CN204755003U - Support framework of main vapour governing valve of steam turbine high pressure - Google Patents
Support framework of main vapour governing valve of steam turbine high pressure Download PDFInfo
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- CN204755003U CN204755003U CN201520487143.XU CN201520487143U CN204755003U CN 204755003 U CN204755003 U CN 204755003U CN 201520487143 U CN201520487143 U CN 201520487143U CN 204755003 U CN204755003 U CN 204755003U
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Abstract
The utility model discloses a support framework of main vapour governing valve of steam turbine high pressure, including supporting seat, support column, be equipped with cylindrical spring in the supporting seat, the support column is located on cylindrical spring, the top of support column still has the ball wheel car and the seat that parks, the top at the support column is fixed to the seat that parks, ball wheel car is parked on the seat that parks, ball wheel car includes automobile body and spherical wheel, spherical wheel arrangement is in the bottom surface of automobile body, the top of automobile body and the hookup of the ram's horn of governing valve, when valve expend with heat and contract with cold, the synchronous displacement unanimous with the horizontal breathing orientation of valve takes place for ball wheel car, absorbs the breathing volume of 360 degrees arbitrary orientations of valve level, makes the framework remain vertical state throughout, has improved the security of valve.
Description
Technical field
The utility model relates to steam turbine valve, particularly relates to the supporting frame of turbine high-pressure main steam control valve door.
Background technique
The high-pressure main steam regulating valve of steam turbine be steam enter steam turbine first gate, the pressure born large (being greater than 10MPa), temperature high (higher than 500 DEG C), with working conditions change, the effect of expanding with heat and contract with cold of valve is remarkable, and this effect comprises the effect of expanding with heat and contract with cold of short transverse and horizontal 360-degree any direction.
Modulating valve is arranged on supporting frame, and supporting frame is fixed on basis, and body base is with four ram's horns, and every ram's horn all uses a frame supports.The earliest, be support with rigid frame, can not effect of expanding with heat and contract with cold be adapted to, there is great potential safety hazard; Afterwards, change into by frame supports of floating, as shown in Figure 1, this floating framework has supporting base, supporting post, be provided with cylindrical spring in supporting base, supporting post is seated on cylindrical spring, and supporting post can upper and lowerly be floated, this floating framework can adapt to valve expanding with heat and contract with cold in short transverse, but can not adapt to valve expanding with heat and contract with cold in the horizontal direction, framework can tilt to suppress power, may damage time serious, lose support function, cause security incident.
Summary of the invention
For above-mentioned the deficiencies in the prior art, the utility model provides a kind of supporting frame of turbine high-pressure main steam control valve, both can adapt to valve expanding with heat and contract with cold in short transverse, also can adapt to valve expanding with heat and contract with cold at horizontal 360-degree any direction.
The technical solution of the utility model is:
A supporting frame for turbine high-pressure main steam control valve, comprises supporting base, supporting post, is provided with cylindrical spring in described supporting base, and described supporting post is seated on cylindrical spring, and cylindrical spring bears valve gravitational load and absorbs vertical direction thermal walking; It is characterized in that: on the top of described supporting post, also have ball wheel car and parking seat thereof, described parking seat is fixed on the top of supporting post, and described ball wheel car is parked on parking seat; Described ball wheel car comprises car body and spherical wheel, and described spherical wheel is arranged in the bottom surface of car body; The top of described car body connects with the ram's horn of modulating valve; When valve expands with heat and contract with cold, there is the synchronous shift consistent with valve horizontal breathing direction in ball wheel car, absorbs the breathing amount of valve horizontal 360-degree any direction, make framework remain vertical state.
The wheel of described ball wheel car is made up of some steel balls and retainer thereof, and described steel ball is positioned at retainer, and circumference is uniformly distributed, and described car body is directly seated on the steel ball of wheel;
Described parking seat is disk-like structure, and Pan Ding has circular deep gouge, and described ball wheel car is parked in this deep gouge, and during cold conditions, ball wheel parking stall is in deep gouge center, and the gap of ball wheel car periphery and cell wall is greater than valve swell increment in the horizontal direction.
In parking seat deep gouge, be equipped with several pieces of spring sheets, be uniformly distributed, surround lopping along deep gouge inwall circumference, forming a sectional shape is the spring ring of regular polygon, is surrounded by wheel.
The top of described parking seat is provided with decorative cover, this decorative cover is fixed by screws on the end face of parking seat, leave circular gap and short transverse gap between ball wheel car and decorative cover, circular gap is greater than valve breathing amount in the horizontal direction, and short transverse gap ensures the horizontal slip of ball wheel car energy.
Described car body top has flange, and this flange has the screw corresponding with valve ram's horn, is fixedly connected with by car body by bolt with valve ram's horn.
Between described car body and valve ram's horn, be provided with transition block, the fitting surface of this transition block and car body is sphere; Described bolt is stud bolt, and its following runs through the bolt hole of valve ram's horn, transition block, is spirally connected with car body flange, and its top is furnished with nut, is provided with spherical washer between nut and ram's horn.
Limited location mechanism between described supporting post and supporting base, spacing to protect spring when load is greater than spring load.
The beneficial effects of the utility model:
The supporting frame of the turbine high-pressure main steam control valve of said structure, can not only adapt to valve expanding with heat and contract with cold in short transverse, also can adapt to valve expanding with heat and contract with cold at horizontal 360-degree any direction, drastically increase the Security of valve.
Accompanying drawing explanation
Fig. 1 is that former high-pressure main steam regulating valve floats frame construction schematic diagram.
Fig. 2 is the supporting frame structural drawing of the utility model high-pressure main steam regulating valve, and wherein: Fig. 2-1 is plan view, Fig. 2-2 is E-E sectional views of Fig. 2-1.
Fig. 3 is the working state schematic representation of the supporting frame of the utility model high-pressure main steam regulating valve, wherein: phase diagram when Fig. 3-1 is cold conditions, and phase diagram when Fig. 3-2 is hot.
Embodiment
See Fig. 2 (i.e. Fig. 2-1, Fig. 2-2), the supporting frame of this turbine high-pressure main steam control valve, comprises supporting base 1, supporting post 2, is provided with cylindrical spring 3 in described supporting base 1, described supporting post 2 is seated on cylindrical spring 3, and this part is the basic structure continuing to use former floating framework.Only little improvement being done to it, i.e. limited location mechanism 15 between described supporting post 2 and supporting base 1, for limiting the lifting displacement amount of supporting post 2 in supporting base 1, to protect cylindrical spring 3, having made it avoid because overload damages.
Main feature of the present utility model is:
On the top of described supporting post 2, be also provided with ball wheel car 4 and parking seat 5 thereof, described parking seat 5 is fixed on the top of supporting post 2, and described ball wheel car 4 is parked on parking seat 5.
Described ball wheel car 4 comprises car body 4-1 and wheel, described wheel is made up of some steel ball 4-2 and retainer 4-3 thereof, and described steel ball 4-2 has multiple (this example is 8), is positioned at retainer 4-3, circumference is uniformly distributed, and described car body 4-1 is directly seated on the steel ball 4-2 of wheel.
Flange is arranged at described car body 4-1 top, this flange has the screw corresponding with valve ram's horn 8, is fixedly connected with by car body 4-1 by bolt 7 with valve ram's horn 8; Between described car body 4-1 and valve ram's horn 8, be provided with transition block 6, this transition block 6 is sphere with the fitting surface of car body 4-1; Described bolt 7 is stud bolts, and its following runs through the bolt hole of valve ram's horn 8, transition block 6, is spirally connected with car body flange, and its top is furnished with nut 14, is provided with spherical washer 13 between nut 14 and ram's horn 8, leaves gap a, to adapt to corner change during valve breathing.
Described parking seat 5 is disk-like structures, and Pan Ding has circular deep gouge, and described ball wheel car 4 is parked in this deep gouge, and during cold conditions, ball wheel car 4 is positioned at deep gouge center, and the ball wheel periphery of car 4 and the gap A of cell wall are greater than valve swell increment in the horizontal direction.The top of described parking seat 5 is provided with decorative cover 9, and prevent ball from taking turns car 4 and run off from deep gouge under fortuitous event, this this circle 9 is fixed on by screw 10 on the end face of parking seat 5, leaves circular gap A between ball wheel car 4 and decorative cover 9
,with short transverse gap B, circular gap A
,be greater than valve breathing amount in the horizontal direction, when short transverse gap B makes ball take turns car 4 displacement, do not stop by decorative cover 9.
Several pieces of (this example is 4 pieces) spring sheets 11 are equipped with in parking seat 5 deep gouge, be uniformly distributed along deep gouge inwall circumference, surround lopping, forming a sectional shape is the spring ring of regular polygon, wheel is surrounded, when ball wheel car 4 separating wheel, wheel can be made to keep chord position at ball vehicle seat center.
Parking seat 5 deep gouge wall is provided with the adjustment screw 12 of radial arrangement, when installing this framework, for adjusting the initial position of ball wheel car 4 on parking seat 5.
Working procedure of the present utility model:
See Fig. 3 (i.e. Fig. 3-1, Fig. 3-2), during cold conditions, ball wheel car 4 is positioned at parking seat 5 deep gouge center, time hot, valve expands, ball wheel car 4 is driven the synchronous shift consistent with valve horizontal expansion direction to occur, the swell increment of Absorbable rod valve horizontal 360-degree any direction, otherwise, by hot to cold conditions transition time, valve shrinks, and drives the oppositely displacement of ball wheel car 4, returns deep gouge center.No matter valve expands or shrinks, and framework remains vertical state.
The breathing amount of valve vertical direction, then absorbed by the floating of cylindrical spring 3, there is no need to go into details for its principle.
Claims (7)
1. a supporting frame for turbine high-pressure main steam control valve, comprises supporting base, supporting post, is provided with cylindrical spring in described supporting base, and described supporting post is seated on cylindrical spring, and cylindrical spring bears valve gravitational load and absorbs vertical direction thermal walking; It is characterized in that: on the top of described supporting post, also have ball wheel car and parking seat thereof, described parking seat is fixed on the top of supporting post, and described ball wheel car is parked on parking seat; Described ball wheel car comprises car body and spherical wheel, and described spherical wheel is arranged in the bottom surface of car body; The top of described car body connects with the ram's horn of modulating valve; When valve expands with heat and contract with cold, there is the synchronous shift consistent with valve horizontal breathing direction in ball wheel car, absorbs the breathing amount of valve horizontal 360-degree any direction, make framework remain vertical state.
2. the supporting frame of turbine high-pressure main steam control valve as claimed in claim 1, is characterized in that:
The wheel of described ball wheel car is made up of some steel balls and retainer thereof, and described steel ball is positioned at retainer, and circumference is uniformly distributed, and described car body is directly seated on the steel ball of wheel;
Described parking seat is disk-like structure, and Pan Ding has circular deep gouge, and described ball wheel car is parked in this deep gouge, and during cold conditions, ball wheel parking stall is in deep gouge center, and the gap of ball wheel car periphery and cell wall is greater than valve swell increment in the horizontal direction.
3. the supporting frame of turbine high-pressure main steam control valve as claimed in claim 2, is characterized in that, in parking seat deep gouge, be equipped with several pieces of spring sheets, be uniformly distributed along deep gouge inwall circumference, surround lopping, forming a sectional shape is the spring ring of regular polygon, is surrounded by wheel.
4. the supporting frame of turbine high-pressure main steam control valve as claimed in claim 2, it is characterized in that, the top of described parking seat is provided with decorative cover, this decorative cover is fixed by screws on the end face of parking seat, circular gap and short transverse gap is left between ball wheel car and decorative cover, circular gap is greater than valve breathing amount in the horizontal direction, and short transverse gap ensures the horizontal slip of ball wheel car energy.
5. the supporting frame of turbine high-pressure main steam control valve as claimed in claim 2, it is characterized in that, described car body top has flange, and this flange has the screw corresponding with valve ram's horn, is fixedly connected with by car body by bolt with valve ram's horn.
6. the supporting frame of turbine high-pressure main steam control valve as claimed in claim 5, it is characterized in that, between described car body and valve ram's horn, be provided with transition block, the fitting surface of this transition block and car body is sphere; Described bolt is stud bolt, and its following runs through the bolt hole of valve ram's horn, transition block, is spirally connected with car body flange, and its top is furnished with nut, is provided with spherical washer between nut and ram's horn.
7. the supporting frame of turbine high-pressure main steam control valve as claimed in claim 1, is characterized in that, limited location mechanism between described supporting post and supporting base, spacing to protect spring when load is greater than spring load.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520487143.XU CN204755003U (en) | 2015-07-08 | 2015-07-08 | Support framework of main vapour governing valve of steam turbine high pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520487143.XU CN204755003U (en) | 2015-07-08 | 2015-07-08 | Support framework of main vapour governing valve of steam turbine high pressure |
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| Publication Number | Publication Date |
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| CN204755003U true CN204755003U (en) | 2015-11-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520487143.XU Active CN204755003U (en) | 2015-07-08 | 2015-07-08 | Support framework of main vapour governing valve of steam turbine high pressure |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105545384A (en) * | 2016-02-05 | 2016-05-04 | 中国船舶重工集团公司第七�三研究所 | Flexible support of high-back-pressure turbine |
| CN105888745A (en) * | 2016-06-02 | 2016-08-24 | 东方电气集团东方汽轮机有限公司 | Floating valve bracket structure of steam turbine |
| CN106321171A (en) * | 2016-11-10 | 2017-01-11 | 中国船舶重工集团公司第七0三研究所 | Novel flexible support of high-back-pressure steam turbine |
| CN114108345A (en) * | 2021-11-19 | 2022-03-01 | 中车长春轨道客车股份有限公司 | Thermal stress relief structure |
-
2015
- 2015-07-08 CN CN201520487143.XU patent/CN204755003U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105545384A (en) * | 2016-02-05 | 2016-05-04 | 中国船舶重工集团公司第七�三研究所 | Flexible support of high-back-pressure turbine |
| CN105888745A (en) * | 2016-06-02 | 2016-08-24 | 东方电气集团东方汽轮机有限公司 | Floating valve bracket structure of steam turbine |
| CN106321171A (en) * | 2016-11-10 | 2017-01-11 | 中国船舶重工集团公司第七0三研究所 | Novel flexible support of high-back-pressure steam turbine |
| CN114108345A (en) * | 2021-11-19 | 2022-03-01 | 中车长春轨道客车股份有限公司 | Thermal stress relief structure |
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