CN209459594U - A kind of non-contact mechanical seal end face fluid film thickness measurement device - Google Patents
A kind of non-contact mechanical seal end face fluid film thickness measurement device Download PDFInfo
- Publication number
- CN209459594U CN209459594U CN201920472774.2U CN201920472774U CN209459594U CN 209459594 U CN209459594 U CN 209459594U CN 201920472774 U CN201920472774 U CN 201920472774U CN 209459594 U CN209459594 U CN 209459594U
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- China
- Prior art keywords
- ring
- stationary ring
- film thickness
- contact
- reflecting paper
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Abstract
The utility model relates to a kind of measuring devices, especially a kind of non-contact mechanical seal end face fluid film thickness measurement device, including seal chamber, stationary seat, outer press cover, outer stationary ring, reflecting paper, optical fibre displacement sensor, outer rotating ring and bearing etc., the outer stationary ring left side and outer throw-out collar right contact, right side and outer rotating ring left contact, the reflecting paper is attached on the right side of outer stationary ring, the optical fibre displacement sensor is fixed on outer press cover, and sensor probe is kept at a distance from 300~900 μm with reflecting paper.The utility model is the utility model has the advantages that the device can be to avoid bear vibration bring error, it more can accurately measure the axial displacement of outer stationary ring, to accurately measurement end surface current body film thickness, the device only need to paste reflecting paper on outer stationary ring, there is no special requirement to integrated tooling, facilitate installation, disassembly, there is very strong practicability.
Description
Technical field
The utility model relates to a kind of measuring device, especially a kind of non-contact mechanical seal end face fluid film thickness measuring
Device.
Background technique
Non-contact mechanical seal is the main seal pattern of fluid machinery, in the fields such as petrochemical industry and aerospace
It is widely used, in terms of reliability is mainly reflected in dynamic pressure effect and stability, so guaranteeing sealing loop system
Dynamic pressure stability is the key that non-contact mechanical seal plays superperformance, therefore the experiment to sealing loop system dynamic pressure effect
Research has great significance, and experimental study be unable to do without the test of mechanical seal end surface fluid film thickness.Many ends at this stage
It is right for convenience of the installation of sensor although surface current body film thickness measuring scheme can accurately obtain dynamic and static ring axial displacement
Integrated tooling transformation is more, and experiment versatility is poor.And in subsequent calculating end face fluid film thickness, vulnerable to sensor accuracy class
It is influenced with brought by dynamic and static ring axial vibration, therefore, it is difficult to promote and apply.
Utility model content
The utility model aims to solve the problem that the above problem, provides a kind of non-contact mechanical seal end face fluid film thickness measuring
Device, it by installed on outer press cover sensor in the way of measure the axial displacement of non-contact mechanical seal sealing ring,
The axial displacement of outer stationary ring more can be accurately measured, thus the end face fluid film being precisely calculated between rotating ring and stationary ring
Thickness, and the device only needs to install the gland of the structure, does not have special requirement to integrated tooling, facilitates installation, disassembly, tool
There is very strong practicability.The technical scheme adopted is as follows:
A kind of non-contact mechanical seal end face fluid film thickness measurement device, including internal gland, hexagon socket cap head screw,
Snap ring, oil sealing, O-ring, stop pin, interior stationary ring, seal chamber, interior rotating ring, axle sleeve, interior throw-out collar, inner spring, spring base, interior hexagonal
Female end holding screw, locking nut, outer press cover, outer stationary ring, outer spring, outer throw-out collar, outer rotating ring, optical fibre displacement sensor, reflection
Paper, positioning sleeve, bearing, the internal gland are connected by hexagon socket cap head screw with seal chamber, and the oil sealing is solid by snap ring
It is scheduled on internal gland, the stop pin is set between interior stationary ring and internal gland, is connect on the right side of the interior stationary ring with interior rotating ring left side
Touching, the snap ring are fixed on spring base, the interior rotating ring right side and interior throw-out collar left contact, the inner spring left side and interior throw-out collar
Right contact, right side are contacted with spring base, and the spring base is connect by interior hexagon concave-end locking screw with axle sleeve, the stationary ring
Seat is connect by hexagon socket cap head screw with seal chamber, is contacted on the left of the outer spring with stationary seat, and right side and outer throw-out collar are left
Side contacts, the outer stationary ring left side and outer throw-out collar right contact, right side and outer rotating ring left contact, the reflecting paper is attached to outer quiet
On the right side of ring, the positioning sleeve is fixed on axle sleeve by hexagon socket cap head screw, and the axle sleeve passes through locking nut and bearing
Connection, the outer press cover are connect by hexagon socket cap head screw with seal chamber, and the optical fibre displacement sensor is fixed on external pressure
It covers, left side is kept at a distance from 0.3~0.9mm with reflecting paper.
The annular groove of a placement snap ring is respectively equipped on the internal gland, spring base and stationary seat, it is the internal gland, interior
The annular groove of a placement O-ring is respectively equipped on stationary ring, interior rotating ring, axle sleeve, stationary seat, outer stationary ring and outer rotating ring.
The utility model has the advantages that the device is arranged on stationary ring using reflecting paper, and sensor arrangement is in gland
On structure type, optical fibre displacement sensor is arranged on outer press cover, probe and the reflecting paper on outer stationary ring keep 300~
900 μm of distance measures the axial displacement of outer stationary ring, can guarantee the precision and accurately of measurement using optical fibre displacement sensor
Property.Meanwhile sensor arrangement is in the upper half of outer press cover, to guarantee that test medium will not leak at sensor.This
Outside, it is stationary ring which, which is tested sealing ring, does not contact with bearing, bear vibration bring error can be reduced, thus more
Accurately measurement end surface current body film thickness, the device only need to paste reflecting paper on outer stationary ring, and there do not have to integrated tooling to be special
It is required that facilitating installation, disassembly, there is very strong practicability.
Detailed description of the invention
A kind of Fig. 1: structural schematic diagram of non-contact mechanical seal end face fluid film thickness measurement device；
A kind of Fig. 2: partial structural diagram of non-contact mechanical seal end face fluid film thickness measurement device；
Fig. 3: a kind of internal diameter of non-contact mechanical seal end face fluid film thickness measurement device opens fluid dynamic pressure groove profile of groove；
Symbol description:
1. internal gland, 2. hexagon socket cap head screw I, 3. hexagon socket cap head screw II, 4. snap ring I, 5. oil sealings, 6.O
Type circle I, 7. stop pins, stationary ring in 8.O type circle II, 9., 10. seal chambers, 11. snap ring II, rotating ring in 12., 13.O type circle III,
14, axle sleeve, throw-out collar in 15., 16. inner springs, 17. spring bases, hexagon concave-end locking screw, 19.O type circle IV, 20. are quiet in 18.
Ring seat, 21. outer springs, 22. outer throw-out collars, 23.O type circle V, 24.O type circle VI, 25. asbestos washers, hexagonal cylindrical head spiral shell in 26.
Follow closely III, 27. hexagon socket cap head screws IV, 28. outer press covers, 29. snap rings III, 30. outer stationary rings, 31. reflecting papers, 32. optical fiber positions
Displacement sensor, 33. outer rotating rings, 34.O type circle VII, 35. hexagon socket cap head screws V, 36. positioning sleeves, 37. locking nuts, 38.
Bearing.
Specific embodiment
The utility model is described in further detail with example with reference to the accompanying drawing:
As shown in Figure 1, the utility model is a kind of non-contact mechanical seal end face fluid film thickness measurement device, including interior
Gland (1), hexagon socket cap head screw I (2), hexagon socket cap head screw II (3), snap ring I (4), oil sealing (5), O-ring I
(6), stop pin (7), O-ring II (8), interior stationary ring (9), seal chamber (10), snap ring II (11), interior rotating ring (12), O-ring III
(13), axle sleeve (14), interior throw-out collar (15), inner spring (16), spring base (17), interior hexagon concave-end locking screw (18), O-ring IV
(19), stationary seat (20), outer spring (21), outer throw-out collar (22), O-ring V (23), O-ring VI (24), asbestos washer (25), interior
Hexagonal cylindrical head screw III (26), hexagon socket cap head screw IV (27), outer press cover (28), snap ring III (29), outer stationary ring (30),
Reflecting paper (31), optical fibre displacement sensor (32), outer rotating ring (33), O-ring VII (34), hexagon socket cap head screw V (35),
Positioning sleeve (36), locking nut (37), bearing (38), the internal gland (1) pass through hexagon socket cap head screw II (3) and sealing
Chamber (10) is connected, and the oil sealing (5) is fixed on internal gland (1) by snap ring I (4), and the stop pin (7) is set to interior stationary ring
(9) between internal gland (1), on the right side of the interior stationary ring (9) and interior rotating ring (12) left contact, the snap ring (11) are fixed on bullet
Spring abutment (17), interior rotating ring (12) right side and interior throw-out collar (15) left contact, inner spring (16) left side and interior throw-out collar
(15) right contact, right side are contacted with spring base (17), the spring base (17) by interior hexagon concave-end locking screw (18) with
Axle sleeve (14) connection, the stationary seat (20) are connect by hexagon socket cap head screw IV (27) with seal chamber (10), described outer
It is contacted on the left of spring (21) with stationary seat (20), right side and outer throw-out collar (22) left contact, on the left of the outer stationary ring (30) with outside
Throw-out collar (22) right contact, right side and outer rotating ring (33) left contact, the reflecting paper (31) are attached on the right side of outer stationary ring (30), institute
It states positioning sleeve (36) to be fixed on axle sleeve (14) by hexagon socket cap head screw V (35), the axle sleeve (14) passes through locking screw
Female (37) are connect with bearing (38), and the outer press cover (28) is connected by hexagon socket cap head screw III (26) and seal chamber (10)
It connects, the optical fibre displacement sensor (32) is fixed on outer press cover (28), and left side is kept for 300~900 μm with reflecting paper (31)
Distance.
Placement snap ring II (4), a snap ring are respectively equipped on the internal gland (1), spring base (17) and stationary seat (20)
The annular groove of II (11) and snap ring III (29), the internal gland (1), interior stationary ring (9), interior rotating ring (12), axle sleeve (14), stationary seat
(20), placement O-ring I (6), O-ring II (8), an O-ring III are respectively equipped on outer stationary ring (30) and outer rotating ring (33)
(13), the annular groove of O-ring IV (19), O-ring V (23), O-ring VI (24) and O-ring VII (34).
Optical fibre displacement sensor described in the experimental provision (32) is arranged in the upper half of outer press cover (28), to guarantee close
Envelope medium will not leak at sensor；Initial time, fluid media (medium) is passed through in seal chamber (10), and bearing (38) is in quiet
Only state, optical fibre displacement sensor (32) measure under static pressure its sensor probe to the distance x1 between reflecting paper (31)；Work as bearing
(38) when starting rotation, under hydrodynamic effect, end face fluid film, operation are formed between outer stationary ring (30) and outer rotating ring (33)
After stabilization, optical fibre displacement sensor (32) measures under dynamic pressure its sensor probe to the distance x2 between reflecting paper (31)；X2 with
The difference DELTA x of x1 is the axial displacement of outer stationary ring (30), i.e., the end face fluid film between outer stationary ring (30) and outer rotating ring (33)
Thickness；The surveyed sealing ring of the device is outer stationary ring (30), is not contacted with bearing (38), vibrates band so as to avoid bearing (38)
The error come, thus more accurate ground measurement end surface current body film thickness；In addition, the device need to only be pasted instead on outer stationary ring (30)
Paper (31) are penetrated, do not have special requirement to integrated tooling, facilitates installation, disassembly, there is very strong practicability.
The device can also be arranged circumferentially four optical fibre displacement sensors along outer stationary ring, survey by comparing each sensor
The size between displacement is obtained, the deflection situation of outer stationary ring can be grasped respectively, in order to which the dynamic characteristic of external stationary ring carries out
Research.
Content described in this specification is only enumerating for the way of realization conceived to utility model, and the utility model should not
It is seen as limited by the concrete form of above-described embodiment, any replacement or imitation done according to the utility model belong to this reality
With novel claimed range.
Claims (3)
1. a kind of non-contact mechanical seal end face fluid film thickness measurement device, it is characterised in that: including interior stationary ring (9), sealing
Chamber (10), interior rotating ring (12), stationary seat (20), outer press cover (28), outer stationary ring (30), reflecting paper (31), optical fibre displacement sensor
(32), outer rotating ring (33) and bearing (38) etc., interior stationary ring (9) right side and interior rotating ring (12) left contact, the interior rotating ring
(12) right side and interior throw-out collar (15) left contact, on the left of the outer stationary ring (30) with outer throw-out collar (22) right contact, right side and outer
Rotating ring (33) left contact, the reflecting paper (31) are attached on the right side of outer stationary ring (30), and the optical fibre displacement sensor (32) is fixed
On outer press cover (28), sensor probe is kept at a distance from 300~900 μm with reflecting paper (31).
2. a kind of non-contact mechanical seal end face fluid film thickness measurement device according to claim 1, it is characterised in that:
The optical fibre displacement sensor (32) is arranged on outer press cover (28), and sensor probe and reflecting paper (31) keep 300~900
μm distance.
3. a kind of non-contact mechanical seal end face fluid film thickness measurement device according to claim 1, it is characterised in that:
Reflecting paper (31) are posted in the non-endface position of the outer stationary ring (30).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920472774.2U CN209459594U (en) | 2019-04-10 | 2019-04-10 | A kind of non-contact mechanical seal end face fluid film thickness measurement device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920472774.2U CN209459594U (en) | 2019-04-10 | 2019-04-10 | A kind of non-contact mechanical seal end face fluid film thickness measurement device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209459594U true CN209459594U (en) | 2019-10-01 |
Family
ID=68047829
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920472774.2U Expired - Fee Related CN209459594U (en) | 2019-04-10 | 2019-04-10 | A kind of non-contact mechanical seal end face fluid film thickness measurement device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209459594U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110686607A (en) * | 2019-10-17 | 2020-01-14 | 南京工程学院 | Device and method for measuring thickness of dry gas seal gas film of compressor |
-
2019
- 2019-04-10 CN CN201920472774.2U patent/CN209459594U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110686607A (en) * | 2019-10-17 | 2020-01-14 | 南京工程学院 | Device and method for measuring thickness of dry gas seal gas film of compressor |
| CN110686607B (en) * | 2019-10-17 | 2021-09-07 | 南京工程学院 | Device and method for measuring thickness of dry gas seal gas film of compressor |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191001 Termination date: 20200410 |