CN104514885A - Bellows mechanical seal applicable to crystallization work condition - Google Patents
Bellows mechanical seal applicable to crystallization work condition Download PDFInfo
- Publication number
- CN104514885A CN104514885A CN201410822023.0A CN201410822023A CN104514885A CN 104514885 A CN104514885 A CN 104514885A CN 201410822023 A CN201410822023 A CN 201410822023A CN 104514885 A CN104514885 A CN 104514885A
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- CN
- China
- Prior art keywords
- seal
- mechanical seal
- ring
- applicable
- sealing
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/08—Sealings
- F04D29/10—Shaft sealings
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mechanical Sealing (AREA)
Abstract
The invention discloses a bellows mechanical seal applicable to crystallization work condition. The mechanical seal comprises a static ring, welding metal bellows, a sealing cavity and a sealing end cover. The static ring and the welding metal bellows sequentially sleeve a shaft sleeve, the sealing cavity is sleeved by the static ring, the sealing end cover is sleeved by the shaft sleeve and connected with the sealing cavity, a sealing cavity is formed in between, and a steam inlet and a steam outlet are arranged in the sealing cavity. The mechanical seal has the advantages of adapting to high temperature work conditions, being good in sealing performance and heat insulation performance, ensuring that the sealing cavity is in the high temperature state, effectively preventing sealing failure caused by the fact that a medium is leaked and crystallized nearby the end face of the mechanical seal and being convenient to assemble and disassemble due to the integrated design.
Description
Technical field
The present invention relates to mechanical seal field, be specifically related to a kind of bellows mechanical seal being applicable to crystallization operating mode.
Background technique
At the scene in practical application, its crystallization point temperature of some medium is higher, and mechanical seal could must run well by long period at higher than the temperature of its crystallization point.
Summary of the invention
The object of the invention is to overcome above-mentioned not enough problem, a kind of bellows mechanical seal being applicable to crystallization operating mode is provided.
The technological scheme that the present invention is adopted for achieving the above object is: the bellows mechanical seal being applicable to crystallization operating mode, comprise stationary ring, welded metal bellow, seal chamber, end cover, described stationary ring, welded metal bellow are sleeved on axle sleeve successively, described seal chamber is sleeved on stationary ring, described end cover is sleeved on axle sleeve, and be connected with seal chamber, and form Seal cage therebetween, described Seal cage offers steam inlet and steam (vapor) outlet.
Seal cage is formed by installing gasket seal between described seal chamber and end cover.
Stationary ring circle is installed between described stationary ring and seal chamber.
Described welded metal bellow one end is positioned at the shoulder of axle sleeve, the other end and stationary ring end contact.
In described welded metal bellow, hold-down ring is installed.
Between described welded metal bellow and axle sleeve, seal ring of moving ring is installed.
Outfall is offered below described end cover.
Feature of the present invention is: adapt to worst hot case, sealing, good heat preservation performance, ensure that Seal cage remains at the condition of high temperature, crystallization and cause seal failure near mechanical seal end surface after effectively preventing dielectric leakage out, and adopt unit loading type design, be convenient to install, dismantle.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Wherein: 1, stationary ring circle 2, stationary ring 3, welded metal bellow 4, seal ring of moving ring 5, hold-down ring 6, short sleeve 7, seal chamber 8, wave tooth spacer 9, end cover 10, block 11, driving ring 12, location piece QI, steam inlet QO, steam (vapor) outlet D, outfall.
Embodiment
As shown in Figure 1, the present invention includes stationary ring 2, welded metal bellow 3, seal chamber 7, end cover 9, described stationary ring 2, welded metal bellow 3 is sleeved on axle sleeve successively, described welded metal bellow 3 one end is positioned at the shoulder of axle sleeve, the other end and stationary ring 2 end contact, in described welded metal bellow 3, hold-down ring 5 is installed, seal ring of moving ring 4, described hold-down ring 5 is connected with welded metal bellow 3 by socket head screw, and on hold-down ring 5, jackscrew is installed, described seal ring of moving ring 4 is between welded metal bellow 3 and axle sleeve, described seal chamber 7 is sleeved on stationary ring 2, stationary ring circle 1 is installed therebetween, described end cover 9 is sleeved on axle sleeve, and be connected with seal chamber 7 by socket head screw, sealed by wave tooth spacer 8 between described seal chamber 7 and end cover 9 and form Seal cage, and on Seal cage, offer two tapped holes: steam inlet QI and steam (vapor) outlet QO, described steam inlet QI is connected with corresponding pipeline by screw thread with steam (vapor) outlet QO, during mechanical seal work, high-temperature steam enters in Seal cage by steam inlet QI, drawn by steam (vapor) outlet QO again, Seal cage is made to remain at the condition of high temperature, can effectively prevent medium from crystallization and cause seal failure near mechanical seal end surface after leaking out between the end face of stationary ring 2 and welded metal bellow 3, and outfall D is offered below end cover 9, the medium leaked out is discharged, seal by spiral wound gasket between seal chamber 7 and pump chamber, better adaptation worst hot case, described end cover 9 exterior edge face is provided with location piece 12 by hexagon head bolt, described location piece 12 inserts in axle sleeve groove, described axle sleeve is installed driving ring 11, described driving ring 11 installs jackscrew, described jackscrew screws in driving ring 11 tapped hole and axle sleeve hole, between described driving ring 11 and end cover 9, block 10 is installed, described block 10 is fixed on end cover 9 by hexagon head bolt, a whole set of sealing have employed unit loading type design, scene is convenient to install, dismounting, and after pump impeller, design short sleeve 6, increase wave tooth spacer, O shape is installed between short sleeve 6 and axle sleeve enclose, pump shaft is protected completely, do not corrode by pumped medium.
During installation, seal ring of moving ring 4 and hold-down ring 5 are loaded in welded metal bellow 3, with interior hexagonal spiral shell, hold-down ring 5 and welded metal bellow 3 are coupled together, socket head screw does not tighten, screwed in by jackscrew in the screw thread of hold-down ring 5, endoporus is not appeared, and welded metal bellow 3 assembly is penetrated axle sleeve to shoulder, jackscrew is tightened, then socket head screw is tightened; Loaded by wave tooth spacer 8 in the groove of end cover 9 and seal chamber 7, tighten socket head screw and end cover 9 and seal chamber 7 are coupled together, penetrated by stationary ring circle 1 in stationary ring 2, together in indentation sealing cavity 7, stationary ring 5 pin-and-hole aims at pin; Stationary ring 5, seal chamber 7, end cover 9 assembly are penetrated axle sleeve to stationary ring 2 end face and welded metal bellow 3 end contact, location piece 12 to be inserted in axle sleeve groove and to tighten hexagon head bolt, block 10 is installed and tightens hexagon head bolt, driving ring 11 is penetrated axle sleeve and jackscrew is screwed in driving ring 11 tapped hole and axle sleeve hole, endoporus is not appeared, axle sleeve loads O shape circle, then on seal chamber 7, spiral wound gasket is installed, complete the assembling of a whole set of cartridge seal; Stud tightens on pump cover by scene, integrated mechanical sealing is penetrated stud to pump cover seam, tighten hexagon nut, by pump chamber and mechanical seal together through on pump shaft, again short sleeve 6 is also enclosed through O shape through on pump shaft, wave tooth spacer is loaded in short sleeve 6 groove, the parts such as impeller, axis head nut are finally installed, after installing mechanical seal, jackscrew on fastening driving ring 11, before driving, location piece 12 and hexagon head bolt taken off and keep, using in order to during dismounting mechanical seal.
Before mechanical seal work, by steam inlet QI and steam (vapor) outlet QO first logical hot steam in Seal cage, stop steam again after mechanical seal quits work, avoid medium crystallization.
The above; be only the present invention's preferably embodiment; but protection scope of the present invention is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the present invention discloses; be equal to according to technological scheme of the present invention and inventive concept thereof and replace or change, all should be encompassed within protection scope of the present invention.
Claims (7)
1. be applicable to the bellows mechanical seal of crystallization operating mode, it is characterized in that: comprise stationary ring (2), welded metal bellow (3), seal chamber (7), end cover (9), described stationary ring (2), welded metal bellow (3) are sleeved on axle sleeve successively, described seal chamber (7) is sleeved on stationary ring (2), described end cover (9) is sleeved on axle sleeve, and be connected with seal chamber (7), and form Seal cage therebetween, described Seal cage offers steam inlet (QI) and steam (vapor) outlet (QO).
2. being applicable to the bellows mechanical seal of crystallization operating mode as claimed in claim 1, it is characterized in that: between described seal chamber (7) and end cover (9), forming Seal cage by installing gasket seal.
3. be applicable to the bellows mechanical seal of crystallization operating mode as claimed in claim 1, it is characterized in that: stationary ring circle (1) is installed between described stationary ring (2) and seal chamber (7).
4. be applicable to the bellows mechanical seal of crystallization operating mode as claimed in claim 1, it is characterized in that: described welded metal bellow (3) one end is positioned at the shoulder of axle sleeve, the other end and stationary ring (2) end contact.
5. be applicable to the bellows mechanical seal of crystallization operating mode as claimed in claim 1, it is characterized in that: hold-down ring (5) is installed in described welded metal bellow (3).
6. be applicable to the bellows mechanical seal of crystallization operating mode as claimed in claim 1, it is characterized in that: seal ring of moving ring (4) is installed between described welded metal bellow (3) and axle sleeve.
7. be applicable to the bellows mechanical seal of crystallization operating mode as claimed in claim 1, it is characterized in that: described end cover (9) below offers outfall (D).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410822023.0A CN104514885A (en) | 2014-12-26 | 2014-12-26 | Bellows mechanical seal applicable to crystallization work condition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410822023.0A CN104514885A (en) | 2014-12-26 | 2014-12-26 | Bellows mechanical seal applicable to crystallization work condition |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104514885A true CN104514885A (en) | 2015-04-15 |
Family
ID=52790600
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410822023.0A Pending CN104514885A (en) | 2014-12-26 | 2014-12-26 | Bellows mechanical seal applicable to crystallization work condition |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104514885A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117759567A (en) * | 2024-02-22 | 2024-03-26 | 江苏武新泵业有限公司 | centrifugal pump sealing structure |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3356378A (en) * | 1965-04-26 | 1967-12-05 | Brog Warner Corp | Sealing ring assembly for a mechanical seal |
| US20040212154A1 (en) * | 2001-11-22 | 2004-10-28 | Mitsubishi Chemical Corporation | Method of transferring polymerizable liquid and apparatus for transfer |
| CN201297391Y (en) * | 2008-02-02 | 2009-08-26 | 陕西波世特石化机封制造有限公司 | Double-end static compensated welded metal bellows mechanical seal device |
| CN201443596U (en) * | 2009-07-30 | 2010-04-28 | 丹东市东升石化设备有限公司 | Anti-blockage mechanical seal device with metal corrugated pipe |
| CN102606737A (en) * | 2011-01-24 | 2012-07-25 | 祥景精机股份有限公司 | Composite clamping box type double-shaft seal |
| CN203670791U (en) * | 2013-12-26 | 2014-06-25 | 宁波安铱矢密封有限公司 | Medium-crystallization prevention or medium-gasifying prevention single end face sealing structure |
-
2014
- 2014-12-26 CN CN201410822023.0A patent/CN104514885A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3356378A (en) * | 1965-04-26 | 1967-12-05 | Brog Warner Corp | Sealing ring assembly for a mechanical seal |
| US20040212154A1 (en) * | 2001-11-22 | 2004-10-28 | Mitsubishi Chemical Corporation | Method of transferring polymerizable liquid and apparatus for transfer |
| CN201297391Y (en) * | 2008-02-02 | 2009-08-26 | 陕西波世特石化机封制造有限公司 | Double-end static compensated welded metal bellows mechanical seal device |
| CN201443596U (en) * | 2009-07-30 | 2010-04-28 | 丹东市东升石化设备有限公司 | Anti-blockage mechanical seal device with metal corrugated pipe |
| CN102606737A (en) * | 2011-01-24 | 2012-07-25 | 祥景精机股份有限公司 | Composite clamping box type double-shaft seal |
| CN203670791U (en) * | 2013-12-26 | 2014-06-25 | 宁波安铱矢密封有限公司 | Medium-crystallization prevention or medium-gasifying prevention single end face sealing structure |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117759567A (en) * | 2024-02-22 | 2024-03-26 | 江苏武新泵业有限公司 | centrifugal pump sealing structure |
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| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150415 |
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| WD01 | Invention patent application deemed withdrawn after publication |