CN103939607A - Integrated shaft end sealing device - Google Patents
Integrated shaft end sealing device Download PDFInfo
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- CN103939607A CN103939607A CN201310022931.7A CN201310022931A CN103939607A CN 103939607 A CN103939607 A CN 103939607A CN 201310022931 A CN201310022931 A CN 201310022931A CN 103939607 A CN103939607 A CN 103939607A
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- ring
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Abstract
The invention relates to an integrated shaft end sealing device which is mainly composed of a primary floating ring sealing structure and a secondary filler sealing cabinet. The secondary filler sealing cabinet is provided with a sealing medium distributing ring. The primary floating ring sealing structure is composed of a plurality of groups of floating ring seals, wherein the several former groups of float ring seals and the several later groups of float ring seals are symmetrically arranged back to back and are respectively arranged on the two sides of an L-shaped partition ring. The secondary filler sealing cabinet provided with the sealing medium distributing ring is composed of a hard partition ring, fillers, the sealing medium distributing ring, a filler pressing cover and a filler box. The integrated shaft end sealing device is mainly used for sealing shaft ends of middle-low-pressure rotating shaft type equipment. The integrated shaft end sealing device can achieve an integrated combined sealing structure, can achieve the purpose of zero leakage of dangerous media in the rotating shaft type equipment and has the advantages of being long in service life, reliable in sealing, simple to maintain, convenient to overhaul, free of pollution and the like.
Description
Technical field
The present invention relates to a kind of running shaft equipment axle head integrated form combined sealing structure, be mainly used in the shaft end seal that medium in equipment shell in petroleum chemical industry is gas-liquid or liquid-solid mixing phase mesolow type rotary shaft equipment.
Background technique
The shaft end seal that in existing petroleum chemical industry, the interior medium of equipment shell is gas-liquid or liquid-solid mixing phase mesolow type rotary shaft equipment is mainly applied the sealing configuration such as floating-ring seal, mechanical seal; The existing sealing configuration that is similar to this combination seal 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 mainly optimized processing based on floating-ring seal to its narrow limitation; Combined floating ring sealing device (patent No. is 00132605.8) mainly improves the adaptability of float-ring sealing device to oil gas pressure reduction, expands safe operation scope, and effectively reduces the internal leakage of sealing oil; Another kind of float-ring sealing device (patent No. is CN1334408A) has the endoporus of floating ring and the passage of outer wall in connection in the ring wall surface of interior floating ring, thereby the temperature of floating ring in effectively reducing ensures the safe operation of seal arrangement.This type sealing configuration is mainly applicable to 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 that the existing slight leakage of floating-ring seal still exists, realize enclosure interior danger medium zero leakage object equipment for needs, this type sealing configuration is difficult to realize 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, mainly be applicable to the hydraulic seal in the fields such as military project, boats and ships and navigation, the technical problem of its solution be low temperature, pollution-free, liquid is sealed under requiring without the harsh sealability such as leaking;
Its technical limitation is that this type sealing configuration belongs to mechanical seal field, and for liquid-solid mixing phase medium, its inner sealing component wear is very fast, causes later stage operation and maintenance cost higher.
Summary of the invention
In view of the narrow limitation of above-mentioned existing sealing configuration in industrial running, the object of the present invention is to provide a kind of integration type shaft end sealing device.Mainly be applicable to the shaft end combined seal that medium in equipment shell in petroleum chemical industry is gas-liquid or liquid-solid mixing phase mesolow type rotary shaft equipment.
Technological scheme of the present invention is:
A kind of integration type shaft end sealing device, is mainly provided with sealing medium by one-level floating-ring seal, secondary and distributes the packing seal storehouse of ring to form, and it is characterized in that:
One-level floating-ring seal structure forms by organizing floating-ring seal more, former groups with rear several groups of symmetrical installations back-to-back, be placed on respectively the both sides of L-type spacer ring; Pack successively floating ring cavity into, by the spacing one that is assembled into of floating ring gland, then be arranged on axle sleeve, sealing medium injection hose II enters L-type spacer ring by floating ring cavity; Every group of floating-ring seal be by carbocyclic ring, L-type spacer ring, limited ring, spline pin, axle spring composition; O RunddichtringO I embeds floating ring chamber outer surface, and carbocyclic ring is split, and its inwall is provided with semi-circular grooves, and cylindrical circumference is integrated with extension spring banding, and carbon ring seal end face, near axle spring, approaches L-type spacer ring, and spline pin occupy between carbocyclic ring; Limited ring occupy between carbocyclic ring and L-type spacer ring; Sleeve lining and running shaft are equipped with O RunddichtringO II;
Secondary is provided with sealing medium and distributes the packing seal storehouse of ring to distribute ring, Gland and stuffing box to form by hard spacer ring, filler, sealing medium; Between ring gland and floating ring cavity, gasket seal is housed, and fastening by floating ring cavity set screw and floating ring gland set screw; Axle sleeve outside is furnished with Gland, hard spacer ring, filler, sealing medium distribution ring, filler separation sealing medium distributes ring both sides, hard spacer ring, stuffing box and Gland occupy respectively again filler and sealing medium distributes the both sides of encircling, stuffing box is placed in Gland, hard spacer ring, filler, sealing medium distribution ring outside, is combined with floating ring cavity and floating ring gland; Gland and stuffing box are fastening by Gland fixing bolt, and stuffing box and floating ring cavity are fastening by stuffing box fixing bolt, and sealing medium injection hose I enters sealing medium by stuffing box and distributes ring.
Above-mentioned floating ring cavity fixed base inwall and running 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 working pressure in running shaft equipment shell, its pressure difference≤0.04～0.06Mpa.
Above-mentioned stuffing box inwall and running shaft equipment center concentricity≤0.04mm.
The beneficial effect of advantage of the present invention and generation is:
1, the present invention relates to by one-level floating-ring seal, secondary be provided with sealing medium distribute ring the integrated combined sealing structure of packing seal storehouse, axle sleeve and O RunddichtringO can reach type rotary shaft device interior danger medium zero leakage object, and the advantages such as the life-span is long, sealing is reliable, safeguard simply, maintenance is convenient and pollution-free that this device has, have overcome existing sealing configuration narrow limitation in use.
2, the invention belongs to the integrated type multi-stage combination seal of contact seal and noncontact seal, sealing gas and the operating mode of revolution axis type equipment sealing medium of coupling adapt, and realize one-level floating-ring seal, secondary is provided with sealing medium and distributes the packing seal storehouse of ring to seal.
3, fixed base seal face and running shaft equipment center perpendicularity≤0.04mm, between the floating-ring seal of common guarantee one-level, secondary packing seal and running shaft, sealing load is even, can realize the effective sealing of danger medium in running shaft equipment shell.
4, chromium plating cure process has been carried out on axle sleeve surface, and its surface roughness≤0.8 μ m ensures that axle sleeve and running shaft apparatus casing overall precision make up, realize type rotary shaft device interior danger medium zero leakage object.
Brief description of the drawings
Fig. 1 is structural representation of the present invention.
Fig. 2 is one-level floating-ring seal structural representation.
Fig. 3 is that secondary is provided with the packing seal chamber structure schematic diagram that sealing medium distributes 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 fixed base 9-O RunddichtringO I 10-limited ring 11-axle sleeve 12-spline pin 13-L-type spacer ring 14-carbocyclic ring 15-extension spring
16-floating ring cavity set screw 17-floating ring gland set screw 18-gasket seal 19-floating ring gland 20-stuffing box fixing bolt 21-filler
22-sealing medium distributes ring 23-Gland fixing bolt 24-O RunddichtringO II.
Embodiment
Below, by reference to the accompanying drawings technological scheme of the present invention is described further again:
A kind of integration type shaft end sealing device, is mainly provided with sealing medium by one-level floating-ring seal, secondary and distributes the packing seal storehouse of ring to form;
One-level floating-ring seal is made up of 4 groups of floating-ring seals of combined type, front 4 groups with rear 4 groups of symmetrical installations back-to-back, be placed on respectively the both sides of L-type spacer ring 13; And be assembled into one by floating ring gland 19 and floating ring cavity 7, become unit loading type structure.Then, then be arranged on the axle sleeve 11 of surface sclerosis and degree of finish processing, assembly is integrated form rotation shaft combined sealing device.Every group of floating-ring seal be by carbocyclic ring 14, L-type spacer ring 13, and limited ring 10, spline pin 12, axle spring 5 forms; O RunddichtringO I9 embeds floating ring cavity 7 outer surfaces, and carbocyclic ring 14 is split, and its cylindrical circumference is integrated with extension spring 15 bandings, and carbocyclic ring 14 inwalls are equipped with the semi-circular grooves of R=1, the runner of this groove sealing gas during mainly as carbocyclic ring 14 radial floating.Seal gas pressure is higher than working pressure in running shaft equipment shell, its pressure difference≤0.04～0.06Mpa, facilitate sealing gas to flow to carbocyclic ring 14 inwall gap larger sides (pressure is lower) by carbocyclic ring 14 inwall gaps smaller side (pressure is higher), thereby it is even to realize sealing gas pressure distribution between carbocyclic ring 14 inwalls and axle sleeve 11 spaces.Floating ring cavity fixed base 8 connects as one with the end cap of running shaft equipment by welding or being threaded, and carries out fine finishing together with running shaft apparatus casing entirety, ensures floating ring cavity fixed base 8 inwalls and the concentricity≤0.04mm of rotating shaft center.Carbocyclic ring 14 does not rotate at L-type spacer ring 13, and radial floating scope is 1mm, can compensate running shaft with respect to floating ring cavity fixed base 8 inwall nonconcentricity and radially wobble, and has self contering function; Carbocyclic ring 14 seal faces are near axle spring 5, and by sealing gas, near on L-type spacer ring 13 back sides, spline pin 12 occupy 14 of carbocyclic rings; Limited ring 10 occupy between carbocyclic ring 14 and L-type spacer ring 13, and spline pin 12 occupy 14 of carbocyclic rings; Axle sleeve 11 inwalls and running shaft are equipped with O RunddichtringO II 24, sealing gas enters floating ring cavity 7 by L-type spacer ring 13 by sealing medium injection hose II 6, enter respectively front 4 groups with rear 4 groups of floating rings close, after entering, the gas of 4 groups is isolated resistance envelope to type rotary shaft device interior danger medium, enter the gas of first 4 groups after multilevel decompression, realize final sealing by secondary packing seal.
Secondary is provided with sealing medium and distributes the packing seal storehouse of ring to distribute ring 22, Gland 1 and stuffing box 2 to form by hard spacer ring 4, filler 21, sealing medium.Stuffing box 2 inwalls and running shaft equipment center concentricity≤0.04mm.Between floating ring gland 19 and floating ring cavity 7, gasket seal 18 is housed, and fastening by floating ring cavity set screw 16 and floating ring gland set screw 17, axle sleeve 11 outsides are furnished with Gland 1, hard spacer ring 4, filler 21, sealing medium distribution ring 22, filler 21 live apart sealing medium distribute ring 22 both sides, hard spacer ring 4, stuffing box 2 occupy respectively again filler 21 with Gland 1 and sealing medium distributes the both sides of encircling 2, stuffing box 2 is placed in Gland 1, hard spacer ring 4, filler 21, sealing medium distribution ring 22 outsides, with floating ring cavity 7 and 19 combinations of floating ring gland, Gland 1 is fastening by Gland fixing bolt 23 with stuffing box 2, stuffing box 2 is fastening by stuffing box fixing bolt 20 with floating ring cavity 7, sealing medium injection hose I 3 enters sealing medium by stuffing box 2 and distributes ring 22, distribute 4 groups of fillers of ring 21 front and back to exert pressure to being distributed in sealing medium, the filler compressive strain swelling all the time that makes after turning round wearing and tearing is in the packing cavity that stuffing box 2 inwalls and axle sleeve 11 form, to the part sealing gas being released by one-level floating-ring seal structure after multilevel decompression, and a small amount of medium of being taken out of by sealing gas carries out final effective sealing, to realize type rotary shaft device interior danger medium zero leakage object.
Claims (5)
1. an integration type shaft end sealing device, is mainly provided with sealing medium by one-level floating-ring seal, secondary and distributes the packing seal storehouse of ring to form, and it is characterized in that:
One-level floating-ring seal structure forms by organizing floating-ring seal more, former groups with rear several groups of symmetrical installations back-to-back, be placed on respectively the both sides of L-type spacer ring (13); Pack successively floating ring cavity (7) into, by the spacing one that is assembled into of floating ring gland (19), then it is upper to be arranged on axle sleeve (11), and sealing medium injection hose II (6) enters L-type spacer ring (13) by floating ring cavity (7); Every group of floating-ring seal be by carbocyclic ring (14), L-type spacer ring (13), limited ring (10), spline pin (12), axle spring (5) composition; O RunddichtringO I(9) embedding floating ring cavity (7) outer surface, carbocyclic ring (14) is split, its inwall is provided with semi-circular grooves, cylindrical extension spring for circumference (15) banding is integrated, carbocyclic ring (14) seal face is near axle spring (5), approach L-type spacer ring (13), spline pin (12) occupy between carbocyclic ring (14); Limited ring (10) occupy between carbocyclic ring (14) and L-type spacer ring (13); Axle sleeve (11) inwall and running shaft are equipped with O RunddichtringO II (24);
Secondary is provided with sealing medium and distributes the packing seal storehouse of ring to distribute ring (22), Gland (1) and stuffing box (2) to form by hard spacer ring (4), filler (21), sealing medium; Between ring gland (19) and floating ring cavity (7), gasket seal (18) is housed, and fastening by floating ring cavity set screw (16) and floating ring gland set screw (17); 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 distributes ring (22) both sides, hard spacer ring (4), stuffing box (2) occupy respectively again filler (21) with Gland (1) and sealing medium distributes the both sides of encircling (22), stuffing box (2) is placed in Gland (1), hard spacer ring (4), filler (21), sealing medium distribution ring (22) outside, with floating ring cavity (7) and floating ring gland (19) combination; Gland (1) is fastening by Gland fixing bolt (23) with stuffing box (2), stuffing box (2) is fastening by stuffing box fixing bolt (20) with floating ring cavity (7), 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, its feature floating ring cavity fixed base (8) inwall and running shaft equipment center concentricity≤0.04mm.
3. a kind of integration type shaft end sealing device according to claim 1, is characterized in that: every group of carbocyclic ring (14) inwall is equipped with the semi-circular grooves of R=1.
4. a kind of integration type shaft end sealing device according to claim 1, is characterized in that: seal gas pressure is higher than working pressure in running shaft equipment shell, its pressure difference≤0.04～0.06Mpa.
5. a kind of integration type shaft end sealing device according to claim 1, is characterized in that: stuffing box (2) inwall and running 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 |
Applications Claiming Priority (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 |
Publications (2)
| Publication Number | Publication Date |
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| CN103939607A true CN103939607A (en) | 2014-07-23 |
| CN103939607B CN103939607B (en) | 2016-06-29 |
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| Application Number | Title | Priority Date | Filing Date |
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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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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104330225A (en) * | 2014-11-20 | 2015-02-04 | 苏州宝骅机械技术有限公司 | Leakage detection device for sealing filler |
| CN105042078A (en) * | 2015-07-28 | 2015-11-11 | 南通艾迈特机械有限公司 | High-temperature-resistant and high-pressure-resistant shaft sealing device |
| CN105134955A (en) * | 2015-09-17 | 2015-12-09 | 浙江长城减速机有限公司 | Kettle packing sealing device with sealing cavity |
| CN105134952A (en) * | 2015-07-29 | 2015-12-09 | 贵州天福化工有限责任公司 | Rotating shaft filler leakage online processing method |
| 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 |
| CN108119354A (en) * | 2018-02-26 | 2018-06-05 | 克拉玛依胜利高原机械有限公司 | Glue injection type plunger pump gland packing box |
| 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 | A kind of bellows sealing structure of revolving drum of multipurpose continuous drying equipment |
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| CN2471985Y (en) * | 2000-11-16 | 2002-01-16 | 王玉明 | Assembled suspended sealer |
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| 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 |
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| 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 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104330225A (en) * | 2014-11-20 | 2015-02-04 | 苏州宝骅机械技术有限公司 | Leakage detection device for sealing filler |
| CN104330225B (en) * | 2014-11-20 | 2017-01-11 | 苏州宝骅机械技术有限公司 | Leakage detection device for sealing filler |
| CN105042078A (en) * | 2015-07-28 | 2015-11-11 | 南通艾迈特机械有限公司 | High-temperature-resistant and high-pressure-resistant shaft sealing device |
| CN105134952A (en) * | 2015-07-29 | 2015-12-09 | 贵州天福化工有限责任公司 | Rotating shaft filler leakage online processing method |
| CN105134955A (en) * | 2015-09-17 | 2015-12-09 | 浙江长城减速机有限公司 | Kettle packing sealing device with sealing cavity |
| 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 |
| CN108119354A (en) * | 2018-02-26 | 2018-06-05 | 克拉玛依胜利高原机械有限公司 | Glue injection type plunger pump gland packing box |
| 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 | A kind of bellows sealing structure of revolving drum of multipurpose continuous drying equipment |
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| CN103939607B (en) | 2016-06-29 |
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