CN206845231U - Fixed blade for steam turbine ring - Google Patents
Fixed blade for steam turbine ring Download PDFInfo
- Publication number
- CN206845231U CN206845231U CN201720744430.3U CN201720744430U CN206845231U CN 206845231 U CN206845231 U CN 206845231U CN 201720744430 U CN201720744430 U CN 201720744430U CN 206845231 U CN206845231 U CN 206845231U
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- CN
- China
- Prior art keywords
- ring
- fixed blade
- outer shroud
- installation cavity
- fix bar
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
The utility model discloses a kind of fixed blade for steam turbine ring, its drip irrigation device is to include ring body, and it is circumferentially provided on some locating slots on inner wall of ring body, fixed blade ring is mounted in each locating slot, each fixed blade ring includes some ring segments, each ring segment includes the chimeric outer shroud being arranged in locating slot, and some stator blade bodies on outer shroud, Access Division is provided between the end of two neighboring outer shroud, Access Division includes being located therein the buckling groove of an outer shroud one end, and located at another clamping block of outer shroud one end to coordinate with buckling groove, installation cavity is offered in ring body, the fix bar that end is arranged in buckling groove and clamping block respectively is slidably fitted with installation cavity, the drive division for being used for driving fix bar to slide is provided with installation cavity.Drive fix bar to slide by drive division, the ring segment of two neighboring splicing is fixed, so as to effectively increase the installation effectiveness of fixed blade ring, avoids each ring segment that the decline for causing installation effectiveness is fixed.
Description
Technical field
Steam turbine field is the utility model is related to, more particularly to a kind of fixed blade for steam turbine ring.
Background technology
Forcing press be it is a kind of using rotating mechanical energy to flow through it air do work, with improve the impeller of air pressure dress
Put.Typical compressor for gas turbine is generally multiatage axial flow, per one-level by rotor blade row and a stator leaf
Piece row is formed, and generally, each stator blade end of stator blade row is all connected on an outer shroud to form the fixed blade ring of monoblock type.
Wherein, the fixed blade ring of monoblock type can circumferentially be divided into several ring segments, and during installation, each ring segment circumferentially slides into forcing press shell
In circumferential groove.
At present, in order to avoid ring segment, circumferential play, existing technical scheme are to use radial positioning in shell circumferential groove
Sell fixed blade ring ring segment to be fixed, and need an alignment pin to fix a ring segment, such a fixed form, cause stator blade
The installation process of ring ring segment is various and needs alignment pin quantity to be mounted excessive, greatly reduces the installation effectiveness of fixed blade ring, because
Certain improvements be present in this.
Utility model content
In view of the deficienciess of the prior art, the purpose of this utility model is to provide a kind of fixed blade for steam turbine ring, have
The characteristics of installation effectiveness is high.
Above-mentioned technical purpose of the present utility model technical scheme is that：
A kind of fixed blade for steam turbine ring, including ring body and some locating slots for being circumferentially provided on inner wall of ring body, Mei Geding
Fixed blade ring is mounted in the groove of position, each fixed blade ring includes some ring segments, and each ring segment includes being fitted together to being arranged on locating slot
In outer shroud and some stator blade bodies on outer shroud, be provided with Access Division, the card between the end of two neighboring outer shroud
Socket part includes being located therein the buckling groove of outer shroud one end and located at another card of outer shroud one end with buckling groove to coordinate
Block is connect, installation cavity is offered in the ring body, be slidably fitted with end in the installation cavity is arranged in buckling groove and clamping respectively
The fix bar of block, the drive division for being used for driving fix bar to slide is provided with the installation cavity.
Pass through above-mentioned technical proposal, during installation, the outer shroud in each ring segment is circumferentially slided into locating slot, adjacent to cause
Two outer shrouds are mutually abutted by buckling groove and clamping block, and now, drive division drives fix bar to be slided along installation cavity so that Gu
The end of fixed pole is arranged in buckling groove and clamping block respectively, so that two neighboring outer shroud is fixed on inner wall of ring body, completes
Ring segment is arranged in ring body, and circumferential slip will not will occur in the presence of fix bar in locating slot for ring segment；The application passes through
The two neighboring ring segment spliced is fixed fix bar, so as to effectively increase the installation effectiveness of fixed blade ring, avoids each
The decline for causing installation effectiveness is all fixed in ring segment.
Preferably, the drive division includes the rotating shaft being rotatably installed in installation cavity and is coaxially mounted in rotating shaft
Some grooves are distributed with gear and worm gear, the fix bar along its length, and the gear is meshed with groove, the installation
The worm screw for being engaged with worm gear is also rotatably connected in chamber.
Pass through above-mentioned technical proposal, staff drive worm screw to rotate, and worm screw will drive worm gear wheel, and thus, worm gear will
Coaxial mounted pinion rotation is driven, gear is meshed with groove, therefore fix bar can slide up and down along in installation cavity, and
By the characteristic of worm and wheel self-locking, i.e., worm screw can drive worm gear wheel, and worm gear can not drive worm screw to rotate, and be carried with this
High fix bar fixes the effect of two neighboring mutually splicing ring segment.
Preferably, the cover plate for closing installation cavity is bolted in the ring body.
Pass through above-mentioned technical proposal, cover plate carry out closing installation cavity by bolt, and driving is maintained easily by dismantling cover plate
Portion.
Preferably, through cover plate to be flush with lid surface, the end of the worm screw offers for the end of the worm screw
Flat recess.
Pass through above-mentioned technical proposal, flat recess provide the extra impetus of worm screw, facilitate staff's rotary worm.
Preferably, the cross section of the locating slot is set in L-shaped.
Pass through above-mentioned technical proposal, the locating slot of L-shaped is simple in construction, and the locating slot of L-shaped is towards steam inflow side
To good fixing effect.
In summary, the utility model having the beneficial effect that in contrast to prior art：
Drive fix bar to slide by drive division, the ring segment of two neighboring splicing is fixed, so as to effectively increase
The installation effectiveness of fixed blade ring, avoid each ring segment that the decline for causing installation effectiveness is fixed.
Brief description of the drawings
Fig. 1 is the structural representation of embodiment；
Fig. 2 is the structural representation of fixed blade ring；
Fig. 3 is the scheme of installation of fixed blade ring；
Fig. 4 is the enlarged diagram in A portions in Fig. 3.
Reference：1st, ring body；101st, upper ring body；102nd, lower ring body；2nd, locating slot；3rd, fixed blade ring；31st, ring segment；311、
Outer shroud；312nd, stator blade body；4th, Access Division；41st, buckling groove；42nd, clamping block；5th, the first mounting groove；6th, the second mounting groove；7th, install
Chamber；8th, fix bar；9th, drive division；91st, rotating shaft；92nd, gear；93rd, worm gear；94th, groove；95th, worm screw；10th, cover plate；11st, a word
Groove.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing.
As shown in figure 1, a kind of fixed blade for steam turbine ring, including ring body 1 and it is circumferentially provided on some on the inwall of ring body 1
Locating slot 2, the cross section of locating slot 2 are set in L-shaped, are mounted on fixed blade ring 3 in each locating slot 2, in the present embodiment, ring
Body 1 includes upper ring body 101 and lower ring body 102, and accordingly, locating slot 2 is divided into locating slot 2 and lower locating slot 2, upper ring body
Fastened between 101 and lower ring body 102 by bolt.
As shown in Fig. 2 each fixed blade ring 3 includes some ring segments 31, in the present embodiment, each fixed blade ring 3 is divided into
Two ring segments 31 are separately installed with four ring segments 31, upper locating slot 2 and lower locating slot 2.
With reference to shown in Fig. 3 and Fig. 4, each ring segment 31 includes outer shroud 311 and some stator blade bodies 312, the chimeric peace of outer shroud 311
In locating slot 2, some stator blade bodies 312 are fixedly mounted on outer shroud 311, are provided between the end of two neighboring outer shroud 311
Access Division 4, Access Division 4 include being located therein the buckling groove 41 of one end of outer shroud 311 and located at another outer shroud 311 1
Hold clamping block 42 to coordinate with buckling groove 41, wherein, one end of one of outer shroud 311 provided with through outer shroud 311 with
The first mounting groove 5 that buckling groove 41 communicates, the second mounting groove 6 is offered on clamping block 42.Installation cavity 7 is offered in ring body 1, is pacified
Fix bar 8 is slidably fitted with 7 cavity wall of behaveing affectedly, when ring segment 31 is circumferentially slipped into locating slot 2, the end of fix bar 8
It is relative with the first mounting groove 5.Wherein, the drive division 9 for being used for driving fix bar 8 to slide is provided with installation cavity 7, is inserted in clamping block 42
When being connected in buckling groove 41, the first mounting groove 5 communicates with the second mounting groove 6, and fix bar 8 is under the driving of drive division 9, fix bar
Sliding be inserted into the first mounting groove 5 and the second mounting groove 6 completes two neighboring ring segment 31 in locating slot 2 respectively for 8 end
It is circumferentially fixed.
As shown in figure 4, drive division 9 includes the rotating shaft 91 being rotatably installed in installation cavity 7, gear 92 is installed in rotating shaft 91
With worm gear 93, concentric setting between gear 92 and worm gear 93, some grooves 94, tooth is distributed with fix bar 8 along its length
Wheel 92 is meshed with groove 94, and the worm screw 95 for being engaged with worm gear 93 is also rotatably connected in installation cavity 7.In the present embodiment,
Be bolted the cover plate 10 for closing installation cavity 7 in ring body 1, the end of worm screw 95 through cover plate 10 with cover plate 10
Surface is flush, and the end of worm screw 95 offers flat recess 11.
The course of work：
During installation, the outer shroud 311 in each ring segment 31 is circumferentially slided into locating slot 2, to cause two neighboring outer shroud 311
Mutually abutted by buckling groove 41 and clamping block 42, now, drive division 9 drives fix bar 8 to be slided along installation cavity 7 so that Gu
Cunning is inserted into the first mounting groove 5 and the second mounting groove 6 respectively for the end of fixed pole 8, so that two neighboring outer shroud 311 is solid
It is scheduled on the inwall of ring body 1, completes ring segment 31 and be arranged in ring body 1, ring segment 31 will will not be in locating slot in the presence of fix bar 8
Circumferential slip occurs in 2, the two neighboring ring segment 31 spliced is fixed by fix bar 8 by the application, so as to effectively carry
The high installation effectiveness of fixed blade ring 3, avoids each ring segment 31 that the decline for causing installation effectiveness is fixed.
Described above is only exemplary embodiment of the present utility model, not for limitation protection model of the present utility model
Enclose, the scope of protection of the utility model is determined by appended claim.
Claims (5)
1. a kind of fixed blade for steam turbine ring, including ring body (1) and some locating slots for being circumferentially provided on ring body (1) inwall
(2) fixed blade ring (3), is mounted in each locating slot (2), each fixed blade ring (3) includes some ring segments (31), each ring segment
(31) the chimeric outer shroud (311) being arranged in locating slot (2) and some stator blade bodies on outer shroud (311) are included
(312), it is characterized in that, Access Division (4) are provided between the end of two neighboring outer shroud (311), the Access Division (4) includes being located at
The buckling groove (41) of one of outer shroud (311) one end and located at another outer shroud (311) one end to match somebody with somebody with buckling groove (41)
The clamping block (42) of conjunction, installation cavity (7) is offered in the ring body (1), end difference is slidably fitted with the installation cavity (7)
The fix bar (8) of buckling groove (41) and clamping block (42) is arranged in, is provided with the installation cavity (7) and is used to drive fix bar (8)
The drive division (9) of slip.
2. fixed blade for steam turbine ring according to claim 1, it is characterized in that, the drive division (9) includes being rotatably installed in peace
The rotating shaft (91) behaveing affectedly in (7) and the gear (92) and worm gear (93) that are coaxially mounted in rotating shaft (91), the fix bar
(8) some grooves (94) are distributed with along its length, the gear (92) is meshed with groove (94), the installation cavity (7)
In be also rotatably connected to for the worm screw (95) that is engaged with worm gear (93).
3. fixed blade for steam turbine ring according to claim 2, it is characterized in that, it is bolted on the ring body (1) useful
In the cover plate (10) of closing installation cavity (7).
4. fixed blade for steam turbine ring according to claim 3, it is characterized in that, the end of the worm screw (95) passes through cover plate (10)
To be flush with cover plate (10) surface, the end of the worm screw (95) offers flat recess (11).
5. fixed blade for steam turbine ring according to claim 1, it is characterized in that, the cross section of the locating slot (2) is set in L-shaped
Put.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720744430.3U CN206845231U (en) | 2017-06-23 | 2017-06-23 | Fixed blade for steam turbine ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720744430.3U CN206845231U (en) | 2017-06-23 | 2017-06-23 | Fixed blade for steam turbine ring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206845231U true CN206845231U (en) | 2018-01-05 |
Family
ID=60802183
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720744430.3U Active CN206845231U (en) | 2017-06-23 | 2017-06-23 | Fixed blade for steam turbine ring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206845231U (en) |
-
2017
- 2017-06-23 CN CN201720744430.3U patent/CN206845231U/en active Active
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