CN203643093U - Testing apparatus for seal performance of liquid lubrication mechanical seal - Google Patents
Testing apparatus for seal performance of liquid lubrication mechanical seal Download PDFInfo
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- CN203643093U CN203643093U CN201320489009.4U CN201320489009U CN203643093U CN 203643093 U CN203643093 U CN 203643093U CN 201320489009 U CN201320489009 U CN 201320489009U CN 203643093 U CN203643093 U CN 203643093U
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Abstract
A testing apparatus for seal performance of liquid lubrication mechanical seal includes a sealing device, a drive device, an auxiliary device and a testing device. The sealing device includes a sealing chamber having a sealing liquid inlet and a sealing liquid outlet; a moving assembly mounted in the sealing chamber; and a static assembly mounted in the sealing chamber. The drive device includes a support, a motor, a synchronous pulley, a synchronous belt, a rotating shaft and a bearing housing. The testing device includes a drive rod, a pressure transducer, a thermocouple sensor, an electronic balance and a computer. The testing apparatus for seal performance of liquid lubrication mechanical seal can automatically collect all kinds of seal transverse plane friction torques, seal transverse plane temperature rises and seal transverse plane leakage rate accurately and conveniently. The testing apparatus for seal performance of liquid lubrication mechanical seal is low in vibration and noise, and compact in structure. It is convenient to dismounting and assembling. The testing apparatus is convenient to mount, dismount and fold in half. The testing apparatus has a three-fulcrum structure, and overcomes a disadvantage of large vibration of the experiment table support of a traditional two -fulcrum seal experiment apparatus or a weighing cantilever beam seal experiment apparatus in a high speed running condition.
Description
Technical field
The utility model relates to a kind of proving installation of liquid lubrication mechanical seal sealing property.
Background technology
In at present known mechanical seal experimental provision, mostly be two fulcrums or claim beam type sealing experimental facility, rotary main shaft and motor utilize shaft coupling transferring power, if Disalignment, under High Rotation Speed, axle head swing and vibration are very large, and this will have a strong impact on the Measurement accuracy of mechanical seal sealing property parameter; Also having traditional packoff bearing housing is monolithic construction, needs casting technique processing, wastes time and energy.The measurement of traditional mechanical seal friction torque adopts mounting torque instrument between motor and bearing housing to obtain more, the packet of test has contained the viscous resistance of friction torque and lubricating oil and the between centers of bearing housing inner bearing, though this value can be eliminated by Experimental Calibration part, but increase on the one hand the workload of test, the more important thing is in long-time process of the test, bearing housing temperature rise, causes rotating shaft expanded by heating, and its value is difficult to quantitative estimation.Therefore existing mechanical seal test macro is subject to the impact of bearing housing too large, can not Accurate Assessment seal friction performance, especially start the non-contact mechanical seal of baric flow groove for end face, the order of magnitude of itself friction torque is smaller, if there is the impact of the above-mentioned so many X factor that is difficult to evaluation, its frictional behaviour is difficult to Accurate Assessment.
Summary of the invention
In order to solve, conventional seals experimental provision vibrates greatly in the time running up, centering is difficult, seal face friction torque is difficult to the problems such as Measurement accuracy, the utility model provides a kind of measurement friction torque method novel, accurate, conveniently adjusted axle rotating speed and seal chamber pressure, vibrate little, centering, installation, dismounting are simple, automatically gather the device of the liquid lubrication mechanical seal sealing property of sealing property parameter.
The device of a kind of liquid lubrication mechanical seal sealing property described in the utility model, it is characterized in that: comprise packoff, drive unit, servicing unit, proving installation, described packoff comprises with the seal chamber of sealing liquid import and export, is arranged on the moving assembly in seal chamber, quiet assembly, described moving assembly comprises rotating seat, experiment moving sealing ring, auxiliary seal rotating ring, and described experiment moving sealing ring, auxiliary seal rotating ring are arranged on the axle sleeve of rotating shaft; Described quiet assembly comprises stationary ring end cap, auxiliary stationary ring end cap, experiment stationary seal ring and auxiliary seal stationary ring, described experiment stationary ring, described auxiliary seal stationary ring are fixed with stationary ring end cap and the auxiliary stationary ring end cap at seal chamber two ends respectively, and the end contact face of the end contact face of described experiment stationary seal ring and described experiment moving sealing ring, described auxiliary seal stationary ring and described auxiliary seal rotating ring is all positioned at described seal chamber inside; Described stationary ring end cap and described auxiliary stationary ring end cap are separately fixed on clutch shaft bearing seat, the second bearing seat; On described experiment stationary seal ring, have and connect leak and thermometer hole;
Described drive unit comprises support, motor, synchronous pulley, Timing Belt, rotating shaft and bearing housing, and described motor is fixed on support, and the output shaft of described motor is connected with the rotating shaft that runs through bearing housing with Timing Belt by synchronous pulley; Described motor is connected with computing machine by motor inverter;
Described servicing unit comprises compressor, high-voltage tube, fluid reservoir and ebullator, and described compressor is connected with fluid reservoir by high-voltage tube, and described fluid reservoir is imported and exported by high-voltage tube and ebullator and is connected with the import and export of described seal chamber;
Described proving installation comprises transmission rod, pressure transducer, thermocouple sensor, electronic balance and above-mentioned computing machine, and described transmission rod one end is fixed on seal chamber, the other end contacts with the pressure transducer that is positioned at described seal chamber below; Described thermocouple sensor is positioned at the thermometer hole place of described experiment stationary ring; Described pressure transducer, thermocouple sensor and electronic balance is connected with described computing machine respectively.
The hermetically-sealed construction of the moving assembly of two covers and quiet assembly composition is installed in described seal chamber.
The second bearing seat and the 3rd bearing seat with bearing installed at the two ends of described bearing housing, and described rotating shaft runs through on the bearing that is arranged on the second bearing seat and the 3rd bearing seat by the second described bearing.
The thermometer hole at the described experiment stationary seal ring back side is extremely from seal face 1mm.
Described seal chamber is connected with stationary ring end cover and auxiliary stationary ring end cover by bolt, forms detachable type structure.
Described clutch shaft bearing seat and the second described bearing seat, the 3rd described bearing seat are fixed by screws on two articles of horizontal slide rails, and the horizontal middle spindle of seal chamber overlaps with the central shaft of described rotating shaft.
On described high-voltage tube, controlling valve is set.
Utilize device described in the utility model to proceed as follows:
1) in fluid reservoir, add sealing medium, start compressor for being depressed into sealing load, start ebullator to realize the circulation of sealing medium in annular seal space, sealed medium pressure size is controlled by compressor;
2) measuring junction surface temperature: starter motor, the moving assembly rotation of driven by motor, in instrument connection on experiment stationary seal ring, insert thermocouple sensor, the temperature signal of Real-Time Monitoring is transferred to computing machine by thermocouple sensor, and computing machine carries out analyzing and processing to the temperature signal receiving;
3) measure slip: under mechanical seal end surface differential pressure action, sealing medium will leak to the external world by end face, the sealing medium utilization leaking out is taken over and collected rear introducing in the container of measuring, and be placed on the electronic analytical balance of ten thousand/gram precision, electronic analytical balance adopts data line and computing machine to join, every set time reading out data, weigh the quality of liquid in set time inner pressurd vessel, can obtain slip;
4) measure friction torque: seal chamber is connected with transmission rod, the transmission rod other end contacts with pressure transducer is vertical, when test, the friction torque of mechanical seal end surface will balance each other with the moment of the measured power generation of pressure transducer, obtain the distance between pressure transducer and rotating shaft, can obtain the friction torque (M) of a set of hermetically-sealed construction, that is:
M=0.5×F×R
Wherein, M represents friction torque; F represents the pressure of transmission rod to pressure transducer; R represents the vertical range of seal chamber central shaft and power sensor, adopts the identical hermetically-sealed construction of two covers when 0.5 representative test.
Principle of work: motor is bolted on support, between motor and rotating shaft, be connected by synchronous pulley and Timing Belt, the rotating speed of motor can pass through computing machine or manual adjustments, the hermetically-sealed construction of moving assembly that two covers are identical and quiet assembly composition is housed in seal chamber, adopt this arrangement axial force on the one hand can self-poise annular seal space, on the other hand, in process of the test, data measured is averaged, and can record more accurately sealing property; Seal face slip, end face temperature, the end-face friction moment of torsion of measuring in experiment is the sealing property parameter of sealing; Before experiment, first in fluid reservoir, add sealing medium, then start compressor for being depressed into sealing load, start ebullator to realize the circulation of sealing medium in annular seal space, the large I of sealed medium pressure is controlled by compressor; Starter motor when experiment, motor drives rotating shaft rotation by belt and belt pulley, under mechanical seal end surface differential pressure action, sealing medium will leak to the external world by end face, its leakage flows into and is placed in the container of electronic analytical balance after collecting by conduit, can obtain seal leakage rate by the quality that weighs liquid in set time inner pressurd vessel; The temperature rise of experimental side seal face can be passed through measuring in thermocouple sensor loading test stationary ring hole; In the time of the rotation of moving assembly, the moment of friction between seal face will balance each other with the suffered moment in transmission rod outer end, and what the power that pressure transducer records and the product of the arm of force were two mechanical seals closes moment of friction (M=F × R); The data that pressure transducer, thermocouple sensor and electronic balance record can obtain the sealing property parameter of test machines sealing after processing by computer acquisition.
The utility model beneficial effect is: slip, end face temperature and friction torque that 1) this experimental provision can all kinds of liquid lubrication mechanical end face seals of on-line measurement; 2) conventional seals experimental provision can not accurately be measured friction torque, and this experimental provision adopts a kind of method of new measurement friction torque, can obtain more accurately the friction torque between seal face; 3) in this experimental provision, pressure and rotating speed are conveniently adjusted, can carry out contacting mechanical seal under different operating operating mode and the experimental study of non-contact mechanical seal; 4) this experimental provision adopts three fulcrum type structures, has overcome traditional two fulcrums or has claimed beam type sealing experimental facility experimental stand in the time running up to vibrate large shortcoming; 5) this experimental provision motor is connected with Timing Belt by synchronous pulley with axle, has overcome conventional seals device motor and has been connected by shaft coupling with axle, the problem of centering difficulty.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the partial enlarged drawing of Fig. 1.
Fig. 3 is the partial enlarged drawing of Fig. 2.
Fig. 4 is the left view of liquid machine sealing experimental facility.
Fig. 5 is that (M represents friction torque to friction torque test philosophy figure; F represents the pressure of transmission rod to pressure transducer; R represents the vertical range of seal chamber central shaft and power sensor).
Embodiment
Further illustrate the utility model below in conjunction with accompanying drawing
With reference to accompanying drawing:
The device of embodiment 1 a kind of liquid lubrication mechanical seal sealing property described in the utility model, comprise packoff 1, drive unit 2, servicing unit 3, proving installation 4, described packoff 1 comprises with the seal chamber 11 of sealing liquid import and export, is arranged on moving assembly 12, quiet assembly 13 in seal chamber, described moving assembly 12 comprises rotating seat 121, experiment moving sealing ring 122, auxiliary seal rotating ring 123, on described experiment moving sealing ring 122, the axle sleeve 251 that auxiliary seal rotating ring 123 is arranged on rotating shaft 25; Described quiet assembly 13 comprises stationary ring end cap 131, auxiliary stationary ring end cap 132, experiment stationary seal ring 133 and auxiliary seal stationary ring 134, described experiment stationary seal ring 133, described auxiliary seal stationary ring 134 are fixing with the stationary ring end cap 131 at seal chamber 11 two ends and auxiliary stationary ring end cap 132 respectively, and the surface of contact of described experiment stationary seal ring 133 and the end face of described experiment moving sealing ring 122, described auxiliary seal stationary ring 134 are all positioned at described seal chamber 11 inside with the surface of contact of the end face of described auxiliary seal rotating ring 123; Described stationary ring end cap 131 and described auxiliary stationary ring end cap 132 are separately fixed at clutch shaft bearing seat 14, the second bearing seat 261; On described experiment stationary seal ring 133, have and connect leak 1311 and thermometer hole 1312;
Described drive unit 2 comprises support 21, motor 22, synchronous pulley 23, Timing Belt 24, rotating shaft 25 and bearing housing 26, described motor 22 is fixed on support 21, and the output shaft of described motor 22 is connected with the rotating shaft 25 that runs through bearing housing 26 with Timing Belt 24 by synchronous pulley 23; Described motor 22 is connected with computing machine 43 by motor inverter;
Described servicing unit 3 comprises compressor 31, high-voltage tube 32, fluid reservoir 33 and ebullator 34, described compressor 31 is connected with fluid reservoir 33 by high-voltage tube 32, and described fluid reservoir 33 is imported and exported by high-voltage tube 32 and ebullator 34 and is connected with the import and export of described seal chamber 11;
Described proving installation 4 comprises transmission rod 41, pressure transducer 42, thermocouple sensor, electronic balance and above-mentioned computing machine 43, and described transmission rod 41 one end are fixed on seal chamber 11, the other end contacts with the pressure transducer 42 that is positioned at described seal chamber 11 belows; Described thermocouple sensor is positioned at thermometer hole 1232 places of described experiment stationary seal ring 123; Described pressure transducer 42, thermocouple sensor and electronic balance is connected with described computing machine 43 respectively.
The hermetically-sealed construction that the interior installation moving assembly 12 of two covers of described seal chamber 11 and quiet assembly 13 form.
The second bearing seat 261 and the 3rd bearing seat 262 with bearing installed at the two ends of described bearing housing 26, and described rotating shaft 25 runs through on the bearing that is arranged on the second bearing seat 261 and the 3rd bearing seat 262.
The thermometer hole 1331 at described experiment stationary seal ring 133 back sides is to from seal face 1mm.
Described seal chamber 11 is connected with experiment stationary seal ring 133 end covers and auxiliary seal stationary ring 134 end covers by bolt, forms detachable type structure.
Described clutch shaft bearing seat 14 is fixed by screws on two articles of horizontal slide rails 27 with the second described bearing seat 261, the 3rd described bearing seat 262, and the horizontal middle spindle of seal chamber 11 overlaps with the central shaft of described rotating shaft 25.
On described high-voltage tube 32, controlling valve 321 is set.
Principle of work: motor 22 is bolted on support 21, between motor 22 and rotating shaft 25, be connected by synchronous pulley 23 and Timing Belt 24, the rotating speed of motor 22 can pass through computing machine 43 or manual adjustments, the hermetically-sealed construction that moving assembly 12 that two covers are identical and quiet assembly 13 form is housed in seal chamber 11, adopt this arrangement axial force on the one hand can self-poise annular seal space, on the other hand, in process of the test, data measured is averaged, and can record more accurately sealing property; Seal face slip, end face temperature, the end-face friction moment of torsion of measuring in experiment is the sealing property parameter of sealing; Before experiment, first in fluid reservoir, add sealing medium, then start compressor for being depressed into sealing load, start ebullator to realize the circulation of sealing medium in annular seal space, the large I of sealed medium pressure is controlled by compressor; Starter motor when experiment, motor drives rotating shaft rotation by belt and belt pulley, under mechanical seal end surface differential pressure action, sealing medium will leak to the external world by end face, its leakage flows into and is placed in the container of electronic analytical balance after collecting by conduit, can obtain seal leakage rate by the quality that weighs liquid in set time inner pressurd vessel; The temperature rise of experimental side seal face can be passed through measuring in thermocouple sensor loading test stationary ring hole; In the time of the rotation of moving assembly, the moment of friction between seal face will balance each other with the suffered moment in transmission rod outer end, and what the power that pressure transducer records and the product of the arm of force were two mechanical seals closes moment of friction (M=F × R); The data that pressure transducer, thermocouple sensor and electronic balance record can obtain the sealing property parameter of test machines sealing after processing by computer acquisition.
Embodiment 2 utilizes the device described in embodiment 1 to proceed as follows:
1) in fluid reservoir, add sealing medium, start compressor for being depressed into sealing load, start ebullator to realize the circulation of sealing medium in annular seal space, sealed medium pressure size is controlled by compressor;
2) measuring junction surface temperature: starter motor, the moving assembly rotation of driven by motor, in instrument connection on experiment stationary seal ring, insert thermocouple sensor, the temperature signal of Real-Time Monitoring is transferred to computing machine by thermocouple sensor, and computing machine carries out analyzing and processing to the temperature signal receiving;
3) measure slip: under mechanical seal end surface differential pressure action, sealing medium will leak to the external world by end face, the sealing medium utilization leaking out is taken over and collected rear introducing in the container of measuring, and be placed on the electronic analytical balance of ten thousand/gram precision, electronic analytical balance adopts data line and computing machine to join, every set time reading out data, weigh the quality of liquid in set time inner pressurd vessel, can obtain slip;
4) measure friction torque: seal chamber is connected with transmission rod, the transmission rod other end contacts with pressure transducer is vertical, when test, the friction torque of mechanical seal end surface will balance each other with the moment of the measured power generation of pressure transducer, obtain the distance between pressure transducer and rotating shaft, can obtain the friction torque (M) of a set of hermetically-sealed construction, that is:
M=0.5×F×R
Wherein, M represents friction torque; F represents the pressure of transmission rod to pressure transducer; R represents the vertical range of seal chamber central shaft and power sensor, adopts the identical hermetically-sealed construction of two covers when 0.5 representative test.
Content described in this instructions embodiment is only enumerating of way of realization to utility model design; protection domain of the present utility model should not be regarded as only limiting to the concrete form that embodiment states, protection domain of the present utility model also comprises that those skilled in the art conceive the equivalent technologies means that can expect according to the utility model.
Claims (6)
1. the proving installation of a liquid lubrication mechanical seal sealing property, it is characterized in that: comprise packoff, drive unit, servicing unit, proving installation, described packoff comprises with the seal chamber of sealing liquid import and export, is arranged on the moving assembly in seal chamber, quiet assembly, described moving assembly comprises rotating seat, experiment moving sealing ring, auxiliary seal rotating ring, and described experiment moving sealing ring, auxiliary seal rotating ring are arranged on the axle sleeve of rotating shaft; Described quiet assembly comprises stationary ring end cap, auxiliary stationary ring end cap, experiment stationary seal ring and auxiliary seal stationary ring, described experiment stationary ring, described auxiliary seal stationary ring are fixed with stationary ring end cap and the auxiliary stationary ring end cap at seal chamber two ends respectively, and the end contact face of the end contact face of described experiment stationary seal ring and described experiment moving sealing ring, described auxiliary seal stationary ring and described auxiliary seal rotating ring is all positioned at described seal chamber inside; Described stationary ring end cap and described auxiliary stationary ring end cap are separately fixed on clutch shaft bearing seat, the second bearing seat; On described experiment stationary seal ring, have and connect leak and thermometer hole;
Described drive unit comprises support, motor, synchronous pulley, Timing Belt, rotating shaft and bearing housing, and described motor is fixed on support, and the output shaft of described motor is connected with the rotating shaft that runs through bearing housing with Timing Belt by synchronous pulley; Described motor is connected with computing machine by motor inverter;
Described servicing unit comprises compressor, high-voltage tube, fluid reservoir and ebullator, and described compressor is connected with fluid reservoir by high-voltage tube, and described fluid reservoir is imported and exported by high-voltage tube and ebullator and is connected with the import and export of described seal chamber;
Described proving installation comprises transmission rod, pressure transducer, thermocouple sensor, electronic balance and above-mentioned computing machine, and described transmission rod one end is fixed on seal chamber, the other end contacts with the pressure transducer that is positioned at described seal chamber below; Described thermocouple sensor is positioned at the thermometer hole place of described experiment stationary ring; Described pressure transducer, thermocouple sensor and electronic balance is connected with described computing machine respectively.
2. proving installation as claimed in claim 1, is characterized in that: the hermetically-sealed construction that the moving assembly of two covers and quiet assembly composition are installed in described seal chamber.
3. proving installation as claimed in claim 2, it is characterized in that: the second bearing seat and the 3rd bearing seat with bearing installed at the two ends of described bearing housing, and described rotating shaft runs through on the bearing that is arranged on the second bearing seat and the 3rd bearing seat by the second described bearing.
4. proving installation as claimed in claim 3, is characterized in that: the thermometer hole at the described experiment stationary seal ring back side is extremely from seal face 1mm.
5. proving installation as claimed in claim 4, is characterized in that: described seal chamber is connected with stationary ring end cover and auxiliary stationary ring end cover by bolt, forms detachable type structure.
6. proving installation as claimed in claim 5, it is characterized in that: described clutch shaft bearing seat and the second described bearing seat, the 3rd described bearing seat are fixed by screws on two articles of horizontal slide rails, and the horizontal middle spindle of seal chamber overlaps with the central shaft of described rotating shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320489009.4U CN203643093U (en) | 2013-08-12 | 2013-08-12 | Testing apparatus for seal performance of liquid lubrication mechanical seal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320489009.4U CN203643093U (en) | 2013-08-12 | 2013-08-12 | Testing apparatus for seal performance of liquid lubrication mechanical seal |
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| Publication Number | Publication Date |
|---|---|
| CN203643093U true CN203643093U (en) | 2014-06-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320489009.4U Withdrawn - After Issue CN203643093U (en) | 2013-08-12 | 2013-08-12 | Testing apparatus for seal performance of liquid lubrication mechanical seal |
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| Country | Link |
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| CN (1) | CN203643093U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103630301A (en) * | 2013-08-12 | 2014-03-12 | 浙江工业大学 | Method for testing liquid lubrication machine seal sealing performance and devices thereof |
| CN116718361A (en) * | 2023-05-19 | 2023-09-08 | 江苏海洋大学 | Self-impact sealing experimental device |
-
2013
- 2013-08-12 CN CN201320489009.4U patent/CN203643093U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103630301A (en) * | 2013-08-12 | 2014-03-12 | 浙江工业大学 | Method for testing liquid lubrication machine seal sealing performance and devices thereof |
| CN116718361A (en) * | 2023-05-19 | 2023-09-08 | 江苏海洋大学 | Self-impact sealing experimental device |
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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: 20140611 Effective date of abandoning: 20160817 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20140611 Effective date of abandoning: 20160817 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |