CN103867724A - Multipoint compression high-temperature-resistant dynamic sealing device - Google Patents
Multipoint compression high-temperature-resistant dynamic sealing device Download PDFInfo
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- CN103867724A CN103867724A CN201410127156.6A CN201410127156A CN103867724A CN 103867724 A CN103867724 A CN 103867724A CN 201410127156 A CN201410127156 A CN 201410127156A CN 103867724 A CN103867724 A CN 103867724A
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Abstract
The invention relates to the technical field of dynamic sealing devices and discloses a multipoint compression high-temperature-resistant dynamic sealing device. According to the device, a sealing compression ring presses a graphite packing set in the axial direction to enable the graphite packing set to be in close contact with the sealing surface of a fixed body and flexibly fixed to the fixed body through an axial fastening bolt; a spring pressing piece is of a wavy structure, one end of the spring pressing piece is fixed to a radial bolt hole of the sealing compression ring through a radial fastening bolt, the other end of the spring pressing piece is suspended in the air and is in contact with and fixed to the graphite packing set flexibly through a wave trough, and the spring pressing piece presses the graphite packing set tightly and evenly in the radial direction to enable the inner surface of the graphite packing set to be in close contact with the sealing surface of rotary equipment. According to the device, axial static sealing and radial flexible dynamic sealing are achieved for the rotary equipment, and due to the fact that the graphite packing set adopted is good in high temperature resistance, the service life of the sealing device can be prolonged. The device is suitable for large high-temperature rotary equipment and has good market prospects.
Description
Technical field
The present invention relates to dynamic seal apparatus technical field, particularly a kind of multiple spot compresses high temperature resistant dynamic seal apparatus.
Background technique
Solid of rotation equipment is the equipment airtight and not stall is moving normally, this kind equipment is very high to the requirement of sealing, both required to guarantee the leakproofness of sealing, do not affect again its rotation, existing motive sealing cannot realize sealing completely, can not avoid air to enter or solid of rotation internal gas overflows, cause energy consumption to increase, heat utilization rate reduces.Have at present two kinds of sealing means, one is noncontact seal, i.e. labyrinth seal, and this sealing, owing to being subject to the radial deflection of cylindrical shell and the impact of axial rotation, constantly increasing the gap between fixing and rotating part, thereby affects sealing effect; One is contact seal, the seal ring connected due to cylindrical shell forms with the sealing compressing tablet being connected with fixed body, this sealing must outer power be pressed on sealing compressing tablet on seal ring, and external force extruding and hot environment are very large to seal ring infringement, and long-term use caused seal failure.
Summary of the invention
The object of the invention is: for solving the undesirable technical problem of sealing effect of existing sealing means, the invention provides a kind of multiple spot and compress high temperature resistant dynamic seal apparatus, compress the axial and radial seal having realized rotating equipment by multiple spot, good sealing effect, and the graphite packing group adopting has high-temperature stability, and the present invention is applicable to large high-temperature turning round equipment.
For achieving the above object, the technical solution used in the present invention is: provide a kind of multiple spot to compress high temperature resistant dynamic seal apparatus, having comprised: seal joint 1, clamping bolt, spring pressuring plate 3, graphite packing group 4; The axial circumference of described seal joint 1 has ladder cylindrical hole, seal joint 1 is in axial compression graphite packing group 4, make the sealing surface close contact of graphite packing group 4 and fixed body 6, and carry out flexibility and fix by axially fastening bolt 8 and compression spring 7 and fixed body 6, realize axial flexible static sealing; The radial circumference of described seal joint 1 is evenly offered bolt hole; Described spring pressuring plate 3 adopts wave structure, one end is fixed by clamping bolt radially 2 and the radial bolts hole of seal joint 1, the other end soars, and the flexible contact by trough and graphite packing group 4 is fixed, described spring pressuring plate 3 presses graphite packing group 4 it is radially evenly compressed, make internal surface and the rotating equipment 5 sealing surface close contacts of graphite packing group 4, realize flexible dynamic seal (packing) radially.
Wherein: described graphite packing group 4 is made up of 2～4 graphite plate roots.
Wherein: the trough amplitude of described spring pressuring plate 3 increases gradually, and each trough is corresponding with the center line of every graphite packing, can guarantee that each packing and the pressure of rotating equipment 5 point of contact are evenly, equate, have strengthened the effect of motive sealing.
Wherein: the material of described spring pressuring plate 3 adopts 65Mn.
Wherein: described radially clamping bolt 2 and axially fasten bolt 8 and all adopt hexagon socket head cap screw, installing space but also the easy maintenance and replacement of not only having saved equipment.
Wherein: the radial force of the suffered spring pressuring plate 3 of described graphite packing group 4 is greater than the axial force of seal joint 1 to graphite packing group 4, guarantee its dynamic radial seal and axial static sealing.
Wherein: the annulus of described seal joint 1 is radially offered bolt hole by 2 °～4 ° around, the quantity of described bolt hole is to compress and counts.The angle of being separated by is 2 °～4 °, is the best angle of sealing, makes sealing effect the best.
Wherein: the applicable working condition temperature range that described multiple spot compresses high temperature resistant dynamic seal apparatus is 300 ℃～500 ℃, while rotating equipment 5 is with the speed uniform rotation of 5～20 rad/min.
Wherein: the annulus peripheral shaft of described seal joint 1 is to opening ladder cylindrical hole by 10 °～15 °, and its angle is determined according to the load of seal joint 1.
Wherein: described ladder circular hole is for the ease of the installation of application hexagon socket head cap screw and fixing, structure be the cylindrical hole of two sections of different-diameters, the cylindrical hole that diameter is large is greater than the nut diameter of hexagon socket head cap screw, its length equals the height summation of nut and compression spring; The cylindrical hole that diameter is little is greater than the diameter of bolt shank, and its length is less than the length of bolt shank.
The invention has the beneficial effects as follows: seal joint axial compression graphite packing group sealing of the present invention, has realized the static sealing axial to rotating equipment; Adopt spring pressuring plate to press graphite packing group, realized the radial compliance motive sealing to rotating equipment; The graphite packing group resistance to high temperature adopting is good, can increase the working life of seal arrangement.The present invention is applicable to large high-temperature turning round equipment, has good market prospects.
Accompanying drawing explanation
Fig. 1 is the structural representation that multiple spot of the present invention compresses high temperature resistant dynamic seal apparatus.
Fig. 2 is the mounting point schematic diagram that multiple spot of the present invention compresses high temperature resistant dynamic seal apparatus.
Fig. 3 is that clamping bolt is fixed on the partial structurtes schematic diagram on seal joint.
Fig. 4 is the structural representation of shoulder hole of the present invention.
Accompanying drawing mark: 1-seal joint, 2-is clamping bolt radially, 3-spring pressuring plate, 4-graphite packing group, 5-rotating equipment, 6-fixed body, 7-compression spring, 8-axially fastens bolt.
Embodiment
Below in conjunction with drawings and Examples, the present invention is described in detail.
With reference to Fig. 1, a kind of multiple spot of the present invention compresses high temperature resistant dynamic seal apparatus, comprising: seal joint 1, clamping bolt, spring pressuring plate 3, graphite packing group 4; The axial circumference of described seal joint 1 has ladder cylindrical hole, seal joint 1 is in axial compression graphite packing group 4, make the sealing surface close contact of graphite packing group 4 and fixed body 6, and carry out flexibility and fix by axially fastening bolt 8 and compression spring 7 and fixed body 6, realize axial flexible static sealing; The radial circumference of described seal joint 1 is evenly offered bolt hole; Described spring pressuring plate 3 adopts wave structure, one end is fixed by clamping bolt radially 2 and the radial bolts hole of seal joint 1, the other end soars, and the flexible contact by trough and graphite packing group 4 is fixed, described spring pressuring plate 3 presses graphite packing group 4 it is radially evenly compressed, make internal surface and the rotating equipment 5 sealing surface close contacts of graphite packing group 4, realize flexible dynamic seal (packing) radially.
Described graphite packing group 4 is made up of 2～4 graphite plate roots.
The trough amplitude of described spring pressuring plate 3 increases gradually, and each trough is corresponding with the center line of every graphite packing, can guarantee that each packing and the pressure of rotating equipment 5 point of contact are evenly, equate, have strengthened the effect of motive sealing.。
The material of described spring pressuring plate 3 adopts 65Mn.
Described radially clamping bolt 2 and axially fasten bolt 8 and all adopt hexagon socket head cap screw, installing space but also the easy maintenance and replacement of not only having saved equipment.
The radial force of the suffered spring pressuring plate 3 of described graphite packing group 4 is greater than the axial force of seal joint 1 to graphite packing group 4, guarantees its dynamic radial seal and axial static sealing.
The annulus of described seal joint 1 is radially offered bolt hole by 2 °～4 ° around, and the quantity of described bolt hole is to compress and counts.The angle of being separated by is 2 °～4 °, is the best angle of sealing, makes sealing effect the best.
The applicable working condition temperature range that described multiple spot compresses high temperature resistant dynamic seal apparatus is 300 ℃～500 ℃, and rotating equipment 5 is with the speed uniform rotation of 5～20 rad/min simultaneously.
The annulus peripheral shaft of described seal joint 1 is to opening ladder cylindrical hole by 10 °～15 °, and its angle is determined according to the load of seal joint 1.
Described ladder circular hole is for the ease of the installation of application hexagon socket head cap screw and fixing, structure be the cylindrical hole of two sections of different-diameters, the cylindrical hole that diameter is large is greater than the nut diameter of hexagon socket head cap screw, its length equals the height summation of nut and compression spring; The cylindrical hole that diameter is little is greater than the diameter of bolt shank, and its length is less than the length of bolt shank.
Embodiment 1(stresses the application of the present invention in rotary kiln pyrogenation stove)
A kind of multiple spot compresses high temperature resistant dynamic seal apparatus and is applied in rotary kiln pyrogenation stove, in described rotary kiln pyrogenation stove, pyrolytic reaction occurs, and reaction temperature, at 400 ℃～450 ℃, is rotated with the speed of 6～8 rad/min simultaneously.
The present invention seals between rotary kiln pyrogenation stove two ends and fixed body 6, (between the interior surface of contact of the sealing surface of rotating equipment and graphite packing group, pass through flexible contact, when the roughness that causes due to processing when the outer surface of rotating equipment is inhomogeneous, also can make the sealing surface of rotating equipment contact with the sealing that the interior surface of contact of graphite packing group keeps good, can also guarantee the normal rotation of the equipment of walking around.) the axial circumference of described seal joint 1 has ladder circular hole, compression spring 7 is installed and is connected with the bolt hole of fixed body 6 by axially fastening bolt 8, carry out flexibility fixing, annulus is around by axially fastening bolt 8 to graphite packing group 4 axial compression, the sealing surface close contact that makes graphite packing group 4 and fixed body 6, guarantees axial static sealing; Seal joint 1 is locked awave spring pressuring plate 3 by clamping bolt 2 radially, make each trough corresponding with the center line of every graphite packing, make the internal surface of graphite packing group 4 and the sealing surface close contact of rotary kiln pyrogenation stove, guarantee the flexible radial force to graphite packing group 4, strengthened the effect of dynamic seal (packing).The radial force of described spring pressuring plate 3 is greater than the axial force of seal joint 1 to graphite packing group 4, has guaranteed dynamic seal (packing) radially.
Of the present invention simple in structure, good sealing effect has played very important effect in pyrolysis system.
Embodiment 2(stresses the application of the present invention in the heating and stirring tank equipment of sludge treating system)
Reaction temperature in heating and stirring tank is 400 ℃～500 ℃, and tank body is fixed body, and live axle is rotating equipment.Live axle is with the speed uniform rotation of 14～16 rad/min.
The present invention seals between the live axle of heating and stirring tank and tank body, between the interior surface of contact of the sealing surface of live axle and graphite packing group, pass through flexible contact, when the roughness that causes due to processing when the outer surface of live axle is inhomogeneous, also can make the sealing surface of live axle contact with the sealing that the interior surface of contact of graphite packing group keeps good, can also guarantee the normal rotation of live axle.The axial circumference of described seal joint 1 has ladder circular hole, compression spring 7 is installed and is connected with the bolt hole of fixed body 6 by axially fastening bolt 8, carry out flexibility fixing, axially to graphite packing group 4 axial compression, the sealing surface close contact that makes graphite packing group 4 and tank body, guarantees axial static sealing; Seal joint 1 is locked awave spring pressuring plate 3 by clamping bolt 2 radially, make each trough corresponding with the center line of every graphite packing, make the internal surface of graphite packing group 4 and the sealing surface close contact of heating and stirring tank, guarantee the flexible radial force to graphite packing group 4, strengthened the effect of dynamic seal (packing).The radial force of described spring pressuring plate 3 is greater than the axial force of seal joint 1 to graphite packing group 4, has guaranteed dynamic seal (packing) radially.
Embodiment 3(stresses the application in the aggregate drying cylinder equipment of the present invention in asphalt mixing system)
Reaction temperature in heating and stirring tank is 450 ℃～480 ℃, and cylindrical shell is rotating equipment, and entrance barrel cover, the outlet barrel cover on cylindrical shell both sides are fixed body.Cylindrical shell is with the speed uniform rotation of 7～9rad/min.
The present invention is to sealing between aggregate drying cylinder two ends and entrance barrel cover, outlet barrel cover, between the interior surface of contact of the sealing surface of cylindrical shell and graphite packing group, pass through flexible contact, when the roughness that causes due to processing when the outer surface of cylindrical shell is inhomogeneous, also can make the sealing surface of cylindrical shell contact with the sealing that the interior surface of contact of graphite packing group keeps good, can also guarantee the normal rotation of cylindrical shell.The axial circumference of described seal joint 1 has ladder circular hole, compression spring 7 is installed and is connected with the bolt hole of fixed body 6 by axially fastening bolt 8, carry out flexibility fixing, annulus is around by axially fastening bolt 8 to graphite packing group 4 axial compression, make graphite packing group 4 and the entrance barrel cover on cylindrical shell both sides, the sealing surface close contact of outlet barrel cover, guarantee axial static sealing; Seal joint 1 is locked awave spring pressuring plate 3 by clamping bolt 2 radially, make each trough corresponding with the center line of every graphite packing, make the internal surface of graphite packing group 4 and the sealing surface close contact of aggregate drying cylinder, guarantee the flexible radial force to graphite packing group 4, strengthened the effect of dynamic seal (packing).The radial force of described spring pressuring plate 3 is greater than the axial force of seal joint 1 to graphite packing group 4, has guaranteed dynamic seal (packing) radially.
Above content is the further description of the present invention being done in conjunction with optimal technical scheme, can not assert that the concrete enforcement of invention only limits to these explanations.Concerning general technical staff of the technical field of the invention, not departing under the prerequisite of design of the present invention, can also make simple deduction and replacement, all should be considered as protection scope of the present invention.
Claims (10)
1. multiple spot compresses a high temperature resistant dynamic seal apparatus, it is characterized in that: described multiple spot compresses high temperature resistant dynamic seal apparatus and comprises: seal joint (1), clamping bolt, spring pressuring plate (3), graphite packing group (4); The axial circumference of described seal joint (1) has ladder cylindrical hole, seal joint (1) is in axial compression graphite packing group (4), make the sealing surface close contact of graphite packing group (4) and fixed body (6), and carry out flexibility and fix by axially fastening bolt (8) and compression spring (7) and fixed body (6), realize axial flexible static sealing; The radial circumference of described seal joint (1) is evenly offered bolt hole; Described spring pressuring plate (3) adopts wave structure, one end is fixed by clamping bolt (2) radially and the radial bolts hole of seal joint (1), the other end soars, and the flexible contact by trough and graphite packing group (4) is fixed, described spring pressuring plate (3) presses graphite packing group (4) it is radially evenly compressed, make internal surface and rotating equipment (5) the sealing surface close contact of graphite packing group (4), realize flexible dynamic seal (packing) radially.
2. a kind of multiple spot according to claim 1 compresses high temperature resistant dynamic seal apparatus, it is characterized in that: described graphite packing group (4) is made up of 2～4 graphite plate roots.
3. a kind of multiple spot according to claim 1 compresses high temperature resistant dynamic seal apparatus, it is characterized in that: the trough amplitude of described spring pressuring plate (3) increases gradually, and each trough is corresponding with the center line of every graphite packing.
4. compress high temperature resistant dynamic seal apparatus according to a kind of multiple spot described in claim 1 or 3, it is characterized in that: the material of described spring pressuring plate (3) adopts 65Mn.
5. a kind of multiple spot according to claim 1 compresses high temperature resistant dynamic seal apparatus, it is characterized in that: described radially clamping bolt (2) and axially fasten bolt (8) and all adopt hexagon socket head cap screw.
6. a kind of multiple spot according to claim 1 compresses high temperature resistant dynamic seal apparatus, it is characterized in that: the radial force of the suffered spring pressuring plate (3) of described graphite packing group (4) is greater than the axial force of seal joint (1) to graphite packing group (4).
7. a kind of multiple spot according to claim 1 compresses high temperature resistant dynamic seal apparatus, it is characterized in that: the annulus of described seal joint (1) is radially offered bolt hole by 2 °～4 ° around, and the quantity of described bolt hole is to compress and counts.
8. a kind of multiple spot according to claim 1 compresses high temperature resistant dynamic seal apparatus, it is characterized in that: the applicable working condition temperature range that described multiple spot compresses high temperature resistant dynamic seal apparatus is 300 ℃～500 ℃, rotating equipment (5) is with the speed uniform rotation of 5～20 rad/min simultaneously.
9. a kind of multiple spot according to claim 1 compresses high temperature resistant dynamic seal apparatus, it is characterized in that: the annulus peripheral shaft of described seal joint (1) is to opening ladder cylindrical hole by 10 °～15 °, and its angle is determined according to the load of seal joint (1).
10. a kind of multiple spot according to claim 1 compresses high temperature resistant dynamic seal apparatus, it is characterized in that: the structure of described ladder circular hole is the cylindrical hole of two sections of different-diameters, the cylindrical hole that diameter is large is greater than the nut diameter of hexagon socket head cap screw, and its length equals the height summation of nut and compression spring; The cylindrical hole that diameter is little is greater than the diameter of bolt shank, and its length is less than the length of bolt shank.
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| CN201410127156.6A CN103867724B (en) | 2014-04-01 | 2014-04-01 | A kind of multiple spot compresses high temperature resistant dynamic seal apparatus |
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| CN201410127156.6A CN103867724B (en) | 2014-04-01 | 2014-04-01 | A kind of multiple spot compresses high temperature resistant dynamic seal apparatus |
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| CN103867724B CN103867724B (en) | 2015-10-28 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104154243A (en) * | 2014-06-19 | 2014-11-19 | 宁波天生密封件有限公司 | Sealing method of compression padding with density gradient and compression padding produced according to method |
| CN107740881A (en) * | 2017-11-15 | 2018-02-27 | 陈风琴 | A kind of valve with regulation leak-stopping function |
| CN108468809A (en) * | 2018-04-03 | 2018-08-31 | 农业部规划设计研究院 | A kind of biomass continuous pyrolysis dynamic sealing mechanism and method |
| CN108916387A (en) * | 2018-09-18 | 2018-11-30 | 启迪桑德环境资源股份有限公司 | For dynamic sealing means of the rotating shaft in uneven radial deformation state |
| CN111074027A (en) * | 2020-01-22 | 2020-04-28 | 北京首钢国际工程技术有限公司 | Blast furnace ironmaking distributing device water-cooling gas tight box combination sealing device |
| CN111351346A (en) * | 2020-03-16 | 2020-06-30 | 江苏鹏飞集团股份有限公司 | Rotary kiln barrel water spraying cooling device |
| CN111457719A (en) * | 2020-03-17 | 2020-07-28 | 中信重工机械股份有限公司 | Pyrolysis rotary kiln sealing device that floats |
| CN114719624A (en) * | 2022-04-29 | 2022-07-08 | 二重（德阳）重型装备有限公司 | High-temperature rotor rotary sealing structure, mounting method and control method of compensation pressure |
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| JPS552848A (en) * | 1978-06-22 | 1980-01-10 | Arai Pump Mfg Co Ltd | Shaft sealing device |
| US7021632B2 (en) * | 2004-03-04 | 2006-04-04 | Flowserve Management Company | Self-energized gasket and manufacturing method therefor |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104154243A (en) * | 2014-06-19 | 2014-11-19 | 宁波天生密封件有限公司 | Sealing method of compression padding with density gradient and compression padding produced according to method |
| CN107740881A (en) * | 2017-11-15 | 2018-02-27 | 陈风琴 | A kind of valve with regulation leak-stopping function |
| CN108468809A (en) * | 2018-04-03 | 2018-08-31 | 农业部规划设计研究院 | A kind of biomass continuous pyrolysis dynamic sealing mechanism and method |
| CN108916387A (en) * | 2018-09-18 | 2018-11-30 | 启迪桑德环境资源股份有限公司 | For dynamic sealing means of the rotating shaft in uneven radial deformation state |
| CN108916387B (en) * | 2018-09-18 | 2024-04-26 | 启迪环境科技发展股份有限公司 | Dynamic sealing device for a rotary shaft in a non-uniform radial deformation state |
| CN111074027A (en) * | 2020-01-22 | 2020-04-28 | 北京首钢国际工程技术有限公司 | Blast furnace ironmaking distributing device water-cooling gas tight box combination sealing device |
| CN111074027B (en) * | 2020-01-22 | 2024-03-29 | 北京首钢国际工程技术有限公司 | Combined sealing device for water-cooling airtight box of blast furnace ironmaking distributor |
| CN111351346A (en) * | 2020-03-16 | 2020-06-30 | 江苏鹏飞集团股份有限公司 | Rotary kiln barrel water spraying cooling device |
| CN111351346B (en) * | 2020-03-16 | 2021-11-19 | 江苏鹏飞集团股份有限公司 | Rotary kiln barrel water spraying cooling device |
| CN111457719A (en) * | 2020-03-17 | 2020-07-28 | 中信重工机械股份有限公司 | Pyrolysis rotary kiln sealing device that floats |
| CN111457719B (en) * | 2020-03-17 | 2022-03-22 | 中信重工机械股份有限公司 | Pyrolysis rotary kiln sealing device that floats |
| CN114719624A (en) * | 2022-04-29 | 2022-07-08 | 二重（德阳）重型装备有限公司 | High-temperature rotor rotary sealing structure, mounting method and control method of compensation pressure |
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Effective date of registration: 20200420 Address after: 116000 1st floor, no.13-5, Guanggu Road, Dalian Economic and Technological Development Zone, China (Liaoning) pilot Free Trade Zone, Dalian City, Liaoning Province Patentee after: DALIAN HUANZI TECHNOLOGY Co.,Ltd. Address before: Shahekou District of Dalian City, Liaoning province 116000 righteousness Street No. 8 Junan apartment Patentee before: DALIAN RONGDA RESOURCE CYCLIC UTILIZATION CONSULTING AND DESIGN Co.,Ltd. |