4, in this step place opening slot 4 and pipe piece interference fit in the axial direction, closely being connected of both realizations, and two pieces opening slot 4 is fixedly linked by multiple bolt 5.The present invention adopts the opening slot 4 that two pieces structure is identical cylinder connecting end 31 and valve connection end 11 to be wrapped up, and by bolt 5, two pieces opening slot 4 is fixed, and the step 311,111 of cylinder connecting end 31 and valve connection end 11 is placed in vallecular cavity, opening slot and the axial interference fit of pipe piece fully ensure that the connection sealing between cylinder connecting end 31 and valve connection end 11, effectively shorten distance between the two, avoid vapour losses; Opening slot 4 is uniform force in whole linkage structure, and resistance to deformation is strong; Whole linkage structure is fixedly formed by two pieces opening slot 4, is easy to dismounting maintenance.
If the external diameter of said cylinder connecting end 31 is different with the external diameter of valve connection end 11, then the vallecular cavity 41 of above-mentioned opening slot 4 is spliced by the sub-chamber that two internal diameters are different, 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 connection 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 and is fixed by two opening slots 4.The bolt of tight arrangement can, by two opening slot fixations, can not produce loosening.Further, four drift angle places of above-mentioned two opening slots 4 are equipped with the bolt hole wearing bolt 5.
General, on above-mentioned pipe piece axial direction (namely on the axial direction of cylinder connecting end and valve connection 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 connection end.
Linkage structure of the present invention is according to cylinder connecting end and valve connection end own structural characteristics and then design, opening slot is the fastener of a band vallecular cavity, the step of cylinder connecting end and valve connection end is fastened on the inside by it, two pieces opening slot is independently arranged, be easy to remove and install, fixed by two row's bolts, ensure that its fastness, opening slot self structure and cylinder connecting end and valve connection end structure match, and ensure that sealing between the two.
In sum, the linkage structure of valve and cylinder on steam turbine of the present invention, the opening slot that two pieces structure is identical is adopted cylinder connecting end and valve connection end to be wrapped up, by the interference fit with pipe piece axis, pipe piece compact siro spinning technology is got up, and is bolted, and the step of cylinder connecting end and valve connection end is placed in vallecular cavity, fully ensure that the connection sealing between cylinder connecting end and valve connection end, effectively shorten distance between the two, avoid vapour losses; Opening slot is uniform force in whole linkage structure, and resistance to deformation is strong; Whole linkage structure is fixedly formed by two pieces opening slot, is easy to dismounting maintenance.So the present invention effectively overcomes 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 without prejudice under spirit of the present invention and category, can modify above-described embodiment or changes.Therefore, such as have in art usually know the knowledgeable do not depart from complete under disclosed spirit and technological thought all equivalence modify or change, 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 connection end (11), the end of described cylinder connecting end (31) and valve connection end (11) all has radially outstanding step, it is characterized in that, also comprise the identical opening slot of two pieces structure (4), the end face of described cylinder connecting end (31) and the end face of valve connection end (11) are sticked to form pipe piece, described pipe piece wraps up from both up and down by two pieces opening slot (4), 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 pieces opening slot (4) is fixedly linked by multiple bolt (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 connection end (11), then the vallecular cavity (41) of described opening slot (4) is spliced by the sub-chamber that two internal diameters are different, 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 connection 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 pieces opening slot (4) is equipped with row's bolt hole, described bolt (5) is located in described bolt hole and described two pieces opening slot (4) is fixed.
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 pieces opening slot (4) are equipped with the bolt hole wearing 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 valve connection end (11) with described cylinder connecting end (31).
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 |
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| 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 |
|---|---|
| CN104047641A CN104047641A (en) | 2014-09-17 |
| CN104047641B true 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 |
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| CN104047641A (en) | 2014-09-17 |
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