CN207620958U - Guide vanes of water turbine end clearance adjusts structure - Google Patents
Guide vanes of water turbine end clearance adjusts structure Download PDFInfo
- Publication number
- CN207620958U CN207620958U CN201721767955.5U CN201721767955U CN207620958U CN 207620958 U CN207620958 U CN 207620958U CN 201721767955 U CN201721767955 U CN 201721767955U CN 207620958 U CN207620958 U CN 207620958U
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- CN
- China
- Prior art keywords
- pressure ring
- guide vane
- half pressure
- annular groove
- water turbine
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 37
- 210000004907 gland Anatomy 0.000 claims abstract description 24
- 230000000694 effects Effects 0.000 abstract description 12
- 230000006641 stabilisation Effects 0.000 abstract 1
- 238000011105 stabilization Methods 0.000 abstract 1
- 238000009434 installation Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 238000006073 displacement reaction Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000010977 unit operation Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
Landscapes
- Hydraulic Turbines (AREA)
Abstract
The utility model provides a kind of guide vanes of water turbine end clearance adjustment structure, and guide vane lever lower part is provided with annular groove, and being horizontally disposed in annular groove has point half pressure ring, and one end of point half pressure ring is fastened in annular groove, and the other end of point half pressure ring stretches out outside annular groove；It is provided with through-hole on point half pressure ring and positioned at the part stretched out outside annular groove, bolt assembly is equipped in through-hole, point half pressure ring is fixed on sleeve upper surface by bolt assembly；Cushion block is provided between guide vane teunnion upper surface and gland, and the height of cushion block is more than the depth of gland lower end groove, adjustment bolt is threaded through on gland, cushion block and guide vane teunnion vertically simultaneously.The utility model can adjust the gap between guide vane upper surface and head cover, guide vane lower face and base ring upward or downward, ensure that the gap uniformity between guide vane upper surface and head cover, guide vane lower face and base ring is consistent, and then reach the water loss for reducing unit, ensure unit safety, stabilization, the effect efficiently run.
Description
Technical field
The utility model is related to a kind of guide vanes of water turbine end clearances to adjust structure.
Background technology
Guide vanes of water turbine is mainly used for controlling the flow of turbine-generator units, while playing the role of being formed circular rector, and
In unit running process, the efficiency index and safe and stable operation of the end clearance of guide vanes of water turbine to entire turbine-generator units
There is vital influence.Therefore, how in guide vanes of water turbine manufacture, rationally control in installation process, adjust the hydraulic turbine and lead
Leaf end clearance is always one of the emphasis of those skilled in the art's concern.
Existing water turbine set, guide vane are installed on guide vane teunnion and between base ring and head cover, and guide vane teunnion is straight up
It extends at gland, the adjustment bolt for vertically adjusting guide vane teunnion is installed in guide vane teunnion upper surface.Conventional guide vanes of water turbine
End clearance adjustment mode is that bolt is adjusted, i.e., is adjusted between guide vane end face by adjusting the adjustment bolt of guide vane teunnion upper surface
Gap, but adjust by the adjustment bolt and upward simultaneously, downward can not adjust guide vane end clearance, so as to cause between guide vane end face
Gap is uneven, and leak is serious, and flow stability is poor, while being easy to cause guide vanes of water turbine end face and being generated with head cover or base ring end face
It scrapes, influences the stability of service life and unit operation.
CN104005899B disclose a kind of guide vanes of water turbine thrust gap adjustment structure, on the inside of top cap central bore and
Upside is installed with guide vane sleeve, and L-type movable guide vane is fixedly connected in the guide vane arm lower end of tubulose；L-type guide vane thrust
Ring tips upside down on the upside of L-type movable guide vane, and L-type guide vane thrust ring is fixed on the upside of guide vane sleeve and head cover；In L-type guide vane
In adjusting gap between thrust ring and guide vane sleeve, symmetrical pad is equipped with L-type wedge, horizontal at the turning position of L-type wedge
To adjusting screw rod is equipped with, the inner face of the adjusting screw rod is contacted with the L-type guide vane thrust ring outer end face；It is adjusting in gap
L-type guide vane thrust ring or guide vane sleeve end face on be provided with wedge-shaped impression；The flanging upper surface of L-type movable guide vane with
Pad is equipped with Upper gasket between L-type guide vane thrust ring lower face；In the flanging lower face of L-type movable guide vane and guide vane sleeve upper end
Pad is equipped with lower gasket between face, to which the thrust clearance C is the gap of Upper gasket and L-type guide vane thrust ring lower face, or is
The gap of lower gasket and L-type guide vane thrust ring upper surface.Although the structure can shorten regulating time to a certain extent,
Still it cannot achieve while up and down adjustment guide vane end clearance.
Utility model content
In order to solve the technical problems existing in the prior art, the purpose of this utility model is to provide a kind of hydraulic turbines to lead
End of blade face gap adjusting structure, with can realize with this configuration and meanwhile upwards, adjustment guide vane end clearance downwards.
To achieve the goals above, the utility model adopts the following technical solution.
A kind of guide vanes of water turbine end clearance adjustment structure, it is characterised in that：Guide vane lever lower part is provided with annular groove, in ring
Trough inner water is flat to be provided with point half pressure ring, and one end of point half pressure ring is fastened in annular groove, and the other end of point half pressure ring stretches out outside annular groove；
It is provided with through-hole on point half pressure ring and positioned at the part stretched out outside annular groove, bolt assembly is equipped in through-hole, divides half
Pressure ring is fixed on sleeve upper surface by bolt assembly；It is movably set with cushion block between guide vane teunnion upper surface and gland, and pads
The height of block is more than the depth of gland lower end groove, and adjustment bolt is threaded through on gland, cushion block and guide vane teunnion vertically simultaneously, loosens
Cushion block flexibly can take out and fill in after adjustment bolt.
In above-mentioned technical proposal, on the one hand, one end of point half pressure ring is fastened in annular groove, and point half pressure ring passes through bolt assembly
It is fixed on sleeve upper surface so that divide and form the structure fitted closely between half pressure ring and sleeve, guide vane teunnion, limit guide vane lever
It shifts up；On the other hand, adjustment bolt is threaded through vertically simultaneously on gland and guide vane teunnion, is guide vane by rotating adjustment bolt
Axis provides upward active force, makes the displacement of guide vane teunnion generation vertically upward；And it is placed between guide vane teunnion upper surface and gland
After height is more than the cushion block of gland lower end depth of groove, by rotating adjustment bolt, guide vane teunnion will be forced to generate vertically downward
Displacement.The mutual cooperation of each technical characteristic is able to adjust guide vane upper surface and top upward or downward in Pass through above-mentioned technical proposal
Gap between lid, guide vane lower face and base ring.
Can preferably to adjust guide vane end clearance, above-mentioned point of half pressure ring is made of the identical semicircular ring of two radiuses.
Can preferably to adjust guide vane end clearance, while facilitating installation, above-mentioned point of half pressure ring is identical by 3-6 radius
Fanning strip composition.
To save installation space, the outer rim of point half pressure ring and the outer wall of sleeve are located on same vertical line, that is, divide half pressure ring
Outer rim flushes in the vertical direction with the outer wall of sleeve.
Can preferably to adjust guide vane end clearance, it is provided with and point half pressure ring one in the lower face of above-mentioned point of half pressure ring
Body formed supporting leg, and the bottom end of supporting leg is fitted in sleeve upper surface.
To make half pressure ring of score have preferably support, limit effect, above-mentioned supporting leg is close to a point half pressure ring outer rim setting.
To make half pressure ring of score have preferably support, limit effect, the longitudinal section of above-mentioned annular groove is rectangular, and longitudinal section is in
The annular groove of rectangle can preferably engage point half pressure ring so that divide the cooperation of semicircular ring and annular groove more closely, to realize more
Limit effect well.
Advantageous effect：
The utility model passes through point half pressure ring and guide vane lever, sleeve and adjustment bolt, gland, cushion block and guide vane teunnion
Cooperate the gap that can be adjusted upward or downward between guide vane upper surface and head cover, guide vane lower face and base ring, and ensures
Its gap width is in regulating scope.
The utility model can accurately adjust guide vane end clearance, and Adjustment precision is up to 0.05mm, it is ensured that guide vane upper surface
Gap uniformity between head cover, guide vane lower face and base ring is consistent, and then reaches the water loss for reducing unit, ensures unit
Effect that is safe and stable, efficiently running.
The utility model increases annular groove, point half pressure ring and bolt only on original guide vane lever, and is incorporated on guide vane teunnion
The cushion block added between end face and gland can be realized as adjusting clearance between guide vanes upward or downward, simple in structure, installation, dismounting side
Just.
Utility model has good stability, saves space.
Description of the drawings
Fig. 1 is the schematic diagram (one) of adjustment structure in guide vanes of water turbine end clearance in the utility model embodiment；
Fig. 2 is the schematic diagram (two) of adjustment structure in guide vanes of water turbine end clearance in the utility model embodiment；
Fig. 3 is the schematic diagram of point semicircular ring of guide vanes of water turbine end clearance adjustment structure in the utility model embodiment 1；
Fig. 4 is point semicircular ring and guide vane lever of adjustment structure in guide vanes of water turbine end clearance in the utility model embodiment 1
Schematic diagram when cooperation；
Fig. 5 is the schematic diagram of point semicircular ring of guide vanes of water turbine end clearance adjustment structure in the utility model embodiment 2；
Fig. 6 is the schematic diagram of point semicircular ring of guide vanes of water turbine end clearance adjustment structure in the utility model embodiment 3；
Fig. 7 is that the longitudinal section of point semicircular ring of guide vanes of water turbine end clearance adjustment structure in the utility model embodiment shows
It is intended to.
Specific implementation mode
The utility model is described in further detail in the following with reference to the drawings and specific embodiments, but the explanation of following embodiment is only
It is to be used to help understand the principles of the present invention and its core concept, not to the restriction of scope of protection of the utility model.It answers
When pointing out, for those skilled in the art, without departing from the principle of this utility model, for this
The improvement that utility model carries out is also fallen into the protection domain of the utility model claims.
Embodiment 1
A kind of guide vanes of water turbine end clearance adjustment structure is provided with annular groove in 4 lower part of guide vane lever as depicted in figs. 1 and 2
10, being horizontally disposed in annular groove 10 has point half pressure ring 6, and one end of point half pressure ring 6 is fastened in annular groove 10, divides the another of half pressure ring 6
One end is stretched out outside annular groove 10；It is provided with through-hole 11 on point half pressure ring 6 and positioned at the part stretched out outside annular groove 10, in through-hole 11
It is equipped with bolt assembly 12, point half pressure ring 6 is fixed on 7 upper surface of sleeve by bolt assembly 12；In 5 upper surface of guide vane teunnion
Cushion block 2 is movably set between gland 3, and the height of cushion block 2 is more than the depth of 3 lower end groove 14 of gland, adjustment bolt 1 is same
Shi Shuzhi is threaded through gland 3, cushion block 2 on guide vane teunnion 5, and cushion block 2 flexibly can take out and fill in after loosening adjustment bolt 1.
Can preferably to adjust guide vane end clearance, while facilitating installation, as shown in figure 3, above-mentioned point of half pressure ring 6 is by four
The identical fanning strip 602 of a radius forms.
To save installation space, the outer rim of point half pressure ring 6 is located at the outer wall of sleeve 7 on same vertical line, that is, divides half pressure ring 6
Outer rim flushed in the vertical direction with the outer wall of sleeve 7, as shown in Figure 7.
Can preferably to adjust guide vane end clearance, it is provided with and point half pressure ring 6 in the lower face of above-mentioned point of half pressure ring 6
Integrally formed supporting leg 13, and the bottom end of supporting leg 13 is fitted in 7 upper surface of sleeve.
To make half pressure ring 6 of score have preferably support, limit effect, above-mentioned supporting leg 13 (outer close to point half pressure ring, 6 outer rim
Edge) setting.
To make half pressure ring 6 of score have preferably support, limit effect, as shown in figs. 4 and 7, above-mentioned annular groove 10 is indulged
Rectangular in cross-section, the rectangular annular groove 10 in longitudinal section can preferably engage point half pressure ring 6 so that divide semicircular ring and annular groove 10
Coordinate more closely, to realize preferably limit effect.The longitudinal section of above-mentioned point of half pressure ring 6 is L-shaped, the water of point half pressure ring 6
Flat section can be just fitted close after being inserted into annular groove 10 with annular groove 10.
Embodiment 2
A kind of guide vanes of water turbine end clearance adjustment structure is provided with annular groove in 4 lower part of guide vane lever as depicted in figs. 1 and 2
10, being horizontally disposed in annular groove 10 has point half pressure ring 6, and one end of point half pressure ring 6 is fastened in annular groove 10, divides the another of half pressure ring 6
One end is stretched out outside annular groove 10；It is provided with through-hole 11 on point half pressure ring 6 and positioned at the part stretched out outside annular groove 10, in through-hole 11
It is equipped with bolt assembly 12, point half pressure ring 6 is fixed on 7 upper surface of sleeve by bolt assembly 12；In 5 upper surface of guide vane teunnion
Cushion block 2 is movably set between gland 3, and the height of cushion block 2 is more than the depth of 3 lower end groove 14 of gland, adjustment bolt 1 is same
Shi Shuzhi is threaded through gland 3, cushion block 2 on guide vane teunnion 5, and cushion block 2 flexibly can take out and fill in after loosening adjustment bolt 1.
Can preferably to adjust guide vane end clearance, while facilitating installation, as shown in figure 5, above-mentioned point of half pressure ring 6 is by six
The identical fanning strip 602 of a radius forms.
To save installation space, the outer rim of point half pressure ring 6 is located at the outer wall of sleeve 7 on same vertical line, that is, divides half pressure ring 6
Outer rim flushed in the vertical direction with the outer wall of sleeve 7.
Can preferably to adjust guide vane end clearance, it is provided with and point half pressure ring 6 in the lower face of above-mentioned point of half pressure ring 6
Integrally formed supporting leg 13, and the bottom end of supporting leg 13 is fitted in 7 upper surface of sleeve.
To make half pressure ring 6 of score have preferably support, limit effect, above-mentioned supporting leg 13 (outer close to point half pressure ring, 6 outer rim
Edge) setting.
To make half pressure ring 6 of score have preferably support, limit effect, the longitudinal section of above-mentioned annular groove 10 is rectangular, indulges and cuts
The rectangular annular groove 10 in face can preferably engage point half pressure ring 6 so that divide the cooperation of semicircular ring and annular groove 10 more closely, from
And realize preferably limit effect.
Embodiment 3
In above-described embodiment 1, described point of half pressure ring 6 is made of the identical fanning strip of three radiuses 602.
Embodiment 4
In above-described embodiment 1, described point of half pressure ring 6 is made of the identical fanning strip of two radiuses 601, as shown in Figure 6.
Use/adjusting method of above-mentioned guide vanes of water turbine end clearance adjustment structure：When guide vanes of water turbine upper surface and top
When gap between lid is less than the gap between its lower face and base ring, guide vane need to be lowered, it is only necessary to tighten adjustment bolt 1, together
Shi Caiyong clearance gauges check the gap between guide vanes of water turbine upper surface and head cover, guide vane lower face and base ring；Work as guide vanes of water turbine
When gap between upper surface and head cover is more than the gap between its lower face and base ring, guide vane need to be raised, it is only necessary to first take out
The cushion block 2 being movably arranged between 5 upper surface of guide vane teunnion and gland 3, then adjustment bolt 1 is tightened, while water is checked using clearance gauge
It asks in gap between turbine guide vane upper surface and head cover, guide vane lower face and base ring；According to code requirement, when the two gap difference
Control meets the requirements when within 0.15-0.40mm, and its gap control errors can be existed using the utility model
Within 0.05mm.
In above-described embodiment, one end of point half pressure ring 6 is fastened in annular groove 10, and point half pressure ring 6 is solid by bolt assembly 12
It is scheduled on 7 upper surface of sleeve so that divide and form the structure fitted closely between half pressure ring 6 and sleeve 7, guide vane teunnion 5, limit guide vane
Arm 4 shifts up；Adjustment bolt 1 is threaded through vertically simultaneously on gland 3 and guide vane teunnion 5, is guide vane teunnion by rotating adjustment bolt 1
5 provide upward active force, make the displacement of the generation of guide vane teunnion 5 vertically upward；And it is placed between 5 upper surface of guide vane teunnion and gland 3
After thering is height to be more than the cushion block 2 of 3 lower end groove of gland, 14 depth, by rotating adjustment bolt 1, guide vane teunnion 5 will be forced to generate and hung down
Straight downward displacement.The mutual cooperation of each technical characteristic is able to by adjusting adjustment bolt 1 i.e. in Pass through above-mentioned technical proposal
The gap between guide vane upper surface and head cover 8, guide vane lower face and base ring 9 is adjusted upward or downward.
Claims (7)
1. guide vanes of water turbine end clearance adjusts structure, it is characterised in that：In guide vane lever（4）Lower part is provided with annular groove（10）,
Annular groove（10）Interior be horizontally disposed with has point half pressure ring（6）, point half pressure ring（6）One end be fastened on annular groove（10）It is interior, point half pressure ring（6）
The other end stretch out annular groove（10）Outside；In point half pressure ring（6）Above and positioned at stretching annular groove（10）Outer part is provided with through-hole
（11）, in through-hole（11）Inside it is equipped with bolt assembly（12）, point half pressure ring（6）Pass through bolt assembly（12）It is fixed on sleeve
（7）Upper surface；In guide vane teunnion（5）Upper surface and gland（3）Between be provided with cushion block（2）, and cushion block（2）Height be more than pressure
Lid（3）Lower end groove（14）Depth, adjustment bolt（1）It is threaded through gland vertically simultaneously（3）, cushion block（2）With guide vane teunnion（5）
On.
2. guide vanes of water turbine end clearance according to claim 1 adjusts structure, it is characterised in that：Described point of half pressure ring
（6）By the identical semicircular ring of two radiuses（601）Composition.
3. guide vanes of water turbine end clearance according to claim 1 adjusts structure, it is characterised in that：Described point of half pressure ring
（6）By the identical fanning strip of 3-6 radius（602）Composition.
4. guide vanes of water turbine end clearance according to claim 1,2 or 3 adjusts structure, it is characterised in that：Described point half
Pressure ring（6）Outer rim and the sleeve（7）Outer wall be located on same vertical line.
5. guide vanes of water turbine end clearance according to claim 4 adjusts structure, it is characterised in that：Described point of half pressure ring
（6）Lower face be provided with and described point of half pressure ring（6）Integrally formed supporting leg（13）, and supporting leg（13）Bottom end be fitted in institute
State sleeve（7）Upper surface.
6. guide vanes of water turbine end clearance according to claim 5 adjusts structure, it is characterised in that：The supporting leg（13）It leans on
Nearly described point of half pressure ring（6）Outer rim setting.
7. guide vanes of water turbine end clearance according to claim 6 adjusts structure, it is characterised in that：The annular groove（10）'s
Longitudinal section is rectangular.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721767955.5U CN207620958U (en) | 2017-12-18 | 2017-12-18 | Guide vanes of water turbine end clearance adjusts structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721767955.5U CN207620958U (en) | 2017-12-18 | 2017-12-18 | Guide vanes of water turbine end clearance adjusts structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207620958U true CN207620958U (en) | 2018-07-17 |
Family
ID=62820739
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721767955.5U Expired - Fee Related CN207620958U (en) | 2017-12-18 | 2017-12-18 | Guide vanes of water turbine end clearance adjusts structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207620958U (en) |
-
2017
- 2017-12-18 CN CN201721767955.5U patent/CN207620958U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180717 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |