CN109441568A - A kind of efficient low voltage partition plate covering device and its assembly method - Google Patents
A kind of efficient low voltage partition plate covering device and its assembly method Download PDFInfo
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- CN109441568A CN109441568A CN201811369362.2A CN201811369362A CN109441568A CN 109441568 A CN109441568 A CN 109441568A CN 201811369362 A CN201811369362 A CN 201811369362A CN 109441568 A CN109441568 A CN 109441568A
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- 238000005192 partition Methods 0.000 title claims abstract description 49
- 238000000034 method Methods 0.000 title claims abstract description 23
- 238000012856 packing Methods 0.000 claims abstract description 98
- 238000007789 sealing Methods 0.000 claims abstract description 6
- 238000005242 forging Methods 0.000 claims description 12
- 230000002093 peripheral effect Effects 0.000 claims description 11
- 238000005266 casting Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
- F01D25/28—Supporting or mounting arrangements, e.g. for turbine casing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P6/00—Restoring or reconditioning objects
- B23P6/02—Pistons or cylinders
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D11/00—Preventing or minimising internal leakage of working-fluid, e.g. between stages
- F01D11/003—Preventing or minimising internal leakage of working-fluid, e.g. between stages by packing rings; Mechanical seals
Abstract
The present invention relates to a kind of efficient low voltage partition plate covering device and its assembly method, first order assembled stator blade, second level assembled stator blade and third level assembled stator blade are assembled with upper half and lower half diaphragm housing ring respectively；First order assembled stator blade packing, second level assembled stator blade packing and third level assembled stator blade packing are assembled with first order assembled stator blade, second level assembled stator blade and third level assembled stator blade respectively；Packing is assembled with upper half and lower half diaphragm housing ring respectively at the top of packing, second level top packing and the third level at the top of the first order；First order assembled stator blade caulking strip, second level assembled stator blade caulking strip and third level assembled stator blade caulking strip are assembled with first order assembled stator blade, second level assembled stator blade and third level assembled stator blade and upper half and lower half diaphragm housing ring respectively.There is steam leakage in the sealing surface that the present invention can prevent low voltage partition plate from covering, guarantees the rigidity of low voltage partition plate set, prevents to deform.
Description
Technical field
The present invention relates to a kind of efficient low voltage partition plate covering device and its assembly methods, belong to the low pressure flow passage of steam turbine
Component.
Background technique
When steam turbine actual motion, the steam parameter into low-pressure internal cylinder is reduced, and the volume flow of steam is caused to increase, into
And make becoming large-sized for low-pressure internal cylinder, and total weight is larger, and the rigidity for keeping it whole reduces, especially when unusual service condition is run,
Low-pressure internal cylinder is also easy to produce deformation, so that the low voltage partition plate set being supported on low-pressure internal cylinder deviates former design position, causes in low pressure
The sealing surface that cylinder is covered with low voltage partition plate leaks, and high parameter steam is caused not do work and leak to next stage, so that flow efficiency
It reduces, influences the economical operation of unit, such as application No. is 201711341138.8 Chinese patents.
Summary of the invention
It is an object of the invention to overcome the above deficiencies in the existing technologies, and provide a kind of efficient low pressure every
Sleeve-board device and its assembly method.
Technical solution used by the present invention solves the above problems is: a kind of efficient low voltage partition plate covering device, including
Superior hemiseptum set and lower semi-diaphragm set, the superior hemiseptum set and lower semi-diaphragm set are assembled with low-pressure internal cylinder and are fixed；Its feature
Be, further include first order assembled stator blade, second level assembled stator blade, third level assembled stator blade, packing at the top of the first order,
Packing, the third level top packing, first order assembled stator blade packing, second level assembled stator blade packing, third at the top of the second level
Grade assembled stator blade packing, first order assembled stator blade caulking strip, second level assembled stator blade caulking strip and third level assembled
Stator blade caulking strip；The superior hemiseptum set is mutually fixed with lower semi-diaphragm set, and first order assembled stator blade, second level assembled are quiet
Leaf and third level assembled stator blade are assemblied in superior hemiseptum set and lower semi-diaphragm set, the first order assembled stator blade, second
Grade assembled stator blade and third level assembled stator blade pass through first order assembled stator blade caulking strip, second level assembled stator blade respectively
Caulking strip and third level assembled stator blade caulking strip are fixed, the first order assembled stator blade packing, second level assembled stator blade
Packing and third level assembled stator blade packing are separately mounted to first order assembled stator blade, second level assembled stator blade and the third level
In assembled stator blade；Packing at the top of the first order, at the top of the second level at the top of packing and the third level packing be also fitted with upper half every
In sleeve-board and lower semi-diaphragm set, and packing at the top of the first order, packing at the top of the second level, at the top of the third level packing respectively with the first order
Assembled stator blade, second level assembled stator blade, third level assembled stator blade are adjacently positioned；The superior hemiseptum set and lower semi-diaphragm
First order zero clearance steam seal ring and second level zero clearance steam seal ring, the first order zero clearance are installed between set and low-pressure internal cylinder
Steam seal ring and second level zero clearance steam seal ring are internally provided with elastomeric element, for by first order zero clearance steam seal ring and second
Grade zero clearance steam seal ring presses to low-pressure internal cylinder, it is ensured that in first order zero clearance steam seal ring and second level zero clearance steam seal ring and low pressure
Cylinder contacts always, prevents steam from leaking.
Furthermore, superior hemiseptum set and lower semi-diaphragm set are that Mechanical processing of casting forms, and in being provided with point
Face flange；The superior hemiseptum set and lower semi-diaphragm set pass through connection bolt, cover nut, upper spheric washer and lower peripheral surface washer phase
Fixed, the connection bolt sequentially passes through spheric washer, lower peripheral surface washer and superior hemiseptum and covers and enter in lower semi-diaphragm set,
The cover nut is set in the end of connection bolt, and cover nut is in contact with upper spheric washer.
Furthermore, the first order assembled stator blade, second level assembled stator blade and third level assembled stator blade are equal
It is made of a certain number of single blades, the single blade forms for forging process, and single blade is separately mounted to upper half
Partition body and lower semi-diaphragm set are internal.Single blade as requested after the assembly is completed, in the quiet of vane tip and partition body
Stator blade caulking strip is filled in leaf slot, respectively with fixed blade.
Furthermore, the low-pressure internal cylinder is covered with superior hemiseptum or lower semi-diaphragm set is also mutually fixed by radial peg, and
Radial peg is fixed by check bolt；The radial peg forms for forging process, and partition covering device includes two diameters altogether
To pin, radial positioning partition covering device when for being assembled with low-pressure internal cylinder.
It furthermore, further include upper holding bolt, top cushion block, lower holding bolt, lower part cushion block, adjustment gasket
With support fixing bolt；The check bolt, top cushion block, lower part cushion block, upper holding bolt, lower holding bolt, adjustment
Gasket and support fixing bolt are that forging process forms, and the two sides of the partition covering device are by split flanged lap joint low
Inner casing lower half is pressed, and is positioned by adjusting gasket, is fixed by top cushion block, lower part cushion block, upper holding bolt, lower part
Partition covering device is fixed on low-pressure internal cylinder lower half by bolt and support fixing bolt.
Furthermore, first order zero clearance steam seal ring and second level zero clearance steam seal ring form for forging process,
For contact packing；After partition covering device and low-pressure internal cylinder assembly, first order zero clearance steam seal ring and second level zero clearance vapour
Seal is influenced by spring force and is closely labelled in the cambered surface of low-pressure internal cylinder, and sealing function is played.
The assembly method of above-mentioned efficient low voltage partition plate covering device is as follows: by first order assembled stator blade, the second level
Assembled stator blade and third level assembled stator blade are respectively charged into superior hemiseptum set and lower semi-diaphragm set, pass through first order assembled
Stator blade caulking strip, second level assembled stator blade caulking strip and third level assembled stator blade caulking strip stopper assembled stator blades at different levels
And it is fixed；Then by first order assembled stator blade packing, second level assembled stator blade packing and third level assembled stator blade packing
It is respectively installed on first order assembled stator blade, second level assembled stator blade and third level assembled stator blade, and it is solid to carry out caulk
It is fixed；By packing is respectively installed to superior hemiseptum set and lower half at the top of packing, second level top packing and the third level at the top of the first order
Diaphragm housing ring, and carry out caulk and fix.
Low voltage partition plate set carries out axially position by positioning surface with low-pressure internal cylinder, while playing sealed steam prevents steam from letting out
The effect of leakage；After preventing low-pressure internal cylinder from deforming, low voltage partition plate, which covers to occur deforming with the positioning surface of low-pressure internal cylinder, causes steam to be let out
Leakage designs zero clearance steam seal ring in the low-pressure side of positioning surface, is internally provided with spring, steam seal ring is pressed to low pressure by spring force
Inner casing, it is ensured that contact always, the positioning surface covered by low-pressure internal cylinder and low voltage partition plate can be further prevented to generate due to deformation in this way
Steam leakage, guarantees the design efficiency of low voltage partition plate set.
Lower semi-diaphragm set is attached by the lug of split flange with low-pressure internal cylinder lower half, and gasket, lower part will be adjusted
Cushion block and lower holding bolt are mounted in the lug slot of low-pressure internal cylinder lower half, then lower semi-diaphragm set is placed on lower part cushion block
On, it is fixed in low-pressure internal cylinder lower half after adjusting absolute altitude by support fixing bolt, then again consolidates top cushion block and top
Determine bolt and be fixed to lower semi-diaphragm to put on, then superior hemiseptum set is passed through into connection bolt, cover nut, upper spheric washer and lower peripheral surface
Washer and lower semi-diaphragm pack into luggage with fixing, and are assembled again with low-pressure internal cylinder upper half later.
Furthermore, first order assembled stator blade, second level assembled stator blade and third level assembled stator blade have assembled
Cheng Hou connects superior hemiseptum set and lower semi-diaphragm set by connection bolt, cover nut, upper spheric washer and lower peripheral surface washer
Fixation is connect, is become after an entirety again to first order assembled stator blade, second level assembled stator blade and third level assembled stator blade
Root packing slot and the first order at the top of packing slot, packing slot carries out finishing at the top of packing slot and the third level at the top of the second level
Work installs first order assembled stator blade packing, second level assembled stator blade packing, third level assembled stator blade vapour respectively later
Packing at the top of packing, second level top packing and the third level at the top of envelope, the first order, then overall processing is carried out to all packings.
Compared with prior art, the present invention having the following advantages that and effect: of the invention is simple and reasonable, passes through design
Zero clearance seal circle is cooperated with low-pressure internal cylinder, and steam leakage occurs in the sealing surface for preventing low voltage partition plate from covering；It is set by improving
The split of meter overlaps support construction, guarantees the rigidity of low voltage partition plate set, prevents to deform, and then guarantees low voltage partition plate set
Design efficiency.
Detailed description of the invention
Fig. 1 is the low voltage partition plate set cross-sectional view of the embodiment of the present invention.
Fig. 2 is that stator blade caulking strip assembles enlarged drawing at A in Fig. 1.
Fig. 3 is the low voltage partition plate set and low-pressure internal cylinder radial positioning schematic diagram of the embodiment of the present invention.
Fig. 4 is that radial peg assembles enlarged drawing at B in Fig. 3.
Fig. 5 is the split top view of the low voltage partition plate set of the embodiment of the present invention.
Fig. 6 is support device structure diagram in the low voltage partition plate set of the embodiment of the present invention.
Fig. 7 is the low voltage partition plate set connection schematic diagram of the embodiment of the present invention.
In figure: superior hemiseptum covers 1, first order assembled stator blade 2, second level assembled stator blade 3, third level assembled stator blade
4, first order zero clearance steam seal ring 5, low-pressure internal cylinder 6, second level zero clearance steam seal ring 7, first order top packing 8, second level top
Packing 10, lower semi-diaphragm cover 11, upper holding bolt 12, top cushion block 13, lower holding bolt at the top of portion's packing 9, the third level
14, lower part cushion block 15, adjustment gasket 16, support fixing bolt 17, upper spheric washer 18, lower peripheral surface washer 19, connection bolt 20,
Radial peg 21, check bolt 22, first order assembled stator blade packing 23, second level assembled stator blade packing 24, third level assembly
Formula stator blade packing 25, cover nut 26, first order assembled stator blade caulking strip 27, second level assembled stator blade caulking strip 28, third
Grade assembled stator blade caulking strip 29.
Specific embodiment
The present invention is described in further detail with reference to the accompanying drawing and by embodiment, and following embodiment is to this hair
Bright explanation and the invention is not limited to following embodiments.
Embodiment.
Referring to Fig. 1 to Fig. 7, in the present embodiment, efficient low voltage partition plate covering device, including superior hemiseptum set 1 and lower half
Diaphragm housing ring 11, superior hemiseptum set 1 and lower semi-diaphragm set 11 are assembled with low-pressure internal cylinder 6 and are fixed；It further include that first order assembled is quiet
Leaf 2, second level assembled stator blade 3, third level assembled stator blade 4, first order top packing 8, the second level top packing 9, third
Grade top packing 10, first order assembled stator blade packing 23, second level assembled stator blade packing 24, third level assembled stator blade vapour
Envelope 25, first order assembled stator blade caulking strip 27, second level assembled stator blade caulking strip 28 and third level assembled stator blade calking
Item 29.
Superior hemiseptum set 1, which covers 11 phases with lower semi-diaphragm, to be fixed, and first order assembled stator blade 2, second level assembled stator blade 3
It is assemblied in superior hemiseptum set 1 and lower semi-diaphragm set 11 with third level assembled stator blade 4, first order assembled stator blade 2, the second level
Assembled stator blade 3 and third level assembled stator blade 4 are quiet by first order assembled stator blade caulking strip 27, second level assembled respectively
Leaf caulking strip 28 and third level assembled stator blade caulking strip 29 are fixed, first order assembled stator blade packing 23, second level assembled
It is quiet that stator blade packing 24 and third level assembled stator blade packing 25 are separately mounted to first order assembled stator blade 2, second level assembled
In leaf 3 and third level assembled stator blade 4；Packing 10 at the top of packing 8, second level top packing 9 and the third level at the top of the first order
It is assemblied in superior hemiseptum set 1 and lower semi-diaphragm set 11, and packing 8, second level top packing 9, third level top at the top of the first order
Portion's packing 10 is adjacently positioned with first order assembled stator blade 2, second level assembled stator blade 3, third level assembled stator blade 4 respectively；
It is equipped between first order zero clearance steam seal ring 5 and the second level zero between superior hemiseptum set 1 and lower semi-diaphragm set 11 and low-pressure internal cylinder 6
Gap steam seal ring 7, first order zero clearance steam seal ring 5 and second level zero clearance steam seal ring 7 are internally provided with elastomeric element, and being used for will
First order zero clearance steam seal ring 5 and second level zero clearance steam seal ring 7 press to low-pressure internal cylinder 6, it is ensured that first order zero clearance steam seal ring 5
It is contacted always with second level zero clearance steam seal ring 7 with low-pressure internal cylinder 6, prevents steam from leaking.
In the present embodiment, superior hemiseptum set 1 and lower semi-diaphragm set 11 are that Mechanical processing of casting forms, and is provided with split
Flange；Superior hemiseptum set 1 and lower semi-diaphragm set 11 pass through connection bolt 20, cover nut 26, upper spheric washer 18 and lower peripheral surface pad
It encloses 19 phases to fix, connection bolt 20 sequentially passes through spheric washer 18, lower peripheral surface washer 19 and superior hemiseptum set 1 and enters lower half
In diaphragm housing ring 11, cover nut 26 is set in the end of connection bolt 20, and cover nut 26 is in contact with upper spheric washer 18.
In the present embodiment, first order assembled stator blade 2, second level assembled stator blade 3 and third level assembled stator blade 4 by
A certain number of single blade compositions, single blade form for forging process, and single blade is separately mounted to superior hemiseptum set 1
Body and lower semi-diaphragm cover in 11 bodies.
In the present embodiment, low-pressure internal cylinder 6 is also fixed by 21 phase of radial peg with superior hemiseptum set 1 or lower semi-diaphragm set 11,
And radial peg 21 is fixed by check bolt 22；Radial peg 21 forms for forging process, and partition covering device includes two altogether
A radial peg 21, radial positioning partition covering device when for being assembled with low-pressure internal cylinder 6.
In the present embodiment, further include upper holding bolt 12, top cushion block 13, lower holding bolt 14, lower part cushion block 15,
Adjust gasket 16 and support fixing bolt 17；Check bolt 22, top cushion block 13, lower part cushion block 15, upper holding bolt 12, under
Portion's fixing bolt 14, adjustment gasket 16 and support fixing bolt 17 are that forging process forms, and the two sides of partition covering device pass through
Split flanged lap joint is positioned in 6 lower half of low-pressure internal cylinder, and by adjusting gasket 16, is padded by top cushion block 13, lower part
Partition covering device is fixed on low-pressure internal cylinder 6 by block 15, upper holding bolt 12, lower holding bolt 14 and support fixing bolt 17
Lower half.
In the present embodiment, first order zero clearance steam seal ring 5 and second level zero clearance steam seal ring 7 form for forging process, are
Contact packing；After partition covering device and low-pressure internal cylinder 6 assemble, first order zero clearance steam seal ring 5 and second level zero clearance vapour
Seal 7 is influenced by spring force and is closely labelled in the cambered surface of low-pressure internal cylinder 6, and sealing function is played.
In the present embodiment, the assembly method of low voltage partition plate covering device includes the following steps:
Step 1: superior hemiseptum set 1 and lower semi-diaphragm set 11 are finished respectively, first order assembled stator blade 2, second level dress
Devices are carried out with superior hemiseptum set 1 and lower semi-diaphragm set 11 respectively with formula stator blade 3 and third level assembled stator blade 4, and pass through the
Level-one assembled stator blade caulking strip 27, second level assembled stator blade caulking strip 28 and third level assembled stator blade caulking strip 29 are distinguished
It is fixed, then by first order assembled stator blade packing 23, second level assembled stator blade packing 24 and third level assembled
Stator blade packing 25 is separately mounted to first order assembled stator blade 2, second level assembled stator blade 3 and third level assembled stator blade 4, will
Packing 10 covers 1 and lower semi-diaphragm with superior hemiseptum respectively at the top of packing 8, second level top packing 9 and the third level at the top of the first order
Set 11 is assembled；
First order zero clearance steam seal ring 5 and second level zero clearance steam seal ring 7 are covered 1 and lower half with superior hemiseptum respectively by second step
Diaphragm housing ring 11 is assembled；
Third step, lower semi-diaphragm set 11 are transported to power plant scene and assembled with 6 lower half of low-pressure internal cylinder, first pacify radial peg 21
It is filled on lower semi-diaphragm set 11, adjustment gasket 16 and lower part cushion block 15 is placed on 6 lower half of low-pressure internal cylinder according to installation requirement
In lug slot, then lower semi-diaphragm is covered 11 and is placed on lower part cushion block 15, its left-right position is determined by radial peg 21, passes through tune
Whole gasket 16 determines its vertical position, covers 11 positions to lower semi-diaphragm and adjusts to design point, after hanging out lower semi-diaphragm set 11, leads to
It crosses lower holding bolt 14 lower part cushion block 15 and adjustment gasket 16 are fixed in the lug slot of 6 lower half of low-pressure internal cylinder, then will
Lower semi-diaphragm set 11 is by supporting fixing bolt 17 to be connected to 6 lower half of low-pressure internal cylinder；Detect the first order zero of lower semi-diaphragm set 11
The contact area (along the circumferential direction) of gap steam seal ring 5 and second level zero clearance steam seal ring 7 and 6 lower half of low-pressure internal cylinder, passes through tune
Whole spring force makes its contact area reach design requirement；
4th step, superior hemiseptum set 1 with lower semi-diaphragm set 11 by connection bolt 20, cover nut 26, upper spheric washer 18 and under
Spheric washer 19 is attached；The radial peg 21 of superior hemiseptum set 1 is installed；The top cushion block 13 of superior hemiseptum set 1 is installed, and it is low
Pressure 6 upper half of inner casing is assembled, and after determining its position, 6 upper half of low-pressure internal cylinder is hung out, top cushion block 13 is fixed by top
Bolt 12 is fixed on lower semi-diaphragm set 11；Detect first order zero clearance steam seal ring 5 and the second level zero clearance of superior hemiseptum set 1
The contact area (along the circumferential direction) of steam seal ring 7 and 6 upper half of low-pressure internal cylinder reaches its contact area by adjusting spring force
Design requirement.
It is any to be familiar with although the present invention is disclosed as above with embodiment, its protection scope being not intended to limit the invention
The technical staff of this technology changes and retouches made without departing from the spirit and scope of the invention, should belong to this hair
Bright protection scope.
Claims (8)
1. a kind of efficient low voltage partition plate covering device, including superior hemiseptum set (1) and lower semi-diaphragm set (11), the upper half every
Sleeve-board (1) and lower semi-diaphragm set (11), which are assembled with low-pressure internal cylinder (6), to be fixed；It is characterized in that, further including first order assembled
Stator blade (2), second level assembled stator blade (3), third level assembled stator blade (4), first order top packing (8), second level top
Packing (9), packing (10) at the top of the third level, first order assembled stator blade packing (23), second level assembled stator blade packing (24),
Third level assembled stator blade packing (25), first order assembled stator blade caulking strip (27), second level assembled stator blade caulking strip
(28) and third level assembled stator blade caulking strip (29)；The superior hemiseptum set (1) is mutually fixed with lower semi-diaphragm set (11), and the
Level-one assembled stator blade (2), second level assembled stator blade (3) and third level assembled stator blade (4) are assemblied in superior hemiseptum set (1)
Interior, the first order assembled stator blade (2), second level assembled stator blade (3) and third level assembled with lower semi-diaphragm set (11)
Stator blade (4) passes through first order assembled stator blade caulking strip (27), second level assembled stator blade caulking strip (28) and the third level respectively
Assembled stator blade caulking strip (29) is fixed, the first order assembled stator blade packing (23), second level assembled stator blade packing
(24) and third level assembled stator blade packing (25) is separately mounted to first order assembled stator blade (2), second level assembled stator blade
(3) and in third level assembled stator blade (4)；Packing (8), second level top packing (9) and third level top at the top of the first order
Portion's packing (10) is also fitted in superior hemiseptum set (1) and lower semi-diaphragm set (11), and packing (8), the second level at the top of the first order
Top packing (9), at the top of the third level packing (10) respectively with first order assembled stator blade (2), second level assembled stator blade (3),
Third level assembled stator blade (4) is adjacently positioned；The superior hemiseptum set (1) and lower semi-diaphragm set (11) and low-pressure internal cylinder (6) it
Between first order zero clearance steam seal ring (5) and second level zero clearance steam seal ring (7), first order zero clearance steam seal ring are installed
(5) and second level zero clearance steam seal ring (7) is internally provided with elastomeric element, for by first order zero clearance steam seal ring (5) and
Second level zero clearance steam seal ring (7) presses to low-pressure internal cylinder (6), it is ensured that first order zero clearance steam seal ring (5) and second level zero clearance
Steam seal ring (7) contacts always with low-pressure internal cylinder (6), prevents steam from leaking.
2. efficient low voltage partition plate covering device according to claim 1, which is characterized in that the superior hemiseptum set (1)
It is that Mechanical processing of casting forms, and is provided with split flange with lower semi-diaphragm set (11)；The superior hemiseptum set (1) and lower half
Diaphragm housing ring (11) is mutually fixed by connection bolt (20), cover nut (26), upper spheric washer (18) with lower peripheral surface washer (19), institute
Connection bolt (20) is stated to sequentially pass through spheric washer (18), lower peripheral surface washer (19) and superior hemiseptum set (1) and enter lower half
In diaphragm housing ring (11), the cover nut (26) is set in the end of connection bolt (20), and cover nut (26) and upper spheric washer
(18) it is in contact.
3. efficient low voltage partition plate covering device according to claim 1, which is characterized in that the first order assembled is quiet
Leaf (2), second level assembled stator blade (3) and third level assembled stator blade (4) are made of a certain number of single blades, described
Single blade forms for forging process, and single blade is separately mounted to superior hemiseptum set (1) body and lower semi-diaphragm set (11) body
It is interior.
4. efficient low voltage partition plate covering device according to claim 1, which is characterized in that the low-pressure internal cylinder (6) with
Superior hemiseptum set (1) or lower semi-diaphragm set (11) are also mutually fixed by radial peg (21), and by check bolt (22) to radial direction
Pin (21) is fixed；The radial peg (21) forms for forging process, and partition covering device includes two radial pegs (21) altogether, uses
Radial positioning partition covering device when being assembled with low-pressure internal cylinder (6).
5. efficient low voltage partition plate covering device according to claim 4, which is characterized in that further include upper holding bolt
(12), top cushion block (13), lower holding bolt (14), lower part cushion block (15), adjustment gasket (16) and support fixing bolt
(17)；The check bolt (22), top cushion block (13), lower part cushion block (15), upper holding bolt (12), lower holding bolt
(14), adjusting gasket (16) and support fixing bolt (17) is that forging process forms, and the two sides of the partition covering device pass through
Split flanged lap joint is positioned in low-pressure internal cylinder (6) lower half, and by adjusting gasket (16), by top cushion block (13),
Lower part cushion block (15), upper holding bolt (12), lower holding bolt (14) and support fixing bolt (17) are by partition covering device
It is fixed on low-pressure internal cylinder (6) lower half.
6. efficient low voltage partition plate covering device according to claim 1, which is characterized in that first order zero clearance vapour
Seal (5) and second level zero clearance steam seal ring (7) form for forging process, are contact packing；In partition covering device and low pressure
After inner casing (6) assembly, first order zero clearance steam seal ring (5) and second level zero clearance steam seal ring (7) are influenced and tight by spring force
In the closely connected cambered surface to low-pressure internal cylinder (6), sealing function is played.
7. a kind of assembly side of the efficient low voltage partition plate covering device as described in any one of claim 1-6 claim
Method, which is characterized in that the assembly method is as follows: by first order assembled stator blade (2), second level assembled stator blade (3) and
Three-level assembled stator blade (4) is respectively charged into superior hemiseptum set (1) and lower semi-diaphragm set (11), passes through first order assembled stator blade
Caulking strip (27), second level assembled stator blade caulking strip (28) and third level assembled stator blade caulking strip (29) are by assembleds at different levels
Stator blade is stoppered and is fixed；Then by first order assembled stator blade packing (23), second level assembled stator blade packing (24) and third
Grade assembled stator blade packing (25) is respectively installed to first order assembled stator blade (2), second level assembled stator blade (3) and the third level
On assembled stator blade (4), and carries out caulk and fix；By packing (8), second level top packing (9) and the third level at the top of the first order
Top packing (10) is respectively installed to superior hemiseptum set (1) and lower semi-diaphragm set (11), and carries out caulk and fix；Lower semi-diaphragm set
(11) it is attached by the lug of split flange and low-pressure internal cylinder (6) lower half, gasket (16), lower part cushion block (15) will be adjusted
And lower holding bolt (14) is mounted in the lug slot of low-pressure internal cylinder (6) lower half, then lower semi-diaphragm set (11) is placed on
On lower part cushion block (15), it is fixed in low-pressure internal cylinder (6) lower half after adjusting absolute altitude by support fixing bolt (17), then again
Top cushion block (13) and upper holding bolt (12) are fixed on lower semi-diaphragm set (11), then superior hemiseptum set (1) is passed through
Connection bolt (20), cover nut (26), upper spheric washer (18) and lower peripheral surface washer (19) are filled with lower semi-diaphragm set (11)
With fixation, assembled again with low-pressure internal cylinder (6) upper half later.
8. the assembly method of efficient low voltage partition plate covering device according to claim 7, which is characterized in that first order dress
After the assembly is completed with formula stator blade (2), second level assembled stator blade (3) and third level assembled stator blade (4), by superior hemiseptum set
(1) and lower semi-diaphragm set (11) passes through connection bolt (20), cover nut (26), upper spheric washer (18) and lower peripheral surface washer (19)
It is attached fixation, is become after an entirety again to first order assembled stator blade (2), second level assembled stator blade (3) and third
At the top of the root packing slot and the first order of grade assembled stator blade (4) at the top of packing slot, second level top packing slot and the third level
Packing slot is finished, and installs first order assembled stator blade packing (23), second level assembled stator blade packing respectively later
(24), at the top of third level assembled stator blade packing (25), first order top packing (8), second level top packing (9) and the third level
Packing (10), then overall processing is carried out to all packings.
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| CN201811369362.2A CN109441568B (en) | 2018-11-16 | High-efficiency low-pressure baffle plate sleeve device and assembly method thereof |
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| CN201811369362.2A CN109441568B (en) | 2018-11-16 | High-efficiency low-pressure baffle plate sleeve device and assembly method thereof |
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| CN109441568B CN109441568B (en) | 2024-04-19 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109779701A (en) * | 2019-03-14 | 2019-05-21 | 中国船舶重工集团公司第七0四研究所 | Axis stream air turbine experimental rig |
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|---|---|---|---|---|
| CN109779701A (en) * | 2019-03-14 | 2019-05-21 | 中国船舶重工集团公司第七0四研究所 | Axis stream air turbine experimental rig |
| CN109779701B (en) * | 2019-03-14 | 2023-12-05 | 中国船舶重工集团公司第七0四研究所 | Axial flow air turbine test device |
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