CN108561557A - Magnetic compensation mechanically-sealing apparatus - Google Patents
Magnetic compensation mechanically-sealing apparatus Download PDFInfo
- Publication number
- CN108561557A CN108561557A CN201810465464.8A CN201810465464A CN108561557A CN 108561557 A CN108561557 A CN 108561557A CN 201810465464 A CN201810465464 A CN 201810465464A CN 108561557 A CN108561557 A CN 108561557A
- Authority
- CN
- China
- Prior art keywords
- stationary
- ring
- rotating
- seat
- magnetic
- Prior art date
- 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
Links
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
- F16J15/34—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member
- F16J15/3436—Pressing means
-
- 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
- F16J15/34—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member
- F16J15/3436—Pressing means
- F16J15/3444—Pressing means by magnetic attraction
-
- 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
- F16J15/34—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member
- F16J15/3436—Pressing means
- F16J15/3452—Pressing means the pressing force resulting from the action of a spring
-
- 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
- F16J15/34—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member
- F16J15/36—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member connected by a diaphragm or bellow to the other member
- F16J15/363—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member connected by a diaphragm or bellow to the other member the diaphragm or bellow being made of metal
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
Abstract
The invention discloses a kind of magnetic compensation mechanically-sealing apparatus, including mounting base, compensating element, and two ring bodies, ring body includes stationary ring body and rotating ring body, mounting base is installed on the shell of equipment to be sealed, one end of compensating element, connects mounting base, and the other end connects stationary ring body, rotating ring body is placed on the shaft of equipment to be sealed, end face seal is formed between stationary ring body and the both ends of the surface of rotating ring body contact；It is the magnetic magnetic substance of tool at least one both in stationary ring body and rotating ring body.The invention enables existing to attract each other between ring body or ring seat, even if in the case that compensating element, loses bullet after long time running, the effect of magnetic force is nevertheless suffered from, timely supplement the closing force of sealing ring, it avoids sealing ring gap excessive, ensures sealing effect, extend the service life of sealing device.
Description
Technical field
The present invention relates to technical field of mechanical to be mainly used for whirler more particularly to a kind of mechanically-sealing apparatus
In tool, such as various pumps, compressor and reaction Fu.
Background technology
Mechanical seal (mechanical seal) refers to perpendicular to the end face of rotation axis by least a pair in Fluid pressure
It keeps being bonded and constituting with respect to sliding under the action of compensation mechanism elastic force (or magnetic force) and under the cooperation of auxiliary seal
The device for preventing fluid from leaking.
Mechanical seal is widely used in oil, chemical industry, machinery and aerospace field.It is mainly used for rotating machinery, it is close
The effect of envelope is to prevent the leakage of sealed medium, while extraneous pollutant and impurity being prevented to enter equipment cavity, from
And the medium in contaminated equipment cavity.
Conventional machinery sealing structure is as shown in Figure 1, including mainly dynamic (quiet) the ring seat A1 rotated with axis, moving at present
(quiet) ring A2, quiet (dynamic) ring A3, quiet (dynamic) ring seat A4 and compensating element, A5.
The mechanism of mechanical seal is as follows：Rotating ring uses tight fit with rotating seat, rotates with the axis together, and stationary ring and stationary ring
Seat is static element, seals start of run, and rotating ring and stationary ring fit, and it is in cavity that, which there are one layer of micron-sized liquid film, liquid film in centre,
The layer fluid film that is formed toward external leakage of medium, when closing force (including the compensation member between two sealing rings (rotating ring and stationary ring)
The spring force of part, pressure of the intracavitary medium to sealing ring) with the opening force of sealing ring (include the contact force of sealing ring, fluid film
Pressure medium) it is equal when, liquid film reaches stable, and sealing reaches stress balance, sealing also can stable operation, seal fluid at this time
Film is stabilized, and medium will not be toward external leakage, and here it is the dominant mechanisms of sealing.
But mechanical seal at present, there is also many problems, some mechanical seals compensate original paper, such as after long time running
Spring, bellows are easy, because temperature alternating etc. causes fatigue to lose bullet, to cause compensating element, that cannot provide elastic force in time, work as sealing
After ring abrasion, seal face causes seal clearance excessive because lacking the elastic force of compensating element, causes the leakage of sealing, at present
Mechanical seal often there is dielectric leakage, the requirement of client is not achieved in service life.
Invention content
The invention mainly solves the technical problem of providing a kind of magnetic compensation mechanically-sealing apparatus so that ring body or ring seat
Between exist attract each other, even if in the case that compensating element, loses bullet after long time running, nevertheless suffer from the effect of magnetic force, and
When supplement sealing ring closing force, avoid sealing ring gap excessive, ensure sealing effect, extend sealing device use the longevity
Life.
In order to solve the above technical problems, one aspect of the present invention is：It is close to provide a kind of magnetic compensation machinery
Seal apparatus, including mounting base, compensating element, and two ring bodies, the ring body include stationary ring body and rotating ring body, the mounting base peace
One end of shell loaded on equipment to be sealed, the compensating element, connects the mounting base, and the other end connects the stationary ring body,
The rotating ring body is placed on the shaft of equipment to be sealed, and end face is formed between the stationary ring body and the both ends of the surface of rotating ring body contact
Sealing；
It is the magnetic magnetic substance of tool at least one both in the stationary ring body and the rotating ring body.
In order to solve the above technical problems, the further technical solution that the present invention uses is：
The rotating ring body includes rotating ring and rotating seat, and the rotating ring is installed on the rotating seat；
The stationary ring body includes stationary ring and stationary seat, and the stationary ring is installed on the stationary seat, and the one of the compensating element,
The stationary seat is fixed at end, and the other end is fixed on the mounting base；
The end face seal is formed between the stationary ring and the both ends of the surface of rotating ring contact.
It further says, the magnetic substance is by magnetization treatment and the magnetic substance with magnetic or internal embedment magnetic material
Magnetic substance.
It further says, the rotating seat is the poles N close to the side of stationary ring after magnetization treatment, and the stationary seat is through magnetization
The side of the close rotating ring is the poles S after processing；
Or the rotating seat is the poles S close to the side of stationary ring after magnetization treatment, the stationary seat is after magnetization treatment
It is the poles N close to the side of the rotating ring.
It further says, the rotating seat is the poles N or the poles S, the stationary seat close to the side of stationary ring after magnetization treatment
Without magnetization treatment；
Or the stationary seat is the poles N or the poles S close to the side of rotating ring after magnetization treatment, the rotating seat is without magnetization
Processing.
It further says, the inside of at least one of the rotating ring, the rotating seat, the stationary ring and described stationary seat is buried
Enter magnetic material.
It further says, the magnetic material being embedded in the stationary ring is revealed as the poles S close to the side of rotating ring, in the rotating ring
The magnetic material of embedment is revealed as the poles N close to the side of stationary ring；
Or the magnetic material being embedded in the stationary ring is revealed as the poles N, being embedded in the rotating ring close to the side of rotating ring
Magnetic material is revealed as the poles S close to the side of stationary ring.
It further says, the compensating element, is spring or metal bellows.
It further says, the stationary ring is connected for integral type with the stationary seat or split type connection；
The rotating ring is connected for integral type with the rotating seat or split type connection.
The beneficial effects of the invention are as follows：
The present invention includes mounting base, compensating element, and two ring bodies, and it is close to form planar end surface between the both ends of the surface of ring body contact
Envelope, at least one of two of which ring body are to have magnetic magnetic substance；So that the closing force of sealing ring includes not only compensation member
The elastic force and medium of part further include the magnetic force between sealing element to the pressure of sealing ring, therefore, even if the elastic force of compensating element,
It is scattered and disappeared due to fatigue, magnetic force can also be replenished in time；
When especially sealing device is used for worst cold case, advantage is particularly evident, and compensating element, is in the good easy mistake of cryogenic conditions
Effect damage, loses compensation performance, and the working environment of magnetic substance is by low temperature effect, and when compensating element, fails, magnetic force can
The loss of elastic force is made up, the closing force and opening force between two ring bodies of guarantee are equal, and sealing reaches stress balance, sealing effect
It is good；
Furthermore rationally design the size of magnetive attraction so that the closing force between two ring bodies, can in certain interval range
It is effective to reduce leakage with the effective closing force for ensureing sealing, while also avoiding excessive abrasion.
Above description is only the general introduction of technical solution of the present invention, in order to better understand the technical means of the present invention,
And can be implemented in accordance with the contents of the specification, below with presently preferred embodiments of the present invention and after coordinating attached drawing to be described in detail such as.
Description of the drawings
Fig. 1 is the structural schematic diagram of the prior art；
Fig. 2 is the structural schematic diagram of embodiment 1；
Fig. 3 is the structural schematic diagram of embodiment 2；
Fig. 4 is the structural schematic diagram of embodiment 3；
Each section label is as follows in attached drawing：
Mounting base 1, compensating element, 2, rotating ring 3, rotating seat 4, stationary ring 5, stationary seat 6 and magnetic block (7-N, 7-S).
Specific implementation mode
Illustrate that the specific implementation mode of the present invention, those skilled in the art can be by these below by way of particular specific embodiment
The revealed content of specification understands advantages of the present invention and effect easily.The present invention can also other different modes give
Implement, that is, under the scope of without departing substantially from disclosed, different modification and change can be given.
Embodiment：A kind of magnetic compensation mechanically-sealing apparatus, as shown in Fig. 2 to Fig. 4, including mounting base 1, compensating element, 2
With two ring bodies, the ring body includes stationary ring body and rotating ring body, and the mounting base is installed on the shell of equipment to be sealed, the benefit
The one end for repaying element connects the mounting base, and the other end connects the stationary ring body, and the rotating ring body is placed on equipment to be sealed
Shaft forms end face seal between the stationary ring body and the both ends of the surface of rotating ring body contact；
It is the magnetic magnetic substance of tool at least one both in the stationary ring body and the rotating ring body.
The rotating ring body includes rotating ring 3 and rotating seat 4, and the rotating ring is installed on the rotating seat；
The stationary ring body includes stationary ring 5 and stationary seat 6, and the stationary ring is installed on the stationary seat, the compensating element,
The stationary seat is fixed in one end, and the other end is fixed on the mounting base；
The end face seal is formed between the stationary ring and the both ends of the surface of rotating ring contact.
The magnetic substance is by magnetization treatment and the magnetic substance of the magnetic substance with magnetic or internal embedment magnetic material.
The compensating element, is spring or metal bellows.
The stationary ring is connected for integral type with the stationary seat or split type connection；
The rotating ring is connected for integral type with the rotating seat or split type connection.
In the present embodiment, the stationary ring and the stationary seat are split type connection；The rotating ring and the rotating seat are also
Split type connection.
Embodiment 1：A kind of magnetic compensation mechanically-sealing apparatus, as shown in Fig. 2, the rotating seat is close after magnetization treatment
The side of stationary ring is the poles N, and the stationary seat is the poles S close to the side of the rotating ring after magnetization treatment；
Or the rotating seat is the poles S close to the side of stationary ring after magnetization treatment, the stationary seat is after magnetization treatment
It is the poles N close to the side of the rotating ring.
In the present embodiment, Fig. 2 is the former.The rotating seat and stationary seat shows as attracting each other after magnetization, to
The closing force provided between end face is made by reasonably designing the size of magnetic force and considering the effect between each magnetic element
There are appropriate attractions between stationary ring body and rotating ring body, therefore, though compensating element, because long-time fatigue cause to lose
Bullet, magnetic force also can further make up, and ensure that the closing force between sealing ring will not be excessively small, can reduce letting out for sealing medium
Leakage.Extend the service life of sealing.
Embodiment 2：A kind of magnetic compensation mechanically-sealing apparatus, as shown in figure 3, the rotating seat is close after magnetization treatment
The side of stationary ring is the poles N or the poles S, and the stationary seat is without magnetization treatment；
Or the stationary seat is the poles N or the poles S close to the side of rotating ring after magnetization treatment, the rotating seat is without magnetization
Processing.
In the present embodiment, Fig. 3 is the former.
Embodiment 2 can not be excessive relative to embodiment 1 magnetization sealing element, only by rotating seat either stationary seat into
Row magnetization, and rationally design the size of magnetic force so that certain magnetic closing force is presented between stationary ring body and rotating ring body.
Embodiment 3：A kind of magnetic compensation mechanically-sealing apparatus, as shown in figure 4, the rotating ring, the rotating seat, described quiet
The inside of at least one of ring and the stationary seat is embedded to magnetic material.
The magnetic material being embedded in the stationary ring is revealed as the poles S, the magnetism being embedded in the rotating ring close to the side of rotating ring
Material is revealed as the poles N close to the side of stationary ring；
Or the magnetic material being embedded in the stationary ring is revealed as the poles N, being embedded in the rotating ring close to the side of rotating ring
Magnetic material is revealed as the poles S close to the side of stationary ring.
Magnetic material in the present embodiment is magnetic block (7-N, 7-S)；
Embodiment 3 can not magnetize sealing element relative to embodiment 1, only by rotating ring and stationary ring (or rotating seat and quiet
Ring seat) internal addition or surface attachment magnetic material magnetic block, and rationally design the size of magnetic force so that stationary ring body and
Certain magnetic closing force is presented between rotating ring body.
Example the above is only the implementation of the present invention is not intended to limit the scope of the invention, every to utilize this hair
Equivalent structure made by bright specification and accompanying drawing content is applied directly or indirectly in other relevant technical fields, similarly
It is included within the scope of the present invention.
Claims (9)
1. a kind of magnetic compensation mechanically-sealing apparatus, it is characterised in that：Including mounting base (1), compensating element, (2) and two rings
Body, the ring body include stationary ring body and rotating ring body, and the mounting base is installed on the shell of equipment to be sealed, the compensating element,
One end connects the mounting base, and the other end connects the stationary ring body, and the rotating ring body is placed on the shaft of equipment to be sealed, described
End face seal is formed between stationary ring body and the both ends of the surface of rotating ring body contact；
It is the magnetic magnetic substance of tool at least one both in the stationary ring body and the rotating ring body.
2. magnetic compensation mechanically-sealing apparatus according to claim 1, it is characterised in that：The rotating ring body includes rotating ring
(3) and rotating seat (4), the rotating ring are installed on the rotating seat；
The stationary ring body includes stationary ring (5) and stationary seat (6), and the stationary ring is installed on the stationary seat, the compensating element,
The stationary seat is fixed in one end, and the other end is fixed on the mounting base；
The end face seal is formed between the stationary ring and the both ends of the surface of rotating ring contact.
3. magnetic compensation mechanically-sealing apparatus according to claim 1, it is characterised in that：The magnetic substance is by magnetizing
It handles and the magnetic substance of the magnetic substance with magnetic or internal embedment magnetic material.
4. magnetic compensation mechanically-sealing apparatus according to claim 2, it is characterised in that：The rotating seat is through magnetization treatment
It is afterwards the poles N close to the side of stationary ring, the stationary seat is the poles S close to the side of the rotating ring after magnetization treatment；
Or the rotating seat is the poles S close to the side of stationary ring after magnetization treatment, the stationary seat is close after magnetization treatment
The side of the rotating ring is the poles N.
5. magnetic compensation mechanically-sealing apparatus according to claim 2, it is characterised in that：The rotating seat is through magnetization treatment
It is afterwards the poles N or the poles S close to the side of stationary ring, the stationary seat is without magnetization treatment；
Or the stationary seat after magnetization treatment close to rotating ring side be the poles N or the poles S, the rotating seat without magnetization at
Reason.
6. magnetic compensation mechanically-sealing apparatus according to claim 2, it is characterised in that：The rotating ring, the rotating seat,
The inside of at least one of the stationary ring and the stationary seat is embedded to magnetic material.
7. magnetic compensation mechanically-sealing apparatus according to claim 6, it is characterised in that：The magnetism being embedded in the stationary ring
Material is revealed as the poles S close to the side of rotating ring, and the magnetic material being embedded in the rotating ring is revealed as the poles N close to the side of stationary ring；
Or the magnetic material being embedded in the stationary ring is revealed as the poles N, the magnetism being embedded in the rotating ring close to the side of rotating ring
Material is revealed as the poles S close to the side of stationary ring.
8. magnetic compensation mechanically-sealing apparatus according to claim 1, it is characterised in that：The compensating element, be spring or
Metal bellows.
9. magnetic compensation mechanically-sealing apparatus according to claim 2, it is characterised in that：The stationary ring and the stationary seat
For integral type connection or split type connection；
The rotating ring is connected for integral type with the rotating seat or split type connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810465464.8A CN108561557A (en) | 2018-05-16 | 2018-05-16 | Magnetic compensation mechanically-sealing apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810465464.8A CN108561557A (en) | 2018-05-16 | 2018-05-16 | Magnetic compensation mechanically-sealing apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108561557A true CN108561557A (en) | 2018-09-21 |
Family
ID=63539051
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810465464.8A Pending CN108561557A (en) | 2018-05-16 | 2018-05-16 | Magnetic compensation mechanically-sealing apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108561557A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110721882A (en) * | 2019-04-10 | 2020-01-24 | 白霞 | Waterproof coating machine of cell-phone nanometer |
| CN112128504A (en) * | 2020-09-30 | 2020-12-25 | 洛阳双瑞特种装备有限公司 | Bellows expansion joint with leak safeguard function |
| CN112303239A (en) * | 2020-10-28 | 2021-02-02 | 中国计量大学 | Novel active dynamic pressure type air film end face sealing device and intelligent control method thereof |
| CN115264069A (en) * | 2022-07-05 | 2022-11-01 | 中国船舶重工集团公司第七一九研究所 | Sealing device based on magnetic force compensation |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2101141U (en) * | 1991-10-14 | 1992-04-08 | 沈阳水泵厂 | Magnetic machinery sealing |
| CN2818934Y (en) * | 2005-08-17 | 2006-09-20 | 艾志(南京)机械工业技术有限公司 | Bearing protecting sealer by magnetic force |
-
2018
- 2018-05-16 CN CN201810465464.8A patent/CN108561557A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2101141U (en) * | 1991-10-14 | 1992-04-08 | 沈阳水泵厂 | Magnetic machinery sealing |
| CN2818934Y (en) * | 2005-08-17 | 2006-09-20 | 艾志(南京)机械工业技术有限公司 | Bearing protecting sealer by magnetic force |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110721882A (en) * | 2019-04-10 | 2020-01-24 | 白霞 | Waterproof coating machine of cell-phone nanometer |
| CN112128504A (en) * | 2020-09-30 | 2020-12-25 | 洛阳双瑞特种装备有限公司 | Bellows expansion joint with leak safeguard function |
| CN112303239A (en) * | 2020-10-28 | 2021-02-02 | 中国计量大学 | Novel active dynamic pressure type air film end face sealing device and intelligent control method thereof |
| CN115264069A (en) * | 2022-07-05 | 2022-11-01 | 中国船舶重工集团公司第七一九研究所 | Sealing device based on magnetic force compensation |
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Application publication date: 20180921 |
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