CN104696024A - Brush type blandon steam seal and preparation method thereof - Google Patents
Brush type blandon steam seal and preparation method thereof Download PDFInfo
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- CN104696024A CN104696024A CN201510105011.0A CN201510105011A CN104696024A CN 104696024 A CN104696024 A CN 104696024A CN 201510105011 A CN201510105011 A CN 201510105011A CN 104696024 A CN104696024 A CN 104696024A
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Abstract
The invention discloses a manufacturing method of a brush type blandon steam seal. The method comprises the following steps: carrying out monobloc forging on a steam seal block; processing high teeth and low teeth by adopting a thickened tooth clamping knife with a normal rake angle; processing other teeth forms according to sizes; after the tooth form processing, turning the steam seal teeth according to the size of a brush seal groove; reserving a brush seal mounting groove; dividing the steam seal into required arc sections by adopting a linear cutting process; forming a brush seal strip into a whole by adopting an automatic wire arrangement technology and an automatic welding technology; embedding the prepared brush seal strip in the brush seal mounting groove and riveting firmly; finally cutting the inner diameter of the brush seal to obtain the brush seal with a designed size by adopting the linear cutting process according to the size requirement. According to the method, the materials are greatly economized, the labor hour is greatly shortened, the mounting precision is improved, the subsequent repairing and polishing steps are not needed, the stress deformation of the brush type seal is reduced, the sealing effect and the using safety are strengthened, the processing precision is strengthened, the manual finishing links are reduced and processing and production can be automatically carried out.
Description
Technical field
The present invention relates to a kind of preparation method of Bu Laideng brush steam seal, belong to height dynamic sealing technology field.
Background technique
Brandon steam-glanding feature is: during by start and stop process, and the open configuration of spring and the closed state after crossing critical speed of rotation, effectively can avoid the impact and rub of packing and rotor, and make packing keep the good working clearance with rotor all the time in unit running process.But brandon steam-glanding still belongs to hard packing, if there is installation deviation or manufacture deviation, and the situation such as block distortion, packing still may with Rub-impact, once touch mill, can premature wear, thus reduce sealing effect and life-span.
Brush seal is flexible sealing, it is made up of compact arranged specialty metal silk, brush silk and rotor are collided when grinding can elastic yield, not easily be worn, ensure that the safe operation of unit under small―gap suture even zero clearance, even if when unit crosses critical speed of rotation and variable working condition, brush silk also can follow that rotor freely makes a concession but can not rapid wearing, after treating set steady, original sealability can be recovered again, long service life.
Bu Laideng brush steam seal combines both advantage; brush envelope adopts laser welding technology; ensure that welding is even firmly, it is little to be out of shape; brush silk structure has flexibility characteristics; can minimally working clearance for a long time between packing and rotor, simultaneously under start and stop and transcritical regime, still there is the ability of automatic regulating gap; good sealing effect, long service life.
Summary of the invention
Object: in order to overcome the deficiencies in the prior art, the invention provides a kind of Bu Laideng brush steam seal and manufacture method.
Technological scheme: for solving the problems of the technologies described above, the technical solution used in the present invention is:
A kind of Bu Laideng brush steam seal, comprise gland blocks, brush steam seal tooth, it is characterized in that: the gland sealing gear of described Bu Laideng brush steam seal comprises high tooth, low tooth and brush steam seal tooth, gland blocks segmental arc end opens has the spring eye for insert linking springs, gland blocks inlet end is provided with admission groove, wherein, brush envelope mounting groove is had at the original position of brandon steam-glanding height tooth or low tooth, mounting groove is embedded is placed with brush steam seal tooth for brush envelope, described brush steam seal tooth comprises the front screen of fastening arrangement successively, brush strip of paper used for sealing and backboard, described front screen, backboard and brush strip of paper used for sealing are fixed and welded together.
The manufacture method of described Bu Laideng brush steam seal, is characterized in that, comprise the following steps:
1) brandon steam-glanding processing: brandon steam-glanding adopts overall turnery processing, process the brush envelope mounting groove of brush strip of paper used for sealing during processing gland sealing gear simultaneously, blank is made a circle packing overall, whole circle packing adopts the segmentation of Linear cut mode, be cut to the gland blocks of some segmental arcs, and gland blocks segmental arc end is processed the spring eye of prescribed level;
2) brush strip of paper used for sealing preparation: according to gland blocks segmental arc size, prepare front screen, the backboard of corresponding segmental arc diameter, single metal wire reeled or adopts many one metal wires to combine the mode of arrangement, adopting laser bonding mode to fuse into the brush silk arranged and forward and backward baffle plate and be made into integration brush strip of paper used for sealing;
3) preparation of Bu Laideng brush envelope: be mounted to by brush strip of paper used for sealing in the mounting groove of packing segmental arc, and adopt automatic riveting mode to rivet firmly, finally adopts the equipment of Linear cut brush seal finally to be cut according to design size.
Preferably, the manufacture method of described Bu Laideng brush steam seal, is characterized in that: the gland sealing gear of described Bu Laideng brush steam seal comprises high tooth, low tooth and brush steam seal tooth, and brush steam seal tooth mounting point is on the high tooth or low tooth of brandon steam-glanding.
Preferably, the manufacture method of described Bu Laideng brush steam seal, it is characterized in that: described brush strip of paper used for sealing adopts row's silk technology and laser bonding mode to be automatically prepared into brush strip of paper used for sealing, then brush strip of paper used for sealing and gland blocks are fitted together adopt automatic riveting technology to be prepared into Bu Laideng brush steam seal.
The manufacture method of described Bu Laideng brush steam seal, is characterized in that, specifically comprise the following steps:
1) blank makes: by annular forging piece roughing after Overheating Treatment, the machining allowance in reserved inside and outside footpath, and turning goes out an end face, and ensures the flatness of end face;
2) gland sealing gear processing: by Design Requirement Drawing, produce the cutter of cooperation according to gland sealing gear shape, adopt a turning molding mode to process high tooth and low tooth;
3) admission slot machining: use milling machine to mill out each admission groove by figure, ensures that groove milling position and size are in tolerance range;
4) brush envelope mounting groove processing; Installing the position of brush strip of paper used for sealing, removing a high tooth or low tooth, adopting the disposable brush meeting design that processes of forming cutter to seal mounting groove;
5) packing segmental arc makes: use linear cutting equipment to cut steam seal ring in order by drawing, and carry out gland blocks segmentation markers;
6) spring eye: use drilling machine on gland blocks end face, mill out each spring eye to drawing requirement size by figure brill;
7) front screen, backboard preparation; According to gland blocks radian size, the stainless steel materials of selection standard thickness, adopts linear cutting equipment to cut out the front screen, the backboard that meet gland blocks segmental arc diameter and arc length;
8) silk is arranged: adopt automatic thread arranging device, by the wire of specified diameter size according to being that 45° angle is regularly arranged with rotor sense of rotation, until reach the design thickness of brush strip of paper used for sealing;
9) weld: adopt laser bonding mode front screen, brush strip of paper used for sealing and backboard welding fusion to be integrated;
10) rivet: adopting riveting technology to fit together on brush strip of paper used for sealing and gland blocks becomes brush seal;
11) cut: adopt linear cutting equipment cutting brush seal internal diameter, finishing brush seal is to reach size requirement.
Beneficial effect: the preparation method that the invention provides a kind of Bu Laideng brush steam seal, significantly save material, save a large amount of man-hour, improve installation precision, save follow-up repairing and polishing operation, decrease the stress deformation of brush seal, enhance sealing effect and safety in utilization, enhance machining accuracy, decrease manual amendment link, be convenient to adopt processing in an automated fashion.
Accompanying drawing explanation
Fig. 1 and Fig. 2 is structural representation of the present invention;
Fig. 3 be in the present invention brush strip of paper used for sealing prepare schematic diagram;
In figure: gland blocks 1, admission groove 2, spring eye 3, brush strip of paper used for sealing 4, front screen 5, backboard 6, brush envelope mounting groove 7, high tooth 8, low tooth 9, rotor 10.
Embodiment
Below in conjunction with specific embodiment, the present invention is further described.
As shown in Figure 1 to Figure 2, a kind of Bu Laideng brush steam seal, comprise gland blocks 1, brush steam seal tooth, it is characterized in that: the gland sealing gear of described Bu Laideng brush steam seal comprises high tooth 8, low tooth 9 and brush steam seal tooth, gland blocks 1 segmental arc end opens has the spring eye 3 for insert linking springs, gland blocks inlet end is provided with admission groove 2, wherein, brush envelope mounting groove 7 is had at the original position of brandon steam-glanding height tooth or low tooth, mounting groove 7 is embedded is placed with brush steam seal tooth for brush envelope, described brush steam seal tooth comprises the front screen 5 of fastening arrangement successively, brush strip of paper used for sealing 4 and backboard 6, described front screen 5, backboard 6 and brush strip of paper used for sealing 4 are fixed and welded together.
The manufacture method of described Bu Laideng brush steam seal, comprises the following steps:
1) brandon steam-glanding processing: brandon steam-glanding adopts overall turnery processing, process the brush envelope mounting groove of brush strip of paper used for sealing during processing gland sealing gear simultaneously, blank is made a circle packing overall, whole circle packing adopts the segmentation of Linear cut mode, be cut to the gland blocks of some segmental arcs, and gland blocks segmental arc end is processed the spring eye of prescribed level;
2) brush strip of paper used for sealing preparation: according to gland blocks segmental arc size, prepare front screen, the backboard of corresponding segmental arc diameter, single metal wire reeled or adopts many one metal wires to combine the mode of arrangement, adopting laser bonding mode to fuse into the brush silk arranged and forward and backward baffle plate and be made into integration brush strip of paper used for sealing;
3) preparation of Bu Laideng brush envelope: be mounted to by brush strip of paper used for sealing in the mounting groove of packing segmental arc, and adopt automatic riveting mode to rivet firmly, finally adopts the equipment of Linear cut brush seal finally to be cut according to design size.
The manufacture method of described Bu Laideng brush steam seal, is characterized in that: the gland sealing gear of described Bu Laideng brush steam seal comprises high tooth 8, low tooth 9 and brush steam seal tooth, and brush steam seal tooth mounting point is on the high tooth or low tooth of brandon steam-glanding.
The manufacture method of described Bu Laideng brush steam seal, it is characterized in that: described brush strip of paper used for sealing 4 adopts automatically row's silk technology and laser bonding mode to be prepared into brush strip of paper used for sealing, then brush strip of paper used for sealing and gland blocks are fitted together adopt automatic riveting technology to be prepared into Bu Laideng brush steam seal.
The manufacture method of described Bu Laideng brush steam seal, is characterized in that, specifically comprise the following steps:
1) blank makes: by annular forging piece roughing after Overheating Treatment, the machining allowance in reserved inside and outside footpath, and turning goes out an end face, and ensures the flatness of end face;
2) gland sealing gear processing: by Design Requirement Drawing, produce the cutter of cooperation according to gland sealing gear shape, adopt a turning molding mode to process high tooth and low tooth;
3) admission groove 2 is processed: use milling machine to mill out each admission groove by figure, ensures that groove milling position and size are in tolerance range;
4) brush envelope mounting groove processing; Installing the position of brush strip of paper used for sealing, removing a high tooth or low tooth, adopting the disposable brush meeting design that processes of forming cutter to seal mounting groove;
5) packing segmental arc makes: use linear cutting equipment to cut steam seal ring in order by drawing, and carry out gland blocks segmentation markers;
6) spring eye 3: use drilling machine on gland blocks end face, mill out each spring eye to drawing requirement size by figure brill;
7) prepared by front screen 5, backboard 6; According to gland blocks radian size, the stainless steel materials of selection standard thickness, adopts linear cutting equipment to cut out the front screen, the backboard that meet gland blocks segmental arc diameter and arc length;
8) silk is arranged: adopt automatic thread arranging device, by the wire of specified diameter size according to being that 45° angle is regularly arranged with rotor 10 sense of rotation, until reach the design thickness of brush strip of paper used for sealing; As shown in Figure 3,
9) weld: adopt laser bonding mode that front screen 5, brush strip of paper used for sealing 4 and backboard 6 are welded fusion and be integrated;
10) rivet: adopting riveting technology to fit together on brush strip of paper used for sealing and gland blocks becomes brush seal;
11) cut: adopt linear cutting equipment cutting brush seal internal diameter, finishing brush seal is to reach size requirement.
The above is only the preferred embodiment of the present invention; be noted that for those skilled in the art; under the premise without departing from the principles of the invention, can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (5)
1. Yi Zhong Bu Laideng brush steam seal, comprise gland blocks, brush steam seal tooth, it is characterized in that: the gland sealing gear of described Bu Laideng brush steam seal comprises high tooth, low tooth and brush steam seal tooth, gland blocks segmental arc end opens has the spring eye for insert linking springs, gland blocks inlet end is provided with admission groove, wherein, brush envelope mounting groove is had at the original position of brandon steam-glanding height tooth or low tooth, mounting groove is embedded is placed with brush steam seal tooth for brush envelope, described brush steam seal tooth comprises the front screen of fastening arrangement successively, brush strip of paper used for sealing and backboard, described front screen, backboard and brush strip of paper used for sealing are fixed and welded together.
2. the manufacture method of Bu Laideng brush steam seal according to claim 1, is characterized in that, comprise the following steps:
1) brandon steam-glanding processing: brandon steam-glanding adopts overall turnery processing, process the brush envelope mounting groove of brush strip of paper used for sealing during processing gland sealing gear simultaneously, blank is made a circle packing overall, whole circle packing adopts the segmentation of Linear cut mode, be cut to the gland blocks of some segmental arcs, and gland blocks segmental arc end is processed the spring eye of prescribed level;
2) brush strip of paper used for sealing preparation: according to gland blocks segmental arc size, prepare front screen, the backboard of corresponding segmental arc diameter, single metal wire reeled or adopts many one metal wires to combine the mode of arrangement, adopting laser bonding mode to fuse into the brush silk arranged and forward and backward baffle plate and be made into integration brush strip of paper used for sealing;
3) preparation of Bu Laideng brush envelope: be mounted to by brush strip of paper used for sealing in the mounting groove of packing segmental arc, and adopt automatic riveting mode to rivet firmly, finally adopts the equipment of Linear cut brush seal finally to be cut according to design size.
3. the manufacture method of Bu Laideng brush steam seal according to claim 2, is characterized in that: the gland sealing gear of described Bu Laideng brush steam seal comprises high tooth, low tooth and brush steam seal tooth, and brush steam seal tooth mounting point is on the high tooth or low tooth of brandon steam-glanding.
4. the manufacture method of Bu Laideng brush steam seal according to claim 2, it is characterized in that: described brush strip of paper used for sealing adopts row's silk technology and laser bonding mode to be automatically prepared into brush strip of paper used for sealing, then brush strip of paper used for sealing and gland blocks are fitted together adopt automatic riveting technology to be prepared into Bu Laideng brush steam seal.
5. the manufacture method of Bu Laideng brush steam seal according to claim 2, is characterized in that, specifically comprise the following steps:
1) blank makes: by annular forging piece roughing after Overheating Treatment, the machining allowance in reserved inside and outside footpath, and turning goes out an end face, and ensures the flatness of end face;
2) gland sealing gear processing: by Design Requirement Drawing, produce the cutter of cooperation according to gland sealing gear shape, adopt a turning molding mode to process high tooth and low tooth;
3) admission slot machining: use milling machine to mill out each admission groove by figure, ensures that groove milling position and size are in tolerance range;
4) brush envelope mounting groove processing; Installing the position of brush strip of paper used for sealing, removing a high tooth or low tooth, adopting the disposable brush meeting design that processes of forming cutter to seal mounting groove;
5) packing segmental arc makes: use linear cutting equipment to cut steam seal ring in order by drawing, and carry out gland blocks segmentation markers;
6) spring eye: use drilling machine on gland blocks end face, mill out each spring eye to drawing requirement size by figure brill;
7) front screen, backboard preparation; According to gland blocks radian size, the stainless steel materials of selection standard thickness, adopts linear cutting equipment to cut out the front screen, the backboard that meet gland blocks segmental arc diameter and arc length;
8) silk is arranged: adopt automatic thread arranging device, by the wire of specified diameter size according to being that 45° angle is regularly arranged with rotor sense of rotation, until reach the design thickness of brush strip of paper used for sealing;
9) weld: adopt laser bonding mode front screen, brush strip of paper used for sealing and backboard welding fusion to be integrated;
10) rivet: adopting riveting technology to fit together on brush strip of paper used for sealing and gland blocks becomes brush seal;
11) cut: adopt linear cutting equipment cutting brush seal internal diameter, finishing brush seal is to reach size requirement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510105011.0A CN104696024A (en) | 2015-03-11 | 2015-03-11 | Brush type blandon steam seal and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510105011.0A CN104696024A (en) | 2015-03-11 | 2015-03-11 | Brush type blandon steam seal and preparation method thereof |
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| CN104696024A true CN104696024A (en) | 2015-06-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510105011.0A Pending CN104696024A (en) | 2015-03-11 | 2015-03-11 | Brush type blandon steam seal and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110508853A (en) * | 2019-09-06 | 2019-11-29 | 哈尔滨汽轮机厂有限责任公司 | The processing method of helical teeth in a kind of helical teeth steam seal ring |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201851172U (en) * | 2010-11-01 | 2011-06-01 | 宋鹏 | Brandon steam seal and turbine |
| CN103603696A (en) * | 2013-09-09 | 2014-02-26 | 张建华 | Novel Brandon brush steam seal |
| CN203685305U (en) * | 2014-01-08 | 2014-07-02 | 张建华 | Novel Brandon brush type steam seal |
| CN204591370U (en) * | 2015-03-11 | 2015-08-26 | 江苏透平密封高科技股份有限公司 | A kind of Bu Laideng brush steam seal |
-
2015
- 2015-03-11 CN CN201510105011.0A patent/CN104696024A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201851172U (en) * | 2010-11-01 | 2011-06-01 | 宋鹏 | Brandon steam seal and turbine |
| CN103603696A (en) * | 2013-09-09 | 2014-02-26 | 张建华 | Novel Brandon brush steam seal |
| CN203685305U (en) * | 2014-01-08 | 2014-07-02 | 张建华 | Novel Brandon brush type steam seal |
| CN204591370U (en) * | 2015-03-11 | 2015-08-26 | 江苏透平密封高科技股份有限公司 | A kind of Bu Laideng brush steam seal |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110508853A (en) * | 2019-09-06 | 2019-11-29 | 哈尔滨汽轮机厂有限责任公司 | The processing method of helical teeth in a kind of helical teeth steam seal ring |
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Effective date of abandoning: 20170111 |