CN106323186A - System for measuring micro-displacement of sealing surface moving ring - Google Patents
System for measuring micro-displacement of sealing surface moving ring Download PDFInfo
- Publication number
- CN106323186A CN106323186A CN201610686511.2A CN201610686511A CN106323186A CN 106323186 A CN106323186 A CN 106323186A CN 201610686511 A CN201610686511 A CN 201610686511A CN 106323186 A CN106323186 A CN 106323186A
- Authority
- CN
- China
- Prior art keywords
- high temperature
- optical fiber
- sealing surface
- rotating ring
- displacement
- 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.)
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/14—Measuring arrangements characterised by the use of optical techniques for measuring distance or clearance between spaced objects or spaced apertures
Abstract
The invention discloses a system for measuring a micro-displacement of a sealing surface moving ring, belonging to the displacement precision measurement technology field. The system solves a problem that a mechanical sealing structure is small in space, high in temperature and complex in environment and is hard to accurately monitor displacement of a sealing surface moving ring. The system of the invention comprises a static ring, a moving ring, a field measurement device and a safe area device; the field measurement device comprises a lower fixture arranged on the static ring, an upper fixture arranged on the lower fixture, an armored high temperature optical fiber probe arranged inside the upper fixture and the lower fixture, an armored high temperature optical fiber connected to the armored high temperature optical fiber probe and a flange arranged on the moving ring; the safe area device comprises a light source, an optical circulator, a spectrometer and a signal processing device; the output terminal of the light source is connected to a 1 port of the optical circulator; the armored high temperature optical fiber is connected to a 2 port of an optical circulator; the input terminal of the spectrometer is connected to a 3 port of the optical circulator; and the output terminal of the spectrometer is connected to the input terminal of the signal processing device. The system for measuring micrometric displacement of the sealing surface moving ring is used for measuring the moving ring micrometric displacement.
Description
Technical field
A kind of system measuring sealing surface rotating ring micrometric displacement, is used for measuring sealing surface rotating ring micrometric displacement, belongs to displacement accurate
Field of measuring technique.
Background technology
Since mechanical sealing technology invention in 1855, along with the further investigation for sealing theory and application thereof, machinery is close
The application being enclosed in industrial circle is more and more wider.The sealing of rotary shaft axle head generally uses hydrodynamic mechanical seal,
Add liquid or gas working dielectric between rotating ring and stationary ring, due to hydrostatic pressure and dynamic pressure effect, formed between sealing ring
There is liquid or the gas membrane of certain rigidity, make two sealing surfaces can operate with noncontact.Simultaneously because thickness is the least, can limit
Fluid processed leaks, and plays sealing function.
The performance sealed and stability, be directly connected to the properly functioning of plant equipment.Once sealing property declines even
Losing efficacy, and may cause the leakage of working media or lubricating fluid, the most then affect plant equipment service behaviour, heavy then generation is significantly
Abrasion, make shortened equipment life or even be damaged.But, rotating ring can the vibrated or shadow of rotating speed in running
Ring, produce displacement in the axial direction so that diaphragm seal thickness changes.Thickness is too small, and sealing surface wear and power consumption all can increase；
Thickness is excessive, and the leakage of working media can be caused again to become big.Therefore, the monitoring to sealing surface rotating ring micrometric displacement then seems the heaviest
Want.
Conventional displacement transducer mainly has: inductive displacement transducer, eddy current displacement sensor, capacitive displacement pass
Sensor, grating displacement transducer.Inductive displacement transducer is tangent displacement sensor, owing to sealing system itself has one
Fixed vibration, this will have a strong impact on the precision of contact measurement, and in the case of having vibration, inductance response time is extremely difficult to
The requirement measured；Electric vortex type displacement sensor is non-cpntact measurement, more accurate than contact type measurement, but its use is by a lot
Factor limits, and its target must be metallic conductor, and easily disturbed by environment stray magnetic field, needs shielding measure；
Grating displacement transducer and laser displacement sensor are non-contact measurement, and have higher certainty of measurement, but due to close
The particularity of seal structure, does not has enough installing spaces, it is difficult to meet the installation requirement of this sensor.
Summary of the invention
The present invention is directed to above-mentioned weak point and provide a kind of system measuring sealing surface rotating ring micrometric displacement, solve existing skill
In art, mechanical seal structure space is less, temperature is high, circumstance complication, it is difficult to asking of accurate monitoring sealing surface rotating ring micrometric displacement
Topic.
To achieve these goals, the technical solution used in the present invention is:
A kind of system measuring sealing surface rotating ring micrometric displacement, including stationary ring and rotating ring, it is characterised in that: include in-site measurement
Device and place of safety device；
Described field measurement apparatus includes the lower clamp being arranged on stationary ring, be arranged on lower clamp upper fixture, setting
The armouring high temperature optical fiber that armouring high temperature optical fiber probe within upper fixture with lower clamp is connected with armouring high temperature optical fiber probe
With the flange being arranged on rotating ring；
Described place of safety device includes light source, optical circulator, spectrogrph and signal processing apparatus, the outfan of described light source
Being connected with 1 port of optical circulator, armouring high temperature optical fiber is connected with 2 ports of optical circulator, the input of spectrogrph with
3 ports of optical circulator are connected, and the outfan of spectrogrph is connected with the input of signal processing apparatus.
Further, described armouring high temperature optical fiber probe includes GRIN Lens, and one end of GRIN Lens is plated set anti-
Penetrate film, the high temperature optical fiber that the other end connects, corrugated stainless steel tubing sheathed on high temperature optical fiber afterbody, GRIN Lens, reflection
Rustless steel sleeve pipe sheathed on the corrugated stainless steel tubing of film and GRIN Lens one end.
Further, described GRIN Lens is with high temperature optical fiber, GRIN Lens, reflectance coating and GRIN Lens one end not
High temperature corrosion-resisting binding agent is used to carry out bonding between rust corrugated steel pipe and rustless steel sleeve pipe.
Further, described light source sends wave-length coverage is the light beam that visible ray arrives middle-infrared band.
Further, it is tenon structure between described armouring high temperature optical fiber probe and upper fixture and lower clamp.
Further, the end face of described armouring high temperature optical fiber probe 3 uses evaporation or magnetron sputtering mode to plate and set reflectance coating.
Further, the sensitive surface of described flange has carried out polishing or coating film treatment, the surface reflectivity after polishing or plated film
Not less than 75%.
Further, the reflectance of described reflectance coating is 7-10%.
Further, the distance between armouring high temperature optical fiber probe and the flange of described reflectance coating end is 5～20mm.
Further, the mode signal output of described signal processing apparatus be simulation, USB, RS-232, RS-485, WLAN,
One or more in WIFI, bluetooth approach.
Compared with prior art, it is an advantage of the current invention that:
One, the present invention uses interference of light as measuring principle, and on-the-spot sensing unit structures is simple, size is little and has
High displacement measurement sensitivity；
Two, the present invention uses optical signal as information transmission and sensing carrier, and on-the-spot sensing unit does not contains electronic component,
There is electromagnetism interference, radioprotective, the features such as security performance is strong, it is adaptable to the industrial environment of various complexity；
Three, the input and output of optical signal share an optical fiber, simplify system structure, reduce system cost；
Four, on-the-spot sensing unit the most in addition armouring, it is possible to the complicated industrial environments such as reply high temperature, burn into are shockproof；
Five, armouring high temperature optical fiber probe employs GRIN Lens and reflectance coating, improves the collection efficiency to spatial light
With the signal to noise ratio of interference signal, enhance the measurement sensitivity of system；
Six, flange is annular, can detect the displacement of every bit on rotating ring circumference；
Seven, armouring high temperature optical fiber probe have employed tenon structure with lower clamp and upper fixture, adds the stability of probe,
Reduce the extraneous vibration impact on measuring.
Accompanying drawing explanation
Fig. 1 is the profile of field measurement apparatus of the present invention；
Fig. 2 is the side view of field measurement apparatus of the present invention；
Fig. 3 is the schematic block diagram of place of safety of the present invention device；
Fig. 4 is the profile of armouring high temperature optical fiber of the present invention probe；
Reference is: 1, stationary ring, 2, rotating ring, 3, armouring high temperature optical fiber probe, 4, upper fixture, 5, lower clamp, 6, flange,
7, light source, 8, circulator, 9, spectrogrph, 10, signal processing apparatus, 11, GRIN Lens, 12, reflectance coating, 13, high temperature optical fiber,
14, corrugated stainless steel tubing, 15, rustless steel sleeve pipe, 16, armouring high temperature optical fiber.
Detailed description of the invention
With embodiment, the present invention is made explanation below in conjunction with the accompanying drawings that walk.
A kind of system measuring sealing surface rotating ring micrometric displacement, including stationary ring 1 and rotating ring 2, including field measurement apparatus and peace
Whole district's device；
Described field measurement apparatus include the lower clamp 5 being arranged on stationary ring 1, the upper fixture 4 being arranged on lower clamp 5,
It is arranged on the armourings that fixture 4 is connected with armouring high temperature optical fiber probe 3 with the armouring high temperature optical fiber probe 3 within lower clamp 5
High temperature optical fiber 16 and the flange 6 being arranged on rotating ring 2；Between described armouring high temperature optical fiber probe 3 and upper fixture 4 and lower clamp 5
For tenon structure；The sensitive surface of described flange 6 has carried out polishing or coating film treatment, and the surface reflectivity after polishing or plated film is the least
In 75%.
Described place of safety device includes sending the light source 7 of the light beam that wave-length coverage is visible ray or middle-infrared band, the ring of light
Row device 8, spectrogrph 9 and signal processing apparatus 10, the outfan of described light source 7 is connected with 1 port of optical circulator 8, armouring
High temperature optical fiber 16 is connected with 2 ports of optical circulator 16, and the input of spectrogrph 9 is connected with 3 ports of optical circulator 8,
The outfan of spectrogrph 9 is connected with the input of signal processing apparatus 10.
Described armouring high temperature optical fiber probe 3 includes GRIN Lens 11, and one end of GRIN Lens 11 is plated the reflection set
Film 12, the high temperature optical fiber 13 that the other end connects, corrugated stainless steel tubing 14 sheathed on high temperature optical fiber 13 afterbody, GRIN Lens
11, rustless steel sleeve pipe 15 sheathed on the corrugated stainless steel tubing 14 of reflectance coating 12 and GRIN Lens 11 one end.Described self-focusing
The corrugated stainless steel tubing 14 of lens 11 and high temperature optical fiber 13, GRIN Lens 11, reflectance coating 12 and GRIN Lens 11 one end with
Using high temperature corrosion-resisting binding agent to carry out bonding between rustless steel sleeve pipe 15, the reflectance of described reflectance coating 12 is 7-10%.
The spectral detection scope of described spectrogrph 9 is mated with the wave-length coverage of described light source 7.
Distance between armouring high temperature optical fiber probe 3 and the flange 6 of described reflectance coating 12 end is 5～20mm.
The mode signal output of described signal processing apparatus 10 is simulation, USB, RS-232, RS-485, WLAN, WIFI, indigo plant
One or more in tooth mode.
The operation principle of this method is: the light beam that light source 7 sends is through 1 port of optical circulator 8, and light beam is gone in ring by light again
1 port of device 8 is gone out through 2 ports of optical circulator 8, and after armouring high temperature optical fiber 16, a part of light beam is by armouring high temperature
The reflectance coating of fibre-optical probe 3 reflects, the light beam of reflection 2 ports by armouring high temperature optical fiber 8 reflected light circulator 8,
Another part arrives the reflecting surface of flange 6 and reflects, and it is high that the light beam of flange 6 reflection is put into armouring after self-aggregation lens 11
Temperature optical fiber 16, then arrives 2 ports of optical circulator 8, and the interference signal that two reflection light beams produce is through 2 ends of optical circulator 8
After Kou, then through optical circulator 83 ports arrive spectrogrphs 9 detect, spectrogrph 9 output signal is through signal processing apparatus
10 are calculated the distance between rotating ring 2 and stationary ring 1.There is small relative displacement in the distance between rotating ring 2 and stationary ring 1
Time, also will produce displacement between the armored fiber optic probe 3 and the flange 6 that are fixed on stationary ring 1 so that detect through spectrogrph 9
Interference light signal changes, and is calculated the relative shift of rotating ring 2 and stationary ring 1 by signal processing apparatus 10, and with simulation
The form output of amount or digital quantity, meets the digitized measurement of equipment and the needs of control.
The present invention utilizes the interference signal that laser produces with flange surface both at armouring high temperature optical fiber probe, obtains rotating ring
Displacement, there is the features such as simple in construction, size electromagnetic interference little, highly sensitive, anti-, radioprotective, it is possible in various complexity
Industrial environment in reliable and stable work.
Claims (10)
1. measure a system for sealing surface rotating ring micrometric displacement, it is characterized in that including stationary ring (1) and rotating ring (2): include scene
Measurement apparatus and place of safety device；
Described field measurement apparatus includes the lower clamp (5) being arranged on stationary ring (1), the upper fixture being arranged on lower clamp (5)
(4) armouring high temperature optical fiber probe (3) within fixture (4) and lower clamp (5) and armouring high temperature optical fiber probe (3), it are arranged on
The armouring high temperature optical fiber (16) being connected and the flange (6) being arranged on rotating ring (2)；
Described place of safety device includes light source (7), optical circulator (8), spectrogrph (9) and signal processing apparatus (10), described light
The outfan in source (7) is connected with 1 port of optical circulator (8), armouring high temperature optical fiber (16) and 2 ports of optical circulator (16)
Being connected, the input of spectrogrph (9) is connected with 3 ports of optical circulator (8), at the outfan of spectrogrph (9) and signal
The input of reason device (10) is connected.
A kind of system measuring sealing surface rotating ring micrometric displacement the most according to claim 1, it is characterised in that: described armouring is high
Temperature fibre-optical probe (3) includes GRIN Lens (11), and one end of GRIN Lens (11) is plated the reflectance coating (12) set, the other end
The high temperature optical fiber (13) of upper connection, corrugated stainless steel tubing (14) sheathed on high temperature optical fiber (13) afterbody, GRIN Lens (11),
The upper sheathed rustless steel sleeve pipe (15) of the corrugated stainless steel tubing (14) of reflectance coating (12) and GRIN Lens (11) one end.
A kind of system measuring sealing surface rotating ring micrometric displacement the most according to claim 1, it is characterised in that: described self-focusing
Lens (11) and high temperature optical fiber (13), GRIN Lens (11), reflectance coating (12) and the rustless steel of GRIN Lens (11) one end
High temperature corrosion-resisting binding agent is used to carry out bonding between corrugated tube (14) with rustless steel sleeve pipe (15).
A kind of system measuring sealing surface rotating ring micrometric displacement the most according to claim 1, is characterised by, described light source (7)
Sending wave-length coverage is the light beam that visible ray arrives middle-infrared band.
A kind of system measuring sealing surface rotating ring micrometric displacement the most according to claim 1, is characterised by, described armouring high temperature
It is tenon structure between fibre-optical probe (3) and upper fixture (4) and lower clamp (5).
A kind of system measuring sealing surface rotating ring micrometric displacement the most according to claim 3, is characterised by: described armouring high temperature
The end face of fibre-optical probe (3) uses evaporation or magnetron sputtering mode to plate and set reflectance coating (12).
A kind of system measuring sealing surface rotating ring micrometric displacement the most according to claim 1, it is characterised in that: described flange
(6) being ring-shaped, sensitive surface has carried out polishing or coating film treatment, and the surface reflectivity after polishing or plated film is not less than 75%.
A kind of system measuring sealing surface rotating ring micrometric displacement the most according to claim 2, it is characterised in that: described reflectance coating
(12) reflectance is 7-10%.
A kind of system measuring sealing surface rotating ring micrometric displacement the most according to claim 2, it is characterised in that: described reflectance coating
(12) distance between armouring high temperature optical fiber probe (3) and the flange (6) held is 5～20mm.
A kind of system measuring sealing surface rotating ring micrometric displacement the most according to claim 1, it is characterised in that: described signal
The mode signal output of processing means (10) is the one in simulation, USB, RS-232, RS-485, WLAN, WIFI, bluetooth approach
Or it is multiple.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610686511.2A CN106323186B (en) | 2016-08-18 | 2016-08-18 | A kind of system measuring sealing surface rotating ring micro-displacement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610686511.2A CN106323186B (en) | 2016-08-18 | 2016-08-18 | A kind of system measuring sealing surface rotating ring micro-displacement |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106323186A true CN106323186A (en) | 2017-01-11 |
| CN106323186B CN106323186B (en) | 2019-06-07 |
Family
ID=57743545
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610686511.2A Active CN106323186B (en) | 2016-08-18 | 2016-08-18 | A kind of system measuring sealing surface rotating ring micro-displacement |
Country Status (1)
| Country | Link |
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| CN (1) | CN106323186B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107389144A (en) * | 2017-07-27 | 2017-11-24 | 电子科技大学 | A kind of downhole fluid flow-measuring method and flowmeter |
| CN108007484A (en) * | 2017-12-27 | 2018-05-08 | 深圳市光子传感技术有限公司 | A kind of package system and its method for packing of novel optical fiber sensor |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107389144A (en) * | 2017-07-27 | 2017-11-24 | 电子科技大学 | A kind of downhole fluid flow-measuring method and flowmeter |
| CN108007484A (en) * | 2017-12-27 | 2018-05-08 | 深圳市光子传感技术有限公司 | A kind of package system and its method for packing of novel optical fiber sensor |
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| Publication number | Publication date |
|---|---|
| CN106323186B (en) | 2019-06-07 |
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