CN105569744B - Brush type seal and production method thereof - Google Patents
Brush type seal and production method thereof Download PDFInfo
- Publication number
- CN105569744B CN105569744B CN201610092505.4A CN201610092505A CN105569744B CN 105569744 B CN105569744 B CN 105569744B CN 201610092505 A CN201610092505 A CN 201610092505A CN 105569744 B CN105569744 B CN 105569744B
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- China
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- brush
- seal
- envelope
- wrapping wire
- filament
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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
- F01D11/00—Preventing or minimising internal leakage of working-fluid, e.g. between stages
-
- 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
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Sealing Devices (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
The invention discloses a brush type seal which comprises a steam seal block and a brush seal, wherein a brush seal groove is formed in the steam seal block; the brush seal is fixed in the brush seal groove and comprises two wire brush protecting plates and brush wires arranged between the two wire brush protecting plates; the two wire brush protecting plates are identical in height and are separately lower than the brush wires; a separation blade for preventing the brush wires from being inclined is arranged below the air outlet side of the brush seal groove; and the separation board and the steam seal block form an integrated structure. According to the brush type seal disclosed by the invention, in production of the brush type seal, a direct type brush seal is first produced, and then is subjected to rolling-bending forming, so that the defects that an existing process is troublesome in production, poor in generality and the like are overcome; the brush type seal can be produced on batch, and is effective in inventory and good in generality; the influence of clockwise and counter-clockwise rotation of a rotor on the arraying direction of the brush seal is eliminated, the rejection rate is reduced and an original wire arraying template is discarded; and by adopting an automatic wire winding process, labor intensity is reduced, the uniformity and the precision of arrayed wires are improved, and the production efficiency is greatly improved.
Description
Technical field
The present invention relates to a kind of brush seal and its manufacture method, belong to water-tight equipment technical field.
Background technology
Brush seal is a kind of Efficient Damping sealing that developed recently gets up, and its leakage rate is the 1/5- of Comb Labyrinth Seals
1/10, and allow the serious decentraction of transient state between sound to keep sealability constant, not only improve unit efficiency but also improved
The stability of rotor, has been applied to the turbomachines such as aero-engine, industry gas turbine and steam turbine.The master of brush seal
Want structure to be on the basis of original packing, install a circle brush strip of paper used for sealing additional, replace original high tooth with brush strip of paper used for sealing, aspect ratio is original
High tooth is high, and because reducing labyrinth clearance, thus reducing gas leakage, the brush filament of its hermetic unit is along rotor direction of rotation arrangement
The one resistant to elevated temperatures B alloy wire of circle, can be indeformable with resistance to less than 1000 degrees Celsius of high temperature, during operation, the brush wire bundle scattered similar to
The wind effects of shelter-forest, play sealing effectiveness, and the transient state being adapted to rotor is beated, and recover original labyrinth clearance, can grow
Phase ensures using effect, and brush filament is flexible, also will not cause big impact to the vibration of unit, energy-saving effect is more apparent,
Therefore range of application is wider.
Manufacture due to traditional brush seal will process the front shield of corresponding segmental arc in advance according to the different radian of packing
Plate, rear backplate, brush wire bundle, carry out being adapted to after clamping welding finishes further according to being actually needed again, thus there is Railway Project：
（One）Cannot be carried out producing in batches, simultaneously also cannot effective storage capacity；（Two）Manufacture process needs using row's silk template, and needs
Tow is inserted template by manual type, and row's silk uniformity and precision are all relatively low, and production efficiency is not also high；（Three）Row's silk angle is not
Can change, generally 45 °, if to change row silk angle; the row of re-replacing silk template, arrange silk template specification various；（Four）
Brush envelope orientation is subject to that rotor is suitable, rotate counterclockwise is affected, percent defective height.
Content of the invention
The technical problem to be solved is the defect overcoming prior art, provides a kind of brush seal and its manufacture
Method, solves the adaptation unicity in the manufacture process of traditional brush seal, realizes batch and prepares material, produces in batches and have
Effect stock, improves production efficiency simultaneously, reduces percent defective.
For solving above-mentioned technical problem, the present invention adopts technical scheme as follows：
A kind of brush seal it is characterised in that：Including gland blocks and brush envelope, described gland blocks are provided with many for sealing
Individual high tooth and low tooth, described gland blocks are further opened with brush sealing groove, described brush sealing be scheduled in brush sealing groove it is characterised in that：
Described brush package includes two pieces of brush filament backplates and the brush filament being arranged between two pieces of brush filament backplates, described two pieces of brush filament shield
Plate hight degree is identical and can be placed in brush sealing groove, and described brush sealing groove is provided with the catch preventing brush filament from tilting, institute in the lower section of side of giving vent to anger
The free end stating brush filament protrudes from catch.
A kind of aforesaid brush seal it is characterised in that：Described catch and gland blocks are structure as a whole.
A kind of aforesaid brush seal it is characterised in that：Described brush sealing groove is opened in the close high tooth of gland blocks or low tooth
Position, and be located at the air inlet side of accordingly high tooth or low tooth.
A kind of aforesaid brush seal it is characterised in that：The free end of described brush filament protrudes from brush filament backplate 10 ~ 20mm.
A kind of manufacture method of brush seal it is characterised in that：Comprise the following steps,
Step one, grooving operations：In gland blocks, the air inlet side of high tooth or low tooth opens up brush sealing groove；
Step 2, prepared by material：Process the brush filament backplate matching and wrapping wire spool, and wrapping wire spool is installed on wrapping wire
On ring；
Step 3, wrapping wire operates：Place asbestos board and carry out wrapping wire operation between the brush filament backplate preparing；
Step 4, brush packaging clip：Ready brush binder is had and loads after brush filament backplate, buckle into the brush envelope that wrapping wire finishes
On, after all brush filament backplate alignment, locking brush binder tool, takes off from automatic winding machine；
Step 5, welding operation：Clamping brush envelope is welded；
Step 6, rough cutting：Using linear cutting equipment, the brush envelope being welded is cut in the middle of brush filament, pulls down asbestos board,
Obtain vertical bar brush envelope；
Step 7, strong arc：The vertical bar brush being obtained by above step envelope is placed on rolling arc machine, according to different diameters
Demand, by satisfactory for orthopedic for vertical bar brush envelope one-tenth brush envelope segmental arc；
Step 8, according to installation site, is finished after the brush having manufactured envelope segmental arc is first riveted in brush sealing groove, or
It is riveted on after first being finished in brush sealing groove.
A kind of manufacture method of aforesaid brush seal it is characterised in that：Wrapping wire in described step 3 operates as automatic
Wrapping wire, brush filament backplate is fixed on the positioner of straight trip displacement frame of machining tool, and puts between two pieces of brush filament backplates
Put asbestos board, then debug positioner it is ensured that brush filament backplate smoothly can slide on straight trip displacement frame, wrapping wire of having good positioning
Initial position, according to design requirement, sets the translational speed of the number of turns, angle and straight trip displacement frame of wrapping wire, opens motor and enter
Row automatic winding, wrapping wire is automatically stopped after terminating.
A kind of manufacture method of aforesaid brush seal it is characterised in that：Welding operation in described step 5 is automatic
Welding, clamping brush envelope is placed on automatic welding machine, carries out automatic welding after setting parameter, welding is polished after finishing
Welding slag.
A kind of manufacture method of aforesaid brush seal it is characterised in that：Finishing passes in described step 8 are, root
Require according to design size, final cutting is carried out to brush envelope using linear cutting equipment, be fabricated to satisfactory finished product brush envelope.
The present invention has following beneficial effect：Traditional brush seal structure is improved by the present invention, will backplate in front and back
It is designed as that length is identical, brush sealing groove is opened in the high tooth of gland blocks or the air inlet side of low tooth, and retains a part of high tooth or low
Tooth substitutes original rear backplate, plays the effect that suppression brush filament tilts, and the manufacture method based on this brush seal is brush with tradition
The manufacture method of sealing is compared, and has following advantage：
（1）Using first making vertical bar brush envelope, then rolling-bending forming again, it is to avoid existing process makes loaded down with trivial details, poor universality
The shortcomings of, can produce in batches, effective storage capacity, and realize the standardization of products, versatility is good；
（2）Abandon the various row's silk template of specification in original technique it is achieved that automated production, save a large amount of works
When, improve production efficiency and product quality；
（3）Using automatic winding technique, reduce labor strength, improve the uniformity and the precision of row's silk；
（4）Wrapping wire angle can be changed, it is possible to achieve any wrapping wire angle in the range of 45 ° ± 25 °, meet different designs
Demand；
（5）Relieve brush envelope orientation by rotor is suitable, rotate counterclockwise is affected, reduce percent defective, Er Qieyi
Secondary produce 4 satisfactory brush strip of paper used for sealings, great improve production efficiency.
Brief description
Fig. 1 is the structural representation of the brush seal of the present invention.
Fig. 2 is the structural representation of the gland blocks of the brush seal of the present invention.
Fig. 3 is the structural representation of the brush envelope of the brush seal of the present invention.
Fig. 4 be the present invention brush seal manufacture method in wrapping wire operation principle schematic.
Fig. 5 be the present invention brush seal manufacture method in wrapping wire operation after the completion of brush envelope schematic diagram.
Fig. 6 be the present invention brush seal manufacture method in complete wrapping wire operation brush be encapsulated into brush binder tool after effect
Figure.
Fig. 7 be the present invention brush seal manufacture method in semi-finished product schematic diagram after the completion of welding operation.
Fig. 8 be the present invention brush seal manufacture method in brush envelope top view before rough cutting.
Fig. 9 be the present invention brush seal manufacture method in carry out the vertical bar brush envelope obtaining after rough cutting.
Figure 10 is that the brush obtaining in the brush seal manufacture method of the present invention, vertical bar brush envelope being carried out after strong arc seals segmental arc.
Specific embodiment
The invention will be further described below in conjunction with the accompanying drawings.Following examples are only used for clearly illustrating the present invention
Technical scheme, and can not be limited the scope of the invention with this.
A kind of brush seal, as shown in figure 1, including gland blocks 1 and brush envelope 2, gland blocks 1 are provided with for sealing structure
Multiple high teeth and low tooth, gland blocks 1 are further opened with brush sealing groove 3, and brush sealing groove 3 is opened in the close high teeth portion position of gland blocks 1, and
It is located at the air inlet side of accordingly high tooth；Brush envelope 2 is fixed in brush sealing groove 3, and brush envelope 2 structures are as shown in figure 3, include two pieces of brush filament backplates
5 and the brush filament 6 that is arranged between two pieces of brush filament backplates 5；Two pieces of brush filament backplates 5 are highly identical and can be placed in brush sealing groove 3, brush envelope
Groove 3 is provided with, in the lower section of side of giving vent to anger, the catch preventing brush filament 6 from tilting, and the free end of brush filament 6 protrudes from catch, catch and gland blocks
1 is structure as a whole（As shown in Figure 2）, open up brush sealing groove 3 in the high tooth of gland blocks 1 or the air inlet side of low tooth, and retain one
Partly the backboard of the brush envelope of high tooth or low tooth replacement traditional structure, plays the effect that suppression brush filament tilts.
A kind of manufacture method of brush seal, comprises the following steps：
Step one, grooving operations：Gland blocks 1 open up brush sealing groove 3 near the position of high tooth or low tooth；
Step 2, prepared by material：Process the brush filament backplate 5 matching and wrapping wire spool 10, and wrapping wire spool is installed on
On wrapping wire ring 9；
Step 3, wrapping wire operates：As shown in figure 4, the brush filament preparing backplate 5 is fixed to the straight trip displacement of machining tool
On the positioner 7 of frame, and place asbestos board 8 between two pieces of brush filament backplates, then debugging positioner 7 is it is ensured that brush filament is protected
Plate 5 smoothly can slide on straight trip displacement frame, and the initial position of wrapping wire of having good positioning, according to design requirement, sets wrapping wire
The translational speed of the number of turns, angle and straight trip displacement frame, opens motor and carries out automatic winding, wrapping wire is automatically stopped after terminating, wrapping wire
Brush envelope after end is as shown in Figure 5；
Step 4, brush packaging clip：As shown in fig. 6, by ready brush binder tool 11 load brush filament backplates 5 after, buckle into around
The brush that silk finishes is sealed up, after all brush filament backplate 5 alignment, locking brush binder tool 11, takes off from automatic winding machine；
Step 5, welding operation：Clamping brush envelope is placed on automatic welding machine, carries out after setting parameter automatically
Welding, welds welding slag of polishing after finishing, and the brush after the completion of welding seals as Figure 7-8；
Step 6, rough cutting：Using linear cutting equipment, the brush envelope being welded is cut in the middle of brush filament, pulls down asbestos board
8, obtain the vertical bar brush envelope 12 shown in Fig. 9；
Step 7, strong arc：The vertical bar brush being obtained by above step envelope is placed on rolling arc machine, according to different diameters
Demand, vertical bar brush is sealed the satisfactory brush envelope segmental arc 13 shown in orthopedic one-tenth Figure 10；
Step 8, according to installation site, is finished after the brush having manufactured envelope segmental arc is first riveted in brush sealing groove, or
It is riveted on after first being finished in brush sealing groove, finishing passes are to be required according to design size, using linear cutting equipment
Final cutting is carried out to brush envelope, is fabricated to satisfactory finished product brush envelope.
Traditional brush seal structure is improved by the present invention, front and rear baffle is designed as length unanimously, by brush sealing groove
It is opened in the high tooth of gland blocks or the air inlet side of low tooth, and retains a part of high tooth or the low tooth original backboard of replacement, play suppression
The effect that brush filament processed tilts；Meanwhile, present invention improves over the manufacture method of brush seal, first make vertical bar brush envelope, then roll again
Roll forming, it is to avoid the shortcomings of existing process makes loaded down with trivial details, poor universality, can produce in batches, effective storage capacity, and realize product
Standardization, versatility is good.
The above is only the preferred embodiment of the present invention it is noted that ordinary skill people for the art
For member, on the premise of without departing from the technology of the present invention principle, some improvement can also be made and deform, these improve and deform
Also should be regarded as protection scope of the present invention.
Claims (4)
1. a kind of manufacture method of brush seal it is characterised in that：Comprise the following steps,
Step one, grooving operations：In gland blocks, the air inlet side of high tooth or low tooth opens up brush sealing groove；
Step 2, prepared by material：Process the brush filament backplate matching and wrapping wire spool, and wrapping wire spool is installed on wrapping wire ring
On；
Step 3, wrapping wire operates：Place asbestos board and carry out wrapping wire operation between the brush filament backplate preparing；
Step 4, brush packaging clip：Ready brush binder is had and loads after brush filament backplate, buckle into the brush that wrapping wire finishes and seal up, institute
After having the alignment of brush filament backplate, locking brush binder tool, takes off from automatic winding machine；
Step 5, welding operation：Clamping brush envelope is welded；
Step 6, rough cutting：Using linear cutting equipment, the brush envelope being welded is cut in the middle of brush filament, pulls down asbestos board, obtain
Vertical bar brush seals；
Step 7, strong arc：The vertical bar brush being obtained by above step envelope is placed on rolling arc machine, according to different diameter need
Ask, by satisfactory for orthopedic for vertical bar brush envelope one-tenth brush envelope segmental arc；
Step 8, according to installation site, is finished after the brush having manufactured envelope segmental arc is first riveted in brush sealing groove, or advanced
It is riveted in brush sealing groove after row finishing.
2. a kind of brush seal according to claim 1 manufacture method it is characterised in that：Wrapping wire in described step 3
Operate as automatic winding, brush filament backplate is fixed on the positioner of straight trip displacement frame of machining tool, and in two pieces of brush filament
Asbestos board is placed, then debugging positioner is it is ensured that brush filament backplate smoothly can slide on straight trip displacement frame, fixed between backplate
The initial position of the good wrapping wire in position, according to design requirement, sets the translational speed of the number of turns, angle and straight trip displacement frame of wrapping wire,
Open motor and carry out automatic winding, wrapping wire is automatically stopped after terminating.
3. a kind of brush seal according to claim 1 manufacture method it is characterised in that：Welding in described step 5
Operate as automatic welding, clamping brush envelope is placed on automatic welding machine, carries out automatic welding after setting parameter, welding
Polishing welding slag after finishing.
4. a kind of brush seal according to claim 1 manufacture method it is characterised in that：Finishing in described step 8
Work process is to be required according to design size, carries out final cutting using linear cutting equipment to brush envelope, is fabricated to satisfactory
Finished product brush seals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610092505.4A CN105569744B (en) | 2016-02-19 | 2016-02-19 | Brush type seal and production method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610092505.4A CN105569744B (en) | 2016-02-19 | 2016-02-19 | Brush type seal and production method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105569744A CN105569744A (en) | 2016-05-11 |
| CN105569744B true CN105569744B (en) | 2017-02-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610092505.4A Active CN105569744B (en) | 2016-02-19 | 2016-02-19 | Brush type seal and production method thereof |
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| Country | Link |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112658337B (en) * | 2020-12-15 | 2023-02-14 | 吉林大学 | Lathe three-jaw chuck jaw repairing device and using method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101713301A (en) * | 2009-09-28 | 2010-05-26 | 南京信润科技有限公司 | Method for producing brush steam seal ring |
| CN102296994A (en) * | 2011-08-03 | 2011-12-28 | 上海电气电站设备有限公司 | Manufacturing technique for brush type steam seal for steam turbines |
| CN103075205A (en) * | 2012-12-28 | 2013-05-01 | 东方电气集团东方汽轮机有限公司 | Novel steam seal of steam turbine and processing method thereof |
| CN204060808U (en) * | 2014-06-26 | 2014-12-31 | 南京博沃科技发展有限公司 | A kind of brush steam seal improving brush silk means of fixation |
| CN104564175A (en) * | 2014-12-26 | 2015-04-29 | 江苏鑫信润科技有限公司 | Multistage disengagement-preventing brush type steam seal ring |
| CN205400819U (en) * | 2016-02-19 | 2016-07-27 | 江苏拓平密封科技有限公司 | Novel brush seal |
-
2016
- 2016-02-19 CN CN201610092505.4A patent/CN105569744B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101713301A (en) * | 2009-09-28 | 2010-05-26 | 南京信润科技有限公司 | Method for producing brush steam seal ring |
| CN102296994A (en) * | 2011-08-03 | 2011-12-28 | 上海电气电站设备有限公司 | Manufacturing technique for brush type steam seal for steam turbines |
| CN103075205A (en) * | 2012-12-28 | 2013-05-01 | 东方电气集团东方汽轮机有限公司 | Novel steam seal of steam turbine and processing method thereof |
| CN204060808U (en) * | 2014-06-26 | 2014-12-31 | 南京博沃科技发展有限公司 | A kind of brush steam seal improving brush silk means of fixation |
| CN104564175A (en) * | 2014-12-26 | 2015-04-29 | 江苏鑫信润科技有限公司 | Multistage disengagement-preventing brush type steam seal ring |
| CN205400819U (en) * | 2016-02-19 | 2016-07-27 | 江苏拓平密封科技有限公司 | Novel brush seal |
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| Publication number | Publication date |
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| CN105569744A (en) | 2016-05-11 |
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Effective date of registration: 20200512 Address after: No.12, yanmahe Road, science and technology entrepreneurship Park, economic development zone, Hongze District, Huai'an City, Jiangsu Province Patentee after: JIANGSU XINXINRUN TECHNOLOGY Co.,Ltd. Address before: 210046, Jiangsu Province, Qixia District, Nanjing Yao street, Gan family side, No. 06 East, building 108, 1 Patentee before: JIANGSU TUOPING SEALING TECHNOLOGY Co.,Ltd. |
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