CN108506493A - It is a kind of can auto-control gap dry gas seals system and its regulation and control method - Google Patents
It is a kind of can auto-control gap dry gas seals system and its regulation and control method Download PDFInfo
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- CN108506493A CN108506493A CN201810368230.1A CN201810368230A CN108506493A CN 108506493 A CN108506493 A CN 108506493A CN 201810368230 A CN201810368230 A CN 201810368230A CN 108506493 A CN108506493 A CN 108506493A
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- Prior art keywords
- dry gas
- stationary ring
- auto
- gas seals
- face
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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
- F16J15/16—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
- F16J15/3492—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member with monitoring or measuring means associated with the seal
-
- 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
- F16J15/40—Sealings between relatively-moving surfaces by means of fluid
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
- Mechanical Sealing (AREA)
- Sealing Devices (AREA)
Abstract
The invention discloses it is a kind of can auto-control gap dry gas seals system and its regulation and control method, system includes stationary ring, rotating ring, spring, sensor, data collector, computer and segmented partition board；The sensor is arranged in stationary ring seal face, sensor is connected to data collector input terminal, data collector output end is connect with computer input terminal, and fanout connection control segmented partition board is fixedly installed several springs between segmented partition board and stationary ring non-tight end face；The seal face of rotating ring has circumferentially been evenly arranged several dynamic pressure grooves；Stationary ring seal face cooperatively forms dry gas seals with ring seal end face.Gathered data is transmitted to computer disposal by sensor, obtain seal face air film gap width, and provide the movement of signal drive segment formula partition board, each spring is compressed, stationary ring curved deflector compensates face deformation, so that seal face tends to be parallel, influence with Reducing distortion to sealing maintains sealing stable operation, reduces the risk of seal failure.
Description
Technical field
The invention belongs to dry gas seals system regions, the more particularly to a kind of dry gas seals system of sealing for rotating machinery
System.
Background technology
Based on the dry gas seals that gas bearing is theoretical and grows up, by processing various types on rotating ring surface
Dynamic pressure groove, seal face formed hydrodynamic effect so that between dynamic and static ring be in contactless state, realize sealing effect
Fruit.Dry gas seals have small power consumption, leakage rate be low, abrasion less, long lifespan many advantages, such as, have been widely used in all trades and professions
In the sealing of mechanical equipment.
With the high speed development of industry, modern mechanical and equipment are operated in the works such as high parameter such as high temperature, high pressure, high speed mostly
Under condition, the work of mechanical seal also tends to high temperature, high speed and high pressure, and to mechanical seal, more stringent requirements are proposed for this.
However in practical applications, inevitably there is seal failure, wherein face deformation be most important reason it
One.Seal face will be formed by the collective effect of centrifugal load, thermal force and aerodynamic loading and not wait deep gap as between restraining
Gap, diverging gap etc..Not equal deep gap destroys the stable operation of dry gas seals, causes end wear, increases seal failure
Risk.Therefore, it is necessary to study can auto-control gap dry gas seals system, make between Dry Gas Seal keeping parallelism
Gap, stable operation.
Invention content
The purpose of the present invention is to provide it is a kind of can auto-control gap dry gas seals system and its regulation and control method, be used for
The sealing of rotating machinery maintains sealing stable operation, reduces the wind of seal failure to reduce influence of the face deformation to sealing
Danger.
In order to achieve the above objectives, the present invention, which adopts the following technical scheme that, is achieved：
It is a kind of can auto-control gap dry gas seals system, including stationary ring, rotating ring, spring, sensor, data acquisition
Device, computer and segmented partition board；The sensor is arranged in stationary ring seal face, and sensor is connected to data collector input
End, data collector output end connect with computer input terminal, and fanout, which connects, controls segmented partition board, segmented every
It is fixedly installed several springs between plate and stationary ring non-tight end face；The seal face of rotating ring has circumferentially been evenly arranged several dynamic
Indent；Stationary ring seal face cooperatively forms dry gas seals with ring seal end face.
Further, the sensor is arranged circumferentially along different radial positions in stationary ring seal face.
Further, the spring along different radial positions be arranged circumferentially stationary ring non-tight end face and segmented every
Between plate.
Further, the rigidity of each spring is identical with damped coefficient.
Further, the rigidity of each spring and damped coefficient difference.
Further, segmented partition board includes several pieces, fixed between every piece of segmented partition board and stationary ring non-tight end face
A piece spring is set.
Further, stationary ring radial position is fixed, and can axially be moved.
It is a kind of can auto-control gap dry gas seals system regulation and control method, include the following steps：Dry gas seals are run,
Gap between its corresponding position stationary ring seal face of each sensor measurement and ring seal end face, and will be acquired by data
Data are delivered to computer and handled by device；Computer control each section of segmented partition board respectively along stationary ring axial movement it is different away from
From compressing each spring so that each spring provides different closing forces, makes stationary ring relative to rotating ring curved deflector, compensation sealing end
Facial disfigurement；During auto-control gap, computer (7) is according to seal clearance measurement result real-time control segmented partition board
It is mobile, until seal face tends to be parallel, until the depth of parallelism is in setting range.
Further, stationary ring seal face is circumferentially evenly arranged sensor, sensor respectively at different radial positions
For measuring blanket gas intermembrane space, same radial circumference sensor measurement, gas at the radial position can be obtained by being averaged
Intermembrane space；
Compared with the existing technology, the present invention has the following advantages：
(1) present invention is according to the seal face gap for measuring gained, the real-time adjusting control closing force of computer, adjust automatically
Seal clearance, compensation sealing face deformation so that seal face tends to be parallel, reduces sealing wear, prolongs the service life.
(2) multiple sensors are circumferentially evenly arranged at the same radial position of stationary ring end face, take each sensor measurement
Average value, obtain air film gap at the position, it is as a result more accurate；
(3) spring arranged at the radial position of stationary ring back side difference, rigidity and damping may be the same or different,
It can be flexibly applied to various working；
(4) the configuration of the present invention is simple, operation is flexible, is suitable for different operating modes, especially high temperature and high pressure condition.
In conclusion it is of the present invention it is a kind of can auto-control gap dry gas seals system and its regulation and control method, can
Auto-control seal clearance, influence of the Reducing distortion to sealing maintain sealing stable operation, reduce the risk of seal failure.
Description of the drawings
Fig. 1 be the present invention it is a kind of can auto-control gap dry gas seals system structural schematic diagram.
Fig. 2 is operational flow diagram of the present invention.
In figure：1 is stationary ring, and 2 be rotating ring, and 3 be dynamic pressure groove, and 4 be spring, and 5 be sensor, and 6 be data collector, and 7 be meter
Calculation machine, 8 be segmented partition board.
Specific implementation mode
Below in conjunction with attached drawing, the present invention is described in further detail.But this should not be interpreted as to the above-mentioned theme of the present invention
Range be limited only to the following contents.In the case where not departing from above-mentioned thought of the invention, according to ordinary skill knowledge
The various replacements or change made with customary means, should all be included within the scope of the invention.
Referring to Fig. 1, the present invention provide it is a kind of can auto-control gap dry gas seals system, including stationary ring 1, rotating ring 2, bullet
Spring 4, sensor 5, data collector 6, computer 7 and segmented partition board 8.
Sensor 5 is arranged in 1 seal face of stationary ring, and sensor 5 is connected to 6 input terminal of data collector, data collector 6
Output end is connect with 7 input terminal of computer, 7 output end of computer connection control segmented partition board 8, segmented partition board 8 and stationary ring 1
Several springs 4 are fixedly installed between non-tight end face.
The seal face upper edge of rotating ring 2 is arranged circumferentially dynamic pressure groove 3.
A kind of principle of adjustment and control of the dry gas seals system in auto-control gap of the present invention is：When dry gas seals work, due to
Not equal deep gap can be formed by the collective effect of centrifugal load, thermal force and aerodynamic loading, between seal face.Stationary ring 1
Seal face is circumferentially evenly arranged sensor 5 respectively at different radial positions, and sensor 5 accesses data collector 6, and will
Each sensing data is transmitted to computer 7 and is handled, and obtains seal face air film gap width.Computer 7 according to survey sealing
End face air film gap width control segmented partition board 8, each section of drive segment formula partition board moves different distance respectively in axial direction, and compression is each
Spring 4 so that each spring provides different closing forces, and 1 curved deflector certain angle of stationary ring compensates face deformation so that sealing
End face tends to be parallel.During auto-control gap, computer monitors in real time according to seal clearance measurement result, and controls
Segmented partition board moves, until seal face tends to be parallel.
Please refer to described in Fig. 2, the present invention provide it is a kind of can auto-control gap dry gas seals system regulation and control method, packet
Include following steps：Dry gas seals are run, its corresponding position stationary ring seal face of each sensor measurement and ring seal end face it
Between gap, and computer is passed data to by data collector and is handled；Computer controls each section of segmented partition board
Respectively along stationary ring move axially different distance, compress each spring so that each spring provides different closing forces, make stationary ring relative to
Rotating ring curved deflector, compensation sealing face deformation；During auto-control gap, computer is measured according to seal clearance and is tied
Fruit real-time control segmented partition board moves, until seal face tends to be parallel, until the depth of parallelism is in setting range.
Claims (8)
1. it is a kind of can auto-control gap dry gas seals system, which is characterized in that including stationary ring (1), rotating ring (2), spring
(4), sensor (5), data collector (6), computer (7) and segmented partition board (8)；
The sensor (5) is arranged in stationary ring (1) seal face, and sensor (5) is connected to data collector (6) input terminal, number
It is connect with computer (7) input terminal according to collector (6) output end, computer (7) output end connection control segmented partition board (8),
It is fixedly installed several springs (4) between segmented partition board (8) and stationary ring (1) non-tight end face；
The seal face of rotating ring (2) has circumferentially been evenly arranged several dynamic pressure grooves (3)；
Stationary ring (1) seal face cooperatively forms dry gas seals with rotating ring (2) seal face.
2. it is according to claim 1 it is a kind of can auto-control gap dry gas seals system, which is characterized in that the sensing
Device (5) is arranged circumferentially along different radial positions in stationary ring (1) seal face.
3. it is according to claim 1 it is a kind of can auto-control gap dry gas seals system, which is characterized in that the spring
(4) it is arranged circumferentially between stationary ring (1) non-tight end face and segmented partition board (8) along different radial positions.
4. it is according to claim 1 it is a kind of can auto-control gap dry gas seals system, which is characterized in that each spring
(4) rigidity is identical with damped coefficient.
5. it is according to claim 1 it is a kind of can auto-control gap dry gas seals system, which is characterized in that each spring
(4) rigidity and damped coefficient difference.
6. it is according to claim 1 it is a kind of can auto-control gap dry gas seals system, which is characterized in that segmented every
Plate (8) includes several pieces, and a spring (4) is fixedly installed between every piece of segmented partition board (8) and stationary ring (1) non-tight end face.
7. it is according to claim 1 it is a kind of can auto-control gap dry gas seals system, which is characterized in that stationary ring (1)
Radial position is fixed, and can axially be moved.
8. it is a kind of can auto-control gap dry gas seals system regulation and control method, which is characterized in that be based on claim 1 to 7
Any one of described in it is a kind of can auto-control gap dry gas seals system, include the following steps：Dry gas seals are run, each to pass
Sensor (5) measures the gap between its corresponding position stationary ring (1) seal face and rotating ring (2) seal face, and will pass through number
Data computer (7) is delivered to according to collector (6) to handle；Computer (7) controls each section of segmented partition board (8) respectively along quiet
Ring moves axially different distance, compresses each spring so that each spring provides different closing forces, and stationary ring is made to be bent relative to rotating ring
Deflection, compensation sealing face deformation；During auto-control gap, computer (7) is real according to seal clearance measurement result
When control segmented partition board movement, until the seal face depth of parallelism is in setting range.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810368230.1A CN108506493B (en) | 2018-04-23 | 2018-04-23 | Dry gas sealing system capable of automatically regulating and controlling gap and regulating and controlling method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810368230.1A CN108506493B (en) | 2018-04-23 | 2018-04-23 | Dry gas sealing system capable of automatically regulating and controlling gap and regulating and controlling method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108506493A true CN108506493A (en) | 2018-09-07 |
| CN108506493B CN108506493B (en) | 2020-03-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810368230.1A Active CN108506493B (en) | 2018-04-23 | 2018-04-23 | Dry gas sealing system capable of automatically regulating and controlling gap and regulating and controlling method thereof |
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| CN (1) | CN108506493B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109578591A (en) * | 2018-10-30 | 2019-04-05 | 西安交通大学 | A kind of dry gas sealing device and its regulation method suitable for variable working condition |
| CN110159764A (en) * | 2019-05-31 | 2019-08-23 | 清华大学 | Intelligent mechanical sealing system and its implementation |
| CN111271459A (en) * | 2020-03-27 | 2020-06-12 | 中国铁建重工集团股份有限公司 | Device and method for controlling sealing compression amount and readable storage medium |
| CN117469370A (en) * | 2023-12-27 | 2024-01-30 | 中国核动力研究设计院 | Dry gas sealing device free of isolation gas |
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| JPH07113471A (en) * | 1993-10-15 | 1995-05-02 | Mitsubishi Heavy Ind Ltd | Sealing device |
| JP2011231880A (en) * | 2010-04-28 | 2011-11-17 | Mitsubishi Heavy Ind Ltd | Dry gas seal structure |
| CN103711912A (en) * | 2014-01-09 | 2014-04-09 | 中国石油大学(华东) | Closed-loop control type magnetic levitation fluid dynamic seal device |
| CN204988696U (en) * | 2015-07-24 | 2016-01-20 | 中国石油大学(华东) | Multiplex condition mechanical seal performance experimental apparatus system of observing and controling |
| CN206329739U (en) * | 2016-12-15 | 2017-07-14 | 江苏大学 | A kind of seal clearance control system of non-contact mechanical seal |
| CN107387774A (en) * | 2017-08-28 | 2017-11-24 | 浙江工业大学 | A kind of adaptive dry gas seals system regulated and controled online based on spring pressure |
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2018
- 2018-04-23 CN CN201810368230.1A patent/CN108506493B/en active Active
Patent Citations (6)
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| JPH07113471A (en) * | 1993-10-15 | 1995-05-02 | Mitsubishi Heavy Ind Ltd | Sealing device |
| JP2011231880A (en) * | 2010-04-28 | 2011-11-17 | Mitsubishi Heavy Ind Ltd | Dry gas seal structure |
| CN103711912A (en) * | 2014-01-09 | 2014-04-09 | 中国石油大学(华东) | Closed-loop control type magnetic levitation fluid dynamic seal device |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109578591A (en) * | 2018-10-30 | 2019-04-05 | 西安交通大学 | A kind of dry gas sealing device and its regulation method suitable for variable working condition |
| CN109578591B (en) * | 2018-10-30 | 2020-01-10 | 西安交通大学 | Dry gas sealing device suitable for variable working conditions and regulating and controlling method thereof |
| CN110159764A (en) * | 2019-05-31 | 2019-08-23 | 清华大学 | Intelligent mechanical sealing system and its implementation |
| CN110159764B (en) * | 2019-05-31 | 2024-01-23 | 清华大学 | Intelligent mechanical sealing system and implementation method thereof |
| CN111271459A (en) * | 2020-03-27 | 2020-06-12 | 中国铁建重工集团股份有限公司 | Device and method for controlling sealing compression amount and readable storage medium |
| CN117469370A (en) * | 2023-12-27 | 2024-01-30 | 中国核动力研究设计院 | Dry gas sealing device free of isolation gas |
| CN117469370B (en) * | 2023-12-27 | 2024-03-08 | 中国核动力研究设计院 | Dry gas sealing device free of isolation gas |
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| Publication number | Publication date |
|---|---|
| CN108506493B (en) | 2020-03-17 |
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