CN210178930U - Gas spring mechanical seal - Google Patents
Gas spring mechanical seal Download PDFInfo
- Publication number
- CN210178930U CN210178930U CN201921120637.9U CN201921120637U CN210178930U CN 210178930 U CN210178930 U CN 210178930U CN 201921120637 U CN201921120637 U CN 201921120637U CN 210178930 U CN210178930 U CN 210178930U
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- CN
- China
- Prior art keywords
- gas spring
- ring
- ring seat
- cavity
- quiet
- 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.)
- Expired - Fee Related
Links
- 230000003068 static effect Effects 0.000 claims description 37
- 238000007789 sealing Methods 0.000 claims description 14
- 239000002184 metal Substances 0.000 claims description 3
- 239000004033 plastic Substances 0.000 claims description 3
- 238000001125 extrusion Methods 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract description 6
- 238000009434 installation Methods 0.000 abstract 2
- 238000010586 diagram Methods 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- Mechanical Sealing (AREA)
Abstract
The utility model discloses a gas spring mechanical seal, including quiet ring seat, gas spring, quiet ring, rotating ring and the rotating ring seat that has elastic compensation component, the rotating ring seat cover is in waiting to seal the pivot of equipment, quiet ring seat is formed with the cavity that holds the gas spring, quiet ring seat installation the quiet ring, the one end of gas spring with the one end of quiet ring is laminated, the rest of terminal surface of gas spring with the inner wall of cavity is laminated, the rotating ring seat installation the rotating ring, the rotating ring with the terminal surface that quiet ring contact forms end face seal; the gas spring is a gas spring with one end not closed and a cavity formed inside. The utility model discloses gas spring installs in quiet ring holder, and the reaction force that gas spring produced after receiving the extrusion of rotating ring and quiet ring can play the effect of supporting quiet ring to can compensate the phenomenon of losing the bullet after general elastic compensation component operates for a long time, improve sealed effect widely.
Description
Technical Field
The utility model belongs to the technical field of mechanical seal, especially, relate to a gas spring mechanical seal, mainly used among the rotating machinery, like various pumps, compressor and reactor etc..
Background
The mechanical seal is widely applied to the fields of petroleum, chemical industry, machinery and aerospace. The sealing device is mainly used for rotary machinery, the sealing function is to prevent the leakage of sealed media, and simultaneously prevent external pollutants and impurities from entering the equipment cavity, so that the media in the equipment cavity are polluted.
A currently common mechanical seal structure is shown in fig. 1, and mainly includes a moving (static) ring seat a1, a moving (static) ring a2, a static (dynamic) ring A3, a static (dynamic) ring seat a4, and a compensation element a5, which rotate together with a shaft.
The mechanism of mechanical sealing is as follows: the movable ring and the movable ring seat are tightly matched and rotate along with a shaft, the stationary ring and the stationary ring seat are stationary parts, at the initial stage of sealing operation, the movable ring and the stationary ring are attached, a micron-sized liquid film is arranged in the middle of the movable ring and the stationary ring, the liquid film is a layer of fluid film formed by outward leakage of a medium in the cavity, when the closing force (including the spring force of a compensation element and the pressure of the medium in the cavity on the sealing ring) between the two sealing rings (the movable ring and the stationary ring) is equal to the opening force (including the contact force of the sealing ring and the medium pressure of the fluid film) of the sealing ring, the liquid film is stable, the sealing reaches the stress balance, the sealing can also stably operate, the sealing fluid film exists stably at the moment, the medium cannot leak outwards, and.
However, most of the existing mechanical seals also have many problems, and springs are widely adopted as elastic compensation elements for most of the seals, but along with the long-time operation of the seals, the springs are easy to lose elasticity and the like, which directly results in seal failure, after the movable ring and the static ring rotate relatively for a long time, the movable ring and the static ring inevitably have material abrasion, once the elastic compensation elements lose elasticity, the movable ring and the static ring cannot be pushed to move in the axial direction in time, gaps exist between the movable ring and the static ring, which causes the leakage of sealing media, and the service life of the movable ring and the static ring cannot meet the requirements of customers.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the main technical problem who solves provides a gas spring mechanical seal, and gas spring installs in quiet ring holder, and the reaction force that produces after gas spring receives the extrusion of rotating ring and quiet ring can play the effect of supporting quiet ring to can compensate the phenomenon of losing the bullet after general elastic compensation component operates for a long time, improve sealed effect widely.
In order to solve the technical problem, the utility model discloses a technical scheme be: a gas spring mechanical seal comprises a static ring seat, a gas spring, a static ring, a movable ring and a movable ring seat with an elastic compensation element, wherein the movable ring seat is sleeved on a rotating shaft of equipment to be sealed, a cavity for accommodating the gas spring is formed in the static ring seat, the static ring seat is provided with the static ring, one end of the gas spring is attached to one end of the static ring, the other end faces of the gas spring are attached to the inner wall of the cavity, the movable ring seat is provided with the movable ring, and the end face of the movable ring, which is in contact with the static ring, forms end face seal;
the gas spring is a gas spring with a cavity formed inside, and the unclosed end of the gas spring is defined as an open end.
The utility model discloses a solve the further technical scheme that its technical problem adopted and be:
further, the open end of the gas spring is attached to one end of the stationary ring.
Further, the cavity is an M-shaped cavity, a V-shaped cavity or an O-shaped cavity.
Further, the gas spring is a rubber spring or a plastic spring.
Further, the stationary ring or the stationary ring seat is connected in a split manner.
Further, the movable ring or the movable ring seat is connected in a split mode.
Further, the compensation element is a spring or a metal bellows.
Furthermore, the movable ring seat is in interference fit with the rotating shaft.
The utility model has the advantages that: the utility model discloses a be connected with the pivot have the rotating ring seat of elastic compensation component, the rotating ring, quiet ring seat and gas spring, gas spring installs in quiet ring seat, gas spring is not closed, form an open annular, open end forms the fitting surface contact with quiet ring, when quiet ring and rotating ring contact, quiet ring is by the ring extrusion, quiet ring can extrude gas spring under the effect of extrusion force simultaneously, therefore, gas spring can produce and warp, because the gas spring that is not closed this moment forms a confined gas chamber with quiet ring contact back, receive the extrusion constantly as the gas chamber, will form great reaction force, thereby support quiet ring, share some compensation power of compensation component, guarantee not appear the clearance between quiet ring and the rotating ring. Therefore, the gas spring can compensate the phenomenon of spring loss of a common compensation element after long-time operation, and greatly prolongs the service life and the service performance of the seal.
Drawings
FIG. 1 is a schematic structural view of a prior art mechanical seal;
FIG. 2 is one of the schematic structural diagrams of the present invention;
fig. 3 is a second schematic structural diagram of the present invention;
fig. 4 is a third schematic structural diagram of the present invention;
the parts in the drawings are marked as follows:
the device comprises a static ring seat 1, a gas spring 2, a static ring 3, a movable ring 4 and a movable ring seat 5.
Detailed Description
The following detailed description of the preferred embodiments of the present invention will be provided in conjunction with the accompanying drawings, so as to enable those skilled in the art to more easily understand the advantages and features of the present invention, and thereby define the scope of the invention more clearly and clearly.
Example (b): a gas spring mechanical seal comprises a static ring seat 1, a gas spring 2, a static ring 3, a movable ring 4 and a movable ring seat 5 with an elastic compensation element, wherein the movable ring seat 5 is sleeved on a rotating shaft of equipment to be sealed, a cavity for accommodating the gas spring 2 is formed in the static ring seat 1, the static ring 3 is installed on the static ring seat 1, one end of the gas spring 2 is attached to one end of the static ring 3, the other end faces of the gas spring 2 are attached to the inner wall of the cavity, the movable ring seat 5 is installed with the movable ring 4, and the end face of the movable ring 4, which is in contact with the static ring 3, forms end face seal;
the gas spring 2 is a gas spring with one end not closed and a cavity formed inside, and the non-closed end of the gas spring 2 is defined as an open end.
The open end of the gas spring 2 is attached to one end of the stationary ring 3.
The cavity is an M-shaped cavity, a V-shaped cavity or an O-shaped cavity.
The gas spring 2 is a rubber spring or a plastic spring.
The static ring 3 or the static ring seat 1 is connected in a split mode.
The movable ring 4 or the movable ring seat 5 is in split connection.
The compensation element is a spring or a metal bellows.
The movable ring seat 5 and the rotating shaft are in interference fit.
As shown in fig. 2, the cavity is an M-shaped cavity.
As shown in fig. 3, the cavity is a V-shaped cavity, and the V-shaped gas spring can deform better than the M-shaped gas spring, is more sensitive to the extrusion force, and can act better and faster after the static ring and the dynamic ring are extruded and worn.
As shown in fig. 4, the cavity is an O-shaped cavity, and the O-shaped gas spring is easier to process than the M-shaped gas spring, has low manufacturing cost, and can reduce the increase of the gas internal pressure without causing a sudden pressure increase.
The working principle of the utility model is as follows:
the utility model discloses a be connected with the pivot have the rotating ring seat of elastic compensation component, the rotating ring, quiet ring seat and gas spring, gas spring installs in quiet ring seat, gas spring is not closed, form an open annular, open end forms the fitting surface contact with quiet ring, when quiet ring and rotating ring contact, quiet ring is by the ring extrusion, quiet ring can extrude gas spring under the effect of extrusion force simultaneously, therefore, gas spring can produce and warp, because the gas spring that is not closed this moment forms a confined gas chamber with quiet ring contact back, receive the extrusion constantly as the gas chamber, will form great reaction force, thereby support quiet ring, share some compensation power of compensation component, guarantee not appear the clearance between quiet ring and the rotating ring. Therefore, the gas spring can compensate the phenomenon of spring loss of a common compensation element after long-time operation, and greatly prolongs the service life and the service performance of the seal.
The above only is the embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structure changes made in the specification and the attached drawings or directly or indirectly applied to other related technical fields are included in the same principle as the present invention.
Claims (8)
1. A gas spring mechanical seal, characterized by: the sealing device comprises a static ring seat, a gas spring, a static ring, a movable ring and a movable ring seat with an elastic compensation element, wherein the movable ring seat is sleeved on a rotating shaft of equipment to be sealed, a cavity for accommodating the gas spring is formed in the static ring seat, the static ring seat is provided with the static ring, one end of the gas spring is attached to one end of the static ring, the other end faces of the gas spring are attached to the inner wall of the cavity, the movable ring seat is provided with the movable ring, and the end face of the movable ring, which is in contact with the static ring, forms end face sealing;
the gas spring is a gas spring with one end not closed and a cavity formed inside, and the non-closed end of the gas spring is defined as an open end.
2. A gas spring mechanical seal according to claim 1, wherein: the open end of the gas spring is attached to one end of the stationary ring.
3. A gas spring mechanical seal according to claim 1, wherein: the cavity is an M-shaped cavity, a V-shaped cavity or an O-shaped cavity.
4. A gas spring mechanical seal according to claim 1, wherein: the gas spring is a rubber spring or a plastic spring.
5. A gas spring mechanical seal according to claim 1, wherein: the static ring or the static ring seat is connected in a split mode.
6. A gas spring mechanical seal according to claim 1, wherein: the movable ring or the movable ring seat is connected in a split mode.
7. A gas spring mechanical seal according to claim 1, wherein: the compensation element is a spring or a metal bellows.
8. A gas spring mechanical seal according to claim 1, wherein: the movable ring seat is in interference fit with the rotating shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921120637.9U CN210178930U (en) | 2019-07-17 | 2019-07-17 | Gas spring mechanical seal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921120637.9U CN210178930U (en) | 2019-07-17 | 2019-07-17 | Gas spring mechanical seal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210178930U true CN210178930U (en) | 2020-03-24 |
Family
ID=69841096
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921120637.9U Expired - Fee Related CN210178930U (en) | 2019-07-17 | 2019-07-17 | Gas spring mechanical seal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210178930U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
-
2019
- 2019-07-17 CN CN201921120637.9U patent/CN210178930U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200324 |
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| CF01 | Termination of patent right due to non-payment of annual fee |