CN201955162U - Measuring system for temperature of friction surface with end face sealed - Google Patents
Measuring system for temperature of friction surface with end face sealed Download PDFInfo
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- CN201955162U CN201955162U CN2010206219166U CN201020621916U CN201955162U CN 201955162 U CN201955162 U CN 201955162U CN 2010206219166 U CN2010206219166 U CN 2010206219166U CN 201020621916 U CN201020621916 U CN 201020621916U CN 201955162 U CN201955162 U CN 201955162U
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- face
- temperature
- stationary ring
- temperature sensor
- blind hole
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Abstract
The utility model relates to a measuring system for temperature of a friction surface with an end face sealed. N phi 1 axial blind holes are uniformly machined in the circumferential direction on the same diameter of the back surface of a static ring sealing surface; the distances between the bottom surfaces of the blind holes and friction end faces of a moving ring and a static ring are respectively h1, h2 to hn mm; a thermocouple temperature sensor is embedded in the blind holes by insulating adhesive; and a signal wire of the thermocouple temperature sensor is led out along the inner hole wall of an end cover of sealed equipment. In the test process, the temperature measured at the n part is returned to a temperature-distance end face depth curve T=f(h), and the end face temperature, namely the end face friction temperature at h=0 part is obtained through an extrapolation method. As the holes are blind holes, the integrity of the sealed end face is ensured; the depth of the blind hole is not specially limited, the difficulty of machining the blind holes infinitely close to the friction end face and influence of thermal resistance to the measurement can be overcome, therefore, the measuring system has high measuring accuracy and good stability and is applicable to a field device for monitoring the temperature of the friction surface with the end face sealed and a test device for measuring the temperature of the friction surface with the end face sealed.
Description
Technical field
The utility model belongs to butt-end packing observation and control technology field, particularly relates to a kind of especially development of new butt-end packing or examine the measuring system of friction temperature between the seal face of test unit of its performance of face seals that is used for.
Background technology
Butt-end packing is that the moving equipment of machinery prevents to leak, energy savings, the critical function element that controls environment and pollute, is divided into plane and remodeling end face by sealing surface form difference.Because simple in structure and stable performance, butt-end packing is widely used on the device of electric power, boats and ships, Aero-Space, field of petrochemical industry.The connection status of butt-end packing in device as shown in Figure 1.The power of driving arrangement normally adopt end cap 1-4 that main shaft 1-1 passes sealed equipment with transmission of power to acting parts such as impellers.In order to protect main shaft not to be worn, on main shaft, be set with axle sleeve 1-2, adopt to be threaded the circumferential and axial degree of freedom of restriction axle sleeve between axle sleeve and the main shaft.Rotating seat 1-12 is by two circumferentially uniform on journal stirrup on it and axle sleeve right-hand member flange groove fit (or by circumferentially uniform 3 hexagon socket head cap screws thereon be anchored on the axle sleeve), the rotating seat left end is provided with rotating ring 1-7, and rotating ring adopts 4 groups of grooves and flange to cooperate with rotating seat.The end cap 1-4 of sealed equipment is fixed on the housing 1-9 of sealed equipment by bolt 1-3.Stationary ring 1-6 is arranged in the right side endoporus of end cap of sealed equipment.Main shaft and on axle sleeve pass stationary ring, stationary ring and rotating ring contact by end face and form friction pair.Make the flexible member 1-8 that rotating ring contacts with stationary ring when between rotating ring and rotating seat, being provided with in normality.Between the endoporus of axle sleeve right-hand member and main shaft, place O shape circle 1-11, guarantee the sealing between axle sleeve and the main shaft.Place rotating ring O shape circle 1-13 between axle sleeve and the rotating ring.Between the end cap of sealed equipment and stationary ring, place stationary ring O shape circle 1-5.Housing, end cap, stationary ring, rotating ring, rotating seat, main shaft and axle sleeve by sealed equipment surround an annular seal space 1-10.In the course of work, the stationary ring of butt-end packing is attached on the end cap that links to each other with the housing of sealed equipment, keeps relative static with housing, by the sealing between stationary ring O shape circle 1-5 realization stationary ring and end cap.Rotating ring is set on the axle sleeve, and two grooves that inserted on the axle sleeve right-hand member flange by the journal stirrup on the rotating seat of double as drive sleeve drive, and are connected in main shaft by the axle sleeve internal thread again, together turn round with main shaft.Rotating ring keeps relative static with axle sleeve, by the sealing between rotating ring O shape circle 1-13 realization rotating ring and the axle sleeve.Have relative motion between rotating ring and the stationary ring, have rubbing wear; The axial force that the flexible member 1-8 of wearing and tearing between rotating ring and the stationary ring after by rotating ring provides promotes the rotating ring reach and realizes compensation; Gap between rotating ring and the stationary ring is the passage that sealing medium leaks.
Butt-end packing generally can only be in design point stable operation.When condition of work or environmental aspect change, be in the maximal work state or, will cause the thickness wide variation as sealing in the running away from the design parameter scope, increase the weight of end face frictional wear or form injecting type to leak and cause seal failure.Rubbing wear between seal face and injecting type leak, and all can cause end-face friction moment of torsion and variation of temperature, and depart from normal value.Therefore, measure the abrasive end face temperature and help understanding and controlling the end face working condition.
In present known on-the-spot face seals and test unit, seal face temperature or radial temperature field are to be distributed in the identical blind hole of the degree of depth on the different radii by process one or several at the stationary ring back side, and thermocouple measurement obtains in wherein installing.The stationary ring temperature that the method for thermocouple temperature sensor records is buried in utilization underground in stationary ring, be that the difference of thermal resistance there are differences with the difference of the thermopair depth of burying; It is near more with sealing surfaces that thermocouple sensor is buried the place underground, and measured temperature is more near the end-face friction temperature.When the sensor place of burying underground and sealing surfaces distance was 0, the temperature that records of sensor was the friction temperature of dynamic and static ring in theory.Yet the thermocouple temperature sensor that is embedded in this moment in the stationary ring contacts with the rotating ring existence, makes measured temperature become the friction temperature between sensor and the rotating ring, has also destroyed the integrality of seal face simultaneously, has increased spillage risk.Because the retention time of end-face friction temperature has only a few tens of milliseconds even shorter, thereby want that by removing one of them end face, it also is infeasible adopting the measuring method of this end-face friction temperature of the direct perception of sensor.In order to obtain the sealing surface true temperature, require institute's open-blind pitch-row near more good more from end face, this has brought great difficulty to processing.
Summary of the invention
Problems such as the utility model is for the measuring accuracy that solves existing butt-end packing friction surface temperature and fiduciary level is poor, the nearly surperficial blind hole difficulty of processing propose a kind of measuring system of butt-end packing friction surface temperature.
The technical scheme that the utility model is taked for the technical matters that exists in the solution known technology is: stationary ring end face temperature measurement system is made up of thermocouple temperature sensor and stationary ring.The rotating ring that rotates should not be installed thermocouple temperature sensor, so thermocouple temperature sensor can only be installed on the stationary ring.In order not destroy the integrality of end face, the axial blind hole of n φ 1 of circumferential uniform processing on the same diameter in the stationary ring sealing surface back side, the blind hole bottom surface is respectively h apart from dynamic and static ring abrasive end face
1, h
2..., h
nMm (h
1, h
2..., h
nAll less than stationary ring thickness), adopt insulating gel that thermocouple temperature sensor is imbedded in the blind hole, the signal wire of thermocouple temperature sensor is drawn along the stationary seat inner hole wall.The temperature that n place in the process of the test is recorded returns into that temperature-apart from end face depth curve T=f (h), the end face temperature of utilizing extrapolation to ask for the h=0 place is the end-face friction temperature.
The utility model can also adopt following concrete technical measures to realize:
The number of the axial blind hole of described installation thermocouple temperature sensor is 3-5.
The axial blind hole of described installation thermocouple temperature sensor, its bottom surface dynamic and static ring abrasive end face of distance is 1-4mm.
Advantage and the good effect that the utlity model has are: because the blind hole of uniform and processing different depth on the same diameter of stationary ring is adopted in the end face temperature survey in the utility model, the thermocouple temperature sensor thermometric is installed, return into temperature-obtain the end face temperature apart from the method for end face depth curve, the processing difficulties of the blind hole that adopts single thermocouple temperature sensor measuring junction surface temperature must obtain abrasive end face and the influence of thermal resistance have been overcome, so measuring accuracy height, good stability is suitable for field device to the measurement to the frictional surface temperature of various butt-end packings of the monitoring of the frictional surface temperature of butt-end packing and test unit.Realized the scientific measurement of butt-end packing friction surface temperature.
Description of drawings
Fig. 1 represents the connection status of butt-end packing in device.
Fig. 2 represents that the blind hole of independent hard stationary ring offers degree of depth synoptic diagram.
Fig. 3 represents that the blind hole of independent hard stationary ring offers the orientation synoptic diagram.
Fig. 4 represents to offer degree of depth synoptic diagram with the blind hole of the hard stationary ring of corrugated tube.
Fig. 5 represents to offer the orientation synoptic diagram with the blind hole of the hard stationary ring of corrugated tube.
Fig. 6 represents the installment state of butt-end packing in device of independent hard stationary ring.
Fig. 7 represents the installment state of butt-end packing in device with corrugated tube hard stationary ring.
In the accompanying drawing 1,1-1 main shaft, 1-2 axle sleeve, the 1-3 bolt, the end cap of the sealed equipment of 1-4, the end cap of the sealed equipment of 1-5 and stationary ring sealing are enclosed with O shape, the 1-6 stationary ring, the 1-7 rotating ring, 1-8 flexible member, the sealed apparatus casing of 1-9, the 1-10 annular seal space, 1-11 axle sleeve endoporus and main shaft seal seal with O shape circle with O shape circle, 1-12 rotating seat, 1-13 axle sleeve and rotating ring.
In the accompanying drawing 2, the dark h of 2-1
1Blind hole, 2-2 stationary ring, 2-3 are dark h
3Blind hole.
In the accompanying drawing 3, the dark h of 3-1
1Blind hole 1, the dark h of 3-2
2 Blind hole 2, the dark h of 3-3
3Blind hole 3, the dark h of 3-4
4Blind hole 4.
In the accompanying drawing 4,4-1 thermocouple temperature sensor 1 is drawn lead, 4-2 corrugated tube base, and the 4-3 corrugated tube, 4-4 thermocouple temperature sensor 1, the 4-5 rotating ring, 4-6 thermocouple temperature sensor 3,4-7 thermocouple temperature sensor 3 is drawn lead.
In the accompanying drawing 5, the dark h of 5-1
1Blind hole 1, the dark h of 5-2
2 Blind hole 2, the dark h of 5-3
3Blind hole 3, the dark h of 5-4
4Blind hole 4.
In the accompanying drawing 6, the 6-1 main shaft, 6-2 thermocouple temperature sensor 1 is drawn lead, 6-3 thermocouple temperature sensor 1,6-4 bolt, the end cap of the sealed equipment of 6-5, the sealing of 6-6 plain cushion, the end cap seal of 6-7 stationary ring and sealed equipment is enclosed with O shape, the 6-8 stationary ring, the 6-9 rotating ring, the 6-10 flexible member, 6-11 rotating seat, 6-12 axle sleeve, 6-13 annular seal space housing, the 6-14 annular seal space, sealing is enclosed with O shape between 6-15 axle sleeve and main shaft, 6-16 rotating ring and shaft room sealing O shape circle, 6-17 thermocouple temperature sensor 3,6-18 thermocouple temperature sensor 3 is drawn lead.
In the accompanying drawing 7, the 7-1 main shaft, 7-2 thermocouple temperature sensor 1 is drawn lead, and 7-3 has the axle sleeve of rotating seat, the 7-4 coupling bolt, the end cap of the sealed equipment of 7-5, the end cap seal of 7-6 stationary ring and sealed equipment is enclosed with O shape, 7-7 stationary ring, 7-8 corrugated tube, 7-9 thermocouple temperature sensor 1, the 7-10 rotating ring, the 7-11 rotating ring, 7-12 rotating ring and sleeve sealing enclose with O shape, 7-13 annular seal space housing, the 7-14 annular seal space, 7-16 thermocouple temperature sensor 3 is enclosed in sealing between 7-15 axle sleeve and main shaft with O shape, the sealing of 7-17 plain cushion, 7-18 thermocouple temperature sensor 3 is drawn lead.
Embodiment
For further understanding content of the present utility model, characteristics and effect, exemplify following examples now, and conjunction with figs. is described in detail as follows:
Embodiment one: Fig. 6 is the installment state of butt-end packing in device of independent hard stationary ring.Main shaft 6-1 passes the end cap 6-5 of sealed equipment, stretches among the annular seal space housing 6-13 of device.The end cap 6-5 of sealed equipment adopts bolt 6-4 to be connected with annular seal space housing 6-13.The stationary ring 6-8 of butt-end packing is bearing in the right side endoporus of end cap 65 of sealed equipment, is realized the sealing between the end cap 6-5 of stationary ring 6-8 and sealed equipment by O shape circle 6-7.The other end of stationary ring 6-8 contacts with the seal face of rotating ring 6-9, and the other end of rotating ring 6-9 is by flexible member 6-10 supporting, to obtain certain end face unit load; Flexible member 6-10 is by the rotating seat 6-11 supporting of double as drive sleeve function; Journal stirrup on the rotating seat embeds in the Long Circle draw-in groove of axle sleeve 6-12 right-hand member, adopts between axle sleeve 6-12 and the main shaft 6-1 to be threaded, and O shape is enclosed 6-15 and sealed; Drive axle sleeve 6-12 rotation when main shaft 6-1 rotates, the draw-in groove on the axle sleeve drives rotating seat and rotates, and the groove that the flange of rotating seat left end inserts on the rotating ring drives rotating ring 6-9 rotation; Adopt O shape circle 6-16 sealing between rotating ring 6-9 and axle sleeve 6-12; End cap 6-5, stationary ring 6-8, rotating ring 6-9 and main shaft 6-1 by annular seal space housing 6-13, sealed equipment form annular seal space 6-14, the fluid that the moving equipment of interior installation tool is carried.
Stationary ring end face temperature measurement system is made up of thermocouple temperature sensor (this example adopts nickel chromium-nickel silicon thermocouple) and stationary ring; Stationary ring 6-8 is the axial blind hole of uniform 4 φ 1 circumferentially, the blind hole bottom surface is respectively 1mm apart from the abrasive end face of rotating ring 6-7, stationary ring 6-8,2mm, 3mm and 4mm, adopt insulating gel that thermocouple temperature sensor is imbedded in the blind hole, signal wire 6-2, the 6-18 of thermocouple temperature sensor (also have in two picture groups and fail to draw) draws along the end cap 6-5 inner hole wall of sealed equipment.The temperature that 4 places in the process of the test are recorded returns into that temperature-apart from end face depth curve T=f (h), the end face temperature of utilizing extrapolation to ask for the h=0 place is the end-face friction temperature.
Embodiment two: Fig. 7 is the installment state of butt-end packing in device of band corrugated tube hard stationary ring.Variation has taken place with the version of embodiment one different is butt-end packing, stationary ring 6-8 originally makes corrugated tube base 7-7, corrugated tube 7-8 and stationary ring 7-10 subassembly into, and rotating ring 6-9 originally, flexible member 6-10 and rotating seat 6-11 change rotating ring 7-11 into.The temperature measurement system of stationary ring end face still is made up of thermocouple temperature sensor and stationary ring; With the circumferential uniform diameter of axially offering to the stationary ring back side of 4 thermocouple temperature sensor 7-9,7-16 (also have among two figure and fail to draw) is in the blind hole of φ 1, the blind hole bottom surface is respectively 1mm apart from the abrasive end face of rotating ring 7-11, stationary ring 7-10,2mm, 3mm and 4mm, adopt insulating gel that thermocouple temperature sensor is imbedded in the blind hole, signal wire 7-2, the 7-18 of thermocouple temperature sensor (also have in two picture groups and fail to draw) draws along the end cap 7-5 inner hole wall of corrugated tube 7-8, corrugated tube base 77, sealed equipment.The temperature that 4 places in the process of the test are recorded returns into that temperature-apart from end face depth curve T=f (h), the end face temperature of utilizing extrapolation to ask for the h=0 place is the end-face friction temperature.
Claims (4)
1. the measuring system of a butt-end packing friction surface temperature is characterized in that: the axial blind hole of n φ 1 of circumferential uniform processing on the same diameter in the stationary ring sealing surface back side, the blind hole bottom surface is respectively h apart from dynamic and static ring abrasive end face
1, h
2..., h
nMm adopts insulating gel that thermocouple temperature sensor is fixed in the blind hole, and the signal wire of thermocouple temperature sensor is drawn along the end cap inner hole wall of sealed equipment.
2. the measuring system of butt-end packing friction surface temperature as claimed in claim 1 is characterized in that: stationary ring end face temperature measurement system is made up of thermocouple temperature sensor and stationary ring.
3. the measuring system of butt-end packing friction surface temperature as claimed in claim 1 is characterized in that: the number of offering the axial blind hole that thermocouple temperature sensor is installed on the stationary ring is 3-5.
4. the measuring system of butt-end packing friction surface temperature as claimed in claim 1 is characterized in that: the axial blind hole of the installation thermocouple temperature sensor of offering on the stationary ring, its bottom surface dynamic and static ring abrasive end face of distance is 1-4mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206219166U CN201955162U (en) | 2010-11-24 | 2010-11-24 | Measuring system for temperature of friction surface with end face sealed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206219166U CN201955162U (en) | 2010-11-24 | 2010-11-24 | Measuring system for temperature of friction surface with end face sealed |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201955162U true CN201955162U (en) | 2011-08-31 |
Family
ID=44499270
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206219166U Expired - Lifetime CN201955162U (en) | 2010-11-24 | 2010-11-24 | Measuring system for temperature of friction surface with end face sealed |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201955162U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102128692A (en) * | 2010-11-24 | 2011-07-20 | 南京林业大学 | End-face-sealed friction surface temperature measuring method |
| CN105115453A (en) * | 2015-04-27 | 2015-12-02 | 南京林业大学 | Device and method for on-line measurement of abrasion loss of mechanical sealing end face based on technology of digital B-ultrasound imaging |
-
2010
- 2010-11-24 CN CN2010206219166U patent/CN201955162U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102128692A (en) * | 2010-11-24 | 2011-07-20 | 南京林业大学 | End-face-sealed friction surface temperature measuring method |
| CN105115453A (en) * | 2015-04-27 | 2015-12-02 | 南京林业大学 | Device and method for on-line measurement of abrasion loss of mechanical sealing end face based on technology of digital B-ultrasound imaging |
| CN105115453B (en) * | 2015-04-27 | 2017-09-05 | 南京林业大学 | Mechanical seal end surface wear extent on-line measurement device and method based on digital B ultrasound imaging technique |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20110831 Effective date of abandoning: 20130306 |
|
| RGAV | Abandon patent right to avoid regrant |