CN103939607B - A kind of integration type shaft end sealing device - Google Patents
A kind of integration type shaft end sealing device Download PDFInfo
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- CN103939607B CN103939607B CN201310022931.7A CN201310022931A CN103939607B CN 103939607 B CN103939607 B CN 103939607B CN 201310022931 A CN201310022931 A CN 201310022931A CN 103939607 B CN103939607 B CN 103939607B
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- ring
- floating
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- gland
- stuffing
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- 238000007789 sealing Methods 0.000 title claims abstract description 75
- 230000010354 integration Effects 0.000 title claims abstract description 10
- 210000004907 gland Anatomy 0.000 claims abstract description 33
- 125000006850 spacer group Chemical group 0.000 claims abstract description 32
- 239000000945 filler Substances 0.000 claims abstract description 19
- 238000012856 packing Methods 0.000 claims abstract description 14
- 238000007667 floating Methods 0.000 claims description 50
- 125000002837 carbocyclic group Chemical group 0.000 claims description 22
- 238000002347 injection Methods 0.000 claims description 8
- 239000007924 injection Substances 0.000 claims description 8
- 238000000926 separation method Methods 0.000 claims description 2
- 238000012423 maintenance Methods 0.000 abstract description 5
- 230000008901 benefit Effects 0.000 abstract description 4
- 239000007788 liquid Substances 0.000 description 5
- 239000007787 solid Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 239000003208 petroleum Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 230000006837 decompression Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000013036 cure process Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000013386 optimize process Methods 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- Sealing Devices (AREA)
Abstract
The present invention relates to a kind of integration type shaft end sealing device, mainly it is made up of one-level floating-ring seal, two grades of packing seal storehouses being provided with sealing medium distribution ring, one-level floating-ring seal structure is formed by organizing floating-ring seal more, and former groups are symmetrically installed back-to-back with latter several groups, are individually positioned in the both sides of L-type spacer ring；Two grades of packing seal storehouses being provided with sealing medium distribution ring are made up of hard spacer ring, filler, sealing medium distribution ring, gland and stuffing-box.It is mainly used in mesolow type rotary shaft equipment shaft end seal；The integrated form combined sealing structure of present invention design can reach type rotary shaft device interior danger medium zero leakage purpose, has life-span length, seals the advantages such as reliable, maintenance is simple, maintenance is convenient and pollution-free.
Description
Technical field
The present invention relates to a kind of rotating shaft equipment axle head integrated form combined sealing structure, being mainly used in petroleum chemical industry in equipment shell medium is gas-liquid or the shaft end seal of liquid-solid mixed phase mesolow type rotary shaft equipment.
Background technology
In existing petroleum chemical industry, in equipment shell, medium is that the shaft end seal of gas-liquid or liquid-solid mixed phase mesolow type rotary shaft equipment is mainly applied floating-ring seal, mechanical seal etc. and sealed structure；The existing sealing structure being similar to this combination sealing is as follows:
(1) combined floating ring sealing device (patent No. is 00132605.8) and a kind of float-ring sealing device (patent No. is CN1334408A), this technology is based primarily upon floating-ring seal and its limitation is optimized process；Combined floating ring sealing device (patent No. is 00132605.8) mainly improves the float-ring sealing device adaptability to oil gas pressure reduction, expands operational envelope, and effectively reduces the internal leakage of Seal Oil；Another kind of float-ring sealing device (patent No. is CN1334408A) has the endoporus of floating ring in connection and the passage of outer wall in the ring wall surface of interior floating ring, thus the temperature of floating ring in effectively reducing, it is ensured that the safe operation of sealing device.This type seals structure and is primarily adapted for use in the turbine of the industries such as petrochemical industry, the shaft end seal of the fluid machineries such as centrifugal compressor, its technical limitation is in that the minor leakage existing for floating-ring seal yet suffers from, realizing enclosure interior danger medium zero leakage purpose equipment for needs, this type seals structure and is difficulty with operation steady in a long-term.
(2) a kind of rotation shaft combined sealing device (patent No. is CN101799075A), this technology belongs to mechanical seal field, being primarily adapted for use in the liquid seal in the fields such as military project, boats and ships and navigation, it solves the technical problem that it is under the harsh sealing property such as low temperature, pollution-free, No leakage requires, liquid is sealed；
Its technical limitation is in that this type seals structure and belongs to mechanical seal field, and for liquid-solid mixed phase medium, the abrasion of its inner seal member is very fast, causes the later stage to be run and maintenance cost is higher.
Summary of the invention
In view of above-mentioned existing sealing structure limitation in industry park plan process, it is an object of the invention to provide a kind of integration type shaft end sealing device.Being primarily adapted for use in petroleum chemical industry in equipment shell medium is gas-liquid or the shaft end combined seal of liquid-solid mixed phase mesolow type rotary shaft equipment.
The technical scheme is that
A kind of integration type shaft end sealing device, is mainly made up of one-level floating-ring seal, two grades of packing seal storehouses being provided with sealing medium distribution ring, it is characterized in that:
One-level floating-ring seal structure is formed by organizing floating-ring seal more, and former groups are symmetrically installed back-to-back with latter several groups, are individually positioned in the both sides of L-type spacer ring；Being sequentially loaded into floating ring cavity, be assembled integrally by floating ring gland is spacing, then be arranged on axle sleeve, sealing medium injection hose II enters L-type spacer ring by floating ring cavity；Often group floating-ring seal is by carbocyclic ring, L-type spacer ring, spacing ring, spline pin, and axle spring forms；O RunddichtringO I embeds floating ring chamber outer surface, and carbocyclic ring is split-type, and its inwall is provided with semi-circular grooves, and cylindrical circumference extension spring banding is integrated, and carbon ring seal end face is against axle spring, and close to L-type spacer ring, spline pin occupy between carbocyclic ring；Spacing ring occupy between carbocyclic ring and L-type spacer ring；Sleeve lining and rotating shaft are equipped with O RunddichtringO II；
Two grades of packing seal storehouses being provided with sealing medium distribution ring are made up of hard spacer ring, filler, sealing medium distribution ring, gland and stuffing-box；Equipped with gasket seal between ring gland and floating ring cavity, and by the fixing screw fastening of the fixing screw of floating ring cavity and floating ring gland；Gland, hard spacer ring, filler, sealing medium distribution ring it is furnished with outside axle sleeve, filler separation sealing medium distribution ring both sides, hard spacer ring, stuffing-box and gland occupy again the both sides of filler and sealing medium distribution ring respectively, stuffing-box is placed in outside gland, hard spacer ring, filler, sealing medium distribution ring, is combined with floating ring cavity and floating ring gland；Gland and stuffing-box are by the fixing bolt fastening of gland, and stuffing-box and floating ring cavity are by the fixing bolt fastening of stuffing-box, and sealing medium injection hose I enters sealing medium distribution ring by stuffing-box.
The fixing seat inwall of above-mentioned floating ring cavity and rotating shaft equipment center concentricity≤0.04mm,
Above-mentioned carbocyclic ring inwall is equipped with the semi-circular grooves of R=1.
Above-mentioned seal gas pressure is higher than operating pressure in rotating shaft equipment shell, its pressure differential≤0.04～0.06Mpa.
Above-mentioned stuffing-box inwall and rotating shaft equipment center concentricity≤0.04mm.
Advantages of the present invention and generation provide the benefit that:
1, the present invention relates to by one-level floating-ring seal, two grades be provided with the integrated combined sealing structure of the packing seal storehouse of sealing medium distribution ring, axle sleeve and O RunddichtringO and can reach type rotary shaft device interior danger medium zero leakage purpose, and this device has life-span length, seals the advantages such as reliable, maintenance is simple, maintenance is convenient and pollution-free, overcome existing sealing structure limitation in use.
2, the invention belongs to the integrated type multi-stage combination sealing of contact seal and non-contacting seal, the operating mode sealing gas and rotary shaft equipment sealing medium of coupling adapts, it is achieved one-level floating-ring seal, two grades of packing seal storehouses being provided with sealing medium distribution ring seal.
3, fixing seat seal face and rotating shaft equipment center perpendicularity≤0.04mm, common guarantee one-level floating-ring seal, two grades to seal pressure between packing seal and rotating shaft uniform, it may be achieved effective sealing of danger medium in rotating shaft equipment shell.
4, boss surfaces has carried out chromium plating cure process, its surface roughness≤0.8 μm, it is ensured that axle sleeve and rotating shaft apparatus casing overall precision make up, it is achieved type rotary shaft device interior danger medium zero leakage purpose.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention.
Fig. 2 is one-level floating-ring seal structural representation.
Fig. 3 is two grades is provided with the packing seal chamber structure schematic diagram of sealing medium distribution ring.
Description of reference numerals is as follows:
1-gland 2-stuffing-box 3-sealing medium injection hose I
4-hard spacer ring 5-axle spring 6-sealing medium injection hose II
7-floating ring cavity 8-floating ring cavity fixes seat 9-O RunddichtringO I10-spacing ring 11-axle sleeve 12-spline pin 13-L type spacer ring 14-carbocyclic ring 15-extension spring
The fixing bolt 21-filler of the fixing screw 18-gasket seal 19-floating ring gland 20-stuffing-box of the fixing screw 17-floating ring gland of 16-floating ring cavity
22-sealing medium distribution ring 23-gland fixes bolt 24-O RunddichtringO II.
Detailed description of the invention
Below, in conjunction with accompanying drawing, technical scheme is described further again:
A kind of integration type shaft end sealing device, is mainly made up of one-level floating-ring seal, two grades of packing seal storehouses being provided with sealing medium distribution ring；
One-level floating-ring seal is made up of 4 groups of floating-ring seals of combination type, and first 4 groups are back-to-back symmetrically installed with latter 4 groups, are individually positioned in the both sides of L-type spacer ring 13；And be assembled integrally by floating ring gland 19 and floating ring cavity 7, become packaging type structure.Then, then being arranged on case hardened and the axle sleeve 11 of fineness process, assembly is integrated form rotation shaft combined sealing device.Often group floating-ring seal is by carbocyclic ring 14, L-type spacer ring 13, spacing ring 10, spline pin 12, and axle spring 5 forms；O RunddichtringO I9 embeds floating ring cavity 7 outer surface, and carbocyclic ring 14 is split-type, and its cylindrical circumference extension spring 15 banding is integrated, and carbocyclic ring 14 inwall is equipped with the semi-circular grooves of R=1, seals the runner of gas when this groove is mainly as carbocyclic ring 14 radial floating.Seal gas pressure is higher than operating pressure in rotating shaft equipment shell, its pressure differential≤0.04～0.06Mpa, the convenient gas that seals is flowed to carbocyclic ring 14 inwall gap larger side (pressure is relatively low) by carbocyclic ring 14 inwall gap smaller side (pressure is higher), thus it is uniform to realize sealing gas pressure distribution between carbocyclic ring 14 inwall and axle sleeve 11 space.The fixing seat 8 of floating ring cavity is connected as one by welding or threaded and rotating shaft equipment end cap, carries out polish together with rotating shaft apparatus casing entirety, it is ensured that fixing seat 8 inwall of floating ring cavity and rotating shaft center's concentricity≤0.04mm.Carbocyclic ring 14 does not rotate at L-type spacer ring 13, and radial floating ranges for 1mm, it is possible to compensates rotating shaft and relative to the fixing seat 8 inwall nonconcentricity of floating ring cavity and radially wobbles, has self-centering function；Carbocyclic ring 14 seal face is against axle spring 5, and by sealing gas on L-type spacer ring 13 back side, spline pin 12 occupy between carbocyclic ring 14；Spacing ring 10 occupy between carbocyclic ring 14 and L-type spacer ring 13, and spline pin 12 occupy between carbocyclic ring 14；Axle sleeve 11 inwall and rotating shaft are equipped with O RunddichtringO II 24, seal gas and enter floating ring cavity 7 by L-type spacer ring 13 by sealing medium injection hose II 6, respectively enter front 4 groups with rear 4 groups of floating rings close, after entrance, type rotary shaft device interior danger medium is carried out isolation resistance envelope by the gas of 4 groups, enter the gas of first 4 groups after multilevel decompression, two grades of packing seals realize final sealing.
Two grades of packing seal storehouses being provided with sealing medium distribution ring are made up of hard spacer ring 4, filler 21, sealing medium distribution ring 22, gland 1 and stuffing-box 2.Stuffing-box 2 inwall and rotating shaft equipment center concentricity≤0.04mm.Equipped with gasket seal 18 between floating ring gland 19 and floating ring cavity 7, and fastened with the fixing screw 17 of floating ring gland by the fixing screw 16 of floating ring cavity；Gland 1, hard spacer ring 4, filler 21, sealing medium distribution ring 22 it is furnished with outside axle sleeve 11, filler 21 is lived apart sealing medium distribution ring 22 both sides, hard spacer ring 4, stuffing-box 2 and gland 1 occupy again the both sides of filler 21 and sealing medium distribution ring 2 respectively, stuffing-box 2 is placed in outside gland 1, hard spacer ring 4, filler 21, sealing medium distribution ring 22, is combined with floating ring cavity 7 and floating ring gland 19；Gland 1 is fastened by the fixing bolt 23 of gland with stuffing-box 2, stuffing-box 2 is fastened by the fixing bolt 20 of stuffing-box with floating ring cavity 7, sealing medium injection hose I3 enters sealing medium distribution ring 22 by stuffing-box 2, the 4 groups of fillers being distributed in before and after sealing medium distribution ring 21 are applied pressure, after making operating, the filler compression swelling all the time of abrasion is in the packing cavity that stuffing-box 2 inwall and axle sleeve 11 are formed, the part released by one-level floating-ring seal structure after multilevel decompression is sealed gas, and undertaken final effectively sealing by sealing a small amount of medium of taking out of of gas, to realize type rotary shaft device interior danger medium zero leakage purpose.
Claims (4)
1. an integration type shaft end sealing device, is mainly made up of one-level floating-ring seal, two grades of packing seal storehouses being provided with sealing medium distribution ring, it is characterized in that:
One-level floating-ring seal structure is formed by organizing floating-ring seal more, and former groups are symmetrically installed back-to-back with latter several groups, are individually positioned in the both sides of L-type spacer ring (13)；Being sequentially loaded into floating ring cavity (7), be assembled integrally by floating ring gland (19) is spacing, then be arranged on axle sleeve (11), sealing medium injection hose II (6) enters L-type spacer ring (13) by floating ring cavity (7)；Often group floating-ring seal is by carbocyclic ring (14), L-type spacer ring (13), spacing ring (10), spline pin (12), and axle spring (5) forms；O RunddichtringO I(9) embed floating ring cavity (7) outer surface, carbocyclic ring (14) is split-type, its inwall is provided with semi-circular grooves, cylindrical circumference extension spring (15) banding is integrated, carbocyclic ring (14) seal face is against axle spring (5), close to L-type spacer ring (13), spline pin (12) occupy between carbocyclic ring (14)；Spacing ring (10) occupy between carbocyclic ring (14) and L-type spacer ring (13)；Axle sleeve (11) inwall and rotating shaft are equipped with O RunddichtringO II (24)；
Two grades of packing seal storehouses being provided with sealing medium distribution ring are made up of hard spacer ring (4), filler (21), sealing medium distribution ring (22), gland (1) and stuffing-box (2)；Equipped with gasket seal (18) between floating ring gland (19) and floating ring cavity (7), and by fixing screw (17) fastening of the fixing screw (16) of floating ring cavity and floating ring gland；Axle sleeve (11) outside is furnished with gland (1), hard spacer ring (4), filler (21), sealing medium distribution ring (22), filler (21) separation sealing medium distribution ring (22) both sides, hard spacer ring (4), stuffing-box (2) and gland (1) occupy again filler (21) and the both sides of sealing medium distribution ring (22) respectively, stuffing-box (2) is placed in gland (1), hard spacer ring (4), filler (21), sealing medium distribution ring (22) outside, combines with floating ring cavity (7) and floating ring gland (19)；Gland (1) and stuffing-box (2) are by fixing bolt (23) fastening of gland, stuffing-box (2) and floating ring cavity (7) are by fixing bolt (20) fastening of stuffing-box, sealing medium injection hose I(3) enter sealing medium distribution ring (22) by stuffing-box (2).
2. a kind of integration type shaft end sealing device according to claim 1, is characterized in that: floating ring cavity fixes seat (8) inwall and rotating shaft equipment center concentricity≤0.04mm.
3. a kind of integration type shaft end sealing device according to claim 1, is characterized in that: seal gas pressure is higher than operating pressure in rotating shaft equipment shell, and its pressure differential is 0.04～0.06Mpa.
4. a kind of integration type shaft end sealing device according to claim 1, is characterized in that: stuffing-box (2) inwall and rotating shaft equipment center concentricity≤0.04mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310022931.7A CN103939607B (en) | 2013-01-22 | 2013-01-22 | A kind of integration type shaft end sealing device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310022931.7A CN103939607B (en) | 2013-01-22 | 2013-01-22 | A kind of integration type shaft end sealing device |
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| Publication Number | Publication Date |
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| CN103939607A CN103939607A (en) | 2014-07-23 |
| CN103939607B true CN103939607B (en) | 2016-06-29 |
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| CN201310022931.7A Active CN103939607B (en) | 2013-01-22 | 2013-01-22 | A kind of integration type shaft end sealing device |
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| CN106122078A (en) * | 2016-08-30 | 2016-11-16 | 湖北双剑鼓风机股份有限公司 | The asymmetric carbon ring seal device of card slot type for centrifugal blower |
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| CN110513485A (en) * | 2018-05-21 | 2019-11-29 | 天华化工机械及自动化研究设计院有限公司 | Bellows type sealing structure of multi-purpose continuous drying equipment |
| CN111006018A (en) * | 2020-01-02 | 2020-04-14 | 成都德科密封件有限公司 | Carbon ring sealing structure and assembling method thereof |
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| CN2373638Y (en) * | 1999-04-10 | 2000-04-12 | 符世朝 | Floating shaft seal |
| CN2471985Y (en) * | 2000-11-16 | 2002-01-16 | 王玉明 | Assembled suspended sealer |
| CN2869457Y (en) * | 2006-02-15 | 2007-02-14 | 何建东 | Float sealing ring |
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| CN201288295Y (en) * | 2008-10-31 | 2009-08-12 | 镇江华晨华通路面机械有限公司（中外合资） | Sealing device for axle end of agitating tank |
| CN201526675U (en) * | 2009-10-27 | 2010-07-14 | 天津赛瑞机器设备有限公司 | Novel dynamic sealing device for gas |
| CN202012501U (en) * | 2010-12-15 | 2011-10-19 | 南通大通宝富风机有限公司 | Combined type shaft end seal |
| CN202402644U (en) * | 2011-12-31 | 2012-08-29 | 中国燃气涡轮研究院 | Floating ring sealing device |
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2013
- 2013-01-22 CN CN201310022931.7A patent/CN103939607B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5643026A (en) * | 1994-09-24 | 1997-07-01 | Blohm + Voss Holding Ag | Safety device for seal systems for propeller shafts on ships |
| CN2373638Y (en) * | 1999-04-10 | 2000-04-12 | 符世朝 | Floating shaft seal |
| CN2471985Y (en) * | 2000-11-16 | 2002-01-16 | 王玉明 | Assembled suspended sealer |
| CN2869457Y (en) * | 2006-02-15 | 2007-02-14 | 何建东 | Float sealing ring |
| CN201071936Y (en) * | 2007-07-04 | 2008-06-11 | 何全波 | Thread floating sealing ring |
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| CN103939607A (en) | 2014-07-23 |
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