CN104565368A - Parking seal device for top stirrer and seal method thereof - Google Patents
Parking seal device for top stirrer and seal method thereof Download PDFInfo
- Publication number
- CN104565368A CN104565368A CN201510012709.8A CN201510012709A CN104565368A CN 104565368 A CN104565368 A CN 104565368A CN 201510012709 A CN201510012709 A CN 201510012709A CN 104565368 A CN104565368 A CN 104565368A
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- China
- Prior art keywords
- piston
- axle
- parking
- overhead
- sealing arrangement
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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.)
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Classifications
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- 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
- F16J15/02—Sealings between relatively-stationary surfaces
- F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pressure Vessels And Lids Thereof (AREA)
- Sealing Devices (AREA)
Abstract
The invention discloses a parking seal device for a top stirrer and a seal method thereof. The parking seal device for the top stirrer comprises a cavity, a bottom disk, a piston and a stop block, wherein the bottom disk sleeves a shaft, the cavity is installed on the upper portion of the bottom disk, the stop block is fixed on the shaft, the piston is inserted into a position between the shaft and the bottom disk, the piston can slide up and down along the shaft, the lower end face of the piston is attached to the upper end face of the bottom disk when the piston slides down, the upper end face of the piston is attached to the lower end face of the stop block when the piston slides up, and seal pieces are arranged among the piston and the cavity and between the piston and the bottom disk and between the piston and the stop block. The parking seal device for the top stirrer has the advantages that when a machine seal of the top stirrer needs to stop for an overhaul, the machine seal can be overhauled and replaced on the premise of guaranteeing temperature and pressure in a kettle without need of clearing materials, work efficiency can be improved, maintenance cost can be reduced, and furthermore the whole parking seal device for the top stirrer is simple in structure and convenient to assemble and disassemble, the installation size of the upper portion of the parking seal device for the top stirrer is as same as the installation size of the upper portion of the top stirrer, and when the parking seal device for the top stirrer is not needed, the machine seal can be directly installed on the top stirrer, and size universality is achieved.
Description
Technical field
The present invention relates to mechanical seal field, be specifically related to a kind of parking sealing arrangement for overhead and encapsulating method thereof.
Background technique
Material in overhead is in full still state often, normally when changing mechanical seal, needs equipment uncovered, needs material to clean out just can carry out sealing replacing, otherwise material can leak or in still, medium does not allow to contact with air, and cannot change.
Summary of the invention
The object of the invention is to overcome above-mentioned not enough problem, a kind of parking sealing arrangement for overhead and encapsulating method thereof are provided.
The technological scheme that the present invention is adopted for achieving the above object is: for the parking sealing arrangement of overhead, comprise cavity, chassis, piston, block, described base plate cover is contained on axle, described cavity is arranged on chassis upper, described block is fixed on axle, and Sealing is installed therebetween, described piston sleeve is contained between axle and chassis, described piston can along the upper and lower slippage of axle, fit in its lower end surface of the downward slippage of described piston and upper-end surface, chassis, the upwards slippage of described piston, fit in its upper-end surface and block lower end surface, described piston and cavity, chassis, Sealing is equipped with between block.
Described piston is provided with guide finger.
Described guide finger is arranged on and covers, and described upper cover is connected with cavity.
Between described upper cover and cavity, locating stud is installed.
Described block is fixed on axle by jackscrew.
Between described block and axle, Sealing is O type circle two.
Sealing between described piston and block is O type circle one, and described O type circle one is arranged in O type ring recess that piston is offered.
Described O type ring recess is dovetail groove.
Described parking sealing arrangement is arranged between overhead mechanical seal and stirrer, and described parking sealing arrangement top installation dimension is identical with stirrer top installation dimension.
For the encapsulating method of the parking sealing arrangement of overhead, when normally working, the cracking pressure P4 of piston does not pressurize, and piston is fallen by deadweight and still internal pressure P1, and now fit in piston lower surface and upper-end surface, chassis; After parking, step one: the cracking pressure P4 pressurization of piston, make P4>P1, piston rises, and now fit in piston upper-end surface and block lower end surface; Step 2: after dismantling ten thousand coupling and mechanical seal, P4 remains pressure, fallen by axle, the gravity of axle falls together with piston, until block and chassis compress piston on axle, continues to keep sealing in still; Step 3: when installing mechanical seal and coupling, is increased P4 pressure, is risen by piston by P4 pressure, and axle picking-up is installed; Step 4: after installation, stationary axle, reduce P4 pressure gradually, piston pushes by still internal pressure P1, and piston and axle depart from, running of can driving.
Feature of the present invention is: when the mechanical seal of overhead needs parking maintenance, the material in stirrer need not be removed, ensure temperature in the kettle and pressure, just can carry out maintenance and the replacing of mechanical seal, reach the object increasing work efficiency and reduce maintenance cost, and a whole set of parking sealing arrangement structure is simply convenient to handling, its top installation dimension is identical with stirrer top installation dimension, when not needing parking sealing arrangement, mechanical seal can be directly installed on stirrer, realizes size generalization.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is step phase diagram of the present invention for the moment.
Phase diagram of the present invention when Fig. 3 is step 2.
Phase diagram of the present invention when Fig. 4 is step 3.
Phase diagram of the present invention when Fig. 5 is step 4.
Fig. 6 is the present invention's application schematic diagram.
Wherein: 1, cavity 2, upper cover 3, locating stud 4, chassis 5, piston 6, guide finger 7, block 8, jackscrew 9, O type circle 2 10, O type circle 1, screw 12, bolt.
Embodiment
As Fig. 1, shown in 6, the present invention is a kind of parking sealing arrangement for overhead, described parking sealing arrangement is arranged between overhead mechanical seal and stirrer, and described parking sealing arrangement top installation dimension is identical with stirrer top installation dimension, the present invention includes cavity 1, chassis 4, piston 5, block 7, described chassis 4 is sleeved on axle, described cavity 1 is fixedly mounted on top, chassis 4 by bolt 12, described block 7 is fixed on axle by jackscrew 8, and Sealing is installed therebetween, Sealing preferred O type circle 29, described piston 5 is sleeved between axle and chassis 4, described piston 5 can along the upper and lower slippage of axle, the slippage downwards of described piston 5, fit in its lower end surface and upper-end surface, chassis 4, the upwards slippage of described piston 5, fit in its upper-end surface and block 7 lower end surface, described piston 5 and cavity 1, chassis 4, Sealing is equipped with between block 7, Sealing is O type circle all preferably, Sealing between wherein said piston 5 and block 7 is O type circle 1, described O type circle 1 is arranged in O type ring recess that piston 5 is offered, described O type ring recess is dovetail groove, described piston 5 is provided with guide finger 6, described guide finger 6 is arranged on upper cover 2, described upper cover 2 is fixedly connected with by screw 11 with cavity 1, between described upper cover 2 and cavity 1, locating stud 3 is installed.
When normally working, the cracking pressure P4 of piston 5 does not pressurize, and piston 5 is fallen by deadweight and still internal pressure P1, and now fit in piston 5 lower end surface and upper-end surface, chassis 4; After parking, step one: as shown in Figure 2, by giving the bottom compression of piston 5, namely piston 5 cracking pressure P4 pressurizes, make P4>P1, piston 5 rises, and now fit in piston 5 upper-end surface and block 7 lower end surface, O type circle 1 and the block 7 of piston 5 upper-end surface are adjacent to, and reach the effect of sealing; Step 2: as shown in Figure 3, after dismantling ten thousand coupling and mechanical seal, axle is fallen, the gravity of axle falls together with piston 5, until block 7 and chassis 4 compress piston 5 on axle, and is sealed by the Sealing between piston 5 and cavity 1, chassis 4, continue in still to keep sealing, now temperature in the kettle pressure is all constant, and P4 remains pressure, and piston 5 is fitted with block 7 all the time; Step 3: as shown in Figure 4, when installing mechanical seal and coupling, being increased P4 pressure, being risen by piston 5 by P4 pressure, and axle picking-up is installed; Step 4: as shown in Figure 5, after installation is complete, stationary axle, reduce P4 pressure gradually, piston 5 pushes by still internal pressure P1, and piston 5 and axle are departed from, running of can driving.
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 (10)
1. for the parking sealing arrangement of overhead, it is characterized in that: comprise cavity (1), chassis (4), piston (5), block (7), described chassis (4) is sleeved on axle, described cavity (1) is arranged on chassis (4) top, described block (7) is fixed on axle, and Sealing is installed therebetween, described piston (5) is sleeved between axle and chassis (4), described piston (5) can along the upper and lower slippage of axle, described piston (5) slippage downwards, fit in its lower end surface and chassis (4) upper-end surface, described piston (5) upwards slippage, fit in its upper-end surface and block (7) lower end surface, described piston (5) and cavity (1), chassis (4), block is equipped with Sealing between (7).
2., as claimed in claim 1 for the parking sealing arrangement of overhead, it is characterized in that: described piston (5) is provided with guide finger (6).
3., as claimed in claim 2 for the parking sealing arrangement of overhead, it is characterized in that: described guide finger (6) is arranged on upper cover (2), and described upper cover (2) is connected with cavity (1).
4., as claimed in claim 3 for the parking sealing arrangement of overhead, it is characterized in that: locating stud (3) is installed between described upper cover (2) and cavity (1).
5., as claimed in claim 1 for the parking sealing arrangement of overhead, it is characterized in that: described block (7) is fixed on axle by jackscrew (8).
6., as claimed in claim 1 for the parking sealing arrangement of overhead, it is characterized in that: between described block (7) and axle, Sealing is O type circle two (9).
7. as claimed in claim 1 for the parking sealing arrangement of overhead, it is characterized in that: the Sealing between described piston (5) and block (7) is O type circle one (10), described O type circle one (10) is arranged in O type ring recess that piston (5) is offered.
8., as claimed in claim 2 for the parking sealing arrangement of overhead, it is characterized in that: described O type ring recess is dovetail groove.
9. as claimed in claim 1 for the parking sealing arrangement of overhead, it is characterized in that: described parking sealing arrangement is arranged between overhead mechanical seal and stirrer, and described parking sealing arrangement top installation dimension is identical with stirrer top installation dimension.
10. as claimed in claim 1 for the encapsulating method of the parking sealing arrangement of overhead, it is characterized in that: when normally working, the cracking pressure P4 of piston (5) does not pressurize, piston (5) is fallen by deadweight and still internal pressure P1, and now fit in piston (5) lower end surface and chassis (4) upper-end surface; After parking, step one: the cracking pressure P4 pressurization of piston (5), make P4>P1, piston (5) rises, and now fit in piston (5) upper-end surface and block (7) lower end surface; Step 2: after dismantling ten thousand coupling and mechanical seal, P4 remains pressure, fallen by axle, the gravity of axle falls together with piston (5), until block (7) and chassis (4) compress piston (5) on axle, continues to keep sealing in still; Step 3: when installing mechanical seal and coupling, increases P4 pressure, is risen by piston (5) by P4 pressure, and axle picking-up is installed; Step 4: after installation, stationary axle, reduce P4 pressure gradually, piston (5) pushes by still internal pressure P1, and piston (5) and axle depart from, running of can driving.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510012709.8A CN104565368B (en) | 2015-01-12 | 2015-01-12 | Parking sealing arrangement and encapsulating method thereof for overhead |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510012709.8A CN104565368B (en) | 2015-01-12 | 2015-01-12 | Parking sealing arrangement and encapsulating method thereof for overhead |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104565368A true CN104565368A (en) | 2015-04-29 |
| CN104565368B CN104565368B (en) | 2016-09-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510012709.8A Active CN104565368B (en) | 2015-01-12 | 2015-01-12 | Parking sealing arrangement and encapsulating method thereof for overhead |
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| Country | Link |
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| CN (1) | CN104565368B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2081910U (en) * | 1991-01-26 | 1991-07-31 | 上海化工机泵厂 | Hydraulic-release type sealing device on stalling |
| JPH07239039A (en) * | 1994-02-28 | 1995-09-12 | Ntn Corp | Device for sealing rotating shaft |
| JPH07239040A (en) * | 1994-02-28 | 1995-09-12 | Ntn Corp | Device for sealing rotating shaft |
| CN201818538U (en) * | 2010-10-13 | 2011-05-04 | 磨锐泵（上海）有限公司 | Hydraulic slide-valve type stop sealing mechanism for dynamic sealing of auxiliary impeller in centrifugal pump |
| RU2482363C1 (en) * | 2012-03-28 | 2013-05-20 | Закрытое акционерное общество "Научно-исследовательский и конструкторский институт центробежных и роторных компрессоров им. В.Б. Шнеппа" | Stop seal of centrifugal compressor |
-
2015
- 2015-01-12 CN CN201510012709.8A patent/CN104565368B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2081910U (en) * | 1991-01-26 | 1991-07-31 | 上海化工机泵厂 | Hydraulic-release type sealing device on stalling |
| JPH07239039A (en) * | 1994-02-28 | 1995-09-12 | Ntn Corp | Device for sealing rotating shaft |
| JPH07239040A (en) * | 1994-02-28 | 1995-09-12 | Ntn Corp | Device for sealing rotating shaft |
| CN201818538U (en) * | 2010-10-13 | 2011-05-04 | 磨锐泵（上海）有限公司 | Hydraulic slide-valve type stop sealing mechanism for dynamic sealing of auxiliary impeller in centrifugal pump |
| RU2482363C1 (en) * | 2012-03-28 | 2013-05-20 | Закрытое акционерное общество "Научно-исследовательский и конструкторский институт центробежных и роторных компрессоров им. В.Б. Шнеппа" | Stop seal of centrifugal compressor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104565368B (en) | 2016-09-28 |
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Inventor after: Zhang Baojun Inventor after: Zhao Lijuan Inventor after: Cao Da Inventor before: Wang Yupeng |
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