CN103047171B - The global function throttling arrangement that floats - Google Patents
The global function throttling arrangement that floats Download PDFInfo
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- CN103047171B CN103047171B CN201210575176.0A CN201210575176A CN103047171B CN 103047171 B CN103047171 B CN 103047171B CN 201210575176 A CN201210575176 A CN 201210575176A CN 103047171 B CN103047171 B CN 103047171B
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Abstract
The invention belongs to fluid machinery Sealing Technology, be specifically related to a kind of unsteady throttling arrangement of global function that can reduce centrifugal pump leakage loss. The present invention includes fluctuate hermetical ring, fluctuate hermetical ring is sheathed on the outer wall place of revolving part, and fluctuate hermetical ring is located between revolving part and fixture, between fluctuate hermetical ring inwall and revolving part outer wall, form matched in clearance, radial clearance between fluctuate hermetical ring outer wall and fixture inwall is greater than the radial clearance between fluctuate hermetical ring inwall and revolving part outer wall, and this throttling arrangement also comprises for limiting fluctuate hermetical ring the anti-rotation unit rotating and the axial anti-vibration unit that limits fluctuate hermetical ring axial motion. Due to the existence of anti-rotation unit and axial anti-vibration unit, avoid wearing and tearing and the Problem of Failure of fluctuate hermetical ring; Also effectively avoided the seal face flutter, the gap that cause because of unit vibration to strengthen and leak simultaneously; Thereby greatly improve the reliability of unit operation and and extended service life of unit.
Description
Technical field
The invention belongs to fluid machinery Sealing Technology, be specifically related to one and can reduce centrifugal pump leakage lossGlobal function float throttling arrangement.
Background technology
The main method that reduces centrifugal pump leakage loss is to make revolving part (axle, axle sleeve, impeller ring)And between fixture (pump housing, blower inlet casing, gland), form more closely spaced leakage seam, increase by letting outThe flow resistance of crack fluid, its volumetric efficiency reduces the low ratio of low discharge along with the minimizing of flow and specific speedThe volumetric efficiency of speed centrifugal pump is in 70% left and right, even lower. But in use, along with rotationThe wearing and tearing of part or fixture, the gap of leaking seam will progressively increase, and leaking also will be along with increase, and this is defeatedSend in the centrifugal pump with solid particle fluid particularly evident.
For above-mentioned situation, technical staff's sandwiched between impeller ring and the pump housing or blower inlet casing is floated closeSeal ring, but still there is following problem in technique scheme: first, in the time that fluid machinery is worked, float closeSeal ring is along with revolving part is made synchronous or rotating Vortex, and in rotary course, fluctuate hermetical ring will wear and tear graduallyAnd until ultimate failure, service life is low; Secondly, existing fluctuate hermetical ring limits its radial position moreState, unrestricted for the axial direction of fluctuate hermetical ring, that is to say, fluctuate hermetical ring is usingTime its end play very large, and in water pump assembly running, be inevitably accompanied by vibration, causeSeal face produces flutter, gap is strengthened and leaked; In addition, contain solid particle medium in conveyingTime, seal face can cause seal failure because flutter enters solid particle.
Summary of the invention
The object of this invention is to provide the unsteady throttling arrangement of a kind of global function, it is simple in structure, reliable operationHigh and the long service life of property.
For achieving the above object, the present invention has adopted following technical scheme: the unsteady throttling dress of a kind of global functionPut, comprise fluctuate hermetical ring, described fluctuate hermetical ring is sheathed on the outer wall place of revolving part, and floating sealRing is located between revolving part and fixture, between described fluctuate hermetical ring inwall and revolving part outer wall, formsMatched in clearance, the radial clearance between described fluctuate hermetical ring outer wall and fixture inwall is greater than floating sealRadial clearance between ring inwall and revolving part outer wall, this throttling arrangement also comprises for limiting floating sealThe axial anti-vibration unit of the anti-rotation unit that ring rotates and restriction fluctuate hermetical ring axial motion.
Beneficial effect of the present invention is: after adopting said structure, and in the time that fluid machinery is worked, byIn the existence of anti-rotation unit, fluctuate hermetical ring is not no longer made synchronous or rotating Vortex along with revolving part, just not yetThere is wearing and tearing and the Problem of Failure of fluctuate hermetical ring; And due to the existence of axial anti-vibration unit, effectivelyAvoid the seal face flutter, the gap that cause because of unit vibration to strengthen and leak; Also meanwhile,Avoided in the time that conveying contains solid particle medium, seal face causes close because flutter enters solid particleEnvelope lost efficacy, thereby had greatly improved the reliability of unit operation and and extended service life of unit.
Brief description of the drawings
Fig. 1 is embodiments of the invention structural representation;
Fig. 2 is the I part partial enlarged drawing of Fig. 1;
Fig. 3 is the structural representation of axial anti-vibration unit and anti-rotation unit;
Fig. 4 is the half sectional view of Fig. 3;
Fig. 5 is the structural representation of fluctuate hermetical ring;
Fig. 6 is the structural representation of another embodiment of the present invention.
Detailed description of the invention
As shown in Figure 1, 2, a kind of global function throttling arrangement that floats, comprises fluctuate hermetical ring 10, described inFluctuate hermetical ring 10 is sheathed on the outer wall place of revolving part 20, and fluctuate hermetical ring 10 is located in revolving part20 and fixture 30 between, between described fluctuate hermetical ring 10 inwalls and revolving part 20 outer walls form betweenGap coordinates, and the radial clearance between described fluctuate hermetical ring 10 outer walls and fixture 30 inwalls is greater than unsteadyRadial clearance between sealing ring 10 inwalls and revolving part 20 outer walls, this throttling arrangement also comprises for limitThe axial anti-string of the anti-rotation unit 40 that fluctuate hermetical ring 10 processed rotates and restriction fluctuate hermetical ring axial motionMoving cell 50.
As present invention further optimization scheme: as shown in Figure 1, on described fluctuate hermetical ring 10Close on a side end face of fixture 30 and the laminating setting of the surface of fixture 30; Described axial anti-vibration listUnit 50 be arranged on fluctuate hermetical ring 10 with respect to the fit opposite side end of end face of fixture 30,And axial anti-vibration unit 50 is affixed with described fixture 30; Described anti-rotation unit 40 is stop pin,Described anti-rotation unit 40 is arranged on axial anti-vibration unit 50, and anti-rotation unit 40 and floating sealBetween the corresponding end-faces of ring 10, form and coordinate.
Described axial anti-vibration unit 50 is established in order to limit the axial location state of fluctuate hermetical ring 10Put.
Further, for specializing the matching relationship of 10 of anti-rotation unit 40 and fluctuate hermetical rings, described inThe corresponding end coordinating with anti-rotation unit 40 on fluctuate hermetical ring 10 offers for being matedSlotted eye 11, as shown in Figure 5, has gap between described slotted eye 11 and anti-rotation unit 40, floats guaranteeingRotary packing ring 10 relatively revolving part 20 can free floating adjustment. In actual use, can float describedSlotted eye 11 on sealing ring 10 is set to blind hole, and slotted eye 11 internal diameter sizes are greater than slightly and are matedAnti-rotation unit 40 outside dimensions, certainly, realize the slotted eye 11 and anti-rotation unit 40 of above-mentioned functionsConcrete shape coordinate for multiple, repeat no longer one by one herein.
Further, as shown in Fig. 1～4, for ease of actual production, simultaneously also existing for convenience of givingEquipment is installed, and described axial anti-vibration unit 50 is banking stop, described axial anti-vibration unit 50 profilesBe circular, and a side end face laminating of axial anti-vibration unit 50 is fixed on fixture 30, described inRadially postpone to its axle center place for having and be cantilever-shaped unsteady for limiting in 50 inwall places, axial anti-vibration unitThe press strip 51 of sealing ring 10 axial string momentums, described anti-rotation unit 40 is arranged on press strip 51. Like this,Above-mentioned split-type design is conducive to actual processing on the one hand, on the other hand in practical application the present inventionTime, can be directly installing and no longer need more exchange device on existing equipment, reduce renewal of the equipment cost, fromAnd be conducive to actual applying of the present invention.
Further, the axis of anti-rotation unit 40 is perpendicular to the residing plate face of press strip 51, described press strip51 and the corresponding counterface of fluctuate hermetical ring 10 between have clearance t, limit gap hereinT=0.05mm, this gap had both avoided the seal face flutter, the gap that cause because of unit vibration to strengthenLeak, also avoided in the time that conveying contains solid particle medium, seal face enters solid because of flutterParticle and cause seal failure, meanwhile, revolving part 20 is freely relatively to have guaranteed again fluctuate hermetical ring 10Float and adjust. In addition, the radial clearance between described fluctuate hermetical ring 10 inwalls and revolving part 20 outer wallsT＝0.05～0.1mm。
Elaborate in conjunction with the course of work of Fig. 1～5 pair invention herein.
Radial clearance T=0.05～the 0.1mm of fluctuate hermetical ring 10 inwalls and revolving part 20 outer walls, by thisThe hydraulic resistance that narrow and small radial clearance T produces and realize minimizing fluid leakage, meanwhile, this narrow and smallAfter frictional resistance in gap on the buoyancy overcoming contact-making surface of liquid, owing to there is adjusting play, can ensure againThe automatic aligning of fluctuate hermetical ring 10 relative revolving parts 20, makes fluctuate hermetical ring 10 and revolving part 20Do not contact with each other wearing and tearing and the very little gap of long-term maintenance. Described fluctuate hermetical ring 10 outer walls and fixtureThe radial clearance of 30 inwalls be greater than between fluctuate hermetical ring 10 inwalls and revolving part 20 outer walls radially betweenGap, these two radial clearances have ensured the process of fluctuate hermetical ring 10 at relative revolving part 20 automatic aligningsIn have enough mobile spaces.
As shown in Figure 1, one end of fluctuate hermetical ring 10 is near higher-pressure region a, and the other end is near low-pressure area b,Its suffered pressure successively decreases to low-pressure area b along higher-pressure region a, suffered near the end face of higher-pressure region aPower be greater than near the suffered power of low-pressure area b, fluctuate hermetical ring 10 under the poor effect of pressure at two ends,The end face of its one end near fixture 30 and fixture 30 fits tightly, and makes the two ends that fineness is very highFace forms sealing surface, has played the effective sealing of convection cell; Fluctuate hermetical ring 10 is near outlet higher-pressure region aOne end be provided for limiting the axial anti-vibration unit 50 of fluctuate hermetical ring 10 axial string momentums, described inPress strip 51 on axial anti-vibration unit 50 has with the corresponding counterface of fluctuate hermetical ring 10The clearance t of 0.05mm, the existence of this gap t had both been avoided quivering because of the seal face that unit vibration causesShake, gap strengthen and leak, also avoided in the time that conveying contains solid particle medium seal faceCause seal failure because flutter enters solid particle, meanwhile, guaranteed that again fluctuate hermetical ring 10 can phaseTo revolving part 20 free floating adjustment, maintenance centering.
As shown in Figure 1, in the time of pump working, fluctuate hermetical ring 10 has along with impeller is that revolving part 20 revolvesThe trend turning, but under the restriction of anti-rotation unit 40, make fluctuate hermetical ring 10 and fixture 30 end facesOnly produce trickle Relative Floating, thereby avoided wearing and tearing and the Problem of Failure of fluctuate hermetical ring 10. Separately, and in water pump assembly running, be inevitably accompanied by vibration outward, due to axial anti-vibration unit50 existence, had both avoided the seal face flutter, the gap that cause because of unit vibration to strengthen and let outLeak, also avoided in the time that conveying contains solid particle medium, seal face enters solid particle because of flutterCause seal failure, meanwhile, guaranteed again fluctuate hermetical ring 10 revolving part 20 free floatings tune relativelyWhole, maintenance centering.
The present invention relatively said structure does multiple accommodation, is not restricted to above-described embodiment,In the time that design of the present invention is applied to as shown in Figure 6 in structure, still can rely on cover axially anti-Anti-rotation unit 40 is set on vibration unit 50 and limits fluctuate hermetical ring 10 along with rotating shaft is revolving part 20Make synchronous or rotating Vortex, thus effectively avoided wearing and tearing in the course of the work of fluctuate hermetical ring 10 andLost efficacy, increased greatly the actual life of fluctuate hermetical ring 10. Rotating shaft shown in Fig. 6 revolvesThe upper end that turns part 20 is higher-pressure region a, and lower end is low-pressure area b.
Claims (2)
1. the unsteady throttling arrangement of global function, comprises fluctuate hermetical ring (10), described fluctuate hermetical ring(10) be sheathed on the outer wall place of revolving part (20), and fluctuate hermetical ring (10) is located in revolving part (20)And between fixture (30), between described fluctuate hermetical ring (10) inwall and revolving part (20) outer wallForm matched in clearance, between described fluctuate hermetical ring (10) outer wall and fixture (30) inwall radiallyGap is greater than the radial clearance between fluctuate hermetical ring (10) inwall and revolving part (20) outer wall, its spyLevy and be: this throttling arrangement also comprises the anti-rotation unit (40) rotating for limiting fluctuate hermetical ring (10)Axial anti-vibration unit (50) with restriction fluctuate hermetical ring axial motion;
A side end face of closing on fixture (30) on described fluctuate hermetical ring (10) and fixture (30)Surface laminating arrange; Described axial anti-vibration unit (50) is arranged on fluctuate hermetical ring (10)With respect to the opposite side end of fixture (30) laminating end face, and axial anti-vibration unit (50) withDescribed fixture (30) is affixed; Described anti-rotation unit (40) is stop pin, described anti-rotation unit (40)Be arranged at axial anti-vibration unit (50) upper, and anti-rotation unit (40) and fluctuate hermetical ring (10)Between corresponding end-faces, form and coordinate;
Described axial anti-vibration unit (50) is banking stop, described axial anti-vibration unit (50) profileBe circular, and a side end face laminating of axial anti-vibration unit (50) is fixed on fixture (30);The inwall place of described axial anti-vibration unit (50) radially postpone to its axle center place have be cantilever-shaped forThe press strip (51) of restriction fluctuate hermetical ring (10) axial string momentum, described anti-rotation unit (40) arrangesOn press strip (51);
The axis of described anti-rotation unit (40) is perpendicular to the residing plate face of press strip (51), described press strip (51)And between the corresponding counterface of fluctuate hermetical ring (10), there is clearance t, described clearance t=0.05mm;
The radial clearance T=0.05 of described fluctuate hermetical ring (10) inwall and revolving part (20) outer wall～0.1mm。
2. the unsteady throttling arrangement of global function according to claim 1, is characterized in that: described floatingThe corresponding end coordinating with anti-rotation unit (40) on rotary packing ring (10) offers for describedThe slotted eye (11) that anti-rotation unit (40) matches, described slotted eye (11) and anti-rotation unit (40) itBetween be provided with gap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210575176.0A CN103047171B (en) | 2012-12-26 | 2012-12-26 | The global function throttling arrangement that floats |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210575176.0A CN103047171B (en) | 2012-12-26 | 2012-12-26 | The global function throttling arrangement that floats |
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| Publication Number | Publication Date |
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| CN103047171A CN103047171A (en) | 2013-04-17 |
| CN103047171B true CN103047171B (en) | 2016-05-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210575176.0A Active CN103047171B (en) | 2012-12-26 | 2012-12-26 | The global function throttling arrangement that floats |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107520708A (en) * | 2017-09-04 | 2017-12-29 | 刘志伟 | One kind, which is floated, perceives grinding head device |
| CN110454413A (en) * | 2019-08-29 | 2019-11-15 | 重庆美的通用制冷设备有限公司 | Compressor and air-conditioning system |
| CN110985373B (en) * | 2019-11-22 | 2022-04-19 | 中国航发西安动力控制科技有限公司 | Servo labyrinth seal structure |
| KR102473357B1 (en) * | 2021-04-23 | 2022-12-05 | 한국항공우주연구원 | Turbo Pump With Anti-Rotating Floating Ring Seal |
Citations (3)
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|---|---|---|---|---|
| CN2539855Y (en) * | 2002-04-12 | 2003-03-12 | 新疆乌苏市北方新科有限公司 | Floating ring sealing device for pump spindle sealing box bettom throttle |
| CN101178076A (en) * | 2007-11-16 | 2008-05-14 | 江苏大学 | Water pump impeller floating seal |
| CN202065225U (en) * | 2011-05-09 | 2011-12-07 | 重庆美的通用制冷设备有限公司 | Air floating comb tooth sealing mechanism for centrifugal refrigerating compressor |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8491277B2 (en) * | 2010-02-12 | 2013-07-23 | Ebara Corporation | Submersible motor pump, motor pump, and tandem mechanical seal |
| DE102010035861A1 (en) * | 2010-08-30 | 2012-03-01 | Ebm-Papst Landshut Gmbh | Seal of a turbomachine |
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2012
- 2012-12-26 CN CN201210575176.0A patent/CN103047171B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2539855Y (en) * | 2002-04-12 | 2003-03-12 | 新疆乌苏市北方新科有限公司 | Floating ring sealing device for pump spindle sealing box bettom throttle |
| CN101178076A (en) * | 2007-11-16 | 2008-05-14 | 江苏大学 | Water pump impeller floating seal |
| CN202065225U (en) * | 2011-05-09 | 2011-12-07 | 重庆美的通用制冷设备有限公司 | Air floating comb tooth sealing mechanism for centrifugal refrigerating compressor |
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| CN103047171A (en) | 2013-04-17 |
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Address after: 230031 No. 888, Changjiang West Road, high tech Zone, Hefei City, Anhui Province Patentee after: HEFEI GENERAL MACHINERY RESEARCH INSTITUTE Co.,Ltd. Address before: 230031 No. 888, Changjiang West Road, high tech Zone, Hefei City, Anhui Province Patentee before: HEFEI GENERAL MACHINERY Research Institute |
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Address after: 230031 No. 888 Changjiang West Road, Shushan District, Anhui, Hefei Patentee after: HEFEI GENERAL MACHINERY RESEARCH INSTITUTE Co.,Ltd. Address before: 230031 No. 888, Changjiang West Road, high tech Zone, Hefei City, Anhui Province Patentee before: HEFEI GENERAL MACHINERY RESEARCH INSTITUTE Co.,Ltd. |