CN204591368U - A kind of brush seal packing - Google Patents
A kind of brush seal packing Download PDFInfo
- Publication number
- CN204591368U CN204591368U CN201520320253.7U CN201520320253U CN204591368U CN 204591368 U CN204591368 U CN 204591368U CN 201520320253 U CN201520320253 U CN 201520320253U CN 204591368 U CN204591368 U CN 204591368U
- Authority
- CN
- China
- Prior art keywords
- brush seal
- seal packing
- riveted joint
- bristle
- bristle row
- 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.)
- Expired - Fee Related
Links
- 238000012856 packing Methods 0.000 title claims abstract description 41
- 238000007789 sealing Methods 0.000 claims abstract description 17
- 238000011144 upstream manufacturing Methods 0.000 claims description 7
- 229910017052 cobalt Inorganic materials 0.000 claims description 4
- 239000010941 cobalt Substances 0.000 claims description 4
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 4
- 229910000601 superalloy Inorganic materials 0.000 claims description 4
- 238000010977 unit operation Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 210000004907 gland Anatomy 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Turbine Rotor Nozzle Sealing (AREA)
- Sealing Devices (AREA)
Abstract
A kind of brush seal packing, belongs to steam turbine seal device technical field.The utility model does not well solve the problem of steam turbine gas leakage in order to solve existing turbine steam seal.The utility model comprises labyrinth casing, packing segmental arc and high tooth, the loop configuration that a kind of brush seal packing is made up of the labyrinth casing of multiple arc, the upper and lower end face of labyrinth casing is respectively equipped with segmental arc and high tooth, the lower end surface of labyrinth casing is pressed close to high flank and is also provided with place's U-shaped riveted joint groove, sealing brush device adopts the mode of riveted joint to be fixed in U-shaped riveted joint groove, and the sidewall of sealing brush device be arranged in U-shaped riveted joint groove contacts with the tooth wall of high tooth.The utility model reduces the leakage of unit steam, increases unit working efficiency, guarantees that unit operation is safe and reliable.
Description
Technical field
The utility model relates to a kind of brush seal packing, belongs to steam turbine seal device technical field.
Background technique
Steam turbine is the rotary power machinery transformation of energy of steam being become mechanical work, in order to reduce the gas leakage in the gap everywhere of steam turbine, ensure that steam turbine normal safe runs again, therefore in steam turbine, various packing is provided with, whole labyrinth ring is made up of multistage packing segmental arc body, the common packing of tradition mainly contains the sealing firmly such as comb labyrinth gland and honeycomb steam seal, in order to adapt to distortion and the eccentric motion of turbine rotor, prevent contact rotor from causing rotor to wear and tear, enough large gap must be left between labyrinth ring and rotor, thus this type of sealing effect is poor, when there is vibration in rotor, epitrochanterian boss may interfere with stage teeth, therefore the rotor of steam turbine has been damaged.
Model utility content
The purpose of this utility model is the problem well not solving steam turbine gas leakage in order to solve existing turbine steam seal, and then provides a kind of brush seal packing.
The technical solution of the utility model: a kind of brush seal packing comprises labyrinth casing, packing segmental arc and high tooth, the loop configuration that described a kind of brush seal packing is made up of the labyrinth casing of multiple arc, the upper and lower end face of labyrinth casing is respectively equipped with packing segmental arc and high tooth, the lower end surface of labyrinth casing is pressed close to high flank and is also provided with place's U-shaped riveted joint groove, sealing brush device adopts the mode of riveted joint to be fixed in U-shaped riveted joint groove, and the sidewall of sealing brush device be arranged in U-shaped riveted joint groove contacts with the tooth wall of high tooth.
Preferred: the notch place of described U-shaped riveted joint groove is provided with clamping plate, and clamping plate and labyrinth casing form integrative-structure.
Preferred: described sealing brush device comprises lantern, lower lantern and bristle row, described upper lantern and lower lantern form " η " shape fitting seat, and bristle row clamping is in the opening of " η " shape fitting seat.
Preferred: the height difference of described bristle row and upper lantern is called upstream ring protection height h; the height difference of bristle row and lower lantern is called downstream ring protection height H; the thickness of bristle row is 2-4mm; the scope of upstream ring protection height h is 4-6mm, and the scope of downstream ring protection height H is 0.5-1.5mm.
Preferred: during described a kind of brush seal packing work, bristle row along axial flow direction and rotor contact, now the length direction of bristle row and rotor be formed radially bristle angle α, described bristle angle α is 30 °-60 °.
Preferred: described bristle row be cobalt base superalloy bristle row.
The utility model has following beneficial effect: a kind of brush seal packing of the present utility model is provided with U-shaped riveted joint groove on labyrinth casing, sealing brush device is provided with in groove, can gap between effective sealing turbine steam seal and rotor, increase steam turbine energy conversion rate.Bristle row of the present utility model has low fragility, high tenacity, ensures not fracture in running, and bristle row adopts the mode of inlaying to be arranged in labyrinth casing, solves the problem that unit air leakage is large.The utility model reduces the leakage of unit steam, increases unit working efficiency, guarantees that unit operation is safe and reliable.
Accompanying drawing explanation
Fig. 1 is a kind of scheme of installation of brush seal packing;
Fig. 2 is a kind of sealed structural representation of brush seal packing;
Fig. 3 be brush silk with rotor surface coordinate schematic diagram;
1-labyrinth casing in figure, 2-packing segmental arc, 3-height tooth, 4-U shape riveted joint groove, 5-seals brush device, the upper lantern of 6-, lantern under 7-, 8-bristle row, 9-rotor, 10-clamping plate, h-upstream ring protection height, H-downstream ring protection height, α-bristle angle.
Embodiment
Embodiment one: composition graphs 1 to Fig. 3 illustrates present embodiment, a kind of brush seal packing of present embodiment comprises labyrinth casing 1, packing segmental arc 2 and high tooth 3, the loop configuration that described a kind of brush seal packing is made up of the labyrinth casing 1 of multiple arc, the upper and lower end face of labyrinth casing 1 is respectively equipped with packing segmental arc 2 and high tooth 3, the lower end surface of labyrinth casing 1 is pressed close to high flank and is also provided with place's U-shaped riveted joint groove 4, sealing brush device 5 adopts the mode of riveted joint to be fixed in U-shaped riveted joint groove 4, the sidewall of sealing brush device 5 be arranged in U-shaped riveted joint groove 4 contacts with the tooth wall of high tooth, the notch place of described U-shaped riveted joint groove is provided with clamping plate 10, and clamping plate 10 and packing form integrative-structure.Setting like this, brush seal packing, when sealing brush device 5 and coming in contact with rotor, bristle row 8 on sealing brush device 5 produces flexible yielding, the length direction of bristle row 8 and the angle being formed radially bristle angle α of rotor 9 increase, and now bristle row 8 and rotor 9 produce interference fit, the high tooth 3 on packing and the seal action of bristle row 8 reduce the leakage of unit steam, increase unit working efficiency.
Embodiment two: composition graphs 2 illustrates present embodiment, the sealing brush device 5 described in a kind of brush seal packing of present embodiment comprises lantern 6, lower lantern 7 and bristle row 8, described upper lantern 6 forms " η " shape fitting seat with lower lantern 7, and bristle row 8 clamping is in the opening of " η " shape fitting seat; Described bristle row 8 and the height difference of upper lantern 6 are called upstream ring protection height h; bristle row 8 is called downstream ring protection height H with the height difference of lower lantern 7; the thickness of bristle row 8 is 2-4mm; the scope of upstream ring protection height h is 4-6mm, and the scope of downstream ring protection height H is 0.5-1.5mm.Setting like this, brush seal adds the density of the brush silk in bristle row 8, and the air between brush silk reduces, and effective steam leakage area is reduced, and the resistance simultaneously making steam leakage flow increases.
Embodiment three: composition graphs 3 illustrates present embodiment, when a kind of brush seal packing described in a kind of brush seal packing of present embodiment works, bristle row 8 contacts with rotor 9 along axial flow direction, now the length direction of bristle row 8 and rotor 9 be formed radially bristle angle α, described bristle angle α is 30 °-60 °.Setting like this, the sense of rotation of the bristle relative rotor of brush seal is regularly arranged by certain angle of inclination, reduces the wearing and tearing of bristle, makes bristle more easily adapt to foozle and the thermal distortion of rotor.
Embodiment four: composition graphs 1 to Fig. 3 illustrates present embodiment, the bristle row 8 described in a kind of brush seal packing of present embodiment be cobalt base superalloy bristle row.Setting like this, cobalt base superalloy bristle row has in low fragility, high tenacity, guarantee running and does not fracture, bristle adopts high performance welding procedure to combine and forms bristle row 8 simultaneously, and the bristle in bristle row 8 does not now come off, and adds the sealability of brush seal packing.
The exemplary illustration of present embodiment just to this patent, does not limit its protection domain, and those skilled in the art can also change, as long as no the Spirit Essence exceeding this patent, in the protection domain of this patent its local.
Claims (6)
1. a brush seal packing, comprise labyrinth casing (1), packing segmental arc (2) and high tooth (3), it is characterized in that: the loop configuration that described a kind of brush seal packing is made up of the labyrinth casing (1) of multiple arc, the upper and lower end face of labyrinth casing (1) is respectively equipped with packing segmental arc (2) and high tooth (3), the lower end surface of labyrinth casing (1) is pressed close to high flank and is also provided with place's U-shaped riveted joint groove (4), sealing brush device (5) adopts the mode of riveted joint to be fixed in U-shaped riveted joint groove (4), the sidewall of sealing brush device (5) be arranged in U-shaped riveted joint groove (4) contacts with the tooth wall of high tooth.
2. a kind of brush seal packing according to claim 1, is characterized in that: the notch place of described U-shaped riveted joint groove is provided with clamping plate (10), and clamping plate (10) and labyrinth casing (1) form integrative-structure.
3. a kind of brush seal packing according to claim 1, it is characterized in that: described sealing brush device (5) comprises lantern (6), lower lantern (7) and bristle row (8), described upper lantern (6) and lower lantern (7) form " η " shape fitting seat, and bristle row (8) clamping is in the opening of " η " shape fitting seat.
4. a kind of brush seal packing according to claim 3; it is characterized in that: described bristle row (8) is called upstream ring protection height (h) with the height difference of upper lantern (6); bristle row (8) is called downstream ring protection height (H) with the height difference of lower lantern (7); the thickness of bristle row (8) is 2-4mm; the scope of upstream ring protection height (h) is 4-6mm, and the scope of downstream ring protection height (H) is 0.5-1.5mm.
5. a kind of brush seal packing according to claim 4, it is characterized in that: when described a kind of brush seal packing works, bristle row (8) contacts with rotor (9) along axial flow direction, now the length direction of bristle row (8) and rotor (9) be formed radially bristle angle (α), described bristle angle (α) is 30 °-60 °.
6. a kind of brush seal packing according to claim 4, is characterized in that: described bristle row (8) for cobalt base superalloy bristle row.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520320253.7U CN204591368U (en) | 2015-05-18 | 2015-05-18 | A kind of brush seal packing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520320253.7U CN204591368U (en) | 2015-05-18 | 2015-05-18 | A kind of brush seal packing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204591368U true CN204591368U (en) | 2015-08-26 |
Family
ID=53927532
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520320253.7U Expired - Fee Related CN204591368U (en) | 2015-05-18 | 2015-05-18 | A kind of brush seal packing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204591368U (en) |
-
2015
- 2015-05-18 CN CN201520320253.7U patent/CN204591368U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150826 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |