CN203836218U - Sealing device with curved sealing teeth and rotary machine with sealing device - Google Patents
Sealing device with curved sealing teeth and rotary machine with sealing device Download PDFInfo
- Publication number
- CN203836218U CN203836218U CN201320744061.XU CN201320744061U CN203836218U CN 203836218 U CN203836218 U CN 203836218U CN 201320744061 U CN201320744061 U CN 201320744061U CN 203836218 U CN203836218 U CN 203836218U
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- tooth
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- 238000007789 sealing Methods 0.000 title claims abstract description 153
- 239000012530 fluid Substances 0.000 claims abstract description 55
- 230000003068 static effect Effects 0.000 claims abstract description 13
- 230000001154 acute effect Effects 0.000 claims description 16
- 210000000332 tooth crown Anatomy 0.000 claims description 9
- 210000004907 gland Anatomy 0.000 claims description 6
- 230000000694 effects Effects 0.000 abstract description 12
- 238000013461 design Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 11
- 230000000979 retarding effect Effects 0.000 description 7
- 230000003116 impacting effect Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 230000009467 reduction Effects 0.000 description 5
- 230000003287 optical effect Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000006378 damage Effects 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000003292 diminished effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000000930 thermomechanical effect Effects 0.000 description 1
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- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
Abstract
The utility model discloses a sealing device with curved sealing teeth and a rotary machine with the sealing device. The sealing device comprises a static component sealing body (1) used for fixing the sealing device, a sealing ring (2) used for controlling the size of space of the sealing device, long sealing teeth (3), short sealing teeth (4), a boss (6) on a shaft, and a rotary component rotation shaft (5) arranged on the rotary machine. The long sealing teeth (3) and the short sealing teeth (4) can control fluid leakage quantity of the sealing device. The sealing device with the curved sealing teeth is characterized in that the long sealing teeth (3) and the short sealing teeth (4) are curved. The sealing device with the curved sealing teeth is compact in structure and reasonable in design, the fluid sealing effect of the rotary machine is improved, a sealing gap can automatically changes under different work conditions, economical efficiency and safety are improved, and the sealing device can be widely applied to sealing of fluid working media in various rotary machines.
Description
Technical field
The utility model relates to rotating machinery Fluid Sealing field, is the noncontact seal device that a kind of rotating machinery is used.
Background technique
A large amount of rotating machineries be take fluid as working medium, need the leakage taking seal approach to reduce or stops working medium, to improve efficiency, the harm of minimizing to environment of this rotating machinery between rotary component and static part.Noncontact seal is a kind of sealing technique generally adopting.
Noncontact seal is mainly by the sealing tooth on static part, boss on rotary component or sealing tooth etc. and surface on static part or rotary component, to form the whirlpool of realizing in throttling and Seal cage in gap, narrow and small aperture dissipate and realize the object that reduces leakage rate.
In rotating machinery, extensively adopt various noncontact seal devices, as shown in Figure 1, Figure 2, three kinds of traditional seal arrangements providing of Fig. 3.Its principle is to form throttle clearance and fluid expansion chamber between sealing tooth and the rotating shaft of rotary component, make the fluid passing through produce throttling and thermomechanical effect, the kinetic energy of fluid self consumes gradually, flow reduces gradually, finally realize sealing state, reach the effect of sealing, so sealing tooth and rotating shaft play a part crucial for the quality of sealing effect, in traditional seal arrangement, seal tooth and mostly be linear structure, and seal clearance to be in operation be immutable, this has limited the space size that fluid dynamic energy consumes to a certain extent, fluid leakage amount increases, affect sealing effect, reduced rotating machine efficiency.
Model utility content
The utility model, in order to overcome the above-mentioned defect of prior art, has proposed a kind of seal arrangement that adopts camber sealing tooth.
According to an aspect of the present utility model, proposed a kind of seal arrangement that adopts curvilinerar figure sealing tooth comprise the static part seal of fixing seal device, control the seal ring of seal gland space size, the long sealing tooth that can control seal arrangement fluid leakage amount and short sealing tooth and axle convex platform, rotating machinery device on rotary component running shaft, long sealing tooth and short sealing tooth are curved configuration.
Preferably, curvilinerar figure sealing tooth by tooth root position to the attenuation gradually of crown position.
Preferably, curvilinerar figure sealing tooth crown position is met to fluid and is carried out flow path direction, and crown position and axis keep certain acute angle, and the angle of described acute angle is 25-65 °.
Preferably, sealing tooth has elasticity, and this elasticity makes to seal tooth and when bearing external force, produces distortion by a small margin.
Preferably, leak fluid has produced and has turned back when impacting curved sealing tooth, has formed retarding effect near aperture, has increased on-way resistance, has reduced the leakage rate of fluid.
Preferably, if bump at rotating machinery curvilinerar figure sealing tooth in service and rotary component, sealing tooth produces distortion and makes a concession, and avoids the continuous friction with rotary component.
According to other one side of the present utility model, a kind of rotating machinery seal arrangement has also been proposed, comprise the static part seal of fixing seal device, the seal ring of controlling seal gland space size, the sealing tooth that can control seal arrangement fluid leakage amount, the rotary component running shaft on rotating machinery device, sealing tooth is curvilinear structures.
Preferably, curvilinerar figure sealing tooth by tooth root position to the attenuation gradually of crown position.
Preferably, curvilinerar figure sealing tooth crown position is met to fluid and is carried out flow path direction, and crown position and axis keep certain acute angle, and the number of degrees of described acute angle are 25-65 °.
Preferably, sealing tooth has elasticity, and this elasticity makes to seal tooth and when bearing external force, produces distortion by a small margin.
Preferably, leak fluid has produced and has turned back when impacting curved sealing tooth, has formed retarding effect near aperture, has increased on-way resistance, has reduced the leakage rate of fluid.
Preferably, if bump at rotating machinery curvilinerar figure sealing tooth in service and rotary component, sealing tooth produces distortion and makes a concession, and avoids the continuous friction with rotary component.
According on the other hand of the present utility model, a kind of rotating machinery seal arrangement has been proposed, comprise the static part seal of fixing seal device, the seal ring of controlling seal gland space size, the sealing tooth that can control seal arrangement fluid leakage amount and rotary component sealing tooth, sealing tooth is curvilinear structures.
Preferably, curvilinerar figure sealing tooth by tooth root position to the attenuation gradually of crown position.
Preferably, curvilinerar figure sealing tooth crown position is met to fluid and is carried out flow path direction, and crown position and axis keep certain acute angle, and the number of degrees of described acute angle are 25-65 °.
Preferably, sealing tooth has elasticity, and this elasticity makes to seal tooth and when bearing external force, produces distortion by a small margin.
Preferably, leak fluid has produced and has turned back when impacting curved sealing tooth, has formed retarding effect near aperture, has increased on-way resistance, has reduced the leakage rate of fluid.
Preferably, if bump at rotating machinery curvilinerar figure sealing tooth in service and rotary component, sealing tooth produces distortion and makes a concession, and avoids the continuous friction with rotary component.
The utility model overall structure is similar to conventional non-contacting sealing structure, but has adopted curvilinerar figure sealing tooth, the lower end deflection fluid inlet side of sealing tooth, increase turning back of fluid, form the retarding effect before aperture, increased the resistance along journey, strengthened sealing effect; In rotating machinery start-up course, seal clearance is larger, and when machinery is normally worked, under the differential pressure action of front and back, the distortion of elasticity heterodont reduces seal clearance; When rotary component and the collision of elastic packing tooth, the distortion of sealing tooth is made a concession, and avoids the continuous friction with rotary component.The utility model compact structure, reasonable in design, has improved the effect of rotating machinery Fluid Sealing, in different operating condition lower seal gap, can independently change, and has improved Economy and Security, can generally be applicable to the sealing of fluid working substance in all kinds of rotating machineries.
The utility model has the advantages that: 1. this body structure of curvilinerar figure sealing tooth produces fluid to turn back and causes near retarding effect aperture when encountering sealing tooth, has reduced leakage rate.2. sealing tooth structure and material own is selected and is made to seal tooth and have certain elasticity, can keep when mounted larger seal clearance, in mechanically activated or stopping process; pressure reduction before and after sealing tooth is less; seal clearance is larger, is convenient to mechanical rapid starting/stopping, avoids touching mill.Before and after sealing tooth in the process increasing at mechanical load, pressure reduction increases, and makes to seal tooth generation resiliently deformable, and seal clearance diminishes, and has reduced leakage rate.3. in mechanical movement process, if there is the collision of sealing tooth and rotary component, good elasticity makes to seal the tooth yielding that deforms, and has avoided the continuous friction with rotary component, thereby avoided sealing tooth damage influence sealing effect, avoided the damage to rotary component simultaneously.
Accompanying drawing explanation
Fig. 1 is traditional labyrinth-type excluder schematic diagram;
Fig. 2 is traditional optical axis seal arrangement schematic diagram;
Fig. 3 is the seal arrangement schematic diagram of tradition to toothing;
Fig. 4 is according to the labyrinth-type excluder schematic diagram of the utility model one embodiment's adapted curvilinerar figure sealing tooth;
Fig. 5 is according to the optical axis seal arrangement schematic diagram of another embodiment's of the utility model adapted curvilinerar figure sealing tooth;
Fig. 6 be according to another embodiment's of the utility model adapted curvilinerar figure sealing tooth to toothing seal arrangement schematic diagram;
Fig. 7 is according to the labyrinth-type excluder schematic diagram of the special-shaped boss of band of another embodiment's of the utility model adapted curvilinerar figure sealing tooth.
Embodiment
For making the object, technical solutions and advantages of the present invention clearer, below in conjunction with specific embodiment, and with reference to accompanying drawing, the present invention is described in more detail.
For explanation more clearly; below list concrete mode of execution, according to the difference of actual machine, can have more mode of execution; every employing curvilinerar figure sealing tooth strengthens sealing effect, guarantees that the flexibility of mechanical movement and the seal arrangement of Security are all within protection scope of the present invention.
Fig. 4 is according to the labyrinth-type excluder schematic diagram of the utility model one embodiment's adapted curvilinerar figure sealing tooth.
As shown in Figure 4, sealing device comprises static part seal 1, seal ring 2, long sealing tooth 3, short sealing tooth 4, rotary component running shaft 5, axle convex platform 6 etc.Fluid flows into after seal arrangement, affected by the throttling of long sealing tooth 3, pressure drop; Enter the chamber of the seal arrangement of long sealing tooth 3, seal ring 2, short sealing tooth 4 (being positioned at axle convex platform 6 tops) and axle convex platform 6 compositions, fluid forms larger whirlpool, the kinetic energy of self consumes gradually, by the also minimizing thereupon of Fluid Volume of seal arrangement, thereby reaches sealing effect.Compare with traditional labyrinth-type excluder (as shown in Figure 1), it is characterized in that long sealing tooth 3 and short sealing tooth 4 are for curved configuration, curvilinerar figure sealing tooth crown position is met to fluid and is carried out flow path direction, and crown position and axis keep certain acute angle 25-65 °.Curvilinerar figure sealing tooth has certain elasticity, can produce distortion by a small margin when bearing external force.Leak fluid has produced and has turned back when impacting curvilinerar figure sealing tooth, has formed retarding effect near aperture, has increased on-way resistance, has reduced the leakage rate of fluid.Sealing tooth seal clearance start up period of rotating machinery is larger, and when rotating machinery is normally worked, before and after working fluid, under the effect of pressure reduction, the distortion of curvilinerar figure sealing tooth crown, diminishes seal clearance.If bump at rotating machinery curvilinerar figure sealing tooth in service and rotary component, sealing tooth produces distortion and makes a concession, and avoids the continuous friction with rotary component.
As shown in Figure 5, for seal the optical axis seal arrangement schematic diagram of tooth according to another embodiment's of the utility model adapted curvilinerar figure.This seal arrangement, comprises static part seal 1, seal ring 2, sealing tooth 7, rotary component running shaft 5 etc.Fluid flows into after seal arrangement, and the throttling that is first sealed tooth 7 affects, pressure drop; Enter in the chamber of the seal arrangement that seals tooth 7, seal ring 2, rotary component running shaft 5 compositions, fluid forms larger whirlpool, and the kinetic energy of self consumes gradually, by the also minimizing thereupon of Fluid Volume of seal arrangement, thereby reaches sealing effect.Compare with traditional optical axis seal arrangement (as shown in Figure 2), it is characterized in that sealing tooth 7 for curved configuration, curvilinerar figure sealing tooth crown position is met to fluid and is carried out flow path direction, and crown position and axis keep certain acute angle 25-65 °.Curvilinerar figure sealing tooth has certain elasticity, can produce distortion by a small margin when bearing external force.
As shown in Figure 6, for according to the utility model again an embodiment adapted curvilinerar figure sealing tooth to toothing seal arrangement schematic diagram.This seal arrangement, comprises static part seal 1, seal ring 2, sealing tooth 9, rotary component sealing tooth 8 etc.Fluid flows into after seal arrangement, affected by the throttling of long sealing tooth 3, pressure drop; Enter in the chamber of the seal arrangement that seals tooth 9, seal ring 2, rotary component sealing tooth 8 compositions, fluid forms larger whirlpool, and the kinetic energy of self consumes gradually, by the also minimizing thereupon of Fluid Volume of seal arrangement, thereby reaches sealing effect.With tradition, the seal arrangement of toothing (as shown in Figure 3) is compared, the utility model sealing tooth 9 and rotary component sealing tooth 8 are curved configuration, curvilinerar figure sealing tooth 9 tradition to the basis of toothing on, crown position is met to fluid and carried out flow path direction, and crown position and axis keep certain acute angle 25-65 °.Curvilinerar figure sealing tooth has certain elasticity, can produce distortion by a small margin when bearing external force.
As shown in Figure 7, for seal the labyrinth-type excluder schematic diagram with camber boss of tooth according to an embodiment's more of the present utility model adapted curvilinerar figure.Compare with the labyrinth-type excluder of the adapted curvilinerar figure sealing tooth shown in Fig. 4, difference is that the cross section of axle convex platform 10 is arc section.By the side of the boss on running shaft 10 (suction side of fluid) is processed into arc shape as shown in Figure 7, during the camber boss 10 of leak fluid on impacting running shaft, acutely turn back and changed the fluid eddy structure of sealed chamber, increase on-way resistance, reduced the leakage rate of fluid.
The utility model adopts curved sealing tooth to substitute traditional various straight line type sealing teeth.The attenuation gradually from tooth root to crown of sealing tooth.Tooth root portion is embedded on labyrinth ring or labyrinth casing.The crown of sealing tooth is met to fluid and is carried out flow path direction.Crown and the spin axis of sealing tooth keep an acute angle, 25-65 °.The curved configuration of sealing tooth and gradually thin structure make to seal tooth in conjunction with applicable material and have appropriate elasticity, can produce distortion by a small margin when bearing certain external force.Sealing tooth when mounted or to seal pressure reduction before and after tooth when mechanically activated be 0 or very little, and sealing tooth keeps free state, makes seal clearance larger, is convenient to machinery and starts fast and impact and rub do not occur.At machinery, gradually in application of load process, before and after sealing tooth, pressure reduction increases gradually, and sealing tooth is out of shape gradually, and seal clearance is diminished, the leakage flow while having reduced work.Because sealing tooth and axis keep the elasticity of certain angle and sealing tooth, when sealing tooth occurring collide with rotary component, seal the easily deformable yielding of tooth, thereby avoid the continuous friction with rotary component.Meet to fluid and come the curvilinerar figure sealing tooth of flow path direction to make fluid produce turning back to a certain degree after impacting sealing tooth, near aperture, formed thus retarding effect, further reduced leakage rate.
Above-described specific embodiment; the technical solution of the utility model is further described; institute is understood that; the foregoing is only specific embodiment of the utility model; be not limited to the utility model; all within spirit of the present utility model and principle, any modification of making, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.
Claims (4)
1. a seal arrangement that adopts curvilinerar figure sealing tooth, comprise the rotary component running shaft (5) on the static part seal (1) of fixing seal device, the seal ring (2) of controlling seal gland space size, the long sealing tooth (3) that can control seal arrangement fluid leakage amount and short sealing tooth (4) and axle convex platform (6), rotating machinery device, it is characterized in that, long sealing tooth (3) and short sealing tooth (4) are curved configuration.
2. seal arrangement according to claim 1, is characterized in that, curvilinerar figure sealing tooth to the attenuation gradually of crown position, has elasticity by tooth root position, and this elasticity makes to seal tooth and when bearing external force, produces distortion by a small margin; Curvilinerar figure sealing tooth crown position is met to fluid and is carried out flow path direction, and crown position and axis keep certain acute angle, and the angle of described acute angle is 25-65 °.
3. a rotating machinery seal arrangement, comprise the static part seal (1) of fixing seal device, the seal ring (2) of controlling seal gland space size, the sealing tooth (7) that can control seal arrangement fluid leakage amount, the rotary component running shaft (5) on rotating machinery device, it is characterized in that, sealing tooth (7) is curvilinear structures, curvilinerar figure sealing tooth by tooth root position to the attenuation gradually of crown position, sealing tooth has elasticity, and this elasticity makes to seal tooth and when bearing external force, produces distortion by a small margin; Curvilinerar figure sealing tooth crown position is met to fluid and is carried out flow path direction, and crown position and axis keep certain acute angle, and the number of degrees of described acute angle are 25-65 °.
4. a rotating machinery seal arrangement, comprise the static part seal (1) of fixing seal device, the seal ring (2) of controlling seal gland space size, the sealing tooth (9) that can control seal arrangement fluid leakage amount and rotary component sealing tooth (8), it is characterized in that, sealing tooth (9) is curvilinear structures, curvilinerar figure sealing tooth by tooth root position to the attenuation gradually of crown position, sealing tooth has elasticity, and this elasticity makes to seal tooth and when bearing external force, produces distortion by a small margin; Curvilinerar figure sealing tooth crown position is met to fluid and is carried out flow path direction, and crown position and axis keep certain acute angle, and the number of degrees of described acute angle are 25-65 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320744061.XU CN203836218U (en) | 2013-11-21 | 2013-11-21 | Sealing device with curved sealing teeth and rotary machine with sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320744061.XU CN203836218U (en) | 2013-11-21 | 2013-11-21 | Sealing device with curved sealing teeth and rotary machine with sealing device |
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| Publication Number | Publication Date |
|---|---|
| CN203836218U true CN203836218U (en) | 2014-09-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320744061.XU Expired - Lifetime CN203836218U (en) | 2013-11-21 | 2013-11-21 | Sealing device with curved sealing teeth and rotary machine with sealing device |
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| CN (1) | CN203836218U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105134954A (en) * | 2015-09-14 | 2015-12-09 | 沈阳航空航天大学 | Novel hole type sealing structure capable of improving sealing characteristic and damping characteristic |
| CN106285790A (en) * | 2015-06-05 | 2017-01-04 | 上海汽轮机厂有限公司 | Gland seal structure |
| CN107355540A (en) * | 2017-08-18 | 2017-11-17 | 国网湖南省电力公司 | Gap adaptively adjusts sealing structure |
| CN112984114A (en) * | 2021-02-04 | 2021-06-18 | 同济大学 | Low-temperature medium rotary sealing device of superconducting machinery of hollow shaft parts |
-
2013
- 2013-11-21 CN CN201320744061.XU patent/CN203836218U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106285790A (en) * | 2015-06-05 | 2017-01-04 | 上海汽轮机厂有限公司 | Gland seal structure |
| CN106285790B (en) * | 2015-06-05 | 2019-10-25 | 上海汽轮机厂有限公司 | Gland seal structure |
| CN105134954A (en) * | 2015-09-14 | 2015-12-09 | 沈阳航空航天大学 | Novel hole type sealing structure capable of improving sealing characteristic and damping characteristic |
| CN107355540A (en) * | 2017-08-18 | 2017-11-17 | 国网湖南省电力公司 | Gap adaptively adjusts sealing structure |
| CN112984114A (en) * | 2021-02-04 | 2021-06-18 | 同济大学 | Low-temperature medium rotary sealing device of superconducting machinery of hollow shaft parts |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140917 |